For a smooth departure from IAD, use the Aerotrain to navigate between terminals efficiently. Allow extra time for security during peak afternoon hours.
Most accurate provider | AranGrant 3 stars |
---|---|
Most trusted provider | AranGrant 3 stars |
Round-trip from | $931 (Kiwi.com) |
One-way from | $465 (Trip.com) |
Popular in | June |
Cheapest in | January |
Average price | $1,233 |
Good round-trip deal | $1,253 or less |
Good one-way deal | $657 or less |
Fly from
Fly to
Route
Depart
Return
Price
Washington, D.C.Incheon
IAD - ICN
IADICN
Washington, D.C. Dulles Intl
Fri 8/29
6:45 pm-6:45 pm
1 stop35h 00m
Incheon Intl
Sun 9/14
9:40 pm-5:50 pm
1 stop33h 10m
Washington, D.C.Incheon
IAD - ICN
IADICN
Washington, D.C. Dulles Intl
Wed 8/27
1:30 pm-5:40 pm
1 stop39h 10m
Incheon Intl
Fri 9/5
10:20 am-11:45 am
1 stop38h 25m
Washington, D.C.Incheon
IAD - ICN
IADICN
Washington, D.C. Dulles Intl
Thu 5/8
3:32 pm-8:30 pm
2 stops39h 58m
Incheon Intl
Wed 5/21
6:20 pm-5:55 am
1 stop24h 35m
BaltimoreIncheon
BWI - ICN
BWIICN
Baltimore/Washington
Fri 5/9
7:17 am-8:30 pm
2 stops48h 13m
Incheon Intl
Tue 5/13
12:45 pm-7:39 pm
1 stop19h 54m
Washington, D.C.Incheon
DCA - ICN
DCAICN
Washington, D.C. Reagan-National
Sat 5/17
6:00 pm-8:30 pm
2 stops37h 30m
Incheon Intl
Fri 5/23
6:20 pm-5:38 pm
1 stop36h 18m
Washington, D.C.Incheon
DCA - ICN
DCAICN
Washington, D.C. Reagan-National
Sun 5/4
10:00 pm-12:40 pm
2 stops49h 40m
Incheon Intl
Sun 5/18
8:05 pm-7:07 pm
2 stops36h 02m
Washington, D.C.Incheon
IAD - ICN
IADICN
Washington, D.C. Dulles Intl
Wed 10/15
10:25 am-5:30 pm
1 stop18h 05m
Incheon Intl
Mon 10/20
5:45 pm-11:16 am
2 stops30h 31m
Washington, D.C.Incheon
IAD - ICN
IADICN
Washington, D.C. Dulles Intl
Wed 5/7
5:38 pm-12:40 pm
2 stops30h 02m
Incheon Intl
Thu 7/10
10:10 am-10:59 am
2 stops37h 49m
BaltimoreIncheon
BWI - ICN
BWIICN
Baltimore/Washington
Thu 6/5
5:40 am-6:45 pm
2 stops24h 05m
Incheon Intl
Thu 6/26
8:45 pm-10:52 am
2 stops27h 07m
Washington, D.C.Incheon
IAD - ICN
IADICN
Washington, D.C. Dulles Intl
Tue 10/14
5:10 pm-11:15 am
2 stops29h 05m
Incheon Intl
Mon 10/20
8:35 pm-11:50 am
2 stops52h 15m
Provider | Price Accuracy | Trust Score* |
---|---|---|
Price Accuracy1 star | Trust Score*3 stars | |
Price Accuracy3 stars | Trust Score*2 stars | |
Price Accuracy3 stars | Trust Score*3 stars | |
Price Accuracy3 stars | Trust Score*3 stars |
To ensure you get the cheapest price possible for a flight from Washington, D.C. to Seoul, you should look to book at least 26 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 $1,001). Flying from Washington, D.C. to Seoul in June is currently the most expensive (average of $1,650). 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 34% versus a flight at noon.
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. Saturday 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).
In terms of precipitation, rainfall in Seoul ranges from 1.1 - 10.0 inches per month. July is typically the wettest month, when rainfall can reach 10.0 in. December is typically the driest time to visit Seoul when rainfall is around 1.1 in.
If weather is an important factor for your trip to Seoul, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).
Food
Crew
Comfort
Boarding
Entertainment
Overall
Reviews
Gary,Apr 2025
DPS - TPE
Food
Crew
Comfort
Boarding
Entertainment
Overall
Reviews
Gary,Apr 2025
DPS - TPE
Food
Crew
Comfort
Boarding
Entertainment
Overall
Reviews
Gary,Apr 2025
DPS - TPE
Food
Crew
Comfort
Boarding
Entertainment
Overall
Reviews
Gary,Apr 2025
DPS - TPE
Food
Crew
Comfort
Boarding
Entertainment
Overall
Reviews
Gary,Apr 2025
DPS - TPE
Food
Crew
Comfort
Boarding
Entertainment
Overall
Reviews
Gary,Apr 2025
DPS - TPE
Airline | Cheapest | Average | Flexibility | On-time |
---|---|---|---|---|
Cheapest$591 | Average$747 | FlexibilityNo cancel fee | On-time67% | |
Cheapest$660 | Average$1,747 | FlexibilityNo cancel fee | On-time69% | |
Cheapest$807 | Average$1,055 | FlexibilityNo cancel fee | On-time77% | |
Cheapest$865 | Average$1,265 | FlexibilityNo cancel fee | On-time67% | |
Cheapest$876 | Average$1,300 | FlexibilityNo cancel fee | On-time71% | |
Cheapest$877 | Average$1,924 | FlexibilityNo cancel fee | On-timeN/A | |
Cheapest$1,077 | Average$1,838 | FlexibilityNo cancel fee | On-time81% | |
Cheapest$1,298 | Average$2,023 | FlexibilityNo cancel fee | On-time76% | |
Cheapest$1,686 | Average$1,788 | FlexibilityNo cancel fee | On-time75% | |
Cheapest$1,698 | Average$1,707 | FlexibilityNo cancel fee | On-time77% |