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Cheap Flights from Seattle to Idaho Falls

Compare Seattle to Idaho Falls flight deals

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Flight deals from Seattle to Idaho Falls

Looking for a cheap last-minute deal or the best return flight from Seattle to Idaho Falls Airport? If you want to travel next month, return fares start from R 5,784. Find the lowest prices on one-way and return tickets right here.
Idaho Falls.R 1,905 per passenger.Departing Thu, 13 Aug.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Seattle / Tacoma International on Thu, 13 Aug, arriving in Idaho Falls.Price includes taxes and charges.From R 1,905, select.
Idaho Falls.R 2,354 per passenger.Departing Wed, 7 Oct.One-way flight with Delta.Outbound indirect flight with Delta, departs from Seattle / Tacoma International on Wed, 7 Oct, arriving in Idaho Falls.Price includes taxes and charges.From R 2,354, select.
Idaho Falls.R 2,361 per passenger.Departing Sat, 5 Sep.One-way flight with Delta.Outbound indirect flight with Delta, departs from Seattle / Tacoma International on Sat, 5 Sep, arriving in Idaho Falls.Price includes taxes and charges.From R 2,361, select.
Idaho Falls.R 2,896 per passenger.Departing Sat, 29 Aug.One-way flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departs from Seattle / Tacoma International on Sat, 29 Aug, arriving in Idaho Falls.Price includes taxes and charges.From R 2,896, select.
Idaho Falls.R 2,916 per passenger.Departing Thu, 30 Jul.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Seattle / Tacoma International on Thu, 30 Jul, arriving in Idaho Falls.Price includes taxes and charges.From R 2,916, select.
Idaho Falls.R 3,004 per passenger.Departing Wed, 7 Oct.One-way flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departs from Seattle / Tacoma International on Wed, 7 Oct, arriving in Idaho Falls.Price includes taxes and charges.From R 3,004, select.
Idaho Falls.R 3,158 per passenger.Departing Thu, 13 May.One-way flight with Delta.Outbound indirect flight with Delta, departs from Seattle / Tacoma International on Thu, 13 May, arriving in Idaho Falls.Price includes taxes and charges.From R 3,158, select.
Idaho Falls.R 3,189 per passenger.Departing Mon, 2 Nov.One-way flight with Delta.Outbound indirect flight with Delta, departs from Seattle / Tacoma International on Mon, 2 Nov, arriving in Idaho Falls.Price includes taxes and charges.From R 3,189, select.
Idaho Falls.R 3,590 per passenger.Departing Tue, 28 Jul.One-way flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departs from Seattle / Tacoma International on Tue, 28 Jul, arriving in Idaho Falls.Price includes taxes and charges.From R 3,590, select.
Idaho Falls.R 4,771 per passenger.Departing Thu, 8 Apr.One-way flight with Delta.Outbound indirect flight with Delta, departs from Seattle / Tacoma International on Thu, 8 Apr, arriving in Idaho Falls.Price includes taxes and charges.From R 4,771, select.

Find the cheapest month to fly from Seattle to Idaho Falls

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Seattle to Idaho Falls flights are currently cheapest in August.
Jun
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Jul
from R 2,916
Aug
from R 1,905
Sep
from R 2,361
Oct
from R 2,354
Nov
from R 3,189
Dec
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Jan
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Feb
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Mar
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Apr
from R 4,771
May
from R 3,158

Direct flights from Seattle to Idaho Falls

Seattle to Idaho Falls: Alternative routes

Compare routes from Seattle to Idaho Falls below. You may find an airport to fly into that's cheaper, faster, or easier than Idaho Falls.

Idaho Falls

4km from central Idaho Falls
ClosestCheapest
from R 1,905
Search flights

Pocatello

79km from central Idaho Falls
from R 5,028
Search flights

Seattle to Idaho Falls: Flight information

The things to know before you go.
Cheapest flight foundR 1,905
Cheapest month to flyAugust
Average flight time1 hr, 50 mins
Most popular airlineAlaska Airlines
Average flights per week40

Finding cheap flights from Seattle to Idaho Falls: Frequently asked questions

The best price we found for a return flight from Seattle to Idaho Falls is R 3,765. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
1 hour and 50 minutes is the average flight time from Seattle to Idaho Falls.
Alaska Airlines, Qatar Airways and SkyWest Airlines fly direct from Seattle to Idaho Falls.
As of June 2026, there are 40 flights per week flying from Seattle to Idaho Falls.
The cheapest month to fly from Seattle to Idaho Falls is usually August.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Seattle to Idaho Falls Airport on Thursday, 6 August 2026.
Yes – the average flight time is 1 hour and 50 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Idaho Falls but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Idaho Falls is around 40 days in advance, so don’t leave your flight to the last minute.

Flying from Seattle to Idaho Falls Regional Airport (IDA): What you need to know

  • Your next big escape starts at Seattle's main airport, Seattle-Tacoma International Airport (SEA). Check out the options for booking a flight from Seattle to Idaho Falls Regional Airport (IDA) departing from this terminal.

  • The average duration of a direct Seattle to Idaho Falls Regional Airport flight is 1 hour 40 minutes.

  • Idaho Falls Regional Airport is located in Idaho Falls. The city is in the UTC-7 timezone and is one hour ahead of Seattle.

  • With 12 direct flights a week between the two airports, Seattle-Tacoma International Airport (SEA) to Idaho Falls Regional Airport (IDA) is the most popular route. Alaska Airlines operates the earliest flight at 12:40pm. If you'd like to make the most of your day before flying, the last departure from SEA to IDA is with Alaska Airlines at 7:55pm.

  • Your flight from Seattle to IDA won't wait if you're late, so be at the airport on time. Arrive up to one hour in advance for domestic flights and two hours ahead when you're flying internationally.

  • Going away during a peak time like July? High seasons (like spring break and Thanksgiving) can add another hour at security. Play things extra safe and arrive up to four hours ahead of an international flight and two hours before domestic departures.

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

  • Get to your destination in one go from Seattle-Tacoma International Airport (SEA). Nonstop flights from Seattle to Idaho Falls Regional Airport (IDA) operate from here.

  • Alaska Airlines is a popular airline that offers direct flights from Seattle to Idaho Falls Regional Airport departing from SEA.

  • Most passengers prefer to book seats with Alaska Airlines from SEA to IDA.

  • Alaska Airlines leads the way in punctuality. An impressive 82.69% of its services on this route arrive without delay.

  • SEA is around 23 kilometres from central Seattle. If you're ride-sharing, catching a taxi or driving from the centre, it'll take you 25 minutes or so to get there, depending on traffic conditions. If you're taking public transport, expect the trip time to be around 35 minutes.

  • Searching for a comfortable hotel close to Seattle-Tacoma International Airport? If you're catching an early flight from Seattle to Idaho Falls Regional Airport, these accommodation options will have you sleeping moments from your departure lounge:

  • Seattle-Tacoma International Airport scores top marks for on-time performance. 80% of flights that depart SEA arrive at their destination without delay.

Seattle Paine Field International Airport (PAE)

  • PAE is about 40 kilometres from central Seattle. It takes 40 minutes or so to get to the airport in a car from the city centre. Public transport takes roughly 1 hour 30 minutes.

  • Want to treat yourself to an extra night away before catching your Seattle to IDA flight? Relax in a hotel near Seattle Paine Field International Airport before your holiday officially starts. These stays have a room with your name on it:

  • Most flights that leave Seattle Paine Field International Airport reach their destination as expected. It achieves a consistent on-time performance rate of 80%.

About Idaho Falls Regional Airport (IDA)

Getting from Idaho Falls Regional Airport (IDA) to central Idaho Falls

  • From Idaho Falls Regional Airport, central Idaho Falls is around 8 kilometres away. It takes about 10 minutes to get to the city centre by car.

  • It'll take around 30 minutes if you're travelling by public transport.

How to find the cheapest flights from Seattle to Idaho Falls Regional Airport (IDA)

  • Currently, R 1,905 is the lowest price we've found for a one-way ticket from Seattle to Idaho Falls Regional Airport. The cheapest price for a return flight is R 3,765. Keep in mind fares can change due to demand at the time of booking.

  • To find cheap flights from Seattle to IDA, book early. Airlines typically offer the most competitive fares when flights first go on sale.

  • Affordable Seattle to Idaho Falls Regional Airport tickets are easier to find when your travel dates are flexible. Try using the 'Whole month' search function to compare fares throughout the month and then choose the cheapest day.

  • You don't need to check every day to find out if fares have dropped when you set up a Price Alert. We'll notify you the moment a better deal comes up on plane tickets from Seattle to IDA.

  • Uncover a great deal on a flight from Seattle to Idaho Falls Regional Airport with the help of the filters. Choose your preferred arrival and departure times, number of stops and airlines. You can also sort your results by 'Fastest,' 'Cheapest' or 'Best.'

The best time to fly from Seattle to Idaho Falls Regional Airport (IDA)

  • July is when most people book flights from Seattle to Idaho Falls Regional Airport (IDA). Visit Idaho Falls in December if you prefer a quieter experience.

  • The warmest month in Idaho Falls is July, with temperatures ranging between 9ºC (48ºF) and 35ºC (95ºF). Lock in your Seattle to IDA plane ticket then if that's your ideal forecast.

  • January sees temperatures of between -15ºC (5ºF) and 1ºC (34ºF). Look for cheap tickets from Seattle to Idaho Falls Regional Airport around that time if you like cooler conditions.

More about Idaho Falls

  • Start your Idaho Falls trip right by choosing the ideal place to stay. As soon as you've booked your flight from Seattle to Idaho Falls Regional Airport, browse our selection of hotels including:

  • Snake River Greenbelt and Idaho Falls River Walk are just the start of the big attractions to put on your Idaho Falls travel itinerary. Keep the sightseeing going at East Idaho Aquarium.

Explore more of the United States

  • You've visited Idaho Falls, now it's time to discover other corners of the United States. Journey about 257 kilometres south to Ogden to check off its top sights. From Snowbasin Resort to Dinosaur Park and Museum and Ogden Botanical Gardens, your itinerary will be busy.

  • Travel 274 kilometres south from Idaho Falls to visit Layton, another favourite stop in the United States. No trip is complete without seeing SeaQuest Utah and Layton Utah Temple.

Plan the rest of your trip from Seattle to Idaho Falls

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.