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$120+ 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 8/20. Fares are subject to change and may not be available on all flights or dates of travel.
MDW — ONT
Aug 22 — Aug 291
Sat 8/22
Sat 8/29
1 adult, Economy
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Cheap 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 July 23, 2026.

This Southwest deal was found by Cheapflights users on 7/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/272:00 pm
MDW
-
ONT
Nonstop4h 10m
Southwest
Mon 8/3111:55 pm
ONT
-
MDW
Nonstop3h 50m
Southwest
Deal found 7/20$239
This Frontier deal was found by Cheapflights users on 7/20. 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.
Thu 8/209:26 pm
MDW
-
ONT
1 stop13h 12m
Frontier
Thu 8/278:17 am
ONT
-
MDW
1 stop10h 14m
Frontier
Deal found 7/20$240
This Southwest deal was found by Cheapflights users on 7/22. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/172:00 pm
MDW
-
ONT
Nonstop4h 10m
Southwest
Tue 8/188:30 am
ONT
-
MDW
1 stop8h 40m
Southwest
Deal found 7/22$249
This Southwest deal was found by Cheapflights users on 7/21. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/196:40 am
MDW
-
ONT
1 stop5h 35m
Southwest
Mon 8/248:10 pm
ONT
-
MDW
1 stop7h 35m
Southwest
Deal found 7/21$259
This Southwest deal was found by Cheapflights users on 7/18. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/272:00 pm
MDW
-
ONT
Nonstop4h 10m
Southwest
Sat 9/511:55 pm
ONT
-
MDW
Nonstop3h 50m
Southwest
Deal found 7/18$268
This Delta deal was found by Cheapflights users on 7/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/96:05 am
MDW
-
ONT
1 stop7h 00m
Delta
Tue 9/157:05 am
ONT
-
MDW
1 stop7h 10m
Delta
Deal found 7/22$269
This Frontier deal was found by Cheapflights users on 7/19. 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 8/219:26 pm
MDW
-
ONT
1 stop13h 10m
Frontier
Mon 8/248:17 am
ONT
-
MDW
1 stop10h 14m
Frontier
Deal found 7/19$273
This Frontier deal was found by Cheapflights users on 7/20. 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.
Thu 8/209:26 pm
MDW
-
ONT
1 stop13h 12m
Frontier
Sun 8/308:17 am
ONT
-
MDW
1 stop10h 14m
Frontier
Deal found 7/20$274

Find 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 July 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$239
(Southwest)

One-way from

$120
(Southwest)

Popular in

July

Cheapest in

October

Average price

$831

Good round-trip deal

$268 or less

Good one-way deal

$119 or less
Provider with most accurate pricing for Chicago Midway-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago Midway-Ontario flights.
Search Deals
From Chicago Midway to Ontario
Search Deals
One-way flight from Chicago Midway to Ontario
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($37 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($34 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
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

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 July 23, 2026.
Use the filters below to find and compare flights from Chicago Midway Airport to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

ChicagoOntario

MDW - ONT

MDWONT

Chicago Midway

Mon 8/17

2:00 pm-4:10 pm

Nonstop4h 10m

Ontario

Mon 8/24

11:55 pm-5:45 am

Nonstop3h 50m

$239

ChicagoOntario

MDW - ONT

MDWONT

Chicago Midway

Wed 9/2

1:00 pm-6:55 pm

2 stops7h 55m

Ontario

Wed 9/9

6:40 am-5:10 pm

2 stops8h 30m

$269

ChicagoOntario

MDW - ONT

MDWONT

Chicago Midway

Thu 8/20

8:00 am-3:05 pm

2 stops9h 05m

Ontario

Thu 8/27

12:50 pm-11:20 pm

2 stops8h 30m

$269

ChicagoOntario

MDW - ONT

MDWONT

Chicago Midway

Thu 8/27

8:00 am-3:05 pm

2 stops9h 05m

Ontario

Sat 9/5

11:55 pm-5:45 am

Nonstop3h 50m

$283

ChicagoOntario

MDW - ONT

MDWONT

Chicago Midway

Tue 8/18

5:25 pm-7:35 pm

Nonstop4h 10m

Ontario

Tue 8/25

7:05 pm-5:45 am

1 stop8h 40m

$307

ChicagoOntario

MDW - ONT

MDWONT

Chicago Midway

Mon 8/17

2:00 pm-4:10 pm

Nonstop4h 10m

Ontario

Tue 8/18

3:35 pm-11:20 pm

1 stop5h 45m

$307

ChicagoOntario

MDW - ONT

MDWONT

Chicago Midway

Fri 10/23

11:55 am-2:10 pm

Nonstop4h 15m

Ontario

Tue 10/27

11:55 pm-5:40 am

Nonstop3h 45m

$343

ChicagoOntario

MDW - ONT

MDWONT

Chicago Midway

Sat 9/12

6:00 pm-8:10 pm

Nonstop4h 10m

Ontario

Sun 9/13

11:55 pm-5:45 am

Nonstop3h 50m

$348

ChicagoOntario

MDW - ONT

MDWONT

Chicago Midway

Fri 9/4

2:00 pm-4:10 pm

Nonstop4h 10m

Ontario

Mon 9/7

11:55 pm-5:45 am

Nonstop3h 50m

$348
Cheapest one-way

ChicagoOntario

MDW - ONT

MDWONT

Chicago Midway

Thu 10/22

6:05 am-9:55 am

1 stop5h 50m

$130

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/23

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

Compare providers for flights from Midway to Ontario

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Midway to Ontario in July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Chicago Midway Airport-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chicago Midway Airport-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Chicago Midway Airport-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Chicago Midway Airport-Ontario flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago Midway Airport-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 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 July 23, 2026.

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 morning tend to be the most expensive. A flight at noon could potentially save you up to 50% on airfare.

How much does it cost to fly round-trip from Chicago Midway Airport to Ontario?

Airfare is below average for this route at the moment.

Chicago Midway Airport to Ontario flights typically cost between $550 and $649 in August.
The cheapest round-trip price found within the last 5 days was $239 on Southwest (Aug 17-Aug 24).

The best insider tips for Chicago Midway Airport to Ontario flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Chicago Midway Airport to Ontario trip
Our travel experts
Ramsey Qubein

Ramsey Qubein

Expert on MDW

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 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

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 July 23, 2026.
Read through reviews of airlines operating flights from Chicago Midway Airport to Ontario, such as Southwest. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,238 reviews

Crew

8.6

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Overall

8.0

Food

7.0

Reviews

1 / 20
10.0
Excellent

Sarah,Aug 2024

MDW - AUS

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.
Southwest
8.0
Very good
4,238 reviews
Southwest
8.0
Very good
4,238 reviews

Crew

8.6

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Overall

8.0

Food

7.0

Reviews

1 / 20
10.0
Excellent

Sarah,Aug 2024

MDW - AUS

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.

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 is 1 flight from Chicago Midway to Ontario per day from 1 airline.

  • How long is the flight from Chicago Midway Airport to Ontario?

    A quick flight from Chicago Midway Airport to Ontario can take about 4h 15m. Southwest provides one of the quickest options available for as low as $239. The distance between Chicago Midway Airport and Ontario is about 1701 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What is the cheapest airline to fly from Chicago Midway Airport to Ontario round-trip?

    According to our current data, Southwest ($268), offers the cheapest pricing from Chicago Midway Airport to Ontario. Southwest is priced at 44% 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 $119. While the most popular route (Chicago Midway - Ontario) can be booked for $239 on average, our data indicates $273 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Midway to Ontario

Discover the top airline 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 July 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$268Average$511FlexibilityNo cancel feeOn-time63%

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