HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Idaho Falls

$89+ 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 2/21. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — IDA
Jan 28 — Feb 41
Tue 1/28
Tue 2/4
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.

The best prices from Seattle/Tacoma Intl to Idaho Falls Fanning Field are usually found in February or March, booked 82 days in advance, depart on a Friday or Wednesday and return on a Thursday

Cheap 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 23, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$177
(Alaska Airlines)

One-way from

$89
(Alaska Airlines)

Popular in

June

Cheapest in

February

Average price

$355

Good round-trip deal

$223 or less

Good one-way deal

$119 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. 9% potential increase in price ($34 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2025
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

Find 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 23, 2025.

This Alaska Airlines deal was found by Cheapflights users on 1/23. 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 4/87:55 pmSEA - IDA
Nonstop1h 40mAlaska Airlines
Wed 4/94:11 pmIDA - SEA
Nonstop1h 49mAlaska Airlines
Deal found 1/23$177
This Delta deal was found by Cheapflights users on 1/21. 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 2/225:30 amSEA - IDA
1 stop6h 00mDelta
Wed 2/266:58 pmIDA - SEA
1 stop6h 52mDelta
Deal found 1/21$217
This Mytrip deal was found by Cheapflights users on 1/22. 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.
Fri 2/215:15 amSEA - IDA
1 stop8h 22mMultiple Airlines
Fri 2/289:32 pmIDA - SEA
3 stops20h 11mMultiple Airlines
Deal found 1/22$309
This United deal was found by Cheapflights users on 1/21. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/223:16 pmSEA - IDA
1 stop17h 24mUnited Airlines
Wed 2/265:44 pmIDA - SEA
2 stops18h 28mUnited Airlines
Deal found 1/21$480

Find flights from Seattle to Idaho Falls within your budget

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 23, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Tue 4/8

7:55 pm-10:35 pm

Nonstop1h 40m

Idaho Falls Fanning Field

Tue 4/15

4:11 pm-5:00 pm

Nonstop1h 49m

$177

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Sat 2/22

5:30 am-12:30 pm

1 stop6h 00m

Idaho Falls Fanning Field

Wed 2/26

6:58 pm-12:50 am

1 stop6h 52m

$217

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Fri 2/21

5:15 am-2:37 pm

1 stop8h 22m

Idaho Falls Fanning Field

Fri 2/28

9:32 pm-4:43 pm

3 stops20h 11m

$309

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Sat 2/22

3:16 pm-9:40 am

1 stop17h 24m

Idaho Falls Fanning Field

Wed 2/26

5:44 pm-11:12 am

2 stops18h 28m

$480

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Fri 2/21

12:54 pm-3:30 pm

Nonstop1h 36m

$89

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Mon 2/24

5:05 pm-10:44 pm

1 stop4h 39m

$99

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Sun 2/23

5:38 pm-2:37 pm

2 stops19h 59m

$160

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Mon 3/10

9:18 am-1:27 pm

2 stops27h 09m

$263

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/22

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
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*1 star
CheapfaremartPrice Accuracy-Trust Score*1 star

*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.

Travel insights for flights from Seattle to Idaho Falls

Get recent, data-driven insights about flights from Seattle to Idaho Falls including ideal travel times, pricing trends, and more.

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 17, 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 80 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, October is the cheapest month in which you can book a flight from Seattle to Idaho Falls (average of $380). Flying from Seattle to Idaho Falls in July is currently the most expensive (average of $628). 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 23, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 23% on flights from Seattle to Idaho Falls by exploring options for tickets at noon.

Weekly flight availability from Seattle to Idaho Falls

Explore weekly flight availability from Seattle to Idaho Falls. 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 January 23, 2025.

The most flights from SEA to IDA are scheduled on a Monday (5 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (2 on average).

Rainfall in Idaho Falls by month

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

In terms of precipitation, rainfall in Idaho Falls ranges from 0.6 - 2.0 inches per month. May is typically the wettest month, when rainfall can reach 2.0 in. July is typically the driest time to visit Idaho Falls when rainfall is around 0.6 in.

Temperature in Idaho Falls by month

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

If weather is an important factor for your trip to Idaho Falls, 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 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 23, 2025.
See what other customers who have flown with Alaska Airlines, Delta and United 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
9,704 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Food

7.1

Overall

8.0

Entertainment

7.1

Reviews

1 / 10

Seats were not that comfy especially for someone with big hips 😥

Alaska Airlines
8.0
Very good
9,704 reviews
Alaska Airlines
8.0
Very good
9,704 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Food

7.1

Overall

8.0

Entertainment

7.1

Reviews

1 / 10

Seats were not that comfy especially for someone with big hips 😥

Delta
8.0
Very good
8,512 reviews
Alaska Airlines
8.0
Very good
9,704 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Food

7.1

Overall

8.0

Entertainment

7.1

Reviews

1 / 10

Seats were not that comfy especially for someone with big hips 😥

United Airlines
7.4
Good
8,975 reviews
Alaska Airlines
8.0
Very good
9,704 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Food

7.1

Overall

8.0

Entertainment

7.1

Reviews

1 / 10

Seats were not that comfy especially for someone with big hips 😥

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 4h 39m on average. When it comes time to book airfare, you have a few options: there are 4 outbound flights from Seattle/Tacoma Intl to Fanning Field offered by 2 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.

  • What are the cheapest airlines flying 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. Additional options worth looking into are Delta and United Airlines, starting at $217 and $480 round-trip. Alaska Airlines is 43% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Seattle to Idaho Falls one-way?

    One-way options have recently been found by users for as low as $89 on Alaska Airlines. Other airlines that offer cheap prices include Delta from $99 and United Airlines from $263 one-way.

  • 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: Alaska Airlines (82%), Horizon Air (82%), Qatar Airways( 82%).

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

    The cheapest flight price from Seattle to Idaho Falls is $98. On average you can expect to pay $233. The most popular route, (Seattle/Tacoma Intl - Idaho Falls Fanning Field), can usually be booked for $177.

  • 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, October is the cheapest month in which you can book a flight from Seattle to Idaho Falls (average of $380). Flying from Seattle to Idaho Falls in July is currently the most expensive (average of $628). 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 Seattle?

Book flights to Seattle 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
Portland to Jackson flights
Seattle to Lewiston flights
Portland to Idaho Falls flights
Bellingham to Spokane flights
Spokane to Jackson flights
Spokane to Idaho Falls flights
Seattle to West Yellowstone flights
Pullman to Boise flights
Portland to Hailey flights
Portland to Lewiston flights
Pasco to Idaho Falls flights
Portland to Twin Falls flights
Seattle to Twin Falls flights
Spokane to Hailey flights
Spokane to Pocatello flights
Portland to Pocatello flights
Spokane to Twin Falls flights
Yakima to Hailey flights
Seattle to Pocatello flights
Bellingham to Hailey flights
Pullman to Spokane flights
Pasco to West Yellowstone flights

Top 2 airlines flying from Seattle to Idaho Falls

Discover the top 2 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 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$187Average$304FlexibilityNo cancel feeOn-time75%
DeltaCheapest$211Average$422FlexibilityNo cancel feeOn-timeN/A
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.