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$104+ 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 8/4. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SEA
Jul 16 — Jul 231
Thu 7/16
Thu 7/23
1 adult, Economy
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Find cheap flights from Boise to Seattle with Cheapflights

1. Tell us where you want to go

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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 65 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 June 16, 2026.

This Alaska Airlines deal was found by Cheapflights users on 6/14. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/226:49 pm
BOI
-
SEA
1 stop16h 36m
Alaska Airlines
Wed 9/231:03 pm
SEA
-
BOI
Nonstop1h 27m
Alaska Airlines
Deal found 6/14$197
This Alaska Airlines deal was found by Cheapflights users on 6/11. 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 10/198:57 am
BOI
-
SEA
1 stop24h 19m
Alaska Airlines
Tue 10/2011:33 am
SEA
-
BOI
Nonstop1h 38m
Alaska Airlines
Deal found 6/11$201
This Delta deal was found by Cheapflights users on 6/16. 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.
Sat 8/296:49 am
BOI
-
SEA
Nonstop1h 46m
Delta
Mon 8/319:03 am
SEA
-
BOI
Nonstop1h 40m
Delta
Deal found 6/16$207
This Delta deal was found by Cheapflights users on 6/16. 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.
Fri 9/1810:35 am
BOI
-
SEA
Nonstop1h 52m
Delta
Mon 9/287:15 am
SEA
-
BOI
Nonstop1h 39m
Delta
Deal found 6/16$217
This Alaska Airlines deal was found by Cheapflights users on 6/12. 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 10/136:40 am
BOI
-
SEA
Nonstop1h 40m
Alaska Airlines
Tue 10/1310:48 am
SEA
-
BOI
1 stop8h 41m
Alaska Airlines
Deal found 6/12$221
This Southwest deal was found by Cheapflights users on 6/13. 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 9/811:30 am
BOI
-
SEA
1 stop8h 40m
Southwest
Tue 9/157:40 am
SEA
-
BOI
1 stop6h 20m
Southwest
Deal found 6/13$222
This Alaska Airlines deal was found by Cheapflights users on 6/11. 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 8/710:52 am
BOI
-
SEA
1 stop23h 21m
Alaska Airlines
Sat 8/812:55 pm
SEA
-
BOI
Nonstop1h 31m
Alaska Airlines
Deal found 6/11$223
This Alaska Airlines deal was found by Cheapflights users on 6/16. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/311:30 pm
BOI
-
SEA
1 stop22h 21m
Alaska Airlines
Tue 9/11:04 pm
SEA
-
BOI
Nonstop1h 27m
Alaska Airlines
Deal found 6/16$227
This Southwest deal was found by Cheapflights users on 6/12. 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 9/194:00 pm
BOI
-
SEA
1 stop5h 30m
Southwest
Mon 9/289:20 am
SEA
-
BOI
1 stop8h 50m
Southwest
Deal found 6/12$232
This Alaska Airlines deal was found by Cheapflights users on 6/11. 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 10/205:56 am
BOI
-
SEA
1 stop5h 39m
Alaska Airlines
Wed 10/217:17 am
SEA
-
BOI
1 stop4h 57m
Alaska Airlines
Deal found 6/11$237
This Alaska Airlines deal was found by Cheapflights users on 6/14. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/279:06 am
BOI
-
SEA
1 stop25h 38m
Alaska Airlines
Tue 7/2812:55 pm
SEA
-
BOI
Nonstop1h 31m
Alaska Airlines
Deal found 6/14$239
This Booking.com deal was found by Cheapflights users on 6/12. 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.
Tue 8/41:24 pm
BOI
-
SEA
1 stop20h 40m
Frontier
Sat 8/87:06 pm
SEA
-
BOI
1 stop16h 23m
Frontier
Deal found 6/12$241

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 June 16, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$197
(Delta)

One-way from

$104
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$312

Good round-trip deal

$352 or less

Good one-way deal

$227 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. 24% potential increase in price ($65 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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 June 16, 2026.
Use the filters below to find and compare flights from Boise to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Tue 9/8

5:59 pm-6:41 pm

Nonstop1h 42m

Seattle/Tacoma Intl

Tue 9/15

2:45 pm-5:19 pm

Nonstop1h 34m

$197

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Thu 8/27

12:23 pm-1:12 pm

Nonstop1h 49m

Seattle/Tacoma Intl

Fri 9/4

7:15 am-9:55 am

Nonstop1h 40m

$217

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Thu 8/13

8:03 am-3:33 pm

1 stop8h 30m

Seattle/Tacoma Intl

Sat 8/22

1:04 pm-3:31 pm

Nonstop1h 27m

$287

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Fri 9/4

2:17 pm-2:53 pm

Nonstop1h 36m

Seattle/Tacoma Intl

Fri 9/11

4:32 pm-10:25 pm

1 stop4h 53m

$297

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Thu 8/27

4:17 pm-4:53 pm

Nonstop1h 36m

Seattle/Tacoma Intl

Fri 9/4

7:50 am-12:50 pm

1 stop4h 00m

$297

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Sat 8/29

7:45 am-7:30 pm

2 stops12h 45m

Seattle/Tacoma Intl

Sun 8/30

6:55 am-11:55 am

1 stop4h 00m

$308

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Thu 7/23

5:55 pm-1:45 am

1 stop8h 50m

Seattle/Tacoma Intl

Wed 7/29

7:30 am-2:25 pm

1 stop5h 55m

$317

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Thu 7/9

5:55 pm-1:45 am

1 stop8h 50m

Seattle/Tacoma Intl

Thu 7/16

2:25 pm-12:25 am

1 stop9h 00m

$317

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Thu 7/30

5:55 pm-1:45 am

1 stop8h 50m

Seattle/Tacoma Intl

Thu 8/6

3:25 pm-11:35 pm

2 stops7h 10m

$322

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Sat 8/15

6:53 pm-8:59 pm

1 stop3h 06m

Seattle/Tacoma Intl

Mon 8/17

7:04 am-9:37 am

Nonstop1h 33m

$337

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/15

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3

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 June.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice 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?

Booking 57 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 $139). Flying from Boise to Seattle in June is currently the most expensive (average of $312). 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 June 16, 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 afternoon, which can drop the price by up to 11% versus a flight in the morning.

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 June 13, 2026.

Travelers seeking maximum savings on their Boise to Seattle flight should consider departing on Thursday at noon when fares are most often at their lowest. Monday at noon 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 Boise to Seattle?

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 June 16, 2026.
Get a feel of what it's like to fly with Alaska Airlines,Delta, andHawaiian 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
7.9
Good
12,522 reviews

Entertainment

7.0

Food

7.1

Crew

8.5

Overall

7.9

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Jun 2026

RDU - SEA

There was almost a 2 hour delay after arriving before our next flight. Also my husband needed a wheelchair and it seemed hard to get help.
Alaska Airlines
7.9
Good
12,522 reviews
Alaska Airlines
7.9
Good
12,522 reviews

Entertainment

7.0

Food

7.1

Crew

8.5

Overall

7.9

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Jun 2026

RDU - SEA

There was almost a 2 hour delay after arriving before our next flight. Also my husband needed a wheelchair and it seemed hard to get help.
Delta
7.9
Good
8,405 reviews
Alaska Airlines
7.9
Good
12,522 reviews

Entertainment

7.0

Food

7.1

Crew

8.5

Overall

7.9

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Jun 2026

RDU - SEA

There was almost a 2 hour delay after arriving before our next flight. Also my husband needed a wheelchair and it seemed hard to get help.
Hawaiian Airlines
7.8
Good
2,829 reviews
Alaska Airlines
7.9
Good
12,522 reviews

Entertainment

7.0

Food

7.1

Crew

8.5

Overall

7.9

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Jun 2026

RDU - SEA

There was almost a 2 hour delay after arriving before our next flight. Also my husband needed a wheelchair and it seemed hard to get help.

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 40 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, 68 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 $197, Delta can have you in Seattle from Boise in 1h 42m. The distance from Boise to Seattle is about 398 mi. 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 Boise to Seattle round-trip?

    Currently priced at $97, Hawaiian Airlines will fly you from Boise to Seattle and back. In addition to Hawaiian Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and Alaska Airlines - these airlines can fly you to your destination from $97 and $99, respectively. Hawaiian Airlines is 52% 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 Alaska Airlines, which is currently one of the cheapest options available, starting at $69. Delta flights start at $69 while deals on Southwest start at $75 one-way.

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

    Consider Finnair (94%), Condor (92%) or Aeromexico (91%) 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 $1,128 for a flight from Boise to Seattle. The cheapest flight overall is $178 while the most popular route, (Boise Air Term. Gowen Fld - Seattle/Tacoma Intl) is currently priced at $197.

  • 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 $139). Flying from Boise to Seattle in June is currently the most expensive (average of $312). 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
SeaTac
Tacoma
Lacey
Ocean Shores
Leavenworth
Olympia
Edmonds
Snoqualmie
Tumwater
Tukwila
Puyallup
Kent
Lynnwood
Renton
Ellensburg
Fife
Lakewood
Issaquah
Shoreline
Marysville

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 June 16, 2026.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$97Average$177FlexibilityNo cancel feeOn-time85%
DeltaCheapest$97Average$198FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$99Average$228FlexibilityNo cancel feeOn-time75%

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