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$56+ 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 7/25. Fares are subject to change and may not be available on all flights or dates of travel.
IDA — SEA
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
1 adult, Economy
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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 junio 12, 2025.

Round-trip from

$91
(Booking.com)

One-way from

$56
(Kiwi.com)

Popular in

January

Cheapest in

April

Average price

$298

Good round-trip deal

$268 or less

Good one-way deal

$160 or less
From Idaho Falls Fanning Field to Washington
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One-way flight from Idaho Falls Fanning Field to Washington
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Highest demand for flights based on searches. 4% potential increase in price ($14 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% 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 Idaho Falls Fanning Field to Washington.
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Price to beat on a one-way flight from Idaho Falls Fanning Field to Washington.
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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 junio 12, 2025.

This Booking.com 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 6/274:30 pmIDA - PDX
Nonstop1h 37mAllegiant Air
vie. 7/41:38 pmPDX - IDA
Nonstop1h 36mAllegiant Air
Deal found 6/10$91
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 7/186:12 pmIDA - PDX
1 stop21h 03mMultiple Airlines
lun. 7/211:38 pmPDX - IDA
Nonstop1h 36mMultiple Airlines
Deal found 6/12$174
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/264:03 pmIDA - SEA
Nonstop1h 56mMultiple Airlines
mar. 9/3012:37 pmSEA - IDA
Nonstop1h 46mMultiple Airlines
Deal found 6/11$206
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/26:13 amIDA - SEA
Nonstop1h 57mAlaska Airlines
sáb. 9/67:55 pmSEA - IDA
Nonstop1h 44mAlaska Airlines
Deal found 6/9$207
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.
mar. 9/23:00 pmIDA - SEA
1 stop5h 00mDelta
sáb. 9/69:40 amSEA - IDA
1 stop3h 39mDelta
Deal found 6/9$227
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 7/96:15 amIDA - SEA
Nonstop1h 56mHawaiian Airlines
jue. 7/107:55 pmSEA - IDA
Nonstop1h 44mHawaiian Airlines
Deal found 6/12$266
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.
jue. 8/1412:28 pmIDA - GEG
1 stop23h 13mAllegiant Air
dom. 8/173:46 pmGEG - IDA
1 stop18h 44mAllegiant Air
Deal found 6/10$297
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.
mié. 10/296:05 amIDA - PDX
1 stop5h 27mHawaiian Airlines
mié. 11/57:35 amPDX - IDA
1 stop6h 44mHawaiian Airlines
Deal found 6/10$298
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.
jue. 9/46:13 amIDA - PDX
2 stops11h 31mAlaska Airlines
mar. 9/93:40 pmPDX - IDA
1 stop5h 59mAlaska Airlines
Deal found 6/11$308
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.
lun. 9/84:03 pmIDA - GEG
1 stop3h 47mAlaska Airlines
jue. 9/114:35 pmGEG - IDA
1 stop5h 04mAlaska Airlines
Deal found 6/10$324
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.
jue. 8/146:52 pmIDA - GEG
2 stops6h 10mDelta
sáb. 8/165:45 amGEG - IDA
1 stop3h 54mDelta
Deal found 6/10$330
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.
dom. 8/176:00 amIDA - PDX
1 stop3h 51mDelta
mié. 8/205:35 amPDX - IDA
1 stop4h 04mDelta
Deal found 6/10$338

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 junio 12, 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

vie. 6/27

4:30 pm-5:07 pm

Nonstop1h 37m

Portland

vie. 7/4

1:38 pm-4:14 pm

Nonstop1h 36m

$91

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

vie. 7/18

6:12 pm-2:15 pm

1 stop21h 03m

Portland

lun. 7/21

1:38 pm-4:14 pm

Nonstop1h 36m

$174

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

mar. 9/2

6:13 am-7:10 am

Nonstop1h 57m

Seattle/Tacoma Intl

sáb. 9/6

7:55 pm-10:39 pm

Nonstop1h 44m

$207

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

mar. 9/2

3:00 pm-7:00 pm

1 stop5h 00m

Seattle/Tacoma Intl

sáb. 9/6

9:40 am-2:19 pm

1 stop3h 39m

$227

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

vie. 7/18

6:12 pm-4:25 pm

1 stop23h 13m

Seattle/Tacoma Intl

dom. 7/20

5:30 pm-11:44 am

1 stop17h 14m

$259

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

mié. 7/9

6:15 am-7:11 am

Nonstop1h 56m

Seattle/Tacoma Intl

jue. 7/10

7:55 pm-10:39 pm

Nonstop1h 44m

$266

Idaho FallsSpokane

IDA - GEG

IDAGEG

Idaho Falls Fanning Field

jue. 8/14

12:28 pm-10:41 am

1 stop23h 13m

Spokane

dom. 8/17

3:46 pm-11:30 am

1 stop18h 44m

$297

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

mié. 10/29

6:05 am-10:32 am

1 stop5h 27m

Portland

mié. 11/5

7:35 am-3:19 pm

1 stop6h 44m

$298

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

jue. 9/4

6:13 am-4:44 pm

2 stops11h 31m

Portland

mar. 9/9

3:40 pm-10:39 pm

1 stop5h 59m

$308

Idaho FallsSpokane

IDA - GEG

IDAGEG

Idaho Falls Fanning Field

lun. 9/8

4:03 pm-6:50 pm

1 stop3h 47m

Spokane

jue. 9/11

4:35 pm-10:39 pm

1 stop5h 04m

$324

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 33 results
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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 July is currently the most expensive (average of $391). 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 junio 12, 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 junio 12, 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).

Rainfall in Washington by month

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

In terms of precipitation, rainfall in State of Washington ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit State of Washington when rainfall is around 0.7 in.

Temperature in Washington by month

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

If weather is an important factor for your trip to State of Washington, 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 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

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 junio 12, 2025.
See what other customers who have flown with Alaska Airlines, Delta and Hawaiian Airlines from Idaho Falls to Washington have to say. 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

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

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

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

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

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

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

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

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

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

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

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

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 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 $56. Users have also found prices from $119 and $149 on Hawaiian Airlines and Alaska Airlines, 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 - Seattle/Tacoma Intl. You may also consider Idaho Falls Fanning Field - Portland or Idaho Falls Fanning Field - Spokane.

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

    Consider Qatar Airways (95%), Alaska Airlines (88%) or Horizon Air (88%) 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 $376, our data shows the cheapest flight currently is $119. When looking at the most popular route, (Idaho Falls Fanning Field - Seattle/Tacoma Intl), you can expect to pay $206 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 July is currently the most expensive (average of $391). 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.

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Alternative routes for Idaho Falls to Washington

See prices for flight routes from nearby airports that may be better suited for you.
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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 junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$118Average$372FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$119Average$257FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$191Average$440FlexibilityNo cancel feeOn-time75%

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