
Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Siem Reap (SAI). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 7, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,063 (Trip.com) |
One-way from | $454 (Kiwi.com) |
Fly from
Fly to
Route
Depart
Return
Washington, D.C.Siem Reap
IAD Washington, D.C. Dulles Intl - SAI Siem Reap–Angkor Intl
IADSAI
Washington, D.C. Dulles Intl
Wed 1/27
11:35 pm-11:45 am
2 stops48h 10m
Siem Reap–Angkor Intl
Wed 12/31
12:00 am-12:00 pm
Nonstop0h 00m
Washington, D.C.Siem Reap
IAD Washington, D.C. Dulles Intl - SAI Siem Reap–Angkor Intl
IADSAI
Washington, D.C. Dulles Intl
Fri 1/22
11:35 pm-8:45 am
2 stops45h 10m
Siem Reap–Angkor Intl
Wed 12/31
12:00 am-12:00 pm
Nonstop0h 00m
Washington, D.C.Siem Reap
IAD Washington, D.C. Dulles Intl - SAI Siem Reap–Angkor Intl
IADSAI
Washington, D.C. Dulles Intl
Fri 11/20
8:05 pm-4:05 pm
3 stops32h 00m
Siem Reap–Angkor Intl
Wed 12/31
12:00 am-12:00 pm
Nonstop0h 00m
Washington, D.C.Siem Reap
IAD Washington, D.C. Dulles Intl - SAI Siem Reap–Angkor Intl
IADSAI
Washington, D.C. Dulles Intl
Tue 2/2
2:25 pm-11:45 am
2 stops33h 20m
Siem Reap–Angkor Intl
Tue 2/9
4:50 pm-9:00 am
2 stops28h 10m
Washington, D.C.Siem Reap
IAD Washington, D.C. Dulles Intl - SAI Siem Reap–Angkor Intl
IADSAI
Washington, D.C. Dulles Intl
Sat 1/16
1:30 pm-9:15 am
2 stops31h 45m
Siem Reap–Angkor Intl
Sun 1/24
7:25 pm-7:25 pm
2 stops36h 00m
Washington, D.C.Siem Reap
IAD Washington, D.C. Dulles Intl - SAI Siem Reap–Angkor Intl
IADSAI
Washington, D.C. Dulles Intl
Tue 12/1
9:20 pm-12:40 pm
2 stops51h 20m
Siem Reap–Angkor Intl
Tue 12/8
7:25 pm-7:25 pm
2 stops36h 00m
Washington, D.C.Siem Reap
IAD Washington, D.C. Dulles Intl - SAI Siem Reap–Angkor Intl
IADSAI
Washington, D.C. Dulles Intl
Mon 1/4
6:00 pm-9:55 am
2 stops51h 55m
Siem Reap–Angkor Intl
Fri 1/22
9:55 am-2:10 pm
2 stops40h 15m
Washington, D.C.Siem Reap
IAD Washington, D.C. Dulles Intl - SAI Siem Reap–Angkor Intl
IADSAI
Washington, D.C. Dulles Intl
Sun 12/27
2:25 pm-9:15 am
2 stops30h 50m
Siem Reap–Angkor Intl
Sun 1/3
7:25 pm-9:00 am
2 stops49h 35m
Washington, D.C.Siem Reap
IAD Washington, D.C. Dulles Intl - SAI Siem Reap–Angkor Intl
IADSAI
Washington, D.C. Dulles Intl
Tue 2/2
12:50 pm-9:10 pm
3 stops44h 20m
Siem Reap–Angkor Intl
Tue 2/9
11:50 pm-9:18 pm
3 stops33h 28m
Washington, D.C.Siem Reap
IAD Washington, D.C. Dulles Intl - SAI Siem Reap–Angkor Intl
IADSAI
Washington, D.C. Dulles Intl
Sun 12/27
12:42 pm-9:15 am
3 stops32h 33m
Siem Reap–Angkor Intl
Sun 1/3
7:05 pm-11:45 am
2 stops28h 40m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
Find useful and relevant information for your journey from Dulles Intl to Siem Reap. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.