For afternoon departures, expect crowded check-in areas at IAD. Arrive early to navigate the busy terminals efficiently.
Round-trip from | $892 (CrystalTravel) |
---|---|
One-way from | $388 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $1,798 |
Good round-trip deal | $1,059 or less |
Good one-way deal | $530 or less |
Fly from
Fly to
Route
Depart
Return
Price
BaltimoreIncheon
BWI - ICN
BWIICN
Baltimore/Washington
Sat 9/13
6:41 am-3:30 pm
1 stop19h 49m
Incheon Intl
Fri 9/26
5:25 pm-12:42 pm
1 stop32h 17m
Washington, D.C.Incheon
DCA - ICN
DCAICN
Washington, D.C. Reagan-National
Tue 9/30
6:59 am-4:20 am
3 stops32h 21m
Incheon Intl
Fri 10/17
6:00 pm-10:20 am
1 stop29h 20m
Washington, D.C.Incheon
DCA - ICN
DCAICN
Washington, D.C. Reagan-National
Tue 1/6
4:10 pm-5:10 pm
2 stops35h 00m
Incheon Intl
Mon 1/12
6:55 pm-10:26 am
2 stops29h 31m
Washington, D.C.Incheon
DCA - ICN
DCAICN
Washington, D.C. Reagan-National
Tue 12/9
9:20 pm-5:10 pm
2 stops29h 50m
Incheon Intl
Fri 12/26
6:55 pm-3:31 pm
2 stops34h 36m
Washington, D.C.Seoul
IAD - GMP
IADGMP
Washington, D.C. Dulles Intl
Mon 9/15
12:08 pm-11:00 am
2 stops33h 52m
Seoul Gimpo Intl
Mon 9/22
8:50 pm-7:37 pm
2 stops35h 47m
Washington, D.C.Seoul
DCA - GMP
DCAGMP
Washington, D.C. Reagan-National
Mon 9/15
11:10 am-11:00 am
2 stops34h 50m
Seoul Gimpo Intl
Mon 9/22
8:50 pm-5:57 pm
2 stops34h 07m
BaltimoreSeoul
BWI - GMP
BWIGMP
Baltimore/Washington
Wed 9/10
6:41 am-9:50 pm
2 stops26h 09m
Seoul Gimpo Intl
Wed 9/17
7:55 am-11:22 pm
2 stops28h 27m
Washington, D.C.Incheon
DCA - ICN
DCAICN
Washington, D.C. Reagan-National
Tue 9/9
7:35 pm-2:05 pm
2 stops29h 30m
Incheon Intl
Thu 9/18
10:10 am-12:55 am
2 stops27h 45m
Washington, D.C.Incheon
IAD - ICN
IADICN
Washington, D.C. Dulles Intl
Mon 10/20
11:41 am-7:05 pm
2 stops42h 24m
Incheon Intl
Tue 11/18
3:00 pm-10:18 pm
2 stops45h 18m
Washington, D.C.Incheon
IAD - ICN
IADICN
Washington, D.C. Dulles Intl
Tue 10/28
5:37 pm-6:35 pm
2 stops35h 58m
Incheon Intl
Thu 11/6
10:05 am-10:18 pm
2 stops26h 13m
To ensure you get the cheapest price possible for a flight from Washington, D.C. to Seoul, you should look to book at least 18 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
Currently, February is the cheapest month in which you can book a flight from Washington, D.C. to Seoul (average of $994). Flying from Washington, D.C. to Seoul in December is currently the most expensive (average of $1,635). 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.
When flying from Washington, D.C. to Seoul, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 31% versus a flight in the afternoon.
Travelers seeking maximum savings on their Washington, D.C. to Seoul flight should consider departing on Monday 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 WAS 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).
Toronto (YYZ) – chosen by Cheapflights users on 50% of 1-stop itineraries from Washington, D.C. to Seoul on Cheapflights.
Toronto (YYZ) is the most affordable 1-stop option, with an average round-trip price of $875.
Flights via Toronto (YYZ) have the shortest average one-way travel time for 1-stop routes: 17h 45m.
Flights via Toronto (YYZ) offer the fastest connection on this route, with an average layover time of 1h 21m.
Boarding
Comfort
Entertainment
Food
Overall
Crew
Reviews
Chris,Mar 2025
SEA - ICN
Boarding
Comfort
Entertainment
Food
Overall
Crew
Reviews
Chris,Mar 2025
SEA - ICN
Boarding
Comfort
Entertainment
Food
Overall
Crew
Reviews
Chris,Mar 2025
SEA - ICN
Boarding
Comfort
Entertainment
Food
Overall
Crew
Reviews
Chris,Mar 2025
SEA - ICN
Boarding
Comfort
Entertainment
Food
Overall
Crew
Reviews
Chris,Mar 2025
SEA - ICN
Boarding
Comfort
Entertainment
Food
Overall
Crew
Reviews
Chris,Mar 2025
SEA - ICN
Airline | Cheapest | Average | Flexibility | On-time |
---|---|---|---|---|
Cheapest$367 | Average$1,538 | 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$997 | FlexibilityNo cancel fee | On-time77% | |
Cheapest$864 | Average$1,244 | FlexibilityNo cancel fee | On-time67% | |
Cheapest$876 | Average$1,250 | FlexibilityNo cancel fee | On-time71% | |
Cheapest$877 | Average$1,744 | FlexibilityNo cancel fee | On-timeN/A | |
Cheapest$1,059 | Average$1,688 | FlexibilityNo cancel fee | On-time81% |