Cheap flights from the United States to Siem Reap from $328

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United States to Siem Reap departing on 4/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from the United States to Siem Reap

Recent round-trip flight deals from the United States to Siem Reap

Enter your travel dates to find the best prices.
Singapore Airlines Logo
10:15 am - 9:40 am
SEA
-
SAI
33h 25m
1 stop
Singapore Airlines Logo
10:30 am - 8:45 am
SAI
-
SEA
36h 15m
1 stop
$504Singapore Airlines
Thu, Sep 17 - Wed, Oct 7
Singapore Airlines Logo
10:15 am - 9:40 am
SEA
-
SAI
33h 25m
1 stop
Singapore Airlines Logo
4:00 pm - 8:45 am
SAI
-
SEA
30h 45m
1 stop
$506Singapore Airlines
Thu, Sep 17 - Wed, Oct 7
Singapore Airlines Logo
12:05 am - 3:10 pm
LAX
-
SAI
25h 05m
1 stop
Singapore Airlines Logo
10:30 am - 10:10 pm
SAI
-
LAX
25h 40m
1 stop
$611Singapore Airlines
Mon, Aug 24 - Sat, Aug 29
Singapore Airlines Logo
2:20 pm - 9:40 am
LAX
-
SAI
29h 20m
2 stops
Singapore Airlines Logo
10:30 am - 10:10 pm
SAI
-
LAX
25h 40m
1 stop
$666Singapore Airlines
Tue, Aug 25 - Sat, Aug 29
China Eastern Logo
12:30 pm - 8:10 pm
LAX
-
SAI
41h 40m
2 stops
China Eastern Logo
9:10 pm - 10:05 am
SAI
-
LAX
26h 55m
2 stops
$831China Eastern
Mon, May 11 - Wed, May 27
Multiple Airlines Logo
12:30 pm - 11:15 am
LAX
-
SAI
32h 45m
2 stops
Multiple Airlines Logo
9:10 pm - 10:05 am
SAI
-
LAX
26h 55m
2 stops
$991Multiple Airlines
Sat, May 9 - Wed, May 27
Multiple Airlines Logo
1:00 pm - 9:05 am
SFO
-
SAI
30h 05m
2 stops
Multiple Airlines Logo
12:55 pm - 11:15 pm
SAI
-
SFO
24h 20m
2 stops
$1,002Multiple Airlines
Wed, May 6 - Thu, Jun 11
Vietnam Airlines Logo
10:50 pm - 6:20 pm
SFO
-
SAI
29h 30m
1 stop
Vietnam Airlines Logo
9:30 pm - 5:00 pm
SAI
-
SFO
34h 30m
1 stop
$1,017Vietnam Airlines
Sat, May 2 - Sat, Nov 28
Emirates Logo
11:00 pm - 9:30 pm
JFK
-
SAI
35h 30m
2 stops
Emirates Logo
11:50 pm - 8:50 am
SAI
-
JFK
44h 00m
2 stops
$1,059Emirates
Tue, Apr 28 - Tue, May 5
Emirates Logo
11:00 pm - 9:30 pm
JFK
-
SAI
35h 30m
2 stops
Emirates Logo
11:50 pm - 6:55 pm
SAI
-
JFK
54h 05m
3 stops
$1,060Emirates
Tue, Apr 28 - Tue, May 5

Lufthansa flights from United States to Siem Reap

Our best Lufthansa deals on United States to Siem Reap flight tickets
Lufthansa
Jun 7
CLT6:40 pmCharlotte Douglas
52h 00m
2 stops
SAI9:40 amSiem Reap–Angkor Intl
Jun 23
SAI10:30 amSiem Reap–Angkor Intl
41h 15m
2 stops
CLT4:45 pmCharlotte Douglas
$2,348
Lufthansa
Apr 7
CLT6:40 pmCharlotte Douglas
52h 00m
2 stops
SAI9:40 amSiem Reap–Angkor Intl
Apr 28
SAI7:30 pmSiem Reap–Angkor Intl
32h 15m
3 stops
CLT4:45 pmCharlotte Douglas
$4,290
Lufthansa
Apr 7
CLT6:40 pmCharlotte Douglas
52h 00m
2 stops
SAI9:40 amSiem Reap–Angkor Intl
Apr 27
SAI7:30 pmSiem Reap–Angkor Intl
32h 15m
3 stops
CLT4:45 pmCharlotte Douglas
$4,712

Singapore Airlines flights from United States to Siem Reap

Our best Singapore Airlines deals on United States to Siem Reap flight tickets
Singapore Airlines
Sep 17
SEA10:15 amSeattle/Tacoma Intl
33h 25m
1 stop
SAI9:40 amSiem Reap–Angkor Intl
Oct 7
SAI10:30 amSiem Reap–Angkor Intl
36h 15m
1 stop
SEA8:45 amSeattle/Tacoma Intl
$504
Singapore Airlines
Sep 17
SEA10:15 amSeattle/Tacoma Intl
33h 25m
1 stop
SAI9:40 amSiem Reap–Angkor Intl
Oct 7
SAI4:00 pmSiem Reap–Angkor Intl
30h 45m
1 stop
SEA8:45 amSeattle/Tacoma Intl
$506
Singapore Airlines
Aug 24
LAX12:05 amLos Angeles
25h 05m
1 stop
SAI3:10 pmSiem Reap–Angkor Intl
Aug 29
SAI10:30 amSiem Reap–Angkor Intl
25h 40m
1 stop
LAX10:10 pmLos Angeles
$611

momondo Fare Finder

 
Customize your flight search to find flights from United States to Siem Reap that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated April 1, 2026.
Use the filters below to find and compare flights from the United States to Siem Reap that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleSiem Reap

SEA - SAI

SEASAI

Seattle/Tacoma Intl

Thu 9/17

10:15 am-9:40 am

1 stop33h 25m

Siem Reap–Angkor Intl

Wed 10/7

10:30 am-8:45 am

1 stop36h 15m

$504

SeattleSiem Reap

SEA - SAI

SEASAI

Seattle/Tacoma Intl

Thu 9/17

10:15 am-9:40 am

1 stop33h 25m

Siem Reap–Angkor Intl

Wed 10/7

4:00 pm-8:45 am

1 stop30h 45m

$506
Quickest round-trip

Los AngelesSiem Reap

LAX - SAI

LAXSAI

Los Angeles

Mon 8/24

12:05 am-3:10 pm

1 stop25h 05m

Siem Reap–Angkor Intl

Sat 8/29

10:30 am-10:10 pm

1 stop25h 40m

$611

Los AngelesSiem Reap

LAX - SAI

LAXSAI

Los Angeles

Tue 8/25

2:20 pm-9:40 am

2 stops29h 20m

Siem Reap–Angkor Intl

Sat 8/29

10:30 am-10:10 pm

1 stop25h 40m

$666

Los AngelesSiem Reap

LAX - SAI

LAXSAI

Los Angeles

Mon 5/11

12:30 pm-8:10 pm

2 stops41h 40m

Siem Reap–Angkor Intl

Wed 5/27

9:10 pm-10:05 am

2 stops26h 55m

$831

Los AngelesSiem Reap

LAX - SAI

LAXSAI

Los Angeles

Sat 5/9

12:30 pm-11:15 am

2 stops32h 45m

Siem Reap–Angkor Intl

Wed 5/27

9:10 pm-10:05 am

2 stops26h 55m

$991

San FranciscoSiem Reap

SFO - SAI

SFOSAI

San Francisco

Wed 5/6

1:00 pm-9:05 am

2 stops30h 05m

Siem Reap–Angkor Intl

Thu 6/11

12:55 pm-11:15 pm

2 stops24h 20m

$1,002

San FranciscoSiem Reap

SFO - SAI

SFOSAI

San Francisco

Sat 5/2

10:50 pm-6:20 pm

1 stop29h 30m

Siem Reap–Angkor Intl

Sat 11/28

9:30 pm-5:00 pm

1 stop34h 30m

$1,017

New YorkSiem Reap

JFK - SAI

JFKSAI

New York John F Kennedy Intl

Tue 4/28

11:00 pm-9:30 pm

2 stops35h 30m

Siem Reap–Angkor Intl

Tue 5/5

11:50 pm-8:50 am

2 stops44h 00m

$1,059

New YorkSiem Reap

JFK - SAI

JFKSAI

New York John F Kennedy Intl

Tue 4/28

11:00 pm-9:30 pm

2 stops35h 30m

Siem Reap–Angkor Intl

Tue 5/5

11:50 pm-6:55 pm

3 stops54h 05m

$1,060

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from United States to Siem Reap

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Can stopping save me money on United States to Siem Reap flights?

You could potentially save up to 49% on your flight if you consider stops on a United States to Siem Reap flight.

Cheap United States to Siem Reap flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from United States to Siem Reap

Fastest flight time

23h 40m

Direct flights

None
The fastest flight from United States to Siem Reap takes 23h 40m
There are no direct flights from United States to Siem Reap. There are no popular flight routes from United States to Siem Reap.

Frequently asked questions about flying from the United States to Siem Reap

  • When did momondo last update prices for flights from United States to Siem Reap–Angkor Intl Airport?

    Prices for flights from United States to Siem Reap–Angkor Intl Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from United States to Siem Reap–Angkor Intl Airport?

  • How old do you have to be to fly from United States to Siem Reap–Angkor Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from United States to Siem Reap–Angkor Intl Airport.

  • What documentation or ID do you need to fly to Siem Reap–Angkor Intl Airport?

    The travel and health documents you'll need for your trip to Siem Reap–Angkor Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Siem Reap–Angkor Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from United States to Siem Reap

Compare and see reviews for airlines that fly from United States to Siem Reap with momondo
Airline
Rating
Free Cancellation
Price
Singapore AirlinesPriceFrom $523Free CancellationRating
8.2
1,486 reviews
Search Singapore Airlines flights
Vietnam AirlinesPriceFrom $647Free CancellationRating
7.7
252 reviews
Search Vietnam Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from United States to Siem Reap?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from United States to Siem Reap. momondo saves you time and could save you money on your trip.

Can I find flights from United States to Siem Reap with flexible booking policies on momondo?

Yes. All flights to Siem Reap from United States on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from United States to Siem Reap?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Siem Reap from United States.

I’m not ready to book a flight from United States to Siem Reap right now. Can momondo alert me if prices change?

If you are not ready to book a flight from United States to Siem Reap now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Siem Reap and let you know when they change.

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1 adult
Fri 5/1
Fri 5/8

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