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$211+ Cheap flights from Aspen (ASE) to Illinois

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/10. Fares are subject to change and may not be available on all flights or dates of travel.
ASE — ORD
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap flight deals from Aspen to Illinois

Cheapest flights from Aspen to Illinois
Explore the most affordable flight options available from Aspen to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

This Delta deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/171:20 pmASE - STL
1 stop7h 37mDelta
Tue 12/236:00 amSTL - ASE
1 stop6h 39mDelta
Deal found 12/11$399
This United Airlines deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1712:40 pmASE - STL
1 stop8h 00mUnited Airlines
Tue 12/236:30 amSTL - ASE
2 stops13h 17mUnited Airlines
Deal found 12/11$474
This United Airlines deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/106:30 pmASE - ORD
1 stop4h 29mUnited Airlines
Thu 1/157:00 amORD - ASE
1 stop5h 04mUnited Airlines
Deal found 12/10$480
This American Airlines deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/262:47 pmASE - STL
1 stop7h 09mAmerican Airlines
Tue 12/307:00 amSTL - ASE
1 stop8h 23mAmerican Airlines
Deal found 12/11$488
This United Airlines deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/261:30 pmASE - STL
1 stop7h 25mUnited Airlines
Tue 12/306:30 amSTL - ASE
2 stops13h 17mUnited Airlines
Deal found 12/11$515
This United Airlines deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/188:00 amASE - ORD
Nonstop3h 11mUnited Airlines
Sun 12/2112:50 pmORD - ASE
1 stop6h 57mUnited Airlines
Deal found 12/10$516
This United Airlines deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/129:00 amASE - ORD
Nonstop3h 12mUnited Airlines
Fri 12/123:49 pmORD - ASE
2 stops18h 12mUnited Airlines
Deal found 12/11$549
This American Airlines deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/182:53 pmASE - ORD
Nonstop3h 20mAmerican Airlines
Sun 12/2111:46 amORD - ASE
Nonstop3h 30mAmerican Airlines
Deal found 12/10$631
This United Airlines deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/109:00 amASE - ORD
Nonstop3h 12mUnited Airlines
Fri 12/121:51 pmORD - ASE
1 stop5h 30mUnited Airlines
Deal found 12/10$646
This United Airlines deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/254:15 pmASE - ORD
Nonstop3h 05mUnited Airlines
Sun 12/288:45 amORD - ASE
Nonstop3h 37mUnited Airlines
Deal found 12/10$659

Find flight deals from Aspen to Illinois

Keep the following information in mind while searching for Aspen to Illinois flight deals. Data was last updated December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$299
(United Airlines)

One-way from

$211
(American Airlines)

Popular in

May

Cheapest in

April

Average price

$530

Good round-trip deal

$403 or less

Good one-way deal

$286 or less
Provider with most accurate pricing for Aspen Pitkin County-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Aspen Pitkin County-Chicago (CHI) flights.
Search Deals
From Aspen Pitkin County to Illinois
Search Deals
One-way flight from Aspen Pitkin County to Illinois
Search Deals
High demand for flights, 1% potential price rise
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Aspen Pitkin County to Illinois.
Search Deals
Price to beat on a one-way flight from Aspen Pitkin County to Illinois.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Aspen to Illinois 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, Cheapflights users made 2,558,603 searches. Data last updated December 12, 2025.
Use the filters below to find and compare flights from Aspen to Illinois that are best for you.

Fly from

Aspen

Fly to

Illinois

Route

Depart

Return

Price

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

Thu 1/15

10:35 am-4:55 pm

1 stop5h 20m

Lambert-St Louis

Sun 1/18

6:00 pm-9:59 pm

1 stop4h 59m

$299

AspenChicago

ASE - ORD

ASEORD

Aspen Pitkin County

Wed 1/7

12:54 pm-4:55 pm

Nonstop3h 01m

Chicago O'Hare Intl

Fri 1/9

11:40 am-2:18 pm

Nonstop3h 38m

$366

AspenChicago

ASE - ORD

ASEORD

Aspen Pitkin County

Wed 1/7

12:36 pm-7:51 pm

1 stop6h 15m

Chicago O'Hare Intl

Fri 1/9

3:55 pm-6:25 pm

Nonstop3h 30m

$376

AspenChicago

ASE - ORD

ASEORD

Aspen Pitkin County

Wed 1/7

3:04 pm-11:59 pm

1 stop7h 55m

Chicago O'Hare Intl

Fri 1/9

5:30 am-2:16 pm

1 stop9h 46m

$386

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

Wed 12/17

1:20 pm-9:57 pm

1 stop7h 37m

Lambert-St Louis

Tue 12/23

6:00 am-11:39 am

1 stop6h 39m

$399

AspenChicago

ASE - ORD

ASEORD

Aspen Pitkin County

Sat 2/14

4:04 pm-8:04 pm

Nonstop3h 00m

Chicago O'Hare Intl

Wed 2/18

9:00 am-11:41 am

Nonstop3h 41m

$469

AspenChicago

ASE - ORD

ASEORD

Aspen Pitkin County

Thu 1/8

12:54 pm-4:55 pm

Nonstop3h 01m

Chicago O'Hare Intl

Thu 1/15

5:05 am-10:22 am

1 stop6h 17m

$471

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

Wed 12/17

12:40 pm-9:40 pm

1 stop8h 00m

Lambert-St Louis

Tue 12/23

6:30 am-6:47 pm

2 stops13h 17m

$474

AspenChicago

ASE - ORD

ASEORD

Aspen Pitkin County

Thu 1/8

7:15 am-2:40 pm

1 stop6h 25m

Chicago O'Hare Intl

Thu 1/15

7:00 am-11:04 am

1 stop5h 04m

$480

AspenSt. Louis

ASE - STL

ASESTL

Aspen Pitkin County

Fri 12/26

2:47 pm-10:56 pm

1 stop7h 09m

Lambert-St Louis

Tue 12/30

7:00 am-2:23 pm

1 stop8h 23m

$488

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Showing 1-10 of 29 results
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Best time to book a flight from Aspen to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Aspen with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Aspen to Illinois

What is the cheapest month to book a flight from Aspen to Illinois?

Currently, August is the cheapest month in which you can book a flight from Aspen to Illinois (average of $183). Flying from Aspen to Illinois in April is currently the most expensive (average of $361). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ASE to IL?

Find hourly flight availability from Aspen to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 12, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 62% on flights from Aspen to Illinois by exploring options for tickets in the evening.

Weekly flight availability from Aspen to Illinois

Explore weekly flight availability from Aspen to Illinois. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated December 12, 2025.

The most flights from ASE to USIL are scheduled on a Monday (3 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (3 on average).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated December 12, 2025.
Peruse reviews from past customers who have flown with United Airlines and American Airlines from Aspen to Illinois to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,095 reviews

Boarding

7.7

Food

6.6

Entertainment

7.1

Crew

8.1

Comfort

7.3

Overall

7.4

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
United Airlines
7.4
Good
9,095 reviews
United Airlines
7.4
Good
9,095 reviews

Boarding

7.7

Food

6.6

Entertainment

7.1

Crew

8.1

Comfort

7.3

Overall

7.4

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
American Airlines
7.2
Good
11,050 reviews
United Airlines
7.4
Good
9,095 reviews

Boarding

7.7

Food

6.6

Entertainment

7.1

Crew

8.1

Comfort

7.3

Overall

7.4

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

Related info for your journey

Find useful and relevant information for your journey from Aspen to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Aspen to Illinois?

    Aspen Pitkin County (ASE), located 3.5 mi from the city center, is the airport you fly out of when you book flights from Aspen to Illinois.

  • How long is the flight from Aspen to Illinois?

    Departing from Aspen to Illinois will take you 3h 01m. The distance between Aspen and Illinois is about 1010 mi. This flight may include one or multiple stops.

  • What are the most popular routes from Aspen to Illinois?

    While some choose either Aspen Pitkin County - Lambert-St Louis or Aspen Pitkin County - Chicago Midway, Aspen Pitkin County - Chicago O'Hare Intl is the most popular route from Aspen to Illinois.

  • What are the most reliable airlines from Aspen to Illinois?

    No one likes to see their flight delayed. When booking a flight from Aspen to Illinois consider choosing United Airlines (82%), SkyWest Airlines (74%) or Lufthansa (72%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Aspen to Illinois?

    While on average a flight from Aspen to Illinois is generally $1,005, our data shows the cheapest flight currently is $210. When looking at the most popular route, (Aspen Pitkin County - Chicago O'Hare Intl), you can expect to pay $360 for that flight.

  • Can I find deals for flights from Aspen to Illinois that include hotel bookings?

    Yes. In addition to deals on Aspen to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Aspen to Illinois?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Aspen to Illinois.

  • Can I find deals for business class flights from Aspen to Illinois?

    Yes. Cheapflights offers flight deals from Aspen to Illinois by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Aspen to Illinois?

    Currently, August is the cheapest month in which you can book a flight from Aspen to Illinois (average of $183). Flying from Aspen to Illinois in April is currently the most expensive (average of $361). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 2 airlines flying from Aspen to Illinois

Discover the top 2 airlines that operate flights from Aspen to Illinois. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$172Average$404FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$289Average$406FlexibilityNo cancel feeOn-time69%

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