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$69+ 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 5/14. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SEA
Apr 21 — Apr 281
Mon 4/21
Mon 4/28
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 February, booked 52 days in advance, depart on a Friday or Thursday and return on a Saturday

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 April 16, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$137
(Delta)

One-way from

$69
(Delta)

Popular in

November

Cheapest in

October

Average price

$197

Good round-trip deal

$323 or less

Good one-way deal

$163 or less
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Seattle/Tacoma Intl flights.
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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
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Highest demand for flights based on searches. 3% potential increase in price ($6 potential increase over avg. RT price).
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Cheapest flight prices on average. 0% potential price decrease ($3 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 16, 2025.

This Delta deal was found by Cheapflights users on 4/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1310:46 amBOI - SEA
Nonstop1h 49mDelta
Tue 5/207:30 amSEA - BOI
Nonstop1h 36mDelta
Deal found 4/15$137
This Expedia deal was found by Cheapflights users on 4/16. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/136:30 amBOI - SEA
Nonstop1h 37mMultiple Airlines
Tue 5/206:00 amSEA - BOI
1 stop6h 37mMultiple Airlines
Deal found 4/16$154
This Frontier deal was found by Cheapflights users on 4/16. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/152:57 pmBOI - SEA
1 stop10h 47mFrontier
Sun 5/186:05 amSEA - BOI
1 stop6h 32mFrontier
Deal found 4/16$160
This Southwest deal was found by Cheapflights users on 4/15. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/173:15 pmBOI - SEA
1 stop5h 55mSouthwest
Sun 5/186:45 amSEA - BOI
1 stop8h 20mSouthwest
Deal found 4/15$172
This Alaska Airlines deal was found by Cheapflights users on 4/15. 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.
Tue 5/133:30 pmBOI - SEA
1 stop5h 25mAlaska Airlines
Tue 5/206:57 pmSEA - BOI
Nonstop1h 19mAlaska Airlines
Deal found 4/15$177
This Mytrip deal was found by Cheapflights users on 4/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/21:52 pmBOI - SEA
1 stop22h 43mSpirit Airlines
Sun 5/48:56 pmSEA - BOI
1 stop15h 01mSpirit Airlines
Deal found 4/15$213
This United Airlines deal was found by Cheapflights users on 4/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/187:41 amBOI - SEA
1 stop7h 02mUnited Airlines
Thu 6/59:45 amSEA - BOI
1 stop5h 56mUnited Airlines
Deal found 4/16$214
This Hawaiian Airlines deal was found by Cheapflights users on 4/16. 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.
Mon 5/57:45 amBOI - SEA
Nonstop1h 33mHawaiian Airlines
Fri 5/99:25 pmSEA - BOI
Nonstop1h 25mHawaiian Airlines
Deal found 4/16$217

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 April 16, 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

Tue 5/13

10:46 am-11:35 am

Nonstop1h 49m

Seattle/Tacoma Intl

Tue 5/20

7:30 am-10:06 am

Nonstop1h 36m

$137

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Tue 5/13

6:30 am-7:07 am

Nonstop1h 37m

Seattle/Tacoma Intl

Tue 5/20

6:00 am-1:37 pm

1 stop6h 37m

$154

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Thu 5/15

2:57 pm-12:44 am

1 stop10h 47m

Seattle/Tacoma Intl

Sun 5/18

6:05 am-1:37 pm

1 stop6h 32m

$160

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Sat 5/17

3:15 pm-8:10 pm

1 stop5h 55m

Seattle/Tacoma Intl

Sun 5/18

6:45 am-4:05 pm

1 stop8h 20m

$172

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Tue 5/13

3:30 pm-7:55 pm

1 stop5h 25m

Seattle/Tacoma Intl

Tue 5/20

6:57 pm-9:16 pm

Nonstop1h 19m

$177

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Fri 5/2

1:52 pm-11:35 am

1 stop22h 43m

Seattle/Tacoma Intl

Sun 5/4

8:56 pm-12:57 pm

1 stop15h 01m

$213

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Sun 5/18

7:41 am-1:43 pm

1 stop7h 02m

Seattle/Tacoma Intl

Thu 6/5

9:45 am-4:41 pm

1 stop5h 56m

$214

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Mon 5/5

7:45 am-8:18 am

Nonstop1h 33m

Seattle/Tacoma Intl

Fri 5/9

9:25 pm-11:50 pm

Nonstop1h 25m

$217

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Wed 5/14

6:30 am-7:07 am

Nonstop1h 37m

$69

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Fri 5/16

7:49 pm-8:37 pm

Nonstop1h 48m

$79

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/15

Showing 1-10 of 16 results
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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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
Trip.comPrice 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 eDreams the most. eDreams 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?

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

Booking 52 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 $411). 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 April 16, 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 12% versus a flight at noon.

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 March 30, 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 April 16, 2025.

The most flights from BOI to SEA are scheduled on a Monday (66 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (44 on average).

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

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 April 16, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest and Delta from Boise to Seattle. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,876 reviews

Crew

8.5

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Food

7.1

Overall

8.0

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
9,876 reviews
Alaska Airlines
8.0
Very good
9,876 reviews

Crew

8.5

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Food

7.1

Overall

8.0

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
4,282 reviews
Alaska Airlines
8.0
Very good
9,876 reviews

Crew

8.5

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Food

7.1

Overall

8.0

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
7,916 reviews
Alaska Airlines
8.0
Very good
9,876 reviews

Crew

8.5

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Food

7.1

Overall

8.0

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
7.9
Good
2,380 reviews
Alaska Airlines
8.0
Very good
9,876 reviews

Crew

8.5

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Food

7.1

Overall

8.0

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
8,665 reviews
Alaska Airlines
8.0
Very good
9,876 reviews

Crew

8.5

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Food

7.1

Overall

8.0

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 29m for a nonstop flight. There are 54 flights from Air Term. Gowen Fld to Seattle per day from 4 airlines.

  • How popular is this Boise to Seattle flight route?

    Within the past month, 85 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 $137, 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 Alaska Airlines and Frontier - these airlines can fly you to your destination from $141 and $160, respectively. Delta is 33% 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 Delta, which is currently one of the cheapest options available, starting at $69. Frontier flights start at $83 while deals on Southwest start at $89 one-way.

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

    Consider Air France (99%), Delta (93%) 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 $1,176 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 $131.

  • 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 $411). 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
Renton
Lakewood
Ocean Shores
Lacey
Leavenworth
Federal Way
Olympia
Shoreline
Cle Elum
Centralia
Aberdeen
Kent
Lynnwood
Shelton
Silverdale
Redmond
Issaquah

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Top 4 airlines flying from Boise to Seattle

Discover the top 4 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 April 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$98Average$164FlexibilityNo cancel feeOn-time65%
DeltaCheapest$117Average$196FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$128Average$221FlexibilityNo cancel feeOn-time75%
Hawaiian AirlinesCheapest$137Average$177FlexibilityNo cancel feeOn-time85%

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