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$72+ 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 8/30. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SEA
Jul 23 — Jul 301
Wed 7/23
Wed 7/30
1 adult, Economy
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Cheapflights Tip: The best prices from Boise Air Term. Gowen Fld to Seattle/Tacoma Intl are usually found in October or September, booked 42 days in advance, depart on a Thursday or Friday and return on a Thursday

Cheap 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 July 18, 2025.

Round-trip from

$156
(Southwest)

One-way from

$72
(iWofly)

Popular in

December

Cheapest in

October

Average price

$211

Good round-trip deal

$259 or less

Good one-way deal

$163 or less
From Boise Air Term. Gowen Fld to Seattle/Tacoma Intl
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One-way flight from Boise Air Term. Gowen Fld to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 9% potential increase in price ($20 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($3 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from Boise Air Term. Gowen Fld to Seattle/Tacoma Intl.
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Price to beat on a one-way flight from Boise Air Term. Gowen Fld to Seattle/Tacoma Intl.
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Find 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 July 18, 2025.

This Southwest deal was found by Cheapflights users on 7/16. 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.
Sat 9/62:00 pmBOI - SEA
1 stop9h 30mSouthwest
Mon 9/225:20 pmSEA - BOI
1 stop4h 45mSouthwest
Deal found 7/16$156
This Delta deal was found by Cheapflights users on 7/17. 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 8/227:30 amBOI - SEA
Nonstop1h 42mDelta
Mon 8/255:45 pmSEA - BOI
Nonstop1h 35mDelta
Deal found 7/17$157
This Alaska Airlines deal was found by Cheapflights users on 7/15. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/162:44 pmBOI - SEA
1 stop4h 18mAlaska Airlines
Sat 8/168:14 pmSEA - BOI
Nonstop1h 32mAlaska Airlines
Deal found 7/15$161
This Hawaiian Airlines deal was found by Cheapflights users on 7/16. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/236:59 pmBOI - SEA
1 stop3h 58mHawaiian Airlines
Mon 8/258:10 pmSEA - BOI
Nonstop1h 30mHawaiian Airlines
Deal found 7/16$167
This United Airlines deal was found by Cheapflights users on 7/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/239:52 amBOI - SEA
1 stop7h 27mUnited Airlines
Sun 8/247:00 amSEA - BOI
1 stop5h 49mUnited Airlines
Deal found 7/14$193
This CheapOair deal was found by Cheapflights users on 7/15. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/87:48 pmBOI - SEA
1 stop21h 37mSpirit Airlines
Sun 8/105:30 pmSEA - BOI
1 stop24h 22mSpirit Airlines
Deal found 7/15$208
This FlightHub deal was found by Cheapflights users on 7/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/712:36 pmBOI - SEA
1 stop12h 58mMultiple Airlines
Sun 8/105:30 pmSEA - BOI
1 stop24h 22mMultiple Airlines
Deal found 7/15$255

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 July 18, 2025.
Use the filters below to find and compare flights from Boise to Seattle that are best for you.

Fly from

Boise

Fly to

Seattle

Route

Depart

Return

Price

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Sat 9/6

2:00 pm-10:30 pm

1 stop9h 30m

Seattle/Tacoma Intl

Mon 9/22

5:20 pm-11:05 pm

1 stop4h 45m

$156

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Fri 8/22

9:00 am-9:45 am

Nonstop1h 45m

Seattle/Tacoma Intl

Mon 9/1

3:40 pm-6:16 pm

Nonstop1h 36m

$157

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Sat 8/16

2:44 pm-6:02 pm

1 stop4h 18m

Seattle/Tacoma Intl

Sat 8/16

8:14 pm-10:46 pm

Nonstop1h 32m

$161

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Sat 8/23

6:59 pm-9:57 pm

1 stop3h 58m

Seattle/Tacoma Intl

Mon 8/25

8:10 pm-10:40 pm

Nonstop1h 30m

$167

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Sat 8/23

9:52 am-4:19 pm

1 stop7h 27m

Seattle/Tacoma Intl

Sun 8/24

7:00 am-1:49 pm

1 stop5h 49m

$193

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Fri 8/8

7:48 pm-4:25 pm

1 stop21h 37m

Seattle/Tacoma Intl

Sun 8/10

5:30 pm-6:52 pm

1 stop24h 22m

$208

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Thu 8/7

12:36 pm-12:34 am

1 stop12h 58m

Seattle/Tacoma Intl

Sun 8/10

5:30 pm-6:52 pm

1 stop24h 22m

$255

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Sat 8/30

7:17 pm-7:55 pm

Nonstop1h 38m

$72

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Wed 10/15

2:35 pm-8:45 pm

1 stop7h 10m

$76

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Sat 8/16

6:51 pm-10:00 pm

1 stop4h 09m

$88

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/16

Showing 1-10 of 15 results
1
2

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?

Use this chart to determine the optimal time to book a round-trip flight from Boise to Seattle. Price data was last updated on July 11, 2025.

Booking 42 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 $238). Flying from Boise to Seattle in June is currently the most expensive (average of $388). 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 July 18, 2025.

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 evening, which can drop the price by up to 19% 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 July 13, 2025.

Travelers seeking maximum savings on their Boise to Seattle 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.

Weekly flight availability from Boise to Seattle

Explore weekly flight availability from Boise to Seattle. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated July 18, 2025.

The most flights from BOI to SEA are scheduled on a Wednesday (70 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (52 on average).

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 July 18, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest, and Delta 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
8.0
Very good
10,000 reviews

Food

7.1

Crew

8.5

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Crew

8.5

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Southwest
8.0
Very good
4,239 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Crew

8.5

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Delta
8.0
Very good
7,959 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Crew

8.5

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Hawaiian Airlines
7.8
Good
2,581 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Crew

8.5

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
United Airlines
7.4
Good
8,864 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Crew

8.5

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.

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 65 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, 81 users have taken a look at flights from Boise Air Term. Gowen Fld to Seattle/Tacoma Intl.

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

    Currently priced at $156, Southwest will fly you from Boise to Seattle and back. In addition to Southwest, 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 $157 and $161, respectively. Southwest is 20% 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 $72. Southwest flights start at $76 while deals on Alaska Airlines start at $88 one-way.

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

    Consider Singapore Airlines (100%), Aeromexico (91%) or WestJet (88%) 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 $1,681 for a flight from Boise to Seattle. The cheapest flight overall is $98 while the most popular route, (Boise Air Term. Gowen Fld - Seattle/Tacoma Intl) is currently priced at $117.

  • 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 $238). Flying from Boise to Seattle in June is currently the most expensive (average of $388). 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
Tukwila
Tacoma
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Lacey
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Olympia
Puyallup
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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 July 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$117Average$197FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$117Average$197FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$124Average$201FlexibilityNo cancel feeOn-time75%

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