Bangkok to Hanoi Flights: How to Find the Cheapest Fares (2026)

The Bangkok-Hanoi route is one of the routes Thai travelers fly most often to reach northern Vietnam — under 2 hours in the air gets you to a city with a completely different feel from Da Nang or Ho Chi Minh City. Fares on this route swing just as much as routes to Japan or Korea, except far fewer people have caught on to the best times to book.

How long does the direct flight take

The direct flight from Bangkok to Hanoi takes about 1 hour 45 minutes — roughly the same as flying to Singapore or Kuala Lumpur. That makes even a short 3-4 day trip worth the travel time, with morning and evening departures available across several airlines.

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When fares tend to drop

Fares on this route are usually cheaper on weekdays, especially outside northern Vietnam's peak season — June through August tends to be quieter too, since the heat there keeps some travelers away. Avoid booking around Tet (Vietnamese Lunar New Year), when the entire country travels home at once and fares spike well above normal.

How far ahead should you book

For this route, booking about 1-2 months ahead usually turns up the best fares, since budget carriers release promotional fares in batches. If you spot a price you're happy with, don't wait — cheap seats on morning departures tend to sell out faster than midday or afternoon flights.

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Which airlines fly this route

Several full-service and budget carriers currently fly this route direct, giving you a good spread of prices and schedules. Before booking, check how much checked baggage is included in the fare — some budget carriers charge for it separately, and once you add that cost, the total can end up close to a full-service fare anyway.

Hanoi and Da Nang are not the same city — don't book the wrong one

One mix-up that trips up a fair number of travelers is confusing Hanoi with Da Nang, since both are in Vietnam and the names can blur together if you're not used to them. Hanoi is the capital, up north; Da Nang sits in central Vietnam, near Hoi An and the coast. Double-check the destination airport code before you pay, since most budget fares are non-refundable or only partially refundable once booked.

Once you land in Hanoi, where to go first

After landing at Noi Bai Airport and reaching the city center, head straight for the Old Quarter, which packs restaurants, markets, and old-town atmosphere into one compact area. A few minutes on foot gets you to Hoan Kiem Lake, where locals gather every evening for a walk — a solid starting point before branching out to the rest of the city.

Getting ready to fly to Vietnam

Thai passport holders can enter Vietnam visa-free for short stays, but you should always check that your passport has at least 6 months of validity left before flying. It's also worth carrying some Vietnamese dong in cash, since plenty of small shops still don't accept mobile payment.

Book your Bangkok-Hanoi flight here

Tap Search Bangkok-Hanoi flights to compare real-time fares on this route and book through Trip.com.