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Idaho

$61+ 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 6/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BOI
May 5 — May 121
Mon 5/5
Mon 5/12
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 April 30, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$137
(Alaska Airlines)

One-way from

$61
(iWofly)

Popular in

November

Cheapest in

January

Average price

$232

Good round-trip deal

$157 or less

Good one-way deal

$98 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. 11% potential increase in price ($29 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 30, 2025.

This Alaska Airlines deal was found by Cheapflights users on 4/28. 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.
Sat 5/242:48 pmSEA - BOI
Nonstop1h 29mAlaska Airlines
Tue 5/277:06 pmBOI - SEA
Nonstop1h 38mAlaska Airlines
Deal found 4/28$137
This Delta deal was found by Cheapflights users on 4/29. 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.
Fri 5/233:45 pmSEA - GEG
Nonstop1h 15mDelta
Mon 5/266:10 amGEG - SEA
Nonstop1h 23mDelta
Deal found 4/29$137
This Kiwi.com deal was found by Cheapflights users on 4/29. 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 6/71:37 pmSEA - BOI
Nonstop1h 18mHawaiian Airlines
Sun 6/87:45 amBOI - SEA
Nonstop1h 30mHawaiian Airlines
Deal found 4/29$146
This Delta deal was found by Cheapflights users on 4/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/95:58 pmSEA - BOI
Nonstop1h 37mDelta
Sat 6/148:35 amBOI - SEA
Nonstop1h 51mDelta
Deal found 4/27$147
This Delta deal was found by Cheapflights users on 4/29. 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.
Wed 6/41:21 pmPDX - GEG
1 stop5h 24mDelta
Wed 6/117:30 pmGEG - PDX
1 stop4h 59mDelta
Deal found 4/29$157
This Delta deal was found by Cheapflights users on 4/28. 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 5/273:30 pmPDX - BOI
1 stop4h 36mDelta
Wed 6/44:59 pmBOI - PDX
1 stop3h 21mDelta
Deal found 4/28$157
This iWofly deal was found by Cheapflights users on 4/28. 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 iWofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/133:03 pmSEA - GEG
Nonstop1h 03mAlaska Airlines
Fri 6/208:48 pmGEG - SEA
Nonstop1h 12mAlaska Airlines
Deal found 4/28$159
This Expedia deal was found by Cheapflights users on 4/29. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/59:25 pmSEA - BOI
Nonstop1h 20mMultiple Airlines
Mon 6/912:16 pmBOI - SEA
1 stop12h 54mMultiple Airlines
Deal found 4/29$161
This Southwest deal was found by Cheapflights users on 4/29. 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.
Tue 5/275:45 amSEA - BOI
1 stop5h 00mSouthwest
Tue 6/33:00 pmBOI - SEA
1 stop8h 30mSouthwest
Deal found 4/29$162
This Southwest deal was found by Cheapflights users on 4/29. 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.
Sat 6/146:40 amPDX - BOI
1 stop8h 20mSouthwest
Tue 6/176:15 pmBOI - PDX
1 stop4h 45mSouthwest
Deal found 4/29$162
This Kiwi.com deal was found by Cheapflights users on 4/29. 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.
Fri 6/133:03 pmSEA - GEG
Nonstop1h 03mHawaiian Airlines
Fri 6/201:23 pmGEG - SEA
Nonstop1h 14mHawaiian Airlines
Deal found 4/29$163
This Kissandfly.com deal was found by Cheapflights users on 4/29. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/134:03 pmSEA - GEG
Nonstop1h 10mMultiple Airlines
Fri 6/208:48 pmGEG - SEA
Nonstop1h 12mMultiple Airlines
Deal found 4/29$164

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 April 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

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Sat 5/24

2:48 pm-5:17 pm

Nonstop1h 29m

Boise Air Term. Gowen Fld

Tue 5/27

7:06 pm-7:44 pm

Nonstop1h 38m

$137

SeattleSpokane

SEA - GEG

SEAGEG

Seattle/Tacoma Intl

Fri 5/23

3:51 pm-4:54 pm

Nonstop1h 03m

Spokane

Mon 5/26

9:30 am-10:39 am

Nonstop1h 09m

$137

SeattleSpokane

SEA - GEG

SEAGEG

Seattle/Tacoma Intl

Sat 5/24

2:38 pm-3:36 pm

Nonstop0h 58m

Spokane

Sun 5/25

1:40 pm-2:50 pm

Nonstop1h 10m

$141

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Sat 6/7

1:37 pm-3:55 pm

Nonstop1h 18m

Boise Air Term. Gowen Fld

Sun 6/8

7:45 am-8:15 am

Nonstop1h 30m

$146

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Mon 6/9

5:58 pm-8:35 pm

Nonstop1h 37m

Boise Air Term. Gowen Fld

Sat 6/14

8:35 am-9:26 am

Nonstop1h 51m

$147

SeattleSpokane

SEA - GEG

SEAGEG

Seattle/Tacoma Intl

Sat 5/24

11:35 am-12:53 pm

Nonstop1h 18m

Spokane

Sun 5/25

5:40 pm-7:00 pm

Nonstop1h 20m

$147

PortlandSpokane

PDX - GEG

PDXGEG

Portland

Wed 6/4

1:21 pm-6:45 pm

1 stop5h 24m

Spokane

Wed 6/11

7:30 pm-12:29 am

1 stop4h 59m

$157

PortlandBoise

PDX - BOI

PDXBOI

Portland

Tue 5/27

5:35 am-10:06 am

1 stop3h 31m

Boise Air Term. Gowen Fld

Sat 5/31

4:59 pm-8:27 pm

1 stop4h 28m

$157

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Thu 6/5

9:25 pm-11:45 pm

Nonstop1h 20m

Boise Air Term. Gowen Fld

Mon 6/9

12:16 pm-12:10 am

1 stop12h 54m

$161

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Tue 5/27

5:45 am-11:45 am

1 stop5h 00m

Boise Air Term. Gowen Fld

Tue 6/3

3:00 pm-10:30 pm

1 stop8h 30m

$162

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

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, October is the cheapest month in which you can book a flight from State of Washington to Idaho (average of $314). Flying from State of Washington to Idaho in June is currently the most expensive (average of $406). 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 April 30, 2025.

When flying from State of Washington to Idaho, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from State of Washington to Idaho

Explore weekly flight availability from Washington 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 April 30, 2025.

The most flights from USWA to USID are scheduled on a Monday (58 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (31 on average).

Rainfall in Idaho by month

Plan your trip to Idaho by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Idaho ranges from 0.2 - 1.6 inches per month. December is typically the wettest month, when rainfall can reach 1.6 in. August is typically the driest time to visit Idaho when rainfall is around 0.2 in.

Temperature in Idaho by month

Plan your trip to Idaho by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Idaho, 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 75.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 30.2 F).

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 April 30, 2025.
To help decide which airline to fly from Washington to Idaho, see what other customers have to say about Alaska Airlines, Southwest and Delta. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,968 reviews

Entertainment

7.1

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
9,968 reviews
Alaska Airlines
8.0
Very good
9,968 reviews

Entertainment

7.1

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,295 reviews
Alaska Airlines
8.0
Very good
9,968 reviews

Entertainment

7.1

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,936 reviews
Alaska Airlines
8.0
Very good
9,968 reviews

Entertainment

7.1

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,406 reviews
Alaska Airlines
8.0
Very good
9,968 reviews

Entertainment

7.1

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,696 reviews
Alaska Airlines
8.0
Very good
9,968 reviews

Entertainment

7.1

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 17 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 State of Washington to Idaho one-way?

    The cheapest airlines for a one-way flight from State of Washington to Idaho are Alaska Airlines ($61), Delta ($69), and Hawaiian Airlines ($69).

  • 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, October is the cheapest month in which you can book a flight from State of Washington to Idaho (average of $314). Flying from State of Washington to Idaho in June is currently the most expensive (average of $406). 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

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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 April 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$98Average$237FlexibilityNo cancel feeOn-time85%
DeltaCheapest$98Average$448FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$139Average$380FlexibilityNo cancel feeOn-time75%

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