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$61+ 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 8/30. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SEA
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
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 junio 12, 2025.

Round-trip from

$147
(Alaska Airlines)

One-way from

$61
(SmartFares)

Popular in

November

Cheapest in

September

Average price

$217

Good round-trip deal

$268 or less

Good one-way deal

$153 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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Highest demand for flights based on searches. 6% potential increase in price ($12 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($3 potential savings vs. average RT price).
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Average for round-trip flights in June 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 junio 12, 2025.

This Alaska Airlines deal was found by Cheapflights users on 6/10. 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.
mar. 9/94:00 pmBOI - SEA
1 stop3h 45mAlaska Airlines
mié. 9/179:31 pmSEA - BOI
Nonstop1h 28mAlaska Airlines
Deal found 6/10$147
This Delta deal was found by Cheapflights users on 6/11. 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.
mar. 8/127:25 pmGEG - SEA
Nonstop1h 24mDelta
jue. 8/1411:23 amSEA - GEG
Nonstop1h 18mDelta
Deal found 6/11$147
This Alaska Airlines deal was found by Cheapflights users on 6/10. 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.
dom. 9/285:46 pmGEG - SEA
Nonstop1h 12mAlaska Airlines
dom. 9/2810:55 pmSEA - GEG
Nonstop1h 04mAlaska Airlines
Deal found 6/10$151
This Hawaiian Airlines deal was found by Cheapflights users on 6/12. 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.
mar. 9/96:59 pmBOI - SEA
1 stop3h 01mHawaiian Airlines
mié. 9/175:42 pmSEA - BOI
1 stop3h 15mHawaiian Airlines
Deal found 6/12$156
This Delta deal was found by Cheapflights users on 6/9. 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.
dom. 8/174:20 pmBOI - SEA
Nonstop1h 40mDelta
dom. 8/248:30 amSEA - BOI
Nonstop1h 34mDelta
Deal found 6/9$157
This Southwest deal was found by Cheapflights users on 6/11. 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.
dom. 8/319:30 amBOI - SEA
1 stop5h 25mSouthwest
mié. 9/36:45 amSEA - BOI
2 stops9h 35mSouthwest
Deal found 6/11$172
This Bravofly deal was found by Cheapflights users on 6/11. 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 7/2610:11 amGEG - SEA
1 stop6h 26mHawaiian Airlines
sáb. 8/27:59 pmSEA - GEG
Nonstop1h 10mHawaiian Airlines
Deal found 6/11$175
This Trip.com deal was found by Cheapflights users on 6/11. 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.
vie. 9/264:03 pmIDA - SEA
Nonstop1h 56mMultiple Airlines
mar. 9/3012:37 pmSEA - IDA
Nonstop1h 46mMultiple Airlines
Deal found 6/11$206
This Alaska Airlines deal was found by Cheapflights users on 6/9. 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.
mar. 9/26:13 amIDA - SEA
Nonstop1h 57mAlaska Airlines
sáb. 9/67:55 pmSEA - IDA
Nonstop1h 44mAlaska Airlines
Deal found 6/9$207
This Delta deal was found by Cheapflights users on 6/10. 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.
sáb. 10/47:05 amLWS - SEA
Nonstop1h 23mDelta
lun. 10/67:45 pmSEA - LWS
Nonstop1h 18mDelta
Deal found 6/10$209
This Delta deal was found by Cheapflights users on 6/9. 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.
mar. 9/23:00 pmIDA - SEA
1 stop5h 00mDelta
sáb. 9/69:40 amSEA - IDA
1 stop3h 39mDelta
Deal found 6/9$227
This FlightHub deal was found by Cheapflights users on 6/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/39:49 pmBOI - SEA
1 stop19h 04mSpirit Airlines
dom. 10/54:58 pmSEA - BOI
1 stop26h 46mSpirit Airlines
Deal found 6/12$232

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 junio 12, 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

mar. 9/9

4:00 pm-6:45 pm

1 stop3h 45m

Seattle/Tacoma Intl

mié. 9/17

9:31 pm-11:59 pm

Nonstop1h 28m

$147

SpokaneSeattle

GEG - SEA

GEGSEA

Spokane

mar. 8/12

7:25 pm-8:49 pm

Nonstop1h 24m

Seattle/Tacoma Intl

jue. 8/14

11:23 am-12:41 pm

Nonstop1h 18m

$147

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

mar. 9/9

6:59 pm-9:00 pm

1 stop3h 01m

Seattle/Tacoma Intl

mié. 9/17

5:42 pm-9:57 pm

1 stop3h 15m

$156

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

dom. 8/17

4:20 pm-5:00 pm

Nonstop1h 40m

Seattle/Tacoma Intl

dom. 8/24

8:30 am-11:04 am

Nonstop1h 34m

$157

SpokaneSeattle

GEG - SEA

GEGSEA

Spokane

jue. 8/28

3:08 pm-4:20 pm

Nonstop1h 12m

Seattle/Tacoma Intl

dom. 8/31

3:42 pm-4:51 pm

Nonstop1h 09m

$157

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

dom. 8/31

9:30 am-1:55 pm

1 stop5h 25m

Seattle/Tacoma Intl

mié. 9/3

6:45 am-5:20 pm

2 stops9h 35m

$172

SpokaneSeattle

GEG - SEA

GEGSEA

Spokane

sáb. 7/26

10:11 am-4:37 pm

1 stop6h 26m

Seattle/Tacoma Intl

sáb. 8/2

7:59 pm-9:09 pm

Nonstop1h 10m

$175

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

mar. 9/2

6:13 am-7:10 am

Nonstop1h 57m

Seattle/Tacoma Intl

sáb. 9/6

7:55 pm-10:39 pm

Nonstop1h 44m

$207

LewistonSeattle

LWS - SEA

LWSSEA

Lewiston Nez Perce Rgnl

mar. 7/22

7:00 am-8:24 am

Nonstop1h 24m

Seattle/Tacoma Intl

mar. 7/29

7:50 pm-9:08 pm

Nonstop1h 18m

$209

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

mar. 9/2

3:00 pm-7:00 pm

1 stop5h 00m

Seattle/Tacoma Intl

sáb. 9/6

9:40 am-2:19 pm

1 stop3h 39m

$227

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

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 $238). Flying from Idaho to Seattle in July is currently the most expensive (average of $391). 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 junio 12, 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 junio 12, 2025.

The most flights from USID to SEA are scheduled on a Thursday (65 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (43 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 junio 12, 2025.
See what other customers who have flown with Alaska Airlines, Southwest 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,946 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Hawaiian Airlines
7.9
Good
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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 $61 on Alaska Airlines. Other airlines that offer cheap prices include Delta from $69 and Hawaiian Airlines from $79 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 (98%), Singapore Airlines (97%) or Aeromexico (95%) 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 $98. On average you can expect to pay $1,465. 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 $391). 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
Ocean Shores
Lacey
Leavenworth
Federal Way
Lynnwood
Olympia
Shoreline
Kent
Cle Elum
Centralia
Kirkland
Aberdeen
Renton
Shelton
Silverdale
Issaquah

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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 junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$117Average$326FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$119Average$227FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$128Average$267FlexibilityNo cancel feeOn-time75%

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