For a smooth departure from IAD, use the Aerotrain to quickly reach distant concourses, but allow extra time for security queues.
Round-trip from | $784 (Mytrip) |
---|---|
One-way from | $357 (Kiwi.com) |
Popular in | July |
Cheapest in | November |
Average price | $1,664 |
Good round-trip deal | $1,102 or less |
Good one-way deal | $548 or less |
Fly from
Fly to
Route
Depart
Return
Price
Washington, D.C.Incheon
IAD - ICN
IADICN
Washington, D.C. Dulles Intl
Thu 9/25
9:35 am-4:15 pm
1 stop17h 40m
Incheon Intl
Wed 10/22
6:00 pm-4:18 pm
1 stop35h 18m
Washington, D.C.Incheon
IAD - ICN
IADICN
Washington, D.C. Dulles Intl
Mon 9/22
5:22 pm-4:05 pm
2 stops33h 43m
Incheon Intl
Sat 11/22
6:55 pm-11:23 am
2 stops30h 28m
Washington, D.C.Incheon
IAD - ICN
IADICN
Washington, D.C. Dulles Intl
Mon 10/20
1:30 pm-5:40 pm
1 stop39h 10m
Incheon Intl
Mon 11/3
10:45 am-11:45 am
1 stop39h 00m
Washington, D.C.Incheon
IAD - ICN
IADICN
Washington, D.C. Dulles Intl
Wed 10/22
9:40 pm-5:40 pm
1 stop31h 00m
Incheon Intl
Sat 11/8
10:45 am-11:45 am
1 stop39h 00m
Washington, D.C.Incheon
IAD - ICN
IADICN
Washington, D.C. Dulles Intl
Sun 3/1
6:55 pm-11:20 am
2 stops26h 25m
Incheon Intl
Tue 3/31
12:35 pm-5:49 am
2 stops30h 14m
Washington, D.C.Incheon
IAD - ICN
IADICN
Washington, D.C. Dulles Intl
Wed 11/5
1:30 pm-9:05 am
1 stop29h 35m
Incheon Intl
Tue 11/25
12:10 am-11:45 am
1 stop25h 35m
Washington, D.C.Incheon
IAD - ICN
IADICN
Washington, D.C. Dulles Intl
Sun 12/7
9:10 pm-6:20 pm
1 stop31h 10m
Incheon Intl
Thu 12/18
12:10 am-11:45 am
1 stop25h 35m
Washington, D.C.Incheon
IAD - ICN
IADICN
Washington, D.C. Dulles Intl
Wed 10/22
5:37 pm-4:05 pm
2 stops33h 28m
Incheon Intl
Sat 11/8
6:55 pm-11:45 am
2 stops30h 50m
Washington, D.C.Incheon
IAD - ICN
IADICN
Washington, D.C. Dulles Intl
Sun 3/1
7:00 am-6:35 pm
1 stop21h 35m
Incheon Intl
Mon 3/30
6:20 pm-5:23 pm
2 stops36h 03m
Washington, D.C.Incheon
IAD - ICN
IADICN
Washington, D.C. Dulles Intl
Mon 3/2
1:30 pm-9:05 am
1 stop29h 35m
Incheon Intl
Sun 3/29
11:20 pm-7:45 pm
1 stop33h 25m
The best time to book flights from Washington, D.C. Dulles Intl Airport to Seoul is 26 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Currently, February is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Seoul (average of $990). Flying from Washington, D.C. Dulles Intl Airport to Seoul in December is currently the most expensive (average of $1,633). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Unlike at noon, when flights are generally more expensive, you can save up to 36% on flights from Washington, D.C. Dulles Intl Airport to Seoul by exploring options for tickets in the evening.
Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Seoul flight should consider departing on Tuesday evenings when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
The most flights from IAD to SEL are scheduled on a Monday (2 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (2 on average).
Istanbul (IST) – chosen by Cheapflights users on 83% of 1-stop itineraries from Washington, D.C. Dulles Intl Airport to Seoul on Cheapflights.
Istanbul (IST) is the most affordable 1-stop option, with an average round-trip price of $939.
Flights via Istanbul (IST) have the shortest average one-way travel time for 1-stop routes: 21h 40m.
Flights via Istanbul (IST) offer the fastest connection on this route, with an average layover time of 2h 46m.
Entertainment
Crew
Boarding
Comfort
Overall
Food
Reviews
Chris,Mar 2025
SEA - ICN
Entertainment
Crew
Boarding
Comfort
Overall
Food
Reviews
Chris,Mar 2025
SEA - ICN
Entertainment
Crew
Boarding
Comfort
Overall
Food
Reviews
Chris,Mar 2025
SEA - ICN
Entertainment
Crew
Boarding
Comfort
Overall
Food
Reviews
Chris,Mar 2025
SEA - ICN
Entertainment
Crew
Boarding
Comfort
Overall
Food
Reviews
Chris,Mar 2025
SEA - ICN
Entertainment
Crew
Boarding
Comfort
Overall
Food
Reviews
Chris,Mar 2025
SEA - ICN
Airline | Cheapest | Average | Flexibility | On-time |
---|---|---|---|---|
Cheapest$367 | Average$1,716 | FlexibilityNo cancel fee | On-time69% | |
Cheapest$591 | Average$747 | FlexibilityNo cancel fee | On-time67% | |
Cheapest$759 | Average$1,530 | FlexibilityNo cancel fee | On-time76% | |
Cheapest$800 | Average$993 | FlexibilityNo cancel fee | On-time77% | |
Cheapest$864 | Average$1,219 | FlexibilityNo cancel fee | On-time67% | |
Cheapest$876 | Average$1,263 | FlexibilityNo cancel fee | On-time71% | |
Cheapest$1,534 | Average$1,880 | FlexibilityNo cancel fee | On-time81% | |
Cheapest$1,575 | Average$1,974 | FlexibilityNo cancel fee | On-timeN/A |