Cheap Flights from Colorado to Illinois

Expected price increase 20%
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Average price per month


  • Low Season: January
  • High Season: June
  • Prices for this route are volatile and fluctuate from month to month.
  • The cheapest flights are usually bought in January, September and December.
  • High season months are April, May and June. However, it's not the rule and you should always search current flight deals.
  • For example, the flight from Colorado to Illinois is currently 22% cheaper than average.

Price increase as travel date approaches


  • Flight prices for this route increase by 49% if you book last minute. Hover on the graph above to see for yourself!.
  • To grab the lowest price possible, you should buy your flight around 27 days before departure!
  • Consider booking at least 14 days before departure to increase your chances of getting a low price.
  • Generally, it's safe to book between 90 and 60 days in advance.

Colorado to Illinois Flight Information

Flights Depart FromColorado (DEN)
Flights Arriving ToIllinois (MDW)
Distance1439 km
Current Discount22 %
Average Price $167.45
Good Deal $95.11
Cheapest AirlinesFrontier Airlines, Allegiant Air
Popular AirlinesDelta Air Lines, Allegiant Air, American Airlines, United Airlines, Frontier Airlines
Flight Duration02 hours 05 minutes
Flights Depart From
Colorado (DEN)
Flights Arrive In
Illinois (MDW)
Distance
1439 km
Flight Duration
02 hours 05 minutes
Current Discount
22 %
Average Price
$167.45
Good Deal
$95.11
Cheapest Airlines
Frontier Airlines, Allegiant Air
Popular Airlines
Delta Air Lines, Allegiant Air, American Airlines, United Airlines, Frontier Airlines

Most Reliable Airlines flying to Illinois

Airline Overall Rating On time arrival Check-in & Boarding Cleanliness Customer Service Food & Beverage Entertainment Legroom Seat Comfort
Delta Air Lines Delta Air Lines 3.8 4.5 4.0 4.0 4.0 3.5 4.0 3.5 3.5
Allegiant Air Allegiant Air 3.3 4.0 4.0 4.0 3.5 2.5 1.5 3.0 3.0
American Airlines American Airlines 3.3 4.0 3.5 3.5 3.5 3.0 3.0 3.5 3.0
United Airlines United Airlines 3.3 4.0 3.5 3.5 3.5 3.0 3.0 3.0 3.0
Frontier Airlines Frontier Airlines 2.8 3.5 3.5 3.5 3.0 2.0 1.5 2.5 2.5
Overall Rating
4.0
On time arrival
4.5
Check-in & Boarding
4.0
Cleanliness
4.0
Customer Service
4.0
Food & Beverage
3.5
Entertainment
4.0
Legroom
3.5
Seat Comfort
3.5
Overall Rating
3.5
On time arrival
4.0
Check-in & Boarding
4.0
Cleanliness
4.0
Customer Service
3.5
Food & Beverage
2.5
Entertainment
1.5
Legroom
3.0
Seat Comfort
3.0
Overall Rating
3.5
On time arrival
4.0
Check-in & Boarding
3.5
Cleanliness
3.5
Customer Service
3.5
Food & Beverage
3.0
Entertainment
3.0
Legroom
3.5
Seat Comfort
3.0
Overall Rating
3.5
On time arrival
4.0
Check-in & Boarding
3.5
Cleanliness
3.5
Customer Service
3.5
Food & Beverage
3.0
Entertainment
3.0
Legroom
3.0
Seat Comfort
3.0
Overall Rating
3.0
On time arrival
3.5
Check-in & Boarding
3.5
Cleanliness
3.5
Customer Service
3.0
Food & Beverage
2.0
Entertainment
1.5
Legroom
2.5
Seat Comfort
2.5

Good to know:


Enter your preferred departure airport and travel dates into the search form above to unlock the latest Illinois flight deals.

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How to get the cheapest flight to Illinois?

Currently there is a 22% discount on flights to Illinois. This price won't stay too long and you should consider buying now.

Flight prices for this route are expected to go up by 20%.

Search and compare flight options now!.

Awesome Deals

notifications_active In the past few days the following airlines offered the lowest prices from Colorado to Illinois: Frontier Airlines and Allegiant Air..

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Frequently Asked Questions

  • How long is a direct flight from Colorado to Illinois?A direct flight from Colorado to Illinois takes roughly 02 hours 05 minutes.
  • How many direct flights are there between Colorado to Illinois daily?On average, there are 18 direct flights from Colorado to Illinois each day.
  • Which airlines offer cheap airfare from Colorado to Illinois?That may change at any time. But in the past 14 days, the cheapest tickets we've found were with Frontier Airlines and Allegiant Air.
  • Do I need my passport to fly from Colorado to Illinois?Nope, not this time.
  • Which airlines fly from Colorado to Illinois most often?Delta Air Lines, Allegiant Air, American Airlines, United Airlines and Frontier Airlines are the top.
  • What's the cheapest day to fly from Colorado to Illinois?That depends. Recently, the cheapest day to fly from Colorado to Illinois has been Saturday. And the cheapest return flight from Wednesday has been. That said, the cheapest departure days are constantly changing.
  • Which airport will I be flying from in Colorado?When departing from Colorado you'll be flying out of Denver International.
  • Which airport will I be flying from in Illinois?When departing from Illinois you'll be flying out of Chicago Midway International Airport.
  • How is Justfly.com so good at finding cheap flights?We've taken an oath of secrecy and vowed never to say. Just kidding. Our team and technology allows us to browse through hundreds of airlines and hundreds of thousands of flights to find the lowest prices. Then we pass the savings on to you.
  • Can Justfly.com help me save money in any other way?We're glad you asked. We help you save money with our Fare Alerts, Price Trend charts and multi-ticket bookings. We also help you save on hotels and car rentals.
  • How many airlines does Justfly.com search to find affordable flights?We typically search over 400 airlines.
  • Can Justfly.com's Price Trend tool really tell me the best time to buy tickets?Absolutely! That's why we've made it accessible to you.
  • Will the price of my flight change?Flight prices and availability change often. To counter this, we update the important data as often as possible every step of the way.
  • How will I receive my booking confirmation and travel information?We'll send you an email with the important details!
  • Can you cancel or change Justfly.com flights?You sure can. But give us a call first. We'll do our best to find a solution. However, in some cases, if we cancel your booking, we'll have to charge an administrative fee of $75 (domestic), $125 (trans-border between Canada and USA) and $200 (international).
  • Are Justfly.com's tickets refundable?All bookings are currently non-refundable.
  • How do I contact Justfly.com?To find answers to all of your questions, click here to visit our support page.