$278 Find Cheap Flights to Siem Reap

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from the United States to Siem Reap departing on 3/3. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Siem Reap

 
These are the airlines KAYAK users have selected most often from within our search results for flights to Siem Reap, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to Siem Reap, as well as popular online travel agencies
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Flight Deals

Book Cheap Siem Reap Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights to Siem Reap that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals to Siem Reap

Sat, Mar 14 - Sat, Mar 21
China Eastern Logo
1:00 pm - 9:00 pm
SFO
-
SAI
66h 00m
2 stops
China Eastern Logo
10:00 pm - 10:00 am
SAI
-
SFO
50h 00m
2 stops
$784China Eastern
Sat, Mar 14 - Sat, Mar 21
China Eastern Logo
1:00 pm - 9:00 pm
SFO
-
SAI
66h 00m
3 stops
China Eastern Logo
10:00 pm - 10:00 am
SAI
-
SFO
50h 00m
3 stops
$801China Eastern
Wed, May 20 - Wed, May 27
Singapore Airlines Logo
4:12 pm - 9:40 am
SEA
-
SAI
27h 28m
2 stops
Singapore Airlines Logo
10:30 am - 8:45 am
SAI
-
SEA
36h 15m
1 stop
$816Singapore Airlines
Wed, Apr 8 - Sun, Apr 19
United Airlines Logo
5:45 pm - 9:40 am
SEA
-
SAI
25h 55m
2 stops
United Airlines Logo
10:30 am - 10:39 am
SAI
-
SEA
38h 09m
2 stops
$837United Airlines
Wed, Feb 25 - Wed, Mar 11
United Airlines Logo
12:32 pm - 3:55 pm
SEA
-
SAI
60h 23m
2 stops
United Airlines Logo
10:45 am - 4:14 pm
SAI
-
SEA
43h 29m
2 stops
$839United Airlines
Sat, Mar 14 - Fri, Mar 27
Vietnam Airlines Logo
10:10 pm - 5:30 pm
SFO
-
SAI
29h 20m
1 stop
Vietnam Airlines Logo
6:30 pm - 5:55 pm
SAI
-
SFO
37h 25m
1 stop
$846Vietnam Airlines
Sat, Mar 14 - Fri, Mar 27
Vietnam Airlines Logo
10:10 pm - 8:30 pm
SFO
-
SAI
32h 20m
1 stop
Vietnam Airlines Logo
9:30 pm - 5:55 pm
SAI
-
SFO
34h 25m
1 stop
$849Vietnam Airlines
Fri, May 1 - Sun, May 10
Singapore Airlines Logo
8:55 pm - 3:10 pm
LAX
-
SAI
28h 15m
1 stop
Singapore Airlines Logo
10:30 am - 7:10 pm
SAI
-
LAX
22h 40m
1 stop
$855Singapore Airlines
Tue, Apr 7 - Fri, Apr 24
Qatar Airways Logo
7:10 am - 9:00 am
MSP
-
SAI
37h 50m
3 stops
Qatar Airways Logo
12:55 pm - 1:58 pm
SAI
-
MSP
37h 03m
3 stops
$1,675Qatar Airways
Tue, Apr 7 - Fri, Apr 24
Qatar Airways Logo
7:10 am - 12:15 pm
MSP
-
SAI
41h 05m
3 stops
Qatar Airways Logo
12:55 pm - 1:58 pm
SAI
-
MSP
37h 03m
3 stops
$1,744Qatar Airways
Booking Insights

KAYAK's insights & trends for flights to Siem Reap

Get data-powered insights and trends for flights to Siem Reap to help you find the cheapest flights, the best time to fly and much more.

How long is the flight to Siem Reap?

An average nonstop flight from the United States to Siem Reap takes 37h 28m, covering a distance of 8408 miles. The shortest route is Ontario (ONT) to Siem Reap (SAI) with an average flight time of 23h 25m.

What is the most popular destination in Siem Reap?

Based on KAYAK flight searches, the most popular destination is Siem Reap (100% of total searches to Siem Reap).

Good to know

Low seasonDecember
Best time to beat the crowds but there is an average 26% increase in price.
Most popular time to fly and prices are also 35% lower on average.

FAQs - booking Siem Reap flights

  • How does KAYAK find such low prices on flights from the United States to Siem Reap?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from the United States to Siem Reap.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from the United States to Siem Reap?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from the United States to Siem Reap is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from the United States to Siem Reap?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from the United States to Siem Reap with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from the United States to Siem Reap?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from the United States to Siem Reap up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Siem Reap

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Siem Reap flight deals.

Reviews of the top 3 airlines flying to Siem Reap

 
See real verified KAYAK customer reviews for airlines flying to Siem Reap. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from the United States to Siem Reap. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from the United States to Siem Reap? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.1
Singapore AirlinesOverall score based on 1434 reviews
8.3Boarding
8.0Comfort
8.6Crew
7.8Food
8.0Entertainment
Airline reviews

I wish there was a little more leg room between the seats. The recline was good and seats overall were comfortable. I also didn’t like the 2-4-2 configuration.

8.0 Excellentpuravi, Dec 2025
EWR - SIN
Read more Singapore Airlines reviews

I wish there was a little more leg room between the seats. The recline was good and seats overall were comfortable. I also didn’t like the 2-4-2 configuration.

toilets could be cleaned more frequently, everything else was pretty good.

The flight crew was phenominal! We couldn't have asked for any better. They were experienced professionals.

Wish the underseat compartment don’t have a restriction, can fit a personal item such as backpack fully like most Boeing

The business class seats were very uncomfortable. When in lie flat position my legs were very restricted.

Crew and service excellent. 2 hour delay for takeoff. SQ app showed flight on time.

Very good flight from Boarding to landing -efficient and comfortable with decent entertainment options

Construction at PDX resulting in very lung walk from the rental car to the gate. SFO, extremely long walk between terminals to get to connecting Singapore airlines flight. My smart watch recorded a total of 3 miles.

Crew and service was excellent, but passengers should be offered a welcome drink before take off which did not happen. Food was very good. Unfortunately the lie-flat bed in business class was one of the most uncomfortable I have experienced. The configuration forces you to sleep with your legs at an angle instead of in a straight line, plus there is very little padding on the bed so it wasn't possible to sleep for more than 2-3 hours on an 18 hour flight. For what the airlines charges for a business class ticket their hard product leaves a lot to be desired.

Everything was great keep up the good work 😁, can't ask for more.

The flight crew and attendants are very professional and polite.

Food and welcome services were good , however we experienced issues with the entertainment system and poor headsets

Very good flight and very kind crew Only thing is I wish there would be a vegetarian option for the meals

Lovely staff, comfortable seats. Transit time was short but they had great processes in place to get us on the plane.

For a domestic flight, seats are ok, but fir us as tall dutchies, the legroom is too small. However, for a short and affordable flight, is not a big problem. Staff is still very nice and a complementary water very welcome.

2 hours delay, time changes started already 2 days before the flight

Average, not more then that. Cannot compete with Singapore Airlines

I bought the front row seat and made and early online check in but they changed my seat to the back row without prior notice. The inflight meal was too poor, only a piece of small finger food. The boarding is a disaster, everyone is stuffed in a bus in chaos. Doesnt worth the money at all.

Poor. Flight was delay without prior notice. Poor boarding. Poor meal service. Plane was dirty and smelly. Does not worth the money.

Overall very nice airline. The seats were cloth unlike leather seats I am accustom to on planes. The food was adequate. I had to use a paper boarding pass as they do not like electronic boarding passes. I scanned my electronic pass, but the gate agent requested the paper pass. Luckily I had a paper pass, although my electronic pass worked and when the paper pass was scanned it stated I was already on board.

Our experience on the Doha to Hyderabad segment was extremely stressful due to prolonged delays and a lack of clear communication from the airline. We were traveling as a family, including children, and the uncertainty around timing and next steps caused significant distress. There was very little proactive information provided during the delay, and we were not given clear written explanations about what was happening or how long it might take. This made it difficult to manage the situation, especially while caring for children in a transit environment. In addition, one member of our party was ultimately unable to continue travel, which added to the emotional strain and disruption of the trip. Overall, the experience highlighted gaps in communication, customer care, and handling of unexpected situations. We are sharing this feedback so that future passengers, especially families, are supported with clearer communication and better assistance during irregular operations.

The seat cushions are absolutely lacking, not sure if they know the passengers are traveling for 14 hours straight, but the padding made our back and butt ache like crazy. The entertainment console had its own problems, either the headphone jack wasn't working or the power outlet via usb or ac outlet was not working. Not to mention the seat handles were not adjustable in some planes in the middle or on the aisle. Qatar/Indigo may be operating a very old fleet of planes to make as much profit as possible, but passengers may not be following them for long, should this treatment of its customers continue. Qatar/Indigo, wake up and do it right by your customers, or they may not be your customers anymore.

It would help id flight crew were not rude and showed some courtesy. They were shouting at passengers and yelling instructions as if we were school children at lunch cafeteria!!

All good. Over four hours flight if provided snacks like Qatar Airways would be better

Lobster starter in business class was not good, tough, served cold, and without butter. Movie selection was missing latest releases, did not offer older classic, high quality movies

Food was absolutely pathetic. I wasted so much food which I thought was inedible. I also loathe the inflight entertainment system which has very little content

My entire row did not have power for the full duration of a 14.5 hour flight. Could not charge any devices such as laptop or phones for the entirety of the long flight. The flight attendants tried to remedy the issue by resetting the power, but were not successful. The only other solution provided was to move me to another seat on the plane which was in the middle row. I had paid for a “preferred” seat that was a window seat. This was a downgrade being offered due to the power issue.

Nothing to complain. The staff and flight was good especially the seats which was better compared than the cloth ones on Qatar airways

I was travelling 3.5 years after. Agree Economy is no business class but the food was mediocre. Ordered a Hindu meal, the salads were bitter . The food was really below quality and had no tast from what I had in the past. Indian Railways probably have a better quality food when compared. However the kids meal was really nice and really appreciate how they were taken care of. The restrooms were dirty .

My flight was with American Airlines 120. The flight was delayed 3 hours and I missed my connection. When I arrived in Doha, the AA staff told me to call an 800 number to rebook a different flight, which was unacceptable. Eventually a Qatar Air staff member helped rebook me on a flight to Manila, that was 12 hours later. They offered me a hotel and meal voucher which I declined, because I didn’t want to leave the airport. Long story short, I spent 12 hours in the Doha airport waiting for my next flight.

Everything you need to know for your flight to Siem Reap