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Cheap flights from Washington, D.C. Dulles Intl Airport to Siem Reap from $661

1 adult
1 adult, Economy, 0 bags

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

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
10:00 pm - 4:55 pmIAD  Washington, D.C. Dulles Intl-SAI Siem Reap–Angkor Intl
30h 55m2 stops Beijing Capital Hanoi Noibai
Multiple Airlines Logo
8:30 pm - 6:30 pmSAI  Siem Reap–Angkor Intl-IAD Washington, D.C. Dulles Intl
34h 00m2 stops Hanoi Noibai Beijing Capital
$1,191Multiple Airlines
Tue, Nov 17 - Thu, Dec 17
Multiple Airlines 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
Multiple Airlines Logo
7:25 pm - 2:10 pmSAI  Siem Reap–Angkor Intl-IAD Washington, D.C. Dulles Intl
30h 45m2 stops Bangkok Suvarnabhumi Vienna Intl
$1,317Multiple Airlines
Tue, Jan 19 - Thu, Jan 28
Multiple Airlines Logo
2:25 pm - 12:05 pmIAD  Washington, D.C. Dulles Intl-SAI Siem Reap–Angkor Intl
33h 40m2 stops Abu Dhabi Zayed Intl Phnom Penh Techo Intl
Multiple Airlines Logo
11:50 am - 9:00 amSAI  Siem Reap–Angkor Intl-IAD Washington, D.C. Dulles Intl
33h 10m2 stops Bangkok Don Mueang Intl Abu Dhabi Zayed Intl
$1,394Multiple Airlines
Wed, Nov 4 - Sun, Nov 8
Multiple Airlines Logo
8:05 pm - 4:10 pmIAD  Washington, D.C. Dulles Intl-SAI Siem Reap–Angkor Intl
32h 05m3 stops Doha Hamad Intl Hanoi Noibai Luang Prabang
Multiple Airlines Logo
7:25 pm - 3:55 pmSAI  Siem Reap–Angkor Intl-IAD Washington, D.C. Dulles Intl
32h 30m2 stops Bangkok Suvarnabhumi Doha Hamad Intl
$1,430Multiple Airlines
Tue, Jan 19 - Thu, Jan 28
Multiple Airlines Logo
8:10 pm - 9:10 pmIAD  Washington, D.C. Dulles Intl-SAI Siem Reap–Angkor Intl
37h 00m3 stops Zurich Dubai Intl Bangkok Suvarnabhumi
Multiple Airlines Logo
7:25 pm - 8:05 pmSAI  Siem Reap–Angkor Intl-IAD Washington, D.C. Dulles Intl
36h 40m2 stops Bangkok Suvarnabhumi Munich Franz Josef Strauss
$1,465Multiple Airlines
Tue, Nov 17 - Thu, Dec 17
Multiple Airlines Logo
2:25 pm - 11:05 amIAD  Washington, D.C. Dulles Intl-SAI Siem Reap–Angkor Intl
32h 40m3 stops Abu Dhabi Zayed Intl Chennai Bangkok Don Mueang Intl
Multiple Airlines Logo
11:50 am - 9:00 amSAI  Siem Reap–Angkor Intl-IAD Washington, D.C. Dulles Intl
33h 10m2 stops Bangkok Don Mueang Intl Abu Dhabi Zayed Intl
$1,515Multiple Airlines
Wed, Nov 4 - Sun, Nov 8
Multiple Airlines Logo
2:25 pm - 8:00 amIAD  Washington, D.C. Dulles Intl-SAI Siem Reap–Angkor Intl
29h 35m3 stops Abu Dhabi Zayed Intl Chennai Kolkata Netaji S. Chandra
Multiple Airlines Logo
11:50 am - 9:00 amSAI  Siem Reap–Angkor Intl-IAD Washington, D.C. Dulles Intl
33h 10m3 stops Bangkok Don Mueang Intl Chiang Mai Abu Dhabi Zayed Intl
$1,575Multiple Airlines
Tue, Nov 17 - Thu, Dec 17
Multiple Airlines Logo
2:25 pm - 11:05 amIAD  Washington, D.C. Dulles Intl-SAI Siem Reap–Angkor Intl
32h 40m3 stops Abu Dhabi Zayed Intl Chennai Bangkok Don Mueang Intl
Multiple Airlines Logo
3:35 pm - 11:43 pmSAI  Siem Reap–Angkor Intl-IAD Washington, D.C. Dulles Intl
44h 08m3 stops Bangkok Suvarnabhumi Abu Dhabi Zayed Intl Atlanta Hartsfield-Jackson
$1,653Multiple Airlines
Wed, Nov 4 - Sun, Nov 8
Multiple Airlines Logo
8:05 pm - 4:10 pmIAD  Washington, D.C. Dulles Intl-SAI Siem Reap–Angkor Intl
32h 05m3 stops Doha Hamad Intl Hanoi Noibai Luang Prabang
Multiple Airlines Logo
5:05 pm - 8:55 pmSAI  Siem Reap–Angkor Intl-IAD Washington, D.C. Dulles Intl
39h 50m3 stops Luang Prabang Hanoi Noibai Taipei City Taiwan Taoyuan Intl
$1,969Multiple Airlines
Tue, Jan 19 - Thu, Jan 28
Etihad Airways Logo
2:25 pm - 9:15 amIAD  Washington, D.C. Dulles Intl-SAI Siem Reap–Angkor Intl
30h 50m2 stops Abu Dhabi Zayed Intl Bangkok Suvarnabhumi
Etihad Airways Logo
7:25 pm - 9:00 amSAI  Siem Reap–Angkor Intl-IAD Washington, D.C. Dulles Intl
49h 35m2 stops Bangkok Suvarnabhumi Abu Dhabi Zayed Intl
$2,100Etihad Airways
Sun, Dec 27 - Sun, Jan 3

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Qatar Airways flights from Washington, D.C. Dulles Intl Airport to Siem Reap

Our best Qatar Airways deals on Washington, D.C. Dulles Intl Airport to Siem Reap flight tickets
Qatar Airways
Dec 22
IAD8:05 pmWashington, D.C. Dulles Intl
25h 10m
2 stops
SAI9:15 amSiem Reap–Angkor Intl
Jan 3
SAI7:25 pmSiem Reap–Angkor Intl
32h 30m
2 stops
IAD3:55 pmWashington, D.C. Dulles Intl
$3,365
Qatar Airways
Dec 21
IAD8:05 pmWashington, D.C. Dulles Intl
49h 10m
2 stops
SAI9:15 amSiem Reap–Angkor Intl
Jan 3
SAI9:55 amSiem Reap–Angkor Intl
66h 00m
2 stops
IAD3:55 pmWashington, D.C. Dulles Intl
$3,421
Qatar Airways
Dec 22
IAD8:05 pmWashington, D.C. Dulles Intl
25h 10m
2 stops
SAI9:15 amSiem Reap–Angkor Intl
Jan 1
SAI7:25 pmSiem Reap–Angkor Intl
32h 30m
2 stops
IAD3:55 pmWashington, D.C. Dulles Intl
$3,793

Lufthansa flights from Washington, D.C. Dulles Intl Airport to Siem Reap

Our best Lufthansa deals on Washington, D.C. Dulles Intl Airport to Siem Reap flight tickets
Lufthansa
Dec 23
IAD10:55 pmWashington, D.C. Dulles Intl
31h 50m
2 stops
SAI6:45 pmSiem Reap–Angkor Intl
Dec 30
SAI7:25 pmSiem Reap–Angkor Intl
32h 10m
2 stops
IAD3:35 pmWashington, D.C. Dulles Intl
$3,601
Lufthansa
Dec 23
IAD10:55 pmWashington, D.C. Dulles Intl
31h 50m
2 stops
SAI6:45 pmSiem Reap–Angkor Intl
Dec 31
SAI7:25 pmSiem Reap–Angkor Intl
36h 40m
2 stops
IAD8:05 pmWashington, D.C. Dulles Intl
$3,881
Lufthansa
Dec 22
IAD10:55 pmWashington, D.C. Dulles Intl
31h 50m
2 stops
SAI6:45 pmSiem Reap–Angkor Intl
Dec 30
SAI7:25 pmSiem Reap–Angkor Intl
32h 10m
2 stops
IAD3:35 pmWashington, D.C. Dulles Intl
$3,917

momondo Fare Finder

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

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Cheapest round-trip

Washington, D.C.Siem Reap

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

IADSAI

Washington, D.C. Dulles Intl

Tue 11/17

10:00 pm-4:55 pm

2 stops30h 55m

Siem Reap–Angkor Intl

Thu 12/17

8:30 pm-6:30 pm

2 stops34h 00m

$1,191

Washington, D.C.Siem Reap

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

IADSAI

Washington, D.C. Dulles Intl

Tue 1/19

5:35 pm-9:55 am

2 stops52h 20m

Siem Reap–Angkor Intl

Thu 1/28

7:25 pm-2:10 pm

2 stops30h 45m

$1,317

Washington, D.C.Siem Reap

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

IADSAI

Washington, D.C. Dulles Intl

Wed 11/4

2:25 pm-12:05 pm

2 stops33h 40m

Siem Reap–Angkor Intl

Sun 11/8

11:50 am-9:00 am

2 stops33h 10m

$1,394

Washington, D.C.Siem Reap

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

IADSAI

Washington, D.C. Dulles Intl

Tue 1/19

8:05 pm-4:10 pm

3 stops32h 05m

Siem Reap–Angkor Intl

Thu 1/28

7:25 pm-3:55 pm

2 stops32h 30m

$1,430

Washington, D.C.Siem Reap

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

IADSAI

Washington, D.C. Dulles Intl

Tue 11/17

8:10 pm-9:10 pm

3 stops37h 00m

Siem Reap–Angkor Intl

Thu 12/17

7:25 pm-8:05 pm

2 stops36h 40m

$1,465

Washington, D.C.Siem Reap

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

IADSAI

Washington, D.C. Dulles Intl

Wed 11/4

2:25 pm-11:05 am

3 stops32h 40m

Siem Reap–Angkor Intl

Sun 11/8

11:50 am-9:00 am

2 stops33h 10m

$1,515
Quickest round-trip

Washington, D.C.Siem Reap

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

IADSAI

Washington, D.C. Dulles Intl

Tue 11/17

2:25 pm-8:00 am

3 stops29h 35m

Siem Reap–Angkor Intl

Thu 12/17

11:50 am-9:00 am

3 stops33h 10m

$1,575

Washington, D.C.Siem Reap

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

IADSAI

Washington, D.C. Dulles Intl

Wed 11/4

2:25 pm-11:05 am

3 stops32h 40m

Siem Reap–Angkor Intl

Sun 11/8

3:35 pm-11:43 pm

3 stops44h 08m

$1,653

Washington, D.C.Siem Reap

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

IADSAI

Washington, D.C. Dulles Intl

Tue 1/19

8:05 pm-4:10 pm

3 stops32h 05m

Siem Reap–Angkor Intl

Thu 1/28

5:05 pm-8:55 pm

3 stops39h 50m

$1,969

Washington, D.C.Siem Reap

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

IADSAI

Washington, D.C. Dulles Intl

Sun 12/27

2:25 pm-9:15 am

2 stops30h 50m

Siem Reap–Angkor Intl

Sun 1/3

7:25 pm-9:00 am

2 stops49h 35m

$2,100

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 resultsSorted by cheapest first
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When to book flights from Washington, D.C. Dulles Intl Airport to Siem Reap

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport to Siem Reap (IAD to SAI) flight deals and tips

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

Best Price Found

$661

Fastest flight time

33h 35m

Direct flights

None
The best one-way flight to Siem Reap from Washington, D.C. Dulles Intl Airport in the past 72 hours is $661. The best round-trip flight deal from Washington, D.C. Dulles Intl Airport to Siem Reap found on momondo in the last 72 hours is $1,191.
The fastest flight from Washington, D.C. Dulles Intl Airport to Siem Reap takes 33h 35m
There are no direct flights from Washington, D.C. Dulles Intl Airport to Siem Reap. There are no popular flight routes from Washington, D.C. Dulles Intl Airport to Siem Reap.
Search flight deals

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

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

    The distance between Washington, D.C. Dulles Intl and Siem Reap–Angkor Intl is about 8815.7 mi. A reasonable flight in good conditions will take 33h 35m.

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

    Prices for flights from Washington, D.C. Dulles Intl Airport to Siem Reap–Angkor Intl Airport are updated daily.

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. Dulles Intl Airport 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 required for your trip to Siem Reap–Angkor Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Siem Reap–Angkor Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

  • How do I get Price Alerts for flights from Washington, D.C. Dulles Intl Airport to Siem Reap?

    You can take advantage of momondo’s Price Alerts by first searching for your flights to Washington, D.C. Dulles Intl Airport from Siem Reap. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

  • How can I save money on flights from Washington, D.C. Dulles Intl Airport to Siem Reap with momondo?

    Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Washington, D.C. to Siem Reap. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo allows you to filter the results for Washington, D.C. to Siem Reap flights to just show those with flexible booking policies.

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

momondo helps you find the best flight between Washington, D.C. and Siem Reap by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Price alerts on flights to Siem Reap from Washington, D.C. are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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