$69 Cheap Flights from Boise (BOI) to Seattle (SEA)

View $69 flight on Sat, Jun 7, 2025Opens in a new window

Popular airlines from Boise Airport (BOI) to Seattle-Tacoma International Airport (SEA)

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Find available prices by choosing your travel dates.

Cheap Flights from Boise to Seattle (BOI-SEA)

Prices were available within the past 7 days and start at $69 for one-way flights and $137 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Bargain Flight
Sat, Jun 14 - Tue, Jun 17
BOI
Boise
SEA
Seattle
$137 Roundtrip, found 4 hours ago
$137
Roundtrip
found 4 hours ago
Select Bargain Flight flight, departing Sat, Jun 14 from Boise to Seattle, returning Tue, Jun 17, priced at $137 found 4 hours ago
Alaska Airlines
Sat, May 17 - Wed, May 21
BOI
Boise
SEA
Seattle
$137 Roundtrip, just found
$137
Roundtrip
just found
Select Alaska Airlines flight, departing Sat, May 17 from Boise to Seattle, returning Wed, May 21, priced at $137 just found
Delta
Sat, May 17 - Wed, May 21
BOI
Boise
SEA
Seattle
$137 Roundtrip, just found
$137
Roundtrip
just found
Select Delta flight, departing Sat, May 17 from Boise to Seattle, returning Wed, May 21, priced at $137 just found
Alaska Airlines
Sat, May 17 - Wed, May 21
BOI
Boise
SEA
Seattle
$139 Roundtrip, just found
$139
Roundtrip
just found
Select Alaska Airlines flight, departing Sat, May 17 from Boise to Seattle, returning Wed, May 21, priced at $139 just found
Bargain Flight
Fri, May 16 - Sat, May 24
BOI
Boise
SEA
Seattle
$147 Roundtrip, just found
$147
Roundtrip
just found
Select Bargain Flight flight, departing Fri, May 16 from Boise to Seattle, returning Sat, May 24, priced at $147 just found
Alaska Airlines
Sat, Jun 7 - Sun, Jun 8
BOI
Boise
SEA
Seattle
$147 Roundtrip, just found
$147
Roundtrip
just found
Select Alaska Airlines flight, departing Sat, Jun 7 from Boise to Seattle, returning Sun, Jun 8, priced at $147 just found
Delta
Thu, Jun 12 - Sat, Jun 14
BOI
Boise
SEA
Seattle
$148 Roundtrip, just found
$148
Roundtrip
just found
Select Delta flight, departing Thu, Jun 12 from Boise to Seattle, returning Sat, Jun 14, priced at $148 just found
Delta
Sat, Jun 7 - Sun, Jun 8
BOI
Boise
SEA
Seattle
$149 Roundtrip, just found
$149
Roundtrip
just found
Select Delta flight, departing Sat, Jun 7 from Boise to Seattle, returning Sun, Jun 8, priced at $149 just found
Spirit Airlines
Mon, Jun 9 - Wed, Jun 11
BOI
Boise
SEA
Seattle
$151 Roundtrip, found 16 hours ago
$151
Roundtrip
found 16 hours ago
Select Spirit Airlines flight, departing Mon, Jun 9 from Boise to Seattle, returning Wed, Jun 11, priced at $151 found 16 hours ago
Southwest Airlines
Tue, May 20 - Wed, May 28
BOI
Boise
SEA
Seattle
$153 Roundtrip, found 3 hours ago
$153
Roundtrip
found 3 hours ago
Select Southwest Airlines flight, departing Tue, May 20 from Boise to Seattle, returning Wed, May 28, priced at $153 found 3 hours ago

Frequently asked questions

How much does a flight from Boise Airport (BOI) to Seattle - Tacoma Intl. Airport (SEA) cost?
You can land cheap return tickets from Boise Airport (BOI) to Seattle - Tacoma Intl. Airport (SEA) starting from $131. Book your seat and set off on your next adventure. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Alaska Airlines flight leaving BOI on May 14 2025 and touching down at SEA. The price was last updated on April 24 2025 and has not changed since.
What is the cheapest month to fly from BOI to SEA?
The cheapest flights from BOI to SEA are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Boise Airport (BOI) to Seattle - Tacoma Intl. Airport (SEA)?
You can fly nonstop from Boise Airport (BOI) to Seattle - Tacoma Intl. Airport (SEA) on an Alaska Airlines flight.
What is the cheapest airline that flies from BOI to SEA?
At the moment, the cheapest carrier operating one-way flights from BOI to SEA is Alaska Airlines. You can jet off on this route from $69. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from BOI on June 17 2025. Prices were last updated on April 24 2025 and have not changed since.
How many flights per day from Boise Airport (BOI) to Seattle - Tacoma Intl. Airport (SEA)?
With an average of 14 nonstop flights that operate from Boise Airport (BOI) to Seattle - Tacoma Intl. Airport (SEA) daily, you’ll be soaring through the skies in no time.
What are the most popular departure times for flights from Boise Airport (BOI) to Seattle - Tacoma Intl. Airport (SEA)?
More passengers fly between BOI and SEA at 9 AM than at any other time of day. Looking for a quieter experience? Pick a flight outside the busiest times and there’s a chance you’ll save on your fare as well.
What day of the week has the most flights from BOI to SEA?
Travel on a Friday if you’re searching for the largest selection of flights from Boise Airport (BOI) to Seattle - Tacoma Intl. Airport (SEA).
What is the earliest flight from Boise Airport (BOI) to Seattle - Tacoma Intl. Airport (SEA)?
The earliest flight departing from Boise Airport (BOI) is at around 5:45AM UTC-7. Catch this flight and you’ll reach Seattle - Tacoma Intl. Airport (SEA) at approximately 6:38AM UTC-8. The total time in the air is 1h 53m.
How long does it take to fly from Boise Airport (BOI) to Seattle - Tacoma Intl. Airport (SEA)?
The average flight time from BOI to SEA is 1 hour and 46 minutes, covering a total distance of 400 mi.
What airline has the least delays from BOI to SEA?
With 100% of journeys typically landing on time, Air France has the best on-time performance for nonstop flights from Boise Airport (BOI) to Seattle - Tacoma Intl. Airport (SEA). To check your flight status and get notified about any changes, simply head to the Expedia App.
What is the best time to fly from Boise Airport (BOI) to Seattle - Tacoma Intl. Airport (SEA)?
Choose a flight from Boise Airport (BOI) to Seattle - Tacoma Intl. Airport (SEA) that takes off before 3 PM to reduce the risk of cancellations. Later departures have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
What airports do you fly into for Seattle from Boise Airport (BOI)?
Seattle - Tacoma Intl. Airport (SEA) is the only airport in Seattle with direct flights from Boise Airport (BOI). Consider the options and discover cheap fares on Expedia.
Is it cheaper to buy a plane ticket from Boise Airport (BOI) to Seattle - Tacoma Intl. Airport (SEA) last-minute?
Booking your ticket from BOI to SEA just before your journey is generally more expensive. However, if there’s some wiggle room with your departure dates and times, you could snag a cheap last-minute fare.
Is it cheaper to book a BOI to SEA flight and hotel package?
You can save money by booking a BOI to SEA flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it’s simple to manage everything in one convenient place. After choosing your preferred flights and accommodations, you can add extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from Boise Airport (BOI) to Seattle - Tacoma Intl. Airport (SEA)?
In most instances, you can cancel or reschedule your BOI to SEA flight. However, additional charges may apply, especially if you booked over 24 hours ago. Check your itinerary for the airline’s guidelines and fees on flight changes, or if you’d like further details, go to our Customer Service portal.
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