Cheap flights from Illinois (IL) to Denver (DEN)

Flight FAQs

From Illinois to Denver

Are flight prices decreasing from Illinois to Denver due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Illinois and Denver for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

What safety measures are being taken by airlines flying from Illinois to Denver Intl to control the spread of COVID-19?

Delta is one of the many airlines that have implemented additional safety measures to control the spread of COVID-19. Some of the new policies that have been implemented to accommodate travelers flying from Illinois to Denver Intl are improved sanitation, HEPA filters, mask requirements, social distance seating (for a limited time), and pre-flight testing for antibodies and symptoms. Policies will vary by airline.

Which airlines flying from Illinois to Denver Intl have flexible cancellations due to COVID-19?

United Airlines, Spirit Airlines, and Frontier are some of the carriers that may have flexible cancellation policies. You can use our site to filter for other airlines that may also have this kind of flexibility.

Can I find flights from Illinois to Denver for under $100 on Cheapflights?

Yes, there are multiple flights from Illinois to Denver for under $100. The cheapest flight booked recently is on Frontier for just $34, but on average you can expect to pay $45.

Are there nonstop flights from Illinois to Denver for under $100 on Cheapflights?

Cheapflights has at least 20 direct flights from Illinois to Denver under $100. A good price for a nonstop flight from Illinois to Denver is less than $45.

Are there last-minute flights available from Illinois to Denver for under $100?

There are currently 20+ open flights from Illinois to Denver within the next 7 days for less than $100.

What days are nonstop flights available from Illinois to Denver?

Nonstop flights are available for this route on the following days: Monday, Tuesday, Wednesday, Thursday, Friday.

What are the most popular airlines that fly from Illinois to Denver?

Major Airline, American Airlines and Delta are the most popular airlines when flying from Illinois to Denver.

What are the most popular routes from Illinois to Denver?

The most popular route from Illinois to Denver is Chicago O'Hare Intl - Denver Intl. You may also consider Chicago Midway - Denver Intl or Moline Quad-City - Denver Intl.

What are the cheapest Flights from Illinois to Denver?

The cheapest flight price from Illinois to Denver is $47. On average you can expect to pay $455. The most popular route, (Chicago O'Hare Intl - Denver Intl), can usually be booked for $37.

What are the most reliable airlines from Illinois to Denver?

No one likes to see their flight delayed. When booking a flight from Illinois to Denver consider choosing British Airways (100%), United Airlines (88%) or Air Canada (86%) as they are the most reliable in getting you off to your destination on time.

How long is the flight from Illinois to Denver?

There are many flights that can get you from Illinois to Denver in 2h 11m. Fly via Allegiant Air or Frontier to get the fastest option. Generally, flights for this route are nonstop.

What are the cheapest airlines flying from Illinois to Denver round-trip?

Frontier, at $34, was found to be the cheapest airline from Illinois to Denver. An alternate airline flying to your destination would be Spirit Airlines.

What are the cheapest airlines to fly from Illinois to Denver one-way?

$17 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Spirit Airlines and American Airlines, with prices starting from $24 and $30, respectively.