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$67+ Cheap flights from Seattle (SEA) to Idaho

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 6/7. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BOI
Apr 21 — Apr 281
Mon 4/21
Mon 4/28
1 adult, Economy
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Cheap flight deals from Seattle to Idaho

Keep the following information in mind while searching for Seattle to Idaho flight deals. Data was last updated April 16, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$127
(iWofly)

One-way from

$67
(Trip.com)

Popular in

December

Cheapest in

January

Average price

$227

Good round-trip deal

$157 or less

Good one-way deal

$78 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-Boise Air Term. Gowen Fld flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Boise Air Term. Gowen Fld flights.
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From Seattle/Tacoma Intl to Idaho
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One-way flight from Seattle/Tacoma Intl to Idaho
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Highest demand for flights based on searches. 7% potential increase in price ($19 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($5 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 Seattle/Tacoma Intl to Idaho.
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Price to beat on a one-way flight from Seattle/Tacoma Intl to Idaho.
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Find flight deals from Seattle to Idaho

Cheapest flights from Seattle to Idaho
Explore the most affordable flight options available from Seattle to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 16, 2025.

This iWofly 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 iWofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/1010:56 pmSEA - GEG
Nonstop1h 03mMultiple Airlines
Tue 5/135:00 amGEG - SEA
Nonstop1h 11mMultiple Airlines
Deal found 4/15$127
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/319:26 pmSEA - GEG
Nonstop0h 59mHawaiian Airlines
Sat 6/78:27 amGEG - SEA
Nonstop1h 08mHawaiian Airlines
Deal found 4/15$128
This iWofly 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 iWofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/312:38 pmSEA - GEG
Nonstop0h 58mAlaska Airlines
Sat 6/71:45 pmGEG - SEA
Nonstop1h 10mAlaska Airlines
Deal found 4/16$129
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/317:55 pmSEA - BOI
Nonstop1h 34mDelta
Sat 6/74:59 pmBOI - SEA
Nonstop1h 36mDelta
Deal found 4/16$137
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 5/67:10 amSEA - GEG
Nonstop1h 15mDelta
Wed 5/77:25 pmGEG - SEA
Nonstop1h 25mDelta
Deal found 4/15$137
This Trip.com 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/319:51 amSEA - BOI
Nonstop1h 31mHawaiian Airlines
Sat 6/77:45 amBOI - SEA
1 stop3h 54mHawaiian Airlines
Deal found 4/16$138
This Trip.com 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/301:37 pmSEA - BOI
Nonstop1h 18mMultiple Airlines
Fri 6/65:39 pmBOI - SEA
Nonstop1h 30mMultiple Airlines
Deal found 4/15$153
This Trip.com 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/302:25 pmSEA - BOI
Nonstop1h 29mAlaska Airlines
Fri 6/68:59 pmBOI - SEA
Nonstop1h 31mAlaska Airlines
Deal found 4/15$154
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.
Wed 6/116:05 pmSEA - BOI
1 stop5h 20mSouthwest
Thu 6/126:25 pmBOI - SEA
1 stop5h 40mSouthwest
Deal found 4/15$167
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.
Thu 6/53:20 pmSEA - BOI
1 stop19h 01mSpirit Airlines
Mon 6/912:16 pmBOI - SEA
1 stop27h 09mSpirit Airlines
Deal found 4/15$173
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.
Fri 5/307:10 amSEA - SUN
1 stop3h 47mDelta
Mon 6/27:30 amSUN - SEA
1 stop5h 54mDelta
Deal found 4/15$197
This Alaska Airlines deal was found by Cheapflights users on 4/14. 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 5/137:55 pmSEA - IDA
Nonstop1h 41mAlaska Airlines
Tue 5/204:20 pmIDA - SEA
Nonstop1h 54mAlaska Airlines
Deal found 4/14$197

Cheapflights Fare Finder

Customize your flight search to find flights from Seattle to Idaho 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 Seattle to Idaho that are best for you.

Fly from

Seattle

Fly to

Idaho

Route

Depart

Return

Price

SeattleSpokane

SEA - GEG

SEAGEG

Seattle/Tacoma Intl

Sat 5/10

10:56 pm-11:59 pm

Nonstop1h 03m

Spokane

Tue 5/13

5:00 am-6:11 am

Nonstop1h 11m

$127

SeattleSpokane

SEA - GEG

SEAGEG

Seattle/Tacoma Intl

Sat 5/31

9:26 pm-10:25 pm

Nonstop0h 59m

Spokane

Sat 6/7

8:27 am-9:35 am

Nonstop1h 08m

$128

SeattleSpokane

SEA - GEG

SEAGEG

Seattle/Tacoma Intl

Sat 5/31

2:38 pm-3:36 pm

Nonstop0h 58m

Spokane

Sat 6/7

1:45 pm-2:55 pm

Nonstop1h 10m

$129

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Sat 5/31

7:55 pm-10:29 pm

Nonstop1h 34m

Boise Air Term. Gowen Fld

Sat 6/7

4:59 pm-5:35 pm

Nonstop1h 36m

$137

SeattleSpokane

SEA - GEG

SEAGEG

Seattle/Tacoma Intl

Tue 5/6

1:40 pm-2:54 pm

Nonstop1h 14m

Spokane

Wed 5/7

7:15 am-8:28 am

Nonstop1h 13m

$137

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Sat 5/31

9:51 am-12:22 pm

Nonstop1h 31m

Boise Air Term. Gowen Fld

Sat 6/7

7:45 am-10:39 am

1 stop3h 54m

$138

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Fri 5/30

1:37 pm-3:55 pm

Nonstop1h 18m

Boise Air Term. Gowen Fld

Fri 6/6

5:39 pm-6:09 pm

Nonstop1h 30m

$153

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Fri 5/30

2:25 pm-4:54 pm

Nonstop1h 29m

Boise Air Term. Gowen Fld

Fri 6/6

8:59 pm-9:30 pm

Nonstop1h 31m

$154

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Wed 6/11

6:05 pm-12:25 am

1 stop5h 20m

Boise Air Term. Gowen Fld

Thu 6/12

6:25 pm-11:05 pm

1 stop5h 40m

$167

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Thu 6/5

3:20 pm-11:21 am

1 stop19h 01m

Boise Air Term. Gowen Fld

Mon 6/9

12:16 pm-2:25 pm

1 stop27h 09m

$173

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/16

Showing 1-10 of 60 results
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Best time to book a flight from Seattle to Idaho

Have a flexible travel schedule? Discover the best time to fly to Idaho from Seattle 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 Seattle to Idaho

What is the cheapest month to book a flight from Seattle to Idaho?

Currently, October is the cheapest month in which you can book a flight from Seattle to Idaho (average of $314). Flying from Seattle to Idaho in June is currently the most expensive (average of $419). 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 SEA to ID?

Find hourly flight availability from Seattle to Idaho. 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.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Idaho as you normally would.

Weekly flight availability from Seattle to Idaho

Explore weekly flight availability from Seattle to Idaho. 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 SEA to USID are scheduled on a Monday (59 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (39 on average).

Rainfall in Idaho by month

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

In terms of precipitation, rainfall in Idaho ranges from 0.2 - 1.6 inches per month. December is typically the wettest month, when rainfall can reach 1.6 in. August is typically the driest time to visit Idaho when rainfall is around 0.2 in.

Temperature in Idaho by month

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

If weather is an important factor for your trip to Idaho, 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 75.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 30.2 F).

Reviews of airlines servicing Idaho

Get insights into the airlines that provide service to Idaho. 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 Idaho. Reviews last updated April 16, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest and Delta from Seattle to Idaho by reading reviews from past customers. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,876 reviews

Entertainment

7.1

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Alaska Airlines
8.0
Very good
9,876 reviews
Alaska Airlines
8.0
Very good
9,876 reviews

Entertainment

7.1

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Southwest
8.0
Very good
4,282 reviews
Alaska Airlines
8.0
Very good
9,876 reviews

Entertainment

7.1

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Delta
8.0
Very good
7,916 reviews
Alaska Airlines
8.0
Very good
9,876 reviews

Entertainment

7.1

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Hawaiian Airlines
7.9
Good
2,380 reviews
Alaska Airlines
8.0
Very good
9,876 reviews

Entertainment

7.1

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
United Airlines
7.4
Good
8,665 reviews
Alaska Airlines
8.0
Very good
9,876 reviews

Entertainment

7.1

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥

Related info for your journey

Find useful and relevant information for your journey from Seattle to Idaho. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Seattle to Idaho?

    Located just 11.4 mi from the city center, Seattle/Tacoma Intl (SEA) is the airport most travelers will use when flying to Idaho from Seattle.

  • How popular is this Seattle to Idaho flight route?

    This flight path from Seattle/Tacoma Intl to Idaho was viewed by 18 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • What are the cheapest airlines to fly from Seattle to Idaho one-way?

    The cheapest airlines for a one-way flight from Seattle to Idaho are Alaska Airlines ($67), Hawaiian Airlines ($69), and Delta ($79).

  • What are the most popular routes from Seattle to Idaho?

    When deciding which route to take from Seattle to Idaho consider Seattle/Tacoma Intl - Boise Air Term. Gowen Fld, Seattle/Tacoma Intl - Spokane or Seattle/Tacoma Intl - Idaho Falls Fanning Field as they are the most popular.

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

    Consider KLM (85%), Aeromexico (84%) or Delta (83%) when booking your flight. These represent the most reliable airlines when flying from Seattle to Idaho.

  • What are the cheapest flights from Seattle to Idaho?

    Looking for the cheapest flight from Seattle to Idaho? While on average our users pay $245, our data indicates the cheapest price to be $68. The most popular route (Seattle/Tacoma Intl - Boise Air Term. Gowen Fld), is priced around $131.

  • Can I find deals for flights from Seattle to Idaho that include hotel bookings?

    Yes. In addition to deals on Seattle to Idaho flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Idaho?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Idaho.

  • Can I find deals for business class flights from Seattle to Idaho?

    Yes. Cheapflights offers flight deals from Seattle to Idaho 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 Seattle to Idaho?

    Currently, October is the cheapest month in which you can book a flight from Seattle to Idaho (average of $314). Flying from Seattle to Idaho in June is currently the most expensive (average of $419). 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.

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Top 3 airlines flying from Seattle to Idaho

Discover the top 3 airlines that operate flights from Seattle to Idaho. 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
Hawaiian AirlinesCheapest$88Average$217FlexibilityNo cancel feeOn-time85%
DeltaCheapest$98Average$362FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$139Average$321FlexibilityNo cancel feeOn-time75%

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