£132 Cheap Flights from Seattle (SEA) to Idaho Falls (IDA)

View £132 flight on Fri, 12 Jun 2026Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Idaho Falls Regional Airport (IDA)

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Cheap Flights from Seattle (SEA) to Idaho Falls (IDA)

Prices were available within the past 7 days and start at £132 for one-way flights and £220 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Wed, 17 Jun - Wed, 24 Jun
SEA
Seattle
IDA
Idaho Falls
£220 Return, found 4 hours ago
£220
Return
found 4 hours ago
Select Alaska Airlines flight, departing Wed, 17 Jun from Seattle to Idaho Falls, returning Wed, 24 Jun, priced at £220 found 4 hours ago
Alaska Airlines
Sun, 14 Jun - Sun, 21 Jun
SEA
Seattle
IDA
Idaho Falls
£268 Return, found 4 hours ago
£268
Return
found 4 hours ago
Select Alaska Airlines flight, departing Sun, 14 Jun from Seattle to Idaho Falls, returning Sun, 21 Jun, priced at £268 found 4 hours ago
Alaska Airlines
Wed, 17 Jun - Wed, 24 Jun
SEA
Seattle
IDA
Idaho Falls
£271 Return, found 4 hours ago
£271
Return
found 4 hours ago
Select Alaska Airlines flight, departing Wed, 17 Jun from Seattle to Idaho Falls, returning Wed, 24 Jun, priced at £271 found 4 hours ago
Alaska Airlines
Wed, 17 Jun - Wed, 24 Jun
SEA
Seattle
IDA
Idaho Falls
£272 Return, found 4 hours ago
£272
Return
found 4 hours ago
Select Alaska Airlines flight, departing Wed, 17 Jun from Seattle to Idaho Falls, returning Wed, 24 Jun, priced at £272 found 4 hours ago
Alaska Airlines
Sun, 14 Jun - Sun, 21 Jun
SEA
Seattle
IDA
Idaho Falls
£279 Return, found 4 hours ago
£279
Return
found 4 hours ago
Select Alaska Airlines flight, departing Sun, 14 Jun from Seattle to Idaho Falls, returning Sun, 21 Jun, priced at £279 found 4 hours ago
Alaska Airlines
Wed, 17 Jun - Wed, 24 Jun
SEA
Seattle
IDA
Idaho Falls
£290 Return, found 4 hours ago
£290
Return
found 4 hours ago
Select Alaska Airlines flight, departing Wed, 17 Jun from Seattle to Idaho Falls, returning Wed, 24 Jun, priced at £290 found 4 hours ago
Alaska Airlines
Wed, 17 Jun - Wed, 24 Jun
SEA
Seattle
IDA
Idaho Falls
£297 Return, found 4 hours ago
£297
Return
found 4 hours ago
Select Alaska Airlines flight, departing Wed, 17 Jun from Seattle to Idaho Falls, returning Wed, 24 Jun, priced at £297 found 4 hours ago
Alaska Airlines
Wed, 17 Jun - Wed, 24 Jun
SEA
Seattle
IDA
Idaho Falls
£301 Return, found 4 hours ago
£301
Return
found 4 hours ago
Select Alaska Airlines flight, departing Wed, 17 Jun from Seattle to Idaho Falls, returning Wed, 24 Jun, priced at £301 found 4 hours ago
Alaska Airlines
Sun, 14 Jun - Sun, 21 Jun
SEA
Seattle
IDA
Idaho Falls
£309 Return, found 4 hours ago
£309
Return
found 4 hours ago
Select Alaska Airlines flight, departing Sun, 14 Jun from Seattle to Idaho Falls, returning Sun, 21 Jun, priced at £309 found 4 hours ago
Alaska Airlines
Sun, 14 Jun - Sun, 21 Jun
SEA
Seattle
IDA
Idaho Falls
£319 Return, found 4 hours ago
£319
Return
found 4 hours ago
Select Alaska Airlines flight, departing Sun, 14 Jun from Seattle to Idaho Falls, returning Sun, 21 Jun, priced at £319 found 4 hours ago

Frequently asked questions

What is the cheapest month to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional)?
April is typically the cheapest month to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional), with average return fares of approximately £199. This is about 29% lower than the average price throughout the year. April often sees lower prices as it falls outside of peak holiday seasons, leading to reduced demand. Other cheap months to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional) include January and March.
How do I find cheap flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional)?
To find a cheap flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional)?
The best airline to fly with from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional) will differ from traveller to traveller. If you like to fly early, AS offers early morning flights. If price is the most important factor, AS typically offers the lowest fares. UA offers the most daily flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional), which is brilliant if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional)?
The best time to fly from Seattle - Tacoma Intl. (SEA) to Idaho Falls Regional (IDA) is typically April or January. Based on booking data from the past year, you can expect to find return flights for around £199 during these months. These periods often offer a good balance of lower prices, allowing you to save on your trip.
How many flights per day from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional)?
There are approximately 26 connecting flights per day from Seattle - Tacoma Intl. (SEA) to Idaho Falls Regional (IDA). Some common connection points include Denver Intl. (DEN), Salt Lake City Intl. (SLC), and Portland Intl. (PDX).
What is the earliest flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional)?
The earliest flight from Seattle - Tacoma Intl. (SEA) to Idaho Falls Regional (IDA) typically departs at approximately 12:05 AM local time, operated by American Airlines. This is a seasonal service active in June. An early departure like this can help maximise your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional)?
You'll typically find the most flights from Seattle - Tacoma Intl. (SEA) to Idaho Falls Regional (IDA) on a Thursday, with around 15 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include Delta Air Lines, United Airlines, and American Airlines. Flight schedules are consistent throughout the week.
What are the most popular departure times for flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional)?
The most popular departure times for flights from Seattle - Tacoma Intl. (SEA) to Idaho Falls Regional (IDA) are in the afternoon, from 12pm to 3pm. About 38% of passengers prefer this time. Many major carriers, including Alaska Airlines, United Airlines and Delta Air Lines, offer flights during this window. This timing works well because it allows for a productive morning before your flight and an afternoon arrival at your destination.
How long does it take to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional)?
Direct flights from SEA to IDA usually take about 1 hour 50 minutes, traveling roughly 565 miles. If you opt for a connecting flight, expect to add around 5 hours 40 minutes to your journey. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional)?
Select the "Business class" and "First class" filters when looking for SEA to IDA flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional) flight with Expedia?
It's easy to earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia. *Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Idaho Falls from Seattle - Tacoma Intl. (SEA)?
If you're planning to travel to Idaho Falls from Seattle - Tacoma Intl. (SEA), you can fly directly into Idaho Falls Regional (IDA) Some flights may connect through major hubs like San Francisco Intl. (SFO), Los Angeles Intl. (LAX), McCarran Intl. (LAS) before reaching Idaho Falls. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional) at the last minute?
Typically, booking a last minute flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional) flight and hotel package?
Securing a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional)?
If you booked your Seattle, WA (SEA-Seattle - Tacoma Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Idaho Falls Regional
Airlines serving
Alaska Airlines
Return price
£219
Distance
903 km
Average flight time
2 hours 46 mins

Book with confidence

Compare flights from Seattle to Idaho Falls easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Seattle to Idaho Falls. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Idaho Falls Regional in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Seattle - Tacoma Intl. to Idaho Falls Regional.  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Seattle - Tacoma Intl. (SEA) to Idaho Falls Regional (IDA)

The easiest way to view the best deals on flights from Seattle to Idaho Falls today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Seattle - Tacoma Intl. to Idaho Falls Regional start at just £220 and range up to £319.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Seattle and Idaho Falls
  • booking your flight during June, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Seattle to Idaho Falls flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Seattle - Tacoma Intl. to Idaho Falls Regional for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Seattle to Idaho Falls easily and book with confidence

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*Available to Expedia members.