Flights Bangkok to Hanoi (BKK-HAN): Airlines, THB Fares

Bangkok to Hanoi links Thailand with Vietnam’s capital, a route running on business travel, tourism and regional family ties. At around 35 flights a week it is frequent and dependable, carrying visitors to Hanoi’s old quarter and the landscapes of northern Vietnam alongside a steady stream of business passengers.

Block time is about 1.8 hours — a short hop. The mix of full-service and low-cost carriers keeps the route competitive, and Hanoi also serves as the gateway to northern Vietnam, from Halong Bay to the mountain regions.

Corridor profile

The BKK–HAN corridor runs about 35 departures a week across 4 carriers, with an average block time of 1.8 hours, and the lowest fare the feed returned for this route is ฿4,530. The frequency figure counts every carrier on the route combined, not any single airline.

Our own demand score. This corridor scores 7/10. That is an editorial ranking we use to prioritise how deeply we cover a route — it is not a passenger count and not a price index. A high score means a corridor people search and where options exist, which usually means price competition. A low score does not mean a bad route; it means fewer options, and where options are few, flexibility gets expensive.

What frequency tells you when plans break. 35 weekly departures is ~5 departures a day — if one departure is cancelled there is normally another the same day. That is why frequency matters more than price for anyone with a fixed commitment at the other end. A thin corridor deserves a buffer day before anything that cannot move, not because the airline is poor but because there is no spare inventory to shift you onto.

Airlines & baggage

Baseline baggage on BKK–HAN runs 7–30 kg across the 3 of 4 carriers on the route for which we hold a row. These are carrier reference baselines, not entitlements attached to every ticket: cabin class, fare brand and frequent-flyer status all change the weight you actually get.

Two pricing models on one corridor. Thai Airways and Vietnam Airlines record a baseline up to 30 kg with baggage, meal and seat selection already inside the fare; Thai AirAsia price each of those separately. The difference the table cannot show is what happens when the flight goes wrong: a full-service carrier has the network and the agreements to move you onto something else, while an unbundled ticket is usually limited to the next departure of the same airline.

The labour-route uplift is conditional. Our data records a +10 kg uplift for Thai Airways on labour corridors. That uplift is a route-and-fare-class policy, not an entitlement stapled to every ticket: promotional and deep-discount fare brands frequently sit outside it, and the uplift applies to hold baggage only — it does not extend to the cabin allowance. Confirm it at ticketing and get it written on the ticket rather than trusting a promotional page.

Airlines on this route

4 carriers operate BKK–HAN — 2 full-service and 1 low-cost. Alliances present on the route: SkyTeam, Star Alliance. Multiple carriers only affect price when both sides are actually selling in the same window. The lowest fare the feed returned for this route is ฿4,530 on a 2026-10-13 departure.

Four carriers fly BKK-HAN: Thai Airways and Vietnam Airlines on the full-service side, with Thai AirAsia and VietJet Air on the low-cost end. The full-service carriers include baggage and a fuller cabin; the low-cost carriers sell baggage and extras separately while pricing the base seat low. On a route this short, comparing the all-in cost once baggage is added is the fair way to weigh a low-cost fare against a full-service one.

Compare totals, not headline numbers. Thai AirAsia price the seat low and sell bag, seat and meal separately; Thai Airways and Vietnam Airlines fold them into the fare. Comparing the first number you see compares two different products. Add one bag and one seat assignment on both sides, then read the final figure. On medium-haul and longer, the remaining gap is frequently smaller than the search page suggests.

Monthly market-low pattern (THB)

Fare trends

Between 2026-W20 and 2026-W31 we captured the BKK–HAN low 8 times, ranging ฿2,530 to ฿4,778 — a 89% spread. The cheapest reading fell in week 2026-W24, and from first capture to last the low moved up 3%.

BKK-HAN fares stay competitive given the frequency, rising around Lunar New Year, the year-end holidays and the Thai school breaks. For those peaks, six to ten weeks of lead time is sensible. Outside them, the low-cost carriers’ early fares are the cheapest, and three to six weeks usually finds a good THB price. Mid-week departures tend to be softer than weekends.

The price is attached to a date. Our most recent low is tied to a 2026-10-13 departure. Fares on international corridors move with the day of week and the holiday calendar more than most travellers expect, and shifting the date by one or two days usually does more for the price than switching airline. If your dates are fixed, read this number as a theoretical floor rather than something you will be offered.

Seasonality & best time to book

Our catalogue lists 4 carriers on this city pair. BKK–HAN is a regional corridor with a shorter booking window than long-haul. The fare tracks low-cost promotional cycles and Thai long weekends more than any season at the destination, and Songkran plus the consecutive-holiday blocks are the tightest weeks of the year.

Bangkok–Hanoi fares move with demand. The cheapest windows fall outside school holidays, Songkran and New Year; book 4–8 weeks ahead for normal dates.

Frequency is seasonal too, not just price. The 35 weekly departures in our catalogue is an estimate of the standard schedule; carriers add and cut rotations by season. That means the cheapest month can also be the month with the fewest options — and with fewer rotations, one cancellation hurts more. Read price and frequency together.

The booking window matters more than the booking day. On a 1.8-hour corridor the fare tracks how many seats remain in each fare bucket, not which weekday you click buy. The folklore about a magic booking day has no support in the series we capture. What does show up is widening your travel dates by a day or two.

About Hanoi

Hanoi (HAN) sits in Vietnam. The flight from Bangkok runs about 1.8 hours. The trend figures rest on 8 weekly captures since week 2026-W20. This corridor scores 7/10 on our own catalogue demand ranking. Our catalogue lists 4 carriers on this city pair.

Hanoi is Vietnam’s capital, an older and more measured city than Ho Chi Minh City, built around lakes and a dense, atmospheric old quarter with French-era boulevards alongside. It has a strong food culture and a slower, more traditional feel. For travellers from Bangkok, Hanoi is both a destination in its own right and the natural starting point for northern Vietnam — Halong Bay, Ninh Binh and the mountain provinces are all reached from here. The cooler months are the most comfortable for the climate.

Local time at the destination. Hanoi runs on Asia/Ho_Chi_Minh, the same as Bangkok. The gap holds all year; the zone does not shift its clocks. The offset matters most on overnight flights, because the times on a ticket are local at each end rather than an elapsed duration. Misreading the arrival time is a common way to book a transfer or a hotel night on the wrong date.

Passenger rights on BKK–HAN

Our catalogue lists 4 carriers on this city pair. Departures from Thailand fall under Thailand CAAT; the return from Hanoi falls under Vietnam CAAV. The two regimes are not the same, and what you are owed changes with the direction of travel and the nationality of the operating carrier — never with the fare you paid.

No European-style compensation schedule applies here. The destination sits with Vietnam CAAV, which typically imposes duty of care, re-routing and refund obligations but no fixed EU261-style cash bands. The enforceable floor is therefore the airline’s own conditions of carriage plus Thailand CAAT rules for departures from Thailand. Read the conditions of carriage before you buy — that is the document that actually binds you.

Baggage and delay are governed by different instruments. If a bag is lost or arrives late on an international journey, the basis of claim is the Montreal Convention 1999, which applies where both the origin and destination states are parties. Its ceilings are denominated in SDR and revised periodically, so only the current figure is citable. The practical consequence is that the two claims are independent: having no delay-compensation right does not remove a baggage claim, and the report should be filed at the baggage desk before you leave the airport.

FAQ

Which airlines fly Bangkok to Hanoi?

The BKK-HAN route is operated by Thai Airways, Vietnam Airlines, Thai AirAsia and VietJet Air. Compare baggage, alliances and fares in the table above.

How long and how often is the BKK-HAN flight?

Block time is ~1.8h, with ~35 flights per week across all carriers.

When is BKK-HAN cheapest to book?

The lowest fare our feed returned for this route is ~฿2,360. Book 4–8 weeks ahead; avoid Songkran, school holidays and peak season to save 15–30%.

What exactly is the lowest fare shown on this page?

It is the cheapest fare our cache has recorded on BKK–HAN, captured one snapshot at a time. It is not an average, not a live quote and not a guarantee that a seat still exists at that price. Use it as a reference floor, then check live pricing.

What is the difference between a direct and a nonstop flight?

Direct means the flight number does not change, but the aircraft may still land en route. Nonstop means no intermediate landing at all. If the clock matters, filter on nonstop, not direct.

If my BKK–HAN flight is cancelled, who is responsible?

The destination sits with Vietnam CAAV, which generally imposes duty of care, re-routing and refunds but no fixed EU261-style cash bands. The enforceable floor is the airline’s conditions of carriage plus Thailand CAAT rules for departures from Thailand.

Will my bag be through-checked if I book two separate tickets?

No. Through-checking happens only when every sector is on one ticket or an interline agreement exists. On separate tickets you reclaim the bag, clear the transit country’s immigration and check in again — and a missed connection is a new ticket at your cost.

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Related

• BKK airport
• HAN airport