C$226 Cheap Flights from Denver to Idaho Falls

Compare Denver to Idaho Falls flight deals

Find the cheapest month or even day of the year to fly to Idaho Falls

Book the best Idaho Falls fare with no extra fees

Flight deals from Denver to Idaho Falls

Looking for a cheap last-minute deal or the best round-trip flight from Denver to Idaho Falls? Find the lowest prices on one-way and round-trip tickets right here.

Find the cheapest month to fly from Denver to Idaho Falls

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Denver to Idaho Falls flights are currently cheapest in April.

Direct flights from Denver to Idaho Falls

Denver to Idaho Falls: Alternative routes

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

Denver to Idaho Falls: Flight information

The things to know before you go.
Cheapest flight foundC$226
Cheapest month to flyApril
Average flight time1 hr, 48 mins
Most popular airlineUnited
Average flights per week93

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

The best price we found for a return flight from Denver to Idaho Falls is C$257. 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 48 minutes is the average flight time from Denver to Idaho Falls.
United, SkyWest Airlines and Copa fly direct from Denver to Idaho Falls.
As of February 2026, there are 93 flights per week flying from Denver to Idaho Falls.
The cheapest month to fly from Denver to Idaho Falls is usually March.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Denver to Idaho Falls Airport on Wednesday, March 4, 2026.
Yes – the average flight time is 1 hour and 48 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.
The cheapest airline that flies to Idaho Falls is United .

Flying from Denver to Idaho Falls Regional Airport (IDA): what you need to know

  • All good adventures start from Denver's main airport, Denver International Airport (DEN). Check out the options for catching a flight from Denver to Idaho Falls Regional Airport (IDA) leaving from this terminal.

  • The average duration of a direct flight from Denver to Idaho Falls Regional Airport is 1 hour 45 minutes.

  • Idaho Falls Regional Airport is located in Idaho Falls. The city's timezone is UTC-6 — the same as Denver.

  • With 40 direct flights a week between the two airports, Denver International Airport (DEN) to Idaho Falls Regional Airport (IDA) is the busiest route. United operates the earliest flight at 07:45. If you prefer to get more out of your day before flying, the last flight from DEN to IDA is with United at 19:30.

  • Give yourself enough time to get on your flight from Denver to IDA. It's generally best to arrive two hours before international departures and an hour ahead for domestic flights.

  • If you're travelling during a peak month like July, arrive at the terminal even earlier. It's smart to arrive up to four hours before international flights and two hours ahead of domestic departures. Expect lines to be longer during high seasons like Thanksgiving, Christmas and New Year.

Airports in Denver

Denver International Airport (DEN)

  • Denver International Airport (DEN) provides a hassle-free way to reach your destination. Nonstop flights from Denver to Idaho Falls Regional Airport (IDA) depart from this terminal.

  • When leaving from DEN, you can catch a direct flight from Denver to Idaho Falls Regional Airport with United.

  • From the centre of Denver, DEN is around 40 kilometres away. Visit the official airport website or use navigation apps to work out the best way to get there.

  • In search of a place to stay before your flight from Denver to Idaho Falls Regional Airport? Check out SpringHill Suites Denver Airport. Enjoy a good night's sleep here before making your way to Denver International Airport.

About Idaho Falls Regional Airport (IDA)

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

  • Idaho Falls Regional Airport is approximately 5 kilometres from central Idaho Falls. With your own car rental or in a cab, the drive is around 9 minutes.

  • When travelling on public transport, expect a journey time of roughly 59 minutes.

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

  • C$226 is the lowest price we've seen for a one-way ticket from Denver to Idaho Falls Regional Airport. Return flights start from C$257. Prices are subject to change based on availability and may vary at the time of booking.

  • You're more likely to find flight tickets from Denver to IDA when you book 1 month before your departure date. We crunched the flight price data and found that's when fares on this route are generally at their lowest.

  • You'll land the biggest savings on your tickets from Denver to Idaho Falls Regional Airport if you plan your vacation for October. Go one step further and use the 'Whole month' tool to see the cheapest day to fly.

  • Set up a Price Alert for flight tickets from Denver to IDA. You don't need to search every day to see whether prices have dropped. We'll tell you when the price changes.

  • Personalize your trip using filters. Adjust the total duration, number of stops, and arrival and departure times to find the ideal flight from Denver to Idaho Falls Regional Airport. You can also sort the results to see the 'Best,' 'Cheapest' or 'Fastest' options first.

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

  • July is the most popular month for flights from Denver to Idaho Falls Regional Airport. To escape the crowds, visit Idaho Falls in February when things are quieter.

  • The warmest month in Idaho Falls is July, with temperatures ranging between 11ºC and 35ºC. Lock in your flights from Denver to IDA in this month if this is the type of weather you enjoy.

  • If you like cooler conditions, lock in a cheap flight from Denver to Idaho Falls Regional Airport in January when temperatures average between -15ºC and 1ºC.

More about Idaho Falls

  • When it comes to looking for somewhere to lay your head, you'll find the best stays in Idaho Falls right here. Check out these hotels as soon as you've booked your flight from Denver to Idaho Falls Regional Airport:

  • One of the best ways to get to know Idaho Falls is to visit its top attractions. Some highlights include Idaho Falls River Walk, Museum of Idaho and Idaho Falls Zoo at Tautphaus Park.

Complete your Idaho Falls trip with a car rental

  • Finding you a cheap flight from Denver to Idaho Falls Regional Airport isn't the only thing we're good at. Browse our car rentals in Idaho Falls and explore the city on your own terms. We search for deals from trusted car rental providers and put them all in one place. You can instantly compare rates and then book with no fees.

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