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$59+ 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 5/14. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SEA
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
1 adult, Economy
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Cheap flight deals from Idaho to Seattle

Keep the following information in mind while searching for Idaho to Seattle flight deals. Data was last updated March 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$141
(Alaska Airlines)

One-way from

$59
(Delta)

Popular in

March

Cheapest in

October

Average price

$249

Good round-trip deal

$311 or less

Good one-way deal

$153 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 Idaho to Seattle/Tacoma Intl
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One-way flight from Idaho to Seattle/Tacoma Intl
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High demand for flights, 1% potential price rise
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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 March 2025
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Price to beat on a round-trip flight from Idaho to Seattle/Tacoma Intl.
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Price to beat on a one-way flight from Idaho to Seattle/Tacoma Intl.
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Find 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 March 28, 2025.

This Alaska Airlines deal was found by Cheapflights users on 3/26. 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 4/297:00 amBOI - SEA
1 stop3h 55mAlaska Airlines
Tue 4/291:23 pmSEA - BOI
Nonstop1h 22mAlaska Airlines
Deal found 3/26$141
This Trip.com deal was found by Cheapflights users on 3/25. 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 4/261:25 pmGEG - SEA
Nonstop1h 05mHawaiian Airlines
Sun 5/49:59 pmSEA - GEG
Nonstop1h 05mHawaiian Airlines
Deal found 3/25$143
This Delta deal was found by Cheapflights users on 3/26. 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 4/262:20 pmBOI - SEA
Nonstop1h 35mDelta
Thu 5/17:10 amSEA - BOI
Nonstop1h 36mDelta
Deal found 3/26$147
This Alaska Airlines deal was found by Cheapflights users on 3/26. 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 4/167:30 pmGEG - SEA
Nonstop1h 05mAlaska Airlines
Sat 4/262:33 pmSEA - GEG
1 stop3h 04mAlaska Airlines
Deal found 3/26$147
This Hawaiian Airlines deal was found by Cheapflights users on 3/27. 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 6/47:45 amBOI - SEA
1 stop3h 54mHawaiian Airlines
Wed 6/113:51 pmSEA - BOI
1 stop5h 07mHawaiian Airlines
Deal found 3/27$156
This Delta deal was found by Cheapflights users on 3/26. 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 4/256:15 amGEG - SEA
Nonstop1h 25mDelta
Mon 4/287:30 pmSEA - GEG
Nonstop1h 14mDelta
Deal found 3/26$157
This Southwest deal was found by Cheapflights users on 3/26. 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 5/77:15 amBOI - SEA
1 stop8h 00mSouthwest
Wed 5/75:25 pmSEA - BOI
1 stop4h 30mSouthwest
Deal found 3/26$162
This Expedia deal was found by Cheapflights users on 3/27. 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.
Fri 5/21:52 pmBOI - SEA
1 stop6h 59mMultiple Airlines
Sun 5/49:55 amSEA - BOI
Nonstop1h 21mMultiple Airlines
Deal found 3/27$171
This Kissandfly.com deal was found by Cheapflights users on 3/26. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/196:15 amGEG - SEA
1 stop4h 04mMultiple Airlines
Sun 4/205:57 pmSEA - GEG
1 stop4h 03mMultiple Airlines
Deal found 3/26$173
This United Airlines deal was found by Cheapflights users on 3/27. 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.
Thu 4/247:00 pmBOI - SEA
1 stop6h 58mUnited Airlines
Mon 4/285:15 amSEA - BOI
1 stop5h 09mUnited Airlines
Deal found 3/27$177
This Alaska Airlines deal was found by Cheapflights users on 3/25. 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 4/234:35 pmIDA - SEA
Nonstop1h 52mAlaska Airlines
Wed 4/301:17 pmSEA - IDA
Nonstop1h 41mAlaska Airlines
Deal found 3/25$187
This Delta deal was found by Cheapflights users on 3/27. 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 5/166:15 amLWS - SEA
Nonstop1h 34mDelta
Sat 5/177:45 pmSEA - LWS
Nonstop1h 18mDelta
Deal found 3/27$189

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 March 28, 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

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Tue 4/29

7:00 am-9:55 am

1 stop3h 55m

Seattle/Tacoma Intl

Tue 4/29

1:23 pm-3:45 pm

Nonstop1h 22m

$141

SpokaneSeattle

GEG - SEA

GEGSEA

Spokane

Sat 4/26

1:25 pm-2:30 pm

Nonstop1h 05m

Seattle/Tacoma Intl

Sun 5/4

9:59 pm-11:04 pm

Nonstop1h 05m

$143

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Sat 4/26

7:15 pm-7:56 pm

Nonstop1h 41m

Seattle/Tacoma Intl

Mon 4/28

4:55 pm-7:20 pm

Nonstop1h 25m

$147

SpokaneSeattle

GEG - SEA

GEGSEA

Spokane

Wed 4/16

7:30 pm-8:35 pm

Nonstop1h 05m

Seattle/Tacoma Intl

Sat 4/26

2:33 pm-5:37 pm

1 stop3h 04m

$147

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Wed 6/4

7:45 am-10:39 am

1 stop3h 54m

Seattle/Tacoma Intl

Wed 6/11

3:51 pm-9:58 pm

1 stop5h 07m

$156

SpokaneSeattle

GEG - SEA

GEGSEA

Spokane

Fri 4/25

6:15 am-7:40 am

Nonstop1h 25m

Seattle/Tacoma Intl

Sun 4/27

10:55 pm-11:59 pm

Nonstop1h 04m

$157

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Wed 5/7

7:15 am-2:15 pm

1 stop8h 00m

Seattle/Tacoma Intl

Wed 5/7

5:25 pm-10:55 pm

1 stop4h 30m

$162

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Fri 5/2

1:52 pm-7:51 pm

1 stop6h 59m

Seattle/Tacoma Intl

Sun 5/4

9:55 am-12:16 pm

Nonstop1h 21m

$171

SpokaneSeattle

GEG - SEA

GEGSEA

Spokane

Sat 4/19

6:15 am-10:19 am

1 stop4h 04m

Seattle/Tacoma Intl

Sun 4/20

5:57 pm-10:00 pm

1 stop4h 03m

$173

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Thu 4/24

7:00 pm-12:58 am

1 stop6h 58m

Seattle/Tacoma Intl

Mon 4/28

5:15 am-11:24 am

1 stop5h 09m

$177

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/26

Showing 1-10 of 58 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 $238). Flying from Idaho 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 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 March 28, 2025.

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

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 March 28, 2025.

The most flights from USID to SEA are scheduled on a Thursday (58 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (32 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 March 28, 2025.
See what other customers who have flown with Southwest, Alaska Airlines and Delta from Idaho to Seattle have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,273 reviews

Crew

8.6

Boarding

8.2

Overall

8.1

Food

7.1

Comfort

8.1

Entertainment

7.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.1
Very good
4,273 reviews
Southwest
8.1
Very good
4,273 reviews

Crew

8.6

Boarding

8.2

Overall

8.1

Food

7.1

Comfort

8.1

Entertainment

7.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Alaska Airlines
8.0
Very good
9,798 reviews
Southwest
8.1
Very good
4,273 reviews

Crew

8.6

Boarding

8.2

Overall

8.1

Food

7.1

Comfort

8.1

Entertainment

7.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Delta
8.0
Very good
7,896 reviews
Southwest
8.1
Very good
4,273 reviews

Crew

8.6

Boarding

8.2

Overall

8.1

Food

7.1

Comfort

8.1

Entertainment

7.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Hawaiian Airlines
7.9
Good
2,336 reviews
Southwest
8.1
Very good
4,273 reviews

Crew

8.6

Boarding

8.2

Overall

8.1

Food

7.1

Comfort

8.1

Entertainment

7.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
United Airlines
7.4
Good
8,603 reviews
Southwest
8.1
Very good
4,273 reviews

Crew

8.6

Boarding

8.2

Overall

8.1

Food

7.1

Comfort

8.1

Entertainment

7.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

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 85 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 Idaho to Seattle one-way?

    One-way options have recently been found by users for as low as $59 on Delta. Other airlines that offer cheap prices include Hawaiian Airlines from $67 and Alaska Airlines from $73 one-way.

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

    Most travelers choose Spokane - Seattle/Tacoma Intl, Boise Air Term. Gowen Fld - 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 Delta (89%), Horizon Air (88%) or Aeromexico (86%) 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 $1,439. The most popular route, (Spokane - Seattle/Tacoma Intl), can usually be booked for $117.

  • 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 $238). Flying from Idaho 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 Idaho?

Book flights to Idaho if you plan to visit one of these locations
SeaTac
Tukwila
Tacoma
Lakewood
Renton
Lacey
Ocean Shores
Leavenworth
Federal Way
Olympia
Cle Elum
Centralia
Mukilteo
Aberdeen
Shoreline
Lynnwood
Shelton
Silverdale
Redmond
Monroe

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Alternative routes for Idaho to Seattle

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Top 4 airlines flying from Idaho to Seattle

Discover the top 4 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 March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$98Average$180FlexibilityNo cancel feeOn-time65%
DeltaCheapest$117Average$380FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$127Average$277FlexibilityNo cancel feeOn-time75%
Hawaiian AirlinesCheapest$137Average$177FlexibilityNo cancel feeOn-time85%
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