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Aspen

$141+ Cheap flights from Illinois to Aspen (ASE)

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 10/12. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — ASE
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from Illinois to Aspen

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

Round-trip from

$229
(United Airlines)

One-way from

$151
(American Airlines)

Popular in

November

Cheapest in

January

Average price

$496

Good round-trip deal

$420 or less

Good one-way deal

$195 or less
From Illinois to Aspen Pitkin County
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One-way flight from Illinois to Aspen Pitkin County
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Highest demand for flights based on searches. 14% potential increase in price ($89 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($30 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from Illinois to Aspen Pitkin County.
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Price to beat on a one-way flight from Illinois to Aspen Pitkin County.
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Find flight deals from Illinois to Aspen

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

This United Airlines deal was found by Cheapflights users on 6/11. 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 7/25:15 amSTL - ASE
1 stop4h 27mUnited Airlines
Sat 7/128:50 amASE - STL
1 stop6h 41mUnited Airlines
Deal found 6/11$229
This United Airlines deal was found by Cheapflights users on 6/10. 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.
Tue 7/225:00 amORD - ASE
1 stop4h 42mUnited Airlines
Tue 7/296:15 pmASE - ORD
1 stop5h 15mUnited Airlines
Deal found 6/10$249
This American Airlines deal was found by Cheapflights users on 6/11. 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.
Mon 8/189:40 amORD - ASE
Nonstop3h 06mAmerican Airlines
Wed 8/2012:03 pmASE - ORD
Nonstop2h 58mAmerican Airlines
Deal found 6/11$317
This American Airlines deal was found by Cheapflights users on 6/11. 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.
Mon 9/157:59 pmSTL - ASE
1 stop16h 42mAmerican Airlines
Fri 9/1912:16 pmASE - STL
1 stop5h 11mAmerican Airlines
Deal found 6/11$337
This Delta deal was found by Cheapflights users on 6/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/65:35 amORD - ASE
1 stop6h 47mDelta
Thu 7/108:05 amASE - ORD
2 stops11h 19mDelta
Deal found 6/10$604
This Delta deal was found by Cheapflights users on 6/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/286:00 amMDW - ASE
1 stop6h 21mDelta
Sat 8/307:16 amASE - MDW
1 stop7h 12mDelta
Deal found 6/10$709

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

Fly from

Illinois

Fly to

Aspen

Route

Depart

Return

Price

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Wed 7/2

5:15 am-8:42 am

1 stop4h 27m

Aspen Pitkin County

Sat 7/12

8:50 am-4:31 pm

1 stop6h 41m

$229

ChicagoAspen

ORD - ASE

ORDASE

Chicago O'Hare Intl

Tue 7/22

5:00 am-8:42 am

1 stop4h 42m

Aspen Pitkin County

Tue 7/29

6:15 pm-12:30 am

1 stop5h 15m

$249

ChicagoAspen

ORD - ASE

ORDASE

Chicago O'Hare Intl

Mon 8/18

9:40 am-11:46 am

Nonstop3h 06m

Aspen Pitkin County

Wed 8/20

12:03 pm-4:01 pm

Nonstop2h 58m

$317

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Thu 8/14

6:00 am-11:46 am

1 stop6h 46m

Aspen Pitkin County

Mon 8/18

4:53 pm-11:14 pm

1 stop5h 21m

$430

ChicagoAspen

ORD - ASE

ORDASE

Chicago O'Hare Intl

Sun 7/6

5:35 am-11:22 am

1 stop6h 47m

Aspen Pitkin County

Thu 7/10

8:05 am-8:24 pm

2 stops11h 19m

$604

ChicagoAspen

MDW - ASE

MDWASE

Chicago Midway

Thu 8/28

6:00 am-11:21 am

1 stop6h 21m

Aspen Pitkin County

Sat 8/30

7:16 am-3:28 pm

1 stop7h 12m

$709

ChicagoAspen

ORD - ASE

ORDASE

Chicago O'Hare Intl

Sun 10/12

6:00 am-11:39 am

1 stop6h 39m

$141

ChicagoAspen

ORD - ASE

ORDASE

Chicago O'Hare Intl

Tue 7/29

1:23 pm-6:04 pm

1 stop5h 41m

$151

ChicagoAspen

ORD - ASE

ORDASE

Chicago O'Hare Intl

Tue 7/29

7:35 pm-9:44 pm

Nonstop3h 09m

$181

ChicagoAspen

MDW - ASE

MDWASE

Chicago Midway

Tue 7/29

6:00 am-11:21 am

1 stop6h 21m

$230

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/9

Showing 1-10 of 12 results
1
2

Best time to book a flight from Illinois to Aspen

Have a flexible travel schedule? Discover the best time to fly to Aspen from Illinois 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 Illinois to Aspen

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

Currently, November is the cheapest month in which you can book a flight from Illinois to Aspen (average of $448). Flying from Illinois to Aspen in December is currently the most expensive (average of $670). 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 IL to ASE?

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

When flying from Illinois to Aspen, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Illinois to Aspen

Explore weekly flight availability from Illinois to Aspen. 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 June 12, 2025.

The most flights from USIL to ASE are scheduled on a Monday (3 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (2 on average).

Rainfall in Aspen by month

Plan your trip to Aspen by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Aspen ranges from 1.0 - 1.8 inches per month. April is typically the wettest month, when rainfall can reach 1.8 in. January is typically the driest time to visit Aspen when rainfall is around 1.0 in.

Temperature in Aspen by month

Plan your trip to Aspen by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Aspen, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 64.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 19.4 F).

Reviews of airlines servicing Aspen

Get insights into the airlines that provide service to Aspen. 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 Aspen. Reviews last updated June 12, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Delta and United Airlines from Illinois to Aspen to help guide your decision. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Aspen. 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 into for flights to Aspen from Illinois?

    Most people fly into Aspen Pitkin County (ASE) if they book a flight to Aspen from Illinois. Pitkin County is conveniently located just 3.5 mi from Aspen’s city center.

  • What are the cheapest airlines to fly from Illinois to Aspen one-way?

    To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at $151. United Airlines flights start at $181 while deals on Delta start at $230 one-way.

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

    Most travelers choose Chicago O'Hare Intl - Aspen Pitkin County, Chicago Midway - Aspen Pitkin County or Lambert-St Louis - Aspen Pitkin County when deciding on the best route from Illinois to Aspen.

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

    The top 3 most reliable airlines when flying from Illinois to Aspen are United Airlines (74%), Lufthansa (65%) and SkyWest Airlines (53%).

  • What are the cheapest flights from Illinois to Aspen?

    Looking at all options, your cheapest flight can be booked for $140. While the most popular route (Chicago O'Hare Intl - Aspen Pitkin County) can be booked for $249 on average our data indicates $377 when flying from Illinois to Aspen.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Illinois to Aspen 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 Illinois to Aspen?

    Currently, November is the cheapest month in which you can book a flight from Illinois to Aspen (average of $448). Flying from Illinois to Aspen in December is currently the most expensive (average of $670). 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

Traveling to a place near Illinois?

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

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Top 2 airlines flying from Illinois to Aspen

Discover the top 2 airlines that operate flights from Illinois to Aspen. 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$277Average$481FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$315Average$554FlexibilityNo cancel feeOn-time69%

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