HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Washington

$78+ Cheap flights from Idaho Falls (IDA) to Washington

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 8/8. Fares are subject to change and may not be available on all flights or dates of travel.
IDA — SEA
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Idaho Falls to Washington 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 Idaho Falls to Washington

Keep the following information in mind while searching for Idaho Falls to Washington flight deals. Data was last updated July 29, 2025.

Round-trip from

$108
(Booking.com)

One-way from

$78
(Booking.com)

Popular in

January

Cheapest in

April

Average price

$368

Good round-trip deal

$275 or less

Good one-way deal

$159 or less
From Idaho Falls Fanning Field to Washington
Search Deals
One-way flight from Idaho Falls Fanning Field to Washington
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($11 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals
Price to beat on a round-trip flight from Idaho Falls Fanning Field to Washington.
Search Deals
Price to beat on a one-way flight from Idaho Falls Fanning Field to Washington.
Search Deals

Find flight deals from Idaho Falls to Washington

Cheapest flights from Idaho Falls to Washington
Explore the most affordable flight options available from Idaho Falls to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

This Booking.com deal was found by Cheapflights users on 7/28. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/123:26 pmIDA - PDX
Nonstop1h 45mAllegiant Air
Mon 12/1512:01 pmPDX - IDA
Nonstop1h 35mAllegiant Air
Deal found 7/28$108
This Alaska Airlines deal was found by Cheapflights users on 7/29. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/116:00 amIDA - SEA
Nonstop2h 11mAlaska Airlines
Wed 10/227:55 pmSEA - IDA
Nonstop1h 43mAlaska Airlines
Deal found 7/29$177
This Delta deal was found by Cheapflights users on 7/29. 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 8/206:52 pmIDA - SEA
1 stop4h 28mDelta
Sat 8/235:30 amSEA - IDA
1 stop4h 09mDelta
Deal found 7/29$196
This Mytrip deal was found by Cheapflights users on 7/26. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/115:04 pmIDA - PDX
Nonstop1h 37mMultiple Airlines
Thu 8/147:52 pmPDX - IDA
1 stop14h 38mMultiple Airlines
Deal found 7/26$222
This Hawaiian Airlines deal was found by Cheapflights users on 7/29. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/46:00 amIDA - GEG
1 stop4h 32mHawaiian Airlines
Wed 10/85:54 pmGEG - IDA
1 stop3h 44mHawaiian Airlines
Deal found 7/29$238
This Hawaiian Airlines deal was found by Cheapflights users on 7/28. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/86:13 amIDA - SEA
Nonstop1h 57mHawaiian Airlines
Sun 9/1412:34 pmSEA - IDA
Nonstop1h 46mHawaiian Airlines
Deal found 7/28$238
This Delta deal was found by Cheapflights users on 7/28. 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.
Sat 8/306:00 amIDA - PSC
1 stop3h 43mDelta
Tue 9/25:45 amPSC - IDA
1 stop3h 54mDelta
Deal found 7/28$239
This Delta deal was found by Cheapflights users on 7/29. 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.
Tue 8/266:52 pmIDA - GEG
1 stop4h 38mDelta
Tue 9/25:45 amGEG - IDA
1 stop3h 54mDelta
Deal found 7/29$268
This Hawaiian Airlines deal was found by Cheapflights users on 7/29. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/293:50 pmIDA - PDX
1 stop5h 47mHawaiian Airlines
Wed 11/57:30 amPDX - IDA
1 stop6h 43mHawaiian Airlines
Deal found 7/29$282
This Alaska Airlines deal was found by Cheapflights users on 7/26. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/163:57 pmIDA - PDX
1 stop15h 20mAlaska Airlines
Tue 9/234:46 pmPDX - IDA
1 stop4h 53mAlaska Airlines
Deal found 7/26$284
This Delta deal was found by Cheapflights users on 7/26. 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 9/176:51 pmIDA - PDX
2 stops6h 01mDelta
Sat 9/203:35 pmPDX - IDA
2 stops5h 50mDelta
Deal found 7/26$295
This Alaska Airlines deal was found by Cheapflights users on 7/29. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/46:00 amIDA - GEG
1 stop4h 32mAlaska Airlines
Wed 10/85:11 amGEG - IDA
2 stops16h 27mAlaska Airlines
Deal found 7/29$306

Cheapflights Fare Finder

 
Customize your flight search to find flights from Idaho Falls to Washington 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 July 29, 2025.
Use the filters below to find and compare flights from Idaho Falls to Washington that are best for you.

Fly from

Idaho Falls

Fly to

Washington

Route

Depart

Return

Price

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Fri 12/12

3:26 pm-4:11 pm

Nonstop1h 45m

Portland

Mon 12/15

12:01 pm-2:36 pm

Nonstop1h 35m

$108

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

Sat 10/11

6:00 am-7:11 am

Nonstop2h 11m

Seattle/Tacoma Intl

Wed 10/22

7:55 pm-10:38 pm

Nonstop1h 43m

$177

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

Wed 8/20

6:52 pm-10:20 pm

1 stop4h 28m

Seattle/Tacoma Intl

Tue 8/26

5:49 pm-10:27 pm

1 stop3h 38m

$196

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Mon 8/11

5:04 pm-5:41 pm

Nonstop1h 37m

Portland

Thu 8/14

7:52 pm-11:30 am

1 stop14h 38m

$222

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

Mon 9/8

6:13 am-7:10 am

Nonstop1h 57m

Seattle/Tacoma Intl

Sun 9/14

12:34 pm-3:20 pm

Nonstop1h 46m

$238

Idaho FallsSpokane

IDA - GEG

IDAGEG

Idaho Falls Fanning Field

Sat 10/4

6:00 am-9:32 am

1 stop4h 32m

Spokane

Wed 10/8

5:54 pm-10:38 pm

1 stop3h 44m

$238

Idaho FallsPasco

IDA - PSC

IDAPSC

Idaho Falls Fanning Field

Sat 8/30

6:00 am-8:43 am

1 stop3h 43m

Pasco Tri Cities

Tue 9/2

5:45 am-10:39 am

1 stop3h 54m

$239

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Wed 10/29

3:50 pm-8:37 pm

1 stop5h 47m

Portland

Wed 11/5

7:30 am-3:13 pm

1 stop6h 43m

$282

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Tue 9/16

3:57 pm-6:17 am

1 stop15h 20m

Portland

Sat 9/20

6:05 am-3:20 pm

1 stop8h 15m

$284

Idaho FallsSpokane

IDA - GEG

IDAGEG

Idaho Falls Fanning Field

Fri 10/3

6:13 am-11:30 am

1 stop6h 17m

Spokane

Tue 10/7

5:54 pm-10:38 pm

1 stop3h 44m

$287

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 28 results
1
2
3

Best time to book a flight from Idaho Falls to Washington

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

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

Currently, January is the cheapest month in which you can book a flight from Idaho Falls to State of Washington (average of $238). Flying from Idaho Falls to State of Washington in June is currently the most expensive (average of $389). 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 IDA to WA?

Find hourly flight availability from Idaho Falls to Washington. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 29, 2025.

When flying from Idaho Falls to State of Washington, 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 Idaho Falls to State of Washington

Explore weekly flight availability from Idaho Falls to Washington. 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 July 29, 2025.

The most flights from IDA to USWA 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).

Reviews of airlines servicing Washington

Get insights into the airlines that provide service to Washington. 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 Washington. Reviews last updated July 29, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Delta, and Hawaiian Airlines from Idaho Falls to Washington by reading reviews from past customers. 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

Overall

8.0

Boarding

8.1

Comfort

7.8

Food

7.1

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Boarding

8.1

Comfort

7.8

Food

7.1

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,977 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Boarding

8.1

Comfort

7.8

Food

7.1

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Hawaiian Airlines
7.8
Good
2,605 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Boarding

8.1

Comfort

7.8

Food

7.1

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,899 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Boarding

8.1

Comfort

7.8

Food

7.1

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Boarding

8.1

Comfort

7.8

Food

7.1

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Related info for your journey

Find useful and relevant information for your journey from Idaho Falls to Washington. 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 from for flights from Idaho Falls to Washington?

    Idaho Falls Fanning Field (IDA), located 3.8 mi from the city center, is the airport you fly out of when you book flights from Idaho Falls to Washington.

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

    This flight path from Idaho Falls Fanning Field to Washington was viewed by 52 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 Idaho Falls to State of Washington one-way?

    For one-way options, check prices for Allegiant Air. According to our data, you can fly for as low as $78. Users have also found prices from $109 and $139 on Alaska Airlines and Delta, respectively.

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

    The most popular route from Idaho Falls to State of Washington is Idaho Falls Fanning Field - Pasco Tri Cities. You may also consider Idaho Falls Fanning Field - Seattle/Tacoma Intl or Idaho Falls Fanning Field - Portland.

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

    Consider Qatar Airways (98%), Alaska Airlines (85%) or Horizon Air (85%) when booking your flight. These represent the most reliable airlines when flying from Idaho Falls to State of Washington.

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

    While on average a flight from Idaho Falls to State of Washington is generally $373, our data shows the cheapest flight currently is $120. When looking at the most popular route, (Idaho Falls Fanning Field - Pasco Tri Cities), you can expect to pay $301 for that flight.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Idaho Falls to State of Washington (average of $238). Flying from Idaho Falls to State of Washington in June is currently the most expensive (average of $389). 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

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 Idaho Falls to Washington

See prices for flight routes from nearby airports that may be better suited for you.
Boise to Seattle flights
Boise to Las Vegas flights
Boise to Denver flights
Boise to Atlanta flights
Spokane to Seattle flights
Boise to Los Angeles flights
Boise to O'Hare Intl flights
Boise to Sky Harbor Intl flights
Spokane to Los Angeles flights
Spokane to Las Vegas flights
Spokane to Denver flights
Spokane to Salt Lake City flights
Boise to San Francisco flights
Spokane to Dallas/Fort Worth flights
Boise to Santa Ana flights
Spokane to O'Hare Intl flights
Spokane to Dulles Intl flights
Spokane to Reagan-National flights
Boise to LaGuardia flights
Spokane to Baltimore flights
Spokane to Hobby flights
Boise to Honolulu flights
Spokane to San Diego flights
Boise to San Diego flights
Boise to Nashville flights
Boise to Dallas/Fort Worth flights
Boise to Minneapolis flights
Boise to John F Kennedy Intl flights
Spokane to Orlando flights
Boise to Burbank flights
Spokane to Minneapolis flights
Spokane to Sky Harbor Intl flights
Boise to Miami flights
Jackson to Seattle flights
Boise to Portland flights
Idaho Falls to Los Angeles flights
Boise to Orlando flights
Spokane to Honolulu flights
Boise to Fort Lauderdale flights
Boise to Sacramento flights
Boise to Kahului flights
Spokane to Nashville flights
Boise to Hobby flights
Boise to Newark flights
Boise to Reno flights
Spokane to Ontario flights
Boise to Salt Lake City flights
Idaho Falls to Newark flights
Spokane to George Bush Intcntl flights
Spokane to Boston flights

Top 3 airlines flying from Idaho Falls to Washington

Discover the top 3 airlines that operate flights from Idaho Falls to Washington. 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 July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$118Average$376FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$119Average$298FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$196Average$429FlexibilityNo cancel feeOn-time75%

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.