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$69+ 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 2/19. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SEA
Jan 26 — Feb 21
Sun 1/26
Sun 2/2
1 adult, Economy
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Cheap flight deals from Idaho to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Idaho (USID) 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 January 21, 2025.

Round-trip from

$137
(Delta)

One-way from

$69
(Alaska Airlines)

Good round-trip deal

$254 or less

Good one-way deal

$179 or less
From Idaho to Seattle/Tacoma Intl
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One-way flight from Idaho to Seattle/Tacoma Intl
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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 January 21, 2025.

This Delta deal was found by Cheapflights users on 1/21. 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.
Tue 2/185:15 pmBOI - SEA
Nonstop1h 47mDelta
Wed 2/197:20 amSEA - BOI
Nonstop1h 34mDelta
Deal found 1/21$137
This Mytrip deal was found by Cheapflights users on 1/21. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/187:41 pmBOI - SEA
1 stop5h 44mSpirit Airlines
Tue 2/255:15 amSEA - BOI
1 stop12h 31mSpirit Airlines
Deal found 1/21$153
This Travelocity deal was found by Cheapflights users on 1/20. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/277:41 pmBOI - SEA
1 stop5h 44mMultiple Airlines
Sun 3/28:15 pmSEA - BOI
Nonstop1h 26mMultiple Airlines
Deal found 1/20$155
This Delta deal was found by Cheapflights users on 1/20. 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 2/115:00 amGEG - SEA
Nonstop1h 23mDelta
Tue 2/187:20 amSEA - GEG
Nonstop1h 15mDelta
Deal found 1/20$157
This Alaska Airlines deal was found by Cheapflights users on 1/21. 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.
Sun 9/2811:35 amGEG - SEA
Nonstop1h 09mAlaska Airlines
Sun 9/283:50 pmSEA - GEG
Nonstop1h 04mAlaska Airlines
Deal found 1/21$172
This Alaska Airlines deal was found by Cheapflights users on 1/19. 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.
Fri 3/77:04 pmSUN - SEA
Nonstop1h 50mAlaska Airlines
Sun 3/93:43 pmSEA - SUN
Nonstop1h 36mAlaska Airlines
Deal found 1/19$177
This Alaska Airlines deal was found by Cheapflights users on 1/21. 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.
Tue 3/111:49 pmBOI - SEA
1 stop6h 14mAlaska Airlines
Tue 3/119:36 pmSEA - BOI
Nonstop1h 23mAlaska Airlines
Deal found 1/21$181
This Delta deal was found by Cheapflights users on 1/21. 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.
Thu 4/177:05 amLWS - SEA
Nonstop1h 21mDelta
Mon 4/219:20 pmSEA - LWS
Nonstop1h 13mDelta
Deal found 1/21$189
This United Airlines deal was found by Cheapflights users on 1/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/87:00 pmBOI - SEA
1 stop7h 38mUnited Airlines
Fri 4/113:24 pmSEA - BOI
1 stop5h 19mUnited Airlines
Deal found 1/20$196
This Alaska Airlines deal was found by Cheapflights users on 1/21. 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.
Thu 4/38:00 amIDA - SEA
Nonstop1h 58mAlaska Airlines
Tue 4/87:55 pmSEA - IDA
Nonstop1h 40mAlaska Airlines
Deal found 1/21$198
This United Airlines deal was found by Cheapflights users on 1/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/43:30 pmJAC - SEA
1 stop6h 45mUnited Airlines
Tue 3/115:00 amSEA - JAC
1 stop8h 27mUnited Airlines
Deal found 1/21$205
This Delta deal was found by Cheapflights users on 1/20. 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.
Mon 2/246:58 pmIDA - SEA
1 stop6h 52mDelta
Wed 2/265:05 pmSEA - IDA
1 stop4h 39mDelta
Deal found 1/20$227

Find flights from Idaho to Seattle within your budget

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 January 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Tue 2/18

5:15 pm-6:02 pm

Nonstop1h 47m

Seattle/Tacoma Intl

Wed 2/19

7:20 am-9:54 am

Nonstop1h 34m

$137

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Tue 2/18

7:41 pm-12:25 am

1 stop5h 44m

Seattle/Tacoma Intl

Tue 2/25

5:15 am-6:46 pm

1 stop12h 31m

$153

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Thu 2/27

7:41 pm-12:25 am

1 stop5h 44m

Seattle/Tacoma Intl

Sun 3/2

8:15 pm-10:41 pm

Nonstop1h 26m

$155

SpokaneSeattle

GEG - SEA

GEGSEA

Spokane

Tue 2/11

5:00 am-6:23 am

Nonstop1h 23m

Seattle/Tacoma Intl

Tue 2/18

7:20 am-8:35 am

Nonstop1h 15m

$157

HaileySeattle

SUN - SEA

SUNSEA

Hailey Sun Valley-Friedman

Fri 3/7

7:04 pm-7:54 pm

Nonstop1h 50m

Seattle/Tacoma Intl

Sun 3/9

3:43 pm-6:19 pm

Nonstop1h 36m

$177

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Tue 3/11

1:49 pm-7:03 pm

1 stop6h 14m

Seattle/Tacoma Intl

Tue 3/11

9:36 pm-11:59 pm

Nonstop1h 23m

$181

LewistonSeattle

LWS - SEA

LWSSEA

Lewiston Nez Perce Rgnl

Thu 4/17

7:05 am-8:26 am

Nonstop1h 21m

Seattle/Tacoma Intl

Mon 4/21

9:20 pm-10:33 pm

Nonstop1h 13m

$189

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Tue 4/8

7:00 pm-1:38 am

1 stop7h 38m

Seattle/Tacoma Intl

Fri 4/11

3:24 pm-9:43 pm

1 stop5h 19m

$196

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

Thu 4/3

8:00 am-8:58 am

Nonstop1h 58m

Seattle/Tacoma Intl

Tue 4/8

7:55 pm-10:35 pm

Nonstop1h 40m

$198

JacksonSeattle

JAC - SEA

JACSEA

Jackson Hole

Tue 3/4

4:20 pm-9:01 pm

1 stop5h 41m

Seattle/Tacoma Intl

Tue 3/11

5:15 am-1:22 pm

1 stop7h 07m

$205

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 47 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.

Travel insights for flights from Idaho to Seattle

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

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 January 21, 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 January 21, 2025.

The most flights from USID to SEA are scheduled on a Tuesday (52 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (36 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 January 21, 2025.
See what other customers who have flown with Alaska Airlines, Delta and Spirit Airlines 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
4,662 reviews

Comfort

8.1

Food

7.2

Boarding

8.2

Overall

8.1

Entertainment

7.7

Crew

8.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,662 reviews
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Food

7.2

Boarding

8.2

Overall

8.1

Entertainment

7.7

Crew

8.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Alaska Airlines
8.0
Very good
9,706 reviews
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Food

7.2

Boarding

8.2

Overall

8.1

Entertainment

7.7

Crew

8.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,521 reviews
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Food

7.2

Boarding

8.2

Overall

8.1

Entertainment

7.7

Crew

8.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
8,984 reviews
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Food

7.2

Boarding

8.2

Overall

8.1

Entertainment

7.7

Crew

8.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Food

7.2

Boarding

8.2

Overall

8.1

Entertainment

7.7

Crew

8.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

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 84 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 $69 on Alaska Airlines. Other airlines that offer cheap prices include Spirit Airlines from $75 and Delta from $78 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 Virgin Atlantic (88%), Hawaiian Airlines (88%) or Air Tahiti Nui (87%) 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 $1,069. The most popular route, (Boise Air Term. Gowen Fld - Seattle/Tacoma Intl), can usually be booked for $137.

  • 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
Renton
Tacoma
Lacey
Federal Way
Ocean Shores
Leavenworth
Olympia
Marysville
Centralia
Cle Elum
Mukilteo
Aberdeen
Lakewood
Issaquah
Shoreline
Lynnwood
Shelton
Silverdale

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Alternative routes for Idaho to Seattle

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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 January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$90Average$180FlexibilityNo cancel feeOn-time65%
DeltaCheapest$117Average$428FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$130Average$291FlexibilityNo cancel feeOn-time75%
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