Latest deals
FAQs
Price Alerts

Cheap flights from District of Columbia to Siem Reap from $773

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from District of Columbia to Siem Reap departing on 5/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Find the cheapest flights from District of Columbia to Siem Reap

Cheap round-trip flights

Enter your travel dates to find the best prices.
Emirates Logo
10:55 am - 9:30 pm
IAD
-
SAI
47h 35m
2 stops
Emirates Logo
11:50 pm - 8:40 am
SAI
-
IAD
43h 50m
2 stops
$1,314Emirates
Tue, Jul 28 - Sat, Aug 1
Multiple Airlines Logo
9:00 pm - 6:55 pm
IAD
-
SAI
34h 55m
2 stops
Multiple Airlines Logo
1:20 pm - 3:55 pm
SAI
-
IAD
38h 35m
2 stops
$1,315Multiple Airlines
Thu, Oct 1 - Fri, Nov 13
Emirates Logo
10:55 am - 9:30 pm
IAD
-
SAI
47h 35m
2 stops
Emirates Logo
11:50 pm - 8:40 am
SAI
-
IAD
43h 50m
2 stops
$1,330Emirates
Tue, Jul 28 - Tue, Aug 4
Emirates Logo
10:55 am - 9:30 pm
IAD
-
SAI
47h 35m
2 stops
Emirates Logo
11:50 pm - 8:40 am
SAI
-
IAD
43h 50m
2 stops
$1,380Emirates
Tue, Jul 28 - Thu, Aug 6
Emirates Logo
10:55 am - 9:30 pm
IAD
-
SAI
47h 35m
2 stops
Emirates Logo
12:55 pm - 8:40 am
SAI
-
IAD
30h 45m
2 stops
$1,394Emirates
Tue, Jul 28 - Mon, Aug 3
Multiple Airlines Logo
9:00 pm - 9:00 am
IAD
-
SAI
25h 00m
2 stops
Multiple Airlines Logo
7:10 pm - 8:20 am
SAI
-
IAD
49h 10m
3 stops
$1,406Multiple Airlines
Thu, Oct 1 - Fri, Nov 13
Multiple Airlines Logo
9:00 pm - 9:00 am
IAD
-
SAI
49h 00m
3 stops
Multiple Airlines Logo
7:10 pm - 8:20 am
SAI
-
IAD
49h 10m
3 stops
$1,422Multiple Airlines
Thu, Oct 1 - Fri, Nov 13
Etihad Airways Logo
3:10 pm - 9:00 am
IAD
-
SAI
30h 50m
2 stops
Etihad Airways Logo
12:55 pm - 9:45 am
SAI
-
IAD
31h 50m
2 stops
$1,462Etihad Airways
Sat, Jul 25 - Mon, Aug 3
Singapore Airlines Logo
9:59 am - 9:40 am
DCA
-
SAI
36h 41m
2 stops
Singapore Airlines Logo
4:00 pm - 8:00 pm
SAI
-
DCA
39h 00m
2 stops
$2,172Singapore Airlines
Wed, Jul 1 - Fri, Jul 10
Singapore Airlines Logo
9:59 am - 9:40 am
DCA
-
SAI
36h 41m
3 stops
Singapore Airlines Logo
10:30 am - 8:00 pm
SAI
-
DCA
44h 30m
2 stops
$2,463Singapore Airlines
Wed, Jul 1 - Fri, Jul 10

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Emirates flights from District of Columbia to Siem Reap

Our best Emirates deals on District of Columbia to Siem Reap flight tickets
Emirates
Jul 28
IAD10:55 amWashington, D.C. Dulles Intl
47h 35m
2 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
$1,314
Emirates
Jul 28
IAD10:55 amWashington, D.C. Dulles Intl
47h 35m
2 stops
SAI9:30 pmSiem Reap–Angkor Intl
Aug 4
SAI11:50 pmSiem Reap–Angkor Intl
43h 50m
2 stops
IAD8:40 amWashington, D.C. Dulles Intl
$1,330
Emirates
Jul 28
IAD10:55 amWashington, D.C. Dulles Intl
47h 35m
2 stops
SAI9:30 pmSiem Reap–Angkor Intl
Aug 6
SAI11:50 pmSiem Reap–Angkor Intl
43h 50m
2 stops
IAD8:40 amWashington, D.C. Dulles Intl
$1,380

Etihad Airways flights from District of Columbia to Siem Reap

Our best Etihad Airways deals on District of Columbia to Siem Reap flight tickets
Etihad Airways
Jul 25
IAD3:10 pmWashington, D.C. Dulles Intl
30h 50m
2 stops
SAI9:00 amSiem Reap–Angkor Intl
Aug 3
SAI12:55 pmSiem Reap–Angkor Intl
31h 50m
2 stops
IAD9:45 amWashington, D.C. Dulles Intl
$1,462
Etihad Airways
Jul 25
IAD3:10 pmWashington, D.C. Dulles Intl
30h 50m
2 stops
SAI9:00 amSiem Reap–Angkor Intl
Aug 6
SAI9:40 amSiem Reap–Angkor Intl
35h 05m
2 stops
IAD9:45 amWashington, D.C. Dulles Intl
$1,526
Etihad Airways
Jul 25
IAD3:10 pmWashington, D.C. Dulles Intl
30h 50m
2 stops
SAI9:00 amSiem Reap–Angkor Intl
Aug 5
SAI9:40 amSiem Reap–Angkor Intl
35h 05m
2 stops
IAD9:45 amWashington, D.C. Dulles Intl
$1,527

momondo Fare Finder

 
Customize your flight search to find flights from District of Columbia 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 18, 2026.
Use the filters below to find and compare flights from District of Columbia 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

Tue 7/28

10:55 am-9:30 pm

2 stops47h 35m

Siem Reap–Angkor Intl

Sat 8/1

11:50 pm-8:40 am

2 stops43h 50m

$1,314

Washington, D.C.Siem Reap

IAD - SAI

IADSAI

Washington, D.C. Dulles Intl

Thu 10/1

9:00 pm-6:55 pm

2 stops34h 55m

Siem Reap–Angkor Intl

Fri 11/13

1:20 pm-3:55 pm

2 stops38h 35m

$1,315

Washington, D.C.Siem Reap

IAD - SAI

IADSAI

Washington, D.C. Dulles Intl

Tue 7/28

10:55 am-9:30 pm

2 stops47h 35m

Siem Reap–Angkor Intl

Tue 8/4

11:50 pm-8:40 am

2 stops43h 50m

$1,330

Washington, D.C.Siem Reap

IAD - SAI

IADSAI

Washington, D.C. Dulles Intl

Tue 7/28

10:55 am-9:30 pm

2 stops47h 35m

Siem Reap–Angkor Intl

Thu 8/6

11:50 pm-8:40 am

2 stops43h 50m

$1,380

Washington, D.C.Siem Reap

IAD - SAI

IADSAI

Washington, D.C. Dulles Intl

Tue 7/28

10:55 am-9:30 pm

2 stops47h 35m

Siem Reap–Angkor Intl

Mon 8/3

12:55 pm-8:40 am

2 stops30h 45m

$1,394

Washington, D.C.Siem Reap

IAD - SAI

IADSAI

Washington, D.C. Dulles Intl

Thu 10/1

9:00 pm-9:00 am

2 stops25h 00m

Siem Reap–Angkor Intl

Fri 11/13

7:10 pm-8:20 am

3 stops49h 10m

$1,406

Washington, D.C.Siem Reap

IAD - SAI

IADSAI

Washington, D.C. Dulles Intl

Thu 10/1

9:00 pm-9:00 am

3 stops49h 00m

Siem Reap–Angkor Intl

Fri 11/13

7:10 pm-8:20 am

3 stops49h 10m

$1,422
Quickest round-trip

Washington, D.C.Siem Reap

IAD - SAI

IADSAI

Washington, D.C. Dulles Intl

Sat 7/25

3:10 pm-9:00 am

2 stops30h 50m

Siem Reap–Angkor Intl

Mon 8/3

12:55 pm-9:45 am

2 stops31h 50m

$1,462

Washington, D.C.Siem Reap

DCA - SAI

DCASAI

Washington, D.C. Reagan-National

Wed 7/1

9:59 am-9:40 am

2 stops36h 41m

Siem Reap–Angkor Intl

Fri 7/10

4:00 pm-8:00 pm

2 stops39h 00m

$2,172

Washington, D.C.Siem Reap

DCA - SAI

DCASAI

Washington, D.C. Reagan-National

Wed 7/1

9:59 am-9:40 am

3 stops36h 41m

Siem Reap–Angkor Intl

Fri 7/10

10:30 am-8:00 pm

2 stops44h 30m

$2,463

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted by cheapest first
1
2

Cheap District of Columbia to Siem Reap flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from District of Columbia to Siem Reap

Fastest flight time

25h 00m

Direct flights

None
The fastest flight from District of Columbia to Siem Reap takes 25h 00m
There are no direct flights from District of Columbia to Siem Reap. There are no popular flight routes from District of Columbia to Siem Reap.
Search flight deals

Frequently asked questions about flying from District of Columbia to Siem Reap

  • When did momondo last update prices for flights from District of Columbia to Siem Reap–Angkor Intl Airport?

    Prices for flights from District of Columbia to Siem Reap–Angkor Intl Airport are refreshed on a daily basis.

  • How old do you have to be to fly from District of Columbia 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 District of Columbia to Siem Reap–Angkor Intl Airport.

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

    The required travel and health documents for your Siem Reap–Angkor Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Siem Reap–Angkor Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Frequently asked questions about flying from District of Columbia to Siem Reap

  • How do I get Price Alerts for flights from District of Columbia to Siem Reap?

    You can take advantage of momondo’s Price Alerts by first searching for your flights to District of Columbia 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 District of Columbia to Siem Reap with momondo?

    Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.

  • How does momondo find its flight prices?

    We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

Why use momondo?

Why should I use momondo to find a flight deal from District of Columbia to Siem Reap?

Finding the right flight to Siem Reap from District of Columbia is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Siem Reap quick and easy, saving you time and money.

Can I find flights from District of Columbia to Siem Reap with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for District of Columbia to Siem Reap flights to just show those with flexible booking policies.

How can momondo help me find flights from District of Columbia to Siem Reap?

Once all potential District of Columbia to Siem Reap flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes. momondo can track prices for District of Columbia to Siem Reap flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Mon 5/18
Mon 5/25
By creating a price alert you accept our terms of use and privacy policy.

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.
First Class to Siem Reap
Business Class to Siem Reap