£149 Cheap Flights from Idaho Falls (IDA) to Denver (DEN)

View £149 flight on Wed, 27 May 2026Opens in a new window

Popular airlines from Idaho Falls Regional Airport (IDA) to Denver International Airport (DEN)

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Cheap Flights from Idaho Falls (IDA) to Denver (DEN)

Prices were available within the past 7 days and start at £149 for one-way flights and £320 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Wed, 20 May - Wed, 27 May
IDA
Idaho Falls
DEN
Denver
£320 Return, found 6 days ago
£320
Return
found 6 days ago
Select Alaska Airlines flight, departing Wed, 20 May from Idaho Falls to Denver, returning Wed, 27 May, priced at £320 found 6 days ago
Alaska Airlines
Wed, 20 May - Wed, 27 May
IDA
Idaho Falls
DEN
Denver
£343 Return, found 6 days ago
£343
Return
found 6 days ago
Select Alaska Airlines flight, departing Wed, 20 May from Idaho Falls to Denver, returning Wed, 27 May, priced at £343 found 6 days ago
Alaska Airlines
Wed, 20 May - Wed, 27 May
IDA
Idaho Falls
DEN
Denver
£361 Return, found 6 days ago
£361
Return
found 6 days ago
Select Alaska Airlines flight, departing Wed, 20 May from Idaho Falls to Denver, returning Wed, 27 May, priced at £361 found 6 days ago
Alaska Airlines
Wed, 20 May - Wed, 27 May
IDA
Idaho Falls
DEN
Denver
£364 Return, found 6 days ago
£364
Return
found 6 days ago
Select Alaska Airlines flight, departing Wed, 20 May from Idaho Falls to Denver, returning Wed, 27 May, priced at £364 found 6 days ago
Alaska Airlines
Wed, 20 May - Wed, 27 May
IDA
Idaho Falls
DEN
Denver
£375 Return, found 6 days ago
£375
Return
found 6 days ago
Select Alaska Airlines flight, departing Wed, 20 May from Idaho Falls to Denver, returning Wed, 27 May, priced at £375 found 6 days ago
Alaska Airlines
Wed, 20 May - Wed, 27 May
IDA
Idaho Falls
DEN
Denver
£376 Return, found 6 days ago
£376
Return
found 6 days ago
Select Alaska Airlines flight, departing Wed, 20 May from Idaho Falls to Denver, returning Wed, 27 May, priced at £376 found 6 days ago
Alaska Airlines
Mon, 18 May - Mon, 25 May
IDA
Idaho Falls
DEN
Denver
£379 Return, found 6 days ago
£379
Return
found 6 days ago
Select Alaska Airlines flight, departing Mon, 18 May from Idaho Falls to Denver, returning Mon, 25 May, priced at £379 found 6 days ago
Alaska Airlines
Wed, 20 May - Wed, 27 May
IDA
Idaho Falls
DEN
Denver
£380 Return, found 6 days ago
£380
Return
found 6 days ago
Select Alaska Airlines flight, departing Wed, 20 May from Idaho Falls to Denver, returning Wed, 27 May, priced at £380 found 6 days ago
Alaska Airlines
Wed, 20 May - Wed, 27 May
IDA
Idaho Falls
DEN
Denver
£383 Return, found 6 days ago
£383
Return
found 6 days ago
Select Alaska Airlines flight, departing Wed, 20 May from Idaho Falls to Denver, returning Wed, 27 May, priced at £383 found 6 days ago
Alaska Airlines
Sun, 17 May - Sun, 24 May
IDA
Idaho Falls
DEN
Denver
£387 Return, found 6 days ago
£387
Return
found 6 days ago
Select Alaska Airlines flight, departing Sun, 17 May from Idaho Falls to Denver, returning Sun, 24 May, priced at £387 found 6 days ago

Alternative airports near Denver

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Denver Intl. DEN. Cheapest option available. Average driving time to city centre is 32 minutes. Flights from £512
DEN
Denver Intl.
Cheapest
Average driving time to city centre32 min
Flights from £512

Frequently asked questions

Which airlines fly direct from Idaho Falls, ID (IDA-Idaho Falls Regional) to Denver, CO (DEN-Denver Intl.)?
Enter IDA to DEN and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from Idaho Falls, ID (IDA-Idaho Falls Regional) to Denver, CO (DEN-Denver Intl.)?
To find a cheap flight from Idaho Falls, ID (IDA-Idaho Falls Regional) to Denver, CO (DEN-Denver Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Idaho Falls, ID (IDA-Idaho Falls Regional) to Denver, CO (DEN-Denver Intl.)?
The best airline to fly with from Idaho Falls, ID (IDA-Idaho Falls Regional) to Denver, CO (DEN-Denver Intl.) will differ from traveller to traveller. If you like to fly early, UA offers early morning flights. If price is the most important factor, UA typically offers the lowest fares. AS offers the most daily flights from Idaho Falls, ID (IDA-Idaho Falls Regional) to Denver, CO (DEN-Denver Intl.), which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Idaho Falls, ID (IDA-Idaho Falls Regional) to Denver, CO (DEN-Denver Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Idaho Falls, ID (IDA-Idaho Falls Regional) to Denver, CO (DEN-Denver Intl.)?
There are approximately 5 nonstop flights per day from Idaho Falls Regional (IDA) to Denver Intl. (DEN). For even more choice, look at flights that include layovers, as there are around 7 connecting flights per day. Some common connection points include Seattle - Tacoma Intl. (SEA), Portland Intl. (PDX), and Salt Lake City Intl. (SLC).
What is the earliest flight from Idaho Falls, ID (IDA-Idaho Falls Regional) to Denver, CO (DEN-Denver Intl.)?
The earliest flight from Idaho Falls Regional (IDA) to Denver Intl. (DEN) typically departs at approximately 5:00 AM local time, operated by United Airlines. This is a seasonal service active in May. An early departure like this can help maximise your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Idaho Falls, ID (IDA-Idaho Falls Regional) to Denver, CO (DEN-Denver Intl.)?
If you're flying from Idaho Falls Regional (IDA) to Denver Intl. (DEN), you'll typically find the most flights on a Friday, with around 12 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include United Airlines, Delta Air Lines, and Alaska Airlines. Flight options are fairly consistent throughout the week, with Fridays having about 15% more flights than other days.
What are the most popular departure times for flights from Idaho Falls, ID (IDA-Idaho Falls Regional) to Denver, CO (DEN-Denver Intl.)?
The most popular departure times for flights from Idaho Falls Regional (IDA) to Denver Intl. (DEN) are in the early morning, from 6am to 9am. About 31% of passengers prefer this time. Many major carriers, including Alaska Airlines and United Airlines, offer flights during this window. This timing works well for travelers who want to get an early start to their day in Denver.
How long does it take to fly from Idaho Falls, ID (IDA-Idaho Falls Regional) to Denver, CO (DEN-Denver Intl.)?
Direct flights from IDA to DEN usually take about 2 hours, traveling roughly 458 miles. If you opt for a connecting flight, expect to add around 1 hour 30 minutes to your journey. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Idaho Falls, ID (IDA-Idaho Falls Regional) to Denver, CO (DEN-Denver Intl.)?
Select the "Business class" and "First class" filters when looking for IDA to DEN flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Idaho Falls, ID (IDA-Idaho Falls Regional) to Denver, CO (DEN-Denver Intl.) flight with Expedia?
It's easy to earn miles on a Idaho Falls, ID (IDA-Idaho Falls Regional) to Denver, CO (DEN-Denver Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia. *Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Denver from Idaho Falls Regional (IDA)?
From Idaho Falls Regional (IDA), you can fly directly into Denver Intl. (DEN) to reach Denver. Some flights may connect through major hubs like Seattle - Tacoma Intl. (SEA), Portland Intl. (PDX), Salt Lake City Intl. (SLC) before reaching Denver. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Idaho Falls, ID (IDA-Idaho Falls Regional) to Denver, CO (DEN-Denver Intl.) at the last minute?
Typically, booking a last minute flight from Idaho Falls, ID (IDA-Idaho Falls Regional) to Denver, CO (DEN-Denver Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Idaho Falls, ID (IDA-Idaho Falls Regional) to Denver, CO (DEN-Denver Intl.) flight and hotel package?
Securing a Idaho Falls, ID (IDA-Idaho Falls Regional) to Denver, CO (DEN-Denver Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Idaho Falls, ID (IDA-Idaho Falls Regional) to Denver, CO (DEN-Denver Intl.)?
If you booked your Idaho Falls, ID (IDA-Idaho Falls Regional) to Denver, CO (DEN-Denver Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Idaho Falls Regional
Destination airport
Denver Intl.
Return price
£320
Distance
732 km
Average flight time
1 hour 53 mins

Book with confidence

Compare flights from Idaho Falls to Denver easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Idaho Falls to Denver. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Denver Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Idaho Falls Regional to Denver Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Idaho Falls Regional (IDA) to Denver Intl. (DEN)

The easiest way to view the best deals on flights from Idaho Falls to Denver today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Idaho Falls Regional to Denver Intl. start at just £320 and range up to £387.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Idaho Falls and Denver
  • booking your flight during May, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Idaho Falls to Denver flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Idaho Falls Regional to Denver Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Idaho Falls to Denver easily and book with confidence

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