Expect long security queues at IAD, especially in the afternoon. Plan extra time to navigate between terminals.

Most accurate provider | CheapOair 3 stars |
|---|---|
Most trusted provider | CheapOair 3 stars |
Round-trip from | $1,066 (Kiwi.com) |
One-way from | $390 (Kiwi.com) |
Popular in | December |
Cheapest in | April |
Average price | $2,290 |
Good round-trip deal | $1,106 or less |
Good one-way deal | $562 or less |
Fly from
Fly to
Route
Depart
Return
Price
Washington, D.C.Incheon
IAD - ICN
IADICN
Washington, D.C. Dulles Intl
Tue 3/10
5:37 pm-12:45 pm
2 stops30h 08m
Incheon Intl
Tue 3/24
10:00 am-4:50 pm
2 stops43h 50m
Washington, D.C.Incheon
IAD - ICN
IADICN
Washington, D.C. Dulles Intl
Fri 2/13
6:20 pm-6:35 pm
2 stops34h 15m
Incheon Intl
Sat 2/21
8:35 pm-5:27 pm
2 stops34h 52m
Washington, D.C.Incheon
IAD - ICN
IADICN
Washington, D.C. Dulles Intl
Sat 1/17
5:26 pm-6:35 pm
2 stops35h 09m
Incheon Intl
Sun 1/25
8:35 pm-5:04 pm
2 stops34h 29m
Washington, D.C.Incheon
IAD - ICN
IADICN
Washington, D.C. Dulles Intl
Mon 2/9
5:26 pm-1:55 pm
2 stops30h 29m
Incheon Intl
Sun 2/15
1:45 pm-10:48 pm
2 stops47h 03m
Washington, D.C.Incheon
IAD - ICN
IADICN
Washington, D.C. Dulles Intl
Fri 5/15
7:15 pm-11:00 am
2 stops26h 45m
Incheon Intl
Tue 10/20
7:45 pm-5:16 pm
2 stops34h 31m
Washington, D.C.Incheon
IAD - ICN
IADICN
Washington, D.C. Dulles Intl
Mon 5/4
7:01 pm-11:00 am
2 stops26h 59m
Incheon Intl
Fri 5/29
7:45 pm-5:15 pm
2 stops34h 30m
Washington, D.C.Incheon
IAD - ICN
IADICN
Washington, D.C. Dulles Intl
Sun 3/8
7:09 pm-1:55 pm
2 stops29h 46m
Incheon Intl
Sat 3/14
10:00 am-6:19 pm
2 stops45h 19m
Washington, D.C.Incheon
IAD - ICN
IADICN
Washington, D.C. Dulles Intl
Mon 3/30
7:00 am-6:35 pm
1 stop22h 35m
Incheon Intl
Wed 4/22
8:35 pm-5:23 pm
2 stops33h 48m
Washington, D.C.Incheon
IAD - ICN
IADICN
Washington, D.C. Dulles Intl
Wed 1/21
11:50 am-5:40 pm
Nonstop15h 50m
Incheon Intl
Tue 3/10
10:15 am-10:50 am
Nonstop13h 35m
Washington, D.C.Incheon
IAD - ICN
IADICN
Washington, D.C. Dulles Intl
Tue 3/17
12:50 pm-5:40 pm
Nonstop15h 50m
Incheon Intl
Thu 3/26
10:15 am-10:50 am
Nonstop13h 35m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy2 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars |
Booking 54 days in advance of your planned departure date is, on average, the best time to get cheap flights from Washington, D.C. Dulles Intl Airport to Incheon Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Currently, October is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Incheon Intl Airport (average of $368). Flying from Washington, D.C. Dulles Intl Airport to Incheon Intl Airport in July is currently the most expensive (average of $1,151). 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.
It’s optimal to fly from Washington, D.C. Dulles Intl Airport to Incheon Intl Airport in the evening. By choosing this option you can save up to 29% on the cost of your flight, compared to a flight in the afternoon.
Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Incheon Intl Airport 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.
About 32% of weekly flights between Washington, D.C. and Incheon have experienced delays in the past year, with the average delay time being 123 minutes.
Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.
Saturday tends to have the lowest number of delays on this route, whereas Wednesday has historically faced a higher average of delays compared to other days of the week.
Over the last year, Korean Air have had the lowest number of delays on this route, with just 32% of flights being delayed.
Beijing (PEK) – chosen by Cheapflights users on 50% of 1-stop itineraries from Washington, D.C. Dulles Intl Airport to Incheon Intl Airport on Cheapflights.
Istanbul (IST) is the most affordable 1-stop option, with an average round-trip price of $1,031.
Flights via Beijing (PEK) have the shortest average one-way travel time for 1-stop routes: 23h 35m.
Flights via Beijing (PEK) offer the fastest connection on this route, with an average layover time of 3h 20m.
Comfort
Boarding
Food
Crew
Entertainment
Overall
Reviews
Chris,Mar 2025
SEA - ICN
Comfort
Boarding
Food
Crew
Entertainment
Overall
Reviews
Chris,Mar 2025
SEA - ICN
Comfort
Boarding
Food
Crew
Entertainment
Overall
Reviews
Chris,Mar 2025
SEA - ICN
Comfort
Boarding
Food
Crew
Entertainment
Overall
Reviews
Chris,Mar 2025
SEA - ICN
Comfort
Boarding
Food
Crew
Entertainment
Overall
Reviews
Chris,Mar 2025
SEA - ICN
Comfort
Boarding
Food
Crew
Entertainment
Overall
Reviews
Chris,Mar 2025
SEA - ICN
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$317 | Average$1,576 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$397 | Average$1,938 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$591 | Average$747 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$759 | Average$2,186 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$800 | Average$993 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$876 | Average$1,332 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$948 | Average$1,520 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$1,576 | Average$1,955 | FlexibilityNo cancel fee | On-time81% |