Bangkok to Siem Reap is the classic short hop to the temples of Angkor — barely an hour in the air to the gateway for Angkor Wat and Cambodia’s most-visited region. Since late 2023 the flights land at a brand-new airport well outside town, so the arrival is different from the old days. This guide covers who flies the route non-stop, a fair return fare in baht, and how the new airport changes your transfer into Siem Reap.
Route: Bangkok (Suvarnabhumi BKK / Don Mueang DMK) → Siem Reap–Angkor International (SAI)
Distance: approximately 360 km (225 miles)
Non-stop flight time: about 1h – 1h 10m
Direct flights: Yes — Bangkok Airways, Thai Airways, Thai AirAsia and Thai Vietjet fly non-stop. One of the shortest international routes you can book.
Fares from Bangkok to Siem Reap (THB)
This is a tourist-driven route, so fares track the Angkor visiting season: the cool, dry months from November to February are the busiest and dearest, while the green season from May to September is cheaper and quieter. Because it’s a short international sector with fewer carriers than the domestic routes, fares sit a little higher than Bangkok–Phuket. The table below shows when the route is busiest. We no longer print per-month fare estimates here, because they were never measured.
| Month | Typical return (economy) | Demand |
|---|---|---|
| January | — | very high |
| February | — | high |
| March | — | medium-high |
| April | — | medium-high (New Year holidays) |
| May | — | medium |
| June | — | low |
| July | — | low-medium |
| August | — | medium |
| September | — | low |
| October | — | low-medium |
| November | — | high |
| December | — | very high |
We do not quote a target fare for this route. Our price tracking holds no recorded observations for it, so a “typical” or “good deal” figure here would be an estimate dressed up as a measurement — so this page leaves it out rather than guess. The seasonal pattern above is the part we can stand behind; check the live fare for the number.
Airlines on this route
Non-stop (about 1 hour):
- Bangkok Airways — the long-standing operator on this route, full service from Suvarnabhumi (BKK) with lounge access on many fares and generous baggage.
- Thai Airways — the flag carrier, non-stop from Suvarnabhumi with bags and a snack included.
- Thai AirAsia — low-cost, mainly from Don Mueang (DMK); usually the cheapest headline fare.
- Thai Vietjet — another budget option with low base fares and add-on bags.
Bangkok Airways has flown this route for years and still runs the most frequencies, so full-service comfort is easy to find. If price is the priority, the budget carriers from Don Mueang undercut it — just add your bag before comparing the all-in total.
When to book & how to save
- Book 4–10 weeks ahead for the cool-season months; the Angkor high season fills flights and the cheapest seats disappear early.
- Travel in the green season (May–September) for the lowest fares and thinner crowds at the temples; the rain is usually short and the landscape at its greenest.
- Compare budget all-in: a checked bag on a Thai AirAsia or Thai Vietjet fare can bring it close to Bangkok Airways, which includes the bag.
- Mind the Bangkok airport: full-service flights leave from Suvarnabhumi (BKK), budget ones from Don Mueang (DMK).
- Sort your Cambodia e-visa in advance and remember US dollars are widely used alongside the riel — handy for the airport transfer and Angkor passes.
Arriving in Siem Reap
Flights now land at Siem Reap–Angkor International Airport (SAI), which opened in October 2023 and replaced the old in-town airport. It sits roughly 40 km southeast of Siem Reap, so the transfer is longer than it used to be: a taxi or ride-hail into town takes about 45–60 minutes and costs around ฿700–฿1,200 equivalent, while airport shuttle buses and many hotel pickups run the same route more cheaply. Factor the extra distance into your arrival timing, especially for a late flight.
Frequently asked questions
How long is the flight from Bangkok to Siem Reap?
The non-stop flight takes about 1 hour to 1 hour 10 minutes, making it one of the shortest international routes you can book. Even with the longer transfer from the new airport, you can leave Bangkok in the morning and be at the temples the same afternoon.
Are there direct flights from Bangkok to Siem Reap?
Yes. Bangkok Airways and Thai Airways fly non-stop from Suvarnabhumi, and Thai AirAsia and Thai Vietjet fly non-stop from Don Mueang. Bangkok Airways has the longest history on the route and runs frequent departures throughout the day.
How much does it cost to fly from Bangkok to Siem Reap?
A typical economy return runs about ฿4,500–฿9,000 depending on season and airline. Budget carriers booked early in the green season can dip toward ฿4,500 return, while the November–February Angkor high season and December peak reach the top of the range. Budget one-way fares can start around ฿2,500.
What is the cheapest month to fly from Bangkok to Siem Reap?
June and September are usually the cheapest months to fly. Avoid December and January, plus the mid-April New Year holidays, which are the busiest and most expensive times for the Angkor region.
Which airlines fly from Bangkok to Siem Reap?
Non-stop: Bangkok Airways and Thai Airways (full service, from Suvarnabhumi) plus Thai AirAsia and Thai Vietjet (budget, from Don Mueang). Bangkok Airways runs the most frequencies; the budget carriers set the lowest fares.
Which airport do I fly into in Siem Reap?
You land at the new Siem Reap–Angkor International Airport (SAI), which opened in October 2023 about 40 km from the town and replaced the old airport near the centre. Some older listings still show the previous airport, so use the new SAI code when checking your transfer.
How far in advance should I book Bangkok to Siem Reap flights?
Aim for 4 to 10 weeks ahead, and earlier still for the November–February high season, when the temples are busiest and fares climb. In the quieter green season you can leave it a little later and still find good prices.
Is it cheaper to fly on weekdays?
Often, yes. Midweek departures (Tuesday to Thursday) tend to undercut weekend travel. On such a short route the saving is modest, but combined with an early booking and green-season dates it’s the easiest way to keep the fare down.
Route and schedule details from current airline schedules; last reviewed July 2026. Prices are indicative economy returns and change with demand — always check the live fare before booking.
