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Idaho

$62+ Cheap flights from Washington to Idaho

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/21. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BOI
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
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 junio 12, 2025.

Round-trip from

$62
(Booking.com)

Popular in

December

Cheapest in

January

Average price

$237

Good round-trip deal

$177 or less

Good one-way deal

$98 or less
From Washington to Idaho
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($29 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 June 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 junio 12, 2025.

This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 7/211:38 pmPDX - IDA
Nonstop1h 36mAllegiant Air
lun. 7/285:04 pmIDA - PDX
Nonstop1h 37mAllegiant Air
Deal found 6/12$103
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.
sáb. 11/82:30 pmPDX - GEG
Nonstop1h 14mAlaska Airlines
mar. 11/1112:33 pmGEG - PDX
Nonstop1h 17mAlaska Airlines
Deal found 6/10$137
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.
mié. 10/151:30 pmSEA - GEG
Nonstop1h 14mDelta
mié. 10/225:35 pmGEG - SEA
Nonstop1h 25mDelta
Deal found 6/9$137
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/1510:11 amGEG - BOI
Nonstop1h 09mAlaska Airlines
mar. 8/196:11 pmBOI - GEG
Nonstop1h 08mAlaska Airlines
Deal found 6/12$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.
mar. 8/199:40 pmPDX - BOI
Nonstop1h 14mAlaska Airlines
sáb. 8/236:00 amBOI - PDX
Nonstop1h 20mAlaska Airlines
Deal found 6/10$147
This Hawaiian 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/2011:30 amSEA - BOI
1 stop6h 07mHawaiian Airlines
mié. 10/226:59 pmBOI - SEA
1 stop4h 05mHawaiian Airlines
Deal found 6/9$156
This Hawaiian 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/156:00 amGEG - BOI
Nonstop1h 07mHawaiian Airlines
dom. 8/172:44 pmBOI - GEG
Nonstop1h 11mHawaiian Airlines
Deal found 6/10$157
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.
vie. 8/228:30 amSEA - BOI
Nonstop1h 34mDelta
vie. 10/245:00 pmBOI - SEA
Nonstop1h 46mDelta
Deal found 6/9$157
This Alaska Airlines 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/108:03 amSEA - BOI
Nonstop1h 32mAlaska Airlines
mié. 9/102:19 pmBOI - SEA
1 stop5h 39mAlaska Airlines
Deal found 6/11$161
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.
mié. 11/127:00 amPDX - BOI
1 stop4h 20mSouthwest
mié. 11/121:25 pmBOI - PDX
2 stops7h 30mSouthwest
Deal found 6/11$162
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 7/211:38 pmPDX - IDA
Nonstop1h 36mMultiple Airlines
lun. 7/286:12 pmIDA - PDX
1 stop16h 06mMultiple Airlines
Deal found 6/10$167
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/155:30 pmGEG - BOI
1 stop5h 20mDelta
mar. 8/1911:45 amBOI - GEG
1 stop6h 04mDelta
Deal found 6/12$167

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 junio 12, 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

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

lun. 7/21

1:38 pm-4:14 pm

Nonstop1h 36m

Idaho Falls Fanning Field

lun. 7/28

5:04 pm-5:41 pm

Nonstop1h 37m

$103

PortlandSpokane

PDX - GEG

PDXGEG

Portland

sáb. 11/8

2:30 pm-3:44 pm

Nonstop1h 14m

Spokane

mar. 11/11

12:33 pm-1:50 pm

Nonstop1h 17m

$137

SeattleSpokane

SEA - GEG

SEAGEG

Seattle/Tacoma Intl

mié. 9/10

10:55 pm-12:02 am

Nonstop1h 07m

Spokane

mié. 9/17

5:35 pm-7:00 pm

Nonstop1h 25m

$137

SpokaneBoise

GEG - BOI

GEGBOI

Spokane

vie. 8/15

10:11 am-12:20 pm

Nonstop1h 09m

Boise Air Term. Gowen Fld

mar. 8/19

6:11 pm-6:19 pm

Nonstop1h 08m

$147

PortlandBoise

PDX - BOI

PDXBOI

Portland

mar. 8/19

9:40 pm-11:54 pm

Nonstop1h 14m

Boise Air Term. Gowen Fld

sáb. 8/23

6:00 am-6:20 am

Nonstop1h 20m

$147

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

mié. 8/20

11:30 am-6:37 pm

1 stop6h 07m

Boise Air Term. Gowen Fld

mié. 10/22

6:59 pm-10:04 pm

1 stop4h 05m

$156

SpokaneBoise

GEG - BOI

GEGBOI

Spokane

vie. 8/15

6:00 am-8:07 am

Nonstop1h 07m

Boise Air Term. Gowen Fld

dom. 8/17

2:44 pm-2:55 pm

Nonstop1h 11m

$157

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

vie. 8/22

7:46 pm-10:23 pm

Nonstop1h 37m

Boise Air Term. Gowen Fld

lun. 10/20

7:30 pm-8:20 pm

Nonstop1h 50m

$157

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

mié. 9/10

8:03 am-10:35 am

Nonstop1h 32m

Boise Air Term. Gowen Fld

mié. 9/10

2:19 pm-6:58 pm

1 stop5h 39m

$161

PortlandBoise

PDX - BOI

PDXBOI

Portland

mié. 11/12

7:00 am-12:20 pm

1 stop4h 20m

Boise Air Term. Gowen Fld

mié. 11/12

1:25 pm-7:55 pm

2 stops7h 30m

$162

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 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 $395). 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 junio 12, 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 junio 12, 2025.

The most flights from USWA to USID 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 (41 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 junio 12, 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
10,000 reviews

Entertainment

7.1

Boarding

8.1

Comfort

7.8

Food

7.1

Overall

8.0

Crew

8.5

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
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Boarding

8.1

Comfort

7.8

Food

7.1

Overall

8.0

Crew

8.5

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
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Boarding

8.1

Comfort

7.8

Food

7.1

Overall

8.0

Crew

8.5

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
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Boarding

8.1

Comfort

7.8

Food

7.1

Overall

8.0

Crew

8.5

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
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Boarding

8.1

Comfort

7.8

Food

7.1

Overall

8.0

Crew

8.5

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
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Boarding

8.1

Comfort

7.8

Food

7.1

Overall

8.0

Crew

8.5

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 19 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 Delta ($69), Allegiant Air ($73), and Alaska Airlines ($88).

  • 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 $395). 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 junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$98Average$435FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$104Average$237FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$137Average$363FlexibilityNo cancel feeOn-time75%

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