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$67+ Cheap flights from Boise to Seattle (BOI - SEA)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/27. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SEA
Feb 27 — Mar 61
Fri 2/27
Fri 3/6
1 adult, Economy
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Find cheap flights from Boise to Seattle with Cheapflights

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Cheapflights Tip: The best prices from Boise Air Term. Gowen Fld to Seattle/Tacoma Intl are usually found in February or December, booked 48 days in advance, depart on a Friday or Thursday and return on a Thursday

Cheap flight deals from Boise to Seattle

Cheapest flights from Boise to Seattle
Explore the most affordable flight options available from Boise to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 28, 2026.

This SmartFares deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/288:30 am
BOI
-
SEA
Nonstop1h 48m
Alaska Airlines
Sun 3/18:10 pm
SEA
-
BOI
Nonstop1h 30m
Alaska Airlines
Deal found 1/28$129
This Kiwi.com deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/2612:38 pm
BOI
-
SEA
1 stop23h 17m
Frontier
Sat 2/281:16 pm
SEA
-
BOI
1 stop20h 55m
Frontier
Deal found 1/27$134
This Delta deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/257:30 am
BOI
-
SEA
Nonstop1h 55m
Delta
Wed 3/410:40 am
SEA
-
BOI
Nonstop1h 31m
Delta
Deal found 1/27$137
This Kiwi.com deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/284:30 pm
BOI
-
SEA
1 stop6h 12m
Hawaiian Airlines
Sun 3/18:10 pm
SEA
-
BOI
Nonstop1h 30m
Hawaiian Airlines
Deal found 1/28$141
This Delta deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/197:30 am
BOI
-
SEA
Nonstop1h 55m
Delta
Sat 2/2110:40 am
SEA
-
BOI
Nonstop1h 31m
Delta
Deal found 1/26$147
This Southwest deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/245:25 pm
BOI
-
SEA
1 stop5h 25m
Southwest
Tue 3/312:45 pm
SEA
-
BOI
1 stop7h 00m
Southwest
Deal found 1/27$151
This Southwest deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/253:35 pm
BOI
-
SEA
1 stop8h 00m
Southwest
Wed 3/411:20 am
SEA
-
BOI
1 stop9h 55m
Southwest
Deal found 1/27$156
This Delta deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/275:15 pm
BOI
-
SEA
Nonstop1h 51m
Delta
Sun 3/17:15 am
SEA
-
BOI
Nonstop1h 35m
Delta
Deal found 1/27$157
This Travelocity deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/258:30 am
BOI
-
SEA
Nonstop1h 48m
Alaska Airlines
Wed 3/49:54 am
SEA
-
BOI
1 stop4h 56m
Alaska Airlines
Deal found 1/27$167
This Southwest deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/2812:50 pm
BOI
-
SEA
2 stops11h 00m
Southwest
Mon 3/26:05 am
SEA
-
BOI
1 stop6h 10m
Southwest
Deal found 1/26$172
This CheapOair deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/1912:36 pm
BOI
-
SEA
1 stop23h 19m
Frontier
Sat 2/211:16 pm
SEA
-
BOI
1 stop20h 55m
Frontier
Deal found 1/26$176
This Expedia deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/234:30 pm
BOI
-
SEA
1 stop4h 53m
Alaska Airlines
Tue 2/243:12 pm
SEA
-
BOI
Nonstop1h 23m
Alaska Airlines
Deal found 1/26$177

Find flight deals from Boise to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Boise (BOI) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$129
(SmartFares)

One-way from

$67
(Kiwi.com)

Popular in

March

Cheapest in

February

Average price

$168

Good round-trip deal

$278 or less

Good one-way deal

$139 or less
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Seattle/Tacoma Intl flights.
Search Deals
From Boise Air Term. Gowen Fld to Seattle/Tacoma Intl
Search Deals
One-way flight from Boise Air Term. Gowen Fld to Seattle/Tacoma Intl
Search Deals
High demand for flights, 1% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($3 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Boise Air Term. Gowen Fld to Seattle/Tacoma Intl.
Search Deals
Price to beat on a one-way flight from Boise Air Term. Gowen Fld to Seattle/Tacoma Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boise to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 28, 2026.
Use the filters below to find and compare flights from Boise to Seattle that are best for you.

Fly from

Boise

Fly to

Seattle

Route

Depart

Return

Price

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Wed 2/25

10:41 am-11:35 am

Nonstop1h 54m

Seattle/Tacoma Intl

Wed 3/4

3:55 pm-6:22 pm

Nonstop1h 27m

$137

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Wed 3/4

5:15 pm-6:06 pm

Nonstop1h 51m

Seattle/Tacoma Intl

Tue 3/10

9:20 pm-11:44 pm

Nonstop1h 24m

$137

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Wed 4/22

1:52 pm-2:40 pm

Nonstop1h 48m

Seattle/Tacoma Intl

Sun 4/26

7:20 am-10:01 am

Nonstop1h 41m

$147

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Wed 3/11

7:30 pm-8:16 pm

Nonstop1h 46m

Seattle/Tacoma Intl

Sun 3/15

10:35 am-1:05 pm

Nonstop1h 30m

$147

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Wed 2/25

5:25 pm-9:50 pm

1 stop5h 25m

Seattle/Tacoma Intl

Wed 3/4

11:20 am-10:15 pm

1 stop9h 55m

$156

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Wed 3/4

10:45 am-3:40 pm

1 stop5h 55m

Seattle/Tacoma Intl

Tue 3/10

7:00 am-5:20 pm

2 stops9h 20m

$156

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Thu 2/19

6:00 pm-6:38 pm

Nonstop1h 38m

Seattle/Tacoma Intl

Sun 2/22

7:10 am-9:40 am

Nonstop1h 30m

$157

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Thu 3/5

7:15 pm-8:11 pm

Nonstop1h 56m

Seattle/Tacoma Intl

Sun 3/8

7:15 am-9:54 am

Nonstop1h 39m

$157

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Fri 2/27

7:30 am-8:25 am

Nonstop1h 55m

Seattle/Tacoma Intl

Sun 3/1

7:15 am-9:50 am

Nonstop1h 35m

$157

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Wed 2/25

6:05 am-12:20 pm

1 stop7h 15m

$76

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 18 results
1
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Compare providers for flights from Boise to Seattle

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boise to Seattle in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*2 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
JustAirTicketPrice Accuracy-Trust Score*1 star
Trip.comPrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Boise-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boise-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boise-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boise-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boise-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Boise to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Boise with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Boise to Seattle

How far ahead should I book a flight from Boise to Seattle?

Use this chart to determine the optimal time to book a round-trip flight from Boise to Seattle. Price data was last updated on January 23, 2026.

Booking 48 days in advance of your planned departure date is, on average, the best time to get cheap flights from Boise to Seattle. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Boise to Seattle?

Currently, January is the cheapest month in which you can book a flight from Boise to Seattle (average of $99). Flying from Boise to Seattle in July is currently the most expensive (average of $197). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BOI to SEA?

Find hourly flight availability from Boise to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 28, 2026.

When flying from Boise to Seattle, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 27% versus a flight in the afternoon.

What is the cheapest day to fly from Boise to Seattle?

Use this chart to determine the cheapest time to fly round-trip from Boise to Seattle. Price data was last updated on January 24, 2026.

Travelers seeking maximum savings on their Boise to Seattle flight should consider departing on Friday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated January 28, 2026.
Get a feel of what it's like to fly with Alaska Airlines, Delta, and Hawaiian Airlines from Boise to Seattle by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,799 reviews

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.0

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
Alaska Airlines
8.0
Very good
11,799 reviews
Alaska Airlines
8.0
Very good
11,799 reviews

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.0

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
Delta
7.9
Good
8,121 reviews
Alaska Airlines
8.0
Very good
11,799 reviews

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.0

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
Hawaiian Airlines
7.8
Good
2,829 reviews
Alaska Airlines
8.0
Very good
11,799 reviews

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.0

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.

Related info for your journey

Find useful and relevant information for your journey from Boise to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Boise to Seattle?

    If you book a flight from Boise to Seattle, you will be flying from Air Term. Gowen Fld to Seattle/Tacoma Intl. Flights to Seattle/Tacoma Intl (SEA) from Boise Air Term. Gowen Fld (BOI) take 1h 36m for a nonstop flight. There are 44 flights from Air Term. Gowen Fld to Seattle per day from 3 airlines.

  • How popular is this Boise to Seattle flight route?

    Within the past month, 65 users have taken a look at flights from Boise Air Term. Gowen Fld to Seattle/Tacoma Intl.

  • How long is the flight from Boise to Seattle?

    For as low as $137, Delta can have you in Seattle from Boise in 1h 54m. The distance from Boise to Seattle is about 398 mi. Most flights are nonstop.

  • What are the cheapest airlines flying from Boise to Seattle round-trip?

    Currently priced at $99, Alaska Airlines will fly you from Boise to Seattle and back. In addition to Alaska Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and Hawaiian Airlines - these airlines can fly you to your destination from $99 and $117, respectively. Alaska Airlines is 47% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Boise to Seattle one-way?

    To fly one-way, consider booking your trip with Hawaiian Airlines, which is currently one of the cheapest options available, starting at $68. Alaska Airlines flights start at $69 while deals on Delta start at $69 one-way.

  • What are the most reliable airlines from Boise to Seattle?

    Consider Air France (93%), Virgin Atlantic (90%) or Delta (88%) when booking your flight. These represent the most reliable airlines when flying from Boise to Seattle.

  • What are the cheapest flights from Boise to Seattle?

    On average you can expect to pay $709 for a flight from Boise to Seattle. The cheapest flight overall is $69 while the most popular route, (Boise Air Term. Gowen Fld - Seattle/Tacoma Intl) is currently priced at $137.

  • Can I find deals for flights from Boise to Seattle that include hotel bookings?

    Yes. In addition to deals on Boise to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boise to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boise to Seattle.

  • Can I find deals for business class flights from Boise to Seattle?

    Yes. Cheapflights offers flight deals from Boise to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Boise to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Boise to Seattle (average of $99). Flying from Boise to Seattle in July is currently the most expensive (average of $197). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
SeaTac
Lakewood
Ocean Shores
Olympia
Lynnwood
Lacey
Edmonds
Renton
Puyallup
Kirkland
Kent
Tukwila
Fife
Aberdeen
Shoreline
Marysville
Centralia
Federal Way
Chehalis

Browse thousands of different options on Cheapflights for your next trip

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Top 3 airlines flying from Boise to Seattle

Discover the top 3 airlines that operate flights from Boise to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$99Average$197FlexibilityNo cancel feeOn-time75%
DeltaCheapest$99Average$197FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$117Average$197FlexibilityNo cancel feeOn-time85%

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