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

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Compare Idaho Falls to Seattle flight deals

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Flight deals from Idaho Falls to Seattle

Looking for a cheap last-minute deal or the best return flight from Idaho Falls to Seattle? Find the lowest prices on one-way and return tickets right here.
Seattle.£153 per passenger.Departing Tue, 26 Aug, returning Wed, 27 Aug.Return flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departs from Idaho Falls on Tue, 26 Aug, arriving in Seattle / Tacoma International.Inbound direct flight with Alaska Airlines departs from Seattle / Tacoma International on Wed, 27 Aug, arriving in Idaho Falls.Price includes taxes and charges.From £153, select.
Alaska Airlines
Tue, 26 AugIDA - SEA with Alaska Airlines
Direct
Alaska Airlines
Wed, 27 AugSEA - IDA with Alaska Airlines
Direct
from £153
Seattle.£182 per passenger.Departing Fri, 29 Aug, returning Sun, 7 Sep.Return flight with Delta.Outbound indirect flight with Delta, departs from Idaho Falls on Fri, 29 Aug, arriving in Seattle / Tacoma International.Inbound indirect flight with Delta, departs from Seattle / Tacoma International on Sun, 7 Sep, arriving in Idaho Falls.Price includes taxes and charges.From £182, select.
Fri, 29 AugIDA - SEA with Delta
1 stop
Sun, 7 SepSEA - IDA with Delta
1 stop
from £182
Seattle.£202 per passenger.Departing Thu, 3 Jul, returning Sun, 6 Jul.Return flight with Hawaiian Airlines.Outbound direct flight with Hawaiian Airlines departs from Idaho Falls on Thu, 3 Jul, arriving in Seattle / Tacoma International.Inbound direct flight with Hawaiian Airlines departs from Seattle / Tacoma International on Sun, 6 Jul, arriving in Idaho Falls.Price includes taxes and charges.From £202, select.
Hawaiian Airlines
Thu, 3 JulIDA - SEA with Hawaiian Airlines
Direct
Hawaiian Airlines
Sun, 6 JulSEA - IDA with Hawaiian Airlines
Direct
from £202
Seattle.£203 per passenger.Departing Wed, 25 Jun, returning Wed, 9 Jul.Return flight with Hawaiian Airlines.Outbound direct flight with Hawaiian Airlines departs from Idaho Falls on Wed, 25 Jun, arriving in Seattle / Tacoma International.Inbound direct flight with Hawaiian Airlines departs from Seattle / Tacoma International on Wed, 9 Jul, arriving in Idaho Falls.Price includes taxes and charges.From £203, select.
Hawaiian Airlines
Wed, 25 JunIDA - SEA with Hawaiian Airlines
Direct
Hawaiian Airlines
Wed, 9 JulSEA - IDA with Hawaiian Airlines
Direct
from £203
Seattle.£212 per passenger.Departing Tue, 17 Jun, returning Thu, 7 Aug.Return flight with Delta.Outbound indirect flight with Delta, departs from Idaho Falls on Tue, 17 Jun, arriving in Seattle / Tacoma International.Inbound indirect flight with Delta, departs from Seattle / Tacoma International on Thu, 7 Aug, arriving in Idaho Falls.Price includes taxes and charges.From £212, select.
Tue, 17 JunIDA - SEA with Delta
1 stop
Thu, 7 AugSEA - IDA with Delta
1 stop
from £212
Seattle.£235 per passenger.Departing Tue, 17 Jun, returning Sat, 21 Jun.Return flight with Delta.Outbound indirect flight with Delta, departs from Idaho Falls on Tue, 17 Jun, arriving in Seattle / Tacoma International.Inbound indirect flight with Delta, departs from Seattle / Tacoma International on Sat, 21 Jun, arriving in Idaho Falls.Price includes taxes and charges.From £235, select.
Tue, 17 JunIDA - SEA with Delta
1 stop
Sat, 21 JunSEA - IDA with Delta
1 stop
from £235
Seattle.£254 per passenger.Departing Tue, 17 Jun, returning Thu, 7 Aug.Return flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departs from Idaho Falls on Tue, 17 Jun, arriving in Seattle / Tacoma International.Inbound direct flight with Alaska Airlines departs from Seattle / Tacoma International on Thu, 7 Aug, arriving in Idaho Falls.Price includes taxes and charges.From £254, select.
Alaska Airlines
Tue, 17 JunIDA - SEA with Alaska Airlines
Direct
Alaska Airlines
Thu, 7 AugSEA - IDA with Alaska Airlines
Direct
from £254
Seattle.£256 per passenger.Departing Tue, 17 Jun, returning Tue, 24 Jun.Return flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departs from Idaho Falls on Tue, 17 Jun, arriving in Seattle / Tacoma International.Inbound direct flight with Alaska Airlines departs from Seattle / Tacoma International on Tue, 24 Jun, arriving in Idaho Falls.Price includes taxes and charges.From £256, select.
Alaska Airlines
Tue, 17 JunIDA - SEA with Alaska Airlines
Direct
Alaska Airlines
Tue, 24 JunSEA - IDA with Alaska Airlines
Direct
from £256
How did we find these deals? The deals you see here are the lowest prices for flight tickets from Idaho Falls to Seattle found in the last 4 days, and are subject to change and availability.

Find the cheapest month to fly from Idaho Falls to Seattle

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Idaho Falls to Seattle flights are currently cheapest in August.
Jun
from £235
Jul
from £202
Aug
from £153
Sep
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Oct
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Nov
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Dec
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Jan
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Feb
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Mar
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Apr
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May
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Alternative Idaho Falls to Seattle routes

Looking for the cheapest, fastest or easiest route from Idaho Falls to Seattle? You could fly into the following airports instead.

Idaho Falls to Seattle: Flight information

The things to know before you go.
Cheapest flight found£153
Cheapest month to flyAugust
Average flight time1 hr, 58 mins
Most popular airlineAlaska Airlines
Average flights per week50

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

There are 4 airports in Seattle: Seattle Lake Union SPB, Seattle Boeing Fld, Seattle / Tacoma International, and Paine Field.
The best price we found for a return flight from Idaho Falls to Seattle is £153. 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 58 minutes is the average flight time from Idaho Falls to Seattle.
Alaska Airlines, Hawaiian Airlines and Horizon Air fly direct from Idaho Falls to Seattle.
As of June 2025, there are 50 flights per week flying from Idaho Falls to Seattle.
The cheapest month to fly from Idaho Falls to Seattle is usually June 2025.
If you're flying from Idaho Falls Airport, the cheapest airport near Seattle is Seattle / Tacoma International – which is 12.1 miles away from the centre of Seattle. We've found flights into this airport from £153.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Idaho Falls Airport to Seattle on Tuesday, 26 August 2025.
Yes – the average flight time is 1 hour and 58 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 Seattle 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 Seattle is around 40 days in advance, so don’t leave your flight to the last minute.
In June, the average temperature is usually around 14°C. August is typically the warmest month in Seattle, when it usually averages around 23°C. You can expect the least rain in July. The coldest month is December, with temperatures averaging 0°C. The rainiest month is November.
Currently, Alaska Airlines offers the cheapest flight tickets to Seattle.

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

  • Expect to be travelling for 1 hour 40 minutes. On average, that's the time it takes for a direct flight from Idaho Falls Regional Airport to Seattle.

  • The timezone in Seattle is UTC-7. The city is one hour behind Idaho Falls, where Idaho Falls Regional Airport is located.

  • Idaho Falls Regional Airport (IDA) to Seattle-Tacoma International Airport (SEA) is the most popular route, with 13 flights a week to pick from. If you have things to do before leaving, the last flight from IDA to SEA is with Alaska Airlines at 16:35. Choose the first departure operated by Alaska Airlines at 06:00 if you want to get on your way earlier.

  • Give yourself plenty of time to catch your IDA to Seattle flight. As a general rule, turn up at least two hours before international departures and an hour ahead for domestic flights.

  • Longer lines at check-in and security are likely if you're travelling during high season, so give yourself a bit more breathing room. A good rule for peak times? Get there up to four hours early for international flights and at least two hours for domestic departures.

  • You can book a direct Idaho Falls Regional Airport to Seattle ticket. Start your trip at IDA and touch down at Seattle-Tacoma International Airport (SEA).

  • Look out for offers from Alaska Airlines. This carrier has direct flights from Idaho Falls Regional Airport to Seattle.

  • IDA is about 2 miles from central Idaho Falls. If you're driving, catching a cab or ride-sharing from the centre, it'll take you 10 minutes or so to get there, depending on the traffic. If you're planning to take public transport, expect the trip time to be around 1 hour.

  • Searching for a hotel close to IDA? If you've booked an early flight from Idaho Falls Regional Airport to Seattle, these stays put the terminal practically at your doorstep:

    • Clarion Inn Idaho Falls Riverfront

    • Tru by Hilton Idaho Falls

    • Best Western Driftwood Inn

  • 80.03% of flights departing from Idaho Falls Regional Airport touch down at their destination as planned. With its strong performance rating, you're unlikely to face delays when jetting out of IDA.

  • IDA is located at 2140 North Skyline.

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

  • The lowest price we've seen for a one-way Idaho Falls Regional Airport to Seattle flight is £70. The cheapest price for a return flight is £153. Bear in mind fares can change due to demand at the time of booking.

  • Book six months before you want to fly. Pricing trends show that this is the ideal window for finding cheap flights from IDA to Seattle.

  • The best month for picking up cheap Idaho Falls Regional Airport to Seattle tickets is October. Use the 'Whole month' tool to compare flight prices, then select the dates that offer the lowest fares.

  • Picking up a cheap flight from IDA to Seattle is easy with Price Alerts. Simply set up one of these automatic notifications and we'll notify you when a deal gets even better.

  • Pick your preferred departure and arrival times, number of stops and airlines with our filters. Then, sort the results for your flight from Idaho Falls Regional Airport to Seattle by 'Cheapest,' 'Best' or 'Fastest.'

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

  • Seattle-Tacoma International Airport (SEA) to the centre of Seattle takes around 20 minutes by car. The centre is roughly 14 miles away.

  • It takes around 55 minutes if you're travelling by public transport.

  • If you're arriving on a late flight from Idaho Falls Regional Airport to Seattle, nothing beats the convenience of staying near the terminal. Grab your bags from the carousel and then be showered and relaxing not long after at one of these hotels near SEA:

    • Red Roof Inn Seattle Airport - Seatac

    • DoubleTree by Hilton Seattle Airport

    • Days Inn by Wyndham Seatac Airport

  • Follow your own route with a Seattle-Tacoma International Airport rental car. Pick up your wheels from Thrifty, Europcar or Budget and discover more of Seattle and beyond.

  • Get the best deal by booking your ride from Seattle-Tacoma International Airport around one week ahead of your flight from IDA to Seattle.

Lake Union Sea Plane Base Airport (LKE)

  • Lake Union Sea Plane Base Airport (LKE) is roughly 2 miles from central Seattle. Once you've hopped off your flight from Idaho Falls Regional Airport to Seattle, it'll take you around 10 minutes to reach the heart of the city in a cab or ride-share.

  • Public transport will get you there in about 25 minutes.

  • There are some great places to call home for the night near LKE. Settle in and get cosy after your IDA to Seattle flight at any of these well-located options:

    • Citizenm Seattle South Lake Union

    • Staypineapple, Hotel Five, Downtown Seattle

    • Hotel Max

Best time to go to Seattle

  • Visit Seattle during high season if you like a busy atmosphere, but remember that prices are generally higher. Alternatively, book your flights from Idaho Falls Regional Airport to Seattle during low season when prices are cheaper and crowds are smaller.

  • Before locking in your Idaho Falls Regional Airport to Seattle plane ticket, think about what kind of weather you prefer. August is the warmest month in Seattle, with temperatures ranging from 12ºC (54ºF) to 28ºC (82ºF).

  • If you'd rather travel in cooler conditions, search for a cheap ticket from IDA to Seattle in February when temperatures average between -1ºC (30ºF) and 11ºC (52ºF).

More about Seattle

  • When it comes to searching for somewhere to lay your head, you'll find the most popular stays in Seattle right here. Check out these options after you've booked your flight from Idaho Falls Regional Airport to Seattle:

    • Citizenm Seattle South Lake Union

    • Staypineapple, Hotel Five, Downtown Seattle

    • Hotel Max

  • All great adventures should include a little sightseeing. LMN Architects, Greyhound: Bus Station and Boeing Radiation Effects Lab are essential stops on your Seattle itinerary.

Explore more of United States

  • You've done Seattle, now it's time to discover other corners of United States. Travel about 150 miles south to Portland to tick off its must-visit sights. From Pioneer Courthouse Square to Portland Japanese Garden and Pittock Mansion, you'll have a full itinerary ahead.

  • Around 230 miles east of Seattle, Spokane is another essential stop in United States. Get a taste of what this destination has to offer at Manito Park, Northwest Museum of Arts & Culture and Spokane Falls.

Plan the rest of your trip from Idaho Falls to Seattle

  • Car hire in Seattle
  • Hotels in Seattle

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.

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