Cheap Flights from St. Louis (STL) to Idaho Falls (IDA)

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Idaho Falls Regional Airport (IDA)

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Frequently asked questions

Is it cheaper to buy a plane ticket from STL to IDA last minute?
When it comes to booking your flights, it pays to be prepared. While it's possible to find a last-minute deal on a STL to IDA flight, prices usually don't get cheaper as the date of departure nears. Based on flight pricing and demand studies in 2022, we have found that the sweet spot to lock in a domestic flight is between 28 – 35 days in advance. For international travel it's three to four months.
What airports do you fly into for Idaho Falls from St. Louis?
You have two options when flying from St. Louis to Idaho Falls — Idaho Falls Regional Airport (IDA) and Pocatello Regional Airport (PIH). If you choose to arrive at Idaho Falls Regional Airport (IDA) you'll be roughly 3 kilometers to the northwest of Idaho Falls. Make your way to your hotel and then head out and sample the local sights. Idaho Falls Idaho Temple and Idaho Falls Greenbelt Trail are just a couple of this destination's favorite attractions.
Can I change the date of my flight from Lambert Field to Idaho Falls Regional Airport (IDA)?
Expedia makes it a breeze to make changes to your Lambert Field to Idaho Falls Regional Airport (IDA) trip yourself. Just go to the Expedia Trips portal and tap "change flight." Look for new flights and choose the one that works best. You'll see an estimate of applicable flight change costs. Alternatively, head to our Customer Service portal to chat to our Virtual Agent and quickly get answers to all your questions.

Travel information

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Idaho Falls Regional
Distance
1876 km

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