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Find and compare Frontier flights to Illinois

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Recent Frontier flights to Illinois found by users

Cheap Frontier Flight Deals to Illinois

Enter your travel dates to find the best prices.
Frontier Logo
2:50 pm - 5:22 pmDFW-ORD
2h 32mnonstop
Frontier Logo
5:15 am - 8:00 amORD-DFW
2h 45mnonstop
$88Frontier
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Sat, Dec 20 - Mon, Dec 22
Frontier Logo
10:22 pm - 12:52 amDFW-ORD
2h 30mnonstop
Frontier Logo
11:01 am - 1:52 pmORD-DFW
2h 51mnonstop
$90Frontier
Find Deal
Sat, Nov 22 - Mon, Dec 8
Frontier Logo
10:24 pm - 12:59 amDFW-ORD
2h 35mnonstop
Frontier Logo
9:53 pm - 8:54 amORD-DFW
11h 01m1 stop
$92Frontier
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Tue, Nov 18 - Thu, Dec 11
Frontier Logo
1:00 pm - 2:57 pmJFK-ORD
2h 57mnonstop
Frontier Logo
4:01 pm - 12:59 amORD-JFK
7h 58m1 stop
$93Frontier
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Wed, Dec 10 - Wed, Dec 17
Frontier Logo
10:22 pm - 12:52 amDFW-ORD
2h 30mnonstop
Frontier Logo
4:01 pm - 10:54 pmORD-DFW
6h 53m1 stop
$93Frontier
Find Deal
Mon, Nov 24 - Wed, Dec 10
Frontier Logo
1:00 pm - 2:57 pmJFK-ORD
2h 57mnonstop
Frontier Logo
11:44 am - 12:59 amORD-JFK
12h 15m1 stop
$94Frontier
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Fri, Dec 5 - Mon, Dec 8
Frontier Logo
10:22 pm - 12:52 amDFW-ORD
2h 30mnonstop
Frontier Logo
9:53 pm - 8:54 amORD-DFW
11h 01m1 stop
$94Frontier
Find Deal
Mon, Nov 24 - Thu, Dec 11
Frontier Logo
1:00 pm - 2:57 pmJFK-ORD
2h 57mnonstop
Frontier Logo
11:44 am - 12:59 amORD-JFK
12h 15m1 stop
$95Frontier
Find Deal
Fri, Dec 5 - Thu, Dec 11
Frontier Logo
6:49 pm - 9:27 pmDFW-ORD
2h 38mnonstop
Frontier Logo
10:22 pm - 1:06 amORD-DFW
2h 44mnonstop
$95Frontier
Find Deal
Tue, Dec 23 - Tue, Dec 30
Frontier Logo
5:30 am - 8:04 amDFW-ORD
2h 34mnonstop
Frontier Logo
11:01 am - 1:52 pmORD-DFW
2h 51mnonstop
$96Frontier
Find Deal
Thu, Dec 4 - Mon, Dec 8

Frontier flights to Illinois at a glance

Best Price Found

$59

Fastest flight time

2h 18m

Direct flights

Every day

Airports in Illinois

1 airport
The best one-way flight to Illinois from United States in the past 72 hours is $59. The best round-trip flight deal from United States to Illinois found on momondo in the last 72 hours is $71.
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The fastest flight from United States to Illinois takes 2h 18m
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Direct flights go from United States to Illinois every day.
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There is 1 airport near Illinois: Chicago O'Hare Intl (ORD)
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Insights on Frontier flights to Illinois

Data designed to help you find the right flight

What is the cheapest month to fly Economy Class to Illinois?

In general, January is the cheapest month to fly Economy Class from United States to Illinois. Due to it being the ‘off-season’ during this time, you can expect Economy Class flight prices to be around $137. If you aren’t able to travel during the month of January, then book Economy Class flights to Illinois from United States during October instead. Economy Class flights to Illinois in October, while not as cheap as those in January, still average around $150.

What is the cheapest day to depart on your Economy Class flight to Illinois?

The cheapest day to depart from United States to Illinois is on a Friday when prices can be found for as low as $94. Be sure to avoid booking your departure on a Wednesday as prices are generally higher than usual. According to our data, the average Economy Class ticket price to Illinois on a Wednesday is $244.

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

You are more likely to see cheaper flights to Illinois from United States when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $155 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from United States for as low as $114 on momondo.

What is the cheapest United States to Illinois flight route?

Fly from Newark to Chicago Midway for the best United States - Illinois flight prices

What cabin class options are available on United States to Illinois flights?

There is only 1 cabin class available to choose from on United States to Illinois flights.

Can stopping save me money on United States to Illinois flights?

No. A direct flight is the cheapest option for a flight between United States to Illinois.

Frequently asked questions about flights to Illinois with Frontier

Is Frontier generally cheaper than other airlines for flights to Illinois?

Lots of factors influence the price of a flight, whether that's with Frontier or other airlines so it is best to search and compare before booking. The airline flying to Illinois with the cheapest average return price tends to be Allegiant Air.

Which other airlines fly to Illinois?

Aside from Frontier, United Airlines, Southwest and Alaska Airlines also fly to Illinois.

How much is a flight to Illinois with Frontier?

The average price for a return flight is $203; with a one-way flight around $127.

Which airport do Frontier flights arrive at for Illinois?

Frontier flights tend to land at either Chicago Midway Airport or Chicago All airports.

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