Cheap flights to Washington County

View €380 flight on Wed, 13 May 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 €380 for one-way flights and €632 for round trip, 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
American Airlines
Sat, 7 Mar - Sat, 14 Mar
DUB
Dublin
COU
Columbia
€634 Return, found 1 hour ago
€634
Return
found 1 hour ago
Select American Airlines flight, departing Sat, 7 Mar from Dublin to Columbia, returning Sat, 14 Mar, priced at €634 found 1 hour ago
American Airlines
Tue, 10 Feb - Fri, 20 Feb
DUB
Dublin
COU
Columbia
€639 Return, found 1 day ago
€639
Return
found 1 day ago
Select American Airlines flight, departing Tue, 10 Feb from Dublin to Columbia, returning Fri, 20 Feb, priced at €639 found 1 day ago
American Airlines
Tue, 10 Feb - Fri, 20 Feb
DUB
Dublin
COU
Columbia
€641 Return, found 1 day ago
€641
Return
found 1 day ago
Select American Airlines flight, departing Tue, 10 Feb from Dublin to Columbia, returning Fri, 20 Feb, priced at €641 found 1 day ago
American Airlines
Tue, 10 Feb - Fri, 20 Feb
DUB
Dublin
COU
Columbia
€645 Return, found 1 day ago
€645
Return
found 1 day ago
Select American Airlines flight, departing Tue, 10 Feb from Dublin to Columbia, returning Fri, 20 Feb, priced at €645 found 1 day ago
British Airways
Tue, 10 Feb - Mon, 16 Feb
DUB
Dublin
COU
Columbia
€647 Return, found 1 day ago
€647
Return
found 1 day ago
Select British Airways flight, departing Tue, 10 Feb from Dublin to Columbia, returning Mon, 16 Feb, priced at €647 found 1 day ago
American Airlines
Tue, 10 Feb - Sat, 21 Feb
DUB
Dublin
COU
Columbia
€648 Return, found 1 day ago
€648
Return
found 1 day ago
Select American Airlines flight, departing Tue, 10 Feb from Dublin to Columbia, returning Sat, 21 Feb, priced at €648 found 1 day ago
Aer Lingus
Wed, 13 May - Mon, 25 May
DUB
Dublin
STL
St. Louis
€654 Return, found 9 hours ago
€654
Return
found 9 hours ago
Select Aer Lingus flight, departing Wed, 13 May from Dublin to St. Louis, returning Mon, 25 May, priced at €654 found 9 hours ago
Lufthansa
Fri, 23 Jan - Thu, 5 Feb
DUB
Dublin
STL
St. Louis
€807 Return, found 2 hours ago
€807
Return
found 2 hours ago
Select Lufthansa flight, departing Fri, 23 Jan from Dublin to St. Louis, returning Thu, 5 Feb, priced at €807 found 2 hours ago
Iberia
Mon, 9 Feb - Sun, 15 Feb
DUB
Dublin
STL
St. Louis
€828 Return, found 1 hour ago
€828
Return
found 1 hour ago
Select Iberia flight, departing Mon, 9 Feb from Dublin to St. Louis, returning Sun, 15 Feb, priced at €828 found 1 hour 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. €632 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 €632 and €828 in the last seven days. For one-way trips departing from Dublin (DUB), the lowest amount paid during this time was €380.
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 €632 to €828 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.