HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Idaho Falls

$89+ Cheap flights from Washington to Idaho Falls (IDA)

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 5/6. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — IDA
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Washington to Idaho Falls with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 March 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$91
(FlightHub)

One-way from

$89
(Hawaiian Airlines)

Popular in

March

Cheapest in

April

Average price

$448

Good round-trip deal

$238 or less

Good one-way deal

$119 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-Idaho Falls Fanning Field flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Idaho Falls Fanning Field flights.
Search Deals
From Washington to Idaho Falls Fanning Field
Search Deals
One-way flight from Washington to Idaho Falls Fanning Field
Search Deals
High demand for flights, 1% potential price rise
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2025
Search Deals
Price to beat on a round-trip flight from Washington to Idaho Falls Fanning Field.
Search Deals
Price to beat on a one-way flight from Washington to Idaho Falls Fanning Field.
Search Deals

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 March 28, 2025.

This Kiwi.com deal was found by Cheapflights users on 3/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/169:48 amPDX - IDA
Nonstop1h 39mAllegiant Air
Mon 5/191:17 pmIDA - PDX
Nonstop1h 39mAllegiant Air
Deal found 3/27$106
This Alaska Airlines deal was found by Cheapflights users on 3/27. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/187:55 pmSEA - IDA
Nonstop1h 40mAlaska Airlines
Tue 4/224:35 pmIDA - SEA
Nonstop1h 52mAlaska Airlines
Deal found 3/27$207
This Hawaiian Airlines deal was found by Cheapflights users on 3/27. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/37:55 pmSEA - IDA
Nonstop1h 41mHawaiian Airlines
Sun 5/44:35 pmIDA - SEA
Nonstop1h 52mHawaiian Airlines
Deal found 3/27$228
This Delta deal was found by Cheapflights users on 3/26. 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 7/25:10 pmSEA - IDA
1 stop3h 50mDelta
Sat 7/56:55 pmIDA - SEA
1 stop5h 14mDelta
Deal found 3/26$287
This Delta deal was found by Cheapflights users on 3/27. 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.
Fri 4/255:26 pmPDX - IDA
1 stop4h 30mDelta
Mon 4/286:55 pmIDA - PDX
1 stop5h 49mDelta
Deal found 3/27$291
This Hawaiian Airlines deal was found by Cheapflights users on 3/27. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/248:21 amPSC - IDA
1 stop6h 37mHawaiian Airlines
Tue 4/294:35 pmIDA - PSC
1 stop5h 16mHawaiian Airlines
Deal found 3/27$310
This Hawaiian Airlines deal was found by Cheapflights users on 3/27. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/169:30 amPDX - IDA
1 stop5h 10mHawaiian Airlines
Mon 5/196:00 amIDA - PDX
1 stop4h 53mHawaiian Airlines
Deal found 3/27$312
This Alaska Airlines deal was found by Cheapflights users on 3/27. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/204:00 pmPDX - IDA
1 stop5h 34mAlaska Airlines
Tue 6/34:20 pmIDA - PDX
1 stop15h 58mAlaska Airlines
Deal found 3/27$330
This Alaska Airlines deal was found by Cheapflights users on 3/27. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/247:20 amPSC - IDA
2 stops31h 38mAlaska Airlines
Tue 4/296:00 amIDA - PSC
1 stop5h 51mAlaska Airlines
Deal found 3/27$379
This Alaska Airlines deal was found by Cheapflights users on 3/27. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/118:00 amGEG - IDA
1 stop6h 34mAlaska Airlines
Tue 4/154:11 pmIDA - GEG
1 stop6h 45mAlaska Airlines
Deal found 3/27$455
This United deal was found by Cheapflights users on 3/27. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/38:50 amSEA - IDA
1 stop12h 55mUnited Airlines
Sun 5/47:00 amIDA - SEA
2 stops18h 59mUnited Airlines
Deal found 3/27$480
This American Airlines deal was found by Cheapflights users on 3/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/211:40 amSEA - IDA
1 stop9h 30mAmerican Airlines
Sun 5/47:43 amIDA - SEA
1 stop7h 20mAmerican Airlines
Deal found 3/26$517

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 March 28, 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

Fri 5/30

1:21 pm-4:00 pm

Nonstop1h 39m

Idaho Falls Fanning Field

Mon 6/2

4:50 pm-5:29 pm

Nonstop1h 39m

$91

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Fri 4/18

7:55 pm-10:35 pm

Nonstop1h 40m

Idaho Falls Fanning Field

Tue 4/22

4:35 pm-5:27 pm

Nonstop1h 52m

$207

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Sat 5/3

7:55 pm-10:36 pm

Nonstop1h 41m

Idaho Falls Fanning Field

Sun 5/4

4:35 pm-5:27 pm

Nonstop1h 52m

$228

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Wed 7/2

5:10 pm-10:00 pm

1 stop3h 50m

Idaho Falls Fanning Field

Sat 7/5

6:55 pm-11:09 pm

1 stop5h 14m

$287

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Fri 4/25

5:26 pm-10:56 pm

1 stop4h 30m

Idaho Falls Fanning Field

Mon 4/28

6:55 pm-11:44 pm

1 stop5h 49m

$291

PascoIdaho Falls

PSC - IDA

PSCIDA

Pasco Tri Cities

Thu 4/24

8:21 am-3:58 pm

1 stop6h 37m

Idaho Falls Fanning Field

Tue 4/29

4:35 pm-8:51 pm

1 stop5h 16m

$310

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Fri 5/16

9:30 am-3:40 pm

1 stop5h 10m

Idaho Falls Fanning Field

Mon 5/19

6:00 am-9:53 am

1 stop4h 53m

$312

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Tue 5/20

4:00 pm-10:34 pm

1 stop5h 34m

Idaho Falls Fanning Field

Tue 6/3

4:20 pm-7:18 am

1 stop15h 58m

$330

PascoIdaho Falls

PSC - IDA

PSCIDA

Pasco Tri Cities

Thu 4/24

7:20 am-3:58 pm

2 stops31h 38m

Idaho Falls Fanning Field

Tue 4/29

6:00 am-10:51 am

1 stop5h 51m

$379

SpokaneIdaho Falls

GEG - IDA

GEGIDA

Spokane

Fri 4/11

8:00 am-3:34 pm

1 stop6h 34m

Idaho Falls Fanning Field

Tue 4/15

4:11 pm-9:56 pm

1 stop6h 45m

$455

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 23 results
1
2
3

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 July is currently the most expensive (average of $628). 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 March 28, 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.

Weekly flight availability from State of Washington to Idaho Falls

Explore weekly flight availability from Washington to Idaho Falls. 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 March 28, 2025.

The most flights from USWA to IDA are scheduled on a Monday (5 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (5 on average).

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 March 28, 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
9,798 reviews

Boarding

8.2

Comfort

7.9

Food

7.1

Entertainment

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,798 reviews
Alaska Airlines
8.0
Very good
9,798 reviews

Boarding

8.2

Comfort

7.9

Food

7.1

Entertainment

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,897 reviews
Alaska Airlines
8.0
Very good
9,798 reviews

Boarding

8.2

Comfort

7.9

Food

7.1

Entertainment

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Hawaiian Airlines
7.9
Good
2,336 reviews
Alaska Airlines
8.0
Very good
9,798 reviews

Boarding

8.2

Comfort

7.9

Food

7.1

Entertainment

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,603 reviews
Alaska Airlines
8.0
Very good
9,798 reviews

Boarding

8.2

Comfort

7.9

Food

7.1

Entertainment

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Allegiant Air
7.3
Good
731 reviews
Alaska Airlines
8.0
Very good
9,798 reviews

Boarding

8.2

Comfort

7.9

Food

7.1

Entertainment

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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 Hawaiian Airlines ($89), Alaska Airlines ($109), and Delta ($159).

  • 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 Pasco Tri Cities - Idaho Falls Fanning Field.

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

    Consider Qatar Airways (83%), Hawaiian Airlines (82%) or Alaska Airlines (82%) 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 $108. On average you can expect to pay $301. 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 July is currently the most expensive (average of $628). 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

Traveling to a place near Washington?

Book flights to Washington if you plan to visit one of these locations
Rexburg

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Washington to Idaho Falls

See prices for flight routes from nearby airports that may be better suited for you.
Newark to Jackson flights
John F Kennedy Intl to Jackson flights
Los Angeles to Boise flights
O'Hare Intl to Jackson flights
Seattle to Spokane flights
Denver to Boise flights
LaGuardia to Jackson flights
Los Angeles to Spokane flights
Los Angeles to Jackson flights
Minneapolis to Spokane flights
Denver to Spokane flights
O'Hare Intl to Boise flights
San Diego to Spokane flights
Minneapolis to Boise flights
Dallas/Fort Worth to Boise flights
San Francisco to Spokane flights
Dallas/Fort Worth to Spokane flights
O'Hare Intl to Spokane flights
Seattle to Boise flights
Ontario to Spokane flights
Sky Harbor Intl to Spokane flights
Dallas/Fort Worth to Jackson flights
Dulles Intl to Jackson flights
John F Kennedy Intl to Spokane flights
San Francisco to Jackson flights
Burbank to Boise flights
Portland to Boise flights
San Diego to Boise flights
Newark to Spokane flights
Boston to Jackson flights
Santa Ana to Boise flights
Atlanta to Jackson flights
Ontario to Boise flights
Reagan-National to Jackson flights
John F Kennedy Intl to Boise flights
San Francisco to Boise flights
Fort Lauderdale to Jackson flights
Sky Harbor Intl to Boise flights
Baltimore to Jackson flights
LaGuardia to Spokane flights
Seattle to Jackson flights
Portland to Spokane flights
Newark to Boise flights
Sacramento to Boise flights
Denver to Jackson flights
Charlotte to Jackson flights
Philadelphia to Spokane flights
Seattle to Idaho Falls flights
Philadelphia to Jackson flights
Atlanta to Spokane flights

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 March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$178Average$374FlexibilityNo cancel feeOn-time75%
DeltaCheapest$320Average$548FlexibilityNo cancel feeOn-timeN/A
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.