Cheap Flights to Washington County | Popular Routes to Washington County from HK$2,547

Popular airlines to Washington County

  • American Airlines

    American Airlines

  • Delta

    Delta

  • United

    United

  • Frontier Airlines

    Frontier Airlines

  • Southwest Airlines

    Southwest Airlines

  • Alaska Airlines

    Alaska Airlines

  • Air Canada

    Air Canada

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 35% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap round-trip flights to Washington County

Prices were available within the past 7 days and start at HK$2,547 for one-way flights and HK$5,897 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, 10 Sept - Sun, 14 Sept
IAH
Houston
STL
St. Louis
HK$5,897 Return, found 19 hours ago
HK$5,897
Return
found 19 hours ago
Select United flight, departing Wed, 10 Sept from Houston to St. Louis, returning Sun, 14 Sept, priced at HK$5,897 found 19 hours ago
United
Wed, 10 Sept - Sun, 14 Sept
IAH
Houston
STL
St. Louis
HK$5,974 Return, found 19 hours ago
HK$5,974
Return
found 19 hours ago
Select United flight, departing Wed, 10 Sept from Houston to St. Louis, returning Sun, 14 Sept, priced at HK$5,974 found 19 hours ago
American Airlines
Wed, 10 Sept - Sun, 14 Sept
IAH
Houston
STL
St. Louis
HK$6,051 Return, found 19 hours ago
HK$6,051
Return
found 19 hours ago
Select American Airlines flight, departing Wed, 10 Sept from Houston to St. Louis, returning Sun, 14 Sept, priced at HK$6,051 found 19 hours ago
Delta
Wed, 10 Sept - Sun, 14 Sept
IAH
Houston
STL
St. Louis
HK$6,051 Return, found 19 hours ago
HK$6,051
Return
found 19 hours ago
Select Delta flight, departing Wed, 10 Sept from Houston to St. Louis, returning Sun, 14 Sept, priced at HK$6,051 found 19 hours ago
United
Wed, 10 Sept - Sun, 14 Sept
IAH
Houston
STL
St. Louis
HK$6,318 Return, found 19 hours ago
HK$6,318
Return
found 19 hours ago
Select United flight, departing Wed, 10 Sept from Houston to St. Louis, returning Sun, 14 Sept, priced at HK$6,318 found 19 hours ago
American Airlines
Wed, 10 Sept - Sun, 14 Sept
IAH
Houston
STL
St. Louis
HK$6,329 Return, found 19 hours ago
HK$6,329
Return
found 19 hours ago
Select American Airlines flight, departing Wed, 10 Sept from Houston to St. Louis, returning Sun, 14 Sept, priced at HK$6,329 found 19 hours ago
Delta
Wed, 10 Sept - Sun, 14 Sept
IAH
Houston
STL
St. Louis
HK$6,395 Return, found 19 hours ago
HK$6,395
Return
found 19 hours ago
Select Delta flight, departing Wed, 10 Sept from Houston to St. Louis, returning Sun, 14 Sept, priced at HK$6,395 found 19 hours ago
American Airlines
Wed, 10 Sept - Sun, 14 Sept
IAH
Houston
STL
St. Louis
HK$6,406 Return, found 19 hours ago
HK$6,406
Return
found 19 hours ago
Select American Airlines flight, departing Wed, 10 Sept from Houston to St. Louis, returning Sun, 14 Sept, priced at HK$6,406 found 19 hours ago
China Airlines
Mon, 19 Jan - Sun, 25 Jan
HKG
Hong Kong SAR
STL
St. Louis
HK$7,411 Return, found 3 days ago
HK$7,411
Return
found 3 days ago
Select China Airlines flight, departing Mon, 19 Jan from Hong Kong SAR to St. Louis, returning Sun, 25 Jan, priced at HK$7,411 found 3 days ago
EVA Airways
Mon, 22 Sept - Sat, 27 Sept
HKG
Hong Kong SAR
STL
St. Louis
HK$8,022 Return, found 2 days ago
HK$8,022
Return
found 2 days ago
Select EVA Airways flight, departing Mon, 22 Sept from Hong Kong SAR to St. Louis, returning Sat, 27 Sept, priced at HK$8,022 found 2 days ago
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$5,897 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$5,897 and HK$8,022 in the last seven days. For one-way trips departing from Houston (IAH), the lowest amount paid during this time was HK$2,547.
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$5,897 to HK$8,022 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.

China Airlines
Mon, 19 Jan - Sun, 25 Jan
HKG
Hong Kong SAR
STL
St. Louis
HK$7,411 Return, found 3 days ago
HK$7,411
Return
found 3 days ago
Select China Airlines flight, departing Mon, 19 Jan from Hong Kong SAR to St. Louis, returning Sun, 25 Jan, priced at HK$7,411 found 3 days ago
*Available to Expedia members.