ONT - MDW

$100 Find Cheap Flights from Ontario to Chicago Midway Airport

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 Midway departing on 6/2. 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 Midway Airport

 
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
$277
Typical prices: $465-$251
Delta
Sat 8/15Tue 8/18
ONT - MDW • 1 stop
Cheapest non-stop
$287
Southwest
Thu 9/10Mon 9/14
ONT - MDW • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
ONT offers streamlined security with short wait times.
The CTA Orange Line provides direct train access to downtown.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Cheapest • from $277 (round-trip)
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
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Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with Southwest. Average duration is 3h 45m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top layover airports
Cheapest • Avg $359 (round-trip)
Shortest trip • 5h 30m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 47% price drop
Most popular
Good to know
Good to know
+1
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Good to know
Good to know
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Midway!
Flight Deals
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Expert advice
Flight Deals

Cheap Flights from Ontario to Midway (ONT-MDW)

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

Sat, Aug 15 - Tue, Aug 18
Delta Logo
12:32 pm - 10:36 pm
ONT
-
MDW
8h 04m
1 stop
Delta Logo
1:27 pm - 11:34 pm
MDW
-
ONT
12h 07m
2 stops
$277Delta
Tue, Sep 8 - Sat, Sep 12
Delta Logo
12:00 pm - 9:46 pm
ONT
-
MDW
7h 46m
1 stop
Delta Logo
6:00 am - 11:04 am
MDW
-
ONT
7h 04m
1 stop
$282Delta
Mon, Jun 1 - Wed, Jun 10
Southwest Logo
11:55 pm - 5:40 am
ONT
-
MDW
3h 45mnonstop
Southwest Logo
5:30 am - 9:35 am
MDW
-
ONT
6h 05m
1 stop
$283Southwest
Tue, Sep 8 - Thu, Sep 17
Delta Logo
6:00 am - 6:05 pm
ONT
-
MDW
10h 05m
2 stops
Delta Logo
6:00 am - 11:04 am
MDW
-
ONT
7h 04m
1 stop
$287Delta
Sat, Aug 22 - Tue, Aug 25
Delta Logo
6:00 am - 6:01 pm
ONT
-
MDW
10h 01m
2 stops
Delta Logo
12:46 pm - 11:34 pm
MDW
-
ONT
12h 48m
2 stops
$292Delta
Mon, Jun 1 - Wed, Jun 10
Southwest Logo
8:45 pm - 5:45 am
ONT
-
MDW
7h 00m
1 stop
Southwest Logo
5:30 am - 9:35 am
MDW
-
ONT
6h 05m
1 stop
$293Southwest
Wed, Jun 24 - Wed, Jul 1
Southwest Logo
1:30 pm - 11:05 pm
ONT
-
MDW
7h 35m
1 stop
Southwest Logo
5:25 am - 9:15 am
MDW
-
ONT
5h 50m
1 stop
$294Southwest
Mon, Jun 1 - Thu, Jun 4
Southwest Logo
11:55 pm - 5:40 am
ONT
-
MDW
3h 45mnonstop
Southwest Logo
5:20 am - 9:05 am
MDW
-
ONT
5h 45m
1 stop
$297Southwest
Tue, Aug 25 - Wed, Sep 2
Delta Logo
7:05 am - 4:15 pm
ONT
-
MDW
7h 10m
1 stop
Delta Logo
6:00 am - 11:04 am
MDW
-
ONT
7h 04m
1 stop
$298Delta
Wed, Jun 24 - Wed, Jul 1
Southwest Logo
5:15 am - 2:35 pm
ONT
-
MDW
7h 20m
2 stops
Southwest Logo
5:25 am - 9:15 am
MDW
-
ONT
5h 50m
1 stop
$299Southwest
Booking Insights

KAYAK's insights & trends for Ontario to Midway flights

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

How much is a round-trip flight from Ontario to Chicago Midway Airport?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Ontario to Chicago Midway Airport departing in August.

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

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

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Chicago Midway Airport, 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 Midway Airport is December, where tickets cost $232 (return) on average. On the other hand, the most expensive months are November and May, where the average cost of round-trip tickets is $616 and $594 respectively.

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

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 2 stops layover the cheapest option at $523 on average.

Expert advice

Expert advice for your flight from Ontario to Midway

 
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.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on MDW

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.

Jennifer Simonson

Jennifer Simonson

Expert on ONT

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.

Good to know

Low seasonFebruary
Cheapest flight$100
Best time to beat the crowds but there is an average 17% increase in price.
Most popular time to fly with an average 12% increase in price.
Flight from Ontario to Chicago Midway Airport

When to book flights from Ontario to Midway

Are your dates flexible? Find out the best times to travel from Ontario to Midway 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 Ontario to Chicago Midway Airport flights

  • What is the baggage allowance on Delta flights from Ontario to Chicago Midway Airport?

    The baggage allowance for Delta flights from Ontario to Chicago Midway Airport depends on several factors such as the ticket type and frequent flyer status. Passengers are allowed to bring one carry-on bag and one personal item free of charge. For checked baggage, passengers are permitted to check up to 10 bags on flights operated by Delta. The weight of each checked bag must not exceed 50 lbs for economy and 70 lbs for Delta One.

  • What class seat options are available on Frontier flights from Ontario to Chicago Midway Airport?

    Frontier Airlines does not offer traditional seating classes such as Economy or Business Class. All seats on Frontier flights from Ontario to Chicago Midway Airport are standard economy seats with the option to select and pay for seating based on personal preferences. Frontier has a Green Class which is a sustainable seat upgrade providing travelers with a carbon offset that supports projects that reduce emissions.

  • What services are offered to passengers with reduced mobility on Southwest Airlines flights from Ontario to Chicago Midway Airport?

    Southwest Airlines provides several services and assistance to passengers with reduced mobility on flights from Ontario to Chicago Midway Airport. The airline allows passengers to travel with wheelchairs or other assistive devices at no extra charge. Southwest Airlines can also provide seating arrangements based on the needs of passengers with reduced mobility.

  • How do I get from Chicago Midway Airport to the city center?

    There are several transportation options available for getting from MDW to the city center. The CTA Orange Line train provides service from MDW to downtown Chicago and takes about 27 minutes on average. Taxis are also readily available at MDW, and the ride to the city center takes approximately 20-30 minutes. Uber and Lyft are available as an alternative to traditional taxis, with ride times and costs similar to taking a taxi. Taking the CTA Orange Line train usually takes around 27 minutes, while taxi and rideshare rides can take between 20-30 minutes, depending on traffic.

  • What is the cheapest flight from Ontario to Chicago Midway Airport?

    In the last 3 days, the lowest price for a flight from Ontario to Chicago Midway Airport was $100 for a one-way ticket and $277 for a round-trip.

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

    A passport is not required to fly from Ontario to Chicago Midway Airport.

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

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

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

    The Boeing 737 MAX 8 is the aircraft model that flies most regularly on the Ontario to Chicago Midway Airport flight route.

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

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

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

    The two airlines most popular with KAYAK users for flights from Ontario to Chicago are Southwest and Frontier. With an average price for the route of $526 and an overall rating of 8.0, Southwest is the most popular choice. Frontier is also a great choice for the route, with an average price of $257 and an overall rating of 5.6.

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

    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 Midway Airport.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Chicago Midway Airport 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 Midway Airport?

    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 Midway Airport with an airline and back to Ontario with another airline. Booking your flights between Ontario and MDW can sometimes prove cheaper using this method.

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

    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 Midway Airport 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 Midway Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for $210 or less one-way and $438 or less round-trip.
  • Delta has made a commitment to invest $1 billion over the next decade to reduce its carbon footprint and become carbon neutral. A significant portion of this investment will go toward purchasing SAF including flights from Ontario (ONT) to Chicago Midway Airport (MDW).
  • Southwest Airlines allows cats and dogs to travel with passengers in the cabin under the seat in front of them including for flights from Ontario (ONT) to Chicago Midway Airport (MDW).
  • United Airlines allows children under 12 to sit next to an accompanying adult for no additional charge on flights from Ontario (ONT) to Chicago Midway Airport (MDW). This policy applies to all United flights and seat categories, including Basic Economy. Families traveling with children will also be allowed to pre-board.
  • Connecting flights from Ontario (ONT) to Chicago Midway Airport (MDW) have layovers in different cities depending on the airline. Some common layovers for this route include Atlanta (ATL), Denver (DEN), Las Vegas (LAS), Dallas (DFW), and Phoenix (PHX).
  • Ontario Airport (ONT) has two major passenger terminals, Terminal 2 and Terminal 4. Terminal 4 serves domestic flights like flights from Ontario to Chicago Midway Airport and is located on the west side of the airport.

Prefer to fly direct from Ontario to Chicago Midway Airport?

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

Direct departures

Ontario to Chicago Midway

Monday

Southwest

Southwest

Tuesday

Southwest

Southwest

Wednesday

Southwest

Southwest

Thursday

Southwest

Southwest

Friday

Southwest

Southwest

Saturday

Southwest

Southwest

Sunday

Southwest

Southwest

See more direct flights

Direct returns

Chicago Midway to Ontario

Monday

Southwest

Southwest

Tuesday

Southwest

Southwest

Wednesday

Southwest

Southwest

Thursday

Southwest

Southwest

Friday

Southwest

Southwest

Saturday

Southwest

Southwest

Sunday

Southwest

Southwest

See more direct flights

Reviews of the top airlines flying from Ontario to Midway

 
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 Midway? 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 4295 reviews
8.1Boarding
8.6Crew
7.5Entertainment
8.0Comfort
7.0Food
Airline reviews

The entire experience from boarding to landing was amazing! The crew were very friendly. Will definitely be back.

10.0 Excellentlarry, Apr 2026
LGB - PHX
Read more Southwest reviews

The entire experience from boarding to landing was amazing! The crew were very friendly. Will definitely be back.

no service at all due to turbulence. they should've at least given us snacks, there were only 10 people on the entire flight.

Delayed flight, lack of information, boarding process is a mess as is the carryon luggage causing issues when leaving the plane….just a poor experience.

Comfortable. Easy. No problems. Just wish they had gf options for snacks.

The crew was very kind and made going to Hawaii relaxing and fun to look forward to! Thank you Southwest for a pleasant flight!

For the first time in a long time, the Wi-Fi actually worked the entire flight! The flight crew was amazing as usual.

Great flight. I didn't get a drink because I was asleep whole on the flight.

Terrible. Even though there’s assigned seating now, they are still the slowest boarding airline of anyone.

It was good from LAX to Phoenix, But the connection in Phoenix to Tulsa was not that great. The staff on both flights were great. The choice of free entertainment was ok nothing to brag about. The 45 min delay because of some electrical issue wasn't great from Phoenix to Tulsa. We sat there with hardly any air, The seat I had was between windows so the side of the plane pushed in on you. My being a bigger man it then made the seating area uncomfortable. The seats on the plane had no power to connect to recharge your phone or anything. I would recommend that they should look into a slot or clamp to hold your phone to enjoy while watching the entertainment choices hands-free. Also make it possible to raise the inner seat by the window be able to raise the arm rest up to make more room for larger people to set more comfortably. I would also say other then that stop price gouging the airfare or nickel and diming everything. Not fair for people having to fly for emergencies and be paying for higher prices due to the season or holidays. Your making your money either way and the cost of flying is still going to be the same regardless if there's 100 people or 200 people.

Love them will get a Southwest card to track my points and keep flying with them. My family and I were pleased with the services.

Flight was scheduled at 9:40pm. Got delayed to 10 am, the next day. crazy

The bag check, flight check-in, and onboard experience convinced my wife and me that we will actively go out of our way to avoid flying Frontier Airlines in the future. At bag check, we were informed that check-in could only be completed via the Frontier mobile app. Unfortunately, the app was extremely frustrating—sending us through repetitive, confusing loops that repeatedly forced us to decline add-on services with nearly every click. While most airline apps upsell, this one felt intentionally exhausting. As the process dragged on, we became genuinely concerned that my phone battery would die before check-in could be completed. We approached the bag check staff—who were standing together talking—and explained both our frustration and our predicament. They laughed. Later, my wife described the interaction as “gaslighting,” which felt accurate. We were then informed it would cost $25 per person simply to have our boarding passes printed. From that point forward, the tone of the experience was consistently hostile. The bag check employees were condescending and combative, behaving more like bullies than customer service staff. Unfortunately, that same attitude continued onboard. One flight attendant argued with me when I attempted to stow my backpack in the overhead bin. I explained that we had each paid $75 to check our bags specifically so we would not need to use carry-on space and could have adequate legroom. She demanded to see my ticket, pointed out that it said “no carry-on”—which I acknowledged—and I reiterated that this was precisely why we paid to check our bags. Her response was, “I don’t make the rules.” She then walked away, but not before asking if I “truly wanted to fly back to Chicago today?”—an unnecessary and unmistakable threat. It is also worth noting that despite booking our tickets together in the same transaction, we were not seated together. Upon our return to Chicago—where we could once again sit together—we compared onboard experiences. We both remarked on how unhappy the flight attendants appeared and how each of us was separately asked whether we would like to purchase a beverage. We declined. At no point was water mentioned as an option, leaving us with the clear impression that even water came at a cost—or that complimentary water, if available at all, was deliberately left unmentioned. Overall, the experience was shocking and deeply disappointing, but it was also a profound learning experience—one we will not forget and will not repeat. -Steve

They didn’t offer a water, even after I asked

Remind customers of the need to have passport or new ID for boarding.

The flight never took off and we spent 7 hours at the airport

Good for a budget airline! It was easy to get on, staff was really nice. Can’t say anything about the food or entertainment because it wasn’t available, which is fine.

It was ok. It was expensive to check 2 bags ($75.00 per bag), and then it took a long time to wait for shuttle to take us from one terminal to the terminal where the plane was taking off at LAX. And all of this for a flight where we had to pay for any food or drink that was not water.

This company socks. It's fraud. They canceled our flight yesterday, and today we were late because of a really long line at the check in bag. At the rebook station, there was ton of people. The workers were all rude. I am gonna make a report to FTC.

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

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

Information on your arrival and departure airports