Cheap flights to Washington County

View €112 flight on Sat, 17 Jan 2026Opens in a new window

Popular airlines to Washington County

  • American Airlines

    American Airlines

  • Delta

    Delta

  • United

    United

  • Southwest Airlines

    Southwest Airlines

  • Frontier Airlines

    Frontier Airlines

  • Alaska Airlines

    Alaska Airlines

  • Air Canada

    Air Canada

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Cheap round-trip flights to Washington County

Prices were available within the past 7 days and start at €112 for one-way flights and €222 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, 7 Jan - Wed, 14 Jan
EWR
New York
STL
St. Louis
€222 Return, found 12 hours ago
€222
Return
found 12 hours ago
Select Delta flight, departing Wed, 7 Jan from New York to St. Louis, returning Wed, 14 Jan, priced at €222 found 12 hours ago
American Airlines
Sat, 17 Jan - Sun, 18 Jan
EWR
New York
STL
St. Louis
€223 Return, found 3 days ago
€223
Return
found 3 days ago
Select American Airlines flight, departing Sat, 17 Jan from New York to St. Louis, returning Sun, 18 Jan, priced at €223 found 3 days ago
United
Tue, 26 May - Tue, 2 Jun
EWR
New York
STL
St. Louis
€246 Return, found 5 days ago
€246
Return
found 5 days ago
Select United flight, departing Tue, 26 May from New York to St. Louis, returning Tue, 2 Jun, priced at €246 found 5 days ago
Delta
Sat, 17 Jan - Sun, 18 Jan
EWR
New York
STL
St. Louis
€246 Return, found 3 days ago
€246
Return
found 3 days ago
Select Delta flight, departing Sat, 17 Jan from New York to St. Louis, returning Sun, 18 Jan, priced at €246 found 3 days ago
Delta
Tue, 26 May - Tue, 2 Jun
EWR
New York
STL
St. Louis
€249 Return, found 5 days ago
€249
Return
found 5 days ago
Select Delta flight, departing Tue, 26 May from New York to St. Louis, returning Tue, 2 Jun, priced at €249 found 5 days ago
American Airlines
Sat, 17 Jan - Sat, 24 Jan
LAX
Los Angeles
STL
St. Louis
€252 Return, found 9 hours ago
€252
Return
found 9 hours ago
Select American Airlines flight, departing Sat, 17 Jan from Los Angeles to St. Louis, returning Sat, 24 Jan, priced at €252 found 9 hours ago
Delta
Sat, 17 Jan - Sun, 18 Jan
EWR
New York
STL
St. Louis
€254 Return, found 3 days ago
€254
Return
found 3 days ago
Select Delta flight, departing Sat, 17 Jan from New York to St. Louis, returning Sun, 18 Jan, priced at €254 found 3 days ago
Delta
Sat, 17 Jan - Sun, 18 Jan
EWR
New York
STL
St. Louis
€256 Return, found 3 days ago
€256
Return
found 3 days ago
Select Delta flight, departing Sat, 17 Jan from New York to St. Louis, returning Sun, 18 Jan, priced at €256 found 3 days ago
Aer Lingus
Wed, 13 May - Mon, 25 May
DUB
Dublin
STL
St. Louis
€654 Return, found 15 hours ago
€654
Return
found 15 hours ago
Select Aer Lingus flight, departing Wed, 13 May from Dublin to St. Louis, returning Mon, 25 May, priced at €654 found 15 hours ago
Austrian Airlines
Fri, 23 Jan - Fri, 30 Jan
ZAG
Zagreb
STL
St. Louis
€778 Return, found 9 hours ago
€778
Return
found 9 hours ago
Select Austrian Airlines flight, departing Fri, 23 Jan from Zagreb to St. Louis, returning Fri, 30 Jan, priced at €778 found 9 hours ago

About Washington County

Expedia offers flights to Washington County to meet every traveller'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. €222 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 €222 and €778 in the last seven days. For one-way trips departing from New York (EWR), the lowest amount paid during this time was €112.
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.
How much is a plane ticket to Washington County?
Fares to Washington County varied from €222 to €778 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 18ºC to 29ºC across this season, so organise 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, return, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, 10 Feb - Fri, 20 Feb
DUB
Dublin
COU
Columbia
€632 Return, found 1 day ago
€632
Return
found 1 day ago
Select American Airlines flight, departing Tue, 10 Feb from Dublin to Columbia, returning Fri, 20 Feb, priced at €632 found 1 day ago
*Available to Expedia members.