Cheap flights to Washington County

View €77 flight on Thu, 16 Apr 2026Opens in a new window

Popular airlines to Washington County

  • Alaska Airlines

  • Delta

  • United

  • American Airlines

  • Southwest Airlines

  • Air Canada

  • Air France

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Cheap round-trip flights to Washington County

Prices were available within the past 7 days and start at €77 for one-way flights and €105 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Fri, 17 Apr - Sun, 19 Apr
SEA
Seattle
BOI
Boise
€105 Return, found 6 days ago
€105
Return
found 6 days ago
Select Delta flight, departing Fri, 17 Apr from Seattle to Boise, returning Sun, 19 Apr, priced at €105 found 6 days ago
Delta
Fri, 17 Apr - Sat, 25 Apr
SEA
Seattle
BOI
Boise
€129 Return, found 6 days ago
€129
Return
found 6 days ago
Select Delta flight, departing Fri, 17 Apr from Seattle to Boise, returning Sat, 25 Apr, priced at €129 found 6 days ago
Delta
Fri, 17 Apr - Sun, 19 Apr
SEA
Seattle
BOI
Boise
€147 Return, found 6 days ago
€147
Return
found 6 days ago
Select Delta flight, departing Fri, 17 Apr from Seattle to Boise, returning Sun, 19 Apr, priced at €147 found 6 days ago
Delta
Thu, 16 Apr - Sun, 19 Apr
SEA
Seattle
BOI
Boise
€154 Return, found 1 day ago
€154
Return
found 1 day ago
Select Delta flight, departing Thu, 16 Apr from Seattle to Boise, returning Sun, 19 Apr, priced at €154 found 1 day ago
Delta
Fri, 17 Apr - Sun, 19 Apr
SEA
Seattle
BOI
Boise
€178 Return, found 6 days ago
€178
Return
found 6 days ago
Select Delta flight, departing Fri, 17 Apr from Seattle to Boise, returning Sun, 19 Apr, priced at €178 found 6 days ago
Delta
Fri, 17 Apr - Sat, 25 Apr
SEA
Seattle
BOI
Boise
€185 Return, found 6 days ago
€185
Return
found 6 days ago
Select Delta flight, departing Fri, 17 Apr from Seattle to Boise, returning Sat, 25 Apr, priced at €185 found 6 days ago
United
Thu, 16 Apr - Sun, 19 Apr
SEA
Seattle
BOI
Boise
€194 Return, found 1 day ago
€194
Return
found 1 day ago
Select United flight, departing Thu, 16 Apr from Seattle to Boise, returning Sun, 19 Apr, priced at €194 found 1 day ago
American Airlines
Wed, 6 May - Sun, 10 May
PHX
Phoenix
BOI
Boise
€212 Return, found 19 hours ago
€212
Return
found 19 hours ago
Select American Airlines flight, departing Wed, 6 May from Phoenix to Boise, returning Sun, 10 May, priced at €212 found 19 hours ago
Scandinavian Airlines
Sat, 29 Aug - Sun, 13 Sept
DUB
Dublin
BOI
Boise
€708 Return, found 5 days ago
€708
Return
found 5 days ago
Select Scandinavian Airlines flight, departing Sat, 29 Aug from Dublin to Boise, returning Sun, 13 Sept, priced at €708 found 5 days ago
Condor
Thu, 16 Apr - Tue, 28 Apr
FRA
Frankfurt
BOI
Boise
€745 Return, found 1 day ago
€745
Return
found 1 day ago
Select Condor flight, departing Thu, 16 Apr from Frankfurt to Boise, returning Tue, 28 Apr, priced at €745 found 1 day 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.

Scandinavian Airlines
Sat, 29 Aug - Sun, 13 Sept
DUB
Dublin
BOI
Boise
€708 Return, found 5 days ago
€708
Return
found 5 days ago
Select Scandinavian Airlines flight, departing Sat, 29 Aug from Dublin to Boise, returning Sun, 13 Sept, priced at €708 found 5 days ago

Frequently asked questions

How do I find cheap flights to Washington County that have flexible change policies?
When it comes to flying these days, flexibility is a must. That's why we've added a "No change fee" filter to help you find cheap and flexible tickets to Washington County. It's on the left of your screen directly below the "Flexible change policies" heading.
Which airlines fly to Washington County?
You can choose from a selection of airlines that touch down in or near Washington County. Some of your top options are:

  • Alaska Airlines - 754 flights to or near Washington County each month, including 754 flights to Boise Airport (BOI) per month.
  • Delta Air Lines - 489 flights to or near Washington County each month, including 489 flights to Boise Airport (BOI) per month.
  • United Airlines - 303 flights to or near Washington County each month, including 303 flights to Boise Airport (BOI) per month.

How can I find cheap tickets to Washington County?
To nab a terrific deal to Washington County, book in advance. Also think about using Expedia's handy "flexible dates" link above your search results. This will show you the cheapest prices for nearby days. In the last seven days, €105 was the lowest price for a flight to Washington County.
How much is a flight to Washington County?
The price of a round-trip flight to Washington County in the last seven days varied between €105 and €745. If you were travelling one way out of Seattle (SEA), you could have gotten a low-cost fare from just €77.
What are the most popular airports to fly into in Washington County?
Book your flight to Boise Airport (BOI) and sample the best that Washington County has to offer. As the region's primary entry point, around 1,994 flights land here each month.
How much is a plane ticket to Washington County?
Ticket prices ranged anywhere from €105 to €745 in the last seven days. When you're ready to book, we're here to help you grab a cheap flight to Washington County.
What is the best time to go to Washington County?
A fantastic time to head for Washington County, as well as the exciting city of Weiser, is during the busy months of March, June and July. Summer here starts June 20, and you can look forward to temperatures of between 16ºC and 29ºC if you go then. This warmer weather is ideal for wandering around the city sights.
What months are the cheapest to book a flight to Washington County?
The best month to purchase low-cost fares to Washington County is February. It's worth noting that in the U.S, the most expensive time to purchase a ticket is during the busy month of December.

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About Washington County

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About Washington County

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