£88 Cheap Flights from Idaho Falls (IDA) to Seattle (SEA)

View £88 flight on Wed, 27 May 2026Opens in a new window

Flight 1

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

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

Prices were available within the past 7 days and start at £88 for one-way flights and £161 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Wed, 20 May - Wed, 27 May
IDA
Idaho Falls
SEA
Seattle
£161 Return, found 5 days ago
£161
Return
found 5 days ago
Select Alaska Airlines flight, departing Wed, 20 May from Idaho Falls to Seattle, returning Wed, 27 May, priced at £161 found 5 days ago
Alaska Airlines
Mon, 18 May - Mon, 25 May
IDA
Idaho Falls
SEA
Seattle
£176 Return, found 5 days ago
£176
Return
found 5 days ago
Select Alaska Airlines flight, departing Mon, 18 May from Idaho Falls to Seattle, returning Mon, 25 May, priced at £176 found 5 days ago
Alaska Airlines
Wed, 20 May - Wed, 27 May
IDA
Idaho Falls
SEA
Seattle
£183 Return, found 5 days ago
£183
Return
found 5 days ago
Select Alaska Airlines flight, departing Wed, 20 May from Idaho Falls to Seattle, returning Wed, 27 May, priced at £183 found 5 days ago
Alaska Airlines
Mon, 18 May - Mon, 25 May
IDA
Idaho Falls
SEA
Seattle
£197 Return, found 5 days ago
£197
Return
found 5 days ago
Select Alaska Airlines flight, departing Mon, 18 May from Idaho Falls to Seattle, returning Mon, 25 May, priced at £197 found 5 days ago
Alaska Airlines
Mon, 18 May - Mon, 25 May
IDA
Idaho Falls
SEA
Seattle
£198 Return, found 5 days ago
£198
Return
found 5 days ago
Select Alaska Airlines flight, departing Mon, 18 May from Idaho Falls to Seattle, returning Mon, 25 May, priced at £198 found 5 days ago
Alaska Airlines
Wed, 20 May - Wed, 27 May
IDA
Idaho Falls
SEA
Seattle
£209 Return, found 5 days ago
£209
Return
found 5 days ago
Select Alaska Airlines flight, departing Wed, 20 May from Idaho Falls to Seattle, returning Wed, 27 May, priced at £209 found 5 days ago
Alaska Airlines
Sun, 17 May - Sun, 24 May
IDA
Idaho Falls
SEA
Seattle
£209 Return, found 5 days ago
£209
Return
found 5 days ago
Select Alaska Airlines flight, departing Sun, 17 May from Idaho Falls to Seattle, returning Sun, 24 May, priced at £209 found 5 days ago
Alaska Airlines
Wed, 20 May - Wed, 27 May
IDA
Idaho Falls
SEA
Seattle
£212 Return, found 5 days ago
£212
Return
found 5 days ago
Select Alaska Airlines flight, departing Wed, 20 May from Idaho Falls to Seattle, returning Wed, 27 May, priced at £212 found 5 days ago
Alaska Airlines
Wed, 20 May - Wed, 27 May
IDA
Idaho Falls
SEA
Seattle
£217 Return, found 5 days ago
£217
Return
found 5 days ago
Select Alaska Airlines flight, departing Wed, 20 May from Idaho Falls to Seattle, returning Wed, 27 May, priced at £217 found 5 days ago
Alaska Airlines
Wed, 20 May - Wed, 27 May
IDA
Idaho Falls
SEA
Seattle
£219 Return, found 5 days ago
£219
Return
found 5 days ago
Select Alaska Airlines flight, departing Wed, 20 May from Idaho Falls to Seattle, returning Wed, 27 May, priced at £219 found 5 days ago

Alternative airports near Seattle

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Seattle - Tacoma Intl. SEA. Cheapest option available. Average driving time to city centre is 20 minutes. Flights from £264
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city centre20 min
Flights from £264

Frequently asked questions

What is the cheapest month to fly from Idaho Falls, ID (IDA-Idaho Falls Regional) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
March is typically the cheapest month to fly from Idaho Falls Regional (IDA) to Seattle - Tacoma Intl. (SEA), with average return fares of approximately £218. This is about 19% lower than the average price throughout the year. March often sees lower prices as it's outside of peak holiday seasons, leading to less demand. Other cheap months to fly from Idaho Falls Regional (IDA) to Seattle - Tacoma Intl. (SEA) include February and April.
How do I find cheap flights from Idaho Falls, ID (IDA-Idaho Falls Regional) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
To find a cheap flight from Idaho Falls, ID (IDA-Idaho Falls Regional) to Seattle, WA (SEA-Seattle - Tacoma Intl.), 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 Idaho Falls, ID (IDA-Idaho Falls Regional) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The best airline to fly with from Idaho Falls, ID (IDA-Idaho Falls Regional) to Seattle, WA (SEA-Seattle - Tacoma Intl.) 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. DL offers the most daily flights from Idaho Falls, ID (IDA-Idaho Falls Regional) to Seattle, WA (SEA-Seattle - Tacoma Intl.), which is great 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 Idaho Falls, ID (IDA-Idaho Falls Regional) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The best time to fly from Idaho Falls, ID (IDA-Idaho Falls Regional) to Seattle, WA (SEA-Seattle - Tacoma Intl.) for a good value is typically in February or March. During these months, you can find return flights for around £218. This period often sees lower demand, which can lead to more affordable fares, allowing you to save on your trip.
How many flights per day from Idaho Falls, ID (IDA-Idaho Falls Regional) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
There are approximately 12 connecting flights per day from Idaho Falls Regional (IDA) to Seattle - Tacoma Intl. (SEA). Some common connection points include Salt Lake City Intl. (SLC), Denver Intl. (DEN), and Dallas-Fort Worth Intl. (DFW).
What is the earliest flight from Idaho Falls, ID (IDA-Idaho Falls Regional) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The earliest flight from Idaho Falls Regional (IDA) to Seattle - Tacoma Intl. (SEA) typically departs at approximately 5:00 AM local time, operated by United Airlines and Alaska Airlines. This is a seasonal service active in May. An early departure like this can help you 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 Idaho Falls, ID (IDA-Idaho Falls Regional) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
You'll typically find the most flights from Idaho Falls Regional (IDA) to Seattle - Tacoma Intl. (SEA) on a Thursday, with around 12 flights available. This gives you a good selection of options for your journey. Major airlines on this route include United Airlines, Delta Air Lines, and Alaska Airlines.
What are the most popular departure times for flights from Idaho Falls, ID (IDA-Idaho Falls Regional) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The most popular departure times for flights from Idaho Falls Regional (IDA) to Seattle - Tacoma Intl. (SEA) are in the early morning, from 6am to 9am. Approximately 35% of passengers prefer this time window. Many major carriers, including Alaska Airlines, United Airlines and American Airlines, offer flights during this window. This timing works well because it allows you to get an early start on your travel day, arriving in Seattle with plenty of time for your activities.
How long does it take to fly from Idaho Falls, ID (IDA-Idaho Falls Regional) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
A nonstop flight from IDA to SEA typically takes around 2 hours 20 minutes, covering approximately 565 miles. Connecting flights on this route usually add 3 hours 40 minutes to your travel time. 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 Idaho Falls, ID (IDA-Idaho Falls Regional) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
Select the "Business class" and "First class" filters when looking for IDA to SEA 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 Idaho Falls, ID (IDA-Idaho Falls Regional) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight with Expedia?
It's easy to earn miles on a Idaho Falls, ID (IDA-Idaho Falls Regional) to Seattle, WA (SEA-Seattle - Tacoma Intl.) 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 Seattle from Idaho Falls Regional (IDA)?
If you're planning to travel to Seattle from Idaho Falls Regional (IDA), you can fly directly into Seattle - Tacoma Intl. (SEA) Some flights may connect through major hubs like Seattle - Tacoma Intl. (SEA), Salt Lake City Intl. (SLC), Denver Intl. (DEN) before reaching Seattle. 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 Idaho Falls, ID (IDA-Idaho Falls Regional) to Seattle, WA (SEA-Seattle - Tacoma Intl.) at the last minute?
Typically, booking a last minute flight from Idaho Falls, ID (IDA-Idaho Falls Regional) to Seattle, WA (SEA-Seattle - Tacoma Intl.) 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 Idaho Falls, ID (IDA-Idaho Falls Regional) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight and hotel package?
Securing a Idaho Falls, ID (IDA-Idaho Falls Regional) to Seattle, WA (SEA-Seattle - Tacoma Intl.) 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 Idaho Falls, ID (IDA-Idaho Falls Regional) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
If you booked your Idaho Falls, ID (IDA-Idaho Falls Regional) to Seattle, WA (SEA-Seattle - Tacoma Intl.) 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

0
Origin airport
Idaho Falls Regional
Destination airport
Seattle - Tacoma Intl.
Return price
£160
Distance
903 km

Book with confidence

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

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

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 Idaho Falls Regional (IDA) to Seattle - Tacoma Intl. (SEA)

The easiest way to view the best deals on flights from Idaho Falls to Seattle 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 Idaho Falls Regional to Seattle - Tacoma Intl. start at just £161 and range up to £219.  

To find an even better deal, try  

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

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

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Idaho Falls Regional to Seattle - Tacoma Intl. 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 Idaho Falls to Seattle easily and book with confidence

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