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Cheap flights from Denver to Illinois from $37

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Denver to Illinois departing on 4/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Denver to Illinois

Cheap round-trip flights

These are some of the best round-trip flight deals from Denver to Illinois that have been recently found on momondo from popular airlines, departing in the coming months.
8:22 pm - 11:52 pmDEN-ORD
2h 30mnonstop
6:00 am - 8:02 amORD-DEN
3h 02mnonstop
$57Frontier
Find Deal
Tue, May 27 - Wed, May 28
8:22 pm - 11:52 pmDEN-ORD
2h 30mnonstop
6:00 am - 7:51 amORD-DEN
2h 51mnonstop
$58Frontier
Find Deal
Tue, May 27 - Wed, Jun 4
5:17 pm - 8:17 pmDEN-PIA
2h 00mnonstop
3:08 pm - 4:27 pmPIA-DEN
2h 19mnonstop
$97Allegiant Air
Find Deal
Fri, Apr 4 - Fri, Apr 11
5:17 pm - 8:17 pmDEN-PIA
2h 00mnonstop
3:08 pm - 4:27 pmPIA-DEN
2h 19mnonstop
$102Allegiant Air
Find Deal
Fri, Apr 11 - Fri, Apr 25
7:20 am - 10:49 amDEN-ORD
2h 29mnonstop
9:45 pm - 11:33 pmORD-DEN
2h 48mnonstop
$160American Airlines
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Sat, May 3 - Mon, May 5
7:00 pm - 10:25 pmDEN-MDW
2h 25mnonstop
5:20 am - 6:55 amMDW-DEN
2h 35mnonstop
$168Southwest
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Fri, May 9 - Sat, May 10
7:00 am - 10:32 amDEN-ORD
2h 32mnonstop
9:45 pm - 11:33 pmORD-DEN
2h 48mnonstop
$169American Airlines
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Thu, May 8 - Mon, May 12
7:00 pm - 10:25 pmDEN-MDW
2h 25mnonstop
9:20 pm - 11:05 pmMDW-DEN
2h 45mnonstop
$169Southwest
Find Deal
Fri, May 9 - Mon, May 12
9:05 pm - 12:35 amDEN-ORD
2h 30mnonstop
9:15 pm - 11:10 pmORD-DEN
2h 55mnonstop
$219United Airlines
Find Deal
Wed, Apr 23 - Wed, Apr 30
5:29 pm - 8:51 pmDEN-PIA
2h 22mnonstop
5:21 pm - 11:10 pmPIA-DEN
6h 49m1 stop
$219United Airlines
Find Deal
Fri, Apr 4 - Fri, Apr 11

American Airlines flights from Denver to Illinois

Our best American Airlines deals on Denver to Illinois flight tickets
American Airlines
May 3
DEN7:20 amDenver Intl
2h 29m
ORD10:49 amChicago O'Hare Intl
May 5
ORD9:45 pmChicago O'Hare Intl
2h 48m
DEN11:33 pmDenver Intl
American Airlines
May 8
DEN7:00 amDenver Intl
2h 32m
ORD10:32 amChicago O'Hare Intl
May 12
ORD9:45 pmChicago O'Hare Intl
2h 48m
DEN11:33 pmDenver Intl
American Airlines
May 1
DEN2:00 pmDenver Intl
2h 33m
ORD5:33 pmChicago O'Hare Intl
May 5
ORD9:45 pmChicago O'Hare Intl
2h 48m
DEN11:33 pmDenver Intl

Frontier flights from Denver to Illinois

Our best Frontier deals on Denver to Illinois flight tickets
Frontier
May 27
DEN8:22 pmDenver Intl
2h 30m
ORD11:52 pmChicago O'Hare Intl
May 28
ORD6:00 amChicago O'Hare Intl
3h 02m
DEN8:02 amDenver Intl
Frontier
May 27
DEN8:22 pmDenver Intl
2h 30m
ORD11:52 pmChicago O'Hare Intl
Jun 4
ORD6:00 amChicago O'Hare Intl
2h 51m
DEN7:51 amDenver Intl
Frontier
Apr 12
DEN9:48 amDenver Intl
2h 29m
ORD1:17 pmChicago O'Hare Intl
Apr 14
ORD6:40 amChicago O'Hare Intl
2h 54m
DEN8:34 amDenver Intl

See travel insights to Illinois from

How to get the cheapest flight ticket from Denver to Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from Denver is in September. Flight prices, which tend to average around $140, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of September, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $151.

What is the cheapest day to depart on your flight to Illinois?

The cheapest day to depart from Denver to Illinois is on a Friday when prices can be found for as low as $284. Flights from Denver to Illinois on a Sunday will generally be more expensive and average around $516. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Illinois?

Our most recent data shows that the best time of day to fly to Illinois is in the evening. Flights from Denver to Illinois during this time can be as low as $168. Flights at noon are often more expensive with an average ticket price of $701.

What is the cheapest Denver Intl to Illinois flight route?

Fly from Denver Intl to Chicago Midway for the best Denver Intl - Illinois flight prices

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

You are more likely to see cheaper flights to Illinois from Denver when booking 5 weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $212 when searching 5 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Denver for as low as $178 on momondo.

What cabin class options are available on Denver Intl to Illinois flights?

There are 4 cabin classes available to choose from on Denver Intl to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Cheap Denver to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Denver to Illinois

Best Price Found

$37

Fastest flight time

1h 58m

Direct flights

Every day

Airports in Illinois

5 airports
The best one-way flight to Illinois from Denver in the past 72 hours is $37. The best round-trip flight deal from Denver to Illinois found on momondo in the last 72 hours is $57.
The fastest flight from Denver to Illinois takes 1h 58m
Direct flights go from Denver to Illinois every day.
There are 5 airports near Illinois: Chicago O'Hare Intl (ORD), Chicago Midway (MDW), Greater Peoria (PIA), Lambert-St Louis (STL), Moline Quad-City (MLI)

  • When did momondo last update prices for flights from Denver Intl Airport to Illinois?

    Prices for flights from Denver Intl Airport to Illinois are updated daily.

  • How many operators does momondo search for flights from Denver Intl Airport to Illinois?

  • How old do you have to be to fly from Denver Intl Airport to Illinois?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Denver Intl Airport to Illinois.

  • What documentation or ID do you need to fly to Illinois?

    The travel and health documents you'll need for your trip to Illinois may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Illinois. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Denver to Illinois?


Best airlines flying from Denver to Illinois

Compare and see reviews for airlines that fly from Denver to Illinois with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $43Free CancellationRating
6.0
3,292 reviews
Search Frontier flights
Allegiant AirPriceFrom $84Free CancellationRating
7.2
736 reviews
Search Allegiant Air flights
American AirlinesPriceFrom $142Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $145Free CancellationRating
7.4
8,623 reviews
Search United Airlines flights
SouthwestPriceFrom $155Free CancellationRating
8.0
4,292 reviews
Search Southwest flights

Why use momondo?

Why should I use momondo to find a flight deal from Denver to Illinois?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Denver to Illinois for you.

Can I find flights from Denver to Illinois with flexible booking policies on momondo?

momondo does allow users to show only those flights to Illinois from Denver which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Denver to Illinois?

Once all potential Denver to Illinois flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Denver to Illinois right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Denver to Illinois now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Illinois and let you know when they change.


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