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Cheap Frontier Flight Deals to Chicago

 
Here are some of the best deals found on KAYAK recently from Frontier to Chicago that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip Frontier flight deals to Chicago

Sat, Sep 12 - Mon, Sep 14
Frontier Logo
3:30 pm - 10:59 pmPHL  Philadelphia-ORD Chicago O'Hare Intl
8h 29m1 stop Orlando
Frontier Logo
7:25 am - 10:49 amORD  Chicago O'Hare Intl-PHL Philadelphia
2h 24mnonstop
$174Frontier
Wed, Sep 16 - Mon, Sep 21
Frontier Logo
12:40 pm - 6:23 pmPHL  Philadelphia-ORD Chicago O'Hare Intl
6h 43m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
7:25 am - 10:49 amORD  Chicago O'Hare Intl-PHL Philadelphia
2h 24mnonstop
$175Frontier
Thu, Oct 1 - Fri, Oct 2
Frontier Logo
11:54 am - 1:30 pmPHL  Philadelphia-ORD Chicago O'Hare Intl
2h 36mnonstop
Frontier Logo
7:25 am - 10:49 amORD  Chicago O'Hare Intl-PHL Philadelphia
2h 24mnonstop
$176Frontier
Wed, Oct 21 - Fri, Oct 23
Frontier Logo
11:28 am - 8:28 pmBOS  Boston Logan Intl-ORD Chicago O'Hare Intl
10h 00m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
9:33 pm - 10:52 amORD  Chicago O'Hare Intl-BOS Boston Logan Intl
12h 19m1 stop Atlanta Hartsfield-Jackson
$176Frontier
Thu, Sep 10 - Sun, Sep 13
Frontier Logo
11:54 am - 1:30 pmPHL  Philadelphia-ORD Chicago O'Hare Intl
2h 36mnonstop
Frontier Logo
7:25 am - 10:49 amORD  Chicago O'Hare Intl-PHL Philadelphia
2h 24mnonstop
$177Frontier
Fri, Oct 30 - Sun, Nov 1
Frontier Logo
11:05 am - 12:41 pmPHL  Philadelphia-ORD Chicago O'Hare Intl
2h 36mnonstop
Frontier Logo
2:03 pm - 11:11 pmORD  Chicago O'Hare Intl-PHL Philadelphia
8h 08m1 stop Atlanta Hartsfield-Jackson
$178Frontier
Thu, Oct 22 - Tue, Nov 3
Frontier Logo
4:47 pm - 6:24 pmPHL  Philadelphia-ORD Chicago O'Hare Intl
2h 37mnonstop
Frontier Logo
2:03 pm - 11:11 pmORD  Chicago O'Hare Intl-PHL Philadelphia
8h 08m1 stop Atlanta Hartsfield-Jackson
$179Frontier
Thu, Sep 24 - Mon, Sep 28
Frontier Logo
11:54 am - 1:30 pmPHL  Philadelphia-ORD Chicago O'Hare Intl
2h 36mnonstop
Frontier Logo
7:28 pm - 7:16 amORD  Chicago O'Hare Intl-PHL Philadelphia
10h 48m1 stop Atlanta Hartsfield-Jackson
$180Frontier
Fri, Sep 18 - Mon, Sep 21
Frontier Logo
11:54 am - 1:30 pmPHL  Philadelphia-ORD Chicago O'Hare Intl
2h 36mnonstop
Frontier Logo
7:28 pm - 7:16 amORD  Chicago O'Hare Intl-PHL Philadelphia
10h 48m1 stop Atlanta Hartsfield-Jackson
$181Frontier
Fri, Aug 28 - Mon, Aug 31
Frontier Logo
6:00 am - 7:29 amPHL  Philadelphia-ORD Chicago O'Hare Intl
2h 29mnonstop
Frontier Logo
7:05 am - 8:28 pmORD  Chicago O'Hare Intl-PHL Philadelphia
12h 23m1 stop Atlanta Hartsfield-Jackson
$182Frontier
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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 $249 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 $90 one-way, and $193 round-trip on the route from Baltimore to Chicago O'Hare Intl Airport. The most popular route is from Philadelphia to Chicago O'Hare Intl Airport and the cheapest ticket found on this route in the last 5 days was $174 return.

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

Each week there are around 119 direct flights from within the United States to Chicago. The most common day for departures is Monday, with 16% 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.

Good to know

Low season

February

Cheapest flight

$90

Average price round-trip

$253

Good deal round-trip

$215

Good deal one-way

$114
Best time to beat the crowds with an average 27% drop in price.
Most popular time to fly and prices are also 6% lower on average.
Flight from Baltimore to Chicago O'Hare Airport
(avg. price over the last 2 weeks)
or less
or less

When to book flights with Frontier to Chicago

Average price per month
Flight prices as travel date approaches

FAQs for flying to Chicago with Frontier

  • Is Frontier cheaper than other airlines flying to Chicago?

    With an average return price of $265, Frontier is cheaper than Delta, United Airlines and Alaska Airlines when it comes to flights to Chicago. However, the cheapest airline flying to Chicago is Allegiant Air, with an average return price of $154.

  • Which other airlines fly to Chicago?

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

  • How much is a flight to Chicago with Frontier?

    On average, Frontier flights to Chicago cost $160 for one-way and $265 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.

Top tips for your flights to Chicago with Frontier

  • 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, $224 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.

Frontier customer reviews

5.6
Fair2,712 verified ratings
4.5Food
5.9Boarding
4.3Entertainment
6.5Crew
5.4Comfort
Traveler rating:
Sort by:
G
2.0 Poor
See my last review
G
4.0 Mediocre
I know Frontier is a “no-frills” airline. I understand the concept. However, I jumped on some tickets for our family vacation, expecting to play a bit of a game to figure out the family bags and not over spend. In the end, I got the short end of this deal by far. 1. I did not expect them to charge the baggage fee for each direction. It makes the fee look high-ish at a glance, but reasonable. Then when you get to checkout and realize you have to pay it twice to come home with your luggage, it becomes ridiculous. 2. The low checked bag weight limit. I am used to packing a 50lb bag with my preferred airline. Frontier’s artificially low 40lb limit more quickly triggers the extra weight fee, which almost DOUBLES the price of the bag if you go over ($79 for the bag/$75 for the next 10 lbs) 3. The fee for a carry-on bag is the same as a checked bag but with a lower size and weight limit. Make it make sense! 4. The seats are terrible. My 2.5 hour flight almost had me losing my mind. I’m 6’3” and my femurs barely fit in the space provided. My knees had to wiggle just right to jam into the crack next to the armrest of the seat in front of me. The cushioning was thin and inadequate. I am tall but I’m not a freak. These seats are unacceptable. 5. I overheard the woman next to me speaking with the gate agent about being charged a $25 fee for not checking in online - she checked in at the airport counter when she arrived. That’s ridiculous. She was old and in a wheelchair. She had a paper boarding pass, and was obviously not tech savvy. She should not be punished for that. 6. They do not have good placement in the terminals. It was always out on the end or down on a subfloor, and we had to walk out on the tarmac almost every time. In Denver. Their home airport! 7. Every time I loaded a new page on the website while buying my tickets or my bags, it was constantly trying to upsell me on some esoteric bundle. Like, a pop-up every time. Very annoying. 8. No screens in the boarding area (at least where we were) to confirm you’re in the right place. Just static gate number signs. I am sure these are standard practices for Frontier, and I should have read more about them before I purchased tickets, but as a result of this single round trip, I do not plan to ever use this cut-rate airline again. I would rather pay the normal amount for a ticket and be treated like a customer instead of a mark.
A
2.0 Poor
Our flight was delayed 2 hours and when they changed the the time to 1 hour I wasn't alerted and when I checked the gate the plane was still there but they already shut the doors so I had to buy another flight.
A
6.0 Okay
Okay 👍
F
6.0 Okay
Don’t even matter if I write it y'all not going to fix it
A
2.0 Poor
Never again
A
8.0 Very good
Great except upon arrival it took them a long time to open the doors
A
10.0 Wonderful
Like and airlines should be.
A
10.0 Wonderful
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
L
2.0 Poor
Terrible. Delayed my family flight for several hours affecting family plans
Read more about Frontier

Everything you need to know for your flight to Chicago

Other airlines flying to Chicago

Flights from the other most popular airlines that fly to Chicago according to KAYAK users. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.
United Airlines flights to Chicago
American Airlines flights to Chicago
Delta flights to Chicago
Southwest flights to Chicago