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$69+ 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 3/18. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BOI
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
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 February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$157
(Delta)

One-way from

$69
(Delta)

Popular in

December

Cheapest in

January

Average price

$212

Good round-trip deal

$177 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. 4% potential increase in price ($12 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in February 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 February 20, 2025.

This Delta deal was found by Cheapflights users on 2/20. 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.
Thu 3/279:20 pmSEA - LWS
Nonstop1h 12mDelta
Sun 3/307:13 amLWS - SEA
Nonstop1h 27mDelta
Deal found 2/20$149
This Delta deal was found by Cheapflights users on 2/20. 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.
Wed 3/269:20 pmSEA - BOI
Nonstop1h 26mDelta
Sun 3/305:45 amBOI - SEA
Nonstop1h 43mDelta
Deal found 2/20$157
This Hawaiian Airlines deal was found by Cheapflights users on 2/20. 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.
Wed 3/198:59 pmSEA - GEG
Nonstop0h 57mHawaiian Airlines
Wed 3/266:00 amGEG - SEA
Nonstop1h 09mHawaiian Airlines
Deal found 2/20$157
This Southwest deal was found by Cheapflights users on 2/19. 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 3/105:45 amSEA - BOI
1 stop5h 25mSouthwest
Wed 3/127:35 amBOI - SEA
2 stops10h 25mSouthwest
Deal found 2/19$162
This Alaska Airlines deal was found by Cheapflights users on 2/19. 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 5/79:59 pmSEA - GEG
Nonstop1h 05mAlaska Airlines
Mon 5/125:00 amGEG - SEA
Nonstop1h 11mAlaska Airlines
Deal found 2/19$166
This Delta deal was found by Cheapflights users on 2/19. 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.
Wed 5/79:25 amSEA - GEG
Nonstop1h 09mDelta
Sun 5/116:10 amGEG - SEA
Nonstop1h 22mDelta
Deal found 2/19$167
This Kiwi.com deal was found by Cheapflights users on 2/20. 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 3/298:15 pmSEA - BOI
Nonstop1h 26mHawaiian Airlines
Sun 3/306:37 amBOI - SEA
Nonstop1h 33mHawaiian Airlines
Deal found 2/20$169
This Trip.com deal was found by Cheapflights users on 2/20. 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.
Wed 4/210:03 amSEA - GEG
1 stop4h 11mMultiple Airlines
Wed 4/98:36 pmGEG - SEA
Nonstop1h 05mMultiple Airlines
Deal found 2/20$180
This SmartFares deal was found by Cheapflights users on 2/20. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/37:04 amSEA - SUN
Nonstop1h 39mAlaska Airlines
Sun 4/610:25 amSUN - SEA
Nonstop1h 39mAlaska Airlines
Deal found 2/20$181
This Hawaiian Airlines deal was found by Cheapflights users on 2/19. 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.
Wed 3/127:55 pmSEA - IDA
Nonstop1h 41mHawaiian Airlines
Tue 3/258:00 amIDA - SEA
Nonstop1h 58mHawaiian Airlines
Deal found 2/19$187
This Alaska Airlines deal was found by Cheapflights users on 2/20. 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 4/211:26 amSEA - BOI
Nonstop1h 26mAlaska Airlines
Wed 4/26:40 pmBOI - SEA
1 stop26h 47mAlaska Airlines
Deal found 2/20$190
This Hawaiian Airlines deal was found by Cheapflights users on 2/20. 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.
Tue 4/17:04 amSEA - SUN
Nonstop1h 39mHawaiian Airlines
Thu 4/310:25 amSUN - SEA
Nonstop1h 39mHawaiian Airlines
Deal found 2/20$197

Find flights from Seattle to Idaho within your budget

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 February 20, 2025.

Fly from

Seattle

Fly to

Idaho

Route

Depart

Return

Price

SeattleLewiston

SEA - LWS

SEALWS

Seattle/Tacoma Intl

Thu 3/27

9:20 pm-10:32 pm

Nonstop1h 12m

Lewiston Nez Perce Rgnl

Sun 3/30

7:13 am-8:40 am

Nonstop1h 27m

$149

SeattleSpokane

SEA - GEG

SEAGEG

Seattle/Tacoma Intl

Wed 3/19

9:59 pm-11:04 pm

Nonstop1h 05m

Spokane

Wed 3/26

6:00 am-7:09 am

Nonstop1h 09m

$157

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Wed 3/26

9:20 pm-11:46 pm

Nonstop1h 26m

Boise Air Term. Gowen Fld

Sun 3/30

5:45 am-6:28 am

Nonstop1h 43m

$157

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Mon 3/10

5:45 am-12:10 pm

1 stop5h 25m

Boise Air Term. Gowen Fld

Wed 3/12

7:35 am-5:00 pm

2 stops10h 25m

$162

SeattleSpokane

SEA - GEG

SEAGEG

Seattle/Tacoma Intl

Wed 5/7

9:59 pm-11:04 pm

Nonstop1h 05m

Spokane

Mon 5/12

5:00 am-6:11 am

Nonstop1h 11m

$166

SeattleSpokane

SEA - GEG

SEAGEG

Seattle/Tacoma Intl

Wed 5/7

9:25 am-10:34 am

Nonstop1h 09m

Spokane

Sun 5/11

6:10 am-7:32 am

Nonstop1h 22m

$167

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Sat 3/29

8:15 pm-10:41 pm

Nonstop1h 26m

Boise Air Term. Gowen Fld

Sun 3/30

6:37 am-7:10 am

Nonstop1h 33m

$169

SeattleSpokane

SEA - GEG

SEAGEG

Seattle/Tacoma Intl

Wed 4/2

10:03 am-2:14 pm

1 stop4h 11m

Spokane

Wed 4/9

8:36 pm-9:41 pm

Nonstop1h 05m

$180

SeattleHailey

SEA - SUN

SEASUN

Seattle/Tacoma Intl

Thu 4/3

7:04 am-9:43 am

Nonstop1h 39m

Hailey Sun Valley-Friedman

Sun 4/6

10:25 am-11:04 am

Nonstop1h 39m

$181

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Wed 3/12

7:55 pm-10:36 pm

Nonstop1h 41m

Idaho Falls Fanning Field

Tue 3/25

8:00 am-8:58 am

Nonstop1h 58m

$187

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 59 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.

Travel insights for flights from Seattle to Idaho

Get recent, data-driven insights about flights from Seattle to Idaho including ideal travel times, pricing trends, and more.

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 $436). 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 February 20, 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 February 20, 2025.

The most flights from SEA to USID are scheduled on a Thursday (51 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (27 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 February 20, 2025.
Get a feel of what it's like to fly with Southwest, Alaska Airlines 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.
Southwest
8.1
Very good
4,411 reviews

Food

7.1

Crew

8.7

Entertainment

7.6

Boarding

8.2

Comfort

8.1

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Southwest
8.1
Very good
4,411 reviews
Southwest
8.1
Very good
4,411 reviews

Food

7.1

Crew

8.7

Entertainment

7.6

Boarding

8.2

Comfort

8.1

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Alaska Airlines
8.0
Very good
9,697 reviews
Southwest
8.1
Very good
4,411 reviews

Food

7.1

Crew

8.7

Entertainment

7.6

Boarding

8.2

Comfort

8.1

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Delta
8.0
Very good
8,219 reviews
Southwest
8.1
Very good
4,411 reviews

Food

7.1

Crew

8.7

Entertainment

7.6

Boarding

8.2

Comfort

8.1

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Hawaiian Airlines
7.9
Good
2,317 reviews
Southwest
8.1
Very good
4,411 reviews

Food

7.1

Crew

8.7

Entertainment

7.6

Boarding

8.2

Comfort

8.1

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

United Airlines
7.4
Good
8,765 reviews
Southwest
8.1
Very good
4,411 reviews

Food

7.1

Crew

8.7

Entertainment

7.6

Boarding

8.2

Comfort

8.1

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

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 20 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 Delta ($69), Alaska Airlines ($78), and Southwest ($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 - Spokane, Seattle/Tacoma Intl - Boise Air Term. Gowen Fld or Seattle/Tacoma Intl - Jackson Hole as they are the most popular.

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

    Consider WestJet (93%), Air France (90%) or KLM (87%) 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 $258, our data indicates the cheapest price to be $88. The most popular route (Seattle/Tacoma Intl - Spokane), is priced around $152.

  • 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 $436). 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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Alternative routes for Seattle to Idaho

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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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$98Average$364FlexibilityNo cancel feeOn-timeN/A
Spirit AirlinesCheapest$106Average$180FlexibilityNo cancel feeOn-time65%
Alaska AirlinesCheapest$146Average$311FlexibilityNo cancel feeOn-time75%
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