ONT - MDW

$91 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 1/15. 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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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$182
Overall average: $598
Frontier
Mon 1/12Thu 1/15
ONT - MDW • 1 stop
Cheapest non-stop
$419
Southwest
Thu 2/12Mon 2/16
ONT - MDW • Non-stop
Our travelers' advice
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
When to book
2 weeks
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 38% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
December
Cheapest • 38% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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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

Mon, Jan 12 - Thu, Jan 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
Mon, Jan 12 - Sun, Jan 18
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
$217Frontier
Thu, Jan 15 - Sun, Jan 18
Frontier Logo
8:02 am - 5:20 pm
ONT
-
MDW
7h 18m1 stop
Frontier Logo
11:05 am - 7:01 pm
MDW
-
ONT
9h 56m1 stop
$218Frontier
Thu, Jan 15 - Mon, Jan 19
Frontier Logo
10:18 pm - 11:47 pm
ONT
-
MDW
23h 29m2 stops
Frontier Logo
9:09 pm - 3:07 pm
MDW
-
ONT
19h 58m1 stop
$235Frontier
Fri, Jan 16 - Mon, Jan 19
Frontier Logo
6:10 am - 7:54 pm
ONT
-
MDW
11h 44m1 stop
Frontier Logo
9:09 pm - 3:07 pm
MDW
-
ONT
19h 58m1 stop
$236Frontier
Thu, Jan 15 - Mon, Jan 19
Frontier Logo
8:02 am - 5:20 pm
ONT
-
MDW
7h 18m1 stop
Frontier Logo
9:09 pm - 3:07 pm
MDW
-
ONT
19h 58m1 stop
$245Frontier
Fri, Jan 16 - Sun, Jan 18
Frontier Logo
6:10 am - 7:54 pm
ONT
-
MDW
11h 44m1 stop
Frontier Logo
11:05 am - 7:01 pm
MDW
-
ONT
9h 56m1 stop
$253Frontier
Sun, Feb 15 - Sat, Feb 21
Frontier Logo
10:18 pm - 11:44 pm
ONT
-
MDW
23h 26m2 stops
Frontier Logo
9:15 am - 2:29 pm
MDW
-
ONT
31h 14m1 stop
$264Frontier
Fri, Jan 16 - Mon, Jan 19
Frontier Logo
6:10 am - 7:54 pm
ONT
-
MDW
11h 44m1 stop
Frontier Logo
9:09 pm - 3:07 pm
MDW
-
ONT
19h 58m1 stop
$268Frontier
Thu, Feb 5 - Sun, Feb 8
Frontier Logo
2:06 pm - 3:49 pm
ONT
-
MDW
23h 43m1 stop
Frontier Logo
7:30 am - 7:32 pm
MDW
-
ONT
14h 02m2 stops
$273Frontier
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.

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 Wednesday and more expensive on a Sunday. On your return trip to Ontario, you should consider flying back on a Sunday, and avoid Tuesdays 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 November and January, where the average cost of round-trip tickets is $616 and $598 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 $474 on average.

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

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 Midway Airport, 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 Midway Airport, you should book around 2 weeks before departure, which saves you about 38% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

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.
Airports
ONT

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

MDW

The CTA Orange Line offers a direct train from MDW to downtown Chicago, taking about 25-30 minutes, perfect for quick city access.

Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on 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
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 seasonNovember
Cheapest flight$91
Best time to beat the crowds but there is an average 57% increase in price.
Most popular time to fly and prices are also 3% lower on average.
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 $91 for a one-way ticket and $182 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, Delta, Hawaiian Airlines, American Airlines, and Alaska 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 Airbus A321neo 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?

    You can catch a nonstop flight from Ontario to Chicago Midway Airport on Monday, Tuesday, Wednesday, Thursday, Friday, and Sunday.

  • 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 $401 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 $233 and an overall rating of 5.7.

  • 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 $188 or less one-way and $352 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 4250 reviews
7.5Entertainment
8.0Comfort
8.6Crew
8.1Boarding
7.0Food
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.

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 Midway

Information on your arrival and departure airports