HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Idaho Falls

$94+ 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 2/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — IDA
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
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.

Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Idaho Falls Fanning Field are usually found in January or February, booked 48 days in advance, depart on a Wednesday or Thursday 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 December 12, 2025.

This Alaska Airlines deal was found by Cheapflights users on 12/9. 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.
Wed 12/249:21 pmSEA - IDA
Nonstop1h 46mAlaska Airlines
Wed 12/316:00 amIDA - SEA
Nonstop2h 20mAlaska Airlines
Deal found 12/9$368
This WAYA deal was found by Cheapflights users on 12/11. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/265:20 amSEA - IDA
1 stop6h 16mMultiple Airlines
Thu 1/16:00 amIDA - SEA
Nonstop2h 20mMultiple Airlines
Deal found 12/11$417
This Alaska Airlines deal was found by Cheapflights users on 12/9. 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.
Sat 12/279:21 pmSEA - IDA
Nonstop1h 46mAlaska Airlines
Sat 1/36:00 amIDA - SEA
Nonstop2h 20mAlaska Airlines
Deal found 12/9$418
This WAYA deal was found by Cheapflights users on 12/11. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/265:20 amSEA - IDA
1 stop6h 16mMultiple Airlines
Fri 1/21:26 pmIDA - SEA
1 stop6h 03mMultiple Airlines
Deal found 12/11$452
This Alaska Airlines deal was found by Cheapflights users on 12/9. 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.
Wed 12/179:15 pmSEA - IDA
Nonstop1h 44mAlaska Airlines
Mon 12/226:00 amIDA - SEA
Nonstop2h 20mAlaska Airlines
Deal found 12/9$498
This Delta deal was found by Cheapflights users on 12/10. 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.
Wed 12/244:57 pmSEA - IDA
1 stop4h 55mDelta
Mon 12/295:55 amIDA - SEA
1 stop5h 13mDelta
Deal found 12/10$508
This Alaska Airlines deal was found by Cheapflights users on 12/11. 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.
Fri 12/269:21 pmSEA - IDA
Nonstop1h 46mAlaska Airlines
Thu 1/16:00 amIDA - SEA
Nonstop2h 20mAlaska Airlines
Deal found 12/11$518
This Alaska Airlines deal was found by Cheapflights users on 12/11. 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.
Sun 12/219:21 pmSEA - IDA
Nonstop1h 46mAlaska Airlines
Mon 12/226:00 amIDA - SEA
Nonstop2h 20mAlaska Airlines
Deal found 12/11$538
This WAYA deal was found by Cheapflights users on 12/10. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/249:21 pmSEA - IDA
Nonstop1h 46mMultiple Airlines
Mon 12/291:26 pmIDA - SEA
1 stop6h 03mMultiple Airlines
Deal found 12/10$544
This Orbitz deal was found by Cheapflights users on 12/10. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/249:21 pmSEA - IDA
Nonstop1h 46mAlaska Airlines
Mon 12/296:00 amIDA - SEA
Nonstop2h 20mAlaska Airlines
Deal found 12/10$558
This Kiwi.com deal was found by Cheapflights users on 12/10. 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.
Sun 12/216:05 pmSEA - IDA
1 stop19h 15mMultiple Airlines
Mon 12/229:20 pmIDA - SEA
1 stop13h 51mMultiple Airlines
Deal found 12/10$566
This Delta deal was found by Cheapflights users on 12/9. 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.
Wed 12/244:57 pmSEA - IDA
1 stop4h 55mDelta
Wed 12/315:55 amIDA - SEA
1 stop5h 13mDelta
Deal found 12/9$572

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 December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$177
(Alaska Airlines)

One-way from

$94
(Delta)

Popular in

March

Cheapest in

January

Average price

$338

Good round-trip deal

$297 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. 0% potential increase in price ($3 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip 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 December 12, 2025.
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

Wed 1/21

5:30 am-12:34 pm

1 stop6h 04m

Idaho Falls Fanning Field

Sun 1/25

6:35 pm-12:09 am

1 stop6h 34m

$197

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Fri 2/6

3:35 pm-6:18 pm

Nonstop1h 43m

Idaho Falls Fanning Field

Mon 2/9

6:58 pm-8:00 pm

Nonstop2h 02m

$197

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Thu 1/22

3:35 pm-6:18 pm

Nonstop1h 43m

Idaho Falls Fanning Field

Sun 1/25

6:58 pm-8:00 pm

Nonstop2h 02m

$197

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Wed 1/21

3:35 pm-6:18 pm

Nonstop1h 43m

Idaho Falls Fanning Field

Sun 1/25

9:00 am-10:10 am

Nonstop2h 10m

$218

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Wed 1/14

5:25 am-12:34 pm

1 stop6h 09m

Idaho Falls Fanning Field

Fri 1/23

1:15 pm-4:55 pm

1 stop4h 40m

$252

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Mon 2/2

8:16 pm-10:59 pm

Nonstop1h 43m

Idaho Falls Fanning Field

Fri 2/6

6:58 pm-8:00 pm

Nonstop2h 02m

$268

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Mon 2/2

11:25 am-5:51 pm

1 stop5h 26m

Idaho Falls Fanning Field

Fri 2/6

6:35 pm-12:09 am

1 stop6h 34m

$288

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Fri 2/6

5:00 am-12:34 pm

1 stop6h 34m

Idaho Falls Fanning Field

Mon 2/9

6:35 pm-12:09 am

1 stop6h 34m

$309

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Wed 1/7

11:05 pm-2:19 pm

2 stops38h 14m

Idaho Falls Fanning Field

Wed 1/14

6:58 pm-8:00 pm

Nonstop2h 02m

$349

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Fri 1/16

3:35 pm-6:18 pm

Nonstop1h 43m

Idaho Falls Fanning Field

Mon 1/19

6:58 pm-8:00 pm

Nonstop2h 02m

$398

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Showing 1-10 of 20 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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Seattle-Idaho Falls flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 December 5, 2025.

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 $218). 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 December 12, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 40% 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 December 12, 2025.
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
11,429 reviews

Entertainment

7.0

Overall

8.0

Comfort

7.8

Boarding

8.1

Crew

8.5

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Alaska Airlines
8.0
Very good
11,429 reviews
Alaska Airlines
8.0
Very good
11,429 reviews

Entertainment

7.0

Overall

8.0

Comfort

7.8

Boarding

8.1

Crew

8.5

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Delta
7.9
Good
8,008 reviews
Alaska Airlines
8.0
Very good
11,429 reviews

Entertainment

7.0

Overall

8.0

Comfort

7.8

Boarding

8.1

Crew

8.5

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Hawaiian Airlines
7.8
Good
2,818 reviews
Alaska Airlines
8.0
Very good
11,429 reviews

Entertainment

7.0

Overall

8.0

Comfort

7.8

Boarding

8.1

Crew

8.5

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.

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 39m on average. When it comes time to book airfare, you have a few options: there are 3 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 43m. The distance between Seattle and Idaho Falls is about 565 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 62% 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: Horizon Air (86%), Alaska Airlines (85%), SkyWest Airlines( 84%).

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

    The cheapest flight price from Seattle to Idaho Falls is $177. On average you can expect to pay $374. The most popular route, (Seattle/Tacoma Intl - Idaho Falls Fanning Field), can usually be booked for $207.

  • 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 $218). 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 Seattle to Idaho Falls

See prices for flight routes from nearby airports that may be better suited for you.
Seattle to Spokane flights
Seattle to Boise flights
Seattle to Jackson flights
Portland to Spokane flights
Portland to Boise flights
Spokane to Boise flights
Seattle to Hailey flights
Seattle to Lewiston flights
Portland to Pocatello flights
Portland to Hailey flights
Spokane to Idaho Falls flights
Pullman to Boise flights
Portland to Jackson flights
Seattle to Twin Falls flights
Spokane to Jackson flights
Portland to Idaho Falls flights
Spokane to Pocatello flights
Spokane to Hailey flights
Bellingham to Spokane flights
Portland to Lewiston flights
Pasco to Idaho Falls flights
Portland to Twin Falls flights
Seattle to Pocatello flights
Pasco to West Yellowstone flights
Yakima to Hailey flights
Seattle to West Yellowstone flights
Pullman to Spokane flights
Spokane to Twin Falls flights
Bellingham to Hailey flights

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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$118Average$567FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$149Average$343FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$177Average$323FlexibilityNo 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.