How does KAYAK find such low prices on flights from Washington, D.C. to Siem Reap?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington, D.C. to Siem Reap. Visit our flight page for the latest deals!>/a>

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington, D.C. to Siem Reap?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Washington, D.C. to Siem Reap is likely to change within 7 days, so travelers know whether to wait or book now. Visit our flight page for the latest deals!>/a>

What is the Hacker Fare option on flights from Washington, D.C. to Siem Reap?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Washington, D.C. to Siem Reap with an airline and back with another airline. Visit our flight page for the latest deals!>/a>

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington, D.C. to Siem Reap?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Washington, D.C. to Siem Reap up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. Visit our flight page for the latest deals!>/a>

$623 CHEAP FLIGHTS from Washington, D.C. to Siem Reap

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Flight Deals

Book Cheap Washington, D.C. to Siem Reap Plane Tickets

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Recent round-trip flight deals from Washington, D.C. to Siem Reap

Wed, Oct 7 - Thu, Nov 12

8:20 pm - 6:55 pm

IAD

SAI

35h 35m

2 stops

4:45 pm - 4:45 pm

SAI

IAD

36h 00m

2 stops

$1,283SWISS

Thu, Oct 22 - Fri, Nov 20

9:00 pm - 12:15 pm

IAD

SAI

28h 15m

2 stops

7:25 pm - 3:55 pm

SAI

IAD

32h 30m

2 stops

$1,342Multiple Airlines

Sat, Oct 17 - Sat, Oct 24

1:15 am - 6:55 pm

IAD

SAI

30h 40m

2 stops

9:40 am - 10:00 pm

SAI

IAD

23h 20m

2 stops

$1,431Multiple Airlines

Wed, Oct 7 - Thu, Nov 12

10:20 pm - 6:55 pm

IAD

SAI

33h 35m

3 stops

1:20 pm - 2:10 pm

SAI

IAD

36h 50m

2 stops

$1,456Multiple Airlines

Sat, Dec 12 - Wed, Dec 30

6:00 pm - 9:50 am

IAD

SAI

51h 50m

2 stops

4:45 pm - 8:05 pm

SAI

IAD

39h 20m

2 stops

$1,691Lufthansa

Wed, Oct 7 - Thu, Nov 12

7:30 pm - 9:30 pm

DCA

SAI

63h 00m

3 stops

11:50 pm - 8:43 pm

SAI

DCA

32h 53m

3 stops

$2,010Emirates

Sun, Oct 18 - Sat, Oct 24

9:09 am - 9:30 pm

BWI

SAI

49h 21m

3 stops

11:50 pm - 10:34 am

SAI

BWI

45h 44m

3 stops

$2,269Emirates

Sun, Oct 18 - Sat, Oct 24

2:40 pm - 9:30 pm

DCA

SAI

43h 50m

3 stops

11:50 pm - 10:26 pm

SAI

DCA

33h 36m

3 stops

$3,716Emirates

Sun, Jul 5 - Sat, Jul 11

9:59 am - 9:40 am

DCA

SAI

36h 41m

2 stops

10:30 am - 5:59 pm

SAI

DCA

42h 29m

2 stops

$12,417Singapore Airlines

Sun, Jul 5 - Sat, Jul 11

9:59 am - 9:40 am

DCA

SAI

36h 41m

3 stops

10:30 am - 5:59 pm

SAI

DCA

42h 29m

2 stops

$12,429Singapore Airlines

Booking Insights

KAYAK's insights & trends for Washington, D.C. to Siem Reap flights

Get data-powered insights and trends into flights from Washington, D.C. to Siem Reap to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Washington, D.C. to Siem Reap?

In the past 5 days, the cheapest round-trip tickets from Washington, D.C. to Siem Reap were found on Lufthansa ($1,691) and Emirates ($1,904).

Find deals

How does KAYAK find such low prices on flights from Washington, D.C. to Siem Reap?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington, D.C. to Siem Reap.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington, D.C. to Siem Reap?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Washington, D.C. to Siem Reap is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Washington, D.C. to Siem Reap?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Washington, D.C. to Siem Reap with an airline and back with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington, D.C. to Siem Reap?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Washington, D.C. to Siem Reap up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.