Is Frontier cheaper than other airlines flying to Chicago?

With an average return price of $310, Frontier is cheaper than Alaska Airlines, United Airlines and Delta when it comes to flights to Chicago. However, the cheapest airline flying to Chicago is Allegiant Air, with an average return price of $137.

Which other airlines fly to Chicago?

Along with Frontier, you can also fly to Chicago with Southwest, United Airlines, American Airlines, Alaska Airlines, Allegiant Air, United Airlines, Contour, Delta, Allegiant Air, Avelo Airlines, Avelo Airlines and Denver Air Connection.

How much is a flight to Chicago with Frontier?

On average, Frontier flights to Chicago cost $160 for one-way and $310 return.

Which airport do Frontier flights to Chicago fly into?

Frontier flights to Chicago will fly into either Chicago O'Hare Airport, Chicago Midway Airport and Chicago Greater Rockford.

Frontier flights to Chicago (CHI) from $89

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Flight Deals

Cheap Frontier Flight Deals to Chicago

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent round-trip Frontier flight deals to Chicago

Wed, Oct 21 - Fri, Oct 23

11:28 am - 8:28 pm

BOS

ORD

10h 00m

1 stop

9:33 pm - 10:52 am

ORD

BOS

12h 19m

1 stop

$161Frontier

Sat, Aug 29 - Sat, Sep 5

12:45 pm - 8:08 pm

BOS

ORD

8h 23m

1 stop

7:44 pm - 9:09 am

ORD

BOS

12h 25m

1 stop

$166Frontier

Sat, Aug 29 - Sat, Sep 5

12:45 pm - 8:08 pm

BOS

ORD

8h 23m

1 stop

7:44 pm - 9:09 am

ORD

BOS

12h 25m

1 stop

$167Frontier

Tue, Sep 8 - Fri, Sep 18

12:45 pm - 8:08 pm

BOS

ORD

8h 23m

1 stop

3:50 pm - 10:51 am

ORD

BOS

18h 01m

1 stop

$168Frontier

Tue, Sep 8 - Wed, Sep 9

12:45 pm - 8:08 pm

BOS

ORD

8h 23m

1 stop

3:50 pm - 10:22 am

ORD

BOS

17h 32m

1 stop

$170Frontier

Mon, Sep 14 - Fri, Sep 18

12:54 pm - 6:23 pm

BOS

ORD

6h 29m

1 stop

3:50 pm - 10:51 am

ORD

BOS

18h 01m

1 stop

$171Frontier

Thu, Sep 10 - Sat, Sep 12

11:17 am - 10:59 pm

BOS

ORD

12h 42m

1 stop

3:50 pm - 10:58 am

ORD

BOS

18h 08m

1 stop

$172Frontier

Mon, Oct 5 - Wed, Oct 7

11:54 am - 1:30 pm

PHL

ORD

2h 36mnonstop

6:00 am - 2:21 pm

ORD

PHL

7h 21m

1 stop

$175Frontier

Wed, Sep 2 - Wed, Sep 9

12:45 pm - 8:08 pm

BOS

ORD

8h 23m

1 stop

3:50 pm - 10:22 am

ORD

BOS

17h 32m

1 stop

$175Frontier

Sat, Sep 5 - Sat, Sep 12

12:45 pm - 8:08 pm

BOS

ORD

8h 23m

1 stop

3:50 pm - 10:58 am

ORD

BOS

18h 08m

1 stop

$176Frontier

Useful Info

KAYAK's insights & trends for Chicago flights with Frontier

Get data-powered insights and trends into Frontier flights to Chicago to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly with Frontier to Chicago?

The cheapest month for Frontier flights to Chicago is January, where tickets cost $111 (return) on average. On the other hand, the most expensive months to fly this route on Frontier are June and July, where the average cost of round-trip tickets is $255 and $229 respectively.

How far in advance should I book Frontier flights to Chicago?

For the absolute cheapest price on Frontier, our data suggests you should book 3 weeks before departure.

What is the cheapest flight to Chicago with Frontier?

The cheapest airline ticket to Chicago from the United States with Frontier in the last 5 days was $89 one-way, and $196 round-trip on the route from Washington, D.C. Reagan-National Airport to Chicago O'Hare Intl Airport. The most popular route is from New York LaGuardia Airport to Chicago O'Hare Intl Airport and the cheapest ticket found on this route in the last 5 days was $234 return.

How many direct flights does Frontier operate to Chicago every week?

Each week there are around 94 direct flights from within the United States to Chicago. The most common day for departures is Monday, with 15% of flights taking off on this day.

What is the cheapest day to fly to Chicago?

Based on KAYAK data, the cheapest day to fly to Chicago is Saturday where tickets can be as cheap as $185. On the other hand, the most expensive day to fly is Sunday, where prices are $217 on average.

What is the cheapest time of day to fly to Chicago with Frontier?

The cheapest time of day to fly to Chicago with Frontier is generally in the morning, when flights cost $185 on average.

Low season	February
High season	July
Cheapest flight	$89
Average price round-trip	$257
Good deal round-trip	$218
Good deal one-way	$176

Best time to beat the crowds with an average 26% drop in price.

Most popular time to fly with an average 24% increase in price.

Flight from Reagan Washington National Airport to Chicago O'Hare Airport

(avg. price over the last 2 weeks)

or less

When to book flights with Frontier to Chicago

Average price per month

Flight prices as travel date approaches

Is Frontier cheaper than other airlines flying to Chicago?
With an average return price of $310, Frontier is cheaper than Alaska Airlines, United Airlines and Delta when it comes to flights to Chicago. However, the cheapest airline flying to Chicago is Allegiant Air, with an average return price of $137.
Which other airlines fly to Chicago?
Along with Frontier, you can also fly to Chicago with Southwest, United Airlines, American Airlines, Alaska Airlines, Allegiant Air, United Airlines, Contour, Delta, Allegiant Air, Avelo Airlines, Avelo Airlines and Denver Air Connection.
How much is a flight to Chicago with Frontier?
On average, Frontier flights to Chicago cost $160 for one-way and $310 return.
Which airport do Frontier flights to Chicago fly into?
Frontier flights to Chicago will fly into either Chicago O'Hare Airport, Chicago Midway Airport and Chicago Greater Rockford.

Looking to fly from the United States to Chicago with Frontier? 25% of our users found flights for the following prices or less: From Dallas/Fort Worth Airport $104 one-way, $223 round-trip; from Newark Airport $150 one-way, $202 round-trip.
The cheapest flight to Chicago with Frontier found on KAYAK in the last 2 weeks departed from Dallas/Fort Worth Airport and cost $95.
If you’re intending to fly with Frontier, book your flight to Chicago at least 1 week before departure to ensure a below-average price.
High season for flights to Chicago with Frontier is October and prices are highest at this time. The cheapest month to fly is February.

5.6

Fair2,741 verified ratings

4.5Food

5.4Comfort

5.9Boarding

4.3Entertainment

6.6Crew

6.0 Okay

Fabian, Jul 2026

Don’t even matter if I write it y'all not going to fix it

2.0 Poor

Anonymous, Jul 2026

Never again

8.0 Very good

Anonymous, Jul 2026

Great except upon arrival it took them a long time to open the doors

10.0 Wonderful

Annette, Jul 2026

Like and airlines should be.

10.0 Wonderful

Annette, Jul 2026

Frontier feels like a family I Worked for Eastern Airlines back in the day and I felt the family vibe that I had then. Thank you

2.0 Poor

Lateefat, Jul 2026

Terrible. Delayed my family flight for several hours affecting family plans

2.0 Poor

Ihor, Jul 2026

During the flight I suddenly felt very sick, and no one from the crew even tried to help me or check on my condition. They seemed completely indifferent and showed no concern for my well-being. I was very disappointed by the lack of care and compassion. I hope the airline improves its customer service and trains its crew to respond better when passengers need assistance.

2.0 Poor

Colin, Jul 2026

Repeated delays due to poor aircraft maintenance.

8.0 Very good

Malibongwe, Jul 2026

I liked Everything

2.0 Poor

Anonymous, Jul 2026

Tiny seats, no entertainment, no amenities, delays, they charge for carry on and their allowed personal item is smaller than in other airlines.

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KAYAK's insights & trends for Chicago flights with Frontier

What is the cheapest month to fly with Frontier to Chicago?

How far in advance should I book Frontier flights to Chicago?

What is the cheapest flight to Chicago with Frontier?

How many direct flights does Frontier operate to Chicago every week?

What is the cheapest day to fly to Chicago?

What is the cheapest time of day to fly to Chicago with Frontier?

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