ONT - CHI

$69 Find Cheap Flights from Ontario to Chicago

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Chicago departing on 2/28. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Chicago

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Chicago, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Chicago, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$148
Overall average: $518
Frontier
ven. 1/23dim. 1/25
ONT - ORD • 1 stop
Cheapest non-stop
$419
Southwest
jeu. 2/12lun. 2/16
ONT - MDW • Non-stop
Our travelers' advice
AI-powered summary based on content written by travel experts. AI can make mistakes.
United's Economy Plus offers extra legroom on flights.
MDW's Orange Line provides a quick ride to downtown.
Expert advice
Expert advice
Expert advice
Expert advice
Top routes
ONT-MDW
Cheapest • 16% average savings
ONT-ORD
Most popular
Insights
Insights
Insights
Insights
When to book
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 36% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
June
Cheapest • 16% price drop
October
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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Flight Deals
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Expert advice
Flight Deals

Cheap Flights from Ontario to Chicago (ONT-CHI)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario 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 flight deals from Ontario to Chicago

ven., janv. 23 - dim., janv. 25
Frontier Logo
10:18 am - 8:29 pm
ONT
-
ORD
8h 11m1 stop
Frontier Logo
9:38 pm - 12:10 pm
ORD
-
ONT
16h 32m1 stop
$148Frontier
sam., févr. 14 - lun., févr. 16
Frontier Logo
8:21 am - 11:17 pm
ONT
-
ORD
12h 56m1 stop
Frontier Logo
7:19 pm - 1:11 pm
ORD
-
ONT
19h 52m1 stop
$153Frontier
sam., févr. 21 - jeu., févr. 26
Frontier Logo
8:21 am - 11:17 pm
ONT
-
ORD
12h 56m1 stop
Frontier Logo
6:34 pm - 1:26 pm
ORD
-
ONT
20h 52m1 stop
$158Frontier
mar., janv. 27 - dim., févr. 1
Multiple Airlines Logo
7:15 am - 10:38 pm
ONT
-
ORD
37h 23m2 stops
Multiple Airlines Logo
9:38 pm - 12:10 pm
ORD
-
ONT
16h 32m1 stop
$172Multiple Airlines
lun., janv. 12 - jeu., janv. 15
Frontier Logo
6:00 am - 2:05 pm
ONT
-
MDW
6h 05m1 stop
Frontier Logo
11:05 am - 7:01 pm
MDW
-
ONT
9h 56m1 stop
$182Frontier
jeu., févr. 12 - jeu., févr. 26
Frontier Logo
2:08 pm - 11:14 pm
ONT
-
ORD
7h 06m1 stop
Frontier Logo
6:34 pm - 1:26 pm
ORD
-
ONT
20h 52m1 stop
$183Frontier
jeu., févr. 5 - dim., févr. 8
Frontier Logo
6:20 am - 6:31 pm
ONT
-
ORD
10h 11m1 stop
Frontier Logo
9:38 pm - 12:10 pm
ORD
-
ONT
16h 32m1 stop
$190Frontier
ven., janv. 23 - dim., janv. 25
Frontier Logo
10:18 am - 8:29 pm
ONT
-
ORD
8h 11m1 stop
Frontier Logo
4:19 pm - 12:10 pm
ORD
-
ONT
21h 51m2 stops
$192Frontier
sam., janv. 31 - lun., févr. 2
Frontier Logo
7:15 am - 10:57 am
ONT
-
ORD
25h 42m1 stop
Frontier Logo
3:55 pm - 1:37 pm
ORD
-
ONT
23h 42m2 stops
$193Frontier
mer., janv. 14 - jeu., janv. 22
Multiple Airlines Logo
6:49 pm - 12:34 pm
ONT
-
RFD
15h 45m1 stop
Multiple Airlines Logo
1:24 pm - 7:53 pm
RFD
-
ONT
8h 29m1 stop
$346Multiple Airlines
Booking Insights

KAYAK's insights & trends for Ontario to Chicago flights

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

What is the cheapest Ontario to Chicago flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest return flight from Ontario to Chicago costs $198 on the route between Ontario (ONT) and Chicago Midway Airport (MDW). Over the past month, this route was, on average, 16% cheaper than other Ontario-Chicago routes. The most popular route is between Ontario (ONT) and Chicago O'Hare Intl Airport (ORD).

What’s the cheapest day of the week to fly from Ontario to Chicago?

The average price of all round-trip flights from Ontario to Chicago clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Chicago on a Thursday and more expensive on a Sunday. On your return trip to Ontario, you should consider flying back on a Tuesday, and avoid Mondays for better deals.

What is the cheapest month to fly from Ontario to Chicago?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Chicago, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Ontario to Chicago is June, where tickets cost $317 (return) on average. On the other hand, the most expensive months are December and March, where the average cost of round-trip tickets is $530 and $418 respectively.

Can I save money by flying with a layover from Ontario to Chicago?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $446 on average.

How far in advance should I book a flight from Ontario to Chicago?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Ontario to Chicago, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Ontario to Chicago, you should book around 4 weeks before departure, which saves you about 36% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

Expert advice

Expert advice for your flight from Ontario to Chicago

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
United Airlines

United's Economy Plus offers up to 6 inches more legroom than standard economy seats.


United's Wi-Fi varies; T-Mobile customers get free streaming on flights.

Southwest

Southwest offers free carry-on and personal item, but checked bags now incur fees.


Southwest's cancellation policy allows changes up to 10 minutes before departure with travel credit or refund.

Airports
ONT

ONT offers streamlined security with average wait times of 6-15 minutes, making it ideal for business travelers with early flights.

ORD

Take the CTA Blue Line from ORD to downtown Chicago in about 45 minutes, avoiding traffic delays.

MDW

MDW's Orange Line offers a quick 25-minute ride to downtown Chicago, ideal for avoiding traffic.

Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines, ORD and MDW

Stefanie Waldek

Stefanie Waldek

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Read more
Blane Bachelor

Blane Bachelor

Expert on Southwest

Blane Bachelor

Blane Bachelor

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Read more
Jennifer Simonson

Jennifer Simonson

Expert on ONT

Jennifer Simonson

Jennifer Simonson

Jennifer Simonson is driven by her lifelong commitment to exploring the globe. Her insatiable curiosity had led her to immerse herself into diverse locations like Oklahoma City and Pismo. Her hotel recommendations are the result of the myriad hotels she's stayed at across her travels. Along her journey, she cherishes engaging conversations with locals, indulging in the finest ice cream, trying her hand at surfing, and embarking on nature-filled hikes.

Read more

Good to know

Low seasonFebruary
Cheapest flight$69
Best time to beat the crowds with an average 16% drop in price.
Most popular time to fly and prices are also 4% lower on average.
Flight from Ontario to Chicago O'Hare Airport

When to book flights from Ontario to Chicago

Are your dates flexible? Find out the best times to travel from Ontario to Chicago based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Ontario to Chicago

  • Which is the best arrival airport if I want to visit the Museum of Science and Industry?

    ORD offers the best linkage to The Museum of Science and Industry, which lies approximately 24.2 miles away. Bus line 6 provides the most convenient connection to this attraction, covering the journey in about 1h 18min. For a quicker connection, take a taxi and get there in under 30min.

  • Is there a prayer room at Chicago Midway International Airport (MDW)?

    Religious souls landing at MDW from ONT and want to thank the Almighty for the safe trip will find a sacred suite where they can retreat quietly and respectfully. You can locate this sanctuary in Concourse C on the mezzanine level, and it’s open 24/7.

  • Are there car rentals from O'Hare International Airport (ORD) to downtown Chicago?

    There’s a wide range of car rental services at ORD, ideal for anyone keen to explore Chicago in a car. Once you land at the airport, locate your car dealer’s desk in the arrival hall. A free shuttle will drop you at the pick-up point at Routes Car & Truck Rentals at 3901 Mannheim Rd, Schiller Park.

  • Does O'Hare International Airport run an art program?

    ORD boasts an extensive exhibition of unique pieces of art and crafts throughout its terminals. Consider killing time in concourses B and C and enjoy the various sculptures, murals, and paintings.

  • What is the cheapest flight from Ontario to Chicago?

    In the last 3 days, the lowest price for a flight from Ontario to Chicago was $69 for a one-way ticket and $148 for a round-trip.

  • Do I need a passport to fly between Ontario and Chicago?

    No, a passport isn't needed to fly from Ontario to Chicago. However, local authorities might ask for an official ID.

  • Which airports will I be using when flying from Ontario to Chicago?

    On your way to Chicago, you’ll fly out from Ontario. You’ll be landing in one of Chicago’s 2 airports: Chicago Midway or Chicago O'Hare Intl.

  • Which airlines offer Wi-Fi service onboard planes from Ontario to Chicago?

    JetBlue, Delta, Hawaiian Airlines, American Airlines, and Alaska Airlines offer inflight Wi-Fi service on the Ontario to Chicago flight route.

  • Which aircraft models fly most regularly from Ontario to Chicago?

    The Airbus A321neo is the aircraft model that flies most regularly on the Ontario to Chicago flight route.

  • Which airline alliances offer flights from Ontario to Chicago?

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Ontario and Chicago, with SkyTeam being the most commonly used for this route.

  • On which days can I fly direct from Ontario to Chicago?

    There are nonstop flights from Ontario to Chicago on a daily basis.

  • Which is the best airline for flights from Ontario to Chicago, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from Ontario to Chicago are Southwest and Delta. With an average price for the route of $451 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $346 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from Ontario to Chicago?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Chicago.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Chicago?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Chicago from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ontario to Chicago?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Chicago with an airline and back to Ontario with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Chicago?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Chicago from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Ontario to Chicago

  • Looking for a cheap flight? 25% of our users found flights on this route for $185 or less one-way and $385 or less round-trip.
  • Ontario International Airport (ONT) is a hub of multiple licensed car and shuttle operators providing services to several destinations within and beyond this establishment. Many run counters at the passenger terminals, parking lots, and car rental centers. Still, most of the nearby airport hotels offer courtesy shuttles to and from the airport.
  • Those who intend to leave ONT for Chicago early in the morning will find it helpful if they spend a night in one of the hotels near Ontario International Airport (ONT). Usually, such properties offer complimentary cars to and from the departure terminal, thus enabling you to be there in time for your voyage. La Quinta Inn & Suites by Wyndham Ontario Airport guarantees that stay.
  • If you’re departing from Ontario International Airport (ONT) to Chicago, remember that the establishment has three terminals. If you're using United Airlines, you’ll leave via Terminal 2, while Terminal 4 serves Southwest Airlines. Movement from one terminal to the other is via an Inter-Terminal Shuttle, which runs every 5-10min on the landside.
  • Those flying aboard American Airlines from ONT to Chicago should know that the carrier runs its hub at Chicago O'Hare International Airport (ORD). Passengers arrive at ORD via Terminal 3 and can retreat to the Admirals Club in the same terminal, Airside. Members and registered cardholders enjoy priority access and clearance under the fast lane program. Still, Economy Class travelers can enjoy the suite after paying for the day’s pass.
  • Southwest Airlines allows passengers from Ontario International Airport (ONT) to Chicago to bring their furry friends into the cabin. Usually, these four-legged friends are household animals such as cats, dogs, and birds. The pets must bear their valid medical certificates and remember to lock them in their kernels throughout the trip.

Prefer to fly direct from Ontario to Chicago?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Ontario to Chicago.
Find which airlines fly direct from Ontario Airport to Chicago, which days they fly and book direct flights.

Direct departures

Ontario to Chicago

Monday

Southwest, United Airlines

Southwest, United Airlines

Tuesday

Southwest, United Airlines

Southwest, United Airlines

Wednesday

Southwest, United Airlines

Southwest, United Airlines

Thursday

Southwest, United Airlines

Southwest, United Airlines

Friday

Southwest, United Airlines

Southwest, United Airlines

Saturday

Southwest, United Airlines

Southwest, United Airlines

Sunday

Southwest, United Airlines

Southwest, United Airlines

See more direct flights

Direct returns

Chicago to Ontario

Monday

Southwest, United Airlines

Southwest, United Airlines

Tuesday

Southwest, United Airlines

Southwest, United Airlines

Wednesday

Southwest

Southwest

Thursday

Southwest, United Airlines

Southwest, United Airlines

Friday

Southwest, United Airlines

Southwest, United Airlines

Saturday

Southwest, United Airlines

Southwest, United Airlines

Sunday

Southwest, United Airlines

Southwest, United Airlines

See more direct flights

Reviews of the top 5 airlines serving from Ontario to Chicago

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Chicago. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ontario to Chicago? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4256 reviews
8.0Comfort
8.1Boarding
7.0Food
8.6Crew
7.5Entertainment
Airline reviews

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

8.0 ExcellentRussell, Dec 2025
SAN - OAK
Read more Southwest reviews

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

The lead steward kept singing about "San Francisco" and hotel California---more annoying than humorous....needs work. Flight was smooth and on time.

San Diego airport is brand new, spacious, airy and very smooth checkin at SW baggage drop.

It was rough. The staff was unprofessional, the choice of on board drinks terrible, it was cramped in space at every airport, they always ran out of overhead bin space so they pressured people to check bags for free or we couldn’t leave on the plane— so I did check my bag to help, and they nearly lost my bag. My bag did not arrive on the luggage belt, another man on my flight and I had to waste our time going to the baggage office to search for our bags. I would only fly southwest again if it was my last choice. Also, my flights were consistently delayed over and over again— at one point they straight up told us we were waiting for the pilot to arrive.

Crew could have been friendlier, maybe I'm spoiled by SW crews. In flight wifi was good. Would be nice to have more food offerings on a 4 plus hour flight

Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.

Sacrament staff are always polite and helpful. Airport is easy to maneuver and boarding is straightforward.

Excellent. Would encourage Southwest to keep current boarding procedures with free style seating. Makes for a fantastic experience

As always, the entire Southwest experience was wonderful, from online booking to flight to baggage retrieval. Very grateful.

The weather could have been better. There was a 40 minute ATC delay in SFO because of marine fog and a micro cell storm delayed landing and take-off at Nashville. The gate was changed 5 minutes from boarding from gate B3 to gate C23 at Nashville airport.

The flight was delayed for about 2 hrs. Other than it, it was good.

I am extremely disappointed that delta internal pilot manuals now refer to the Gulf of Mexico as the “gulf of America”. You can bow down to the Orange turd on your own. I will never fly delta again

No lunch on a x-country flight scheduled for 10:50 am departure, arrived 5+ hrs later. That requires a black box label before you pay for the tickets. Worst, when I checked in online, it's specifically said that lunch was served on his flight for economy Plus passengers.

Our flight from SFO to MSP was right on time on 11/15/2025. No delays. As we approached MSP at about 8 pm, we circled in the air until 8:40 pm so I don't call that efficient for MSP. I think the captain should announce the delay and why. (as if we all don't know that we are just circling around the area, slowing down, speeding up, slowing down.) Thank you. Marilyn Fischer

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

Delayed flight (1hour) plus a long layover after an overnight flight with no backup plane available.

Cramped seating for me. Luckily it wasn’t a long flight

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

My husband upgraded our seats and I don't know if it was due to the type of planet was or if they didn't upgrade our seats. We were supposed to be in I believe comfort seats and they were just as tight as any other seat- no leg room and we are very tall people but at least it wasn't extremely cold. My husband did put in a complaint about our seating because he paid extra and if we would have known that the space and the tightness would have been the same, we just would have gotten the emergency row emergency row seats that we normally get. We love Delta but both our flights coming home we're not good. Oh I forgot to mention that on our flight to Hawaii our luggage wheels got broke and we had to purse new luggage on vacation then we never had this problem so we didn't know protocol and reported it after we got home only for them to tell is we only had 24hrs to report the damage. Not sure what was going on with Delta this vacation trip.

They did the one thing that really matters - got to Chicago early.

The flight was on time. I generally don’t drink or eat on short flights and the seats were good and the flight attendants were friendly. That’s all I expect

It was nice to have gotten up upgraded to first class with a meal on a three hour flight

Very bad! They kept delaying my flight and wouldn’t do anything about it

Door to door, the crew and staff were amazing. It was a stressful travel day with delays, but they were focused on customers and doing what they could to get us to our destinations.

Flight was delayed only slightly before takeoff due to traffic control. However, the flight arrived early to ORD. Good flight. United has been very reliable for me.

Another delayed flight. When the delays exceed the duration of the flight, it’s a problem.

After boarding the plane in Chicago, the passengers were told that there was a technical problem with the plane. Passengers remained on the plane as they tried to fix the problem. After what was probably an hour passengers were told that there was a need to change planes as the problem was not solved. Passengers disembarked and boarded another plane. After taxing to the runway and waiting for takeoff, passengers were told that owing to the thunderstorm the flight was unable to take off but would try and reroute. After some time passengers were told there wasn't enough fuel for the new route and the plane had to return to the gate for additional fuel. after another log delay the flight got underway. On the plane there was food, drinks, ice or entertainment. We were a glass of water, which appeared rationed. Flight arrived about 5 hours late. The pilot was fantastic and communicated with the passengers throughout the ordeal.

Better WiFi. I cannot understand that in 2025, United is so behind on a technology that is now a necessity and still painfully unreliable, slow and keeps disconnecting.

Trip was great. A wild landing in Ottawa with the wind and rain, but the pilot did a great job. Always love flying United.👍

The boarding process needs to be fixed. The zone don't work, especially when there is hardly anyone in zones 3, 4,and 5, leaving the majority of the passengers backed up in the aisle, especially because passengers seated near the front are blocking passengers who are seated in the rear of the plane. It would also help if the size of carry on bags was more strictly enforced.

Awful. They won’t help me with anything. I booked on American but they abdicated to Iberia. The ticket was overpriced. Everything negative

I enjoyed the extra leg room compared to other airlines. The first stewards made my daughter’s birthday special by giving her an extra snack. Then the last one coming home from Chicago to Appleton made our night really enjoyable Thanks for making our trip enjoyable

It was good..clean, comfy seat. Friendly warm welcoming crew. Was able to check my cabin luggage at the gate which I was able to pickup in a decent time from baggage claim. The app gave all updates from delays to baggage claim info. Overall smooth flight.

It was a typical flight. We had a delay which seems to be the normality now. And we had no in flight service due to conditions.

After we landed we sat on the tarmac for 1.5 hours waiting to get to our gate. Ridiculous.

Terrible. Flight delayed for more than 8 hours with only a $12 meal voucher provided for the inconvenience. The airplane did not have breaks on arrival yet they still made us go through the motions and board on time knowing we could not take off then sit for 40+ minutes before having to get of the time. A complete waste of my time. I cannot believe they can stay business with these shenanigans. I’ll avoid this company like the plague moving forward as the lack of accountability is disgraceful.

This was the best 2 flights I have had with American out of SGF. Great crew both flights.

Excellent - explanations were clear staff was nice and flight was comfortable

Lost bag and 2 days no word leaving for cruise no clothes or stuff

When I wanted to check in 3 hours prior to boarding time, the employees mentioned “a little over an hour delay” so I waited for an hour then I went to go look for food in the terminal and most people from that flight were in the same area looking for food. Finally I decided after food to check to see if it’s anytime closer and now it’s 2 mins until boarding closes?! What are you kidding me? I didn’t receive anything via sms about boarding now nor via email or on the intercom. I luckily made it through, barely, and then there’s no room for my carry on mind you I’m in the very first row so I had to place my purse in one further row back and my carry on sections down. Not sure who pays for better seats to get your stuff placed all over the plane but that was the worst experience I’ve ever had flying with anyone.

The single worst check in experience I could imagine. I’ll never do any business with Frontier or any affiliated company

Too many extra fees, uncomfortable, little leg room. Will not recommend this airline.

This airline sucks. They offer low rates then charge you for everything, the app does not work well, the seats are the most uncomfortable. Maintenance issues on the flight, and you still have to sit through their credit card commercials. People are nice enough but does not make up for overall poor experience.

Severe turbulence. Captain never came on to reassure passengers after things settled down.

We were delayed three times ,and that destroyed my plans, and reservations

Cancelled flight after I arrived at airport after 75 min drive and parking. Next flight was 4 days in the future. Had to scramble and buy a much more expensive flight on another carrier.

I liked the turn-style feature at gate 209B at LAX. Very efficient process. The gate staff also made several, clearly directed announcements so I felt very informed.

The crew was delayed because they came on another flight that was delayed due to weather 10pm flight left at 1.30 am The airline made no effort to align alternate crew

The seats were awful, hard plastic covered in sheet vinyl. The airline tries to scam you into paying extra to get seat together when the flight wasn’t full. They were going to separate a family with young children but my wife who had a row to herself gave up her seat so the young mom could be with her young boys. I’m never giving this airline my money again.

Everything you need to know for your flight from Ontario to Chicago

Information on your arrival and departure airports