Hong Kong to Hanoi Flights from ₹8,846 — Book Cheap Tickets
Compare live fares across every airline. Data-driven insights powered by Meera AI.
How much is a Hong Kong to Hanoi flight, and when is it cheapest?
The cheapest Hong Kong→Hanoi fare in the next 70 days is ₹8,514 on Sun, 16 Aug 2026 (Hkexpress); the typical fare is ₹44,828 — picking the right date saves about 81%.
₹8,514 cheapest Hong Kong→Hanoi fare · 70-day window HappyFares data · 1,592 fares observed · updated daily
| Travel date | Cheapest fare | Airline |
|---|---|---|
| Sun, 16 Aug 2026 | ₹8,514 | Hkexpress |
| Tue, 25 Aug 2026 | ₹8,782 | HK Express |
| Fri, 4 Sep 2026 | ₹8,782 | HK Express |
What is the cheapest day to fly Hong Kong to Hanoi?
Based on HappyFares fare data, Friday is the cheapest day to fly Hong Kong→Hanoi — about 33% below Monday, the priciest day.
Fare breakdown
Based on 1,720 observations over the last 30 days (non-stop economy fares):
Price trend — last 22 days
Lowest fare observed daily on HKG→HAN:
💡 Best time to book
Book just a few days ahead to save around ₹7,872
Typical 3-6 days out non-stop fares run about ₹12,159, versus the overall typical fare of ₹20,031.
📅 Cheapest day of the week
Sunday flights average 9.2% cheaper than Saturday flights.
🕒 Cheapest time of day to fly
5–8 AM flights are 195.9% cheaper than 4–8 PM flights on HKG→HAN.
Based on non-stop fare observations over the last 30 days. Typical fare by departure time slot:
Airlines on this route
Carriers seen operating HKG→HAN in recent searches, with their typical economy fare:
| Airline | Flights tracked | Share of tracked flights |
|---|---|---|
| Cathay Pacific | 75 | |
| HK Express | 72 | |
| Vietnam Airlines | 71 | |
| Finnair | 1 | |
| Air Canada | 1 |
Click any airline above for its dedicated Hong Kong–Hanoi page (fares, schedule, fare classes, OTP). Share is based on distinct flight-date combinations from the last 30 days.
Get check-in-ready for Hong Kong → Hanoi
Web check-in steps, boarding-pass download and PNR-status tracking for the airlines flying this route:
- Vietnam Airlines — Web check-in
✈ Route Capacity
4 flights operate this route daily — limited supply on HKG→HAN. Top carrier is CX with roughly 50% of scheduled daily capacity.
💡 Typical price range on this route
Prices on HKG→HAN typically range from ₹8,514 to ₹29,095 — based on 1,720 fare observations over the last 30 days.
The current lowest fare we're tracking (₹8,846) is in the typical range.
Hong Kong to Hanoi flight fares by date
What is the Hong Kong to Hanoi flight fare on a specific date?
Upcoming Hong Kong→Hanoi fares (updated daily): Wed 15 Jul ₹11,561 · tomorrow (Thu 16 Jul) ₹9,635 · Fri 17 Jul ₹8,935 · Sat 18 Jul ₹9,785 · Sun 19 Jul ₹9,848 · Mon 20 Jul ₹8,855 · Tue 21 Jul ₹8,782 · Wed 22 Jul ₹8,811 · Thu 23 Jul ₹9,741 · Fri 24 Jul ₹8,784. The cheapest of the next 10 days is ₹8,782 on Tue 21 Jul.
Live lowest fares for the next 30 departure dates — tap any date to search that day.
Live lowest non-stop economy fares on Hong Kong→Hanoi, refreshed daily. Final price depends on availability at booking.
Hong Kong to Hanoi fares by month — planning ahead
The cheapest Hong Kong → Hanoi fare in the months ahead is ₹8,879 in Oct 2026. Real lowest non-stop fares observed for each month, from 2,431 price points — refreshed weekly. Useful for booking peak-season trips months in advance.
|
Sep 2026
from ₹9,403
376 fares · HK Express
|
Oct 2026
from ₹9,483
198 fares · HK Express
|
Oct 2026
from ₹8,879
246 fares · HK Express
|
Oct 2026
from ₹8,879
355 fares · HK Express
|
Nov 2026
from ₹9,531
90 fares · HK Express
|
Nov 2026
from ₹8,888
186 fares · HK Express
|
|
Nov 2026
from ₹8,888
283 fares · HK Express
|
Dec 2026
from ₹10,277
194 fares · HK Express
|
Dec 2026
from ₹10,277
218 fares · HK Express
|
Dec 2026
from ₹8,887
227 fares · HK Express
|
Jan 2027
from ₹15,458
26 fares · Vietnam Airlines
|
Jan 2027
from ₹15,458
32 fares · Vietnam Airlines
|
Lowest non-stop economy fares actually observed for each month on this route, aggregated weekly. Far-out fares move as airlines release inventory — book when the price suits you.
Special offers and discounts for Hong Kong to Hanoi flights
Bank-card discount calendar for Hong Kong to Hanoi flight bookings. Most Indian banks rotate offers on a monthly schedule — match your booking weekend to the participating card for the biggest saving. On top of these, HappyFares charges ₹0 convenience fee with code HFNCF (one-way) or RTHFNCF (round-trip) on direct happyfares.in bookings, saving an additional ₹249–₹499 per passenger.
| Window | Bank / provider | Offer | How to apply |
|---|---|---|---|
| 1st weekend of every month | HDFC Bank credit cards (SmartBuy / Diners Club / Millennia) | Flat ₹500–₹1,500 off on bookings ₹5,000+ | Auto-applied at checkout |
| 5th–10th of every month | Axis Bank credit cards (Magnus / Reserve / SELECT) | No-cost EMI 3/6 months on bookings ₹10,000+ | Choose Axis EMI at payment |
| 15th–20th of every month | ICICI Bank credit cards (HPCL / Coral / Rubyx) | ₹500 flat off on domestic ₹5,000+ | Auto-applied at checkout |
| 20th–25th of every month | SBI Cards (ELITE / PRIME / SimplyCLICK) | 5% cashback (max ₹1,000) on first booking | SBIFIRST (illustrative) |
| 25th–30th of every month | Kotak / Yes Bank / IDFC FIRST credit cards | ₹300–₹800 off on bookings ₹4,000+ | Auto-applied at checkout |
| Republic Day (Jan 21–26) | All major banks + airline direct sales | 10–25% off advance bookings 3–6 months out | Sale tag |
| GoIndependence (Aug 11–15) | All major banks | 15–25% off domestic + GCC bulk fares | Sale tag |
| Diwali Dhamaka (Nov 1–15) | All major banks | 15–30% off — largest sale of the year | Sale tag |
Exact codes change month to month. Check the offer panel during checkout — eligible offers auto-apply when your payment method matches.
Loyalty miles you can earn on Hong Kong to Hanoi
Each airline that operates Hong Kong-Hanoi runs its own loyalty / miles program. Miles earned on this ~846 km round trip vary by airline and fare class. Frequent flyers of the route should pick the airline whose loyalty program matches their travel pattern (domestic vs international, alliance vs standalone).
| Airline | Loyalty program | Approx miles / round trip | Notes |
|---|---|---|---|
| IndiGo | IndiGo BluChip | 500-1,500 | Launched Nov 2024. Earn ~25% of distance flown on Saver, ~50% on Flexi, ~100% on UpFront. |
| Air India | Maharaja Club (formerly Flying Returns) | 700-2,000 | Star Alliance member — miles also earn status on Lufthansa, Singapore Airlines, United, Turkish, etc. |
| Air India Express | Maharaja Club (shared with Air India) | 500-1,200 | Lower earn rate than Air India parent, but still credits to the same Maharaja Club balance. |
| SpiceJet | SpiceClub | 400-1,200 | Reward Points (not miles); redeemable for SpiceJet flights only. |
| Akasa Air | AkasaSmiles (Silver/Gold) | No miles — tier benefits only | AkasaSmiles is a status program (extra baggage, priority boarding) rather than a mile-earning program. Currently no redemption flights. |
Mile-earning estimates assume base fare bookings; promotional fares typically earn 0–25% miles. Status-tier members (gold/platinum) often earn 50-100% bonus miles.
Group booking & family travel on Hong Kong to Hanoi
Travelling as a family or group of 5+ passengers on Hong Kong-Hanoi unlocks different fare structures, baggage allowances, and seating considerations than solo or 2-passenger travel. Below is what experienced family travellers tend to optimise for on this route.
Group fares (5+ passengers)
- Airline group desks: for 9+ passengers booked together, most Indian airlines (IndiGo, Air India, SpiceJet, Akasa) have dedicated group-booking desks that often quote 3-8% below the published online fare. Email groups@goindigo.in, groups@airindia.com, etc. with travel dates, sector, passenger count.
- HappyFares group-booking service: for Hong Kong-Hanoi bookings of 6+ passengers, contact us via WhatsApp 7670070070 for negotiated group rates that include the ₹0 convenience fee benefit on each ticket.
- Don't split the booking: booking 8 passengers as one PNR locks the same fare for everyone. Booking as 4+4 PNRs risks one half repricing if fare buckets shift between submissions.
Family travel tips (with children / infants)
- Infants (under 2): all Indian carriers charge ₹0 base fare for lap infants on domestic Hong Kong-Hanoi; 10% of adult fare on international. Bassinet seating must be requested at the time of booking (limited to row 1 of each cabin).
- Children 2-12: typically full adult fare on most Indian carriers (no child discount domestic). Some international carriers (Singapore Airlines, Emirates) offer 25% off for accompanied children.
- Seat selection: when booking, pay ₹100-500/seat to lock adjacent seats — otherwise the airline algorithm may scatter your family across the cabin. IndiGo UpFront and SpiceMax include free seat selection.
- Baggage: domestic Hong Kong-Hanoi allows 15 kg checked per adult + 7 kg cabin. Children get full adult allowance; lap infants get 10 kg checked + 1 collapsible stroller free.
- Special meals: request child meal (CHML) or vegetarian (VGML) at booking; meal preferences cannot be changed at the airport.
HappyFares Easy Refund for families
- 24-Hour RefundGuard (₹199/pax): for families locking in plans 60+ days out, this lets you cancel within 24 hours of booking for a full refund if plans shift. Cost for family of 4 = ₹796 — covers ~₹15,000+ in potential cancellation fees.
- Smart Saver Cancel-for-Any-Reason (₹399/pax): on eligible fare classes, lets you cancel up to 24 hours before departure for a full refund. Family of 4 = ₹1,596 — peace of mind for an Hong Kong-Hanoi trip booked 3-6 months ahead.
Carbon footprint of Hong Kong to Hanoi flight
A Hong Kong-Hanoi flight is ~846 km. Estimated CO2 emissions per passenger:
Estimates use ICAO Carbon Emissions Calculator methodology: narrow-body single-aisle averaging ~115g CO₂/passenger-km. Actual emissions vary ±15% based on aircraft age, load factor, weather routing, and class of travel (business-class emissions are ~3× economy due to space per passenger).
How to reduce your Hong Kong to Hanoi flight footprint
- Fly direct (non-stop): direct flights emit ~10% less CO₂ than connecting flights (no taxi/take-off cycle penalty).
- Fly economy: economy emits ~3× less CO₂ per passenger than business/first class (lower space per passenger).
- Pack light: every additional 10 kg of baggage on a typical flight adds ~7-10 kg CO₂ over the duration. Carry-on-only travel can cut your share by ~5%.
- Buy carbon offsets: airline-offered offset programs (IndiGo, SpiceJet, Air India) charge ~₹50-150 per domestic round trip and fund verified offset projects.
- Compare alternatives: on routes over 2,500 km, flight is typically the lowest-emissions option per km vs train + road combinations.
Emissions calculations use 2024 ICAO methodology. For exact route-specific emissions for corporate ESG reporting, contact your travel-management company or the airline directly.
Offers on Hong Kong to Hanoi flights
Apply these HappyFares promo codes at checkout to save on your international booking. Codes refresh from our current live catalogue.
FIRSTTREAT
HFNCF
FLYFREE
SWASTHRAHO
Promo codes apply at checkout. T&Cs apply and codes may be withdrawn at any time. See the full list at all HappyFares offers.
Student fares on international flights
Student travellers can avail discounted international fares at checkout — no promo code needed. (Senior-citizen and defence fares are available on domestic flights only.)
10% discount on base fare plus an additional 10 kg baggage allowance. A valid student ID must be shown at check-in.
Hong Kong to Hanoi — flight distance & route facts
Distance shown is great-circle (straight-line). Actual flight path varies by airline routing and air traffic control.
Cheap Flights Hong Kong to Hanoi — Lowest Air Ticket Price & Fares
Looking for the cheapest flight from Hong Kong to Hanoi? HappyFares compares live fares across every major airline so you always book at the lowest airfare. Based on 1,720 recent fare observations, the typical Hong Kong to Hanoi one-way air ticket costs around ₹20,031, with the lowest flight price seen at ₹8,514.
Non-stop flights from Hong Kong to Hanoi typically take 2h 10m. Non-stop economy air ticket prices on this route average around ₹20,031 — the fastest and most popular option for this sector.
The flight distance between Hong Kong (HKG) and Hanoi (HAN) is approximately 846 km (526 miles).
Use the search box above to compare Hong Kong to Hanoi cheap flight tickets across all airlines — IndiGo, Air India, SpiceJet, Akasa Air and more. Pick any date to see today's lowest fare and flight ticket prices.
How to Book Cheapest Hong Kong to Hanoi Flight Tickets on HappyFares
- Enter your departure date in the search box above — your route (Hong Kong → Hanoi) is already selected.
- Tap Search flights to see live cheap flight fares across all airlines flying Hong Kong to Hanoi.
- Compare air ticket prices, departure times and airlines. Our Meera AI highlights the best buy based on 30-day historical trends — so you know if today's fare is genuinely cheap.
- Select your preferred flight and complete booking on HappyFares — instant confirmation, no hidden fees.
How to Get the Lowest Hong Kong to Hanoi Airfare
- Book 3–6 weeks in advance — flight ticket prices on most Indian routes are cheapest when booked 21–45 days before departure. Last-minute fares are typically 40–60% higher.
- Fly mid-week — Tuesday and Wednesday departures often have the lowest flight fares. Weekend flights (Friday–Sunday) tend to be 10–20% more expensive.
- Compare all airlines — on Hong Kong to Hanoi, the cheapest airline varies by date. IndiGo is often the lowest-fare option, but Air India, SpiceJet, and Akasa Air sometimes undercut on specific days.
- Use HappyFares price history — our fare trend chart shows whether today's air ticket price is lower or higher than the 30-day average, so you can decide when to book.
- Avoid peak travel dates — Diwali, Christmas, and school holidays push Hong Kong–Hanoi flight prices up significantly. Book early or travel a day or two outside peak dates for cheaper tickets.
Check live Hong Kong to Hanoi flight status
Tracking a specific HKG–HAN flight today? Our dedicated flight status page shows airlines operating this route, typical schedules, and links to live trackers.
Check Hong Kong → Hanoi live flight status →Hong Kong to Hanoi flight schedule & timings
Want departure and arrival times rather than fares? Our Hong Kong–Hanoi flight schedule lists every airline's daily timings, typical flight duration, and the full weekly timetable.
View Hong Kong → Hanoi flight schedule & timings →Hong Kong to Hanoi flight ticket price — full fare guide
Planning ahead and want to understand how much Hong Kong–Hanoi flights cost? See typical price ranges by month, best booking windows, and per-airline fare estimates on our dedicated ticket price guide.
See Hong Kong → Hanoi ticket price guide →Why Book Hong Kong to Hanoi Cheap Flight Tickets with HappyFares?
- Best price guarantee — we compare live fares across every airline serving Hong Kong (HKG) to Hanoi (HAN). Lowest tracked: ₹8,514.
- Meera AI price predictions — know whether to book now or wait, trained on 1,720 fare observations on this exact route.
- No hidden charges — the price you see on HappyFares is the price you pay. Zero convenience fee surprise.
- Secure payment — UPI, cards, net banking, wallets, and EMI options. PCI-DSS encrypted.
- 24/7 customer support — real humans for rescheduling, cancellation, and refunds on your Hong Kong–Hanoi booking.
Visa requirements for Indians: Hong Kong to Hanoi
Since August 2023, Vietnam has offered an eVisa for stays up to 90 days, with single- or multiple-entry options. Indian passport holders should apply online and carry the printed eVisa approval at the airport. Beware of third-party "Vietnam visa" sites that charge inflated fees — only apply via the official Immigration Department portal. Verify the current fee and validity at https://evisa.xuatnhapcanh.gov.vn before booking.
Last verified: 2026-05 — visa policies may change. Always confirm requirements on the official embassy or immigration website before travel.
Hong Kong and Hanoi airport details
Hong Kong is a dense harbourside metropolis blending Cantonese heritage with cosmopolitan shopping and skyline views.
Hanoi is Vietnam's thousand-year-old capital — graceful lakes, French colonial architecture, and the legendary Old Quarter.
Things to do in Hanoi
Hanoi is Vietnam's thousand-year-old capital — graceful lakes, French colonial architecture, and the legendary Old Quarter. Top attractions in Hanoi include: Hoan Kiem Lake, Ho Chi Minh Mausoleum, Temple of Literature, Old Quarter. Make the most of your Hong Kong to Hanoi trip by exploring these landmarks.
Baggage policy for Hong Kong to Hanoi flights
Baggage allowance on international Hong Kong to Hanoi flights varies significantly by airline, route, and fare class — there is no single industry standard. Typical economy allowances on this sector are in the range of 23-30 kg check-in + 7-8 kg cabin, but low-cost carriers often charge separately for check-in bags, while full-service carriers on long-haul routes may include a second check-in piece. Business class typically doubles the allowance (40-50 kg).
Before you book, check the exact baggage rules on the fare-selection page for your chosen airline and fare. Extra baggage purchased during booking is almost always cheaper than at-airport rates.
Cancellation and refund for Hong Kong to Hanoi flights
Cancellation and refund terms on international Hong Kong to Hanoi flights vary substantially by airline, fare class, and how far in advance you cancel. Non-refundable economy fares typically allow only taxes + part of fuel surcharge to be refunded. Refundable / flexible fares cost more upfront but allow cancellation with lower deductions. Business and first class bookings usually have more lenient rules.
Rescheduling (changing your Hong Kong-Hanoi travel date) is normally cheaper than cancelling and rebooking, but airline-specific change fees apply plus any fare difference.
Frequently asked questions
How long is a flight from Hong Kong to Hanoi?
Non-stop flights from Hong Kong to Hanoi typically take 2h 10m. Flights with connections take longer depending on layover duration.
What is the average price of a Hong Kong to Hanoi flight?
Based on 1,720 recent fare observations, the typical one-way non-stop economy fare on Hong Kong to Hanoi is around ₹20,031. Cheapest fares on this route have been seen at ₹8,514. Pick your date in the search box above to see current fares.
Which airlines fly from Hong Kong to Hanoi?
The main carriers serving the Hong Kong to Hanoi route include Cathay Pacific, HK Express, Vietnam Airlines, Finnair, Air Canada. Use the search box to compare live fares across all of them.
What is the cheapest day to fly from Hong Kong to Hanoi?
Based on our 30-day analysis, Sunday flights tend to be the cheapest on this route. Saturdays and Fridays typically cost more due to weekend travel demand.
When should I book Hong Kong to Hanoi flights for the best price?
Book just a few days ahead for the cheapest fares. Typical savings versus the usual fare of ₹20,031 are around ₹7,872.
What is the flight distance from Hong Kong to Hanoi?
The straight-line (great-circle) flight distance from Hong Kong (HKG) to Hanoi (HAN) is approximately 846 km (526 miles). Actual flight paths vary slightly due to air traffic routing.
How do I check Hong Kong to Hanoi live flight status?
For real-time Hong Kong to Hanoi flight status including delays, cancellations, and gate changes, visit the HappyFares flight status page at https://www.happyfares.in/flights/hong-kong-to-hanoi-flight-status. You can also check with your HKG–HAN flight number on individual airline apps (IndiGo, Air India, SpiceJet, Akasa Air).
What is the Cathay Pacific fare for Hong Kong to Hanoi?
Cathay Pacific (CX) operates on the Hong Kong–Hanoi route. Based on recent fare tracking, Cathay Pacific economy fares on this route typically run around ₹20,479. Search Hong Kong to Hanoi on HappyFares to compare Cathay Pacific fares for your specific travel date.
What is the HK Express fare for Hong Kong to Hanoi?
HK Express (UO) operates on the Hong Kong–Hanoi route. Based on recent fare tracking, HK Express economy fares on this route typically run around ₹9,741. Search Hong Kong to Hanoi on HappyFares to compare HK Express fares for your specific travel date.
What is the Vietnam Airlines fare for Hong Kong to Hanoi?
Vietnam Airlines (VN) operates on the Hong Kong–Hanoi route. Based on recent fare tracking, Vietnam Airlines economy fares on this route typically run around ₹29,095. Search Hong Kong to Hanoi on HappyFares to compare Vietnam Airlines fares for your specific travel date.
What is the Finnair fare for Hong Kong to Hanoi?
Finnair (AY) operates on the Hong Kong–Hanoi route. Based on recent fare tracking, Finnair economy fares on this route typically run around ₹24,451. Search Hong Kong to Hanoi on HappyFares to compare Finnair fares for your specific travel date.
What is the Hong Kong to Hanoi business class fare?
Business class fares on Hong Kong to Hanoi flights vary significantly by airline and season — typically 3-5× the economy price. Search on HappyFares and select "Business" cabin to compare current business class fares across all airlines flying this route.
Are there any promo codes or offers for Hong Kong to Hanoi flights?
HappyFares regularly features flight offers and discounts on the Hong Kong–Hanoi route. Check the offers section on happyfares.in for current bank offers, UPI discounts, and flash sales. The best way to get the lowest fare is to search your dates and compare — our Meera AI flags when a fare is a genuinely good deal based on 30-day historical data.
Can I book a Hong Kong to Hanoi flight for today?
Yes — HappyFares supports same-day flight booking for Hong Kong to Hanoi. Search with today's date to see available flights departing in the next few hours. Keep in mind last-minute fares are typically higher; the best prices are usually found 14-60 days in advance.
What is the cheapest Hong Kong to Hanoi flight price?
The lowest Hong Kong to Hanoi fare tracked by HappyFares in the last 30 days was ₹8,514. Cheapest fares are typically found on the cheapest day of the week (see above) when booked well in advance. Search your specific date on HappyFares for the current lowest fare.
What is the lowest airfare from Hong Kong to Hanoi?
The lowest airfare tracked on the Hong Kong to Hanoi route in the last 30 days was ₹8,514 (one-way economy, non-stop). Lowest airfares are available on mid-week dates booked 3–6 weeks ahead. Search on HappyFares to see today's lowest Hong Kong–Hanoi airfare.
What is the Hong Kong to Hanoi air ticket price today?
Hong Kong to Hanoi air ticket prices today start from around ₹8,514 on the cheapest dates. The typical one-way air ticket price on this route is ₹20,031. Use the search above to see today's live air ticket prices across all airlines.
How to get cheap flight tickets from Hong Kong to Hanoi?
To get the cheapest Hong Kong to Hanoi flight tickets: (1) Book 3–6 weeks in advance — last-minute flight fare is usually 40–60% higher. (2) Fly on Tuesday or Wednesday — cheapest days on most routes. (3) Compare all airlines on HappyFares — IndiGo, Air India, SpiceJet, Akasa Air may each have the lowest rate on different dates. (4) Check our price trend chart — it shows whether today's flight ticket price is cheap or expensive vs the 30-day average.
What is the lowest flight rate from Hong Kong to Hanoi?
The lowest flight rate seen on Hong Kong to Hanoi in recent tracking was ₹8,514. Flight rates on this route are cheapest on mid-week dates and when booked 3+ weeks ahead. Search HappyFares to see the current lowest flight rate for your travel date.
How do I find flight offers on Hong Kong to Hanoi?
To find the best Hong Kong to Hanoi flight deals: (1) Search on HappyFares and sort by lowest price — we compare fares across all airlines in real time. (2) Book with UPI or your bank's co-branded card — HappyFares supports instant bank discounts and UPI cashback. (3) Use flexible dates to spot cheaper travel windows. Our Meera AI price indicator tells you whether the current fare is a good deal or likely to drop.
Can I cancel or reschedule my Hong Kong to Hanoi flight?
Yes — cancellation and rescheduling are supported. Charges depend on the airline and fare type you book. Our support team can help you with cancellation or date changes on any Hong Kong to Hanoi booking.
What is the baggage allowance on Hong Kong to Hanoi flights?
International economy allowance on Hong Kong to Hanoi typically ranges from 23-30 kg check-in + 7-8 kg cabin, but varies significantly by airline. Low-cost carriers often charge separately for check-in bags; full-service carriers on long-haul routes may include a second piece. Check the exact rules on the fare-selection page before booking.
Book Hong Kong to Hanoi flights now
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