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Cheap flights from Illinois to Aspen from $211

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 Aspen departing on 1/16. 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 Aspen

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
2:45 pm - 6:42 pmSTL-ASE
4h 57m1 stop
United Airlines Logo
5:00 pm - 10:22 pmASE-STL
4h 22m1 stop
$269United Airlines
Find Deal
Wed, Dec 24 - Sun, Dec 28
United Airlines Logo
9:18 am - 11:55 amORD-ASE
3h 37mnonstop
United Airlines Logo
7:45 am - 11:56 amASE-ORD
3h 11mnonstop
$311United Airlines
Find Deal
Mon, Jan 12 - Fri, Jan 16
American Airlines Logo
11:40 am - 2:18 pmORD-ASE
3h 38mnonstop
American Airlines Logo
1:09 pm - 10:18 pmASE-ORD
8h 09m1 stop
$321American Airlines
Find Deal
Sun, Feb 1 - Fri, Feb 6
American Airlines Logo
5:16 am - 10:05 amSTL-ASE
5h 49m1 stop
American Airlines Logo
2:53 pm - 11:44 pmASE-STL
7h 51m1 stop
$323American Airlines
Find Deal
Tue, Dec 23 - Sun, Dec 28
American Airlines Logo
7:10 am - 9:51 amORD-ASE
3h 41mnonstop
American Airlines Logo
1:10 pm - 5:25 pmASE-ORD
3h 15mnonstop
$330American Airlines
Find Deal
Wed, Dec 24 - Wed, Dec 31
Delta Logo
5:33 am - 2:16 pmORD-ASE
9h 43m1 stop
Delta Logo
3:04 pm - 11:57 pmASE-ORD
7h 53m1 stop
$331Delta
Find Deal
Mon, Jan 12 - Fri, Jan 16
American Airlines Logo
5:21 am - 10:49 amORD-ASE
6h 28m1 stop
American Airlines Logo
1:10 pm - 5:25 pmASE-ORD
3h 15mnonstop
$340American Airlines
Find Deal
Wed, Dec 24 - Wed, Dec 31
United Airlines Logo
7:10 am - 10:38 amORD-ASE
4h 28m1 stop
United Airlines Logo
4:15 pm - 8:20 pmASE-ORD
3h 05mnonstop
$365United Airlines
Find Deal
Wed, Dec 17 - Fri, Dec 26
Delta Logo
6:45 am - 2:16 pmMDW-ASE
8h 31m1 stop
Delta Logo
1:33 pm - 10:09 pmASE-MDW
7h 36m1 stop
$369Delta
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Fri, Jan 9 - Tue, Jan 13
Delta Logo
6:00 am - 11:43 amMDW-ASE
6h 43m1 stop
Delta Logo
2:56 pm - 10:44 pmASE-MDW
6h 48m1 stop
$386Delta
Find Deal
Mon, Feb 9 - Fri, Feb 13

United Airlines flights from Illinois to Aspen

Our best United Airlines deals on Illinois to Aspen flight tickets
United Airlines
Dec 24
STL2:45 pmLambert-St Louis
4h 57m
1 stop
ASE6:42 pmAspen Pitkin County
Dec 28
ASE5:00 pmAspen Pitkin County
4h 22m
1 stop
STL10:22 pmLambert-St Louis
$269
Find similar
United Airlines
Jan 12
ORD9:18 amChicago O'Hare Intl
3h 37m
ASE11:55 amAspen Pitkin County
Jan 16
ASE7:45 amAspen Pitkin County
3h 11m
ORD11:56 amChicago O'Hare Intl
$311
Find similar
United Airlines
Dec 17
ORD7:10 amChicago O'Hare Intl
4h 28m
1 stop
ASE10:38 amAspen Pitkin County
Dec 26
ASE4:15 pmAspen Pitkin County
3h 05m
ORD8:20 pmChicago O'Hare Intl
$365
Find similar

American Airlines flights from Illinois to Aspen

Our best American Airlines deals on Illinois to Aspen flight tickets
American Airlines
Feb 1
ORD11:40 amChicago O'Hare Intl
3h 38m
ASE2:18 pmAspen Pitkin County
Feb 6
ASE1:09 pmAspen Pitkin County
8h 09m
1 stop
ORD10:18 pmChicago O'Hare Intl
$321
Find similar
American Airlines
Dec 23
STL5:16 amLambert-St Louis
5h 49m
1 stop
ASE10:05 amAspen Pitkin County
Dec 28
ASE2:53 pmAspen Pitkin County
7h 51m
1 stop
STL11:44 pmLambert-St Louis
$323
Find similar
American Airlines
Dec 24
ORD7:10 amChicago O'Hare Intl
3h 41m
ASE9:51 amAspen Pitkin County
Dec 31
ASE1:10 pmAspen Pitkin County
3h 15m
ORD5:25 pmChicago O'Hare Intl
$330
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Illinois to Aspen that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated November 10, 2025.
Use the filters below to find and compare flights from Illinois to Aspen that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Wed 12/24

2:45 pm-6:42 pm

1 stop4h 57m

Aspen Pitkin County

Sun 12/28

5:00 pm-10:22 pm

1 stop4h 22m

$269

ChicagoAspen

ORD - ASE

ORDASE

Chicago O'Hare Intl

Mon 1/12

9:18 am-11:55 am

Nonstop3h 37m

Aspen Pitkin County

Fri 1/16

7:45 am-11:56 am

Nonstop3h 11m

$311

ChicagoAspen

ORD - ASE

ORDASE

Chicago O'Hare Intl

Sun 2/1

11:40 am-2:18 pm

Nonstop3h 38m

Aspen Pitkin County

Fri 2/6

1:09 pm-10:18 pm

1 stop8h 09m

$321

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Tue 12/23

5:16 am-10:05 am

1 stop5h 49m

Aspen Pitkin County

Sun 12/28

2:53 pm-11:44 pm

1 stop7h 51m

$323

ChicagoAspen

ORD - ASE

ORDASE

Chicago O'Hare Intl

Wed 12/24

7:10 am-9:51 am

Nonstop3h 41m

Aspen Pitkin County

Wed 12/31

1:10 pm-5:25 pm

Nonstop3h 15m

$330

ChicagoAspen

ORD - ASE

ORDASE

Chicago O'Hare Intl

Mon 1/12

5:33 am-2:16 pm

1 stop9h 43m

Aspen Pitkin County

Fri 1/16

3:04 pm-11:57 pm

1 stop7h 53m

$331

ChicagoAspen

ORD - ASE

ORDASE

Chicago O'Hare Intl

Wed 12/24

5:21 am-10:49 am

1 stop6h 28m

Aspen Pitkin County

Wed 12/31

1:10 pm-5:25 pm

Nonstop3h 15m

$340

ChicagoAspen

ORD - ASE

ORDASE

Chicago O'Hare Intl

Wed 12/17

7:10 am-10:38 am

1 stop4h 28m

Aspen Pitkin County

Fri 12/26

4:15 pm-8:20 pm

Nonstop3h 05m

$365

ChicagoAspen

MDW - ASE

MDWASE

Chicago Midway

Fri 1/9

6:45 am-2:16 pm

1 stop8h 31m

Aspen Pitkin County

Tue 1/13

1:33 pm-10:09 pm

1 stop7h 36m

$369

ChicagoAspen

MDW - ASE

MDWASE

Chicago Midway

Mon 2/9

6:00 am-11:43 am

1 stop6h 43m

Aspen Pitkin County

Fri 2/13

2:56 pm-10:44 pm

1 stop6h 48m

$386

Flights are sorted by cheapest round-trip flights first.

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See travel insights to Aspen from

How to get the cheapest flight ticket from Illinois to Aspen

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 Aspen?

The month of September is, on average, the cheapest month to fly to Aspen from Illinois, with most prices found around $382. If you aren’t able to travel to Aspen during the month of September, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $448.

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

The cheapest day to depart from Illinois to Aspen is on a Tuesday when prices can be found for as low as $384. The most expensive day to fly to Aspen is Thursday, with ticket prices averaging around $636.

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

In the morning is the cheapest time of day to fly from Illinois to Aspen when you can find flight prices for as low as $512. Flying to Aspen in the morning is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the afternoon because they tend to be around $594. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Illinois to Aspen Pitkin County flight route?

Fly from Chicago O'Hare Intl to Aspen Pitkin County for the best Illinois - Aspen Pitkin County flight prices

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

You are more likely to see cheaper flights to Aspen from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Aspen for around $502 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Aspen from Illinois for as low as $399 on momondo.

What cabin class options are available on Illinois to Aspen Pitkin County flights?

There are 4 cabin classes available to choose from on Illinois to Aspen Pitkin County 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 Illinois to Aspen flights?

You could potentially save up to 23% on your flight if you consider stops on a Illinois to Aspen flight.

Cheap Illinois to Aspen flight deals and tips

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

Best Price Found

$310

Fastest flight time

3h 14m

Direct flights

Every day

Airports in Aspen

1 airport
The best one-way flight to Aspen from Illinois in the past 72 hours is $310. The best round-trip flight deal from Illinois to Aspen found on momondo in the last 72 hours is $421.
The fastest flight from Illinois to Aspen takes 3h 14m
Direct flights go from Illinois to Aspen every day.
There is 1 airport near Aspen: Aspen Pitkin County (ASE)
Search flight deals

  • When did momondo last update prices for flights from Illinois to Aspen Pitkin County Airport?

    Prices for flights from Illinois to Aspen Pitkin County Airport refresh daily.

  • How many operators does momondo search for flights from Illinois to Aspen Pitkin County Airport?

  • How old do you have to be to fly from Illinois to Aspen Pitkin County Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Illinois to Aspen Pitkin County Airport.

  • What documentation or ID do you need to fly to Aspen Pitkin County Airport?

    The required travel and health documents for your Aspen Pitkin County Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Aspen Pitkin County Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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

Best airlines flying from Illinois to Aspen

Compare and see reviews for airlines that fly from Illinois to Aspen with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $239Free CancellationRating
7.2
11,045 reviews
Search American Airlines flights
United AirlinesPriceFrom $299Free CancellationRating
7.4
9,012 reviews
Search United Airlines flights

Traveling to a place near Aspen?

Book flights to Aspen if you plan to visit one of these locations
Snowmass Village
Leadville
Snowmass
Carbondale
Buena Vista

Why use momondo?

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

Finding the right flight to Aspen from Illinois is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Aspen quick and easy, saving you time and money.

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

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

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

momondo helps you find the best flight between Illinois and Aspen by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Price alerts on flights to Aspen from Illinois are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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