Cheap Flights to Washington County | Popular Routes to Washington County from HK$574

View HK$574 flight on Sat, 23 May 2026Opens in a new window

Popular airlines to Washington County

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  • United

  • Southwest Airlines

  • Frontier Airlines

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  • Air Canada

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Cheap round-trip flights to Washington County

Prices were available within the past 7 days and start at HK$574 for one-way flights and HK$2,636 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu, 15 Oct - Tue, 1 Dec
ORD
Chicago
STL
St. Louis
HK$2,636 Return, found 1 day ago
HK$2,636
Return
found 1 day ago
Select Delta flight, departing Thu, 15 Oct from Chicago to St. Louis, returning Tue, 1 Dec, priced at HK$2,636 found 1 day ago
Delta
Thu, 15 Oct - Tue, 1 Dec
ORD
Chicago
STL
St. Louis
HK$2,795 Return, found 1 day ago
HK$2,795
Return
found 1 day ago
Select Delta flight, departing Thu, 15 Oct from Chicago to St. Louis, returning Tue, 1 Dec, priced at HK$2,795 found 1 day ago
Delta
Fri, 3 Apr - Fri, 10 Apr
ORD
Chicago
STL
St. Louis
HK$2,838 Return, found 3 days ago
HK$2,838
Return
found 3 days ago
Select Delta flight, departing Fri, 3 Apr from Chicago to St. Louis, returning Fri, 10 Apr, priced at HK$2,838 found 3 days ago
Delta
Thu, 15 Oct - Tue, 1 Dec
ORD
Chicago
STL
St. Louis
HK$2,873 Return, found 1 day ago
HK$2,873
Return
found 1 day ago
Select Delta flight, departing Thu, 15 Oct from Chicago to St. Louis, returning Tue, 1 Dec, priced at HK$2,873 found 1 day ago
Delta
Fri, 3 Apr - Fri, 10 Apr
ORD
Chicago
STL
St. Louis
HK$2,916 Return, found 3 days ago
HK$2,916
Return
found 3 days ago
Select Delta flight, departing Fri, 3 Apr from Chicago to St. Louis, returning Fri, 10 Apr, priced at HK$2,916 found 3 days ago
United
Fri, 16 Oct - Tue, 1 Dec
ORD
Chicago
STL
St. Louis
HK$2,953 Return, found 2 days ago
HK$2,953
Return
found 2 days ago
Select United flight, departing Fri, 16 Oct from Chicago to St. Louis, returning Tue, 1 Dec, priced at HK$2,953 found 2 days ago
American Airlines
Thu, 15 Oct - Tue, 1 Dec
ORD
Chicago
STL
St. Louis
HK$2,953 Return, found 1 day ago
HK$2,953
Return
found 1 day ago
Select American Airlines flight, departing Thu, 15 Oct from Chicago to St. Louis, returning Tue, 1 Dec, priced at HK$2,953 found 1 day ago
EVA Airways
Wed, 9 Sept - Wed, 28 Oct
HKG
Hong Kong SAR
STL
St. Louis
HK$6,934 Return, found 5 days ago
HK$6,934
Return
found 5 days ago
Select EVA Airways flight, departing Wed, 9 Sept from Hong Kong SAR to St. Louis, returning Wed, 28 Oct, priced at HK$6,934 found 5 days ago
Delta
Mon, 2 Mar - Wed, 4 Mar
TPE
Taipei
STL
St. Louis
HK$7,820 Return, found 2 days ago
HK$7,820
Return
found 2 days ago
Select Delta flight, departing Mon, 2 Mar from Taipei to St. Louis, returning Wed, 4 Mar, priced at HK$7,820 found 2 days ago
Cathay Pacific
Thu, 9 Apr - Mon, 13 Apr
HKG
Hong Kong SAR
STL
St. Louis
HK$8,480 Return, found 2 days ago
HK$8,480
Return
found 2 days ago
Select Cathay Pacific flight, departing Thu, 9 Apr from Hong Kong SAR to St. Louis, returning Mon, 13 Apr, priced at HK$8,480 found 2 days 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. HK$2,636 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 HK$2,636 and HK$8,480 in the last seven days. For one-way trips departing from Chicago (ORD), the lowest amount paid during this time was HK$574.
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 HK$2,636 to HK$8,480 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.

EVA Airways
Wed, 9 Sept - Wed, 28 Oct
HKG
Hong Kong SAR
STL
St. Louis
HK$6,934 Return, found 5 days ago
HK$6,934
Return
found 5 days ago
Select EVA Airways flight, departing Wed, 9 Sept from Hong Kong SAR to St. Louis, returning Wed, 28 Oct, priced at HK$6,934 found 5 days ago
*Available to Expedia members.