ONT - MDW

$118 Find Cheap Flights from Ontario to Chicago Midway Airport - Compare and Save

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 8/1. 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
$283
Typical prices: $223-$476
Southwest
Thu 9/3Sat 9/5
ONT - MDW • 2 stops
Cheapest non-stop
$323
Southwest
Wed 9/2Sat 9/5
ONT - MDW • Non-stop
Top airlines
Cheapest • from $283 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
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 17m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 50% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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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

Thu, Sep 3 - Sat, Sep 5
Southwest Logo
12:50 pm - 11:20 pm
ONT
-
MDW
8h 30m
2 stops
Southwest Logo
6:00 pm - 8:10 pm
MDW
-
ONT
4h 10mnonstop
$283Southwest
Sun, Aug 2 - Thu, Aug 6
Frontier Logo
8:17 am - 8:32 pm
ONT
-
MDW
10h 15m
1 stop
Frontier Logo
9:27 pm - 8:41 am
MDW
-
ONT
13h 14m
1 stop
$284Frontier
Wed, Aug 26 - Thu, Aug 27
Southwest Logo
6:40 am - 5:10 pm
ONT
-
MDW
8h 30m
2 stops
Southwest Logo
8:00 am - 3:05 pm
MDW
-
ONT
9h 05m
2 stops
$285Southwest
Fri, Aug 21 - Mon, Aug 24
Frontier Logo
8:17 am - 8:31 pm
ONT
-
MDW
10h 14m
1 stop
Frontier Logo
9:26 pm - 8:36 am
MDW
-
ONT
13h 10m
1 stop
$286Frontier
Wed, Sep 9 - Thu, Sep 17
Delta Logo
12:17 pm - 10:45 pm
ONT
-
MDW
8h 28m
1 stop
Delta Logo
5:11 pm - 10:26 pm
MDW
-
ONT
7h 15m
1 stop
$288Delta
Thu, Sep 24 - Mon, Sep 28
Southwest Logo
12:50 pm - 11:20 pm
ONT
-
MDW
8h 30m
1 stop
Southwest Logo
5:40 am - 9:20 am
MDW
-
ONT
5h 40m
1 stop
$290Southwest
Thu, Sep 3 - Sat, Sep 5
Southwest Logo
12:50 pm - 11:20 pm
ONT
-
MDW
8h 30m
1 stop
Southwest Logo
7:55 am - 2:30 pm
MDW
-
ONT
8h 35m
2 stops
$293Southwest
Thu, Sep 24 - Mon, Sep 28
Southwest Logo
12:50 pm - 11:20 pm
ONT
-
MDW
8h 30m
2 stops
Southwest Logo
6:15 pm - 10:05 pm
MDW
-
ONT
5h 50m
1 stop
$296Southwest
Thu, Nov 12 - Mon, Nov 16
Southwest Logo
11:55 pm - 5:40 am
ONT
-
MDW
3h 45mnonstop
Southwest Logo
4:00 pm - 6:15 pm
MDW
-
ONT
4h 15mnonstop
$297Southwest
Tue, Sep 22 - Mon, Sep 28
Delta Logo
6:00 pm - 9:07 am
ONT
-
MDW
13h 07m
2 stops
Delta Logo
2:00 pm - 11:47 pm
MDW
-
ONT
11h 47m
2 stops
$298Delta
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 September.

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 Tuesday and more expensive on a Friday. On your return trip to Ontario, you should consider flying back on a Wednesday, 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 $241 (return) on average. On the other hand, the most expensive months are May and January, where the average cost of round-trip tickets is $730 and $721 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 1 stop layover the cheapest option at $483 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$118
Best time to beat the crowds but there is an average 7% increase in price.
Most popular time to fly with an average 20% 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 5 days, the lowest price for a flight from Ontario to Chicago Midway Airport was $118 for a one-way ticket and $283 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?

    JetBlue, Alaska Airlines, Hawaiian Airlines, American Airlines, and Delta 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 $519 and an overall rating of 7.9, Southwest is the most popular choice. Frontier is also a great choice for the route, with an average price of $258 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 $263 or less one-way and $427 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.
7.9
SouthwestOverall score based on 4246 reviews
8.0Comfort
8.6Crew
7.5Entertainment
7.0Food
8.1Boarding
Airline reviews

Flight was delayed over 3 hours. Planes were dirty. Staff indifferent. And they serve vegan pretzels as snacks.

2.0 MediocreMatthew, Jun 2026
CVG - MDW
Read more Southwest reviews

Flight was delayed over 3 hours. Planes were dirty. Staff indifferent. And they serve vegan pretzels as snacks.

The flight was smooth. The Southwest experience has degraded overall, but this one was okay.

The checking experience in Orlando was terrible, almost missed the flight. Too many travelers and Southwest completely understaffed.

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

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.

WiFi was not working and didn’t have a beverage service

Flight was ok. Boarding wasn’t fun. Flights were delayed by 12 minutes on each leg.

Wifi didn’t work, no service, seats are hard as rocks

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

The flight itself was ok and the pilot was very communicative. However, our flight was delayed for almost 3 hours, the gate was changed 3 times and there was no communication as we were waiting. The flight staff was overall a little crabby...I understand as they probably had a long day but we all did.

After waiting several minutes to be acknowledged by 3 employees on their phones, was told we had missed our flight because the doors were closed at that literal moment. Had they given any actual service or help while we were standing there we would have been on with time to spare. More than 10 people were turned away in this fashion claiming there was no way they could let us on the plane, even though it was still sitting connected to the terminal. After the desk agents let us know they didn't care about the situation we were forced to pay more than twice the price of our original tickets as no credits were given for the price of the "missed" flight. And the icing on the cake was after being treated poorly, fleeced for another few hundred dollars for new tickets? We waited on the next plane for 25 minutes passed the "doors closed" time, letting almost an extra dozen passengers on board. You're company has lazy, disinterested employees and your lack of any real help will ensure this was the first and last time we fly Frontier. Awful.

The takeoff was the smoothest I've ever experienced on any airline and this is the first time I've flown on frontier so this was an extremely pleasant surprise!

A lady asked to stop the flight after the tunnel pulled away and we began to depart a flight that was already hours late. The attendance respectfully stopped the the plane and had the tunnel return. After the tunnel returned the passenger claimed to have changed her mind . The tunnel was then put in reverse and the passenger remained on the plane .. They should have sent the sick passenger off the plane like initially replaced. They existed a couple off the plane prior to that situation.. So.. all and all.. it was a long and flight.. .

terrible cascading delays and unhelpful customer service. uncomfortable plane. crew was great, however!

We understand and comply with Frontier’s bag sizes. We’ve had some problems in past while having to await other passengers who do not understand the baggage restrictions or have not prepaid and that is usually our biggest concern (others delaying us) with flying Frontier. Flying OUT of ONT, however, has always been a great experience. I’ve also noted even on delayed Frontier flights very knowledgeable pilots who manage expectations well.

The trip was unremarkable which is good. Crew was very professional and courteous.

I was singled out for being a Latina flying solo and the attendants took me out of line to put my luggage in the personal item bin to see if it would fly. Keep In mind I had just flown with the same luggage with no problem not even 5 days ago. The tag was sticking out a bit and the attendant was belligerent about charging me $100. I could not refuse because I didn’t wanna cause a scene. But today I felt targeted and embarrassed. I went online and found out that this happens a lot with this airline and to many minority women.

Nothing I missed my first flight because my boarding pass said one thing and another passenger on the same flight said another. I didn’t get notified of a gate change until 8:39 pm which was one minute before the flight departed at 8:40pm when we explained this to gate agent Dorsey prior to the flight departing she was extremely short and had nasty attitude. Some of the passengers in my party including myself needed to catch that flight due work the next which included presentations and court litigation. We were deeply saddened and frustrated how Frontier handled this situation. We were told that the flight was over booked by 19 seats and they constantly change gates to make people miss their flight. If that is true I will ensure there will be a class action lawsuit against frontier airlines.

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

Information on your arrival and departure airports