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$109+ 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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BOI
Jun 27 — Jul 41
Sat 6/27
Sat 7/4
1 adult, Economy
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1. Tell us where you want to go

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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 Friday and return on a Friday

Cheap 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 May 28, 2026.

This Delta deal was found by Cheapflights users on 5/26. 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.
Tue 8/252:45 pm
SEA
-
BOI
Nonstop1h 34m
Delta
Wed 9/25:59 pm
BOI
-
SEA
Nonstop1h 38m
Delta
Deal found 5/26$197
This Delta deal was found by Cheapflights users on 5/26. 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.
Wed 8/192:45 pm
SEA
-
BOI
Nonstop1h 34m
Delta
Mon 8/245:59 pm
BOI
-
SEA
Nonstop1h 38m
Delta
Deal found 5/26$207
This Delta deal was found by Cheapflights users on 5/27. 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.
Thu 8/279:20 pm
SEA
-
BOI
Nonstop1h 33m
Delta
Mon 8/318:50 am
BOI
-
SEA
Nonstop1h 50m
Delta
Deal found 5/27$217
This Southwest deal was found by Cheapflights users on 5/27. 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 7/157:30 am
SEA
-
BOI
1 stop5h 55m
Southwest
Wed 7/224:20 pm
BOI
-
SEA
2 stops8h 15m
Southwest
Deal found 5/27$222
This Southwest deal was found by Cheapflights users on 5/27. 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 8/199:25 am
SEA
-
BOI
1 stop5h 45m
Southwest
Sun 8/234:35 pm
BOI
-
SEA
1 stop4h 30m
Southwest
Deal found 5/27$227
This Southwest deal was found by Cheapflights users on 5/24. 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 7/110:55 am
SEA
-
BOI
1 stop12h 35m
Southwest
Wed 7/153:00 pm
BOI
-
SEA
1 stop10h 35m
Southwest
Deal found 5/24$228
This Alaska Airlines deal was found by Cheapflights users on 5/26. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/38:37 am
SEA
-
BOI
1 stop3h 37m
Alaska Airlines
Sat 10/101:29 pm
BOI
-
SEA
1 stop6h 27m
Alaska Airlines
Deal found 5/26$237
This Alaska Airlines deal was found by Cheapflights users on 5/26. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/187:59 pm
SEA
-
BOI
Nonstop1h 25m
Alaska Airlines
Tue 8/251:15 pm
BOI
-
SEA
Nonstop1h 34m
Alaska Airlines
Deal found 5/26$247
This Mytrip deal was found by Cheapflights users on 5/23. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/47:41 pm
SEA
-
BOI
1 stop15h 48m
Frontier
Tue 7/71:24 pm
BOI
-
SEA
1 stop20h 53m
Frontier
Deal found 5/23$256
This Delta deal was found by Cheapflights users on 5/27. 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.
Mon 8/174:10 pm
SEA
-
BOI
Nonstop1h 38m
Delta
Mon 8/248:50 am
BOI
-
SEA
Nonstop1h 50m
Delta
Deal found 5/27$257
This Booking.com deal was found by Cheapflights users on 5/26. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/177:41 pm
SEA
-
BOI
1 stop15h 49m
Frontier
Sun 6/211:25 pm
BOI
-
SEA
1 stop25h 53m
Frontier
Deal found 5/26$262

Find 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 May 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$197
(Delta)

One-way from

$109
(United Airlines)

Popular in

May

Cheapest in

January

Average price

$277

Good round-trip deal

$262 or less

Good one-way deal

$118 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. 12% potential increase in price ($28 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
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 May 28, 2026.
Use the filters below to find and compare flights from Seattle to Boise that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Wed 8/26

2:45 pm-5:19 pm

Nonstop1h 34m

Boise Air Term. Gowen Fld

Sun 8/30

5:59 pm-6:37 pm

Nonstop1h 38m

$207

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Tue 8/25

2:45 pm-5:19 pm

Nonstop1h 34m

Boise Air Term. Gowen Fld

Sun 8/30

5:59 pm-6:37 pm

Nonstop1h 38m

$207

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Wed 11/11

5:20 am-12:30 pm

1 stop6h 10m

Boise Air Term. Gowen Fld

Wed 11/18

1:10 pm-5:45 pm

1 stop5h 35m

$217

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Tue 9/22

11:43 am-2:22 pm

Nonstop1h 39m

Boise Air Term. Gowen Fld

Wed 9/23

2:19 pm-2:55 pm

Nonstop1h 36m

$257

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Thu 6/18

9:20 pm-11:55 pm

Nonstop1h 35m

Boise Air Term. Gowen Fld

Sun 6/21

6:10 pm-6:54 pm

Nonstop1h 44m

$297

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Fri 7/10

9:20 pm-11:51 pm

Nonstop1h 31m

Boise Air Term. Gowen Fld

Sun 7/12

12:20 pm-1:07 pm

Nonstop1h 47m

$297

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Tue 6/23

4:35 pm-7:13 pm

Nonstop1h 38m

Boise Air Term. Gowen Fld

Sat 6/27

10:36 am-11:41 am

Nonstop2h 05m

$297

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Thu 7/16

9:20 pm-11:51 pm

Nonstop1h 31m

Boise Air Term. Gowen Fld

Sat 7/18

10:35 am-11:26 am

Nonstop1h 51m

$297

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Tue 7/21

7:30 am-2:25 pm

1 stop5h 55m

Boise Air Term. Gowen Fld

Thu 7/23

12:05 pm-9:30 pm

2 stops10h 25m

$307

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Thu 7/9

7:10 pm-1:50 am

1 stop5h 40m

Boise Air Term. Gowen Fld

Thu 7/16

5:55 pm-1:45 am

1 stop8h 50m

$317

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/27

Showing 1-10 of 23 resultsSorted by cheapest first
1
2
3

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 May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*1 star
CheapTicketsDealPrice 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 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?

Booking 61 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 $99). Flying from Seattle to Boise in May is currently the most expensive (average of $277). 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 May 28, 2026.

It’s typically best to fly out from Seattle to Boise at noon. 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 May 23, 2026.

Travelers seeking maximum savings on their Seattle to Boise flight should consider departing on Saturday at noon 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.

How much does it cost to fly round-trip from Seattle to Boise?

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 May 28, 2026.
Peruse reviews from past customers who have flown with Alaska Airlines,Delta, andHawaiian 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
7.9
Good
12,423 reviews

Overall

7.9

Crew

8.5

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Alaska Airlines
7.9
Good
12,423 reviews
Alaska Airlines
7.9
Good
12,423 reviews

Overall

7.9

Crew

8.5

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Delta
7.9
Good
8,423 reviews
Alaska Airlines
7.9
Good
12,423 reviews

Overall

7.9

Crew

8.5

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Hawaiian Airlines
7.8
Good
2,835 reviews
Alaska Airlines
7.9
Good
12,423 reviews

Overall

7.9

Crew

8.5

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.

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 33m on average. When it comes time to book airfare, you have a few options: there are 25 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 8 times in the past calendar month.

  • How long is the flight from Seattle to Boise?

    For as low as $207, Delta can have you in Boise from Seattle in 1h 34m. There are 398 mi between Seattle and Boise. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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 $80 on this airline. Additional options worth looking into are Alaska Airlines and Hawaiian Airlines, starting at $106 and $127 round-trip. Users have found that Delta is 61% cheaper than the other options available to this destination.

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

    To fly one-way, consider booking your trip with Hawaiian Airlines, which is currently one of the cheapest options available, starting at $58. Alaska Airlines flights start at $69 while deals on Delta start at $69 one-way.

  • 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: Aeromexico (93%), Qatar Airways (93%), KLM( 92%).

  • What are the cheapest flights from Seattle to Boise?

    Looking for the cheapest flight from Seattle to Boise? While on average our users pay $289, our data indicates the cheapest price to be $98. The most popular route (Seattle/Tacoma Intl - Boise Air Term. Gowen Fld), is priced around $197.

  • 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 $99). Flying from Seattle to Boise in May is currently the most expensive (average of $277). 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
Meridian
Nampa
Caldwell
Ontario
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 May 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$80Average$200FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$106Average$239FlexibilityNo cancel feeOn-time75%
Hawaiian AirlinesCheapest$127Average$258FlexibilityNo cancel feeOn-time85%

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