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 35h 57m on average, while flying from Baltimore to Siem Reap is 40h 20m 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.

$944 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.

3:10 pm - 9:05 am

IAD

SAI

30h 55m

2 stops

7:45 pm - 9:45 am

SAI

IAD

49h 00m

2 stops

$1,687Etihad Airways

mié., may. 20 - jue., may. 28

9:00 pm - 12:20 pm

IAD

SAI

28h 20m

2 stops

9:45 am - 6:10 pm

SAI

IAD

43h 25m

2 stops

$1,729Multiple Airlines

mié., may. 20 - jue., may. 28

3:10 pm - 9:40 am

IAD

SAI

31h 30m

3 stops

1:05 pm - 6:10 pm

SAI

IAD

40h 05m

2 stops

$1,940Multiple Airlines

jue., may. 21 - jue., may. 28

10:55 am - 12:20 pm

IAD

SAI

38h 25m

2 stops

11:50 pm - 12:31 am

SAI

IAD

35h 41m

3 stops

$2,014Emirates

mié., may. 20 - jue., may. 28

10:55 am - 12:20 pm

IAD

SAI

38h 25m

2 stops

11:50 pm - 12:31 am

SAI

IAD

35h 41m

3 stops

$2,029Emirates

mié., may. 20 - jue., may. 28

3:10 pm - 9:40 am

IAD

SAI

31h 30m

3 stops

11:55 am - 11:35 am

SAI

IAD

34h 40m

3 stops

$2,154Multiple Airlines

jue., may. 21 - jue., may. 28

3:03 pm - 9:30 pm

BWI

SAI

43h 27m

3 stops

11:50 pm - 9:26 pm

SAI

BWI

32h 36m

3 stops

$2,444Emirates

jue., may. 21 - jue., may. 28

7:35 pm - 7:05 pm

BWI

SAI

36h 30m

3 stops

1:05 pm - 6:28 am

SAI

BWI

28h 23m

3 stops

$2,480Multiple Airlines

mié., may. 20 - jue., may. 28

6:20 am - 9:40 am

BWI

SAI

40h 20m

2 stops

10:30 am - 6:09 pm

SAI

BWI

42h 39m

2 stops

$3,004Singapore Airlines

mié., may. 20 - jue., may. 28

6:20 am - 9:40 am

BWI

SAI

40h 20m

2 stops

10:30 am - 6:09 pm

SAI

BWI

42h 39m

2 stops

$3,023Singapore Airlines

mié., may. 20 - jue., may. 28

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

May 20

IAD10:55 amWashington, D.C. Dulles Intl

38h 25m

2 stops

SAI12:20 pmSiem Reap–Angkor Intl

May 28

SAI11:50 pmSiem Reap–Angkor Intl

35h 41m

3 stops

IAD12:31 amWashington, D.C. Dulles Intl

$2,014

Emirates

May 20

IAD10:55 amWashington, D.C. Dulles Intl

38h 25m

2 stops

SAI12:20 pmSiem Reap–Angkor Intl

May 28

SAI11:50 pmSiem Reap–Angkor Intl

35h 41m

3 stops

IAD12:31 amWashington, D.C. Dulles Intl

$2,029

Emirates

May 21

BWI3:03 pmBaltimore/Washington

43h 27m

3 stops

SAI9:30 pmSiem Reap–Angkor Intl

May 28

SAI11:50 pmSiem Reap–Angkor Intl

32h 36m

3 stops

BWI9:26 pmBaltimore/Washington

$2,444

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

May 20

BWI6:20 amBaltimore/Washington

40h 20m

2 stops

SAI9:40 amSiem Reap–Angkor Intl

May 28

SAI10:30 amSiem Reap–Angkor Intl

42h 39m

2 stops

BWI6:09 pmBaltimore/Washington

$3,004

Singapore Airlines

May 20

BWI6:20 amBaltimore/Washington

40h 20m

2 stops

SAI9:40 amSiem Reap–Angkor Intl

May 28

SAI10:30 amSiem Reap–Angkor Intl

42h 39m

2 stops

BWI6:09 pmBaltimore/Washington

$3,023

Singapore Airlines

May 21

BWI7:23 pmBaltimore/Washington

51h 17m

3 stops

SAI9:40 amSiem Reap–Angkor Intl

May 28

SAI10:30 amSiem Reap–Angkor Intl

42h 39m

2 stops

BWI6:09 pmBaltimore/Washington

$3,441

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

mié. 5/20

3:10 pm-9:05 am

2 stops30h 55m

Siem Reap–Angkor Intl

jue. 5/28

7:45 pm-9:45 am

2 stops49h 00m

$1,687

Washington, D.C.Siem Reap

IAD - SAI

IADSAI

Washington, D.C. Dulles Intl

mié. 5/20

9:00 pm-12:20 pm

2 stops28h 20m

Siem Reap–Angkor Intl

jue. 5/28

9:45 am-6:10 pm

2 stops43h 25m

$1,729

Washington, D.C.Siem Reap

IAD - SAI

IADSAI

Washington, D.C. Dulles Intl

jue. 5/21

3:10 pm-9:40 am

3 stops31h 30m

Siem Reap–Angkor Intl

jue. 5/28

1:05 pm-6:10 pm

2 stops40h 05m

$1,940

Washington, D.C.Siem Reap

IAD - SAI

IADSAI

Washington, D.C. Dulles Intl

mié. 5/20

10:55 am-12:20 pm

2 stops38h 25m

Siem Reap–Angkor Intl

jue. 5/28

11:50 pm-12:31 am

3 stops35h 41m

$2,014

Washington, D.C.Siem Reap

IAD - SAI

IADSAI

Washington, D.C. Dulles Intl

mié. 5/20

10:55 am-12:20 pm

2 stops38h 25m

Siem Reap–Angkor Intl

jue. 5/28

11:50 pm-12:31 am

3 stops35h 41m

$2,029

Washington, D.C.Siem Reap

IAD - SAI

IADSAI

Washington, D.C. Dulles Intl

jue. 5/21

3:10 pm-9:40 am

3 stops31h 30m

Siem Reap–Angkor Intl

jue. 5/28

11:55 am-11:35 am

3 stops34h 40m

$2,154

BaltimoreSiem Reap

BWI - SAI

BWISAI

Baltimore/Washington

jue. 5/21

3:03 pm-9:30 pm

3 stops43h 27m

Siem Reap–Angkor Intl

jue. 5/28

11:50 pm-9:26 pm

3 stops32h 36m

$2,444

Quickest round-trip

BaltimoreSiem Reap

BWI - SAI

BWISAI

Baltimore/Washington

mié. 5/20

7:35 pm-7:05 pm

3 stops36h 30m

Siem Reap–Angkor Intl

jue. 5/28

1:05 pm-6:28 am

3 stops28h 23m

$2,480

BaltimoreSiem Reap

BWI - SAI

BWISAI

Baltimore/Washington

mié. 5/20

6:20 am-9:40 am

2 stops40h 20m

Siem Reap–Angkor Intl

jue. 5/28

10:30 am-6:09 pm

2 stops42h 39m

$3,004

BaltimoreSiem Reap

BWI - SAI

BWISAI

Baltimore/Washington

mié. 5/20

6:20 am-9:40 am

2 stops40h 20m

Siem Reap–Angkor Intl

jue. 5/28

10:30 am-6:09 pm

2 stops42h 39m

$3,023

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?

Qatar Airways 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	28h 20m
Direct flights	None

The fastest flight from Washington, D.C. to Region of Siem Reap takes 28h 20m

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.

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mié. 5/13

mié. 5/20

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Popular cities in Siem Reap

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Flights to Krong Preah Sihanoukfrom $1,312

Cheap flights from Washington, D.C. to Siem Reap from $944

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 6/2. 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 Region of Siem Reap

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

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

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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

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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