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$149+ Cheap flights from Ontario (ONT) to Midway (MDW)

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 6/20. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MDW
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheapflights Tip: The best prices from Ontario to Chicago Midway are usually found in October or September, booked 54 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

Cheap flight deals from Ontario to Midway

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Midway (MDW). 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 June 12, 2025.

Round-trip from

$244
(FlightHub)

One-way from

$149
(Frontier)

Popular in

January

Cheapest in

October

Average price

$470

Good round-trip deal

$415 or less

Good one-way deal

$238 or less
From Ontario to Chicago Midway
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One-way flight from Ontario to Chicago Midway
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Highest demand for flights based on searches. 23% potential increase in price ($101 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($20 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from Ontario to Chicago Midway.
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Price to beat on a one-way flight from Ontario to Chicago Midway.
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Find flight deals from Ontario to Midway

Cheapest flights from Ontario to Midway
Explore the most affordable flight options available from Ontario to Midway. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This FlightHub deal was found by Cheapflights users on 6/10. 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 8/229:59 amONT - MDW
1 stop9h 49mFrontier
Mon 8/256:31 pmMDW - ONT
1 stop7h 19mFrontier
Deal found 6/10$244
This Delta deal was found by Cheapflights users on 6/10. 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.
Tue 10/1412:00 pmONT - MDW
1 stop7h 44mDelta
Tue 10/211:05 pmMDW - ONT
1 stop8h 37mDelta
Deal found 6/10$319
This Southwest deal was found by Cheapflights users on 6/12. 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.
Tue 8/1911:55 amONT - MDW
Nonstop3h 50mSouthwest
Tue 8/265:25 pmMDW - ONT
Nonstop4h 10mSouthwest
Deal found 6/12$397

Cheapflights Fare Finder

Customize your flight search to find flights from Ontario to Midway 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 June 12, 2025.
Use the filters below to find and compare flights from Ontario to Chicago Midway Airport that are best for you.

Fly from

Ontario

Fly to

Midway

Route

Depart

Return

Price

OntarioChicago

ONT - MDW

ONTMDW

Ontario

Fri 8/22

9:59 am-9:48 pm

1 stop9h 49m

Chicago Midway

Mon 8/25

6:31 pm-11:50 pm

1 stop7h 19m

$244

OntarioChicago

ONT - MDW

ONTMDW

Ontario

Tue 10/14

12:00 pm-9:44 pm

1 stop7h 44m

Chicago Midway

Tue 10/21

1:05 pm-7:42 pm

1 stop8h 37m

$319

OntarioChicago

ONT - MDW

ONTMDW

Ontario

Sat 7/19

6:00 am-11:50 am

Nonstop3h 50m

Chicago Midway

Tue 7/29

2:50 pm-8:00 pm

1 stop7h 10m

$407

OntarioChicago

ONT - MDW

ONTMDW

Ontario

Fri 7/4

6:00 am-2:56 pm

1 stop6h 56m

$158

OntarioChicago

ONT - MDW

ONTMDW

Ontario

Wed 9/17

12:00 pm-9:44 pm

1 stop7h 44m

$160

OntarioChicago

ONT - MDW

ONTMDW

Ontario

Tue 9/9

11:55 am-5:45 pm

Nonstop3h 50m

$199

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

The best insider tips for Ontario to Chicago Midway Airport 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 Ontario to Chicago Midway Airport trip
Airports
ONT

ONT's TSA security is smoother and quicker than LAX, making it ideal for weekday business travelers.

Read more about ONTby Bill Fink
MDW

Use the 'L' train for a quick, affordable ride to downtown Chicago from MDW, taking less than 30 minutes.

Read more about MDWby Ramsey Qubein
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 Ontario to Midway

Have a flexible travel schedule? Discover the best time to fly to Midway from Ontario 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 Ontario to Chicago Midway Airport

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

Use this chart to determine the optimal time to book a round-trip flight from Ontario to Midway. Price data was last updated on June 9, 2025.

Booking 54 days in advance of your planned departure date is, on average, the best time to get cheap flights from Ontario to Chicago Midway Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, April is the cheapest month in which you can book a flight from Ontario to Chicago Midway Airport (average of $160). Flying from Ontario to Chicago Midway Airport in November is currently the most expensive (average of $249). 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 ONT to MDW?

Find hourly flight availability from Ontario to Midway. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

It’s typically best to fly out from Ontario to Chicago Midway Airport in the evening. Doing so could potentially save you 54% on the flight price compared to flying at noon, which is usually more expensive.

What is the cheapest day to fly from Ontario to Chicago Midway Airport?

Use this chart to determine the cheapest time to fly round-trip from Ontario to Midway. Price data was last updated on June 8, 2025.

Travelers seeking maximum savings on their Ontario to Chicago Midway Airport flight should consider departing on Wednesday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Midway by month

Plan your trip to Midway by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Chicago Midway Airport ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Chicago Midway Airport when rainfall is around 1.7 in.

Temperature in Midway by month

Plan your trip to Midway by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Chicago Midway Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Midway

Get insights into the airlines that provide service to Midway. 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 Midway. Reviews last updated June 12, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta and Frontier from Ontario to Chicago to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,287 reviews

Food

7.1

Entertainment

7.6

Overall

8.0

Boarding

8.2

Comfort

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Southwest
8.0
Very good
4,287 reviews
Southwest
8.0
Very good
4,287 reviews

Food

7.1

Entertainment

7.6

Overall

8.0

Boarding

8.2

Comfort

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Delta
8.0
Very good
7,950 reviews
Southwest
8.0
Very good
4,287 reviews

Food

7.1

Entertainment

7.6

Overall

8.0

Boarding

8.2

Comfort

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Frontier
5.9
Fair
3,295 reviews
Southwest
8.0
Very good
4,287 reviews

Food

7.1

Entertainment

7.6

Overall

8.0

Boarding

8.2

Comfort

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Midway. 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 from for flights from Ontario to Chicago Midway?

    Ontario (ONT), located 3.1 mi from the city center, is the airport you fly out of when you book flights from Ontario to Chicago Midway. 3 airlines have flights from Ontario to Chicago Midway on a regular basis. Booking flights from Ontario to Chicago Midway should not be difficult; the airport handles an average of 0 outbound flights to Chicago Midway per day.

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

    According to our current data, Frontier ($244), Delta ($319), and Southwest ($407) offers the cheapest pricing from Ontario to Chicago Midway Airport. Frontier is currently priced 26% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Ontario to Chicago Midway Airport one-way?

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $149. Delta flights start at $160 while deals on Southwest start at $199 one-way.

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

    Looking at all options, your cheapest flight can be booked for $205. While the most popular route (Ontario - Chicago Midway) can be booked for $234 on average our data indicates $372 when flying from Ontario to Chicago Midway Airport.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ontario to Midway 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 Ontario to Chicago Midway Airport?

    Currently, April is the cheapest month in which you can book a flight from Ontario to Chicago Midway Airport (average of $160). Flying from Ontario to Chicago Midway Airport in November is currently the most expensive (average of $249). 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

Traveling to a place near Ontario?

Book flights to Ontario if you plan to visit one of these locations
Merrillville
Lansing
Benton Harbor
Porter
Hammond
Valparaiso
Chesterton

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Top 3 airlines flying from Ontario to Midway

Discover the top 3 airlines that operate flights from Ontario to Midway. 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$128Average$199FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$237Average$412FlexibilityNo cancel feeOn-time63%
DeltaCheapest$256Average$468FlexibilityNo cancel feeOn-timeN/A

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