Popular airlines from Seattle-Tacoma International Airport (SEA) to Boise Airport (BOI)
Alaska AirlinesAlaska Airlines
DeltaDelta
UnitedUnited
Southwest AirlinesSouthwest Airlines
American AirlinesAmerican Airlines
Frontier AirlinesFrontier Airlines
Hawaiian AirlinesHawaiian Airlines
Today's featured flight deals from Seattle-Tacoma International Airport (SEA) to Boise Airport (BOI)
- Seattle (SEA) to Boise (BOI).Alaska Airlines, nonstop.Departing on Thu, Oct 23 at 8:45am from Seattle, arriving at 11:09am in Boise.Returning on Sun, Nov 2 at 6:28am from Boise, arriving at 7:15am in Seattle.Select Alaska Airlines flight departing on Thu, Oct 23 at 8:45am from Seattle, returning on Sun, Nov 2 at 6:28am from Boise priced at $11860% less than typical$118
- Seattle (SEA) to Boise (BOI).Alaska Airlines, nonstop.Departing on Fri, Oct 24 at 9:30pm from Seattle, arriving at 11:56pm in Boise.Returning on Mon, Nov 3 at 6:28am from Boise, arriving at 7:15am in Seattle.Select Alaska Airlines flight departing on Fri, Oct 24 at 9:30pm from Seattle, returning on Mon, Nov 3 at 6:28am from Boise priced at $11855% less than typical$118
- Seattle (SEA) to Boise (BOI).Alaska Airlines, nonstop.Departing on Thu, Oct 23 at 8:45am from Seattle, arriving at 11:09am in Boise.Returning on Mon, Oct 27 at 4:57pm from Boise, arriving at 5:40pm in Seattle.Select Alaska Airlines flight departing on Thu, Oct 23 at 8:45am from Seattle, returning on Mon, Oct 27 at 4:57pm from Boise priced at $13750% less than typical$137
- Seattle (SEA) to Boise (BOI).Alaska Airlines, nonstop.Departing on Mon, Nov 10 at 10:10am from Seattle, arriving at 12:36pm in Boise.Returning on Sun, Nov 16 at 8:50am from Boise, arriving at 9:28am in Seattle.Select Alaska Airlines flight departing on Mon, Nov 10 at 10:10am from Seattle, returning on Sun, Nov 16 at 8:50am from Boise priced at $9955% less than typical$99
- Seattle (SEA) to Boise (BOI).Alaska Airlines, nonstop.Departing on Sat, Oct 25 at 12:00pm from Seattle, arriving at 2:36pm in Boise.Returning on Tue, Nov 4 at 6:28am from Boise, arriving at 7:15am in Seattle.Select Alaska Airlines flight departing on Sat, Oct 25 at 12:00pm from Seattle, returning on Tue, Nov 4 at 6:28am from Boise priced at $10850% less than typical$108
- Seattle (SEA) to Boise (BOI).Alaska Airlines, nonstop.Departing on Fri, Oct 31 at 1:53pm from Seattle, arriving at 4:17pm in Boise.Returning on Mon, Nov 3 at 8:50pm from Boise, arriving at 9:31pm in Seattle.Select Alaska Airlines flight departing on Fri, Oct 31 at 1:53pm from Seattle, returning on Mon, Nov 3 at 8:50pm from Boise priced at $11845% less than typical$118
- Seattle (SEA) to Boise (BOI).Delta, nonstop.Departing on Fri, Oct 17 at 9:35pm from Seattle, arriving on Sat, Oct 18 at 12:08am in Boise.Returning on Fri, Oct 24 at 7:40am from Boise, arriving at 8:28am in Seattle.Select Delta flight departing on Fri, Oct 17 at 9:35pm from Seattle, returning on Fri, Oct 24 at 7:40am from Boise priced at $21730% less than typical$217
- Seattle (SEA) to Boise (BOI).Delta, nonstop.Departing on Fri, Oct 17 at 9:35pm from Seattle, arriving on Sat, Oct 18 at 12:08am in Boise.Returning on Fri, Oct 24 at 4:46pm from Boise, arriving at 5:29pm in Seattle.Select Delta flight departing on Fri, Oct 17 at 9:35pm from Seattle, returning on Fri, Oct 24 at 4:46pm from Boise priced at $21730% less than typical$217
- Seattle (SEA) to Boise (BOI).Delta, nonstop.Departing on Wed, Oct 22 at 4:20pm from Seattle, arriving at 6:51pm in Boise.Returning on Sun, Oct 26 at 7:40am from Boise, arriving at 8:28am in Seattle.Select Delta flight departing on Wed, Oct 22 at 4:20pm from Seattle, returning on Sun, Oct 26 at 7:40am from Boise priced at $21725% less than typical$217
Cheap Flights from Seattle to Boise (SEA-BOI)
Prices were available within the past 7 days and start at $68 for one-way flights and $99 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.
Find the cheapest month to fly from Seattle (SEA) to Boise (BOI)
January is typically the cheapest month to fly
Frequently asked questions
Travel information
Travel information
Origin airport | Seattle - Tacoma Intl. |
Destination airport | Boise |
Airlines serving | Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, United |
Roundtrip price | $99 |
Distance | 397 mi |
Average flight time | 2 hours 30 mins |
Book with confidence
Book with confidence
Seattle to Boise Flights
The cheapest times to fly from Seattle to Boise
On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Seattle to Boise are during the month of December. You can find some of the cheapest flights from Seattle to Boise with Expedia's search tool and vast selection of airlines.
The best time to book a flight from Seattle to Boise
Sunday is one of the best days to book for cheap flights from Seattle to Boise: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.
How to find cheap round-trip tickets from Seattle to Boise
Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Seattle to Boise in 2025. You can also book with separate airlines for your outbound and return journeys, from $68 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.
Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Seattle to Boise flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.
You could also save big by booking one of Expedia's vacation packages. Bundling together your Seattle to Boise airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.
*Terms apply.
Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.
Explore a world of travel with Expedia
Explore a world of travel with Expedia
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