HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$75+ Cheap flights from Midway (MDW) to Ontario (ONT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/17. Fares are subject to change and may not be available on all flights or dates of travel.
MDW — ONT
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Midway to Ontario with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Midway to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Midway (MDW) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 14, 2025.

Round-trip from

$150
(CheapOair)

One-way from

$75
(Mytrip)

Popular in

June

Cheapest in

January

Average price

$377

Good round-trip deal

$337 or less

Good one-way deal

$279 or less
From Chicago Midway to Ontario
Search Deals
One-way flight from Chicago Midway to Ontario
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($51 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2025
Search Deals
Price to beat on a round-trip flight from Chicago Midway to Ontario.
Search Deals
Price to beat on a one-way flight from Chicago Midway to Ontario.
Search Deals

Find flight deals from Midway to Ontario

Cheapest flights from Midway to Ontario
Explore the most affordable flight options available from Midway to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

This CheapOair deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/96:24 pmMDW - ONT
1 stop7h 26mFrontier
Sun 10/126:53 amONT - MDW
1 stop24h 38mFrontier
Deal found 8/14$150
This Booking.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/193:48 pmMDW - ONT
1 stop6h 06mFrontier
Sun 9/218:59 pmONT - MDW
1 stop16h 54mFrontier
Deal found 8/14$151
This Mytrip deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1810:13 amMDW - ONT
1 stop7h 16mFrontier
Sun 9/213:43 pmONT - MDW
1 stop22h 10mFrontier
Deal found 8/14$154
This Mytrip deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/56:30 amMDW - ONT
1 stop14h 05mFrontier
Thu 10/166:53 amONT - MDW
1 stop15h 43mFrontier
Deal found 8/14$156
This Mytrip deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2510:13 amMDW - ONT
1 stop7h 16mFrontier
Fri 10/312:13 pmONT - MDW
1 stop6h 39mFrontier
Deal found 8/14$158
This Mytrip deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/76:30 amMDW - ONT
1 stop14h 05mFrontier
Mon 9/812:13 pmONT - MDW
1 stop6h 39mFrontier
Deal found 8/14$160
This Frontier deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/176:24 pmMDW - ONT
1 stop7h 26mFrontier
Mon 10/208:34 amONT - MDW
1 stop12h 46mFrontier
Deal found 8/14$164
This FlightHub deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/911:21 amMDW - ONT
1 stop22h 08mFrontier
Thu 11/1312:05 pmONT - MDW
1 stop21h 25mFrontier
Deal found 8/14$171
This FlightHub deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/712:30 pmMDW - ONT
1 stop13h 20mFrontier
Sun 11/91:46 pmONT - MDW
1 stop20h 51mFrontier
Deal found 8/14$173
This CheapOair deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/256:31 pmMDW - ONT
1 stop7h 19mFrontier
Fri 9/512:13 pmONT - MDW
1 stop6h 39mFrontier
Deal found 8/14$180
This CheapOair deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/410:13 amMDW - ONT
1 stop7h 16mFrontier
Fri 9/1212:13 pmONT - MDW
1 stop6h 39mFrontier
Deal found 8/13$191
This CheapOair deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1110:13 amMDW - ONT
1 stop7h 16mFrontier
Thu 9/183:43 pmONT - MDW
1 stop21h 08mFrontier
Deal found 8/14$193

Cheapflights Fare Finder

 
Customize your flight search to find flights from Midway to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 14, 2025.
Use the filters below to find and compare flights from Chicago Midway Airport to Ontario that are best for you.

Fly from

Midway

Fly to

Ontario

Route

Depart

Return

Price

ChicagoOntario

MDW - ONT

MDWONT

Chicago Midway

Fri 10/10

6:24 pm-11:50 pm

1 stop7h 26m

Ontario

Sun 10/12

11:53 am-12:36 am

1 stop10h 43m

$150

ChicagoOntario

MDW - ONT

MDWONT

Chicago Midway

Thu 10/9

6:24 pm-11:50 pm

1 stop7h 26m

Ontario

Sun 10/12

6:53 am-9:31 am

1 stop24h 38m

$150

ChicagoOntario

MDW - ONT

MDWONT

Chicago Midway

Thu 10/23

6:24 pm-11:50 pm

1 stop7h 26m

Ontario

Sun 10/26

6:53 am-12:36 am

1 stop15h 43m

$150

ChicagoOntario

MDW - ONT

MDWONT

Chicago Midway

Fri 10/24

6:24 pm-11:50 pm

1 stop7h 26m

Ontario

Sun 10/26

6:53 am-12:36 am

1 stop15h 43m

$150

ChicagoOntario

MDW - ONT

MDWONT

Chicago Midway

Fri 9/19

3:48 pm-7:54 pm

1 stop6h 06m

Ontario

Sun 9/21

8:59 pm-3:53 pm

1 stop16h 54m

$151

ChicagoOntario

MDW - ONT

MDWONT

Chicago Midway

Thu 9/18

10:13 am-3:29 pm

1 stop7h 16m

Ontario

Sun 9/21

3:43 pm-3:53 pm

1 stop22h 10m

$154

ChicagoOntario

MDW - ONT

MDWONT

Chicago Midway

Thu 10/2

10:13 am-3:39 pm

1 stop7h 26m

Ontario

Sun 10/5

8:59 pm-3:53 pm

1 stop16h 54m

$154

ChicagoOntario

MDW - ONT

MDWONT

Chicago Midway

Sun 10/5

6:30 am-6:35 pm

1 stop14h 05m

Ontario

Thu 10/16

6:53 am-12:36 am

1 stop15h 43m

$156

ChicagoOntario

MDW - ONT

MDWONT

Chicago Midway

Sun 10/19

10:30 am-5:49 pm

1 stop9h 19m

Ontario

Sun 10/26

6:53 am-12:36 am

1 stop15h 43m

$156

ChicagoOntario

MDW - ONT

MDWONT

Chicago Midway

Thu 9/25

10:13 am-3:29 pm

1 stop7h 16m

Ontario

Fri 10/3

12:13 pm-8:52 pm

1 stop6h 39m

$158

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/14

Showing 1-10 of 20 results
1
2

The best insider tips for Chicago Midway Airport to Ontario flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Chicago Midway Airport to Ontario trip
Airports
MDW

Use the Orange Line train for a quick, 30-minute ride from downtown Chicago to MDW, avoiding traffic and saving money.

Read more about MDWby Ramsey Qubein
ONT

For quick access to Southern California, rent a car at ONT. The rental center is convenient, with easy highway access.

Read more about ONTby Bill Fink
Our travel experts
Ramsey Qubein

Ramsey Qubein

Expert on MDW

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more
Bill Fink

Bill Fink

Expert on ONT

Bill Fink

Bill Fink

Bill is an award-winning travel writer with extensive credits covering airlines and the aviation industry for publications including AARP, AFAR, The Points Guy and Yahoo. Based in Portland, Oregon, Bill has traveled to more than 75 countries - and been late for his flight in most of them. He once achieved top-level frequent flier status for all of American, Delta and United Airlines during a single year.

Read more

Best time to book a flight from Midway to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Midway with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Chicago Midway Airport to Ontario

What is the cheapest month to book a flight from Chicago Midway Airport to Ontario?

Currently, August is the cheapest month in which you can book a flight from Chicago Midway Airport to Ontario (average of $246). Flying from Chicago Midway Airport to Ontario in March is currently the most expensive (average of $328). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from MDW to ONT?

Find hourly flight availability from Midway to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 14, 2025.

One of the essential ways to save on airfare from Chicago Midway Airport to Ontario is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight at noon could potentially save you up to 14% on airfare.

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated August 14, 2025.
Read through reviews of airlines operating flights from Chicago Midway Airport to Ontario, such as Southwest and Frontier. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,244 reviews

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,244 reviews
Southwest
8.0
Very good
4,244 reviews

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Frontier
5.8
Fair
3,219 reviews
Southwest
8.0
Very good
4,244 reviews

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

Find useful and relevant information for your journey from Midway to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Ontario from Chicago Midway?

    If you book a flight to Ontario from Chicago Midway, you will be flying to Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario. There are 0 flights from Chicago Midway to Ontario per day from 2 different airlines.

  • What are the cheapest airlines flying from Chicago Midway Airport to Ontario round-trip?

    According to our current data, Frontier ($148), and Southwest ($298) offers the cheapest pricing from Chicago Midway Airport to Ontario. Frontier is priced at 63% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest flights from Chicago Midway Airport to Ontario?

    Looking at all options, your cheapest flight can be booked for $203. While the most popular route (Chicago Midway - Ontario) can be booked for $191 on average our data indicates $375 when flying from Chicago Midway Airport to Ontario.

  • Can I find deals for flights from Midway to Ontario that include hotel bookings?

    Yes. In addition to deals on Midway to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Midway to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Midway to Ontario.

  • Can I find deals for business class flights from Midway to Ontario?

    Yes. Cheapflights offers flight deals from Midway to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, August is the cheapest month in which you can book a flight from Chicago Midway Airport to Ontario (average of $246). Flying from Chicago Midway Airport to Ontario in March is currently the most expensive (average of $328). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Midway to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to Las Vegas flights
O'Hare Intl to Los Angeles flights
O'Hare Intl to San Francisco flights
Midway to Las Vegas flights
O'Hare Intl to Ontario flights
O'Hare Intl to San Diego flights
O'Hare Intl to Santa Ana flights
O'Hare Intl to Burbank flights
Midway to San Francisco flights
O'Hare Intl to Palm Springs flights
O'Hare Intl to Sacramento flights
Midway to Los Angeles flights
O'Hare Intl to Oakland flights
O'Hare Intl to San Jose flights
O'Hare Intl to Reno flights
O'Hare Intl to Fresno flights
Midway to San Diego flights
Rockford to Las Vegas flights
Midway to Santa Ana flights
Midway to Palm Springs flights
Midway to Oakland flights
Midway to San Jose flights
Midway to Reno flights
Midway to Sacramento flights
O'Hare Intl to Santa Barbara flights
O'Hare Intl to Monterey flights
O'Hare Intl to Arcata flights
O'Hare Intl to Long Beach flights
Midway to Burbank flights
O'Hare Intl to San Luis Obispo flights
Midway to Long Beach flights
O'Hare Intl to Medford flights
Midway to Fresno flights
O'Hare Intl to Santa Rosa flights
O'Hare Intl to Redding flights
Midway to Medford flights
O'Hare Intl to Bakersfield flights
O'Hare Intl to Tijuana flights
Midway to Tijuana flights
O'Hare Intl to Yuma flights
O'Hare Intl to Merced flights
O'Hare Intl to Mexicali flights
Midway to Mexicali flights
O'Hare Intl to Mammoth Lakes flights

Top 2 airlines flying from Midway to Ontario

Discover the top 2 airlines that operate flights from Midway to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$148Average$223FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$298Average$456FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.