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Cheap flights from Illinois to Colorado from $41

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Colorado departing on 2/16. 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 Illinois to Colorado

Cheap round-trip flights

These are some of the best round-trip flight deals from Illinois to Colorado 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 Illinois to Colorado.

Cheap last minute flights

Planning a quick getaway from Illinois to Colorado? 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 Colorado, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from Illinois to Colorado

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

All round-trip flight deals to Colorado

The cheapest plane tickets to Colorado found on KAYAK recently.
7:05 am - 8:59 amMDW-DEN
2h 54mnonstop
8:55 pm - 12:17 amDEN-MDW
2h 22mnonstop
$63Frontier
Find Deal
Wed, Feb 12 - Wed, Feb 19
7:09 pm - 8:37 pmSTL-DEN
2h 28mnonstop
6:00 am - 9:16 amDEN-STL
2h 16mnonstop
$63Frontier
Find Deal
Sat, Feb 8 - Sat, Feb 15
4:08 pm - 5:59 pmORD-DEN
2h 51mnonstop
5:55 pm - 9:25 pmDEN-ORD
2h 30mnonstop
$139United Airlines
Find Deal
Sat, Feb 8 - Tue, Feb 11
7:05 pm - 9:00 pmORD-DEN
2h 55mnonstop
7:55 am - 11:30 amDEN-ORD
2h 35mnonstop
$154Southwest
Find Deal
Sat, Mar 1 - Mon, Mar 3
9:15 pm - 11:00 pmMDW-DEN
2h 45mnonstop
6:05 am - 9:35 amDEN-MDW
2h 30mnonstop
$154Southwest
Find Deal
Sat, Mar 1 - Mon, Mar 3
5:35 pm - 7:16 pmORD-DEN
2h 41mnonstop
8:07 am - 11:45 amDEN-ORD
2h 38mnonstop
$159American Airlines
Find Deal
Sat, Feb 1 - Tue, Feb 4
12:45 pm - 2:36 pmORD-DEN
2h 51mnonstop
5:55 pm - 9:25 pmDEN-ORD
2h 30mnonstop
$164United Airlines
Find Deal
Mon, Feb 3 - Wed, Feb 5
8:42 am - 10:34 amORD-DEN
2h 52mnonstop
7:00 am - 10:43 amDEN-ORD
2h 43mnonstop
$168American Airlines
Find Deal
Tue, Feb 11 - Sun, Feb 16
10:10 am - 5:03 pmORD-DEN
7h 53m1 stop
6:15 am - 12:55 pmDEN-ORD
5h 40m1 stop
$217Delta
Find Deal
Mon, Feb 17 - Thu, Feb 20
1:26 pm - 8:25 pmMDW-DEN
7h 59m1 stop
6:05 am - 12:42 pmDEN-MDW
5h 37m1 stop
$217Delta
Find Deal
Tue, Feb 4 - Tue, Feb 11
6:50 am - 8:53 amORD-DEN
3h 03mnonstop
$41Frontier
Find Deal
Sun, Feb 16
3:31 pm - 5:35 pmORD-DEN
3h 04mnonstop
$42Frontier
Find Deal
Sat, May 3
4:08 pm - 5:59 pmORD-DEN
2h 51mnonstop
$70United Airlines
Find Deal
Tue, Feb 11
4:36 pm - 6:13 pmSTL-DEN
2h 37mnonstop
$79United Airlines
Find Deal
Tue, Feb 11
6:15 am - 8:00 amORD-DEN
2h 45mnonstop
$85Southwest
Find Deal
Thu, Feb 27
1:45 pm - 4:45 pmMDW-DEN
4h 00m1 stop
$87Southwest
Find Deal
Tue, Feb 18
5:35 pm - 7:16 pmORD-DEN
2h 41mnonstop
$99American Airlines
Find Deal
Wed, Feb 5
8:42 am - 10:34 amORD-DEN
2h 52mnonstop
$115American Airlines
Find Deal
Tue, Jan 28
11:08 am - 10:23 amMDW-DEN
24h 15m2 stops
$240Allegiant Air
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Sun, Apr 20
11:08 am - 10:23 amMDW-DEN
24h 15m2 stops
$241Allegiant Air
Find Deal
Sun, Apr 13
6:46 pm - 8:22 pmSTL-DEN
2h 36mnonstop
6:00 am - 9:16 amDEN-STL
2h 16mnonstop
$151Frontier
Find Deal
Mon, Jan 13 - Fri, Jan 17
6:46 pm - 8:22 pmSTL-DEN
2h 36mnonstop
6:00 am - 9:16 amDEN-STL
2h 16mnonstop
$166Frontier
Find Deal
Mon, Jan 13 - Mon, Jan 20
6:15 am - 8:00 amORD-DEN
2h 45mnonstop
7:05 am - 10:45 amDEN-ORD
2h 40mnonstop
$247Southwest
Find Deal
Tue, Jan 14 - Tue, Jan 21
4:08 pm - 5:59 pmORD-DEN
2h 51mnonstop
6:00 am - 9:38 amDEN-ORD
2h 38mnonstop
$317United Airlines
Find Deal
Tue, Jan 14 - Mon, Jan 20
8:35 am - 8:45 pmORD-DEN
13h 10m1 stop
7:05 am - 7:59 pmDEN-ORD
11h 54m1 stop
$323Delta
Find Deal
Tue, Jan 14 - Wed, Jan 22
5:45 am - 11:33 amORD-DEN
6h 48m1 stop
6:00 am - 9:38 amDEN-ORD
2h 38mnonstop
$327United Airlines
Find Deal
Tue, Jan 14 - Mon, Jan 20
5:45 am - 12:48 pmORD-DEN
8h 03m1 stop
6:15 am - 12:55 pmDEN-ORD
5h 40m1 stop
$337Delta
Find Deal
Tue, Jan 14 - Thu, Jan 16
3:10 pm - 9:35 pmORD-DEN
7h 25m2 stops
6:25 am - 4:45 pmDEN-ORD
9h 20m1 stop
$358Southwest
Find Deal
Tue, Jan 14 - Tue, Jan 21
9:43 am - 12:04 pmORD-ASE
3h 21mnonstop
3:12 pm - 7:09 pmASE-ORD
2h 57mnonstop
$494American Airlines
Find Deal
Sat, Jan 11 - Thu, Jan 16
6:00 am - 11:57 amORD-ASE
6h 57m1 stop
12:27 pm - 4:27 pmASE-ORD
3h 00mnonstop
$504American Airlines
Find Deal
Sat, Jan 11 - Thu, Jan 16
7:05 am - 8:59 amMDW-DEN
2h 54mnonstop
8:55 pm - 12:17 amDEN-MDW
2h 22mnonstop
$63Frontier
Find Deal
Wed, Feb 12 - Wed, Feb 19
7:09 pm - 8:37 pmSTL-DEN
2h 28mnonstop
6:00 am - 9:16 amDEN-STL
2h 16mnonstop
$63Frontier
Find Deal
Sat, Feb 8 - Sat, Feb 15
6:50 am - 8:53 amORD-DEN
3h 03mnonstop
1:52 pm - 5:25 pmDEN-ORD
2h 33mnonstop
$66Frontier
Find Deal
Wed, Feb 26 - Sat, Mar 1
7:50 am - 9:40 amORD-DEN
2h 50mnonstop
7:00 pm - 10:37 pmDEN-ORD
2h 37mnonstop
$67Frontier
Find Deal
Mon, Feb 10 - Tue, Feb 11
4:08 pm - 5:59 pmORD-DEN
2h 51mnonstop
5:55 pm - 9:25 pmDEN-ORD
2h 30mnonstop
$139United Airlines
Find Deal
Sat, Feb 8 - Tue, Feb 11
8:42 am - 10:34 amORD-DEN
2h 52mnonstop
8:07 am - 11:45 amDEN-ORD
2h 38mnonstop
$149American Airlines
Find Deal
Tue, Feb 4 - Tue, Feb 11
6:30 am - 8:15 amORD-DEN
2h 45mnonstop
7:55 am - 11:30 amDEN-ORD
2h 35mnonstop
$154Southwest
Find Deal
Sat, Mar 1 - Mon, Mar 3
9:15 pm - 11:00 pmMDW-DEN
2h 45mnonstop
6:05 am - 9:35 amDEN-MDW
2h 30mnonstop
$154Southwest
Find Deal
Sat, Mar 1 - Mon, Mar 3
5:35 pm - 7:16 pmORD-DEN
2h 41mnonstop
8:07 am - 11:45 amDEN-ORD
2h 38mnonstop
$159American Airlines
Find Deal
Sat, Feb 1 - Tue, Feb 4
12:45 pm - 2:36 pmORD-DEN
2h 51mnonstop
5:55 pm - 9:25 pmDEN-ORD
2h 30mnonstop
$164United Airlines
Find Deal
Mon, Feb 3 - Wed, Feb 5

American Airlines flights from Illinois to Colorado

Our best American Airlines deals on Illinois to Colorado flight tickets
American Airlines
Feb 1
ORD5:35 pmChicago O'Hare Intl
2h 41m
DEN7:16 pmDenver Intl
Feb 4
DEN8:07 amDenver Intl
2h 38m
ORD11:45 amChicago O'Hare Intl
American Airlines
Feb 11
ORD8:42 amChicago O'Hare Intl
2h 52m
DEN10:34 amDenver Intl
Feb 16
DEN7:00 amDenver Intl
2h 43m
ORD10:43 amChicago O'Hare Intl
American Airlines
Apr 23
ORD2:45 pmChicago O'Hare Intl
2h 45m
DEN4:30 pmDenver Intl
Apr 27
DEN7:20 amDenver Intl
2h 29m
ORD10:49 amChicago O'Hare Intl

Frontier flights from Illinois to Colorado

Our best Frontier deals on Illinois to Colorado flight tickets
Frontier
Feb 8
STL7:09 pmLambert-St Louis
2h 28m
DEN8:37 pmDenver Intl
Feb 15
DEN6:00 amDenver Intl
2h 16m
STL9:16 amLambert-St Louis
Frontier
Feb 26
ORD6:50 amChicago O'Hare Intl
3h 03m
DEN8:53 amDenver Intl
Mar 1
DEN1:52 pmDenver Intl
2h 33m
ORD5:25 pmChicago O'Hare Intl
Frontier
Jan 22
MDW8:15 amChicago Midway
2h 53m
DEN10:08 amDenver Intl
Feb 4
DEN8:55 pmDenver Intl
2h 22m
MDW12:17 amChicago Midway

See travel insights to Colorado from

How to get the cheapest flight ticket from Illinois to Colorado

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 Colorado?

The month of May is, on average, the cheapest month to fly to Colorado from Illinois, with most prices found around $138. The month of April is another great option to travel to Colorado, with average flight prices from Illinois averaging around $143.

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

The cheapest day to depart from Illinois to Colorado is on a Tuesday when prices can be found for as low as $198. On the other hand, Sunday is the most expensive day to depart from Illinois because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $258.

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

The cheapest time of day to fly to Colorado is in the afternoon when flights can be purchased for as low as $123. At noon is when there is more demand to fly to Colorado, so prices are often more expensive at around $287 per ticket.

What is the cheapest Illinois to Colorado flight route?

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

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

The best time to book a flight to Colorado from Illinois is 28 days out, which is when prices tend to be around $213. Keep in mind that you might also find cheap flights to Colorado outside of this time window. In fact, momondo users recently found flights from Illinois to Colorado for $139.

What cabin class options are available on Illinois to Colorado flights?

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

Cheap Illinois to Colorado flight deals and tips

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

Best Price Found

$41

Fastest flight time

2h 20m

Direct flights

Every day

Airports in Colorado

3 airports
The best one-way flight to Colorado from Illinois in the past 72 hours is $41. The best round-trip flight deal from Illinois to Colorado found on momondo in the last 72 hours is $63.
The fastest flight from Illinois to Colorado takes 2h 20m
Direct flights go from Illinois to Colorado every day.
There are 3 airports near Colorado: Vail Eagle County (EGE), Colorado Springs (COS), Denver Intl (DEN)

  • When did momondo last update prices for flights from Illinois to Colorado?

    Prices for flights from Illinois to Colorado were last updated today.

  • How many operators does momondo search for flights from Illinois to Colorado?

  • How old do you have to be to fly from Illinois to Colorado?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Colorado.

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

    The travel and health documents you'll need for your trip to Colorado 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 Colorado. 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 Illinois to Colorado?


Best airlines flying from Illinois to Colorado

Compare and see reviews for airlines that fly from Illinois to Colorado with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $40Free CancellationRating
6.0
3,428 reviews
Search Frontier flights
Allegiant AirPriceFrom $91Free CancellationRating
7.3
799 reviews
Search Allegiant Air flights
American AirlinesPriceFrom $139Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $152Free CancellationRating
7.4
8,942 reviews
Search United Airlines flights
SouthwestPriceFrom $157Free CancellationRating
8.1
4,650 reviews
Search Southwest flights
DeltaPriceFrom $185Free CancellationRating
8.0
8,501 reviews
Search Delta flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Illinois to Colorado. momondo saves you time and could save you money on your trip.

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

Yes. momondo enables you to select and highlight flights to Colorado from Illinois with this policy.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Illinois to Colorado.

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

Yes momondo offers price alerts on flights to Colorado from Illinois. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.


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