Flight to Washington County

View S$114 flight on Wed, 10 Jun, 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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Cheap round-trip flights to Washington County

Prices were available within the past 7 days and start at S$114 for one-way flights and S$241 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Mon, 1 Jun - Tue, 2 Jun
SEA
Seattle
STL
St. Louis
S$241 Return, found 9 hours ago
S$241
Return
found 9 hours ago
Select Delta flight, departing Mon, 1 Jun from Seattle to St. Louis, returning Tue, 2 Jun, priced at S$241 found 9 hours ago
United
Mon, 1 Jun - Tue, 2 Jun
SEA
Seattle
STL
St. Louis
S$419 Return, found 9 hours ago
S$419
Return
found 9 hours ago
Select United flight, departing Mon, 1 Jun from Seattle to St. Louis, returning Tue, 2 Jun, priced at S$419 found 9 hours ago
Delta
Sun, 24 May - Tue, 2 Jun
SFO
San Francisco
STL
St. Louis
S$515 Return, found 1 day ago
S$515
Return
found 1 day ago
Select Delta flight, departing Sun, 24 May from San Francisco to St. Louis, returning Tue, 2 Jun, priced at S$515 found 1 day ago
Delta
Mon, 15 Jun - Mon, 22 Jun
SLC
Salt Lake City
STL
St. Louis
S$559 Return, found 1 day ago
S$559
Return
found 1 day ago
Select Delta flight, departing Mon, 15 Jun from Salt Lake City to St. Louis, returning Mon, 22 Jun, priced at S$559 found 1 day ago
American Airlines
Thu, 4 Jun - Wed, 10 Jun
SEA
Seattle
STL
St. Louis
S$589 Return, found 16 hours ago
S$589
Return
found 16 hours ago
Select American Airlines flight, departing Thu, 4 Jun from Seattle to St. Louis, returning Wed, 10 Jun, priced at S$589 found 16 hours ago
Qatar Airways
Sun, 18 Oct - Mon, 2 Nov
SIN
Singapore
STL
St. Louis
S$1,500 Return, found 5 days ago
S$1,500
Return
found 5 days ago
Select Qatar Airways flight, departing Sun, 18 Oct from Singapore to St. Louis, returning Mon, 2 Nov, priced at S$1,500 found 5 days ago
Qatar Airways
Sun, 18 Oct - Mon, 2 Nov
SIN
Singapore
STL
St. Louis
S$1,560 Return, found 5 days ago
S$1,560
Return
found 5 days ago
Select Qatar Airways flight, departing Sun, 18 Oct from Singapore to St. Louis, returning Mon, 2 Nov, priced at S$1,560 found 5 days ago
Japan Airlines
Thu, 27 Aug - Tue, 8 Sept
SIN
Singapore
STL
St. Louis
S$1,706 Return, found 6 days ago
S$1,706
Return
found 6 days ago
Select Japan Airlines flight, departing Thu, 27 Aug from Singapore to St. Louis, returning Tue, 8 Sept, priced at S$1,706 found 6 days ago
Cathay Pacific
Tue, 6 Oct - Sat, 17 Oct
SIN
Singapore
STL
St. Louis
S$2,018 Return, found 1 day ago
S$2,018
Return
found 1 day ago
Select Cathay Pacific flight, departing Tue, 6 Oct from Singapore to St. Louis, returning Sat, 17 Oct, priced at S$2,018 found 1 day ago
Japan Airlines
Fri, 26 Jun - Fri, 3 Jul
SIN
Singapore
COU
Columbia
S$2,046 Return, found 5 days ago
S$2,046
Return
found 5 days ago
Select Japan Airlines flight, departing Fri, 26 Jun from Singapore to Columbia, returning Fri, 3 Jul, priced at S$2,046 found 5 days ago

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.

Qatar Airways
Sun, 18 Oct - Mon, 2 Nov
SIN
Singapore
STL
St. Louis
S$1,500 Return, found 5 days ago
S$1,500
Return
found 5 days ago
Select Qatar Airways flight, departing Sun, 18 Oct from Singapore to St. Louis, returning Mon, 2 Nov, priced at S$1,500 found 5 days ago

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. S$241 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 S$241 and S$2,046 in the last seven days. For one-way trips departing from Seattle (SEA), the lowest amount paid during this time was S$114.
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 S$241 to S$2,046 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.

Travel information

Washington County Flights Information

Airlines serving
Delta, American Airlines, United, Qatar Airways, Air Canada, Cathay Pacific, Japan Airlines
Roundtrip price
from S$241
Washington County Flights Information

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