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Idaho Falls

$99+ Cheap flights from Seattle to Idaho Falls (SEA - 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 2/24. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — IDA
Feb 25 — Mar 41
Wed 2/25
Wed 3/4
1 adult, Economy
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Find cheap flights from Seattle 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”

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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Idaho Falls Fanning Field are usually found in February or May, booked 48 days in advance, depart on a Saturday or Wednesday and return on a Thursday

Cheap flight deals from Seattle to Idaho Falls

Cheapest flights from Seattle to Idaho Falls
Explore the most affordable flight options available from Seattle to Idaho Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 26, 2026.

This Alaska Airlines deal was found by Cheapflights users on 1/24. 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 2/281:59 pm
SEA
-
IDA
Nonstop1h 44m
Alaska Airlines
Mon 3/25:20 pm
IDA
-
SEA
Nonstop2h 01m
Alaska Airlines
Deal found 1/24$167
This Alaska Airlines deal was found by Cheapflights users on 1/25. 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 2/171:59 pm
SEA
-
IDA
Nonstop1h 44m
Alaska Airlines
Tue 2/245:20 pm
IDA
-
SEA
Nonstop2h 01m
Alaska Airlines
Deal found 1/25$197
This Alaska Airlines deal was found by Cheapflights users on 1/25. 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.
Mon 2/238:52 pm
SEA
-
IDA
Nonstop1h 44m
Alaska Airlines
Mon 3/25:20 pm
IDA
-
SEA
Nonstop2h 01m
Alaska Airlines
Deal found 1/25$207
This Alaska Airlines deal was found by Cheapflights users on 1/25. 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.
Mon 2/168:52 pm
SEA
-
IDA
Nonstop1h 44m
Alaska Airlines
Tue 2/245:20 pm
IDA
-
SEA
Nonstop2h 01m
Alaska Airlines
Deal found 1/25$212
This Alaska Airlines deal was found by Cheapflights users on 1/24. 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 2/148:52 pm
SEA
-
IDA
Nonstop1h 44m
Alaska Airlines
Sun 2/158:00 am
IDA
-
SEA
Nonstop2h 07m
Alaska Airlines
Deal found 1/24$222
This Alaska Airlines deal was found by Cheapflights users on 1/25. 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.
Sun 2/158:52 pm
SEA
-
IDA
Nonstop1h 44m
Alaska Airlines
Tue 2/245:20 pm
IDA
-
SEA
Nonstop2h 01m
Alaska Airlines
Deal found 1/25$227
This Alaska Airlines deal was found by Cheapflights users on 1/26. 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 5/1912:47 pm
SEA
-
IDA
Nonstop1h 44m
Alaska Airlines
Wed 5/276:00 am
IDA
-
SEA
Nonstop1h 58m
Alaska Airlines
Deal found 1/26$237
This Delta deal was found by Cheapflights users on 1/24. 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 2/104:55 pm
SEA
-
IDA
1 stop5h 02m
Delta
Mon 2/165:25 am
IDA
-
SEA
1 stop5h 20m
Delta
Deal found 1/24$252
This Alaska Airlines deal was found by Cheapflights users on 1/25. 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 2/148:52 pm
SEA
-
IDA
Nonstop1h 44m
Alaska Airlines
Tue 2/245:20 pm
IDA
-
SEA
Nonstop2h 01m
Alaska Airlines
Deal found 1/25$267
This Delta deal was found by Cheapflights users on 1/25. 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 2/195:30 am
SEA
-
IDA
1 stop5h 52m
Delta
Wed 2/256:35 pm
IDA
-
SEA
1 stop6h 34m
Delta
Deal found 1/25$273
This Delta deal was found by Cheapflights users on 1/25. 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 2/207:55 pm
SEA
-
IDA
2 stops25h 26m
Delta
Wed 2/256:35 pm
IDA
-
SEA
1 stop6h 34m
Delta
Deal found 1/25$276
This Alaska Airlines deal was found by Cheapflights users on 1/24. 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 2/103:35 pm
SEA
-
IDA
Nonstop1h 43m
Alaska Airlines
Sun 2/158:00 am
IDA
-
SEA
Nonstop2h 07m
Alaska Airlines
Deal found 1/24$277

Find flight deals from Seattle to Idaho Falls

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Idaho Falls (IDA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$167
(Alaska Airlines)

One-way from

$99
(Expedia)

Popular in

March

Cheapest in

February

Average price

$277

Good round-trip deal

$212 or less

Good one-way deal

$118 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 Seattle/Tacoma Intl to Idaho Falls Fanning Field
Search Deals
One-way flight from Seattle/Tacoma Intl to Idaho Falls Fanning Field
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. 6% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Seattle/Tacoma Intl to Idaho Falls Fanning Field.
Search Deals
Price to beat on a one-way flight from Seattle/Tacoma Intl to Idaho Falls Fanning Field.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle 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 January 26, 2026.
Use the filters below to find and compare flights from Seattle to Idaho Falls that are best for you.

Fly from

Seattle

Fly to

Idaho Falls

Route

Depart

Return

Price

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Sat 2/28

1:59 pm-4:43 pm

Nonstop1h 44m

Idaho Falls Fanning Field

Mon 3/2

5:20 pm-6:21 pm

Nonstop2h 01m

$167

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Sat 2/21

8:52 pm-11:36 pm

Nonstop1h 44m

Idaho Falls Fanning Field

Sat 2/28

5:20 pm-6:21 pm

Nonstop2h 01m

$197

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Wed 2/11

8:16 pm-10:59 pm

Nonstop1h 43m

Idaho Falls Fanning Field

Sat 2/14

8:00 am-9:07 am

Nonstop2h 07m

$267

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Wed 2/11

8:16 pm-10:59 pm

Nonstop1h 43m

Idaho Falls Fanning Field

Sun 2/15

8:00 am-9:07 am

Nonstop2h 07m

$277

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Tue 2/10

8:16 pm-10:59 pm

Nonstop1h 43m

Idaho Falls Fanning Field

Sat 2/14

8:00 am-9:07 am

Nonstop2h 07m

$297

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Tue 2/10

8:16 pm-10:59 pm

Nonstop1h 43m

Idaho Falls Fanning Field

Mon 2/16

8:00 am-9:07 am

Nonstop2h 07m

$297

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Tue 2/10

4:55 pm-10:57 pm

1 stop5h 02m

Idaho Falls Fanning Field

Sat 2/14

5:25 am-9:45 am

1 stop5h 20m

$307

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Tue 2/10

4:55 pm-10:57 pm

1 stop5h 02m

Idaho Falls Fanning Field

Sun 2/15

5:25 am-9:45 am

1 stop5h 20m

$307

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Sat 2/14

8:52 pm-11:36 pm

Nonstop1h 44m

Idaho Falls Fanning Field

Tue 2/17

5:20 pm-6:21 pm

Nonstop2h 01m

$317

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Sun 2/15

8:52 pm-11:36 pm

Nonstop1h 44m

Idaho Falls Fanning Field

Wed 2/18

5:20 pm-6:21 pm

Nonstop2h 01m

$322

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/24

Showing 1-10 of 17 results
1
2

Compare providers for flights from Seattle to Idaho Falls

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Idaho Falls in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-Idaho Falls flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Idaho Falls flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Idaho Falls flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Idaho Falls flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Idaho Falls flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seattle to Idaho Falls

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

How far ahead should I book a flight from Seattle to Idaho Falls?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Idaho Falls. Price data was last updated on January 23, 2026.

The price you pay for your flight from Seattle to Idaho Falls may vary depending on when you book. For the best chance of a lower fare, look to book 48 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Seattle to Idaho Falls?

Currently, May is the cheapest month in which you can book a flight from Seattle to Idaho Falls (average of $111). Flying from Seattle to Idaho Falls in October is currently the most expensive (average of $227). 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 SEA to IDA?

Find hourly flight availability from Seattle 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 January 26, 2026.

Unlike in the morning, when flights are generally more expensive, you can save up to 41% on flights from Seattle to Idaho Falls by exploring options for tickets in the afternoon.

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 January 26, 2026.
See what other customers who have flown with Alaska Airlines, Delta, and Hawaiian Airlines from Seattle to Idaho Falls have to say. 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
11,792 reviews

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Alaska Airlines
8.0
Very good
11,792 reviews
Alaska Airlines
8.0
Very good
11,792 reviews

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Delta
7.9
Good
8,111 reviews
Alaska Airlines
8.0
Very good
11,792 reviews

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Hawaiian Airlines
7.8
Good
2,829 reviews
Alaska Airlines
8.0
Very good
11,792 reviews

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.

Related info for your journey

Find useful and relevant information for your journey from Seattle 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 airports do I use to fly from Seattle to Idaho Falls?

    To fly from Seattle to Idaho Falls, you need to book a flight from Seattle/Tacoma Intl (SEA) to Fanning Field (IDA). Nonstop flights to Idaho Falls Fanning Field from Seattle/Tacoma Intl take 1h 43m on average. When it comes time to book airfare, you have a few options: there are 6 outbound flights from Seattle/Tacoma Intl to Fanning Field offered by 3 different airlines.

  • How popular is this Seattle to Idaho Falls flight route?

    Within the past month, 1 users have taken a look at flights from Seattle/Tacoma Intl to Idaho Falls Fanning Field.

  • How long is the flight from Seattle to Idaho Falls?

    Departing from Seattle to Idaho Falls will take you 1h 44m. The distance between Seattle and Idaho Falls is about 565 mi. Generally, flights for this route are nonstop.

  • What are the cheapest airlines flying from Seattle to Idaho Falls round-trip?

    Our cheapest airline available from Seattle to Idaho Falls is Delta. Our recent data shows that you can find tickets from as low as $118 on this airline. Additional options worth looking into are Hawaiian Airlines and Alaska Airlines, starting at $139 and $177 round-trip. Delta is 63% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the most reliable airlines from Seattle to Idaho Falls?

    Before booking your flight to Idaho Falls from Seattle, check out the most reliable airlines to get you to your destination on time: SkyWest Airlines (71%), Hawaiian Airlines (71%), Qatar Airways( 68%).

  • What are the cheapest flights from Seattle to Idaho Falls?

    The cheapest flight price from Seattle to Idaho Falls is $118. On average you can expect to pay $195. The most popular route, (Seattle/Tacoma Intl - Idaho Falls Fanning Field), can usually be booked for $237.

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

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

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

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

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

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

    Currently, May is the cheapest month in which you can book a flight from Seattle to Idaho Falls (average of $111). Flying from Seattle to Idaho Falls in October is currently the most expensive (average of $227). 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

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Alternative routes for Seattle to Idaho Falls

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Top 3 airlines flying from Seattle to Idaho Falls

Discover the top 3 airlines that operate flights from Seattle 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 January 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$118Average$462FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$139Average$298FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$177Average$324FlexibilityNo cancel feeOn-time75%

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