Cheap Flights to Washington County from ₩686,600

Popular airlines to Washington County

  • American Airlines

    American Airlines

  • Delta

    Delta

  • United

    United

  • Southwest Airlines

    Southwest Airlines

  • Alaska Airlines

    Alaska Airlines

  • Frontier Airlines

    Frontier Airlines

  • Air Canada

    Air Canada

    notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
    deals illustration

    Book smarter

    Save up to 40% on select hotels after you book a flight*
    trophy illustration

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

How much is the cheapest flight to Washington County?

Prices were available within the past 7 days and start at ₩686,600 for one-way flights and ₩955,900 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Mon, Nov 17 - Fri, Dec 5
ICN
Seoul
STL
St. Louis
₩955,900 Roundtrip, just found
₩955,900
Roundtrip
just found
Select American Airlines flight, departing Mon, Nov 17 from Seoul to St. Louis, returning Fri, Dec 5, priced at ₩955,900 just found
Delta
Sat, Dec 6 - Tue, Jan 6
ICN
Seoul
STL
St. Louis
₩959,600 Roundtrip, found 5 days ago
₩959,600
Roundtrip
found 5 days ago
Select Delta flight, departing Sat, Dec 6 from Seoul to St. Louis, returning Tue, Jan 6, priced at ₩959,600 found 5 days ago
Delta
Mon, Oct 20 - Fri, Oct 24
ICN
Seoul
STL
St. Louis
₩959,700 Roundtrip, found 20 hours ago
₩959,700
Roundtrip
found 20 hours ago
Select Delta flight, departing Mon, Oct 20 from Seoul to St. Louis, returning Fri, Oct 24, priced at ₩959,700 found 20 hours ago
American Airlines
Sat, Nov 8 - Sat, Nov 15
ICN
Seoul
STL
St. Louis
₩965,500 Roundtrip, found 6 days ago
₩965,500
Roundtrip
found 6 days ago
Select American Airlines flight, departing Sat, Nov 8 from Seoul to St. Louis, returning Sat, Nov 15, priced at ₩965,500 found 6 days ago
Delta
Mon, Oct 13 - Thu, Nov 13
ICN
Seoul
STL
St. Louis
₩977,600 Roundtrip, found 6 days ago
₩977,600
Roundtrip
found 6 days ago
Select Delta flight, departing Mon, Oct 13 from Seoul to St. Louis, returning Thu, Nov 13, priced at ₩977,600 found 6 days ago
Delta
Sat, Dec 6 - Tue, Jan 6
ICN
Seoul
STL
St. Louis
₩977,800 Roundtrip, found 5 days ago
₩977,800
Roundtrip
found 5 days ago
Select Delta flight, departing Sat, Dec 6 from Seoul to St. Louis, returning Tue, Jan 6, priced at ₩977,800 found 5 days ago
Delta
Sat, Oct 25 - Mon, Nov 10
ICN
Seoul
STL
St. Louis
₩977,900 Roundtrip, just found
₩977,900
Roundtrip
just found
Select Delta flight, departing Sat, Oct 25 from Seoul to St. Louis, returning Mon, Nov 10, priced at ₩977,900 just found
Korean Air
Mon, Oct 13 - Thu, Nov 13
ICN
Seoul
STL
St. Louis
₩1,002,600 Roundtrip, found 6 days ago
₩1,002,600
Roundtrip
found 6 days ago
Select Korean Air flight, departing Mon, Oct 13 from Seoul to St. Louis, returning Thu, Nov 13, priced at ₩1,002,600 found 6 days ago
United
Fri, May 29 - Sun, Jun 7
ICN
Seoul
STL
St. Louis
₩1,216,100 Roundtrip, found 3 days ago
₩1,216,100
Roundtrip
found 3 days ago
Select United flight, departing Fri, May 29 from Seoul to St. Louis, returning Sun, Jun 7, priced at ₩1,216,100 found 3 days ago
Air Canada
Wed, Oct 15 - Tue, Oct 21
ICN
Seoul
STL
St. Louis
₩1,402,300 Roundtrip, found 3 days ago
₩1,402,300
Roundtrip
found 3 days ago
Select Air Canada flight, departing Wed, Oct 15 from Seoul to St. Louis, returning Tue, Oct 21, priced at ₩1,402,300 found 3 days ago

Trending flights to Washington County

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Mon, Nov 17 - Fri, Dec 5
ICN
Seoul
STL
St. Louis
₩955,900 Roundtrip, just found
₩955,900
Roundtrip
just found
Select American Airlines flight, departing Mon, Nov 17 from Seoul to St. Louis, returning Fri, Dec 5, priced at ₩955,900 just found

Frequently asked questions

How do I find cheap flights to Washington County that have flexible change policies?
At Expedia, we've been channeling our inner yogi to provide you with the most flexible airfares on the market. Just check the "No change fee" box right under the filter heading "Flexible change policies" to find your dream flight to Washington County.
Which airlines fly to Washington County?
With a great range of airlines operating flights into or near Washington County, you're not short on choice:

  • Southwest Airlines - 2,214 flights to or near Washington County each month, including 2,214 flights to Lambert-St. Louis Intl. Airport (STL) per month.
  • American Airlines - 789 flights to or near Washington County each month, including 789 flights to Lambert-St. Louis Intl. Airport (STL) per month.
  • Delta Air Lines - 650 flights to or near Washington County each month, including 650 flights to Lambert-St. Louis Intl. Airport (STL) per month.

How can I find cheap tickets to Washington County?
You'll always nab an amazing deal with Expedia, but our "flexible dates" feature makes it that much easier. Enter your preferred travel date, then click on the flexible dates box above to compare prices for nearby days. ₩955,900 was the best price for a flight to Washington County in the last seven days.
How much is a flight to Washington County?
You could have scored a return ticket to Washington County from anywhere between ₩955,900 and ₩1,402,300 in the last seven days. For one-way trips departing from Seoul (ICN), the lowest amount paid during this time was ₩686,600.
What are the most popular airports to fly into in Washington County?
Book your flight to Lambert-St. Louis Intl. Airport (STL) and sample the best that Washington County has to offer. As the region's primary entry point, approximately 4,902 flights touch down here every month.
When is the cheapest time to fly to Washington County?
Fly out on a Tuesday to raise your chances of landing the cheapest flight to Washington County. Mondays are usually the next most affordable day to depart. Saturday is typically the costliest day to fly anywhere.
How much is a plane ticket to Washington County?
Fares to Washington County varied from ₩955,900 to ₩1,402,300 in the last seven days. Generally, the sooner you make a reservation, the better the deal.
What is the best time to go to Washington County?
July, August and September are the most popular months to venture to Sullivan, one of Washington County's most interesting cities. Summertime here starts June 20. Average temperatures vary from 65ºF to 85ºF across this season, so organize your travels around then if you're into warmer weather.
What months are the cheapest to book a flight to Washington County?
February is the ideal month to bag an awesome deal to Washington County. Keep in mind that the most expensive time to make a booking in the States isn't during the height of summer, but the month of December.

Book with confidence

Book with confidence

About Washington County

Expedia offers flights to Washington County to meet every traveler's needs. Whatever your flight need - Expedia has the flight for you. So choose from flights to Washington County or destinations around the world and discover how easy it is to make your flight reservations on Expedia.
About Washington County

Explore a world of travel with Expedia

Explore a world of travel with Expedia

*Available to Expedia members.