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

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Home North America USA Colorado Denver Cheap flights from Illinois to Denver

How to find the cheapest flight from
Illinois to Denver (DEN)

How far in advance should I book a flight from Illinois to Denver?

Travelers have found it’s best to book a flight 57 days in advance to save up to 12% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 57 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Illinois to Denver 1-2 weeks in advance for as low as $116, or $131 for flights within the next 24 hours.

Cheap flights from Illinois to Denver in September, October 2020

The best prices found for Illinois to DEN flights for September, October
12 Oct - 14 Oct
$28pp
ORD
Chicago O'Hare Intl
Spirit Airlines
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Spirit Airlines
Non-Stop
ORD
Chicago O'Hare Intl
4 Oct - 8 Oct
$32pp
ORD
Chicago O'Hare Intl
Multiple Airlines
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Spirit Airlines
Non-Stop
ORD
Chicago O'Hare Intl
6 Oct - 8 Oct
$33pp
ORD
Chicago O'Hare Intl
Spirit Airlines
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Spirit Airlines
Non-Stop
ORD
Chicago O'Hare Intl

Illinois to Denver 2020 flight deals

Cheap flights to Denver from Illinois found for this year
12 Oct - 14 Oct
$28pp
ORD
Chicago O'Hare Intl
Spirit Airlines
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Spirit Airlines
Non-Stop
ORD
Chicago O'Hare Intl
4 Oct - 8 Oct
$32pp
ORD
Chicago O'Hare Intl
Multiple Airlines
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Spirit Airlines
Non-Stop
ORD
Chicago O'Hare Intl
6 Oct - 8 Oct
$33pp
ORD
Chicago O'Hare Intl
Spirit Airlines
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Spirit Airlines
Non-Stop
ORD
Chicago O'Hare Intl

Non-stop flights to Denver from Illinois

Save time with Illinois to Denver direct flight deals
12 Oct - 14 Oct
$28pp
ORD
Chicago O'Hare Intl
Spirit Airlines
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Spirit Airlines
Non-Stop
ORD
Chicago O'Hare Intl
28 Oct - 4 Nov
$32pp
ORD
Chicago O'Hare Intl
Spirit Airlines
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Spirit Airlines
Non-Stop
ORD
Chicago O'Hare Intl
6 Oct - 8 Oct
$33pp
ORD
Chicago O'Hare Intl
Spirit Airlines
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Spirit Airlines
Non-Stop
ORD
Chicago O'Hare Intl

Last minute flights from Illinois to Denver

Late deals on round-trip flights to Denver from Illinois, departing today and this week
10 Oct - 17 Oct
$32pp
ORD
Chicago O'Hare Intl
Spirit Airlines
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Spirit Airlines
Non-Stop
ORD
Chicago O'Hare Intl
6 Oct - 8 Oct
$33pp
ORD
Chicago O'Hare Intl
Spirit Airlines
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Spirit Airlines
Non-Stop
ORD
Chicago O'Hare Intl
5 Oct - 7 Oct
$37pp
ORD
Chicago O'Hare Intl
Spirit Airlines
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Spirit Airlines
Non-Stop
ORD
Chicago O'Hare Intl

One-way flights to Denver from Illinois

The cheapest one-way flights from Illinois to Denver
4:45 pm - 6:18 pm
Lufthansa
Nonstop
2h 33m
ORD - DEN
Lufthansa
$46
Travel2Be
3:19 am - 9:28 am
Major Airline
1 Stop
7h 09m
ORD - DEN
Major Airline
$66
StudentUniverse
5:25 pm - 4:44 pm
Multiple Airlines
1 Stop
24h 19m
ORD - DEN
Multiple Airlines
$69
Kiwi.com

Related info for your journey

Useful info, stats and facts about Illinois to Denver flights.

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.

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 Spirit Airlines for just $28, but on average you can expect to pay $41.

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 $42.

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, Thursday, Friday, Saturday.

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 $56. On average you can expect to pay $138. The most popular route, (Chicago O'Hare Intl - Denver Intl), can usually be booked for $32.

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 LOT (100%), Royal Jordanian (100%) or Frontier (98%) 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 34m. Fly via Major Airline or Spirit Airlines to get the fastest option. Generally, flights for this route are nonstop.

What is the cheapest airline to fly from Illinois to Denver round-trip?

Spirit Airlines, at $28, was found to be the cheapest airline from Illinois to Denver..

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

$16 is the cheapest one-way deal found within the past few days, from Spirit Airlines. You may also be able to find cheap deals on Major Airline and Lufthansa, with prices starting from $33 and $46, respectively.

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Destination information for Denver

Things to know before you go. Useful info for your trip from Illinois to Denver
Flight duration
2h 34m
Average temperature for September in Denver
78.8 °F
Avg rainfall for September in Denver
1.1 ″

Airports servicing

Belleville (BLV)
Bloomington (BMI)
Champaign (CMI)
Decatur (DEC)
Moline (MLI)
Marion (MWA)

Airports servicing Denver

Denver (DEN)

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