Route brief · BKK → HAN
Bangkok → Hanoi
$142
−11% vs typical
seasonal median $160 · difference $18
Oct 14 – Oct 23 · 9 nights
Thai AirAsiaNonstop
- Usual monthly lows
- $149–$161
- Board rank
- Stronger than 24%
- Route sample
- 8 observed months
Cached fare — the booking search re-prices live before you pay.
Destination briefHANHanoiOld-quarter alleys, motorbike tides and the country’s best food — and Ha Long Bay two hours out.Best windowOct–Nov · Mar–AprAirportsNoi Bai (HAN)All routes into HanoiWhen this route gets cheap.
Cached-fare history: across 8 months, Oct is the cheapest for BKK → HAN. Best time to be there: Oct–Nov · Mar–Apr.
Fares bottom out in October around $142 and peak in March near $164 — a $22 spread across the 8 months we track. The cheapest itinerary we are tracking flies Thai AirAsia nonstop and takes about 2 hours outbound, on a 9-night trip. At $142 for 987 km each way, that works out to about $72 per 1,000 km flown. That is above the $41 typical of short-haul fares here. Of the 3 departure cities we track at a similar distance from Hanoi, this is the cheapest right now — 8% under the next one, Guangzhou.
Cheapest day in the next 3 months: Oct 12 · $142 (10% below median)
Tap any day → live search
The median cached fare across this calendar is 1% higher than when tracking began on Aug 8 — $156 then versus $157 now, across 5 recorded snapshots. This is a calendar-level trend, so an individual deal above can be lower. The lowest single day we have seen here is $138, on Oct 11.
September 2026
October 2026
Cheapest in Oct · around $142
11% below the $160 typical fare
Cheapest round-trip fare found per month · Bangkok → Hanoi · cached-price history
Route facts
- Airports
- Suvarnabhumi (BKK) · Don Mueang (DMK) ↔ Noi Bai (HAN)
- Flight time
- ~2 hours outbound
- Distance
- ~987 km each way
- Typical price
- $160 round-trip (seasonal median)
- Airlines on the board
- Thai AirAsia
- Itineraries
- Nonstop available
- Best months to visit
- Oct–Nov · Mar–Apr
BKK → HAN, answered.
Is $142 a good price for Bangkok to Hanoi?
Only slightly. The seasonal median is around $160 round-trip and this fare is 11% under it, about $18. We do not call a drop notable until 20%, so this is an ordinary price for the route rather than a reason to hurry.
What is the cheapest month to fly from Bangkok to Hanoi?
Across 8 months of cached-fare history, Oct comes out cheapest on this route. The best months to actually be in Hanoi are Oct–Nov · Mar–Apr — when those overlap, that's your window.
How far in advance should I book BKK → Hanoi?
We do not publish a number for this, because we cannot measure it yet. Answering it honestly means watching the same departure date on this route over many weeks as it approaches, and that archive is still filling up — so any "book N days ahead" figure here would be borrowed from somewhere else rather than measured. What we can measure is which month is cheap: across 8 months of cached fares, Oct comes out lowest on this route. See /guides/what-moves-a-flight-price/ for what does move a fare.
Are there nonstop flights from Bangkok to Hanoi?
Yes — the current board includes nonstop fares (Thai AirAsia). The outbound leg runs around 2 hours.
Are these prices guaranteed?
No — these are cached fares found on real searches (this one on September 1). Airlines reprice constantly, so the booking search re-checks the live price before you pay. Fresher finds are far more likely to still be available.
Next step
Sleeping in Hanoi?
Lock the flight first — then compare stays for Oct 14 – Oct 23 · 9 nights.
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Missed it?
Cached fares expire. This route has a feed of its own — follow it and the next BKK → HAN drop reaches you as soon as we find it.
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