Title: CA $243 Cheap Flights from Ontario (ONT) to Chicago (MDW) - Expedia.ca ![City of Chicago. Image of Chicago downtown and Chicago River with bridges at sunny summer day](https://images.trvl-media.com/place/178248/e6aa83ce-7ad8-43a5-9d1d-b055eefa7e78.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/178248/e6aa83ce-7ad8-43a5-9d1d-b055eefa7e78.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # CA $243 Cheap Flights from Ontario (ONT) to Chicago (MDW) [View CA $243 flight on Mon, Feb 2, 2026](https://expedia.ca/Flights-Search?trip=oneway&leg1=from:ONT,to:MDW,departure:02/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:242.50&airProductToken=AQqoAQo2CMSYARIENDAzMRiumwEgkgEogJCEAzC0kYQDOEVAAFgBaglNQUlOQkFTSUNyCFhBVlNBMEJECjUIxJgBEgM4MTAYkgEg47QBKKmThAMwsJWEAzhFQAFYAWoJTUFJTkJBU0lDcghWQVZTQTBCRAo3CMSYARIEMzg1OBjjtAEg7LABKKWWhAMw-paEAzhFQAFYAWoJTUFJTkJBU0lDcghWQVZTQTBCRBIKCAEQARgBKgJETBgBIgQIARABKAIoAygEMAE) - [Roundtrip](?flightType=roundtrip) - [One-way](?flightType=oneway) - [Multi-city](?flightType=multicity) ### Travellers Adults ChildrenAges 2 to 17 InfantsYounger than 2 EconomyPremium economyBusiness classFirst class Leaving from Going to Departing Returning Add a place to stay Add a car Direct flights only ## Popular airlines from Los Angeles - Ontario Intl. Airport (ONT) to Chicago Midway Airport (MDW) - ![Southwest Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_WN.svg) Southwest Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:ont,to:mdw,departure:01/11/2025TANYT&leg2=from:mdw,to:ont,departure:08/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"WN"}}]) - ![Delta](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_DL.svg) Delta [](https://www.expedia.ca/Flights-Search?leg1=from:ont,to:mdw,departure:01/11/2025TANYT&leg2=from:mdw,to:ont,departure:08/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) - ![Frontier Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_F9.svg) Frontier Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:ont,to:mdw,departure:01/11/2025TANYT&leg2=from:mdw,to:ont,departure:08/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"F9"}}]) ![notification illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__notification.svg) ### Be in the know Get alerts if flight prices drop or rise\* ![deals illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 30% on select hotels after you book a flight\* ![trophy illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our rewards [Sign in](https://www.expedia.ca/login) ## Cheap flights from Ontario (ONT) to Chicago (MDW) Prices were available within the past 7 days and start at CA $243 for one-way flights and CA $839 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Sat, Nov 1 - Mon, Nov 3 ONT Ontario MDW Chicago CA $839 Roundtrip found 3 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:ONT,to:MDW,departure:01/11/2025TANYT&leg2=from:MDW,to:ONT,departure:03/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:838.60&airProductToken=AQpvCjUIxJgBEgM2NjUYrpsBIOBcKJz3-wIwmfn7AjhFQABYAWoJTUFJTkJBU0lDcghWQVVOQTBCQwo2CMSYARIEMTA3NhjgXCDssAEosPr7AjCi-_sCOEVAAVgBaglNQUlOQkFTSUNyCFZBVU5BMEJDCm8KNgjEmAESBDIwNjAY7LABIOBcKO2P_AIw5pD8AjhFQABYAWoJTUFJTkJBU0lDcghWQVVOQTBCQwo1CMSYARIDNzc5GOBcIK6bASiRkfwCMJ6T_AI4RUABWAFqCU1BSU5CQVNJQ3IIVkFVTkEwQkMSCggBEAEYASoCREwYASIECAEQASgCKAMoBDAB) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Sat, Nov 1 - Mon, Nov 3 ONT Ontario MDW Chicago CA $965 Roundtrip found 3 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:ONT,to:MDW,departure:01/11/2025TANYT&leg2=from:MDW,to:ONT,departure:03/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:964.40&airProductToken=AQpvCjUIxJgBEgM2NjUYrpsBIOBcKJz3-wIwmfn7AjhWQABYAWoJTUFJTkNMQVNDcghWQVVOQTBNRQo2CMSYARIEMTA3NhjgXCDssAEosPr7AjCi-_sCOFZAAVgBaglNQUlOQ0xBU0NyCFZBVU5BME1FCm8KNgjEmAESBDIwNjAY7LABIOBcKO2P_AIw5pD8AjhWQABYAWoJTUFJTkNMQVNDcghWQVVOQTBNRQo1CMSYARIDNzc5GOBcIK6bASiRkfwCMJ6T_AI4VkABWAFqCU1BSU5DTEFTQ3IIVkFVTkEwTUUSCggBEAEYASoCREwYASIECAEQASgCKAMoBDAB) ## Find the cheapest month to fly from Ontario (ONT) to Chicago (MDW) ### February is typically the cheapest month to fly From CA $164 - CA $805 per traveller. ## Alternative airports near Chicago Prices were available within the past 7 days. Prices and availability are subject to change. [](https://www.expedia.ca/Flights-Search?leg1=from:ONT,to:ORD,departure:01/11/2025TANYT&leg2=from:ORD,to:ONT,departure:03/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) ORD O'Hare Intl. Cheapest 23 min [Flights from CA $838](https://www.expedia.ca/Flights-Search?leg1=from:ONT,to:ORD,departure:01/11/2025TANYT&leg2=from:ORD,to:ONT,departure:03/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) ## Frequently asked questions ### How much is a flight from ONT to Midway Intl. Airport (MDW)? > Based on airfares listed within the last 7 days on Expedia for flights departing within the next year, round-trip flights between Ontario Airport and MDW start from CA $839. Make your booking today to score the best price for your journey. Prices and availability are subject to change. Additional terms apply. ### Do I need to pay a cancellation fee if I cancel my flight from ONT to Chicago Airport? > We understand that things come up unexpectedly, so we've made it as simple as possible for you to cancel your trip online. Just visit the [Customer Service Portal](https://www.expedia.ca/helpcenter) and follow the instructions. ### How do I find cheap flights from ONT to Midway Intl. Airport (MDW) that have flexible change policies? > Plenty of carriers offer the option to reschedule your flight without charging a fee. All you pay is the fare difference. When looking for ONT to Chicago Airport flights, you'll see a "No change fees" box for you to pick. ### How many hours is the flight from Ontario Airport to Chicago Airport? > Consider bringing your own on-board entertainment (like some downloaded podcasts), as it takes approximately 5 hours and 14 minutes to jet to Chicago Airport from Los Angeles - Ontario Intl. Airport (ONT). A good pair of noise-cancelling headphones will also be useful. ### How far is the flight from Ontario Airport to Chicago Airport? > The flight distance between ONT and Chicago Airport is 2,700 kilometres. Listen to your favourite tunes or bury your nose in a book and the trip will fly by. ### Which airlines fly direct from Ontario Airport to Midway Airport? > Southwest Airlines (WN) will get you from ONT to Midway Airport comfortably and reliably. Choose from 26 flights every month along this route. ### Are ONT to Midway Intl. Airport (MDW) flight tickets cheaper when they're purchased at the last minute? > Late planners can occasionally pick up a bargain, with some super cheap fares from Ontario Airport to MDW surfacing a few weeks before the date of departure. If you'd rather plan ahead, Expedia compares and updates the best flight deals regularly — as early as 12 months in advance in some cases. It depends on the carrier though, as not all airlines publish prices that far in advance. ## Travel information | Origin airport | Los Angeles - Ontario Intl. | | --- | --- | | Destination airport | Midway Intl. | | Roundtrip price | CA $839 | | Distance | 2723 km | | Average flight time | 3 hours 50 mins | ## Book with confidence ### Los Angeles to Chicago Flights **The easy way to book your flights from Ontario to Chicago**  With Expedia, it’s simple to find and book flights to Chicago from Ontario whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to Midway Intl., too.   Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Ontario to Chicago today, tomorrow, or this week.   **Save dollars with cheap flights from Los Angeles - Ontario Intl., ONT to Midway Intl., MDW**  Sort your search results by price to find great deals on your flight from Ontario to Chicago—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Chicago from Ontario currently is just CA $839 rising to CA $965.   Here are more money-saving tips:  - Fly in November when flight prices are normally at their lowest  - Book about a month to 6 weeks before you travel for the best prices to Chicago   - Avoid peak season and weekends when flights can cost more - Early morning and late-night flights are sometimes cheaper, so try varying your travel times  - One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free!  **Reasons to choose Expedia for your flight to Chicago from Ontario**  Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. 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