Cheap Flights to Southwest Idaho , ID from CA $93

View CA $93 flight on Tue, Sep. 9, 2025Opens in a new window

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How much is the cheapest flight to Southwest Idaho?

Prices were available within the past 7 days and start at CA $93 for one-way flights and CA $159 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Sat, Aug. 23 - Tue, Aug. 26
SEA
Seattle
BOI
Boise
CA $159 Roundtrip, found 1 day ago
CA $159
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Sat, Aug. 23 from Seattle to Boise, returning Tue, Aug. 26, priced at CA $159 found 1 day ago
Delta
Tue, Sep. 9 - Sat, Sep. 13
SEA
Seattle
BOI
Boise
CA $159 Roundtrip, found 1 day ago
CA $159
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Sep. 9 from Seattle to Boise, returning Sat, Sep. 13, priced at CA $159 found 1 day ago
Hawaiian Airlines
Tue, Sep. 16 - Sat, Sep. 20
SEA
Seattle
BOI
Boise
CA $161 Roundtrip, found 2 hours ago
CA $161
Roundtrip
found 2 hours ago
Select Hawaiian Airlines flight, departing Tue, Sep. 16 from Seattle to Boise, returning Sat, Sep. 20, priced at CA $161 found 2 hours ago
United
Thu, Aug. 21 - Mon, Aug. 25
SEA
Seattle
BOI
Boise
CA $321 Roundtrip, found 4 days ago
CA $321
Roundtrip
found 4 days ago
Select United flight, departing Thu, Aug. 21 from Seattle to Boise, returning Mon, Aug. 25, priced at CA $321 found 4 days ago
American Airlines
Wed, Oct. 22 - Sat, Nov. 8
YYZ
Toronto
BOI
Boise
CA $399 Roundtrip, just found
CA $399
Roundtrip
just found
Select American Airlines flight, departing Wed, Oct. 22 from Toronto to Boise, returning Sat, Nov. 8, priced at CA $399 just found

Find the cheapest month to fly from Columbus (CMH) to Boise (BOI)

October is typically the cheapest month to fly

From CA $220 - CA $736 per traveller.

Graph displaying average flight prices per month

Expedia.ca gives you the best tools to secure great deals on flights to Southwest Idaho. Use our easy and convenient booking engine to browse nonstop flights and convenient departure points every day of the year. Search airfares from the top airlines to book your perfect flight to Southwest Idaho. Whatever your travel needs, you can always rely on Expedia.ca to help you find cheap flights to Southwest Idaho.

Using our booking engine is simple - just type in your points of travel and preferred dates and Expedia.ca does the rest! If your travel times are flexible, you can find even better bargains by adjusting your flight dates. Browse connecting flights to increase your chances of finding even lower fares. Thanks to Expedia's Best Price Guarantee, you can book your Southwest Idaho flights with full confidence knowing that you've found the best deal online.

Expedia.ca makes the booking process easy and stress-free by offering support along the entire way. Our friendly staff is available 24 hours a day to provide assistance and help you book your ticket. Call us toll-free at 1-888-397-3342 to answer any questions that you may have about your trip to Southwest Idaho.

Looking to save even more? Get additional savings by bundling your Southwest Idaho flight with a hotel and/or car rental to create a bargain travel package. Early birds can discover terrific savings by booking in advance while last minute travelers can enjoy great last minute deals. With Expedia.ca, there's no shortage of options to save even more on your Southwest Idaho trip!

Frequently asked questions

How do I find cheap flights to Southwest Idaho that have flexible change policies?
Search for affordable flights to Southwest Idaho, then mark the "No change fee" box underneath the "Flexible change policies" heading. It's that easy. We understand that travel plans change and flexibility matters, so you can book with confidence with Expedia.
Which airlines fly to Southwest Idaho?
Wherever you're planning to head to in Southwest Idaho and whenever you'd like to set off, you'll find your perfect flight with one of these top airlines:

  • Alaska Airlines - 862 flights to or near Southwest Idaho each month, including 810 flights to Boise Airport (BOI) and 52 to Friedman Memorial Airport (SUN) per month.
  • United Airlines - 551 flights to or near Southwest Idaho each month, including 381 flights to Boise Airport (BOI) and 169 to Friedman Memorial Airport (SUN) per month.
  • Delta - 537 flights to or near Southwest Idaho each month, including 442 flights to Boise Airport (BOI) and 95 to Friedman Memorial Airport (SUN) per month.

How can I find cheap tickets to Southwest Idaho?
You'll always nab an amazing deal with Expedia, but our "flexible dates" search function makes it even easier. Enter your preferred travel date, then tick the flexible dates box above to see prices for nearby days. CA $159 was the lowest price for a flight to Southwest Idaho in the last seven days.
How much is a flight to Southwest Idaho?
One-way flights departing from Seattle (SEA) sold for as low as CA $93 in the last seven days. During this time, the cost of a return air ticket to Southwest Idaho ranged between CA $159 and CA $399. If you find a fantastic deal, book fast — these prices don't stick around.
What are the most popular airports to fly into in Southwest Idaho?
Which of these Southwest Idaho airports you'll land at will mostly depend on your chosen airline and final destination in the region:

  • Boise Airport (BOI) - 2,232 flights per month.
  • Friedman Memorial Airport (SUN) - 317 flights per month.

When is the cheapest time to fly to Southwest Idaho?
Fly out on a Tuesday to improve your chances of scoring the cheapest flight to Southwest Idaho. Mondays are usually the next most affordable day to depart. Saturday is normally the most expensive day to fly anywhere.
How much is a plane ticket to Southwest Idaho?
In the last seven days, plane tickets ranged between CA $159 and CA $399. Browse through our amazing deals to Southwest Idaho, make a booking and then start packing!
What are the best things to do in Southwest Idaho?

  • Filled with atmosphere and culture, Boise is the ideal base for your Southwest Idaho vacation. Explore renowned attractions like Boise State University, hit the stores or eat and drink your way around some of this destination's fabulous eateries. What you choose to do is up to you!
  • When deciding what kind of clothing to take on your trip, bear in mind that Boise has a Mediterranean climate. To give you a clearer idea of what to expect when you're there, look up the weather forecast before you set off.
  • Approximately 24 kilometres to the west of Boise, Star also deserves a place on your itinerary. Top sights in this city include Helina Marie's Wine Shop — don't forget to check it out.

What is the best time to go to Southwest Idaho?
Almost anytime is an excellent time to visit Southwest Idaho, with wonderful cities like Boise to discover. If you like to move with the crowd, May, June and July are the most popular months for tourists. The summer season kicks off June 20 here. If you're visiting during this time, take some suncream and a wide-brimmed hat. Average summer temperatures range between 15ºC and 28ºC in Boise.
What months are the cheapest to book a flight to Southwest Idaho?
An inexpensive month to reserve a flight to Southwest Idaho is February, whereas prices are at a premium in December. Keep clear of this month if you're watching your pennies.
Flights to Southwest Idaho information
Destination airport
Boise
Destination airport IATA code
BOI
Destination city name
Boise
Roundtrip price
CA $320

Trending flights to Southwest Idaho

Prices were available within the past 7 days and start at CA $93 for one-way flights and CA $159 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Wed, Oct. 1 - Wed, Oct. 1
YVR
Vancouver
BOI
Boise
CA $321 Roundtrip, found 5 days ago
CA $321
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Wed, Oct. 1 from Vancouver to Boise, returning Wed, Oct. 1, priced at CA $321 found 5 days ago
*Available to Expedia members.