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.

$804 Cheap Flights from Washington, D.C. to Siem Reap in 2026

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

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Enter your travel dates to find the best prices.

9:00 pm - 4:10 pm

IAD

SAI

32h 10m

2 stops

11:45 am - 9:20 am

SAI

IAD

32h 35m

2 stops

$1,369Multiple Airlines

Thu, Oct 1 - Sat, Oct 31

3:10 pm - 11:15 am

IAD

SAI

33h 05m

2 stops

9:45 am - 9:45 am

SAI

IAD

35h 00m

2 stops

$1,426Multiple Airlines

Wed, May 13 - Fri, May 29

9:45 pm - 6:55 pm

IAD

SAI

34h 10m

2 stops

12:55 pm - 11:35 am

SAI

IAD

33h 40m

2 stops

$1,435Multiple Airlines

Thu, Oct 1 - Tue, Oct 6

1:15 am - 6:55 pm

IAD

SAI

30h 40m

2 stops

9:40 am - 7:28 am

SAI

IAD

32h 48m

3 stops

$1,458Multiple Airlines

Wed, Sep 30 - Tue, Oct 6

10:55 am - 12:15 pm

IAD

SAI

38h 20m

2 stops

11:50 pm - 8:40 am

SAI

IAD

43h 50m

2 stops

$1,591Emirates

Fri, Aug 7 - Sat, Aug 15

9:30 am - 9:40 am

DCA

SAI

37h 10m

3 stops

10:30 am - 8:00 pm

SAI

DCA

44h 30m

2 stops

$1,603Singapore Airlines

Thu, Oct 1 - Tue, Oct 6

2:53 pm - 9:30 pm

IAD

SAI

43h 37m

3 stops

11:50 pm - 8:40 am

SAI

IAD

43h 50m

2 stops

$1,708Emirates

Tue, Jul 14 - Sat, Aug 1

5:44 pm - 9:40 am

BWI

SAI

52h 56m

3 stops

10:30 am - 4:35 pm

SAI

BWI

41h 05m

2 stops

$2,029Singapore Airlines

Thu, Oct 1 - Tue, Oct 6

9:30 pm - 6:45 pm

BWI

SAI

34h 15m

2 stops

7:30 pm - 7:40 pm

SAI

BWI

35h 10m

2 stops

$2,679British Airways

Mon, Jul 13 - Sun, Jul 26

9:30 pm - 6:45 pm

BWI

SAI

34h 15m

2 stops

7:30 pm - 7:40 pm

SAI

BWI

35h 10m

2 stops

$2,789British Airways

Mon, Jul 13 - Fri, Jul 31

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

Our best Emirates deals on Washington, D.C. to Siem Reap flight tickets

Emirates

Aug 7

IAD10:55 amWashington, D.C. Dulles Intl

38h 20m

2 stops

SAI12:15 pmSiem Reap–Angkor Intl

Aug 15

SAI11:50 pmSiem Reap–Angkor Intl

43h 50m

2 stops

IAD8:40 amWashington, D.C. Dulles Intl

$1,591

Emirates

Jul 14

IAD2:53 pmWashington, D.C. Dulles Intl

43h 37m

3 stops

SAI9:30 pmSiem Reap–Angkor Intl

Aug 1

SAI11:50 pmSiem Reap–Angkor Intl

43h 50m

2 stops

IAD8:40 amWashington, D.C. Dulles Intl

$1,708

Emirates

Jul 14

IAD2:53 pmWashington, D.C. Dulles Intl

43h 37m

3 stops

SAI9:30 pmSiem Reap–Angkor Intl

Jul 28

SAI11:50 pmSiem Reap–Angkor Intl

43h 50m

2 stops

IAD8:40 amWashington, D.C. Dulles Intl

$1,709

Singapore Airlines flights from Washington, D.C. to Siem Reap

Our best Singapore Airlines deals on Washington, D.C. to Siem Reap flight tickets

Singapore Airlines

Oct 1

DCA9:30 amWashington, D.C. Reagan-National

37h 10m

3 stops

SAI9:40 amSiem Reap–Angkor Intl

Oct 6

SAI10:30 amSiem Reap–Angkor Intl

44h 30m

2 stops

DCA8:00 pmWashington, D.C. Reagan-National

$1,603

Singapore Airlines

Oct 1

BWI5:44 pmBaltimore/Washington

52h 56m

3 stops

SAI9:40 amSiem Reap–Angkor Intl

Oct 6

SAI10:30 amSiem Reap–Angkor Intl

41h 05m

2 stops

BWI4:35 pmBaltimore/Washington

$2,029

Singapore Airlines

Jul 16

DCA9:59 amWashington, D.C. Reagan-National

36h 41m

3 stops

SAI9:40 amSiem Reap–Angkor Intl

Jul 29

SAI10:30 amSiem Reap–Angkor Intl

46h 29m

2 stops

DCA9:59 pmWashington, D.C. Reagan-National

$2,352

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Siem Reap

IAD - SAI

IADSAI

Washington, D.C. Dulles Intl

Thu 10/1

9:00 pm-4:10 pm

2 stops32h 10m

Siem Reap–Angkor Intl

Sat 10/31

11:45 am-9:20 am

2 stops32h 35m

$1,369

Washington, D.C.Siem Reap

IAD - SAI

IADSAI

Washington, D.C. Dulles Intl

Wed 5/13

3:10 pm-11:15 am

2 stops33h 05m

Siem Reap–Angkor Intl

Fri 5/29

9:45 am-9:45 am

2 stops35h 00m

$1,426

Washington, D.C.Siem Reap

IAD - SAI

IADSAI

Washington, D.C. Dulles Intl

Thu 10/1

9:45 pm-6:55 pm

2 stops34h 10m

Siem Reap–Angkor Intl

Tue 10/6

12:55 pm-11:35 am

2 stops33h 40m

$1,435

Quickest round-trip

Washington, D.C.Siem Reap

IAD - SAI

IADSAI

Washington, D.C. Dulles Intl

Wed 9/30

1:15 am-6:55 pm

2 stops30h 40m

Siem Reap–Angkor Intl

Tue 10/6

9:40 am-7:28 am

3 stops32h 48m

$1,458

Washington, D.C.Siem Reap

IAD - SAI

IADSAI

Washington, D.C. Dulles Intl

Fri 8/7

10:55 am-12:15 pm

2 stops38h 20m

Siem Reap–Angkor Intl

Sat 8/15

11:50 pm-8:40 am

2 stops43h 50m

$1,591

Washington, D.C.Siem Reap

DCA - SAI

DCASAI

Washington, D.C. Reagan-National

Thu 10/1

9:30 am-9:40 am

3 stops37h 10m

Siem Reap–Angkor Intl

Tue 10/6

10:30 am-8:00 pm

2 stops44h 30m

$1,603

Washington, D.C.Siem Reap

IAD - SAI

IADSAI

Washington, D.C. Dulles Intl

Tue 7/14

2:53 pm-9:30 pm

3 stops43h 37m

Siem Reap–Angkor Intl

Sat 8/1

11:50 pm-8:40 am

2 stops43h 50m

$1,708

BaltimoreSiem Reap

BWI - SAI

BWISAI

Baltimore/Washington

Thu 10/1

5:44 pm-9:40 am

3 stops52h 56m

Siem Reap–Angkor Intl

Tue 10/6

10:30 am-4:35 pm

2 stops41h 05m

$2,029

BaltimoreSiem Reap

BWI - SAI

BWISAI

Baltimore/Washington

Mon 7/13

9:30 pm-6:45 pm

2 stops34h 15m

Siem Reap–Angkor Intl

Sun 7/26

7:30 pm-7:40 pm

2 stops35h 10m

$2,679

BaltimoreSiem Reap

BWI - SAI

BWISAI

Baltimore/Washington

Mon 7/13

9:30 pm-6:45 pm

2 stops34h 15m

Siem Reap–Angkor Intl

Fri 7/31

7:30 pm-7:40 pm

2 stops35h 10m

$2,789

Flights are sorted by cheapest round-trip flights 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 32h 42m to fly from Washington, D.C. to Siem Reap if you fly out of Washington, D.C. (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 Baltimore and into Siem Reap, then the flight time is around 40h 20m.

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

Fastest flight time	28h 15m
Direct flights	None

The fastest flight from Washington, D.C. to Siem Reap takes 28h 15m

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 15m.
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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Cheap flights from Washington, D.C. to Siem Reap from $647

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to Siem Reap departing on 8/27. 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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Emirates flights from Washington, D.C. to Siem Reap

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How to get the cheapest flight ticket from Washington, D.C. to Siem Reap

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

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

Fastest flight time

Direct flights

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

Why use momondo?

An easier way to manage your Siem Reap trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Cambodia

Cabin classes currently available on flights to Siem Reap

List of cabin classes available on flights landing in Siem Reap. Availability may vary depending on flight origin and airline.

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