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Idaho

$58+ 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 12/5. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BOI
Dec 12 — Dec 191
Fri 12/12
Fri 12/19
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 November 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$89
(Delta)

One-way from

$58
(Trip.com)

Popular in

December

Cheapest in

January

Average price

$212

Good round-trip deal

$127 or less

Good one-way deal

$88 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-Boise Air Term. Gowen Fld flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Boise Air Term. Gowen Fld flights.
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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. 5% potential increase in price ($10 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 November 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 November 12, 2025.

This Delta deal was found by Cheapflights users on 11/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/119:25 amSEA - GEG
Nonstop1h 14mDelta
Thu 12/185:05 amGEG - SEA
Nonstop1h 23mDelta
Deal found 11/12$89
This Delta deal was found by Cheapflights users on 11/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/57:45 pmSEA - BOI
Nonstop1h 31mDelta
Mon 12/89:00 amBOI - SEA
Nonstop1h 57mDelta
Deal found 11/12$99
This Delta deal was found by Cheapflights users on 11/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/199:35 pmSEA - GEG
Nonstop1h 14mDelta
Mon 12/227:23 pmGEG - SEA
Nonstop1h 27mDelta
Deal found 11/12$99
This Kiwi.com deal was found by Cheapflights users on 11/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/911:15 pmSEA - GEG
Nonstop1h 09mHawaiian Airlines
Tue 12/169:17 amGEG - SEA
1 stop4h 48mHawaiian Airlines
Deal found 11/11$103
This Alaska Airlines deal was found by Cheapflights users on 11/11. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/199:15 pmSEA - BOI
Nonstop1h 22mAlaska Airlines
Thu 12/2511:58 amBOI - SEA
Nonstop1h 39mAlaska Airlines
Deal found 11/11$118
This Alaska Airlines deal was found by Cheapflights users on 11/10. 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.
Wed 12/37:45 amSEA - GEG
Nonstop1h 07mAlaska Airlines
Tue 12/94:27 pmGEG - SEA
1 stop4h 43mAlaska Airlines
Deal found 11/10$118
This Delta deal was found by Cheapflights users on 11/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2510:08 amSEA - SUN
Nonstop1h 52mDelta
Mon 12/291:40 pmSUN - SEA
Nonstop2h 05mDelta
Deal found 11/12$119
This Delta deal was found by Cheapflights users on 11/11. 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.
Tue 12/29:25 amSEA - GEG
Nonstop1h 14mDelta
Wed 12/39:25 amGEG - SEA
Nonstop1h 35mDelta
Deal found 11/11$119
This Trip.com deal was found by Cheapflights users on 11/12. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/48:25 amSEA - GEG
1 stop3h 15mAlaska Airlines
Sun 12/75:51 amGEG - SEA
Nonstop1h 24mAlaska Airlines
Deal found 11/12$120
This Delta deal was found by Cheapflights users on 11/10. 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.
Thu 12/2510:08 amSEA - SUN
Nonstop1h 52mDelta
Sun 12/281:40 pmSUN - SEA
Nonstop2h 05mDelta
Deal found 11/10$121
This Kiwi.com deal was found by Cheapflights users on 11/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2511:20 pmSEA - GEG
Nonstop1h 12mHawaiian Airlines
Thu 1/15:30 amGEG - SEA
Nonstop1h 27mHawaiian Airlines
Deal found 11/10$127
This Alaska Airlines deal was found by Cheapflights users on 11/12. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/187:59 pmSEA - BOI
Nonstop1h 27mAlaska Airlines
Thu 12/257:07 amBOI - SEA
1 stop5h 28mAlaska Airlines
Deal found 11/12$128

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 November 12, 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

SeattleSpokane

SEA - GEG

SEAGEG

Seattle/Tacoma Intl

Sun 12/14

7:10 am-8:33 am

Nonstop1h 23m

Spokane

Sun 1/4

3:32 pm-5:00 pm

Nonstop1h 28m

$89

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Thu 12/18

10:35 am-1:14 pm

Nonstop1h 39m

Boise Air Term. Gowen Fld

Thu 12/25

3:30 pm-4:20 pm

Nonstop1h 50m

$99

SeattleSpokane

SEA - GEG

SEAGEG

Seattle/Tacoma Intl

Sat 3/7

11:25 am-12:37 pm

Nonstop1h 12m

Spokane

Sun 3/8

9:10 am-10:39 am

Nonstop1h 29m

$99

SeattleSpokane

SEA - GEG

SEAGEG

Seattle/Tacoma Intl

Fri 12/19

7:10 am-8:33 am

Nonstop1h 23m

Spokane

Mon 12/22

7:23 pm-8:50 pm

Nonstop1h 27m

$99

SeattleSpokane

SEA - GEG

SEAGEG

Seattle/Tacoma Intl

Thu 12/18

7:10 am-8:33 am

Nonstop1h 23m

Spokane

Sun 12/21

11:21 am-12:50 pm

Nonstop1h 29m

$99

SeattleSpokane

SEA - GEG

SEAGEG

Seattle/Tacoma Intl

Fri 1/23

9:25 am-10:39 am

Nonstop1h 14m

Spokane

Sat 1/24

1:20 pm-2:38 pm

Nonstop1h 18m

$99

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Thu 12/4

9:28 pm-11:50 pm

Nonstop1h 22m

Boise Air Term. Gowen Fld

Sat 12/6

7:25 am-10:27 am

1 stop4h 02m

$118

SeattleSpokane

SEA - GEG

SEAGEG

Seattle/Tacoma Intl

Wed 12/10

11:15 pm-12:24 am

Nonstop1h 09m

Spokane

Wed 12/17

3:24 pm-8:26 pm

1 stop5h 02m

$118

SeattleSpokane

SEA - GEG

SEAGEG

Seattle/Tacoma Intl

Thu 12/11

11:15 pm-12:24 am

Nonstop1h 09m

Spokane

Tue 12/16

9:17 am-2:05 pm

1 stop4h 48m

$118

SeattleHailey

SEA - SUN

SEASUN

Seattle/Tacoma Intl

Thu 12/25

10:08 am-1:00 pm

Nonstop1h 52m

Hailey Sun Valley-Friedman

Mon 12/29

1:40 pm-2:45 pm

Nonstop2h 05m

$119

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/10

Showing 1-10 of 60 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, January is the cheapest month in which you can book a flight from Seattle to Idaho (average of $77). Flying from Seattle to Idaho in July is currently the most expensive (average of $175). 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 November 12, 2025.

When flying from Seattle to Idaho, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 23% versus a flight in the morning.

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

Use this chart to determine the cheapest time to fly round-trip from Seattle to Idaho. Price data was last updated on November 2, 2025.

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

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 November 12, 2025.

The most flights from SEA to USID are scheduled on a Monday (61 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (37 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 November 12, 2025.
See what other customers who have flown with Alaska Airlines, Delta, and Hawaiian Airlines 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
11,275 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Crew

8.5

Overall

8.0

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Alaska Airlines
8.0
Very good
11,275 reviews
Alaska Airlines
8.0
Very good
11,275 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Crew

8.5

Overall

8.0

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Delta
7.9
Good
8,008 reviews
Alaska Airlines
8.0
Very good
11,275 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Crew

8.5

Overall

8.0

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Hawaiian Airlines
7.8
Good
2,807 reviews
Alaska Airlines
8.0
Very good
11,275 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Crew

8.5

Overall

8.0

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.

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.

  • How long is the flight from Seattle to Idaho?

    A quick flight from Seattle to Idaho can take about 1h 22m. Delta provides one of the quickest options available for as low as $118. The distance from Seattle to Idaho is about 398 mi. This flight may include one or multiple stops.

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

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

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

    Consider KLM (95%), Virgin Atlantic (93%) or Aeromexico (93%) 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 $200, our data indicates the cheapest price to be $69. The most popular route (Seattle/Tacoma Intl - Spokane), is priced around $79.

  • 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, January is the cheapest month in which you can book a flight from Seattle to Idaho (average of $77). Flying from Seattle to Idaho in July is currently the most expensive (average of $175). 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

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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 November 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$98Average$379FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$117Average$280FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$124Average$303FlexibilityNo cancel feeOn-time75%

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