Cheap Flights From Boise (BOI) To Seattle - Tacoma Intl. (SEA)

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Cheapest Flights from Boise (BOI) to Seattle (SEA)

The cheapest flights to Seattle - Tacoma Intl. found within the past 7 days were CA $137 round trip and CA $96 one way. Prices and availability subject to change. Additional terms may apply.

Fri, Jan 23 - Tue, Jan 27
BOI
Boise
SEA
Seattle
CA $137 Roundtrip, found 5 days ago
CA $137
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Fri, Jan 23 from Boise to Seattle, returning Tue, Jan 27, priced at CA $137 found 5 days ago
Fri, Jan 23 - Tue, Jan 27
BOI
Boise
SEA
Seattle
CA $165 Roundtrip, found 5 days ago
CA $165
Roundtrip
found 5 days ago
Select Delta flight, departing Fri, Jan 23 from Boise to Seattle, returning Tue, Jan 27, priced at CA $165 found 5 days ago
Sat, Jan 17 - Mon, Jan 19
BOI
Boise
SEA
Seattle
CA $166 Roundtrip, found 6 days ago
CA $166
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Sat, Jan 17 from Boise to Seattle, returning Mon, Jan 19, priced at CA $166 found 6 days ago
Sat, Jan 17 - Sat, Jan 17
BOI
Boise
SEA
Seattle
CA $186 Roundtrip, found 6 days ago
CA $186
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Sat, Jan 17 from Boise to Seattle, returning Sat, Jan 17, priced at CA $186 found 6 days ago
Fri, Jan 23 - Tue, Jan 27
BOI
Boise
SEA
Seattle
CA $191 Roundtrip, found 5 days ago
CA $191
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Fri, Jan 23 from Boise to Seattle, returning Tue, Jan 27, priced at CA $191 found 5 days ago
Fri, Jan 23 - Tue, Jan 27
BOI
Boise
SEA
Seattle
CA $192 Roundtrip, found 5 days ago
CA $192
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Fri, Jan 23 from Boise to Seattle, returning Tue, Jan 27, priced at CA $192 found 5 days ago
Sat, Jan 17 - Sat, Jan 17
BOI
Boise
SEA
Seattle
CA $194 Roundtrip, found 6 days ago
CA $194
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Sat, Jan 17 from Boise to Seattle, returning Sat, Jan 17, priced at CA $194 found 6 days ago
Fri, Jan 23 - Tue, Jan 27
BOI
Boise
SEA
Seattle
CA $210 Roundtrip, found 5 days ago
CA $210
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Fri, Jan 23 from Boise to Seattle, returning Tue, Jan 27, priced at CA $210 found 5 days ago
Sat, Jan 17 - Sat, Jan 17
BOI
Boise
SEA
Seattle
CA $215 Roundtrip, found 6 days ago
CA $215
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Sat, Jan 17 from Boise to Seattle, returning Sat, Jan 17, priced at CA $215 found 6 days ago
Fri, Jan 23 - Tue, Jan 27
BOI
Boise
SEA
Seattle
CA $219 Roundtrip, found 5 days ago
CA $219
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Fri, Jan 23 from Boise to Seattle, returning Tue, Jan 27, priced at CA $219 found 5 days ago

Frequently asked questions

Are there direct flights from BOI to Seattle - Tacoma Intl. Airport (SEA)?
Sometimes, a trip is all about the journey; other times, the magic is in the destination. If you're eager to get to where you're going fast, multiple airlines operate direct flights from Boise Airport to Sea-Tac Airport, including Alaska Airlines and Delta.
What airlines fly from Boise Airport to Sea-Tac Airport?
If you need to get to Seattle from Boise, there are several airlines advertising direct flights. One of the most well-known is Alaska Airlines (AS), which offers 321 flights on this route each month. You should also pore through the deals on offer from Delta (DL). This airline operates 182 flights each month on the Boise to Seattle route. Compare the two to find your perfect fare.
What is the best day to buy a plane ticket?
Airfares offered on Friday tend to be the cheapest, according to flight demand on Travelocity.ca in 2021. Purchasing your airfares on a Thursday or Saturday can also provide better value, however our advice if you're looking to save money is to avoid booking on a Wednesday or Sunday. Our data shows that those two days have the highest ticket values on average, so keep this in mind if you're browsing flight deals.
What are the cheapest days to fly?
Frequent travellers may already know this, but earlier in the week is often the cheapest time to fly. Flights departing on a Monday are the cheapest of the week. Since flights towards the middle of the week tend to be more popular, this causes the prices to rise. This is why, on average, airfares booked on Travelocity.ca in 2021 were most expensive for Wednesday departures.
How far in advance can you book a flight?
Here's the deal: It is typically possible to start comparing international airfares on Travelocity.ca up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 2-4 weeks prior to their travel dates.*According to flight demand on Travelocity.ca from January to December 2021. Savings are subject to change and may vary depending on selections made.
*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.