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$60+ 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 10/7. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BOI
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
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 Thursday or Tuesday and return on a Friday

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 September 17, 2025.

Round-trip from

$137
(Delta)

One-way from

$60
(Delta)

Popular in

September

Cheapest in

January

Average price

$317

Good round-trip deal

$157 or less

Good one-way deal

$156 or less
From Seattle/Tacoma Intl to Boise Air Term. Gowen Fld
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One-way flight from Seattle/Tacoma Intl to Boise Air Term. Gowen Fld
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Highest demand for flights based on searches. 6% potential increase in price ($16 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Seattle/Tacoma Intl to Boise Air Term. Gowen Fld.
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Price to beat on a one-way flight from Seattle/Tacoma Intl to Boise Air Term. Gowen Fld.
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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 September 17, 2025.

This Delta deal was found by Cheapflights users on 9/16. 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 11/191:30 pmSEA - BOI
Nonstop1h 35mDelta
Mon 11/241:50 pmBOI - SEA
Nonstop1h 52mDelta
Deal found 9/16$137
This Southwest deal was found by Cheapflights users on 9/15. 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 10/141:20 pmSEA - BOI
1 stop8h 45mSouthwest
Wed 10/155:30 pmBOI - SEA
1 stop6h 15mSouthwest
Deal found 9/15$142
This Southwest deal was found by Cheapflights users on 9/15. 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 11/1812:10 pmSEA - BOI
1 stop7h 30mSouthwest
Sat 11/226:50 pmBOI - SEA
1 stop7h 10mSouthwest
Deal found 9/15$144
This Hawaiian Airlines deal was found by Cheapflights users on 9/17. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/118:35 pmSEA - BOI
Nonstop1h 30mHawaiian Airlines
Mon 10/136:59 pmBOI - SEA
1 stop4h 11mHawaiian Airlines
Deal found 9/17$147
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 10/1512:00 pmSEA - BOI
Nonstop1h 36mMultiple Airlines
Wed 10/221:50 pmBOI - SEA
1 stop6h 20mMultiple Airlines
Deal found 9/15$148
This Southwest deal was found by Cheapflights users on 9/15. 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 12/237:00 amSEA - BOI
1 stop11h 15mSouthwest
Sat 1/36:50 pmBOI - SEA
1 stop7h 10mSouthwest
Deal found 9/15$149
This Southwest deal was found by Cheapflights users on 9/14. 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 10/185:00 amSEA - BOI
1 stop8h 05mSouthwest
Mon 10/203:55 pmBOI - SEA
1 stop7h 25mSouthwest
Deal found 9/14$151
This Southwest deal was found by Cheapflights users on 9/16. 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.
Mon 12/227:00 amSEA - BOI
1 stop11h 15mSouthwest
Sat 1/36:50 pmBOI - SEA
1 stop7h 10mSouthwest
Deal found 9/16$156
This Delta deal was found by Cheapflights users on 9/17. 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 10/2410:40 amSEA - BOI
Nonstop1h 40mDelta
Sun 10/265:25 amBOI - SEA
Nonstop1h 52mDelta
Deal found 9/17$157
This Southwest deal was found by Cheapflights users on 9/16. 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 10/1510:10 amSEA - BOI
1 stop4h 25mSouthwest
Sun 10/193:50 pmBOI - SEA
1 stop9h 45mSouthwest
Deal found 9/16$162
This Southwest deal was found by Cheapflights users on 9/15. 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.
Thu 10/308:20 amSEA - BOI
1 stop7h 45mSouthwest
Sun 11/25:40 pmBOI - SEA
1 stop7h 55mSouthwest
Deal found 9/15$164

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 September 17, 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

Sat 11/22

1:30 pm-4:05 pm

Nonstop1h 35m

Boise Air Term. Gowen Fld

Mon 11/24

4:45 pm-5:25 pm

Nonstop1h 40m

$137

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Fri 11/21

9:17 pm-11:39 pm

Nonstop1h 22m

Boise Air Term. Gowen Fld

Wed 11/26

9:42 pm-10:23 pm

Nonstop1h 41m

$137

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Sat 11/22

8:30 am-11:02 am

Nonstop1h 32m

Boise Air Term. Gowen Fld

Thu 11/27

11:42 am-12:35 pm

Nonstop1h 53m

$137

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Wed 11/19

4:20 pm-6:54 pm

Nonstop1h 34m

Boise Air Term. Gowen Fld

Thu 11/27

11:42 am-12:35 pm

Nonstop1h 53m

$137

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Fri 10/24

7:34 pm-10:06 pm

Nonstop1h 32m

Boise Air Term. Gowen Fld

Tue 10/28

11:41 am-12:29 pm

Nonstop1h 48m

$137

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Wed 10/15

10:26 am-1:10 pm

Nonstop1h 44m

Boise Air Term. Gowen Fld

Wed 10/22

6:59 pm-10:10 pm

1 stop4h 11m

$147

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Sat 10/18

10:26 am-1:10 pm

Nonstop1h 44m

Boise Air Term. Gowen Fld

Sat 10/25

1:50 pm-4:57 pm

1 stop4h 07m

$147

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Fri 10/24

4:20 pm-11:40 pm

1 stop6h 20m

Boise Air Term. Gowen Fld

Tue 10/28

2:35 pm-8:45 pm

1 stop7h 10m

$157

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Thu 11/20

10:10 am-12:36 pm

Nonstop1h 26m

Boise Air Term. Gowen Fld

Sun 11/23

11:39 am-12:22 pm

Nonstop1h 43m

$157

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Wed 11/26

1:30 pm-4:05 pm

Nonstop1h 35m

Boise Air Term. Gowen Fld

Tue 12/2

1:54 pm-2:45 pm

Nonstop1h 51m

$157

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 22 results
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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 September 12, 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, October is the cheapest month in which you can book a flight from Seattle to Boise (average of $314). Flying from Seattle to Boise in June is currently the most expensive (average of $398). 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 September 17, 2025.

It’s typically best to fly out from Seattle to Boise in the afternoon. Doing so could potentially save you 5% on the flight price compared to flying in the evening, 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 September 14, 2025.

Travelers seeking maximum savings on their Seattle to Boise flight should consider departing on Saturday evenings when fares are most often at their lowest. Monday evenings 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 September 17, 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
10,000 reviews

Comfort

7.8

Entertainment

7.1

Food

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

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
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Food

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

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
8.0
Very good
7,961 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Food

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

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
2,729 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Food

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

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 22m 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 13 times in the past calendar month.

  • How long is the flight from Seattle to Boise?

    For as low as $137, Delta can have you in Boise from Seattle in 1h 22m. 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 $106 on this airline. Additional options worth looking into are Hawaiian Airlines and Alaska Airlines, starting at $117 and $136 round-trip. Users have found that Delta is 52% 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 (94%), Delta (89%), KLM( 87%).

  • What are the cheapest flights from Seattle to Boise?

    Looking for the cheapest flight from Seattle to Boise? While on average our users pay $271, our data indicates the cheapest price to be $98. 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, October is the cheapest month in which you can book a flight from Seattle to Boise (average of $314). Flying from Seattle to Boise in June is currently the most expensive (average of $398). 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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Alternative routes for Seattle to Boise

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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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$106Average$212FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$117Average$217FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$136Average$225FlexibilityNo cancel feeOn-time75%

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