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Idaho

$60+ Cheap flights from Washington 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 12/11. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BOI
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Cheap flight deals from Washington to Idaho

Keep the following information in mind while searching for Washington to Idaho flight deals. Data was last updated October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$101
(Trip.com)

One-way from

$60
(Delta)

Popular in

December

Cheapest in

January

Average price

$256

Good round-trip deal

$127 or less

Good one-way deal

$69 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 Washington to Idaho
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One-way flight from Washington to Idaho
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Highest demand for flights based on searches. 3% potential increase in price ($7 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Price to beat on a round-trip flight from Washington to Idaho.
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Price to beat on a one-way flight from Washington to Idaho.
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Find flight deals from Washington to Idaho

Cheapest flights from Washington to Idaho
Explore the most affordable flight options available from Washington to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

This Trip.com deal was found by Cheapflights users on 10/29. 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.
Wed 11/1911:15 pmSEA - GEG
Nonstop1h 07mHawaiian Airlines
Sun 11/235:30 amGEG - SEA
Nonstop1h 23mHawaiian Airlines
Deal found 10/29$101
This Trip.com deal was found by Cheapflights users on 10/29. 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.
Fri 11/217:15 amSEA - GEG
Nonstop1h 05mHawaiian Airlines
Fri 11/285:30 amGEG - SEA
Nonstop1h 23mHawaiian Airlines
Deal found 10/29$102
This Trip.com deal was found by Cheapflights users on 10/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/129:59 pmSEA - GEG
Nonstop1h 15mHawaiian Airlines
Fri 12/1910:17 amGEG - SEA
Nonstop1h 18mHawaiian Airlines
Deal found 10/27$103
This Cheapflightsfares deal was found by Cheapflights users on 10/28. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/273:45 pmSEA - GEG
Nonstop1h 08mAlaska Airlines
Thu 12/48:47 pmGEG - SEA
Nonstop1h 15mAlaska Airlines
Deal found 10/28$107
This Delta deal was found by Cheapflights users on 10/28. 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.
Tue 11/259:25 amSEA - GEG
Nonstop1h 14mDelta
Tue 12/21:10 pmGEG - SEA
Nonstop1h 27mDelta
Deal found 10/28$108
This Cheapflightsfares deal was found by Cheapflights users on 10/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/39:28 pmSEA - BOI
Nonstop1h 22mAlaska Airlines
Sat 12/65:59 pmBOI - SEA
Nonstop1h 48mAlaska Airlines
Deal found 10/30$116
This Delta deal was found by Cheapflights users on 10/28. 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.
Tue 12/168:32 amSEA - BOI
Nonstop1h 32mDelta
Tue 12/306:08 pmBOI - SEA
Nonstop1h 51mDelta
Deal found 10/28$117
This Delta deal was found by Cheapflights users on 10/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/235:30 pmSEA - GEG
Nonstop1h 13mDelta
Sat 12/275:00 amGEG - SEA
Nonstop1h 23mDelta
Deal found 10/30$117
This Alaska Airlines deal was found by Cheapflights users on 10/29. 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.
Wed 11/266:08 pmPUW - BOI
Nonstop1h 02mAlaska Airlines
Wed 12/34:56 pmBOI - PUW
Nonstop1h 04mAlaska Airlines
Deal found 10/29$117
This Delta deal was found by Cheapflights users on 10/28. 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.
Tue 12/29:25 amSEA - GEG
Nonstop1h 14mDelta
Wed 12/33:35 pmGEG - SEA
Nonstop1h 25mDelta
Deal found 10/28$119
This Kiwi.com deal was found by Cheapflights users on 10/29. 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.
Sat 11/221:35 pmSEA - BOI
Nonstop1h 23mHawaiian Airlines
Sun 11/236:09 amBOI - SEA
Nonstop1h 52mHawaiian Airlines
Deal found 10/29$123
This Cheapflightsfares deal was found by Cheapflights users on 10/27. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/266:05 amGEG - BOI
Nonstop1h 13mAlaska Airlines
Tue 12/307:07 amBOI - GEG
Nonstop1h 13mAlaska Airlines
Deal found 10/27$126

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington 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 October 30, 2025.
Use the filters below to find and compare flights from Washington to Idaho that are best for you.

Fly from

Washington

Fly to

Idaho

Route

Depart

Return

Price

SeattleSpokane

SEA - GEG

SEAGEG

Seattle/Tacoma Intl

Mon 12/1

10:59 pm-12:10 am

Nonstop1h 11m

Spokane

Tue 12/9

6:05 am-7:45 am

Nonstop1h 40m

$108

SeattleSpokane

SEA - GEG

SEAGEG

Seattle/Tacoma Intl

Thu 11/20

7:10 am-8:36 am

Nonstop1h 26m

Spokane

Sun 11/23

7:05 am-8:40 am

Nonstop1h 35m

$108

SeattleSpokane

SEA - GEG

SEAGEG

Seattle/Tacoma Intl

Tue 11/25

7:10 am-8:36 am

Nonstop1h 26m

Spokane

Tue 12/2

6:05 am-7:45 am

Nonstop1h 40m

$108

SeattleSpokane

SEA - GEG

SEAGEG

Seattle/Tacoma Intl

Tue 11/18

9:35 pm-10:50 pm

Nonstop1h 15m

Spokane

Tue 11/25

5:00 am-6:29 am

Nonstop1h 29m

$108

PullmanBoise

PUW - BOI

PUWBOI

Pullman Moscow Regional

Wed 11/26

6:08 pm-8:10 pm

Nonstop1h 02m

Boise Air Term. Gowen Fld

Wed 12/3

4:56 pm-5:00 pm

Nonstop1h 04m

$117

PullmanBoise

PUW - BOI

PUWBOI

Pullman Moscow Regional

Wed 12/24

6:22 pm-8:26 pm

Nonstop1h 04m

Boise Air Term. Gowen Fld

Tue 12/30

5:42 pm-5:45 pm

Nonstop1h 03m

$117

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Sat 12/13

7:45 pm-10:16 pm

Nonstop1h 31m

Boise Air Term. Gowen Fld

Sat 1/3

5:40 am-6:37 am

Nonstop1h 57m

$117

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Sat 11/22

9:35 pm-12:07 am

Nonstop1h 32m

Boise Air Term. Gowen Fld

Sat 11/29

5:20 am-6:18 am

Nonstop1h 58m

$117

SpokaneBoise

GEG - BOI

GEGBOI

Spokane

Sat 12/6

6:00 am-8:15 am

Nonstop1h 15m

Boise Air Term. Gowen Fld

Sun 12/7

7:25 am-7:43 am

Nonstop1h 18m

$127

PullmanBoise

PUW - BOI

PUWBOI

Pullman Moscow Regional

Tue 12/30

6:22 pm-8:26 pm

Nonstop1h 04m

Boise Air Term. Gowen Fld

Thu 1/1

5:42 pm-5:45 pm

Nonstop1h 03m

$127

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 60 results
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Best time to book a flight from Washington to Idaho

Have a flexible travel schedule? Discover the best time to fly to Idaho from Washington 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 Washington to Idaho

What is the cheapest month to book a flight from State of Washington to Idaho?

Currently, January is the cheapest month in which you can book a flight from State of Washington to Idaho (average of $77). Flying from State of Washington 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 WA to ID?

Find hourly flight availability from Washington 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 October 30, 2025.

It’s optimal to fly from State of Washington to Idaho in the evening. By choosing this option you can save up to 32% on the cost of your flight, compared to a flight in the morning.

What is the cheapest day to fly from State of Washington to Idaho?

Use this chart to determine the cheapest time to fly round-trip from Washington to Idaho. Price data was last updated on November 10, 2024.

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

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 October 30, 2025.
Read through reviews of airlines operating flights from Washington to Idaho, such as Alaska Airlines, Delta, and Hawaiian Airlines. 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
11,214 reviews

Comfort

7.8

Food

7.1

Entertainment

7.0

Boarding

8.1

Overall

8.0

Crew

8.5

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
11,214 reviews
Alaska Airlines
8.0
Very good
11,214 reviews

Comfort

7.8

Food

7.1

Entertainment

7.0

Boarding

8.1

Overall

8.0

Crew

8.5

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
7,993 reviews
Alaska Airlines
8.0
Very good
11,214 reviews

Comfort

7.8

Food

7.1

Entertainment

7.0

Boarding

8.1

Overall

8.0

Crew

8.5

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
2,797 reviews
Alaska Airlines
8.0
Very good
11,214 reviews

Comfort

7.8

Food

7.1

Entertainment

7.0

Boarding

8.1

Overall

8.0

Crew

8.5

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 Washington to Idaho. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How popular is this State of Washington to Idaho flight route?

    The Washington to Idaho flight path 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 State of Washington to Idaho?

    There are many flights that can get you from State of Washington to Idaho in 1h 02m. Fly via Delta, Alaska Airlines, or Southwest to get the fastest option. The distance from State of Washington to Idaho is about 224 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from State of Washington to Idaho one-way?

    The cheapest airlines for a one-way flight from State of Washington to Idaho are Alaska Airlines ($68), Delta ($74), and Southwest ($76).

  • Can I find deals for flights from Washington to Idaho that include hotel bookings?

    Yes. In addition to deals on Washington to Idaho flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington to Idaho?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington to Idaho.

  • Can I find deals for business class flights from Washington to Idaho?

    Yes. Cheapflights offers flight deals from Washington 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 State of Washington to Idaho?

    Currently, January is the cheapest month in which you can book a flight from State of Washington to Idaho (average of $77). Flying from State of Washington 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 Washington 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 Washington to Idaho

Discover the top 3 airlines that operate flights from Washington 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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$98Average$470FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$117Average$266FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$125Average$358FlexibilityNo cancel feeOn-time75%

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