For a smooth departure from IAD, use the Aerotrain to navigate between terminals efficiently. Allow extra time for security during peak afternoon hours.
$467+ Cheap flights from Washington, D.C. (WAS) to Seoul (SEL)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/22. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SEL
May 6 — May 131
1 adult, Economy
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Find cheap flights from Washington, D.C. to Seoul with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Washington, D.C. to Seoul are usually found in January or March, booked 26 days in advance, depart on a Wednesday or Tuesday and return on a Monday
Cheap flight deals from Washington, D.C. to Seoul
Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) to Seoul (SEL). 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 May 1, 2025.
Most accurate provider | AranGrant 3 stars |
|---|---|
Most trusted provider | AranGrant 3 stars |
Round-trip from | $882 (CrystalTravel) |
One-way from | $490 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $1,553 |
Good round-trip deal | $1,177 or less |
Good one-way deal | $657 or less |
Find flight deals from Washington, D.C. to Seoul
Cheapest flights from Washington, D.C. to SeoulExplore the most affordable flight options available from Washington, D.C. to Seoul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.
Explore the most affordable flight options available from Washington, D.C. to Seoul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.
This Kiwi.com deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/147:45 amIAD - ICN
2 stops23h 45mMultiple Airlines
Wed 5/286:20 pmICN - IAD
1 stop24h 35mMultiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$897
This FlightHub deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/282:10 pmIAD - ICN
1 stop39h 10mTurkish Airlines
Thu 11/612:10 amICN - IAD
1 stop33h 20mTurkish Airlines
Deal found 4/29![Turkish Airlines logo]()
$899
This Kiwi.com deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/137:17 amBWI - ICN
2 stops48h 13mMultiple Airlines
Thu 5/2212:45 pmICN - BWI
1 stop19h 54mMultiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$983
This oojo deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/65:38 pmIAD - ICN
2 stops30h 02mCathay Pacific
Wed 6/183:10 pmICN - IAD
2 stops28h 40mCathay Pacific
Deal found 4/29![Cathay Pacific logo]()
$1,061
This Kiwi.com deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/306:00 pmDCA - ICN
2 stops37h 30mMultiple Airlines
Fri 6/610:05 pmICN - DCA
1 stop35h 54mMultiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$1,084
This oojo deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2012:31 pmDCA - ICN
2 stops35h 09mCathay Pacific
Wed 12/177:35 pmICN - DCA
2 stops41h 33mCathay Pacific
Deal found 4/30![Cathay Pacific logo]()
$1,093
This Air Canada deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/105:31 pmIAD - ICN
2 stops33h 34mAir Canada
Tue 11/186:50 pmICN - IAD
2 stops30h 26mAir Canada
Deal found 4/30![Air Canada logo]()
$1,134
This United Airlines deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/16:56 pmBWI - ICN
1 stop20h 24mUnited Airlines
Wed 9/1711:30 amICN - BWI
1 stop19h 01mUnited Airlines
Deal found 4/30![United Airlines logo]()
$1,178
This SmartFares deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/296:45 pmIAD - ICN
1 stop35h 00mWestJet
Sun 9/149:40 pmICN - IAD
1 stop33h 10mWestJet
Deal found 4/30![WestJet logo]()
$1,180
This oojo deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2711:47 amBWI - ICN
2 stops35h 53mCathay Pacific
Tue 9/210:10 amICN - BWI
2 stops39h 19mCathay Pacific
Deal found 4/30![Cathay Pacific logo]()
$1,226
This Ovago deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/211:00 pmIAD - ICN
1 stop23h 35mAir China
Tue 9/1610:50 amICN - IAD
1 stop21h 40mAir China
Deal found 4/30![Air China logo]()
$1,237
This Justfly.com deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/94:30 pmDCA - ICN
1 stop34h 45mAir Canada
Wed 11/198:10 pmICN - DCA
1 stop16h 27mAir Canada
Deal found 4/30![Air Canada logo]()
$1,267
Cheapflights Fare Finder
Customize your flight search to find flights from Washington, D.C. to Seoul that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 1, 2025.
Use the filters below to find and compare flights from Washington, D.C. to Seoul that are best for you.
Fly from
Washington, D.C.
Fly to
Seoul
Route
Depart
Return
Price
Washington, D.C.Incheon
IAD - ICN
IADICN
Washington, D.C. Dulles Intl
Wed 5/14
7:45 am-8:30 pm
2 stops23h 45m
Incheon Intl
Wed 5/28
6:20 pm-5:55 am
1 stop24h 35m
$897
Washington, D.C.Incheon
IAD - ICN
IADICN
Washington, D.C. Dulles Intl
Tue 10/28
2:10 pm-6:20 pm
1 stop39h 10m
Incheon Intl
Thu 11/6
12:10 am-7:30 pm
1 stop33h 20m
$899
BaltimoreIncheon
BWI - ICN
BWIICN
Baltimore/Washington
Tue 5/13
7:17 am-8:30 pm
2 stops48h 13m
Incheon Intl
Thu 5/22
12:45 pm-7:39 pm
1 stop19h 54m
$983
Washington, D.C.Incheon
IAD - ICN
IADICN
Washington, D.C. Dulles Intl
Tue 8/26
11:51 am-12:40 pm
2 stops35h 49m
Incheon Intl
Tue 9/2
10:10 am-4:18 pm
2 stops43h 08m
$1,070
Washington, D.C.Incheon
DCA - ICN
DCAICN
Washington, D.C. Reagan-National
Fri 5/30
6:00 pm-8:30 pm
2 stops37h 30m
Incheon Intl
Fri 6/6
10:05 pm-8:59 pm
1 stop35h 54m
$1,084
Washington, D.C.Incheon
DCA - ICN
DCAICN
Washington, D.C. Reagan-National
Wed 8/20
12:31 pm-12:40 pm
2 stops35h 09m
Incheon Intl
Wed 12/17
7:35 pm-11:08 pm
2 stops41h 33m
$1,093
Washington, D.C.Incheon
IAD - ICN
IADICN
Washington, D.C. Dulles Intl
Sun 8/10
5:31 pm-4:05 pm
2 stops33h 34m
Incheon Intl
Tue 11/18
6:50 pm-11:16 am
2 stops30h 26m
$1,134
BaltimoreIncheon
BWI - ICN
BWIICN
Baltimore/Washington
Mon 9/1
6:56 pm-4:20 am
1 stop20h 24m
Incheon Intl
Wed 9/17
11:30 am-5:31 pm
1 stop19h 01m
$1,178
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
$1,180
BaltimoreIncheon
BWI - ICN
BWIICN
Baltimore/Washington
Wed 8/27
11:47 am-12:40 pm
2 stops35h 53m
Incheon Intl
Tue 9/2
10:10 am-12:29 pm
2 stops39h 19m
$1,226
Showing 1-10 of 57 results
Compare providers for flights from Washington, D.C. to Seoul
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Washington, D.C. to Seoul in May.
| 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 |
- Most accurate provider: When it comes to deals on Washington, D.C.-Seoul flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Washington, D.C.-Seoul flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Washington, D.C.-Seoul flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Washington, D.C.-Seoul flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C.-Seoul flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
The best insider tips for Washington, D.C. to Seoul flights
Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Washington, D.C. to Seoul trip
Best time to book a flight from Washington, D.C. to Seoul
Have a flexible travel schedule? Discover the best time to fly to Seoul from Washington, D.C. with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Washington, D.C. to Seoul
How far ahead should I book a flight from Washington, D.C. to Seoul?
Use this chart to determine the optimal time to book a round-trip flight from Washington, D.C. to Seoul. Price data was last updated on April 25, 2025.
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.
What is the cheapest month to book a flight from Washington, D.C. to Seoul?
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 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.
What is the cheapest time of day to fly from WAS to SEL?
Find hourly flight availability from Washington, D.C. to Seoul. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 1, 2025.
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.
What is the cheapest day to fly from Washington, D.C. to Seoul?
Use this chart to determine the cheapest time to fly round-trip from Washington, D.C. to Seoul. Price data was last updated on December 16, 2024.
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.
Weekly flight availability from Washington, D.C. to Seoul
Explore weekly flight availability from Washington, D.C. to Seoul. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated May 1, 2025.
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).
Rainfall in Seoul by month
Plan your trip to Seoul by taking into account the average rainfall totals by month.
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.
Temperature in Seoul by month
Plan your trip to Seoul by taking into account the average temperature totals by month.
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).
Reviews of airlines servicing Seoul
Get insights into the airlines that provide service to Seoul. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seoul. Reviews last updated May 1, 2025.
Read through reviews of airlines operating flights from Washington, D.C. to Seoul, such as EVA Air, Korean Air and Japan Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Overall
8.4
Entertainment
8.0
Comfort
8.3
Boarding
8.4
Crew
8.6
Food
8.1
Reviews
1 / 20
10.0
ExcellentDale,Apr 2025
SFO - TPE
Overall
8.4
Entertainment
8.0
Comfort
8.3
Boarding
8.4
Crew
8.6
Food
8.1
Reviews
1 / 20
10.0
ExcellentDale,Apr 2025
SFO - TPE
Overall
8.4
Entertainment
8.0
Comfort
8.3
Boarding
8.4
Crew
8.6
Food
8.1
Reviews
1 / 20
10.0
ExcellentDale,Apr 2025
SFO - TPE
Overall
8.4
Entertainment
8.0
Comfort
8.3
Boarding
8.4
Crew
8.6
Food
8.1
Reviews
1 / 20
10.0
ExcellentDale,Apr 2025
SFO - TPE
Overall
8.4
Entertainment
8.0
Comfort
8.3
Boarding
8.4
Crew
8.6
Food
8.1
Reviews
1 / 20
10.0
ExcellentDale,Apr 2025
SFO - TPE
Overall
8.4
Entertainment
8.0
Comfort
8.3
Boarding
8.4
Crew
8.6
Food
8.1
Reviews
1 / 20
10.0
ExcellentDale,Apr 2025
SFO - TPE
Related info for your journey
Find useful and relevant information for your journey from Washington, D.C. to Seoul. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes for Washington, D.C. to Seoul
See prices for flight routes from nearby airports that may be better suited for you.
Top 9 airlines flying from Washington, D.C. to Seoul
Discover the top 9 airlines that operate flights from Washington, D.C. to Seoul. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 1, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$591 | Average$747 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$660 | Average$1,755 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$807 | Average$1,053 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$865 | Average$1,266 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$876 | Average$1,303 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$877 | Average$1,836 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$1,077 | Average$1,822 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$1,298 | Average$2,023 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$1,698 | Average$1,707 | FlexibilityNo cancel fee | On-time77% |