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Cheap flights from Denver to Illinois from $31

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 12/4. 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.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from Denver to Illinois.

Cheap last minute flights

Planning a quick getaway from Denver to Illinois? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to Illinois, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from Denver to Illinois

Find recent round-trip train or bus tickets from Denver to Illinois.

All round-trip flight deals to Illinois

The cheapest plane tickets to Illinois found on KAYAK recently.
8:55 pm - 12:13 amDEN-MDW
2h 18mnonstop
10:27 pm - 12:20 amMDW-DEN
2h 53mnonstop
$66Frontier
Find Deal
Fri, Dec 13 - Wed, Dec 18
8:55 pm - 12:13 amDEN-MDW
2h 18mnonstop
7:15 am - 9:05 amMDW-DEN
2h 50mnonstop
$67Frontier
Find Deal
Wed, Dec 11 - Thu, Dec 12
1:00 pm - 4:35 pmDEN-ORD
2h 35mnonstop
5:35 pm - 7:16 pmORD-DEN
2h 41mnonstop
$139American Airlines
Find Deal
Wed, Jan 22 - Sat, Jan 25
7:00 am - 10:45 amDEN-ORD
2h 45mnonstop
1:38 pm - 3:18 pmORD-DEN
2h 40mnonstop
$159American Airlines
Find Deal
Sat, Dec 14 - Wed, Dec 18
8:29 pm - 11:59 pmDEN-ORD
2h 30mnonstop
4:08 pm - 5:59 pmORD-DEN
2h 51mnonstop
$163United Airlines
Find Deal
Thu, Jan 9 - Sat, Jan 11
6:00 am - 9:31 amDEN-ORD
2h 31mnonstop
9:36 pm - 11:19 pmORD-DEN
2h 43mnonstop
$169United Airlines
Find Deal
Wed, Dec 11 - Sun, Dec 15
3:45 pm - 7:05 pmDEN-MDW
2h 20mnonstop
8:20 am - 10:05 amMDW-DEN
2h 45mnonstop
$170Southwest
Find Deal
Sat, Dec 14 - Wed, Dec 18
5:50 am - 9:15 amDEN-MDW
2h 25mnonstop
10:40 pm - 12:20 amMDW-DEN
2h 40mnonstop
$206Southwest
Find Deal
Sun, Dec 29 - Thu, Jan 2
12:50 am - 7:46 amDEN-ORD
5h 56m1 stop
6:20 am - 1:17 pmORD-DEN
7h 57m1 stop
$215Delta
Find Deal
Wed, Dec 11 - Sun, Dec 15
12:50 am - 7:46 amDEN-ORD
5h 56m1 stop
6:20 am - 1:17 pmORD-DEN
7h 57m1 stop
$216Delta
Find Deal
Thu, Dec 12 - Sun, Dec 15
5:05 am - 8:13 amDEN-STL
2h 08mnonstop
$31Frontier
Find Deal
Wed, Dec 4
1:52 pm - 5:25 pmDEN-ORD
2h 33mnonstop
$33Frontier
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Sat, Feb 15
6:00 am - 9:38 amDEN-ORD
2h 38mnonstop
$70United Airlines
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Sat, Jan 25
9:40 am - 12:48 pmDEN-STL
2h 08mnonstop
$79United Airlines
Find Deal
Tue, Feb 11
7:00 am - 10:45 amDEN-ORD
2h 45mnonstop
$80American Airlines
Find Deal
Sat, Dec 14
6:28 am - 10:10 amDEN-ORD
2h 42mnonstop
$98American Airlines
Find Deal
Mon, Dec 30
12:50 am - 8:58 amDEN-MDW
7h 08m1 stop
$108Delta
Find Deal
Wed, Dec 11
2:21 pm - 9:58 pmDEN-ORD
6h 37m1 stop
$112Delta
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Sat, Mar 1
11:18 pm - 8:06 amDEN-ORD
7h 48m1 stop
$171JetBlue
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Sat, Dec 7
12:35 am - 9:18 amDEN-ORD
7h 43m1 stop
$181JetBlue
Find Deal
Wed, Dec 11
8:40 am - 12:15 pmDEN-ORD
2h 35mnonstop
4:48 pm - 6:39 pmORD-DEN
2h 51mnonstop
$95Frontier
Find Deal
Mon, Nov 25 - Fri, Nov 29
5:21 pm - 8:42 pmDEN-MDW
2h 21mnonstop
7:00 am - 8:46 amMDW-DEN
2h 46mnonstop
$107Frontier
Find Deal
Mon, Nov 25 - Fri, Nov 29
7:00 am - 10:42 amDEN-ORD
2h 42mnonstop
8:50 pm - 10:33 pmORD-DEN
2h 43mnonstop
$229American Airlines
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Tue, Nov 26 - Tue, Dec 3
6:40 am - 2:24 pmDEN-ORD
6h 44m1 stop
8:50 pm - 10:33 pmORD-DEN
2h 43mnonstop
$269American Airlines
Find Deal
Tue, Nov 26 - Tue, Dec 3
12:55 am - 8:15 amDEN-ORD
6h 20m1 stop
9:45 am - 4:12 pmORD-DEN
7h 27m1 stop
$336Delta
Find Deal
Tue, Nov 26 - Tue, Dec 3
12:55 am - 9:32 amDEN-MDW
7h 37m1 stop
9:30 am - 4:12 pmMDW-DEN
7h 42m1 stop
$336Delta
Find Deal
Tue, Nov 26 - Tue, Dec 3
11:15 am - 5:11 pmDEN-MLI
4h 56m1 stop
9:41 pm - 11:15 pmMLI-DEN
2h 34mnonstop
$359United Airlines
Find Deal
Tue, Nov 26 - Sun, Dec 1
6:45 pm - 12:20 amDEN-MDW
4h 35m1 stop
9:55 am - 1:25 pmMDW-DEN
4h 30m1 stop
$364Southwest
Find Deal
Tue, Nov 26 - Fri, Nov 29
7:49 am - 3:16 pmDEN-MLI
6h 27m1 stop
9:41 pm - 11:15 pmMLI-DEN
2h 34mnonstop
$369United Airlines
Find Deal
Sat, Nov 23 - Sat, Nov 30
5:25 am - 1:00 pmDEN-ORD
6h 35m1 stop
7:30 am - 4:35 pmORD-DEN
10h 05m2 stops
$372Southwest
Find Deal
Tue, Nov 26 - Tue, Dec 3
8:55 pm - 12:13 amDEN-MDW
2h 18mnonstop
10:27 pm - 12:20 amMDW-DEN
2h 53mnonstop
$66Frontier
Find Deal
Fri, Dec 13 - Wed, Dec 18
8:55 pm - 12:13 amDEN-MDW
2h 18mnonstop
7:15 am - 9:05 amMDW-DEN
2h 50mnonstop
$67Frontier
Find Deal
Wed, Dec 11 - Thu, Dec 12
6:39 pm - 9:38 pmDEN-PIA
1h 59mnonstop
11:15 am - 12:43 pmPIA-DEN
2h 28mnonstop
$84Allegiant Air
Find Deal
Fri, Jan 3 - Fri, Jan 10
12:23 pm - 3:22 pmDEN-PIA
1h 59mnonstop
10:08 am - 11:33 amPIA-DEN
2h 25mnonstop
$115Allegiant Air
Find Deal
Fri, Dec 13 - Mon, Dec 16
1:00 pm - 4:35 pmDEN-ORD
2h 35mnonstop
5:35 pm - 7:16 pmORD-DEN
2h 41mnonstop
$139American Airlines
Find Deal
Wed, Jan 22 - Sat, Jan 25
7:00 am - 10:45 amDEN-ORD
2h 45mnonstop
1:38 pm - 3:18 pmORD-DEN
2h 40mnonstop
$159American Airlines
Find Deal
Sat, Dec 14 - Wed, Dec 18
8:29 pm - 11:59 pmDEN-ORD
2h 30mnonstop
4:08 pm - 5:59 pmORD-DEN
2h 51mnonstop
$163United Airlines
Find Deal
Thu, Jan 9 - Sat, Jan 11
6:00 am - 9:31 amDEN-ORD
2h 31mnonstop
9:36 pm - 11:19 pmORD-DEN
2h 43mnonstop
$169United Airlines
Find Deal
Wed, Dec 11 - Sun, Dec 15
3:45 pm - 7:05 pmDEN-MDW
2h 20mnonstop
8:20 am - 10:05 amMDW-DEN
2h 45mnonstop
$170Southwest
Find Deal
Sat, Dec 14 - Wed, Dec 18
8:55 pm - 12:15 amDEN-MDW
2h 20mnonstop
10:40 pm - 12:20 amMDW-DEN
2h 40mnonstop
$188Southwest
Find Deal
Mon, Dec 30 - Thu, Jan 2

Frontier flights from Denver to Illinois

Our best Frontier deals on Denver to Illinois flight tickets
Frontier
Dec 13
DEN8:55 pmDenver Intl
2h 18m
MDW12:13 amChicago Midway
Dec 18
MDW10:27 pmChicago Midway
2h 53m
DEN12:20 amDenver Intl
Frontier
Dec 11
DEN8:55 pmDenver Intl
2h 18m
MDW12:13 amChicago Midway
Dec 12
MDW7:15 amChicago Midway
2h 50m
DEN9:05 amDenver Intl
Frontier
Dec 4
DEN5:05 amDenver Intl
2h 08m
STL8:13 amLambert-St Louis
Dec 11
STL6:46 pmLambert-St Louis
2h 36m
DEN8:22 pmDenver Intl

American Airlines flights from Denver to Illinois

Our best American Airlines deals on Denver to Illinois flight tickets
American Airlines
Jan 22
DEN1:00 pmDenver Intl
2h 35m
ORD4:35 pmChicago O'Hare Intl
Jan 25
ORD5:35 pmChicago O'Hare Intl
2h 41m
DEN7:16 pmDenver Intl
American Airlines
Dec 14
DEN7:00 amDenver Intl
2h 45m
ORD10:45 amChicago O'Hare Intl
Dec 18
ORD1:38 pmChicago O'Hare Intl
2h 40m
DEN3:18 pmDenver Intl
American Airlines
Dec 15
DEN7:00 amDenver Intl
2h 45m
ORD10:45 amChicago O'Hare Intl
Dec 17
ORD8:30 amChicago O'Hare Intl
2h 44m
DEN10:14 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 day to depart on your flight to Illinois?

The cheapest day to depart from Denver to Illinois is on a Wednesday when prices can be found for as low as $145. Flights from Denver to Illinois on a Sunday will generally be more expensive and average around $201. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

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.

Can stopping save me money on Denver to Illinois flights?

You could potentially save up to 89% on your flight if you consider stops on a Denver to Illinois flight.

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

$31

Fastest flight time

1h 58m

Direct flights

Every day

Airports in Illinois

4 airports
The best one-way flight to Illinois from Denver in the past 72 hours is $31. The best round-trip flight deal from Denver to Illinois found on momondo in the last 72 hours is $66.
The fastest flight from Denver to Illinois takes 1h 58m
Direct flights go from Denver to Illinois every day.
There are 4 airports near Illinois: Chicago O'Hare Intl (ORD), Chicago Midway (MDW), Greater Peoria (PIA), Lambert-St Louis (STL)

  • 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 $38Free CancellationRating
6.1
3,536 reviews
Search Frontier flights
Allegiant AirPriceFrom $84Free CancellationRating
7.3
850 reviews
Search Allegiant Air flights
American AirlinesPriceFrom $139Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $140Free CancellationRating
8.1
5,005 reviews
Search Southwest flights
United AirlinesPriceFrom $144Free CancellationRating
7.4
9,172 reviews
Search United Airlines flights
DeltaPriceFrom $189Free CancellationRating
8.0
8,755 reviews
Search Delta 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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Popular flights according to clicks in the last 7 days on momondo