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$77+ 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 9/28. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SEA
Aug 31 — Sep 71
Mon 8/31
Mon 9/7
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 August 1, 2026.

This Delta deal was found by Cheapflights users on 7/30. 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 11/103:52 pm
BOI
-
SEA
Nonstop1h 53m
Delta
Tue 11/174:04 pm
SEA
-
BOI
Nonstop1h 33m
Delta
Deal found 7/30$157
This Trip.com deal was found by Cheapflights users on 7/28. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/296:23 am
BOI
-
SEA
Nonstop1h 39m
Alaska Airlines
Sun 8/309:18 pm
SEA
-
BOI
Nonstop1h 26m
Alaska Airlines
Deal found 7/28$161
This Alaska Airlines deal was found by Cheapflights users on 7/30. 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 9/96:49 pm
BOI
-
SEA
1 stop25h 03m
Alaska Airlines
Thu 9/109:18 pm
SEA
-
BOI
Nonstop1h 26m
Alaska Airlines
Deal found 7/30$162
This Delta deal was found by Cheapflights users on 7/30. 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 9/193:28 pm
BOI
-
SEA
Nonstop1h 42m
Delta
Mon 9/217:59 pm
SEA
-
BOI
Nonstop1h 35m
Delta
Deal found 7/30$167
This Trip.com deal was found by Cheapflights users on 7/30. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/118:03 am
BOI
-
SEA
Nonstop1h 39m
Alaska Airlines
Sun 9/137:15 am
SEA
-
BOI
Nonstop1h 41m
Alaska Airlines
Deal found 7/30$170
This Traveloka deal was found by Cheapflights users on 7/30. 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 Traveloka is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/136:23 am
BOI
-
SEA
Nonstop1h 39m
Alaska Airlines
Sun 9/209:55 am
SEA
-
BOI
Nonstop1h 40m
Alaska Airlines
Deal found 7/30$174
This Alaska Airlines deal was found by Cheapflights users on 7/27. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/268:03 am
BOI
-
SEA
Nonstop1h 39m
Alaska Airlines
Wed 8/2611:41 am
SEA
-
BOI
1 stop7h 39m
Alaska Airlines
Deal found 7/27$176
This Alaska Airlines deal was found by Cheapflights users on 7/29. 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 9/114:20 pm
BOI
-
SEA
Nonstop1h 36m
Alaska Airlines
Fri 9/187:15 am
SEA
-
BOI
Nonstop1h 41m
Alaska Airlines
Deal found 7/29$177
This Alaska Airlines deal was found by Cheapflights users on 7/29. 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 8/317:20 am
BOI
-
SEA
1 stop28h 05m
Alaska Airlines
Tue 9/11:04 pm
SEA
-
BOI
Nonstop1h 27m
Alaska Airlines
Deal found 7/29$182
This Southwest deal was found by Cheapflights users on 7/29. 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 8/316:30 am
BOI
-
SEA
1 stop6h 00m
Southwest
Tue 9/15:55 am
SEA
-
BOI
1 stop6h 55m
Southwest
Deal found 7/29$187
This Alaska Airlines deal was found by Cheapflights users on 7/28. 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 9/17:20 am
BOI
-
SEA
1 stop13h 32m
Alaska Airlines
Tue 9/89:55 am
SEA
-
BOI
Nonstop1h 40m
Alaska Airlines
Deal found 7/28$190
This Southwest deal was found by Cheapflights users on 7/28. 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 10/132:25 pm
BOI
-
SEA
2 stops10h 30m
Southwest
Fri 10/166:55 am
SEA
-
BOI
1 stop5h 25m
Southwest
Deal found 7/28$192

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 August 1, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$157
(Delta)

One-way from

$77
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$223

Good round-trip deal

$315 or less

Good one-way deal

$207 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. 26% potential increase in price ($75 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 August 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 August 1, 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

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Tue 9/22

8:55 am-9:50 am

Nonstop1h 55m

Seattle/Tacoma Intl

Mon 9/28

9:29 pm-11:58 pm

Nonstop1h 29m

$167

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Sat 9/19

7:20 am-7:52 pm

1 stop13h 32m

Seattle/Tacoma Intl

Wed 9/23

7:15 am-9:56 am

Nonstop1h 41m

$190
Quickest round-trip

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Sat 8/29

4:20 pm-4:56 pm

Nonstop1h 36m

Seattle/Tacoma Intl

Mon 8/31

6:03 pm-8:33 pm

Nonstop1h 30m

$207

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Fri 9/4

10:35 am-11:28 am

Nonstop1h 53m

Seattle/Tacoma Intl

Mon 9/7

2:45 pm-5:19 pm

Nonstop1h 34m

$217

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Wed 8/26

3:30 pm-9:05 am

1 stop18h 35m

Seattle/Tacoma Intl

Thu 8/27

1:04 pm-3:31 pm

Nonstop1h 27m

$217

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Fri 8/28

5:59 pm-6:37 pm

Nonstop1h 38m

Seattle/Tacoma Intl

Mon 8/31

7:15 am-9:55 am

Nonstop1h 40m

$217

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Fri 8/28

1:32 pm-6:51 pm

1 stop6h 19m

Seattle/Tacoma Intl

Mon 8/31

7:08 am-1:21 pm

1 stop5h 13m

$237

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Fri 9/11

6:49 pm-9:20 am

1 stop15h 31m

Seattle/Tacoma Intl

Fri 9/18

9:55 am-12:35 pm

Nonstop1h 40m

$240

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Thu 8/27

7:20 am-6:52 pm

1 stop12h 32m

Seattle/Tacoma Intl

Thu 9/3

11:50 am-2:22 pm

Nonstop1h 32m

$240

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Fri 9/11

4:55 pm-12:45 am

1 stop8h 50m

Seattle/Tacoma Intl

Fri 9/18

9:05 am-8:45 pm

1 stop10h 40m

$242

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 23 resultsSorted by cheapest first
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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 August.
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 $331). 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 August 1, 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 evening.

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 July 25, 2026.

Travelers seeking maximum savings on their Boise to Seattle flight should consider departing on Friday afternoons when fares are most often at their lowest. Wednesday evenings 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?

Airfare is typical for this route at the moment.

Boise to Seattle flights typically cost between $157 and $297 in November.
The cheapest round-trip price found within the last 5 days was $157 on Delta (Nov 10-Nov 17).

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 August 1, 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
12,742 reviews

Crew

8.5

Entertainment

7.0

Overall

7.9

Food

7.0

Comfort

7.8

Boarding

8.1

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
12,742 reviews
Alaska Airlines
7.9
Good
12,742 reviews

Crew

8.5

Entertainment

7.0

Overall

7.9

Food

7.0

Comfort

7.8

Boarding

8.1

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
7.8
Good
8,499 reviews
Alaska Airlines
7.9
Good
12,742 reviews

Crew

8.5

Entertainment

7.0

Overall

7.9

Food

7.0

Comfort

7.8

Boarding

8.1

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
2,820 reviews
Alaska Airlines
7.9
Good
12,742 reviews

Crew

8.5

Entertainment

7.0

Overall

7.9

Food

7.0

Comfort

7.8

Boarding

8.1

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 35m for a nonstop flight. There are 32 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, 61 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 $167, Delta can have you in Seattle from Boise in 1h 55m. 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 53% 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 $69 while deals on Alaska Airlines start at $71 one-way.

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

    Consider Korean Air (100%), Aeromexico (94%) or Scandinavian Airlines (85%) 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 $2,014 for a flight from Boise to Seattle. The cheapest flight overall is $118 while the most popular route, (Boise Air Term. Gowen Fld - Seattle/Tacoma Intl) is currently priced at $167.

  • 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 $331). 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
Renton
Tacoma
Lacey
Leavenworth
Olympia
Edmonds
Tukwila
Snoqualmie
Tumwater
Centralia
Puyallup
Kent
Ellensburg
Fife
Marysville
Ocean Shores
Lakewood
Lynnwood
Shoreline

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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 August 1, 2026.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$97Average$177FlexibilityNo cancel feeOn-time85%
DeltaCheapest$97Average$197FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$99Average$258FlexibilityNo cancel feeOn-time75%

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