Cheap Flights from Seattle to Idaho Falls

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Flight deals from Seattle to Idaho Falls Airport

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 $553. Find the lowest prices on one-way and return tickets right here.

Idaho Falls.$468 per passenger.Departing Mon, 10 Aug, returning Wed, 19 Aug.Return flight with Delta.Outbound indirect flight with Delta, departs from Seattle / Tacoma International on Mon, 10 Aug, arriving in Idaho Falls.Inbound indirect flight with Delta, departs from Idaho Falls on Wed, 19 Aug, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $468, select.

Idaho Falls.$468 per passenger.Departing Sat, 9 May, returning Mon, 11 May.Return flight with Delta.Outbound indirect flight with Delta, departs from Seattle / Tacoma International on Sat, 9 May, arriving in Idaho Falls.Inbound indirect flight with Delta, departs from Idaho Falls on Mon, 11 May, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $468, select.

Idaho Falls.$553 per passenger.Departing Wed, 15 Apr, returning Wed, 22 Apr.Return flight with Delta.Outbound indirect flight with Delta, departs from Seattle / Tacoma International on Wed, 15 Apr, arriving in Idaho Falls.Inbound indirect flight with Delta, departs from Idaho Falls on Wed, 22 Apr, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $553, select.

Idaho Falls.$554 per passenger.Departing Fri, 29 May, returning Mon, 1 Jun.Return flight with Delta.Outbound indirect flight with Delta, departs from Seattle / Tacoma International on Fri, 29 May, arriving in Idaho Falls.Inbound indirect flight with Delta, departs from Idaho Falls on Mon, 1 Jun, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $554, select.

Idaho Falls.$943 per passenger.Departing Mon, 27 Apr, returning Sat, 23 May.Return flight with Delta.Outbound indirect flight with Delta, departs from Seattle / Tacoma International on Mon, 27 Apr, arriving in Idaho Falls.Inbound indirect flight with Delta, departs from Idaho Falls on Sat, 23 May, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $943, select.

Idaho Falls.$943 per passenger.Departing Sat, 14 Mar, returning Mon, 16 Mar.Return flight with Delta.Outbound indirect flight with Delta, departs from Seattle / Tacoma International on Sat, 14 Mar, arriving in Idaho Falls.Inbound indirect flight with Delta, departs from Idaho Falls on Mon, 16 Mar, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $943, select.

Idaho Falls.$1,365 per passenger.Departing Fri, 27 Mar, returning Sun, 3 May.Return flight with Delta.Outbound indirect flight with Delta, departs from Seattle / Tacoma International on Fri, 27 Mar, arriving in Idaho Falls.Inbound indirect flight with Delta, departs from Idaho Falls on Sun, 3 May, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,365, 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 May.

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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 $468

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Pocatello

79km from central Idaho Falls

from $855

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Seattle to Idaho Falls: Flight information

The things to know before you go.

Cheapest flight found	$468
Cheapest month to fly	August
Average flight time	1 hr, 47 mins
Most popular airline	Alaska Airlines
Average flights per week	44

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

How much are return flights from Seattle to Idaho Falls?

The best price we found for a return flight from Seattle to Idaho Falls is $468. 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.

How long does it take to fly from Seattle to Idaho Falls?

1 hour and 47 minutes is the average flight time from Seattle to Idaho Falls.

Which airlines fly direct from Seattle to Idaho Falls?

Alaska Airlines, SkyWest Airlines and Qatar Airways fly direct from Seattle to Idaho Falls.

How many flights are there a week from Seattle to Idaho Falls?

As of March 2026, there are 42 flights per week flying from Seattle to Idaho Falls.

When is the cheapest time to fly from Seattle to Idaho Falls?

The cheapest month to fly from Seattle to Idaho Falls is usually August.

Which upcoming date is cheapest to fly from Seattle to Idaho Falls Airport on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Seattle to Idaho Falls Airport on Monday, 10 August 2026.

Can I get a direct flight from Seattle to Idaho Falls Airport?

Yes – the average flight time is 1 hour and 47 minutes.

How can I find the best flight deal to Idaho Falls?

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.

When is the best time to book flights to Idaho Falls?

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.

Which is the cheapest airline to fly from Seattle to Idaho Falls with?

The cheapest airline that flies to Idaho Falls is Delta .

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

Get your travels underway at Seattle-Tacoma International Airport (SEA), the main airport in Seattle. Search for flights from Seattle to Idaho Falls Regional Airport (IDA) that jet out of this base.
Around 1 hour 40 minutes is the typical travel time on a direct Seattle to Idaho Falls Regional Airport flight.
Idaho Falls is one hour ahead of Seattle. Idaho Falls Regional Airport is located in Idaho Falls, which follows the UTC-6 timezone.
The busiest route is from Seattle-Tacoma International Airport (SEA) to Idaho Falls Regional Airport (IDA), with 13 direct services every week. If you want to be on your way right away, the earliest flight from SEA to IDA is the 12:40pm Alaska Airlines option. If a later flight fits your day better, the last departure is at 7:55pm with Alaska Airlines.
Your flight from Seattle to IDA won't wait if you're running late, so get to the airport with time to spare. Arrive up to one hour in advance for domestic flights and two hours ahead when you're travelling internationally.
During high season, expect extended wait times and arrive earlier. Aim for at least two hours ahead for domestic flights and as much as four hours for international journeys.

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

Seattle-Tacoma International Airport (SEA) is a convenient option for travelling directly to your destination. Nonstop flights from Seattle to Idaho Falls Regional Airport (IDA) leave from this terminal.
Alaska Airlines is a well-known carrier that operates direct flights from Seattle to Idaho Falls Regional Airport jetting out of SEA.
Alaska Airlines sees the most traveller bookings for flights from SEA to IDA.
Alaska Airlines leads the way as the most punctual carrier on this route, with 83.64% of services landing on schedule.
Located around 23 kilometres from the centre of Seattle, SEA can be reached in about 20 minutes by car (depending on traffic). The journey by public transport takes roughly 55 minutes.
Want a leisurely start to your journey? Stay near Seattle-Tacoma International Airport. Whether you're catching an early flight from Seattle to Idaho Falls Regional Airport or just don't want to be rushed, these hotels offer the perfect solution:
Seattle-Tacoma International Airport scores high marks for on-time performance. 81.27% of flights that depart SEA arrive at their destination as scheduled.

Lake Union Sea Plane Base Airport (LKE)

LKE is around 3 kilometres from central Seattle. It'll take 10 minutes or so to get to the airport by car from the city centre. Public transport takes roughly 25 minutes.
Get your holiday started early with an additional night away from home. Before catching your Seattle to IDA flight, unwind in one of these hotels close to Lake Union Sea Plane Base Airport:

About Idaho Falls Regional Airport (IDA)

Have a late flight from Seattle to Idaho Falls Regional Airport? Don't let it stretch your travel day into tomorrow. Stay at one of these hotels near IDA and shut your eyes sooner:
You'll find IDA at 2140 North Skyline.

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

Idaho Falls Regional Airport is about 3 kilometres from central Idaho Falls. How long it'll take to get there in a car hire or cab depends on the time of day. Do a little research before your trip.
Travelling on public transport will take you around 1 hour.

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

At the moment, $261 is the best price we've found for a one-way ticket from Seattle to Idaho Falls Regional Airport. The cheapest price for a return flight is $468. Remember fares can change due to availability at the time of booking.
Booking ahead of time is often the key to scoring a cheap flight from Seattle to IDA. Fares tend to rise as demand increases, so the closer your departure date, the more you'll likely pay.
If you're flexible with your travel plans, use the 'Whole month' search tool. It'll give you the lowest price across every month when searching for your Seattle to Idaho Falls Regional Airport ticket.
Locking in a cheap flight ticket from Seattle to IDA couldn't be easier with Price Alerts. All you need to do is set up one of these automatic alerts and we'll notify you as soon as the price has dropped.
Find an affordable flight from Seattle to Idaho Falls Regional Airport by using the search filters. Choose your preferred departure time, duration and airlines, then sort the results by 'Cheapest' for the best deals.

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). Plan your visit to Idaho Falls in February if you'd rather be there when it's quieter.
Before locking in your Seattle to IDA flight ticket, consider the kind of weather forecast you're hoping for. July is the warmest month in Idaho Falls, with temperatures ranging from 11ºC to 35ºC.
Look for cheap tickets from Seattle to Idaho Falls Regional Airport in January if you'd rather travel when it's cooler. Temperatures are at their lowest then, ranging between -15ºC and 1ºC.

More about Idaho Falls

Start your Idaho Falls trip off on the right foot by choosing the perfect place to stay. Once you've booked your flight from Seattle to Idaho Falls Regional Airport, explore our range of hotels including:
Every great journey has to include some sightseeing. Idaho Falls River Walk, Shadow's Park and Snake River Landing are essential stops on your Idaho Falls itinerary.

Explore more of the United States

You've seen Idaho Falls, now it's time to explore other parts of the United States. Travel around 257 kilometres south to Ogden to check off its top attractions. From Snowbasin Resort to Dinosaur Park and Museum and Mt. Ogden Park-East Field (#4080), there's plenty to keep you on the go.
Around 274 kilometres south of Idaho Falls, Layton is another essential stop in the United States. No visit is complete without checking out Adams Canyon Trail, SeaQuest Utah and SeaQuest Interactive Aquarium.