HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Idaho Falls

$149+ 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 10/3. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — IDA
oct. 11 — oct. 181
sáb. 10/11
sáb. 10/18
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 septiembre 11, 2025.

Round-trip from

$197
(Hawaiian Airlines)

One-way from

$149
(Hawaiian Airlines)

Popular in

March

Cheapest in

April

Average price

$328

Good round-trip deal

$373 or less

Good one-way deal

$199 or less
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, 5% potential price rise
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 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 septiembre 11, 2025.

This Hawaiian Airlines deal was found by Cheapflights users on 9/10. 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.
mar. 10/147:55 pmSEA - IDA
Nonstop1h 43mHawaiian Airlines
sáb. 10/186:00 amIDA - SEA
Nonstop2h 11mHawaiian Airlines
Deal found 9/10$197
This KAYAK deal was found by Cheapflights users on 9/9. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/49:15 pmSEA - IDA
Nonstop1h 44mAlaska Airlines
dom. 11/93:50 pmIDA - SEA
Nonstop2h 04mAlaska Airlines
Deal found 9/9$211
This Alaska Airlines deal was found by Cheapflights users on 9/8. 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. 10/37:55 pmSEA - IDA
Nonstop1h 44mAlaska Airlines
sáb. 10/44:15 pmIDA - SEA
Nonstop1h 57mAlaska Airlines
Deal found 9/8$227
This Delta deal was found by Cheapflights users on 9/10. 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.
jue. 10/25:45 pmSEA - IDA
1 stop3h 40mDelta
sáb. 10/46:51 pmIDA - SEA
1 stop4h 07mDelta
Deal found 9/10$247
This Alaska Airlines deal was found by Cheapflights users on 9/9. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/177:55 pmSEA - IDA
Nonstop1h 43mAlaska Airlines
dom. 10/196:00 amIDA - SEA
Nonstop2h 11mAlaska Airlines
Deal found 9/9$257
This Hawaiian Airlines deal was found by Cheapflights users on 9/10. 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. 10/37:55 pmSEA - IDA
Nonstop1h 44mHawaiian Airlines
mar. 10/74:15 pmIDA - SEA
Nonstop1h 57mHawaiian Airlines
Deal found 9/10$258
This Delta deal was found by Cheapflights users on 9/11. 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.
mar. 11/47:10 amSEA - IDA
1 stop4h 23mDelta
mié. 11/196:57 pmIDA - SEA
1 stop4h 21mDelta
Deal found 9/11$267
This Delta deal was found by Cheapflights users on 9/10. 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.
mar. 9/305:45 pmSEA - IDA
1 stop3h 40mDelta
sáb. 10/46:51 pmIDA - SEA
1 stop4h 07mDelta
Deal found 9/10$277
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/234:26 pmSEA - IDA
1 stop22h 48mMultiple Airlines
lun. 10/277:40 pmIDA - SEA
2 stops17h 33mMultiple Airlines
Deal found 9/9$285
This Delta deal was found by Cheapflights users on 9/9. 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.
jue. 11/275:25 amSEA - IDA
1 stop6h 14mDelta
mar. 12/27:06 pmIDA - SEA
1 stop5h 19mDelta
Deal found 9/9$287
This Alaska Airlines deal was found by Cheapflights users on 9/10. 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.
jue. 10/27:55 pmSEA - IDA
Nonstop1h 44mAlaska Airlines
mar. 10/74:15 pmIDA - SEA
Nonstop1h 57mAlaska Airlines
Deal found 9/10$288
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/257:22 pmPDX - IDA
1 stop19h 43mMultiple Airlines
lun. 9/299:39 pmIDA - PDX
1 stop14h 32mMultiple Airlines
Deal found 9/10$310

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 septiembre 11, 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

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

sáb. 12/20

9:20 pm-12:06 am

Nonstop1h 46m

Idaho Falls Fanning Field

sáb. 12/27

6:00 am-7:20 am

Nonstop2h 20m

$227

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

dom. 11/16

12:24 pm-3:13 pm

Nonstop1h 49m

Idaho Falls Fanning Field

sáb. 11/22

3:14 pm-4:22 pm

Nonstop2h 08m

$257

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

vie. 10/3

7:55 pm-10:39 pm

Nonstop1h 44m

Idaho Falls Fanning Field

mié. 10/8

6:00 am-7:11 am

Nonstop2h 11m

$257

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

vie. 10/3

7:55 pm-10:39 pm

Nonstop1h 44m

Idaho Falls Fanning Field

mar. 10/7

4:15 pm-5:12 pm

Nonstop1h 57m

$258

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

sáb. 10/4

12:55 pm-3:38 pm

Nonstop1h 43m

Idaho Falls Fanning Field

mar. 10/7

4:15 pm-5:12 pm

Nonstop1h 57m

$258

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

vie. 10/3

7:55 pm-10:39 pm

Nonstop1h 44m

Idaho Falls Fanning Field

mar. 10/7

6:00 am-7:11 am

Nonstop2h 11m

$258

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

mar. 11/4

7:10 am-12:33 pm

1 stop4h 23m

Idaho Falls Fanning Field

mié. 11/19

6:57 pm-10:18 pm

1 stop4h 21m

$267

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

sáb. 12/20

9:20 pm-12:06 am

Nonstop1h 46m

Idaho Falls Fanning Field

vie. 12/26

6:00 am-7:20 am

Nonstop2h 20m

$288

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

jue. 10/2

7:55 pm-10:39 pm

Nonstop1h 44m

Idaho Falls Fanning Field

mar. 10/7

4:15 pm-5:12 pm

Nonstop1h 57m

$288

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

mar. 3/10

12:40 pm-3:23 pm

Nonstop1h 43m

Idaho Falls Fanning Field

mié. 3/11

8:00 am-8:59 am

Nonstop1h 59m

$298

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 57 results
1
2
3
...
6

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 septiembre 11, 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 septiembre 11, 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).

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.

  • How long is the flight from State of Washington to Idaho Falls?

    Departing from State of Washington to Idaho Falls will take you 1h 46m. State of Washington and Idaho Falls are separated by a distance of 565 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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 ($149), Alaska Airlines ($149), 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 Spokane - Idaho Falls Fanning Field.

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

    Consider Qatar Airways (81%), Alaska Airlines (75%) or Horizon Air (75%) 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 $386. The most popular route, (Seattle/Tacoma Intl - Idaho Falls Fanning Field), can usually be booked for $197.

  • 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

Traveling to a place near Idaho Falls?

Book flights to Idaho Falls 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.
Los Angeles to Boise flights
Seattle to Boise flights
Newark to Jackson flights
Seattle to Spokane flights
John F Kennedy Intl to Jackson flights
Los Angeles to Spokane flights
LaGuardia to Jackson flights
Denver to Boise flights
Santa Ana to Boise flights
San Diego to Boise flights
Dallas/Fort Worth to Boise flights
Los Angeles to Jackson flights
O'Hare Intl to Jackson flights
Burbank to Boise flights
O'Hare Intl to Boise flights
Denver to Spokane flights
San Francisco to Spokane flights
Sky Harbor Intl to Spokane flights
Portland to Boise flights
Minneapolis to Spokane flights
Minneapolis to Boise flights
Dallas/Fort Worth to Spokane flights
San Francisco to Jackson flights
Boise to Spokane flights
Portland to Spokane flights
Sacramento to Boise flights
Spokane to Boise flights
Sky Harbor Intl to Boise flights
Dulles Intl to Boise flights
Ontario to Boise flights
Seattle to Idaho Falls flights
San Francisco to Boise flights
San Diego to Spokane flights
Salt Lake City to Spokane flights
Fargo to Boise flights
Atlanta to Boise flights
Dallas/Fort Worth to Jackson flights
Baltimore to Boise flights
Dulles Intl to Jackson flights
John F Kennedy Intl to Spokane flights
Boston to Boise flights
Boston to Jackson flights
Columbus to Jackson flights
John F Kennedy Intl to Boise flights
Hobby to Jackson flights
Dulles Intl to Spokane flights
Ontario to Spokane flights
Reagan-National to Boise flights
Denver to Jackson flights
Newark to Spokane flights

Top 3 airlines flying from Washington to Idaho Falls

Discover the top 3 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 septiembre 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$118Average$508FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$145Average$356FlexibilityNo cancel feeOn-time75%
Hawaiian AirlinesCheapest$149Average$343FlexibilityNo cancel feeOn-time85%

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.