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$70+ 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 8/27. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SEA
juil. 8 — juil. 151
mar. 7/8
mar. 7/15
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 September or October, 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 juillet 3, 2025.

Round-trip from

$157
(Delta)

One-way from

$70
(SmartFares)

Popular in

June

Cheapest in

September

Average price

$197

Good round-trip deal

$237 or less

Good one-way deal

$140 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. 3% potential increase in price ($8 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 juillet 3, 2025.

This Delta deal was found by Cheapflights users on 7/2. 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.
jeu. 8/1411:45 amBOI - SEA
Nonstop1h 44mDelta
dim. 8/179:20 pmSEA - BOI
Nonstop1h 30mDelta
Deal found 7/2$157
This Southwest deal was found by Cheapflights users on 7/1. 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.
mer. 9/106:00 amBOI - SEA
2 stops8h 20mSouthwest
mer. 9/176:45 amSEA - BOI
2 stops9h 35mSouthwest
Deal found 7/1$161
This Hawaiian Airlines deal was found by Cheapflights users on 7/2. 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.
sam. 8/234:00 pmBOI - SEA
1 stop3h 45mHawaiian Airlines
dim. 8/3111:20 amSEA - BOI
Nonstop1h 28mHawaiian Airlines
Deal found 7/2$167
This Alaska Airlines deal was found by Cheapflights users on 7/2. 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.
sam. 8/302:34 pmBOI - SEA
1 stop4h 19mAlaska Airlines
sam. 9/67:50 amSEA - BOI
1 stop3h 13mAlaska Airlines
Deal found 7/2$176
This United Airlines deal was found by Cheapflights users on 7/2. 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.
mer. 7/307:15 pmBOI - SEA
1 stop6h 44mUnited Airlines
mer. 8/65:10 amSEA - BOI
1 stop7h 48mUnited Airlines
Deal found 7/2$214
This FlightHub deal was found by Cheapflights users on 7/1. 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.
ven. 8/87:48 pmBOI - SEA
1 stop21h 37mSpirit Airlines
dim. 8/105:30 pmSEA - BOI
1 stop24h 22mSpirit Airlines
Deal found 7/1$223
This Expedia deal was found by Cheapflights users on 7/2. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 8/2912:33 pmBOI - SEA
1 stop13h 01mMultiple Airlines
dim. 8/315:42 pmSEA - BOI
1 stop3h 15mMultiple Airlines
Deal found 7/2$231

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 juillet 3, 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

jeu. 8/14

11:45 am-12:29 pm

Nonstop1h 44m

Seattle/Tacoma Intl

dim. 8/17

9:20 pm-11:50 pm

Nonstop1h 30m

$157

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

mer. 9/10

6:00 am-1:20 pm

2 stops8h 20m

Seattle/Tacoma Intl

mer. 9/17

6:45 am-5:20 pm

2 stops9h 35m

$161

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

sam. 8/23

4:00 pm-6:45 pm

1 stop3h 45m

Seattle/Tacoma Intl

dim. 8/31

11:20 am-1:48 pm

Nonstop1h 28m

$167

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

sam. 8/30

2:34 pm-7:05 pm

1 stop5h 31m

Seattle/Tacoma Intl

mar. 9/2

5:42 pm-9:57 pm

1 stop3h 15m

$176

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

mer. 7/30

7:15 pm-12:59 am

1 stop6h 44m

Seattle/Tacoma Intl

mer. 8/6

5:10 am-1:58 pm

1 stop7h 48m

$214

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

ven. 8/8

7:48 pm-4:25 pm

1 stop21h 37m

Seattle/Tacoma Intl

dim. 8/10

5:30 pm-6:52 pm

1 stop24h 22m

$223

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

ven. 8/29

12:33 pm-12:34 am

1 stop13h 01m

Seattle/Tacoma Intl

dim. 8/31

5:42 pm-9:57 pm

1 stop3h 15m

$231

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

mer. 8/27

7:17 pm-7:55 pm

Nonstop1h 38m

$70

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

lun. 8/4

5:25 pm-12:25 am

1 stop8h 00m

$76

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

mer. 9/10

5:47 am-6:29 am

Nonstop1h 42m

$79

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

Showing 1-10 of 14 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 June 27, 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 July is currently the most expensive (average of $390). 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 juillet 3, 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 June 29, 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 juillet 3, 2025.

The most flights from BOI to SEA are scheduled on a Thursday (68 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (40 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 juillet 3, 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

Boarding

8.1

Entertainment

7.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very good
4,266 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,982 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Hawaiian Airlines
7.8
Good
2,545 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,861 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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 54 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, 75 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 $157, Delta will fly you from Boise to Seattle and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Southwest and Hawaiian Airlines - these airlines can fly you to your destination from $161 and $167, respectively. Delta is 21% 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 $70. Southwest flights start at $76 while deals on Delta start at $79 one-way.

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

    Consider Singapore Airlines (100%), WestJet (90%) or Delta (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 $1,338 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 July is currently the most expensive (average of $390). 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
SeaTac
Tukwila
Tacoma
Lakewood
Ocean Shores
Lacey
Leavenworth
Lynnwood
Renton
Olympia
Shoreline
Puyallup
Cle Elum
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Kent
Federal Way
Chehalis
Kirkland
Aberdeen
Shelton

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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 juillet 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$117Average$194FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$126Average$202FlexibilityNo cancel feeOn-time75%
Hawaiian AirlinesCheapest$137Average$197FlexibilityNo cancel feeOn-time85%

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