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Find cheap Frontier flights to Chicago

CMH — CHI
Aug 26 — Sep 21
Wed 8/26
Wed 9/2
1 adult, Economy
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Find Frontier flight deals to Chicago

Cheapest Frontier flights from USA to Chicago
Explore the most affordable Frontier flight options available from USA to Chicago. Find the lowest fares with prices last updated on July 27, 2026.

This Kiwi.com deal was found by Cheapflights users on 7/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/146:11 pm
PHL
-
ORD
Nonstop2h 42m
Frontier
Mon 8/178:58 pm
ORD
-
PHL
Nonstop2h 23m
Frontier
Deal found 7/25$186
This Super.com deal was found by Cheapflights users on 7/22. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/86:05 pm
PHL
-
ORD
Nonstop2h 42m
Frontier
Thu 8/276:00 am
ORD
-
PHL
Nonstop2h 17m
Frontier
Deal found 7/22$187
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/128:30 am
PHL
-
ORD
1 stop12h 23m
Frontier
Wed 8/191:59 pm
ORD
-
PHL
1 stop7h 34m
Frontier
Deal found 7/22$188

Flights to Chicago with Frontier at a glance

Find detailed information about Frontier flights from USA to Chicago. Explore the options provided by Frontier to plan your journey from USA to Chicago. Data last updated July 27, 2026.

Popular in

June

Cheapest in

January

Average price

$174

Round-trip from

$186

One-way from

$90

Good round-trip deal

$202 or less

Good one-way deal

$110 or less
Highest demand for flights to Chicago with Frontier; 23% potential price increase.
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Best time to find cheap flights to Chicago with Frontier; 4% potential price drop.
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Average price for flights to Chicago with Frontier (round-trip).
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Frontier
  • Frontier
  • 8/14-8/17
  • Nonstop
  • 5h 05m total
  • USA to Chicago
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Frontier
  • Frontier
  • 8/27
  • Nonstop
  • 2h 31m total
  • USA to Chicago
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Price to beat on a round-trip flight from the United States to Chicago with Frontier.
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Price to beat on a one-way flight from the United States to Chicago with Frontier.
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Cheapflights Insights

Find cheap Frontier flights to Chicago

How long is the flight to Chicago with Frontier?

On average, Frontier flights from the United States to Chicago take 2 hours 10 minutes. Flights to Chicago from other popular cities in the United States will vary in length. Below are a few examples of popular routes and their flight times.

Frontier weekly flight availability to Chicago

The most flights to Chicago operated by Frontier are scheduled on a Monday (14 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (12 on average).

When is the best time to book a flight to Chicago with Frontier?

The best time to book a flight to Chicago with Frontier is 63 days before departure. On average, fares are higher if you book on the same day as departure.

When is the cheapest time to fly to Chicago with Frontier?

Users looking for the cheapest Frontier fares to Chicago should consider flying on Wednesday mornings, when prices are typically cheapest. Budget-minded travellers will want to avoid Sunday at noon, when prices are usually at their highest.

FAQs about flights to Chicago with Frontier

  • Which airport do Frontier flights arrive at when travelling to Chicago?

    Frontier flights tend to land at either Chicago Midway Airport or Chicago O'Hare Intl Airport.

  • Is Frontier the cheapest airline for a flight to Chicago?

    Flight prices will depend on many factors like date, time and cabin class so it is worth comparing flights before booking. Based on Cheapflights data the cheapest average return price for flights to Chicago tends to be with Contour.

  • Are there alternative airlines other than Frontier that fly to Chicago?

    United Airlines, American Airlines and Southwest all fly to Chicago and offer an alternative to Frontier.

  • How much is a flight to Chicago with Frontier?

    The average price for a return flight with Frontier is $214; with a one-way flight around $142.

See more FAQs

Reviews of Frontier

See what Cheapflights users have to say about their Frontier experience.
Frontier
5.6
Fair
2,753 reviews
Overview

Boarding

5.9

Comfort

5.4

Food

4.5

Crew

6.6

Entertainment

4.3

Popular Frontier flights

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