Cheap flights to Ada County

View €107 flight on Fri, 29 May 2026Opens in a new window

Popular airlines to Ada County

  • Alaska Airlines

  • Delta

  • United

  • American Airlines

  • Southwest Airlines

  • Air Canada

  • Frontier Airlines

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Cheap round-trip flights to Ada County

Prices were available within the past 7 days and start at €107 for one-way flights and €214 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Fri, 29 May - Mon, 1 Jun
SFO
San Francisco
BOI
Boise
€214 Return, found 1 day ago
€214
Return
found 1 day ago
Select Delta flight, departing Fri, 29 May from San Francisco to Boise, returning Mon, 1 Jun, priced at €214 found 1 day ago
Delta
Sat, 6 Jun - Mon, 8 Jun
SFO
San Francisco
BOI
Boise
€215 Return, found 2 days ago
€215
Return
found 2 days ago
Select Delta flight, departing Sat, 6 Jun from San Francisco to Boise, returning Mon, 8 Jun, priced at €215 found 2 days ago
Delta
Mon, 27 Apr - Sun, 3 May
LGA
New York
BOI
Boise
€232 Return, found 4 days ago
€232
Return
found 4 days ago
Select Delta flight, departing Mon, 27 Apr from New York to Boise, returning Sun, 3 May, priced at €232 found 4 days ago
Delta
Fri, 29 May - Mon, 1 Jun
SFO
San Francisco
BOI
Boise
€234 Return, found 1 day ago
€234
Return
found 1 day ago
Select Delta flight, departing Fri, 29 May from San Francisco to Boise, returning Mon, 1 Jun, priced at €234 found 1 day ago
Delta
Fri, 29 May - Mon, 1 Jun
SFO
San Francisco
BOI
Boise
€237 Return, found 1 day ago
€237
Return
found 1 day ago
Select Delta flight, departing Fri, 29 May from San Francisco to Boise, returning Mon, 1 Jun, priced at €237 found 1 day ago
Delta
Fri, 1 May - Fri, 8 May
LGA
New York
BOI
Boise
€241 Return, found 1 day ago
€241
Return
found 1 day ago
Select Delta flight, departing Fri, 1 May from New York to Boise, returning Fri, 8 May, priced at €241 found 1 day ago
United
Fri, 29 May - Mon, 1 Jun
SFO
San Francisco
BOI
Boise
€241 Return, found 1 day ago
€241
Return
found 1 day ago
Select United flight, departing Fri, 29 May from San Francisco to Boise, returning Mon, 1 Jun, priced at €241 found 1 day ago
American Airlines
Fri, 1 May - Fri, 8 May
LGA
New York
BOI
Boise
€280 Return, found 1 day ago
€280
Return
found 1 day ago
Select American Airlines flight, departing Fri, 1 May from New York to Boise, returning Fri, 8 May, priced at €280 found 1 day ago
Finnair
Thu, 30 Apr - Thu, 7 May
DUB
Dublin
BOI
Boise
€852 Return, found 7 hours ago
€852
Return
found 7 hours ago
Select Finnair flight, departing Thu, 30 Apr from Dublin to Boise, returning Thu, 7 May, priced at €852 found 7 hours ago
Iberia
Thu, 30 Apr - Thu, 7 May
DUB
Dublin
BOI
Boise
€958 Return, found 7 hours ago
€958
Return
found 7 hours ago
Select Iberia flight, departing Thu, 30 Apr from Dublin to Boise, returning Thu, 7 May, priced at €958 found 7 hours ago

Trending flights to Ada 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.

Finnair
Thu, 30 Apr - Thu, 7 May
DUB
Dublin
BOI
Boise
€852 Return, found 7 hours ago
€852
Return
found 7 hours ago
Select Finnair flight, departing Thu, 30 Apr from Dublin to Boise, returning Thu, 7 May, priced at €852 found 7 hours ago

Frequently asked questions

How do I find cheap flights to Ada County that have flexible change policies?
We know that travel arrangements can change from one day to the next, so locking in a flexible ticket with Expedia makes sense. Just check the "No change fee" box below the "Flexible change policies" filter. Your low-cost, flexible flight to Ada County is just a few clicks away.
Which airlines fly to Ada County?
When you're ready to reserve your airfare to or near Ada County, these quality carriers look forward to welcoming you aboard:

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

How can I find cheap tickets to Ada County?
In the last seven days, €214 was the best price for a flight to Ada County. For even bigger savings, book ahead of time and be flexible with your travel dates. Search for your flight to Ada County, then see prices for similar time frames by clicking on our "flexible dates" link.
How much is a flight to Ada County?
In the last seven days, round-trip tickets to Ada County sold for as low as €214 and peaked at €958. For one-way trips out of San Francisco (SFO), the lowest price during this time was €107.
What are the most popular airports to fly into in Ada County?
The number one gateway to Ada County, roughly 1,994 flights land at Boise Airport (BOI) each month. Find an awesome deal, lock in your seat and get set to soak up the best of this sensational region.
How much is a plane ticket to Ada County?
In the last seven days, tickets to Ada County varied between €214 and €958. Prices tend to go up over time, so snap up a good deal today.
What is the best time to go to Ada County?
Summer begins June 20 in the Northern Hemisphere, and these warmer months are a fabulous time to head to the major Ada County city of Boise. Average temperatures range between 16ºC and 27ºC throughout this season. The largest crowds can be found here in March, May and August.
What months are the cheapest to book a flight to Ada County?
The best month to purchase budget flights to Ada County is February. Remember that in the U.S, an expensive time to secure a seat is the festive month of December.

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About Ada County

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About Ada County

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