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Flights from Denver to Chicago

Flight Info | Denver to Chicago

The distance between Denver and Chicago is approximately 1,446.63 km. It takes around 2 hours 57 minutes on average to fly from Denver to Chicago. Based on Trip.com's data, travel demand peaks in July. The cheapest month to book is October.

Cheapest one-way
$35
Frontier Airlines Frontier Airlines DEN-CHI 2h 39m · Nonstop Sat, Sep 26
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Cheapest round-trip
$103
Frontier Airlines Frontier Airlines DEN-CHI 2h 39m · Nonstop Sat, Oct 3 - Mon, Oct 5
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Recommended airlines
Frontier Airlines Frontier Airlines Cheapest · From $35 Frontier Airlines Frontier Airlines Most booked
When to travel
January
Cheapest
July
Peak season for travel
Route details
1,446.63 km
Flight distance
2h 57m
Average flight time

Book direct flights from Denver to Chicago: One way flights from $35, round trip flights from $103. Find flight deals for the next 3 months below.

      • Cheapest nonstop
        DEN 5:56 PM
        2h 39m
        Nonstop
        ORD 9:35 PM
        Denver - Chicago | Sat, Oct 3 | Frontier Airlines
        ORD 10:40 PM
        2h 49m
        Nonstop
        DEN 12:29 AM
        Chicago - Denver | Mon, Oct 5 | Frontier Airlines
        $103 $165
        38% off
        38% off
        $165 $103
      • DEN 5:56 PM
        2h 39m
        Nonstop
        ORD 9:35 PM
        Denver - Chicago | Sat, Sep 26 | Frontier Airlines
        ORD 10:40 PM
        2h 49m
        Nonstop
        DEN 12:29 AM
        Chicago - Denver | Tue, Sep 29 | Frontier Airlines
        $118 $165
        28% off
        28% off
        $165 $118
      • DEN 5:56 PM
        2h 39m
        Nonstop
        ORD 9:35 PM
        Denver - Chicago | Tue, Sep 29 | Frontier Airlines
        ORD 11:06 AM
        2h 54m
        Nonstop
        DEN 1:00 PM
        Chicago - Denver | Mon, Oct 5 | Frontier Airlines
        $119 $165
        28% off
        28% off
        $165 $119
      • DEN 8:55 PM
        2h 28m
        Nonstop
        ORD 12:23 AM
        Denver - Chicago | Thu, Sep 17 | Frontier Airlines
        ORD 6:30 AM
        2h 45m
        Nonstop
        DEN 8:15 AM
        Chicago - Denver | Mon, Sep 21 | Frontier Airlines
        $124
        25% off
        $165 $124
      • DEN 5:05 PM
        2h 47m
        Nonstop
        ORD 8:52 PM
        Denver - Chicago | Sat, Aug 15 | Frontier Airlines
        ORD 9:57 PM
        3h
        Nonstop
        DEN 11:57 PM
        Chicago - Denver | Mon, Aug 17 | Frontier Airlines
        $126
        24% off
        $165 $126
      • DEN 9:55 AM
        2h 41m
        Nonstop
        ORD 1:36 PM
        Denver - Chicago | Sat, Aug 22 | Frontier Airlines
        ORD 2:41 PM
        3h 4m
        Nonstop
        DEN 4:45 PM
        Chicago - Denver | Wed, Aug 26 | Frontier Airlines
        $130
        21% off
        $165 $130
      • DEN 9:55 AM
        2h 41m
        Nonstop
        ORD 1:36 PM
        Denver - Chicago | Tue, Sep 1 | Frontier Airlines
        ORD 2:41 PM
        3h 4m
        Nonstop
        DEN 4:45 PM
        Chicago - Denver | Sat, Sep 5 | Frontier Airlines
        $137
        17% off
        $165 $137
      • DEN 6:25 AM
        2h 36m
        Nonstop
        ORD 10:01 AM
        Denver - Chicago | Wed, Sep 30 | Frontier Airlines
        ORD 10:40 PM
        2h 49m
        Nonstop
        DEN 12:29 AM
        Chicago - Denver | Mon, Oct 5 | Frontier Airlines
        $140
        15% off
        $165 $140
      • DEN 9:55 AM
        2h 41m
        Nonstop
        ORD 1:36 PM
        Denver - Chicago | Mon, Aug 24 | Frontier Airlines
        ORD 2:41 PM
        3h 4m
        Nonstop
        DEN 4:45 PM
        Chicago - Denver | Thu, Aug 27 | Frontier Airlines
        $141
        15% off
        $165 $141
      • DEN 1:00 PM
        17h 25m
        1 stop
        CHI 2:00 PM
        Denver - Chicago | Wed, Aug 12 | Normal Airline
        CHI 3:00 PM
        6h
        Nonstop
        DEN 4:00 PM
        Chicago - Denver | Fri, Aug 14 | Normal Airline
        Find more flights
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      • Cheapest nonstop
        DEN 5:56 PM
        2h 39m
        Nonstop
        ORD 9:35 PM
        Denver - Chicago | Sat, Sep 26 | Frontier Airlines
        $35 $71
        51% off
        51% off
        $71 $35
      • DEN 9:55 AM
        2h 41m
        Nonstop
        ORD 1:36 PM
        Denver - Chicago | Sat, Aug 22 | Frontier Airlines
        $52 $71
        27% off
        27% off
        $71 $52
      • DEN 6:25 AM
        2h 36m
        Nonstop
        ORD 10:01 AM
        Denver - Chicago | Thu, Oct 1 | Frontier Airlines
        $59 $71
        17% off
        17% off
        $71 $59
      • DEN 5:56 PM
        2h 39m
        Nonstop
        ORD 9:35 PM
        Denver - Chicago | Wed, Sep 30 | Frontier Airlines
        $59
        17% off
        $71 $59
      • DEN 5:56 PM
        2h 39m
        Nonstop
        ORD 9:35 PM
        Denver - Chicago | Tue, Oct 6 | Frontier Airlines
        $60
        15% off
        $71 $60
      • DEN 6:25 AM
        2h 36m
        Nonstop
        ORD 10:01 AM
        Denver - Chicago | Wed, Oct 7 | Frontier Airlines
        $60
        15% off
        $71 $60
      • DEN 9:55 AM
        2h 41m
        Nonstop
        ORD 1:36 PM
        Denver - Chicago | Sat, Aug 29 | Frontier Airlines
        $60
        15% off
        $71 $60
      • DEN 8:55 PM
        2h 28m
        Nonstop
        ORD 12:23 AM
        Denver - Chicago | Mon, Sep 28 | Frontier Airlines
        $60
        15% off
        $71 $60
      • DEN 8:55 PM
        2h 28m
        Nonstop
        ORD 12:23 AM
        Denver - Chicago | Tue, Sep 22 | Frontier Airlines
        $60
        15% off
        $71 $60
      • DEN 5:56 PM
        2h 39m
        Nonstop
        ORD 9:35 PM
        Denver - Chicago | Wed, Sep 9 | Frontier Airlines
        $61
        14% off
        $71 $61
      • DEN 1:00 PM
        17h 25m
        1 stop
        CHI 2:00 PM
        Denver - Chicago | Wed, Aug 12 | Normal Airline
        Find more flights
        Find more flights

Popular airlines from Denver to Chicago

You can choose from 4 airlines that fly from Denver to Chicago, including Frontier Airlines, American Airlines, and United Airlines. Frontier Airlines has lowest fares on this route.
Frontier Airlines logo Frontier Airlines
American Airlines logo American Airlines
United Airlines logo United Airlines
Delta Air Lines logo Delta Air Lines
Airlines are determined based on actual purchased flight tickets from Denver to Chicago according to previous 12 months data from Trip.com.

Trip.com price insights on flights from Denver to Chicago

Which month has the cheapest one-way flights from Denver to Chicago?

The average price of one-way flights from Denver to Chicago purchased by Trip.com users by month over the past 12 months.

Based on Trip.com’s data, the cheapest month for flights from Denver to Chicago is January, with an average price of $126; while the month with the highest flight price is usually April, with an average price of up to $212.

$212
$169
$126
$83
    Cheapest
  • $170
    Aug
  • $188
    Sep
  • $142
    Oct
  • $161
    Nov
  • $140
    Dec
  • $126
    Jan
  • $193
    Feb
  • $142
    Mar
  • $212
    Apr
  • $160
    May
  • $171
    Jun
  • $195
    Jul

When is the cheapest day to fly from Denver to Chicago during Labor Day?

Data is based on the lowest one-way price from Denver to Chicago during Labor Day on Trip.com in the past 3 days.

Labor Day is scheduled for Sep 7. The cheapest flights from Denver to Chicago are available on Sep 5, with fares starting at $64.

$164
$114
$64
$14
    Cheapest
  • $137
    3
    Sep
  • $107
    4
  • $64
    5
  • $65
    6
  • $164
    7
  • $87
    8
  • $76
    9

Frequently Asked Questions

  • What are the cheapest flights from Denver to Chicago (DEN-CHI)?

    Based on Trip.com data, Frontier Airlines offers one-way fares as low as $35 on Cheapest nonstop routes (e.g. DEN to ORD on Sat, Sep 26), while Frontier Airlines offers Cheapest nonstop round-trips from $103 departing on Sat, Oct 3 and returning on Mon, Oct 5.
  • At the moment, you can catch a nonstop flight from Denver to Chicago with the following airlines, including: Frontier Airlines American Airlines United Airlines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.
  • It takes around 2 hours 57 minutes to fly from Denver (DEN) to Chicago (CHI).
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Denver to Chicago is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • Based on Trip.com data in the past 4 weeks, there is 168 flight per week flying from Denver to Chicago. You can check the weekly schedule for popular airlines on this route below: United Airlines: S/-/-/-/-/-/- -- UA1482 (06:27) United Airlines: S/-/-/-/-/-/- -- UA2446 (10:02) United Airlines: S/M/T/W/T/F/S -- UA2329 (09:50)
  • To find best deals on flights from Denver to Chicago, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Sat, Sep 26, with one-way flights priced at just $35.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Frontier Airlines.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for Chicago travel is around July.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Denver to Chicago is October, when demand for travel is lower.
  • After crunching the numbers on our August flight calendar, it's currently cheapest to fly from Denver to Chicago on August 20, 2026 with Frontier Airlines, with prices starting at $69.
  • You can land at any one of the following hubs in Chicago, with Denver International Airport to O'Hare International Airport (DEN-ORD) is by far the most common option on this route: O'Hare International Airport (ORD) Chicago Midway International Airport (MDW) Chicago Rockford International Airport (RFD).
  • The time difference between Chicago and Denver is 1h.
  • Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.
  • Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from Denver to Chicago is $143. Fares vary by travel date, airline and availability.
  • Based on Trip.com data for travel in the next 30 days, the average round-trip fare from Denver to Chicago is $236. The final price depends on the outbound and return dates, airline and fare conditions.
  • Enter Denver and Chicago, choose your travel dates and passengers, then compare flights by price, duration and baggage. Select a fare, review the change and cancellation rules, enter traveler details and complete payment to receive your confirmation.
  • Frontier Airlinesare the most popular budget airlines flying from Denver to Chicago. Check baggage, seat and payment fees before comparing the final price.

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Note: Prices shown on this page are estimated lowest price and include all taxes and fees found in the last 24 hours.

Book with no extra fees

Prices displayed in this page are all-inclusive prices (incl. taxes, fuel surcharge, civil aviation development fund, etc) with all fees confirmed before payment. Fees for luggage, meals, WLAN, or other additional services are also included as shown in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page were updated within last 24 hours—even in real-time. The more popular the route, the more precise the data.

Change & Cancellation Policy

Trip.com displays flight cancellation and change policies for each flight ticket during the booking process, including fees and applicable conditions. Please check the following scenarios:
Voluntary cancellation/change:
To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy.
Cancellation/change due to a flight schedule change:
If the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.