How long is the flight from Washington, D.C. to Region of Siem Reap?

Average flight duration from Washington, D.C. to Region of Siem Reap depends on which airport you fly into and out of. Flying from Washington, D.C. to Siem Reap is 33h 20m on average, while flying from Baltimore to Siem Reap is 33h 55m on average. Siem Reap is the most popular airport in Region of Siem Reap.

When did momondo last update prices for flights from Washington, D.C. to Siem Reap?

Prices for flights from Washington, D.C. to Siem Reap are refreshed on a daily basis.

How old do you have to be to fly from Washington, D.C. to Siem Reap?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, 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.

What documentation or ID do you need to fly to Siem Reap?

The required travel and health documents for your Siem Reap 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. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$1,068 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

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

2:35 pm - 10:55 am

IAD

SAI

32h 20m

2 stops

7:10 pm - 9:05 am

SAI

IAD

49h 55m

2 stops

$1,332Multiple Airlines

Sun, Nov 1 - Mon, Nov 30

6:00 pm - 3:55 pm

BWI

SAI

33h 55m

2 stops

4:45 pm - 6:21 am

SAI

BWI

49h 36m

2 stops

$1,438Multiple Airlines

Sun, Nov 1 - Mon, Nov 30

8:05 pm - 9:15 am

IAD

SAI

25h 10m

2 stops

10:25 pm - 8:20 am

SAI

IAD

45h 55m

3 stops

$1,670Multiple Airlines

Sun, Nov 1 - Mon, Nov 30

6:00 pm - 3:55 pm

BWI

SAI

33h 55m

2 stops

4:45 pm - 9:30 pm

SAI

BWI

40h 45m

3 stops

$1,917Singapore Airlines

Sun, Nov 1 - Mon, Nov 30

10:55 am - 9:30 pm

IAD

SAI

47h 35m

2 stops

11:50 pm - 8:40 am

SAI

IAD

43h 50m

2 stops

$2,033Emirates

Tue, Jun 23 - Tue, Jul 21

3:25 pm - 9:40 am

IAD

SAI

55h 15m

2 stops

4:00 pm - 4:05 pm

SAI

IAD

59h 05m

2 stops

$2,064Lufthansa

Tue, Jun 23 - Wed, Jul 22

10:55 am - 9:30 pm

IAD

SAI

47h 35m

2 stops

11:50 pm - 8:40 am

SAI

IAD

43h 50m

2 stops

$2,069Emirates

Tue, Jun 23 - Thu, Jul 23

6:00 pm - 9:50 am

BWI

SAI

51h 50m

3 stops

4:45 pm - 9:30 pm

SAI

BWI

40h 45m

3 stops

$2,340Singapore Airlines

Sun, Nov 1 - Mon, Nov 30

1:00 pm - 9:40 am

DCA

SAI

57h 40m

3 stops

10:30 am - 10:30 pm

SAI

DCA

47h 00m

2 stops

$2,411United Airlines

Tue, Jun 23 - Wed, Jul 22

7:55 am - 9:40 am

DCA

SAI

38h 45m

2 stops

10:30 am - 10:30 pm

SAI

DCA

47h 00m

2 stops

$2,637United Airlines

Wed, Jun 24 - Wed, Jul 22

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

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

Singapore Airlines

Nov 1

BWI6:00 pmBaltimore/Washington

33h 55m

2 stops

SAI3:55 pmSiem Reap–Angkor Intl

Nov 30

SAI4:45 pmSiem Reap–Angkor Intl

40h 45m

3 stops

BWI9:30 pmBaltimore/Washington

$1,917

Singapore Airlines

Nov 1

BWI6:00 pmBaltimore/Washington

51h 50m

3 stops

SAI9:50 amSiem Reap–Angkor Intl

Nov 30

SAI4:45 pmSiem Reap–Angkor Intl

40h 45m

3 stops

BWI9:30 pmBaltimore/Washington

$2,340

Singapore Airlines

Jul 2

BWI7:23 pmBaltimore/Washington

51h 17m

2 stops

SAI9:40 amSiem Reap–Angkor Intl

Jul 9

SAI10:30 amSiem Reap–Angkor Intl

42h 20m

2 stops

BWI5:50 pmBaltimore/Washington

$3,071

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

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

Emirates

Jun 23

IAD10:55 amWashington, D.C. Dulles Intl

47h 35m

2 stops

SAI9:30 pmSiem Reap–Angkor Intl

Jul 21

SAI11:50 pmSiem Reap–Angkor Intl

43h 50m

2 stops

IAD8:40 amWashington, D.C. Dulles Intl

$2,033

Emirates

Jun 23

IAD10:55 amWashington, D.C. Dulles Intl

47h 35m

2 stops

SAI9:30 pmSiem Reap–Angkor Intl

Jul 23

SAI11:50 pmSiem Reap–Angkor Intl

43h 50m

2 stops

IAD8:40 amWashington, D.C. Dulles Intl

$2,069

Emirates

Jun 23

IAD10:55 amWashington, D.C. Dulles Intl

47h 35m

2 stops

SAI9:30 pmSiem Reap–Angkor Intl

Jul 25

SAI11:50 pmSiem Reap–Angkor Intl

43h 50m

2 stops

IAD8:40 amWashington, D.C. Dulles Intl

$2,083

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

Sun 11/1

2:35 pm-10:55 am

2 stops32h 20m

Siem Reap–Angkor Intl

Mon 11/30

7:10 pm-9:05 am

2 stops49h 55m

$1,332

BaltimoreSiem Reap

BWI - SAI

BWISAI

Baltimore/Washington

Sun 11/1

6:00 pm-3:55 pm

2 stops33h 55m

Siem Reap–Angkor Intl

Mon 11/30

4:45 pm-6:21 am

2 stops49h 36m

$1,438

Quickest round-trip

Washington, D.C.Siem Reap

IAD - SAI

IADSAI

Washington, D.C. Dulles Intl

Sun 11/1

8:05 pm-9:15 am

2 stops25h 10m

Siem Reap–Angkor Intl

Mon 11/30

10:25 pm-8:20 am

3 stops45h 55m

$1,670

BaltimoreSiem Reap

BWI - SAI

BWISAI

Baltimore/Washington

Sun 11/1

6:00 pm-3:55 pm

2 stops33h 55m

Siem Reap–Angkor Intl

Mon 11/30

4:45 pm-9:30 pm

3 stops40h 45m

$1,917

Washington, D.C.Siem Reap

IAD - SAI

IADSAI

Washington, D.C. Dulles Intl

Tue 6/23

10:55 am-9:30 pm

2 stops47h 35m

Siem Reap–Angkor Intl

Tue 7/21

11:50 pm-8:40 am

2 stops43h 50m

$2,033

Washington, D.C.Siem Reap

IAD - SAI

IADSAI

Washington, D.C. Dulles Intl

Tue 6/23

3:25 pm-9:40 am

2 stops55h 15m

Siem Reap–Angkor Intl

Wed 7/22

4:00 pm-4:05 pm

2 stops59h 05m

$2,064

Washington, D.C.Siem Reap

IAD - SAI

IADSAI

Washington, D.C. Dulles Intl

Tue 6/23

10:55 am-9:30 pm

2 stops47h 35m

Siem Reap–Angkor Intl

Thu 7/23

11:50 pm-8:40 am

2 stops43h 50m

$2,069

BaltimoreSiem Reap

BWI - SAI

BWISAI

Baltimore/Washington

Sun 11/1

6:00 pm-9:50 am

3 stops51h 50m

Siem Reap–Angkor Intl

Mon 11/30

4:45 pm-9:30 pm

3 stops40h 45m

$2,340

Washington, D.C.Siem Reap

DCA - SAI

DCASAI

Washington, D.C. Reagan-National

Tue 6/23

1:00 pm-9:40 am

3 stops57h 40m

Siem Reap–Angkor Intl

Wed 7/22

10:30 am-10:30 pm

2 stops47h 00m

$2,411

Washington, D.C.Siem Reap

DCA - SAI

DCASAI

Washington, D.C. Reagan-National

Wed 6/24

7:55 am-9:40 am

2 stops38h 45m

Siem Reap–Angkor Intl

Wed 7/22

10:30 am-10:30 pm

2 stops47h 00m

$2,637

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first

How to get the cheapest flight ticket from Washington, D.C. to Region of 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

Airlines

Other information

What is the cheapest airline that flies from Washington, D.C. to Siem Reap?

United Airlines is the most popular carrier operating from Washington, D.C. to Siem Reap

Cheap Washington, D.C. to Region of Siem Reap flight deals and tips

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

Fastest flight time	24h 15m
Direct flights	None

The fastest flight from Washington, D.C. to Region of Siem Reap takes 24h 15m

There are no direct flights from Washington, D.C. to Region of Siem Reap. There are no popular flight routes from Washington, D.C. to Region of Siem Reap.

Search flight deals

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

When did momondo last update prices for flights from Washington, D.C. to Siem Reap?
Prices for flights from Washington, D.C. to Siem Reap are refreshed on a daily basis.
How old do you have to be to fly from Washington, D.C. to Siem Reap?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, 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.
What documentation or ID do you need to fly to Siem Reap?
The required travel and health documents for your Siem Reap 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. We recommend that you seek guidance from your airline or a reliable 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?

It is quick and easy to find Washington, D.C. to Siem Reap flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Siem Reap that suits you.

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

Yes. momondo enables you to select and highlight flights to Siem Reap from Washington, D.C. with this policy.

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.

An easier way to manage your Region of Siem Reap trip

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Complete your trip

Feeling lucky

Popular cities in Siem Reap

Flights to Phnom Penhfrom $1,020

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Flights to Krong Preah Sihanoukfrom $1,312

Cheap flights from Washington, D.C. to Siem Reap from $1,068

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 6/29. 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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Filter for what you want

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

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

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

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

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See travel insights to Siem Reap from

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

What is the cheapest airline that flies from Washington, D.C. to Siem Reap?

How long is the flight from Washington, D.C. to Region of Siem Reap?

Cheap Washington, D.C. to Region of Siem Reap flight deals and tips

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

Popular cities in Siem Reap

Popular flights according to clicks in the last 7 days on momondo

Washington, D.C. flight routes

According to popular flight searches on momondo this year

Region of Siem Reap flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to Siem Reap

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

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.

Complete your trip to Siem Reap

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According to popular flight searches on momondo this year