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$54+ Cheap flights from Idaho to Seattle (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 1/20. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SEA
Jan 22 — Jan 291
Thu 1/22
Thu 1/29
1 adult, Economy
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Cheap flight deals from Idaho to Seattle

Cheapest flights from Idaho to Seattle
Explore the most affordable flight options available from Idaho to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 23, 2025.

This Alaska Airlines deal was found by Cheapflights users on 12/22. 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.
Fri 12/265:30 amGEG - SEA
Nonstop1h 27mAlaska Airlines
Tue 1/138:17 pmSEA - GEG
Nonstop1h 08mAlaska Airlines
Deal found 12/22$333
This Delta deal was found by Cheapflights users on 12/20. 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.
Tue 12/237:15 amLWS - SEA
Nonstop1h 32mDelta
Sat 1/39:20 pmSEA - LWS
Nonstop1h 10mDelta
Deal found 12/20$339
This Alaska Airlines deal was found by Cheapflights users on 12/22. 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.
Fri 12/266:05 amGEG - SEA
1 stop4h 33mAlaska Airlines
Mon 1/129:59 amSEA - GEG
Nonstop1h 13mAlaska Airlines
Deal found 12/22$353
This Delta deal was found by Cheapflights users on 12/20. 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.
Sun 12/217:15 amLWS - SEA
Nonstop1h 32mDelta
Sun 12/289:20 pmSEA - LWS
Nonstop1h 10mDelta
Deal found 12/20$359
This Expedia deal was found by Cheapflights users on 12/22. 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.
Wed 12/244:49 pmGEG - SEA
Nonstop1h 17mAlaska Airlines
Wed 1/289:59 amSEA - GEG
Nonstop1h 13mAlaska Airlines
Deal found 12/22$373
This Delta deal was found by Cheapflights users on 12/22. 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.
Mon 12/295:40 amBOI - SEA
Nonstop1h 57mDelta
Thu 1/112:15 pmSEA - BOI
Nonstop1h 34mDelta
Deal found 12/22$377
This Delta deal was found by Cheapflights users on 12/22. 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 12/315:00 amGEG - SEA
Nonstop1h 23mDelta
Sun 1/41:36 pmSEA - GEG
Nonstop1h 15mDelta
Deal found 12/22$377
This Alaska Airlines deal was found by Cheapflights users on 12/22. 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.
Fri 12/266:05 amGEG - SEA
1 stop6h 32mAlaska Airlines
Wed 1/146:39 pmSEA - GEG
1 stop3h 30mAlaska Airlines
Deal found 12/22$381
This Alaska Airlines deal was found by Cheapflights users on 12/21. 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.
Mon 12/294:16 pmBOI - SEA
1 stop3h 13mAlaska Airlines
Wed 12/3111:16 amSEA - BOI
1 stop4h 45mAlaska Airlines
Deal found 12/21$396
This Alaska Airlines deal was found by Cheapflights users on 12/22. 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.
Mon 12/296:08 amBOI - SEA
Nonstop1h 52mAlaska Airlines
Thu 1/19:57 amSEA - BOI
1 stop6h 04mAlaska Airlines
Deal found 12/22$407
This Delta deal was found by Cheapflights users on 12/21. 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.
Mon 12/295:40 amBOI - SEA
Nonstop1h 57mDelta
Wed 12/317:45 amSEA - BOI
Nonstop1h 35mDelta
Deal found 12/21$417
This Alaska Airlines deal was found by Cheapflights users on 12/20. 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.
Mon 12/291:42 pmGEG - SEA
Nonstop1h 17mAlaska Airlines
Sat 1/311:36 amSEA - GEG
Nonstop1h 12mAlaska Airlines
Deal found 12/20$417

Find flight deals from Idaho to Seattle

Keep the following information in mind while searching for Idaho to Seattle flight deals. Data was last updated December 23, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$99
(Delta)

One-way from

$54
(Kiwi.com)

Popular in

March

Cheapest in

January

Average price

$197

Good round-trip deal

$238 or less

Good one-way deal

$148 or less
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Seattle/Tacoma Intl flights.
Search Deals
From Idaho to Seattle/Tacoma Intl
Search Deals
One-way flight from Idaho to Seattle/Tacoma Intl
Search Deals
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($2 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Idaho to Seattle/Tacoma Intl.
Search Deals
Price to beat on a one-way flight from Idaho to Seattle/Tacoma Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Idaho 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 December 23, 2025.
Use the filters below to find and compare flights from Idaho to Seattle that are best for you.

Fly from

Idaho

Fly to

Seattle

Route

Depart

Return

Price

SpokaneSeattle

GEG - SEA

GEGSEA

Spokane

Sat 1/10

3:40 pm-4:59 pm

Nonstop1h 19m

Seattle/Tacoma Intl

Tue 1/13

10:55 pm-12:08 am

Nonstop1h 13m

$99

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Tue 1/13

5:55 pm-6:33 pm

Nonstop1h 38m

Seattle/Tacoma Intl

Tue 1/13

9:36 pm-11:59 pm

Nonstop1h 23m

$113

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Tue 1/27

5:40 am-6:36 am

Nonstop1h 56m

Seattle/Tacoma Intl

Thu 1/29

3:59 pm-6:28 pm

Nonstop1h 29m

$119

SpokaneSeattle

GEG - SEA

GEGSEA

Spokane

Thu 2/12

7:06 pm-8:23 pm

Nonstop1h 17m

Seattle/Tacoma Intl

Sat 2/14

9:50 pm-11:01 pm

Nonstop1h 11m

$119

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Mon 2/23

5:15 pm-6:06 pm

Nonstop1h 51m

Seattle/Tacoma Intl

Wed 2/25

5:50 pm-8:15 pm

Nonstop1h 25m

$119

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Sun 3/22

10:35 am-11:20 am

Nonstop1h 45m

Seattle/Tacoma Intl

Wed 3/25

9:29 pm-11:54 pm

Nonstop1h 25m

$119

SpokaneSeattle

GEG - SEA

GEGSEA

Spokane

Tue 2/3

9:20 am-10:43 am

Nonstop1h 23m

Seattle/Tacoma Intl

Thu 2/5

9:35 pm-10:52 pm

Nonstop1h 17m

$119

SpokaneSeattle

GEG - SEA

GEGSEA

Spokane

Sun 2/8

7:20 am-8:55 am

Nonstop1h 35m

Seattle/Tacoma Intl

Mon 2/9

10:55 pm-11:59 pm

Nonstop1h 04m

$119

SpokaneSeattle

GEG - SEA

GEGSEA

Spokane

Tue 2/3

9:20 am-10:43 am

Nonstop1h 23m

Seattle/Tacoma Intl

Wed 2/4

7:45 pm-8:58 pm

Nonstop1h 13m

$119

HaileySeattle

SUN - SEA

SUNSEA

Hailey Sun Valley-Friedman

Thu 1/15

12:55 pm-6:29 pm

1 stop6h 34m

Seattle/Tacoma Intl

Sun 1/18

5:25 am-12:13 pm

1 stop5h 48m

$119

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/22

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

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

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

Currently, January is the cheapest month in which you can book a flight from Idaho to Seattle (average of $99). Flying from Idaho to Seattle in March is currently the most expensive (average of $137). 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 ID to SEA?

Find hourly flight availability from Idaho 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 December 23, 2025.

It’s optimal to fly from Idaho to Seattle in the evening. By choosing this option you can save up to 37% on the cost of your flight, compared to a flight in the afternoon.

What is the cheapest day to fly from Idaho to Seattle?

Use this chart to determine the cheapest time to fly round-trip from Idaho to Seattle. Price data was last updated on December 20, 2025.

Travelers seeking maximum savings on their Idaho to Seattle flight should consider departing on Thursday at noon when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Idaho to Seattle

Explore weekly flight availability from Idaho 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 December 23, 2025.

The most flights from USID to SEA are scheduled on a Saturday (59 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (42 on average).

Related info for your journey

Find useful and relevant information for your journey from Idaho to Seattle. 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 into for flights to Seattle from Idaho?

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

  • How popular is this Idaho to Seattle flight route?

    This flight path from Idaho to Seattle/Tacoma Intl was viewed by 82 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Idaho to Seattle?

    There are many flights that can get you from Idaho to Seattle in 1h 19m. Fly via Delta, Alaska Airlines, or Hawaiian Airlines to get the fastest option. Airlines will cover a distance of 223 mi. All flights are typically nonstop.

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

    One-way options have recently been found by users for as low as $68 on Hawaiian Airlines. Other airlines that offer cheap prices include Delta from $68 and Alaska Airlines from $69 one-way.

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

    Most travelers choose Boise Air Term. Gowen Fld - Seattle/Tacoma Intl, Spokane - Seattle/Tacoma Intl or Idaho Falls Fanning Field - Seattle/Tacoma Intl when deciding on the best route from Idaho to Seattle.

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

    No one likes to see their flight delayed. When booking a flight from Idaho to Seattle consider choosing Air France (100%), Virgin Atlantic (95%) or Aeromexico (90%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Idaho to Seattle?

    The cheapest flight price from Idaho to Seattle is $88. On average you can expect to pay $1,246. The most popular route, (Boise Air Term. Gowen Fld - Seattle/Tacoma Intl), can usually be booked for $68.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Idaho to Seattle (average of $99). Flying from Idaho to Seattle in March is currently the most expensive (average of $137). 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
Tacoma
SeaTac
Lakewood
Ocean Shores
Olympia
Edmonds
Lynnwood
Renton
Puyallup
Kirkland
Kent
Tukwila
Cle Elum
Marysville
Fife
Aberdeen
Shoreline
Centralia
Federal Way
Chehalis

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Top 3 airlines flying from Idaho to Seattle

Discover the top 3 airlines that operate flights from Idaho 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 December 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$99Average$268FlexibilityNo cancel feeOn-time75%
DeltaCheapest$117Average$327FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$117Average$242FlexibilityNo cancel feeOn-time85%

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