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Idaho Falls

$62+ Cheap flights from Washington to Idaho Falls (IDA)

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 — IDA
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from Washington to Idaho Falls

Keep the following information in mind while searching for Washington to Idaho Falls flight deals. Data was last updated June 12, 2025.

Round-trip from

$62
(Booking.com)

Popular in

March

Cheapest in

April

Average price

$363

Good round-trip deal

$257 or less

Good one-way deal

$194 or less
From Washington to Idaho Falls Fanning Field
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Highest demand for flights based on searches. 0% potential increase in price ($0 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($13 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 Falls Fanning Field.
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Price to beat on a one-way flight from Washington to Idaho Falls Fanning Field.
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Find flight deals from Washington to Idaho Falls

Cheapest flights from Washington to Idaho Falls
Explore the most affordable flight options available from Washington to Idaho Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 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.
Mon 7/211:38 pmPDX - IDA
Nonstop1h 36mAllegiant Air
Mon 7/285:04 pmIDA - PDX
Nonstop1h 37mAllegiant Air
Deal found 6/12$103
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.
Mon 7/211:38 pmPDX - IDA
Nonstop1h 36mMultiple Airlines
Mon 7/286:12 pmIDA - PDX
1 stop16h 06mMultiple Airlines
Deal found 6/10$167
This Hawaiian 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1212:37 pmSEA - IDA
Nonstop1h 46mHawaiian Airlines
Tue 9/164:03 pmIDA - SEA
Nonstop1h 56mHawaiian Airlines
Deal found 6/11$207
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.
Thu 8/75:30 pmSEA - IDA
1 stop17h 14mMultiple Airlines
Mon 8/116:12 pmIDA - SEA
1 stop23h 13mMultiple Airlines
Deal found 6/10$220
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/145:30 amSEA - IDA
1 stop4h 09mDelta
Mon 8/186:52 pmIDA - SEA
1 stop6h 14mDelta
Deal found 6/11$237
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.
Tue 7/297:55 pmSEA - IDA
Nonstop1h 44mAlaska Airlines
Tue 8/124:03 pmIDA - SEA
Nonstop1h 57mAlaska Airlines
Deal found 6/12$238
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.
Fri 10/174:28 pmPDX - IDA
1 stop5h 10mAlaska Airlines
Mon 10/204:15 pmIDA - PDX
2 stops18h 34mAlaska Airlines
Deal found 6/10$321
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.
Fri 10/174:28 pmPDX - IDA
1 stop5h 10mHawaiian Airlines
Mon 10/206:13 amIDA - PDX
1 stop5h 40mHawaiian Airlines
Deal found 6/10$324
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.
Fri 11/149:00 amGEG - IDA
1 stop5h 19mAlaska Airlines
Sun 11/163:56 pmIDA - GEG
1 stop6h 23mAlaska Airlines
Deal found 6/11$324
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/165:45 amGEG - IDA
1 stop3h 54mDelta
Mon 8/1811:20 amIDA - GEG
1 stop5h 53mDelta
Deal found 6/11$325
This Kissandfly.com 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/104:46 pmGEG - IDA
1 stop4h 53mHawaiian Airlines
Wed 7/166:00 amIDA - GEG
1 stop3h 53mHawaiian Airlines
Deal found 6/11$353
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/131:36 pmPDX - IDA
2 stops7h 51mDelta
Wed 8/206:00 amIDA - PDX
2 stops7h 55mDelta
Deal found 6/10$364

Cheapflights Fare Finder

Customize your flight search to find flights from Washington to Idaho Falls 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 June 12, 2025.
Use the filters below to find and compare flights from Washington to Idaho Falls that are best for you.

Fly from

Washington

Fly to

Idaho Falls

Route

Depart

Return

Price

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Mon 7/21

1:38 pm-4:14 pm

Nonstop1h 36m

Idaho Falls Fanning Field

Mon 7/28

5:04 pm-5:41 pm

Nonstop1h 37m

$103

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Mon 7/21

1:38 pm-4:14 pm

Nonstop1h 36m

Idaho Falls Fanning Field

Mon 7/28

6:12 pm-9:18 am

1 stop16h 06m

$167

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Fri 9/12

12:37 pm-3:23 pm

Nonstop1h 46m

Idaho Falls Fanning Field

Tue 9/16

4:03 pm-4:59 pm

Nonstop1h 56m

$207

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Thu 8/7

5:30 pm-11:44 am

1 stop17h 14m

Idaho Falls Fanning Field

Mon 8/11

6:12 pm-4:25 pm

1 stop23h 13m

$220

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Thu 8/14

5:30 am-10:39 am

1 stop4h 09m

Idaho Falls Fanning Field

Mon 8/18

6:52 pm-12:06 am

1 stop6h 14m

$237

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Tue 7/29

7:55 pm-10:39 pm

Nonstop1h 44m

Idaho Falls Fanning Field

Tue 8/12

4:03 pm-5:00 pm

Nonstop1h 57m

$238

SpokaneIdaho Falls

GEG - IDA

GEGIDA

Spokane

Fri 11/14

9:00 am-3:19 pm

1 stop5h 19m

Idaho Falls Fanning Field

Sat 11/15

3:56 pm-9:19 pm

1 stop6h 23m

$324

SpokaneIdaho Falls

GEG - IDA

GEGIDA

Spokane

Sat 8/16

5:45 am-10:39 am

1 stop3h 54m

Idaho Falls Fanning Field

Mon 8/18

11:20 am-4:13 pm

1 stop5h 53m

$325

SpokaneIdaho Falls

GEG - IDA

GEGIDA

Spokane

Thu 7/10

4:46 pm-10:39 pm

1 stop4h 53m

Idaho Falls Fanning Field

Wed 7/16

6:00 am-8:53 am

1 stop3h 53m

$353

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Wed 8/13

1:25 pm-10:39 pm

1 stop8h 14m

Idaho Falls Fanning Field

Wed 8/20

6:13 am-8:58 am

1 stop3h 45m

$361

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/9

Showing 1-10 of 37 results
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Best time to book a flight from Washington to Idaho Falls

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

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

Currently, October is the cheapest month in which you can book a flight from State of Washington to Idaho Falls (average of $380). Flying from State of Washington to Idaho Falls in December is currently the most expensive (average of $578). 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 IDA?

Find hourly flight availability from Washington to Idaho Falls. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

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

Rainfall in Idaho Falls by month

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

In terms of precipitation, rainfall in Idaho Falls ranges from 0.6 - 2.0 inches per month. May is typically the wettest month, when rainfall can reach 2.0 in. July is typically the driest time to visit Idaho Falls when rainfall is around 0.6 in.

Temperature in Idaho Falls by month

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

If weather is an important factor for your trip to Idaho Falls, 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 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Idaho Falls

Get insights into the airlines that provide service to Idaho Falls. 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 Falls. Reviews last updated June 12, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Delta and Hawaiian Airlines from Washington to Idaho Falls to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Boarding

8.1

Comfort

7.8

Food

7.1

Entertainment

7.1

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

Crew

8.5

Overall

8.0

Boarding

8.1

Comfort

7.8

Food

7.1

Entertainment

7.1

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
7,946 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Boarding

8.1

Comfort

7.8

Food

7.1

Entertainment

7.1

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

Crew

8.5

Overall

8.0

Boarding

8.1

Comfort

7.8

Food

7.1

Entertainment

7.1

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

Crew

8.5

Overall

8.0

Boarding

8.1

Comfort

7.8

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Allegiant Air
7.3
Good
725 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Boarding

8.1

Comfort

7.8

Food

7.1

Entertainment

7.1

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 Falls. 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 into for flights to Idaho Falls from Washington?

    Most people fly into Idaho Falls Fanning Field (IDA) if they book a flight to Idaho Falls from Washington. Fanning Field is conveniently located just 3.8 mi from Idaho Falls’s city center.

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

    The Washington to Idaho Falls Fanning Field flight path was viewed by 1 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 Falls one-way?

    The cheapest airlines for a one-way flight from State of Washington to Idaho Falls are Allegiant Air ($73), Hawaiian Airlines ($99), and Delta ($109).

  • What are the most popular routes from State of Washington to Idaho Falls?

    The most popular flight routes from State of Washington to Idaho Falls are Seattle/Tacoma Intl - Idaho Falls Fanning Field, Portland - Idaho Falls Fanning Field and Spokane - Idaho Falls Fanning Field.

  • What are the most reliable airlines from State of Washington to Idaho Falls?

    Consider Hawaiian Airlines (81%), Alaska Airlines (80%) or Horizon Air (80%) when booking your flight. These represent the most reliable airlines when flying from State of Washington to Idaho Falls.

  • What are the cheapest flights from State of Washington to Idaho Falls?

    The cheapest flight price from State of Washington to Idaho Falls is $119. On average you can expect to pay $261. The most popular route, (Seattle/Tacoma Intl - Idaho Falls Fanning Field), can usually be booked for $207.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Washington to Idaho Falls 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 Falls?

    Currently, October is the cheapest month in which you can book a flight from State of Washington to Idaho Falls (average of $380). Flying from State of Washington to Idaho Falls in December is currently the most expensive (average of $578). 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 Falls

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Washington to Idaho Falls

Discover the top 2 airlines that operate flights from Washington to Idaho Falls. 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$187Average$356FlexibilityNo cancel feeOn-time75%
DeltaCheapest$298Average$450FlexibilityNo cancel feeOn-timeN/A

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