Cheap flights from Kathmandu to Siem Reap Angkor

Compare Kathmandu to Siem Reap Angkor flight deals

Find the cheapest month or even day of the year to fly to Siem Reap Angkor

Book the best Siem Reap Angkor fare with no extra fees

Flight deals from Kathmandu to Siem Reap Angkor

Looking for a cheap last-minute deal or the best round-trip flight from Kathmandu to Siem Reap Angkor? Find the lowest prices on one-way and round-trip tickets right here.

Siem Reap.$454 per passenger.Departing Tue, May 27, returning Mon, Jun 9.Round-trip flight with Thai LionAir and Thai AirAsia.Outbound indirect flight with Thai LionAir, departing from Kathmandu on Tue, May 27, arriving in Siem Reap Angkor.Inbound indirect flight with Thai AirAsia, departing from Siem Reap Angkor on Mon, Jun 9, arriving in Kathmandu.Price includes taxes and charges.From $454, select.

Siem Reap.$559 per passenger.Departing Sat, Jul 19, returning Fri, Jul 25.Round-trip flight with Thai Airways and Thai AirAsia.Outbound indirect flight with Thai Airways, departing from Kathmandu on Sat, Jul 19, arriving in Siem Reap Angkor.Inbound indirect flight with Thai AirAsia, departing from Siem Reap Angkor on Fri, Jul 25, arriving in Kathmandu.Price includes taxes and charges.From $559, select.

Siem Reap.$623 per passenger.Departing Fri, Jun 27, returning Wed, Jul 9.Round-trip flight with Singapore Airlines.Outbound indirect flight with Singapore Airlines, departing from Kathmandu on Fri, Jun 27, arriving in Siem Reap Angkor.Inbound indirect flight with Singapore Airlines, departing from Siem Reap Angkor on Wed, Jul 9, arriving in Kathmandu.Price includes taxes and charges.From $623, select.

Siem Reap.$705 per passenger.Departing Mon, Dec 1, returning Mon, Dec 8.Round-trip flight with Thai Airways and AirAsia.Outbound indirect flight with Thai Airways, departing from Kathmandu on Mon, Dec 1, arriving in Siem Reap Angkor.Inbound indirect flight with AirAsia, departing from Siem Reap Angkor on Mon, Dec 8, arriving in Kathmandu.Price includes taxes and charges.From $705, select.

Siem Reap.$786 per passenger.Departing Mon, Oct 27, returning Sun, Nov 2.Round-trip flight with Thai Airways.Outbound indirect flight with Thai Airways, departing from Kathmandu on Mon, Oct 27, arriving in Siem Reap Angkor.Inbound indirect flight with Thai Airways, departing from Siem Reap Angkor on Sun, Nov 2, arriving in Kathmandu.Price includes taxes and charges.From $786, select.

Siem Reap.$817 per passenger.Departing Fri, Aug 1, returning Tue, Aug 5.Round-trip flight with Singapore Airlines.Outbound indirect flight with Singapore Airlines, departing from Kathmandu on Fri, Aug 1, arriving in Siem Reap Angkor.Inbound indirect flight with Singapore Airlines, departing from Siem Reap Angkor on Tue, Aug 5, arriving in Kathmandu.Price includes taxes and charges.From $817, select.

Siem Reap.$858 per passenger.Departing Mon, Oct 27, returning Fri, Oct 31.Round-trip flight with Thai Airways.Outbound indirect flight with Thai Airways, departing from Kathmandu on Mon, Oct 27, arriving in Siem Reap Angkor.Inbound indirect flight with Thai Airways, departing from Siem Reap Angkor on Fri, Oct 31, arriving in Kathmandu.Price includes taxes and charges.From $858, select.

Find the cheapest month to fly from Kathmandu to Siem Reap Angkor

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Kathmandu to Siem Reap Angkor flights are currently cheapest in July.

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Jan

Feb

Mar

Apr

Kathmandu to Siem Reap Angkor: Alternative routes

Compare routes from Kathmandu to Siem Reap below. You may find an airport to fly into that's cheaper, faster, or easier than Siem Reap Angkor.

Kathmandu to Siem Reap: Flight information

The things to know before you go.

Cheapest flight found	$456
Cheapest month to fly	May

Finding cheap flights from Kathmandu to Siem Reap Angkor: Frequently asked questions

How much are round-trip flights from Kathmandu to Siem Reap Angkor?

The best price we found for a round-trip flight from Kathmandu to Siem Reap Angkor is $456. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

Which airlines fly direct from Kathmandu to Siem Reap Angkor?

Currently, there are no airlines that fly direct from Kathmandu to Siem Reap Angkor. But we found flights with one or more stops from $454.

How many flights are there a week from Kathmandu to Siem Reap Angkor?

There are no flights flying from Kathmandu to Siem Reap Angkor, as of May 2025.

When is the cheapest time to fly from Kathmandu to Siem Reap Angkor?

The cheapest month to fly from Kathmandu to Siem Reap Angkor is usually May 2025.

Which upcoming date is cheapest to fly from Kathmandu Airport to Siem Reap Angkor Airport on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Kathmandu Airport to Siem Reap Angkor Airport on Tuesday, May 27, 2025.

Can I get a direct flight from Kathmandu Airport to Siem Reap Angkor Airport?

No airlines currently offer direct flights between Kathmandu Airport and Siem Reap Angkor Airport. Most routes have one or more stops.

How can I find the best flight deal to Siem Reap Angkor?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Siem Reap Angkor but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Siem Reap?

We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to Siem Reap is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly with from Kathmandu Airport to Siem Reap Angkor?

Currently, Thai LionAir offers the cheapest flight tickets to Siem Reap Angkor.

Traveling from Tribhuvan International Airport (KTM) to Siem Reap-Ankor International Airport (SAI): what you need to know

Siem Reap is one hour 12 minutes ahead of Kathmandu and follows the UTC+7 timezone.
For a smooth journey, arrive at the airport two hours ahead of international flights and one hour before domestic departures. This way, you'll have plenty of time to board your KTM to SAI flight.
You'll likely experience longer lines during popular months like September. Arriving up to four hours ahead of an international flight and two hours for a domestic departure is a good idea.
We make it a breeze to book a flight with a stopover. To see all your options for tickets from Tribhuvan International Airport to Siem Reap-Ankor International Airport, deselect 'Direct flights only.' Then, pick a flight with a stop long enough to visit the city of your choice. Stopovers between KTM and SAI include:
- Suvarnabhumi Airport
- Changi International Airport
- Kuala Lumpur International Airport

How to find the cheapest flights from Tribhuvan International Airport (KTM) to Siem Reap-Ankor International Airport (SAI)

$227 is currently the best price for a one-way Tribhuvan International Airport to Siem Reap-Ankor International Airport flight. Return flights start at $454. These fares may change based on demand and availability.
To find cheap tickets from KTM to SAI, book early. Airlines tend to offer their best fares when flights are first released.
The 'Whole month' tool shows you the cheapest flights from Tribhuvan International Airport to Siem Reap-Ankor International Airport across each month. It's a great way to snap up a bargain if your dates are flexible.
Save time looking for cheap flights from KTM to SAI by setting up a Price Alert. You'll get an email or notification through the app when a lower fare pops up.
Tailor your trip with filters. Pick your ideal arrival and departure times, total journey duration and airlines. You can also sort results by 'Best,' 'Cheapest' or 'Fastest' flights from Tribhuvan International Airport to Siem Reap-Ankor International Airport.

Handy information about Tribhuvan International Airport (KTM)

Tribhuvan International Airport is about 5 kilometers from central Kathmandu. If you're catching a cab, ride-sharing or driving from the center, it'll take 15 minutes or so to arrive, depending on the traffic.
Get your vacation off to a hassle-free start by staying near KTM. Whether you're catching an early flight from Tribhuvan International Airport to Siem Reap-Ankor International Airport or want to avoid feeling rushed, these hotels are ideal:

Arriving at Siem Reap-Ankor International Airport (SAI)

Consider checking in to Chansor Community Homestay 18 after touching down from your Tribhuvan International Airport to Siem Reap-Ankor International Airport flight. It's only a short drive from SAI and a good option if you're eager to catch some z's soon after landing.

Getting from Siem Reap-Ankor International Airport (SAI) to central Siem Reap

Siem Reap-Ankor International Airport is roughly 48 kilometers from the center of Siem Reap. The drive time takes around 1 hour.

When to fly to Siem Reap-Ankor International Airport (SAI)

It's time to work out your dates for your flight from Tribhuvan International Airport to Siem Reap-Ankor International Airport. April is the busiest month to visit Siem Reap. If you prefer a more relaxed vibe, go in April.
The warmest month in Siem Reap is March, with temperatures ranging between 22ºC (72ºF) and 38ºC (100ºF). Book your flights from Tribhuvan International Airport to Siem Reap-Ankor International Airport in this month if you like this kind of weather.
Search for cheap tickets from KTM to SAI in January if you like traveling in cooler conditions. Temperatures are at their lowest then, ranging between 18ºC (64ºF) and 33ºC (91ºF) on average.

Explore more of Cambodia

Siem Reap is easy to fall in love with, but there are so many other parts of Cambodia waiting to be discovered. Around 225 kilometers south-east of Siem Reap, a trip to Phnom Penh will fill your itinerary to the brim. Start with leading sights like Royal Palace, Tuol Sleng Genocide Museum and Wat Phnom.
If there's time to check out another side of Cambodia, head for Sihanoukville, about 306 kilometers south of Siem Reap. Ochheuteal Beach, Wat Leu Temple and Wat Krom Temple are the start of reasons to visit.