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$56+ Cheap flights from Seattle to Boise (SEA - BOI)

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 1/14. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BOI
Nov 19 — Nov 261
Wed 11/19
Wed 11/26
1 adult, Economy
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Boise Air Term. Gowen Fld are usually found in January or April, booked 62 days in advance, depart on a Saturday or Tuesday and return on a Friday

Find flight deals from Seattle to Boise

Cheapest flights from Seattle to Boise
Explore the most affordable flight options available from Seattle to Boise. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 20, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 10/18. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1512:39 pmSEA - BOI
Nonstop1h 33mAlaska Airlines
Tue 11/1810:05 amBOI - SEA
Nonstop1h 35mAlaska Airlines
Deal found 10/18$116
This Delta deal was found by Cheapflights users on 10/19. 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 11/269:35 pmSEA - BOI
Nonstop1h 32mDelta
Tue 12/25:20 amBOI - SEA
Nonstop2h 02mDelta
Deal found 10/19$117
This Kiwi.com deal was found by Cheapflights users on 10/19. 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 11/157:55 amSEA - BOI
Nonstop1h 34mHawaiian Airlines
Sun 11/166:05 pmBOI - SEA
Nonstop1h 40mHawaiian Airlines
Deal found 10/19$123
This Cheapflightsfares deal was found by Cheapflights users on 10/18. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/69:28 pmSEA - BOI
Nonstop1h 22mAlaska Airlines
Mon 12/83:39 pmBOI - SEA
Nonstop1h 40mAlaska Airlines
Deal found 10/18$126
This Delta deal was found by Cheapflights users on 10/19. 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.
Sat 11/151:30 pmSEA - BOI
Nonstop1h 35mDelta
Mon 11/174:45 pmBOI - SEA
Nonstop1h 40mDelta
Deal found 10/19$127
This Kiwi.com deal was found by Cheapflights users on 10/20. 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 12/41:53 pmSEA - BOI
Nonstop1h 23mHawaiian Airlines
Thu 12/113:39 pmBOI - SEA
Nonstop1h 40mHawaiian Airlines
Deal found 10/20$130
This Kissandfly.com deal was found by Cheapflights users on 10/19. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/31:53 pmSEA - BOI
Nonstop1h 23mHawaiian Airlines
Wed 12/101:22 pmBOI - SEA
1 stop3h 25mHawaiian Airlines
Deal found 10/19$133
This Alaska Airlines deal was found by Cheapflights users on 10/19. 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 11/124:45 pmSEA - BOI
1 stop6h 14mAlaska Airlines
Sat 11/156:45 pmBOI - SEA
1 stop3h 10mAlaska Airlines
Deal found 10/19$136
This Alaska Airlines deal was found by Cheapflights users on 10/19. 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 11/147:53 pmSEA - BOI
Nonstop1h 27mAlaska Airlines
Mon 11/176:28 amBOI - SEA
Nonstop1h 47mAlaska Airlines
Deal found 10/19$137
This Southwest deal was found by Cheapflights users on 10/20. 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 12/35:15 amSEA - BOI
1 stop7h 50mSouthwest
Mon 12/82:30 pmBOI - SEA
1 stop6h 15mSouthwest
Deal found 10/20$138

Cheap flight deals from Seattle to Boise

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Boise (BOI). 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 October 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$116
(Cheapflightsfares)

One-way from

$56
(Southwest)

Popular in

December

Cheapest in

January

Average price

$256

Good round-trip deal

$144 or less

Good one-way deal

$78 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-Boise Air Term. Gowen Fld flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Boise Air Term. Gowen Fld flights.
Search Deals
From Seattle/Tacoma Intl to Boise Air Term. Gowen Fld
Search Deals
One-way flight from Seattle/Tacoma Intl to Boise Air Term. Gowen Fld
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($8 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals
Price to beat on a round-trip flight from Seattle/Tacoma Intl to Boise Air Term. Gowen Fld.
Search Deals
Price to beat on a one-way flight from Seattle/Tacoma Intl to Boise Air Term. Gowen Fld.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Boise 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 October 20, 2025.
Use the filters below to find and compare flights from Seattle to Boise that are best for you.

Fly from

Seattle

Fly to

Boise

Route

Depart

Return

Price

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Tue 11/25

9:35 pm-12:07 am

Nonstop1h 32m

Boise Air Term. Gowen Fld

Mon 12/1

5:20 am-6:18 am

Nonstop1h 58m

$127

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Fri 11/28

8:11 am-10:45 am

Nonstop1h 34m

Boise Air Term. Gowen Fld

Wed 1/7

1:55 pm-2:39 pm

Nonstop1h 44m

$127

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Mon 11/10

7:45 pm-10:22 pm

Nonstop1h 37m

Boise Air Term. Gowen Fld

Sat 11/15

1:50 pm-2:42 pm

Nonstop1h 52m

$127

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Fri 12/26

9:15 pm-11:37 pm

Nonstop1h 22m

Boise Air Term. Gowen Fld

Fri 1/9

1:55 pm-2:39 pm

Nonstop1h 44m

$137

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Fri 11/14

10:35 am-1:10 pm

Nonstop1h 35m

Boise Air Term. Gowen Fld

Sun 11/16

1:50 pm-2:42 pm

Nonstop1h 52m

$137

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Fri 11/14

7:53 pm-10:20 pm

Nonstop1h 27m

Boise Air Term. Gowen Fld

Mon 11/17

6:28 am-7:15 am

Nonstop1h 47m

$137

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Fri 12/26

3:00 pm-5:27 pm

Nonstop1h 27m

Boise Air Term. Gowen Fld

Fri 1/9

7:30 am-8:18 am

Nonstop1h 48m

$137

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Thu 1/15

11:35 am-5:01 pm

1 stop4h 26m

Boise Air Term. Gowen Fld

Tue 1/20

4:04 pm-6:46 pm

1 stop3h 42m

$146

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Sat 12/27

7:45 am-10:20 am

Nonstop1h 35m

Boise Air Term. Gowen Fld

Tue 12/30

5:40 am-6:37 am

Nonstop1h 57m

$147

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Fri 12/26

11:35 am-7:15 pm

1 stop6h 40m

Boise Air Term. Gowen Fld

Sat 1/10

6:00 am-11:05 am

1 stop6h 05m

$154

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/20

Showing 1-10 of 18 results
1
2

Compare providers for flights from Seattle to Boise

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 Seattle to Boise in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*1 star
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
Trip.comPrice Accuracy2 starsTrust 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 Seattle-Boise flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Boise flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Boise flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Boise 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 Seattle-Boise 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 Seattle to Boise

Have a flexible travel schedule? Discover the best time to fly to Boise from Seattle 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 Seattle to Boise

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

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Boise. Price data was last updated on October 17, 2025.

Booking 62 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Boise. 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 Seattle to Boise?

Currently, January is the cheapest month in which you can book a flight from Seattle to Boise (average of $77). Flying from Seattle to Boise in July is currently the most expensive (average of $175). 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 SEA to BOI?

Find hourly flight availability from Seattle to Boise. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 20, 2025.

It’s typically best to fly out from Seattle to Boise in the afternoon. Doing so could potentially save you 6% on the flight price compared to flying at noon, which is usually more expensive.

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

Use this chart to determine the cheapest time to fly round-trip from Seattle to Boise. Price data was last updated on October 19, 2025.

Travelers seeking maximum savings on their Seattle to Boise flight should consider departing on Thursday 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 Boise

Get insights into the airlines that provide service to Boise. 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 Boise. Reviews last updated October 20, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Delta, and Hawaiian Airlines from Seattle to Boise to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,134 reviews

Comfort

7.8

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Alaska Airlines
8.0
Very good
11,134 reviews
Alaska Airlines
8.0
Very good
11,134 reviews

Comfort

7.8

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Delta
7.9
Good
7,978 reviews
Alaska Airlines
8.0
Very good
11,134 reviews

Comfort

7.8

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Hawaiian Airlines
7.8
Good
2,785 reviews
Alaska Airlines
8.0
Very good
11,134 reviews

Comfort

7.8

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Boise. 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 Seattle to Boise?

    To fly from Seattle to Boise, you need to book a flight from Seattle/Tacoma Intl (SEA) to Air Term. Gowen Fld (BOI). Nonstop flights to Boise Air Term. Gowen Fld from Seattle/Tacoma Intl take 1h 24m on average. When it comes time to book airfare, you have a few options: there are 55 outbound flights from Seattle/Tacoma Intl to Air Term. Gowen Fld offered by 3 different airlines.

  • How popular is this Seattle to Boise flight route?

    Flights from Seattle/Tacoma Intl to Boise Air Term. Gowen Fld have been viewed 14 times in the past calendar month.

  • How long is the flight from Seattle to Boise?

    For as low as $127, Delta can have you in Boise from Seattle in 1h 32m. There are 398 mi between Seattle and Boise. Most flights are nonstop.

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

    Our cheapest airline available from Seattle to Boise is Delta. Our recent data shows that you can find tickets from as low as $97 on this airline. Additional options worth looking into are Hawaiian Airlines and Alaska Airlines, starting at $117 and $127 round-trip. Users have found that Delta is 54% cheaper than the other options available to this destination.

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

    Before booking your flight to Boise from Seattle, check out the most reliable airlines to get you to your destination on time: Air France (99%), Virgin Atlantic (95%), KLM( 95%).

  • What are the cheapest flights from Seattle to Boise?

    Looking for the cheapest flight from Seattle to Boise? While on average our users pay $190, our data indicates the cheapest price to be $58. The most popular route (Seattle/Tacoma Intl - Boise Air Term. Gowen Fld), is priced around $117.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Seattle to Boise 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 Seattle to Boise?

    Currently, January is the cheapest month in which you can book a flight from Seattle to Boise (average of $77). Flying from Seattle to Boise in July is currently the most expensive (average of $175). 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 Boise?

Book flights to Boise if you plan to visit one of these locations
Ontario
Meridian
Nampa
Caldwell
McCall

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Top 3 airlines flying from Seattle to Boise

Discover the top 3 airlines that operate flights from Seattle to Boise. 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 October 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$97Average$212FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$117Average$217FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$127Average$220FlexibilityNo cancel feeOn-time75%

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