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Idaho

$60+ 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 8/19. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BOI
ago. 4 — ago. 111
lun. 8/4
lun. 8/11
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 julio 30, 2025.

Round-trip from

$136
(Alaska Airlines)

One-way from

$60
(Trip.com)

Popular in

December

Cheapest in

January

Average price

$217

Good round-trip deal

$157 or less

Good one-way deal

$118 or less
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. 12% potential increase in price ($31 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in July 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 julio 30, 2025.

This Alaska Airlines deal was found by Cheapflights users on 7/28. 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.
mié. 9/35:42 pmSEA - BOI
1 stop3h 15mAlaska Airlines
mar. 9/94:00 pmBOI - SEA
1 stop3h 45mAlaska Airlines
Deal found 7/28$136
This Delta deal was found by Cheapflights users on 7/29. 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.
mié. 9/171:30 pmSEA - GEG
Nonstop1h 19mDelta
mié. 9/247:15 amGEG - SEA
Nonstop1h 14mDelta
Deal found 7/29$137
This Delta deal was found by Cheapflights users on 7/29. 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. 8/235:45 pmSEA - BOI
Nonstop1h 35mDelta
dom. 8/245:45 amBOI - SEA
Nonstop1h 42mDelta
Deal found 7/29$138
This Trip.com deal was found by Cheapflights users on 7/29. 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.
jue. 8/213:51 pmSEA - BOI
Nonstop1h 25mHawaiian Airlines
sáb. 8/236:59 pmBOI - SEA
1 stop3h 58mHawaiian Airlines
Deal found 7/29$139
This Kiwi.com deal was found by Cheapflights users on 7/29. 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.
sáb. 9/207:50 amSEA - GEG
Nonstop1h 10mHawaiian Airlines
lun. 9/225:12 amGEG - SEA
1 stop4h 26mHawaiian Airlines
Deal found 7/29$144
This Alaska Airlines deal was found by Cheapflights users on 7/29. 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. 8/2411:30 amSEA - GEG
Nonstop1h 13mAlaska Airlines
sáb. 8/303:26 pmGEG - SEA
Nonstop1h 18mAlaska Airlines
Deal found 7/29$147
This Southwest deal was found by Cheapflights users on 7/29. 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.
mar. 8/266:15 amSEA - BOI
1 stop5h 25mSouthwest
mar. 9/211:30 amBOI - SEA
1 stop7h 40mSouthwest
Deal found 7/29$151
This Alaska Airlines deal was found by Cheapflights users on 7/29. 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.
sáb. 8/2312:31 pmSEA - IDA
Nonstop1h 46mAlaska Airlines
mar. 8/266:13 amIDA - SEA
Nonstop1h 57mAlaska Airlines
Deal found 7/29$187
This United Airlines deal was found by Cheapflights users on 7/29. 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.
mar. 8/197:00 amSEA - BOI
1 stop5h 49mUnited Airlines
sáb. 8/239:52 amBOI - SEA
1 stop7h 27mUnited Airlines
Deal found 7/29$194
This FlightHub deal was found by Cheapflights users on 7/30. 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.
sáb. 8/3012:40 pmSEA - BOI
1 stop21h 58mFrontier
dom. 9/712:22 pmBOI - SEA
1 stop13h 08mFrontier
Deal found 7/30$195
This Delta deal was found by Cheapflights users on 7/29. 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. 8/235:30 amSEA - IDA
1 stop4h 09mDelta
mar. 8/2611:20 amIDA - SEA
1 stop4h 23mDelta
Deal found 7/29$197
This Delta deal was found by Cheapflights users on 7/28. 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.
jue. 9/115:30 amSEA - JAC
1 stop4h 15mDelta
vie. 9/196:57 pmJAC - SEA
1 stop4h 25mDelta
Deal found 7/28$211

Cheapflights Fare Finder

 
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 julio 30, 2025.
Use the filters below to find and compare flights from Seattle to Idaho that are best for you.

Fly from

Seattle

Fly to

Idaho

Route

Depart

Return

Price

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

mié. 9/3

11:30 am-6:37 pm

1 stop6h 07m

Boise Air Term. Gowen Fld

sáb. 9/6

6:59 pm-9:02 pm

1 stop3h 03m

$136

SeattleSpokane

SEA - GEG

SEAGEG

Seattle/Tacoma Intl

mié. 9/17

1:30 pm-2:49 pm

Nonstop1h 19m

Spokane

mié. 9/24

7:15 am-8:29 am

Nonstop1h 14m

$137

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

sáb. 8/23

5:45 pm-8:20 pm

Nonstop1h 35m

Boise Air Term. Gowen Fld

dom. 8/24

5:45 am-6:27 am

Nonstop1h 42m

$138

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

jue. 8/21

3:51 pm-6:16 pm

Nonstop1h 25m

Boise Air Term. Gowen Fld

sáb. 8/23

6:59 pm-9:57 pm

1 stop3h 58m

$139

SeattleSpokane

SEA - GEG

SEAGEG

Seattle/Tacoma Intl

sáb. 9/20

7:50 am-9:00 am

Nonstop1h 10m

Spokane

lun. 9/22

5:12 am-9:38 am

1 stop4h 26m

$144

SeattleSpokane

SEA - GEG

SEAGEG

Seattle/Tacoma Intl

dom. 8/24

11:30 am-12:43 pm

Nonstop1h 13m

Spokane

sáb. 8/30

3:26 pm-4:44 pm

Nonstop1h 18m

$147

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

mar. 8/26

6:15 am-12:40 pm

1 stop5h 25m

Boise Air Term. Gowen Fld

mar. 9/2

11:30 am-6:10 pm

1 stop7h 40m

$151

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

sáb. 8/23

12:31 pm-3:17 pm

Nonstop1h 46m

Idaho Falls Fanning Field

mar. 8/26

6:13 am-7:10 am

Nonstop1h 57m

$187

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

mar. 8/19

7:00 am-1:49 pm

1 stop5h 49m

Boise Air Term. Gowen Fld

sáb. 8/23

9:52 am-4:19 pm

1 stop7h 27m

$194

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

sáb. 8/30

12:40 pm-11:38 am

1 stop21h 58m

Boise Air Term. Gowen Fld

dom. 9/7

12:22 pm-12:30 am

1 stop13h 08m

$195

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 58 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.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Idaho

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 $398). 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 julio 30, 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 julio 30, 2025.

The most flights from SEA to USID are scheduled on a Wednesday (67 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (54 on average).

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 julio 30, 2025.
See what other customers who have flown with Alaska Airlines, Southwest, and Delta from Seattle to Idaho have to say. 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.1

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.1

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Southwest
8.0
Very good
4,241 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.1

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,980 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.1

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Hawaiian Airlines
7.8
Good
2,611 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.1

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,896 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.1

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

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 14 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 Hawaiian Airlines ($60), Alaska Airlines ($63), and Southwest ($76).

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

    When deciding which route to take from Seattle to Idaho consider Seattle/Tacoma Intl - Boise Air Term. Gowen Fld, Seattle/Tacoma Intl - Jackson Hole or Seattle/Tacoma Intl - Idaho Falls Fanning Field as they are the most popular.

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

    Consider KLM (88%), Virgin Atlantic (88%) or Scandinavian Airlines (88%) 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 $221, our data indicates the cheapest price to be $88. The most popular route (Seattle/Tacoma Intl - Boise Air Term. Gowen Fld), is priced around $117.

  • 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 $398). 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

See prices for flight routes from nearby airports that may be better suited for you.
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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 julio 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$98Average$414FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$104Average$247FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$137Average$316FlexibilityNo cancel feeOn-time75%

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