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$65+ 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 1/10. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SEA
Jan 9 — Jan 161
Fri 1/9
Fri 1/16
1 adult, Economy
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Cheapflights Tip: The best prices from Boise Air Term. Gowen Fld to Seattle/Tacoma Intl are usually found in January or February, booked 77 days in advance, depart on a Friday or Thursday and return on a Saturday

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 December 10, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/9. 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.
Wed 12/319:50 pmBOI - SEA
Nonstop1h 45mAlaska Airlines
Fri 1/23:43 pmSEA - BOI
Nonstop1h 22mAlaska Airlines
Deal found 12/9$146
This Delta deal was found by Cheapflights users on 12/8. 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 12/313:30 pmBOI - SEA
Nonstop1h 50mDelta
Sun 1/49:35 pmSEA - BOI
Nonstop1h 29mDelta
Deal found 12/8$147
This Alaska Airlines deal was found by Cheapflights users on 12/9. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3010:47 amBOI - SEA
Nonstop1h 43mAlaska Airlines
Sun 1/411:22 amSEA - BOI
Nonstop1h 27mAlaska Airlines
Deal found 12/9$167
This Delta deal was found by Cheapflights users on 12/9. 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.
Mon 12/295:40 amBOI - SEA
Nonstop1h 57mDelta
Thu 1/14:40 pmSEA - BOI
Nonstop1h 27mDelta
Deal found 12/9$217
This Kiwi.com deal was found by Cheapflights users on 12/9. 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.
Wed 12/315:42 pmBOI - SEA
1 stop4h 30mAlaska Airlines
Sun 1/41:44 pmSEA - BOI
Nonstop1h 22mAlaska Airlines
Deal found 12/9$218
This Alaska Airlines deal was found by Cheapflights users on 12/7. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2610:47 amBOI - SEA
Nonstop1h 43mAlaska Airlines
Tue 12/309:15 pmSEA - BOI
Nonstop1h 22mAlaska Airlines
Deal found 12/7$247
This KAYAK deal was found by Cheapflights users on 12/8. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/174:20 pmBOI - SEA
1 stop5h 06mAlaska Airlines
Tue 1/61:44 pmSEA - BOI
Nonstop1h 22mAlaska Airlines
Deal found 12/8$248
This Alaska Airlines deal was found by Cheapflights users on 12/8. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2910:47 pmBOI - SEA
1 stop9h 10mAlaska Airlines
Thu 1/18:51 amSEA - BOI
Nonstop1h 22mAlaska Airlines
Deal found 12/8$250
This Alaska Airlines deal was found by Cheapflights users on 12/9. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2411:53 amBOI - SEA
1 stop22h 26mAlaska Airlines
Thu 12/2511:22 amSEA - BOI
Nonstop1h 27mAlaska Airlines
Deal found 12/9$255

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 December 10, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$99
(Delta)

One-way from

$65
(Kiwi.com)

Popular in

March

Cheapest in

January

Average price

$177

Good round-trip deal

$240 or less

Good one-way deal

$157 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
Highest demand for flights based on searches. 0% potential increase in price ($0 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 0% potential price decrease ($2 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 December 10, 2025.
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

Thu 1/8

1:40 pm-2:35 pm

Nonstop1h 55m

Seattle/Tacoma Intl

Sat 1/10

7:30 pm-9:58 pm

Nonstop1h 28m

$99

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Fri 1/23

5:15 pm-6:08 pm

Nonstop1h 53m

Seattle/Tacoma Intl

Sun 1/25

10:25 am-1:00 pm

Nonstop1h 35m

$99

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Wed 1/7

7:25 am-8:20 am

Nonstop1h 55m

Seattle/Tacoma Intl

Wed 1/14

3:59 pm-6:28 pm

Nonstop1h 29m

$99

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Sat 2/28

8:50 am-9:46 am

Nonstop1h 56m

Seattle/Tacoma Intl

Mon 3/9

10:35 am-1:06 pm

Nonstop1h 31m

$99

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Fri 2/6

7:25 am-8:20 am

Nonstop1h 55m

Seattle/Tacoma Intl

Sun 2/8

10:20 am-12:55 pm

Nonstop1h 35m

$99

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Mon 1/5

9:15 am-10:14 am

Nonstop1h 59m

Seattle/Tacoma Intl

Mon 1/12

1:50 pm-4:17 pm

Nonstop1h 27m

$99

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Tue 1/6

5:15 pm-6:08 pm

Nonstop1h 53m

Seattle/Tacoma Intl

Tue 1/13

1:50 pm-4:17 pm

Nonstop1h 27m

$137

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Tue 1/27

7:25 am-8:20 am

Nonstop1h 55m

Seattle/Tacoma Intl

Thu 1/29

3:59 pm-6:28 pm

Nonstop1h 29m

$139

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Thu 1/1

9:50 pm-10:35 pm

Nonstop1h 45m

Seattle/Tacoma Intl

Sat 1/3

8:51 am-11:13 am

Nonstop1h 22m

$147

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Sun 1/11

9:15 am-10:14 am

Nonstop1h 59m

Seattle/Tacoma Intl

Sat 1/17

7:30 pm-9:58 pm

Nonstop1h 28m

$147

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/9

Showing 1-10 of 21 results
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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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
Trip.comPrice Accuracy2 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
JustAirTicketPrice Accuracy-Trust Score*1 star

*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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Boise-Seattle flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 December 5, 2025.

Booking 65 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 December 10, 2025.

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 28% 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 December 6, 2025.

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 afternoons 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 December 10, 2025.
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
11,423 reviews

Overall

8.0

Crew

8.5

Boarding

8.1

Food

7.1

Entertainment

7.0

Comfort

7.8

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
11,423 reviews
Alaska Airlines
8.0
Very good
11,423 reviews

Overall

8.0

Crew

8.5

Boarding

8.1

Food

7.1

Entertainment

7.0

Comfort

7.8

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
8,007 reviews
Alaska Airlines
8.0
Very good
11,423 reviews

Overall

8.0

Crew

8.5

Boarding

8.1

Food

7.1

Entertainment

7.0

Comfort

7.8

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
2,818 reviews
Alaska Airlines
8.0
Very good
11,423 reviews

Overall

8.0

Crew

8.5

Boarding

8.1

Food

7.1

Entertainment

7.0

Comfort

7.8

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 33m for a nonstop flight. There are 48 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, 87 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 $99, Delta can have you in Seattle from Boise in 1h 55m. 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 $116 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. Delta flights start at $68 while deals on Alaska Airlines start at $69 one-way.

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

    Consider Virgin Atlantic (95%), Aeromexico (91%) or Delta (90%) 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 $1,051 for a flight from Boise to Seattle. The cheapest flight overall is $89 while the most popular route, (Boise Air Term. Gowen Fld - Seattle/Tacoma Intl) is currently priced at $99.

  • 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
Olympia
Ocean Shores
Edmonds
Lynnwood
Renton
Puyallup
Kirkland
Tukwila
Kent
Cle Elum
Marysville
Leavenworth
Fife
Aberdeen
Shoreline
Centralia
Federal Way

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 December 10, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$100Average$197FlexibilityNo cancel feeOn-time75%
DeltaCheapest$117Average$198FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$117Average$197FlexibilityNo cancel feeOn-time85%

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