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

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

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

To save on the cost of your flight from Denver to Illinois, book at least 37 days before your planned departure. Booking around this time can save you about 10% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $177 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $177.

Cheap flights from Denver to Illinois in August, September 2020

The best prices found for DEN to Illinois flights for August, September
12 Aug - 19 Aug
$31pp
DEN
Denver Intl
Multiple Airlines
Non-Stop
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Spirit Airlines
Non-Stop
DEN
Denver Intl
12 Aug - 17 Aug
$32pp
DEN
Denver Intl
Multiple Airlines
Non-Stop
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Spirit Airlines
Non-Stop
DEN
Denver Intl
26 Aug - 1 Sep
$33pp
DEN
Denver Intl
Multiple Airlines
Non-Stop
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Frontier
Non-Stop
DEN
Denver Intl

Denver to Illinois 2020 flight deals

Cheap flights to Illinois from Denver found for this year
12 Aug - 19 Aug
$31pp
DEN
Denver Intl
Multiple Airlines
Non-Stop
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Spirit Airlines
Non-Stop
DEN
Denver Intl
12 Aug - 17 Aug
$32pp
DEN
Denver Intl
Multiple Airlines
Non-Stop
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Spirit Airlines
Non-Stop
DEN
Denver Intl
26 Aug - 1 Sep
$33pp
DEN
Denver Intl
Multiple Airlines
Non-Stop
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Frontier
Non-Stop
DEN
Denver Intl

Non-stop flights to Illinois from Denver

Save time with Denver to Illinois direct flight deals
12 Aug - 19 Aug
$31pp
DEN
Denver Intl
Multiple Airlines
Non-Stop
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Spirit Airlines
Non-Stop
DEN
Denver Intl
12 Aug - 17 Aug
$32pp
DEN
Denver Intl
Multiple Airlines
Non-Stop
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Spirit Airlines
Non-Stop
DEN
Denver Intl
26 Aug - 1 Sep
$33pp
DEN
Denver Intl
Multiple Airlines
Non-Stop
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Frontier
Non-Stop
DEN
Denver Intl

Last minute flights from Denver to Illinois

Late deals on round-trip flights to Illinois from Denver, departing today and this week
28 Jul - 30 Jul
$34pp
DEN
Denver Intl
Multiple Airlines
Non-Stop
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Spirit Airlines
Non-Stop
DEN
Denver Intl
29 Jul - 2 Aug
$35pp
DEN
Denver Intl
Multiple Airlines
Non-Stop
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Spirit Airlines
Non-Stop
DEN
Denver Intl
25 Jul - 19 Sep
$39pp
DEN
Denver Intl
Multiple Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Frontier
Non-Stop
DEN
Denver Intl

One-way flights to Illinois from Denver

The cheapest one-way flights from Denver to Illinois
1:53 am - 5:20 am
Major Airline
Nonstop
2h 27m
DEN - ORD
Major Airline
$33
StudentUniverse
6:04 am - 2:28 pm
Allegiant Air
1 Stop
7h 24m
DEN - ORD
Allegiant Air
$42
Ovago
8:20 am - 11:56 am
Spirit Airlines
Nonstop
2h 36m
DEN - ORD
Spirit Airlines
$53
FlightNetwork

Related info for your journey

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

Flight FAQs

From Denver to Illinois

Are flight prices decreasing from Denver to Illinois 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 Denver and Illinois 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 Denver to Illinois for under $100 on Cheapflights?

Yes, there are multiple flights from Denver to Illinois for under $100. The cheapest flight booked recently is on Multiple Airlines for just $31, but on average you can expect to pay $42.

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

Cheapflights has at least 20 direct flights from Denver to Illinois under $100. A good price for a nonstop flight from Denver to Illinois is less than $43.

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

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

What days are nonstop flights available from Denver to Illinois?

Days when nonstop flights are available for this flight are: Sunday, Friday, Saturday.

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

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

What are the most popular routes from Denver to Illinois?

While some choose either Denver Intl - Chicago Midway or Denver Intl - Bloomington-Normal, Denver Intl - Chicago O'Hare Intl is the most popular route from Denver to Illinois.

What are the cheapest Flights from Denver to Illinois?

Looking at all options, your cheapest flight can be booked for $55. While the most popular route (Denver Intl - Chicago O'Hare Intl) can be booked for $31 on average our data indicates $141 when flying from Denver to Illinois

What are the most reliable airlines from Denver to Illinois?

Consider Japan Airlines (100%), Austrian Airlines (100%) or Copa Airlines (100%) when booking your flight. These represent the most reliable airlines when flying from Denver to Illinois.

How long is the flight from Denver to Illinois?

Departing from Denver to Illinois will take you 2h 18m. All flights are typically nonstop.

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

Flying on Spirit Airlines is currently your cheapest option to Illinois, with prices starting at $34. Another option worth looking into is Allegiant Air, starting at $49 round trip.

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

To fly one-way, consider booking your trip with Spirit Airlines, which is currently one of the cheapest options available, starting at $16. Major Airline flights start at $23 while deals on Allegiant Air start at $42 one-way.

Destination information for Illinois

Things to know before you go. Useful info for your trip from Denver to Illinois
Flight duration
2h 34m

Airports servicing Denver

Airports servicing

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