Cheap Flights to Washington County from ₩246,600

View ₩246,600 flight on Thu, Feb 5, 2026Opens in a new window

Popular airlines to Washington County

  • American Airlines

  • Delta

  • United

  • Southwest Airlines

  • Frontier Airlines

  • Alaska Airlines

  • Air Canada

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How much is the cheapest flight to Washington County?

Prices were available within the past 7 days and start at ₩246,600 for one-way flights and ₩588,500 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Hawaiian Airlines
Thu, Feb 5 - Thu, Feb 12
SFO
San Francisco
STL
St. Louis
₩588,500 Roundtrip, found 6 days ago
₩588,500
Roundtrip
found 6 days ago
Select Hawaiian Airlines flight, departing Thu, Feb 5 from San Francisco to St. Louis, returning Thu, Feb 12, priced at ₩588,500 found 6 days ago
Hawaiian Airlines
Thu, Feb 5 - Thu, Feb 12
SFO
San Francisco
STL
St. Louis
₩614,800 Roundtrip, found 6 days ago
₩614,800
Roundtrip
found 6 days ago
Select Hawaiian Airlines flight, departing Thu, Feb 5 from San Francisco to St. Louis, returning Thu, Feb 12, priced at ₩614,800 found 6 days ago
Hawaiian Airlines
Thu, Feb 5 - Thu, Feb 12
SFO
San Francisco
STL
St. Louis
₩617,900 Roundtrip, found 6 days ago
₩617,900
Roundtrip
found 6 days ago
Select Hawaiian Airlines flight, departing Thu, Feb 5 from San Francisco to St. Louis, returning Thu, Feb 12, priced at ₩617,900 found 6 days ago
Hawaiian Airlines
Thu, Feb 5 - Thu, Feb 12
SFO
San Francisco
STL
St. Louis
₩638,400 Roundtrip, found 6 days ago
₩638,400
Roundtrip
found 6 days ago
Select Hawaiian Airlines flight, departing Thu, Feb 5 from San Francisco to St. Louis, returning Thu, Feb 12, priced at ₩638,400 found 6 days ago
Hawaiian Airlines
Thu, Feb 5 - Thu, Feb 12
SFO
San Francisco
STL
St. Louis
₩644,200 Roundtrip, found 6 days ago
₩644,200
Roundtrip
found 6 days ago
Select Hawaiian Airlines flight, departing Thu, Feb 5 from San Francisco to St. Louis, returning Thu, Feb 12, priced at ₩644,200 found 6 days ago
Hawaiian Airlines
Sat, Mar 14 - Mon, Mar 16
SFO
San Francisco
STL
St. Louis
₩652,800 Roundtrip, found 1 day ago
₩652,800
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Sat, Mar 14 from San Francisco to St. Louis, returning Mon, Mar 16, priced at ₩652,800 found 1 day ago
Delta
Sat, Mar 14 - Mon, Mar 16
SFO
San Francisco
STL
St. Louis
₩678,400 Roundtrip, found 1 day ago
₩678,400
Roundtrip
found 1 day ago
Select Delta flight, departing Sat, Mar 14 from San Francisco to St. Louis, returning Mon, Mar 16, priced at ₩678,400 found 1 day ago
United
Thu, Feb 5 - Thu, Feb 12
SFO
San Francisco
STL
St. Louis
₩768,900 Roundtrip, found 6 days ago
₩768,900
Roundtrip
found 6 days ago
Select United flight, departing Thu, Feb 5 from San Francisco to St. Louis, returning Thu, Feb 12, priced at ₩768,900 found 6 days ago
American Airlines
Tue, Aug 11 - Sat, Nov 14
SFO
San Francisco
STL
St. Louis
₩868,800 Roundtrip, found 1 day ago
₩868,800
Roundtrip
found 1 day ago
Select American Airlines flight, departing Tue, Aug 11 from San Francisco to St. Louis, returning Sat, Nov 14, priced at ₩868,800 found 1 day ago
Air Canada
Mon, May 4 - Sat, May 9
ICN
Seoul
STL
St. Louis
₩1,000,000 Roundtrip, found 3 hours ago
₩1,000,000
Roundtrip
found 3 hours ago
Select Air Canada flight, departing Mon, May 4 from Seoul to St. Louis, returning Sat, May 9, priced at ₩1,000,000 found 3 hours ago

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.

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. ₩588,500 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 ₩588,500 and ₩1,000,000 in the last seven days. For one-way trips departing from San Francisco (SFO), the lowest amount paid during this time was ₩246,600.
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 ₩588,500 to ₩1,000,000 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.

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.

Air Canada
Mon, May 4 - Sat, May 9
ICN
Seoul
STL
St. Louis
₩1,000,000 Roundtrip, found 3 hours ago
₩1,000,000
Roundtrip
found 3 hours ago
Select Air Canada flight, departing Mon, May 4 from Seoul to St. Louis, returning Sat, May 9, priced at ₩1,000,000 found 3 hours ago
*Available to Expedia members.