Cheap Flights to Washington County | Popular Routes to Washington County from HK$2,512

View HK$2,512 flight on Thu, 5 Nov 2026Opens in a new window

Popular airlines to Washington County

  • HK Express

  • Cathay Pacific

  • Peach

  • British Airways

  • AirAsia

  • Thai AirAsia

  • Hong Kong Airlines

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

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

  • 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$2,512 for one-way flights and HK$5,184 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Thu, 5 Nov - Sun, 8 Nov
STS
Santa Rosa
BOI
Boise
HK$5,184 Return, found 11 hours ago
HK$5,184
Return
found 11 hours ago
Select American Airlines flight, departing Thu, 5 Nov from Santa Rosa to Boise, returning Sun, 8 Nov, priced at HK$5,184 found 11 hours ago
American Airlines
Thu, 5 Nov - Sun, 8 Nov
STS
Santa Rosa
BOI
Boise
HK$5,572 Return, found 11 hours ago
HK$5,572
Return
found 11 hours ago
Select American Airlines flight, departing Thu, 5 Nov from Santa Rosa to Boise, returning Sun, 8 Nov, priced at HK$5,572 found 11 hours ago
American Airlines
Thu, 5 Nov - Sun, 8 Nov
STS
Santa Rosa
BOI
Boise
HK$5,582 Return, found 11 hours ago
HK$5,582
Return
found 11 hours ago
Select American Airlines flight, departing Thu, 5 Nov from Santa Rosa to Boise, returning Sun, 8 Nov, priced at HK$5,582 found 11 hours ago
American Airlines
Thu, 5 Nov - Sun, 8 Nov
STS
Santa Rosa
BOI
Boise
HK$5,647 Return, found 11 hours ago
HK$5,647
Return
found 11 hours ago
Select American Airlines flight, departing Thu, 5 Nov from Santa Rosa to Boise, returning Sun, 8 Nov, priced at HK$5,647 found 11 hours ago
American Airlines
Thu, 5 Nov - Sun, 8 Nov
STS
Santa Rosa
BOI
Boise
HK$5,969 Return, found 11 hours ago
HK$5,969
Return
found 11 hours ago
Select American Airlines flight, departing Thu, 5 Nov from Santa Rosa to Boise, returning Sun, 8 Nov, priced at HK$5,969 found 11 hours ago
American Airlines
Thu, 5 Nov - Sun, 8 Nov
STS
Santa Rosa
BOI
Boise
HK$6,034 Return, found 11 hours ago
HK$6,034
Return
found 11 hours ago
Select American Airlines flight, departing Thu, 5 Nov from Santa Rosa to Boise, returning Sun, 8 Nov, priced at HK$6,034 found 11 hours ago
Delta
Sun, 23 Aug - Sat, 5 Sept
TPE
Taipei
BOI
Boise
HK$8,814 Return, found 1 day ago
HK$8,814
Return
found 1 day ago
Select Delta flight, departing Sun, 23 Aug from Taipei to Boise, returning Sat, 5 Sept, priced at HK$8,814 found 1 day ago
China Airlines
Sun, 23 Aug - Sat, 5 Sept
TPE
Taipei
BOI
Boise
HK$8,924 Return, found 1 day ago
HK$8,924
Return
found 1 day ago
Select China Airlines flight, departing Sun, 23 Aug from Taipei to Boise, returning Sat, 5 Sept, priced at HK$8,924 found 1 day ago
United
Sun, 23 Aug - Sat, 5 Sept
TPE
Taipei
BOI
Boise
HK$9,074 Return, found 1 day ago
HK$9,074
Return
found 1 day ago
Select United flight, departing Sun, 23 Aug from Taipei to Boise, returning Sat, 5 Sept, priced at HK$9,074 found 1 day ago
Cathay Pacific
Sun, 23 Aug - Sat, 5 Sept
TPE
Taipei
BOI
Boise
HK$9,752 Return, found 1 day ago
HK$9,752
Return
found 1 day ago
Select Cathay Pacific flight, departing Sun, 23 Aug from Taipei to Boise, returning Sat, 5 Sept, priced at HK$9,752 found 1 day 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, HK$5,184 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 HK$5,184 and HK$9,752. If you were traveling one way out of Santa Rosa (STS), you could have gotten a low-cost fare from just HK$2,512.
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.
When is the cheapest time to fly to Washington County?
Fly out on a Tuesday to raise your chances of scoring the cheapest airfare to Washington County. Mondays are usually the second most affordable day to take off. Saturday is typically the most expensive day to fly anywhere.
How much is a plane ticket to Washington County?
Ticket prices ranged anywhere from HK$5,184 to HK$9,752 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.

Book with confidence

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.
About Washington County
*Available to Expedia members.