HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Idaho Falls

$129+ Cheap flights from Seattle to Idaho Falls (SEA - IDA)

SEA — IDA
Oct 11 — Oct 181
Sun 10/11
Sun 10/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

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”

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 Seattle to Idaho Falls

Cheapest flights from Seattle to Idaho Falls

Thu 10/110:53 am -
2 stops28h 07m
Mon 10/57:42 pm -
1 stop15h 00m
Deal found 9/6$279
Sat 10/178:10 pm -
Nonstop1h 49m
Tue 10/201:58 pm -
Nonstop2h 06m
Deal found 9/9$297
Sat 10/3112:30 pm -
Nonstop1h 50m
Mon 11/21:53 pm -
Nonstop2h 04m
Deal found 9/9$327
Tue 9/298:15 pm -
2 stops35h 57m
Mon 10/57:42 pm -
1 stop15h 00m
Deal found 9/7$350

Find flight deals from Seattle to Idaho Falls

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$279
(Kiwi.com)

One-way from

$129
(Kiwi.com)

Popular in

March

Cheapest in

January

Average price

$461

Good round-trip deal

$397 or less

Good one-way deal

$378 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. 12% potential increase in price ($50 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease ($29 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 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

 
Use the filters below to find and compare flights from Seattle to Idaho Falls that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleIdaho Falls

SEA Seattle/Tacoma Intl - IDA Idaho Falls Fanning Field

SEAIDA

Seattle/Tacoma Intl

Wed 10/7

5:30 am-12:22 pm

1 stop5h 52m

Idaho Falls Fanning Field

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$164

SeattleIdaho Falls

SEA Seattle/Tacoma Intl - IDA Idaho Falls Fanning Field

SEAIDA

Seattle/Tacoma Intl

Wed 9/23

7:25 pm-11:58 am

2 stops39h 33m

Idaho Falls Fanning Field

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$194

SeattleIdaho Falls

SEA Seattle/Tacoma Intl - IDA Idaho Falls Fanning Field

SEAIDA

Seattle/Tacoma Intl

Thu 10/1

9:45 pm-4:00 pm

1 stop17h 15m

Idaho Falls Fanning Field

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$207
Quickest round-trip

SeattleIdaho Falls

SEA Seattle/Tacoma Intl - IDA Idaho Falls Fanning Field

SEAIDA

Seattle/Tacoma Intl

Thu 10/22

8:10 pm-10:59 pm

Nonstop1h 49m

Idaho Falls Fanning Field

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$209

SeattleIdaho Falls

SEA Seattle/Tacoma Intl - IDA Idaho Falls Fanning Field

SEAIDA

Seattle/Tacoma Intl

Sun 10/4

12:30 pm-3:20 pm

Nonstop1h 50m

Idaho Falls Fanning Field

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$209

SeattleIdaho Falls

SEA Seattle/Tacoma Intl - IDA Idaho Falls Fanning Field

SEAIDA

Seattle/Tacoma Intl

Thu 10/1

8:05 pm-10:56 pm

Nonstop1h 51m

Idaho Falls Fanning Field

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$234

SeattleIdaho Falls

SEA Seattle/Tacoma Intl - IDA Idaho Falls Fanning Field

SEAIDA

Seattle/Tacoma Intl

Sat 10/3

5:45 am-12:15 pm

1 stop5h 30m

Idaho Falls Fanning Field

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$239

SeattleIdaho Falls

SEA Seattle/Tacoma Intl - IDA Idaho Falls Fanning Field

SEAIDA

Seattle/Tacoma Intl

Sun 10/11

10:03 am-2:39 pm

2 stops27h 36m

Idaho Falls Fanning Field

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$239

SeattleIdaho Falls

SEA Seattle/Tacoma Intl - IDA Idaho Falls Fanning Field

SEAIDA

Seattle/Tacoma Intl

Sat 10/10

8:00 pm-2:39 pm

2 stops41h 39m

Idaho Falls Fanning Field

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$240

SeattleIdaho Falls

SEA Seattle/Tacoma Intl - IDA Idaho Falls Fanning Field

SEAIDA

Seattle/Tacoma Intl

Wed 9/30

4:27 pm-9:12 am

2 stops15h 45m

Idaho Falls Fanning Field

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$251

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/6

Showing 1-10 of 16 resultsSorted by cheapest first
1
2

Compare providers for flights from Seattle to Idaho Falls

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 September.
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

Cheapflights Insights

Everything you need to know about your flight from Seattle to Idaho Falls

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

Currently, January is the cheapest month in which you can book a flight from Seattle to Idaho Falls (average of $206). Flying from Seattle to Idaho Falls in March is currently the most expensive (average of $677). 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?

Unlike in the evening, when flights are generally more expensive, you can save up to 20% on flights from Seattle to Idaho Falls by exploring options for tickets in the afternoon.

How much does it cost to fly round-trip from Seattle to Idaho Falls?

Airfare is below average for this route at the moment.

Seattle to Idaho Falls flights typically cost between $373 and $676 in October.
The cheapest round-trip price found within the last 5 days was $279 on Multiple Airlines (Oct 1-Oct 5).

Reviews of airlines servicing Idaho Falls

See what other customers who have flown with Alaska 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
7.9
Good
12,907 reviews

Crew

8.5

Entertainment

7.0

Overall

7.9

Food

7.0

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2026

SEA - RNO

There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.
Alaska Airlines
7.9
Good
12,907 reviews
Alaska Airlines
7.9
Good
12,907 reviews

Crew

8.5

Entertainment

7.0

Overall

7.9

Food

7.0

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2026

SEA - RNO

There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.

Related info for your journey

  • 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 50m on average. When it comes time to book airfare, you have a few options: there are 2 outbound flights from Seattle/Tacoma Intl to Fanning Field offered by 1 airline.

  • 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 49m. The distance between Seattle and Idaho Falls is about 565 mi. Generally, flights for this route are nonstop.

  • What is the cheapest airline to fly from Seattle to Idaho Falls round-trip?

    Our cheapest airline available from Seattle to Idaho Falls is Alaska Airlines. Our recent data shows that you can find tickets from as low as $177 on this airline. Alaska Airlines is 50% 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: Qatar Airways (89%), SkyWest Airlines (81%), Alaska Airlines( 81%).

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

    The cheapest flight price from Seattle to Idaho Falls is $307. On average you can expect to pay $463. The most popular route, (Seattle/Tacoma Intl - Idaho Falls Fanning Field), can usually be booked for $352.

  • 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, January is the cheapest month in which you can book a flight from Seattle to Idaho Falls (average of $206). Flying from Seattle to Idaho Falls in March is currently the most expensive (average of $677). 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

Top airline flying from Seattle to Idaho Falls

AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$177Average$329FlexibilityNo 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.