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 $145. Delta flights start at $155 while deals on United Airlines start at $195 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 cheapest flights from Illinois to Aspen?

Looking at all options, your cheapest flight can be booked for $239. While the most popular route (Chicago O'Hare Intl - Aspen Pitkin County) can be booked for $239 on average our data indicates $630 when flying 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 (60%), Lufthansa (52%) and SkyWest Airlines (46%).

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

To save up to 50% on this flight, we recommend booking at least 34 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Illinois to Aspen from $469 1-2 weeks out and tickets from $479 for flights departing within the next 72 hours.

What is the cheapest month to fly from Illinois to Aspen?

January can be a great time to fly to Aspen from Illinois with a flight ticket averaging about $554. Cheapflights users have found deals in the month of January for as cheap as $271. The most expensive prices can be found in the month of November.

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.

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.

$145+ Flights from Illinois to Aspen

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Cheap flight deals from Illinois to Aspen

Most accurate provider	FlightHub 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$239 (American Airlines)
One-way from	$145 (American Airlines)
Popular in	November
Cheapest in	January
Average price	$649
Good round-trip deal	$379 or less
Good one-way deal	$454 or less

Provider with most accurate pricing for Chicago (CHI)-Aspen Pitkin County flight deals.

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Provider most trusted by Cheapflights users for Chicago (CHI)-Aspen Pitkin County flights.

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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. 13% potential increase in price ($88 potential increase over avg. RT price).

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Cheapest flight prices on average. 5% potential price decrease ($29 potential savings vs. average RT price).

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Average for round-trip flights in April 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 April 24, 2025.

Tue 6/1010:51 amORD - ASE

Nonstop3h 13mAmerican Airlines

Fri 6/1312:08 pmASE - ORD

Nonstop2h 51mAmerican Airlines

Deal found 4/22

$239

Tue 6/107:35 pmORD - ASE

Nonstop3h 09mUnited Airlines

Fri 6/133:30 pmASE - ORD

1 stop4h 50mUnited Airlines

Deal found 4/22

$249

Tue 6/105:35 amORD - ASE

1 stop6h 47mDelta

Fri 6/138:05 amASE - ORD

2 stops12h 32mDelta

Deal found 4/22

$264

Fri 6/66:00 amMDW - ASE

1 stop6h 20mDelta

Wed 6/118:05 amASE - MDW

2 stops9h 36mDelta

Deal found 4/23

$289

Sat 8/26:00 amSTL - ASE

1 stop6h 23mDelta

Sat 8/97:45 amASE - STL

1 stop7h 13mDelta

Deal found 4/23

$384

Sun 12/79:40 amSTL - ASE

1 stop5h 43mAmerican Airlines

Sat 12/1312:21 pmASE - STL

1 stop4h 54mAmerican Airlines

Deal found 4/23

$394

Wed 7/235:15 amSTL - ASE

1 stop6h 40mUnited Airlines

Fri 7/257:06 pmASE - STL

2 stops14h 34mUnited Airlines

Deal found 4/23

$452

Best flights from Illinois to Aspen
Discover carefully curated flight deals from Illinois to Aspen that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 24, 2025.

Tue 6/1010:51 amORD - ASE

Nonstop3h 13mAmerican Airlines

Fri 6/1312:08 pmASE - ORD

Nonstop2h 51mAmerican Airlines

Deal found 4/22

$239

Tue 6/107:35 pmORD - ASE

Nonstop3h 09mUnited Airlines

Fri 6/133:30 pmASE - ORD

1 stop4h 50mUnited Airlines

Deal found 4/22

$249

Tue 6/105:35 amORD - ASE

1 stop6h 47mDelta

Fri 6/138:05 amASE - ORD

2 stops12h 32mDelta

Deal found 4/22

$264

Fri 6/66:00 amMDW - ASE

1 stop6h 20mDelta

Wed 6/118:05 amASE - MDW

2 stops9h 36mDelta

Deal found 4/23

$289

Sat 8/26:00 amSTL - ASE

1 stop6h 23mDelta

Sat 8/97:45 amASE - STL

1 stop7h 13mDelta

Deal found 4/23

$384

Wed 7/235:15 amSTL - ASE

1 stop6h 40mUnited Airlines

Fri 7/257:06 pmASE - STL

2 stops14h 34mUnited Airlines

Deal found 4/23

$452

Mon 6/308:35 amSTL - ASE

1 stop5h 29mAmerican Airlines

Sun 7/66:40 pmASE - STL

2 stops13h 38mAmerican Airlines

Deal found 4/23

$896

Last-minute flights from Illinois to Aspen
Discover last-minute flight deals from Illinois to Aspen. Data last updated April 24, 2025 and is based on user searches.

Thu 4/249:15 amORD - ASE

Nonstop3h 14mUnited Airlines

Sun 4/2712:30 pmASE - ORD

Nonstop2h 52mUnited Airlines

Deal found 4/22

$509

Fri 4/256:04 amMDW - ASE

1 stop6h 34mDelta

Sun 4/271:39 pmASE - MDW

1 stop7h 43mDelta

Deal found 4/24

$529

Fri 4/2510:10 pmORD - ASE

2 stops14h 41mAmerican Airlines

Sun 4/2712:29 pmASE - ORD

2 stops16h 31mAmerican Airlines

Deal found 4/24

$857

One-way flights from Illinois to Aspen
Search for one-way flight options from Illinois to Aspen. Find affordable one-way fares based on user searches. Data last updated April 24, 2025.

Mon 6/2310:51 amORD - ASE

Nonstop3h 13mAmerican Airlines

Deal found 4/22

$145

Tue 7/226:00 amORD - ASE

1 stop6h 23mDelta

Deal found 4/23

$155

Fri 6/137:20 amSTL - ASE

1 stop6h 44mAmerican Airlines

Deal found 4/23

$189

Mon 7/215:00 amORD - ASE

1 stop6h 55mUnited Airlines

Deal found 4/23

$195

Sat 6/76:00 amMDW - ASE

1 stop6h 20mDelta

Deal found 4/23

$275

Fri 6/135:29 pmSTL - ASE

3 stops23h 36mAlaska Airlines

Deal found 4/23

$480

Cheapflights Fare Finder

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

ChicagoAspen

ORD - ASE

ORDASE

Chicago O'Hare Intl

Tue 6/10

10:51 am-1:04 pm

Nonstop3h 13m

Aspen Pitkin County

Fri 6/13

12:08 pm-3:59 pm

Nonstop2h 51m

$239

ChicagoAspen

ORD - ASE

ORDASE

Chicago O'Hare Intl

Tue 6/10

7:35 pm-9:44 pm

Nonstop3h 09m

Aspen Pitkin County

Fri 6/13

3:30 pm-9:20 pm

1 stop4h 50m

$249

ChicagoAspen

ORD - ASE

ORDASE

Chicago O'Hare Intl

Tue 6/10

5:35 am-11:22 am

1 stop6h 47m

Aspen Pitkin County

Fri 6/13

8:05 am-9:37 pm

2 stops12h 32m

$264

ChicagoAspen

MDW - ASE

MDWASE

Chicago Midway

Fri 6/6

6:00 am-11:20 am

1 stop6h 20m

Aspen Pitkin County

Wed 6/11

8:05 am-6:41 pm

2 stops9h 36m

$289

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Wed 7/23

5:15 am-10:55 am

1 stop6h 40m

Aspen Pitkin County

Fri 7/25

7:06 pm-10:40 am

2 stops14h 34m

$452

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Mon 6/30

8:35 am-1:04 pm

1 stop5h 29m

Aspen Pitkin County

Sun 7/6

6:40 pm-9:18 am

2 stops13h 38m

$896

ChicagoAspen

ORD - ASE

ORDASE

Chicago O'Hare Intl

Mon 6/23

10:51 am-1:04 pm

Nonstop3h 13m

$145

ChicagoAspen

ORD - ASE

ORDASE

Chicago O'Hare Intl

Tue 7/22

6:00 am-11:23 am

1 stop6h 23m

$155

St. LouisAspen

STL - ASE

STLASE

Lambert-St Louis

Fri 6/13

7:20 am-1:04 pm

1 stop6h 44m

$189

ChicagoAspen

ORD - ASE

ORDASE

Chicago O'Hare Intl

Mon 7/21

5:00 am-10:55 am

1 stop6h 55m

$195

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/22

Showing 1-10 of 12 results

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 $673). 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?

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

The most flights from USIL to ASE are scheduled on a Monday (1 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (1 on average).

Rainfall in Aspen 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

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

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

9,918 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Alaska Airlines

8.0

Very good

9,918 reviews

Alaska Airlines

8.0

Very good

9,918 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Delta

8.0

Very good

7,920 reviews

Alaska Airlines

8.0

Very good

9,918 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

United Airlines

7.4

Good

8,685 reviews

Alaska Airlines

8.0

Very good

9,918 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

American Airlines

7.2

Good

10,000 reviews

Alaska Airlines

8.0

Very good

9,918 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Related info for your journey

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 $145. Delta flights start at $155 while deals on United Airlines start at $195 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 (60%), Lufthansa (52%) and SkyWest Airlines (46%).
What are the cheapest flights from Illinois to Aspen?
Looking at all options, your cheapest flight can be booked for $239. While the most popular route (Chicago O'Hare Intl - Aspen Pitkin County) can be booked for $239 on average our data indicates $630 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 $673). 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

Snowmass Village

Carbondale

Buena Vista

Snowmass

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Top 2 airlines flying from Illinois to Aspen

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$277	Average$493	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$315	Average$556	FlexibilityNo cancel fee	On-time69%

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$145+ 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 6/23. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Illinois to Aspen with Cheapflights

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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 April 24, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Illinois to Aspen

Cheapest flights from Illinois to AspenExplore 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 April 24, 2025.

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 April 24, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Illinois to Aspen that are best for you.

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.

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?

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 April 24, 2025.

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 April 24, 2025.

Rainfall in Aspen by month

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

Temperature in Aspen by month

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

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 April 24, 2025.

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?

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

What are the most popular routes from Illinois to Aspen?

What are the most reliable airlines from Illinois to Aspen?

What are the cheapest flights from Illinois to Aspen?

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

How can I find direct flights from Illinois to Aspen?

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

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

Traveling to a place near Illinois?

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Alternative routes for Illinois to Aspen

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Top 2 airlines flying from Illinois to Aspen

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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 April 24, 2025.