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Cheap flights from Washington, D.C. to Siem Reap from $454

1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Washington, D.C. to Siem Reap

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
2:25 pm - 11:45 amIAD  Washington, D.C. Dulles Intl-SAI Siem Reap–Angkor Intl
33h 20m2 stops Abu Dhabi Zayed Intl Bangkok Suvarnabhumi
Multiple Airlines Logo
4:50 pm - 9:00 amSAI  Siem Reap–Angkor Intl-IAD Washington, D.C. Dulles Intl
28h 10m2 stops Bangkok Suvarnabhumi Abu Dhabi Zayed Intl
$1,063Multiple Airlines
Tue, Feb 2 - Tue, Feb 9
Emirates Logo
10:35 am - 9:10 pmIAD  Washington, D.C. Dulles Intl-SAI Siem Reap–Angkor Intl
46h 35m2 stops Dubai Intl Bangkok Suvarnabhumi
Emirates Logo
11:50 pm - 8:35 amSAI  Siem Reap–Angkor Intl-IAD Washington, D.C. Dulles Intl
44h 45m2 stops Bangkok Suvarnabhumi Dubai Intl
$1,108Emirates
Tue, Jan 12 - Tue, Jan 26
Emirates Logo
10:35 am - 9:10 pmIAD  Washington, D.C. Dulles Intl-SAI Siem Reap–Angkor Intl
46h 35m2 stops Dubai Intl Bangkok Suvarnabhumi
Emirates Logo
11:50 pm - 8:35 amSAI  Siem Reap–Angkor Intl-IAD Washington, D.C. Dulles Intl
44h 45m2 stops Bangkok Suvarnabhumi Dubai Intl
$1,158Emirates
Thu, Jan 14 - Tue, Jan 26
Multiple Airlines Logo
8:05 pm - 12:40 pmIAD  Washington, D.C. Dulles Intl-SAI Siem Reap–Angkor Intl
28h 35m2 stops Doha Hamad Intl Bangkok Suvarnabhumi
Multiple Airlines Logo
9:55 am - 3:55 pmSAI  Siem Reap–Angkor Intl-IAD Washington, D.C. Dulles Intl
42h 00m2 stops Bangkok Suvarnabhumi Doha Hamad Intl
$1,311Multiple Airlines
Sat, Mar 6 - Sun, Mar 14
Multiple Airlines Logo
2:25 pm - 5:25 pmIAD  Washington, D.C. Dulles Intl-SAI Siem Reap–Angkor Intl
39h 00m2 stops Abu Dhabi Zayed Intl Phnom Penh Techo Intl
Multiple Airlines Logo
4:50 pm - 9:00 amSAI  Siem Reap–Angkor Intl-IAD Washington, D.C. Dulles Intl
28h 10m2 stops Bangkok Suvarnabhumi Abu Dhabi Zayed Intl
$1,324Multiple Airlines
Tue, Jan 12 - Tue, Jan 19
Lufthansa Logo
5:35 pm - 9:55 amIAD  Washington, D.C. Dulles Intl-SAI Siem Reap–Angkor Intl
52h 20m2 stops Munich Franz Josef Strauss Singapore Changi
Lufthansa Logo
4:50 pm - 3:35 pmSAI  Siem Reap–Angkor Intl-IAD Washington, D.C. Dulles Intl
34h 45m2 stops Singapore Changi Munich Franz Josef Strauss
$1,351Lufthansa
Mon, Jan 11 - Wed, Jan 20
Lufthansa Logo
6:00 pm - 9:55 amIAD  Washington, D.C. Dulles Intl-SAI Siem Reap–Angkor Intl
27h 55m2 stops Frankfurt am Main Singapore Changi
Lufthansa Logo
4:50 pm - 3:35 pmSAI  Siem Reap–Angkor Intl-IAD Washington, D.C. Dulles Intl
34h 45m2 stops Singapore Changi Munich Franz Josef Strauss
$1,356Lufthansa
Tue, Jan 12 - Wed, Jan 20
Multiple Airlines Logo
12:20 pm - 8:45 amIAD  Washington, D.C. Dulles Intl-SAI Siem Reap–Angkor Intl
56h 25m2 stops Tokyo Haneda Bangkok Suvarnabhumi
Multiple Airlines Logo
10:25 pm - 3:40 pmSAI  Siem Reap–Angkor Intl-IAD Washington, D.C. Dulles Intl
53h 15m2 stops Ho Chi Minh City Tokyo Haneda
$1,367Multiple Airlines
Wed, Jan 13 - Sat, Jan 23
Multiple Airlines Logo
1:30 pm - 9:15 amIAD  Washington, D.C. Dulles Intl-SAI Siem Reap–Angkor Intl
31h 45m2 stops Istanbul Bangkok Suvarnabhumi
Multiple Airlines Logo
7:25 pm - 7:25 pmSAI  Siem Reap–Angkor Intl-IAD Washington, D.C. Dulles Intl
36h 00m2 stops Bangkok Suvarnabhumi Istanbul
$1,370Multiple Airlines
Sat, Jan 16 - Sun, Jan 24
Lufthansa Logo
6:00 pm - 9:55 amIAD  Washington, D.C. Dulles Intl-SAI Siem Reap–Angkor Intl
51h 55m2 stops Frankfurt am Main Singapore Changi
Lufthansa Logo
7:25 pm - 3:35 pmSAI  Siem Reap–Angkor Intl-IAD Washington, D.C. Dulles Intl
32h 10m2 stops Bangkok Suvarnabhumi Munich Franz Josef Strauss
$1,372Lufthansa
Mon, Jan 11 - Wed, Jan 20

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Emirates flights from Washington, D.C. to Siem Reap

Our best Emirates deals on Washington, D.C. to Siem Reap flight tickets
Emirates
Jan 12
IAD10:35 amWashington, D.C. Dulles Intl
46h 35m
2 stops
SAI9:10 pmSiem Reap–Angkor Intl
Jan 26
SAI11:50 pmSiem Reap–Angkor Intl
44h 45m
2 stops
IAD8:35 amWashington, D.C. Dulles Intl
$1,108
Emirates
Jan 14
IAD10:35 amWashington, D.C. Dulles Intl
46h 35m
2 stops
SAI9:10 pmSiem Reap–Angkor Intl
Jan 26
SAI11:50 pmSiem Reap–Angkor Intl
44h 45m
2 stops
IAD8:35 amWashington, D.C. Dulles Intl
$1,158
Emirates
Jan 14
IAD12:50 pmWashington, D.C. Dulles Intl
44h 20m
3 stops
SAI9:10 pmSiem Reap–Angkor Intl
Jan 26
SAI11:50 pmSiem Reap–Angkor Intl
44h 45m
2 stops
IAD8:35 amWashington, D.C. Dulles Intl
$1,573

Lufthansa flights from Washington, D.C. to Siem Reap

Our best Lufthansa deals on Washington, D.C. to Siem Reap flight tickets
Lufthansa
Jan 11
IAD5:35 pmWashington, D.C. Dulles Intl
52h 20m
2 stops
SAI9:55 amSiem Reap–Angkor Intl
Jan 20
SAI4:50 pmSiem Reap–Angkor Intl
34h 45m
2 stops
IAD3:35 pmWashington, D.C. Dulles Intl
$1,351
Lufthansa
Jan 12
IAD6:00 pmWashington, D.C. Dulles Intl
27h 55m
2 stops
SAI9:55 amSiem Reap–Angkor Intl
Jan 20
SAI4:50 pmSiem Reap–Angkor Intl
34h 45m
2 stops
IAD3:35 pmWashington, D.C. Dulles Intl
$1,356
Lufthansa
Jan 11
IAD6:00 pmWashington, D.C. Dulles Intl
51h 55m
2 stops
SAI9:55 amSiem Reap–Angkor Intl
Jan 20
SAI7:25 pmSiem Reap–Angkor Intl
32h 10m
2 stops
IAD3:35 pmWashington, D.C. Dulles Intl
$1,372

momondo Fare Finder

 
Use the filters below to find and compare flights from Washington, D.C. to Siem Reap that are best for you.

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Washington, D.C.Siem Reap

IAD Washington, D.C. Dulles Intl - SAI Siem Reap–Angkor Intl

IADSAI

Washington, D.C. Dulles Intl

Tue 2/2

2:25 pm-11:45 am

2 stops33h 20m

Siem Reap–Angkor Intl

Tue 2/9

4:50 pm-9:00 am

2 stops28h 10m

$1,063

Washington, D.C.Siem Reap

IAD Washington, D.C. Dulles Intl - SAI Siem Reap–Angkor Intl

IADSAI

Washington, D.C. Dulles Intl

Tue 1/12

10:35 am-9:10 pm

2 stops46h 35m

Siem Reap–Angkor Intl

Tue 1/26

11:50 pm-8:35 am

2 stops44h 45m

$1,108

Washington, D.C.Siem Reap

IAD Washington, D.C. Dulles Intl - SAI Siem Reap–Angkor Intl

IADSAI

Washington, D.C. Dulles Intl

Thu 1/14

10:35 am-9:10 pm

2 stops46h 35m

Siem Reap–Angkor Intl

Tue 1/26

11:50 pm-8:35 am

2 stops44h 45m

$1,158

Washington, D.C.Siem Reap

IAD Washington, D.C. Dulles Intl - SAI Siem Reap–Angkor Intl

IADSAI

Washington, D.C. Dulles Intl

Sat 3/6

8:05 pm-12:40 pm

2 stops28h 35m

Siem Reap–Angkor Intl

Sun 3/14

9:55 am-3:55 pm

2 stops42h 00m

$1,311

Washington, D.C.Siem Reap

IAD Washington, D.C. Dulles Intl - SAI Siem Reap–Angkor Intl

IADSAI

Washington, D.C. Dulles Intl

Tue 1/12

2:25 pm-5:25 pm

2 stops39h 00m

Siem Reap–Angkor Intl

Tue 1/19

4:50 pm-9:00 am

2 stops28h 10m

$1,324

Washington, D.C.Siem Reap

IAD Washington, D.C. Dulles Intl - SAI Siem Reap–Angkor Intl

IADSAI

Washington, D.C. Dulles Intl

Mon 1/11

5:35 pm-9:55 am

2 stops52h 20m

Siem Reap–Angkor Intl

Wed 1/20

4:50 pm-3:35 pm

2 stops34h 45m

$1,351

Washington, D.C.Siem Reap

IAD Washington, D.C. Dulles Intl - SAI Siem Reap–Angkor Intl

IADSAI

Washington, D.C. Dulles Intl

Tue 1/12

6:00 pm-9:55 am

2 stops27h 55m

Siem Reap–Angkor Intl

Wed 1/20

4:50 pm-3:35 pm

2 stops34h 45m

$1,356

Washington, D.C.Siem Reap

IAD Washington, D.C. Dulles Intl - SAI Siem Reap–Angkor Intl

IADSAI

Washington, D.C. Dulles Intl

Wed 1/13

12:20 pm-8:45 am

2 stops56h 25m

Siem Reap–Angkor Intl

Sat 1/23

10:25 pm-3:40 pm

2 stops53h 15m

$1,367

Washington, D.C.Siem Reap

IAD Washington, D.C. Dulles Intl - SAI Siem Reap–Angkor Intl

IADSAI

Washington, D.C. Dulles Intl

Sat 1/16

1:30 pm-9:15 am

2 stops31h 45m

Siem Reap–Angkor Intl

Sun 1/24

7:25 pm-7:25 pm

2 stops36h 00m

$1,370

Washington, D.C.Siem Reap

IAD Washington, D.C. Dulles Intl - SAI Siem Reap–Angkor Intl

IADSAI

Washington, D.C. Dulles Intl

Mon 1/11

6:00 pm-9:55 am

2 stops51h 55m

Siem Reap–Angkor Intl

Wed 1/20

7:25 pm-3:35 pm

2 stops32h 10m

$1,372

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Washington, D.C. 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

How long does it take to fly to Siem Reap?

On average, it takes 31h 26m to fly from Washington, D.C. to Siem Reap if you fly out of Baltimore (the most popular airport in Washington, D.C.) and into Siem Reap (the most popular airport in Siem Reap). If you’re flying out of Washington, D.C. and into Siem Reap, then the flight time is around 32h 30m.

When to book flights from Washington, D.C. to Siem Reap

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. to Siem Reap according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. to Siem Reap (WAS to SAI) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Siem Reap

Best Price Found

$454

Fastest flight time

28h 35m

Direct flights

None
The best one-way flight to Siem Reap from Washington, D.C. in the past 72 hours is $454. The best round-trip flight deal from Washington, D.C. to Siem Reap found on momondo in the last 72 hours is $1,063.
The fastest flight from Washington, D.C. to Siem Reap takes 28h 35m
There are no direct flights from Washington, D.C. to Siem Reap. There are no popular flight routes from Washington, D.C. to Siem Reap.
Search flight deals

Frequently asked questions about flying from Washington, D.C. to Siem Reap

  • How far is Washington, D.C. to Siem Reap–Angkor Intl by plane?

    The straight-line distance from Washington, D.C. to Siem Reap–Angkor Intl is 8819.1 mi. By plane, this route typically takes 28h 35m.

  • When did momondo last update prices for flights from Washington, D.C. to Siem Reap–Angkor Intl Airport?

    Prices for flights from Washington, D.C. to Siem Reap–Angkor Intl Airport were last updated today.

  • How old do you have to be to fly from Washington, D.C. 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 Washington, D.C. to Siem Reap–Angkor Intl Airport.

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

    The necessary travel and health documents for your Siem Reap–Angkor Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Siem Reap?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington, D.C. to Siem Reap for you.

Can I find flights from Washington, D.C. to Siem Reap with flexible booking policies on momondo?

Flights from Washington, D.C. to Siem Reap with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Washington, D.C. to Siem Reap?

momondo provides multiple filters to help you find the best flight to Siem Reap from Washington, D.C.. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Washington, D.C. to Siem Reap right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Siem Reap, momondo offers a useful price alert feature which will track prices for flights to Siem Reap from Washington, D.C. and alert you when they change.

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