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$72+ 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 2/23. Fares are subject to change and may not be available on all flights or dates of travel.
MDW — ONT
Feb 7 — Feb 141
Sat 2/7
Sat 2/14
1 adult, Economy
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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 January 8, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$194
(Kiwi.com)

One-way from

$72
(Frontier)

Popular in

December

Cheapest in

January

Average price

$214

Good round-trip deal

$372 or less

Good one-way deal

$338 or less
Provider with most accurate pricing for Chicago Midway-Ontario flight deals.
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Provider most trusted by Cheapflights users for Chicago Midway-Ontario flights.
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From Chicago Midway to Ontario
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One-way flight from Chicago Midway to Ontario
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Highest demand for flights based on searches. 3% potential increase in price ($15 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Price to beat on a round-trip flight from Chicago Midway to Ontario.
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Price to beat on a one-way flight from Chicago Midway to Ontario.
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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 January 8, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1111:25 amMDW - ONT
1 stop30h 50mFrontier
Wed 4/84:41 pmONT - MDW
1 stop19h 18mFrontier
Deal found 1/7$194
This Kiwi.com deal was found by Cheapflights users on 1/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/116:15 amMDW - ONT
2 stops14h 07mFrontier
Fri 2/132:21 pmONT - MDW
1 stop22h 58mFrontier
Deal found 1/6$238
This Kiwi.com deal was found by Cheapflights users on 1/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/199:09 pmMDW - ONT
1 stop19h 58mFrontier
Thu 1/222:06 pmONT - MDW
1 stop23h 43mFrontier
Deal found 1/6$241
This Kiwi.com deal was found by Cheapflights users on 1/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/269:45 amMDW - ONT
2 stops16h 35mFrontier
Thu 1/292:06 pmONT - MDW
1 stop23h 43mFrontier
Deal found 1/7$246
This Delta deal was found by Cheapflights users on 1/8. 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.
Sat 3/71:29 pmMDW - ONT
2 stops11h 08mDelta
Mon 3/95:53 pmONT - MDW
2 stops12h 57mDelta
Deal found 1/8$251
This Frontier deal was found by Cheapflights users on 1/5. 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 1/1511:05 amMDW - ONT
1 stop9h 56mFrontier
Sun 1/188:32 amONT - MDW
1 stop6h 48mFrontier
Deal found 1/5$256
This Kiwi.com deal was found by Cheapflights users on 1/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/47:15 amMDW - ONT
2 stops13h 07mFrontier
Sun 3/87:09 pmONT - MDW
1 stop26h 11mFrontier
Deal found 1/8$260
This Kiwi.com deal was found by Cheapflights users on 1/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/67:30 amMDW - ONT
2 stops18h 50mFrontier
Sun 2/810:18 amONT - MDW
1 stop10h 55mFrontier
Deal found 1/7$265
This Kiwi.com deal was found by Cheapflights users on 1/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/37:30 amMDW - ONT
2 stops31h 41mFrontier
Sun 3/87:09 pmONT - MDW
1 stop26h 11mFrontier
Deal found 1/7$266
This Kiwi.com deal was found by Cheapflights users on 1/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/53:00 pmMDW - ONT
2 stops10h 59mFrontier
Sun 3/87:09 pmONT - MDW
1 stop26h 11mFrontier
Deal found 1/7$275
This CheapOair deal was found by Cheapflights users on 1/6. 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 1/123:00 pmMDW - ONT
1 stop10h 56mFrontier
Thu 1/158:02 amONT - MDW
1 stop7h 18mFrontier
Deal found 1/6$283

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 January 8, 2026.
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

Wed 3/4

7:15 am-6:22 pm

2 stops13h 07m

Ontario

Sun 3/8

7:09 pm-11:20 pm

1 stop26h 11m

$260

ChicagoOntario

MDW - ONT

MDWONT

Chicago Midway

Sat 3/7

1:29 pm-10:37 pm

2 stops11h 08m

Ontario

Mon 3/9

10:25 pm-9:56 am

1 stop9h 31m

$293

ChicagoOntario

MDW - ONT

MDWONT

Chicago Midway

Mon 2/2

12:46 pm-9:05 pm

1 stop10h 19m

Ontario

Tue 2/10

12:41 pm-10:22 pm

1 stop7h 41m

$345

ChicagoOntario

MDW - ONT

MDWONT

Chicago Midway

Mon 3/2

12:45 pm-9:05 pm

1 stop10h 20m

Ontario

Tue 3/10

10:25 pm-9:56 am

1 stop9h 31m

$345

ChicagoOntario

MDW - ONT

MDWONT

Chicago Midway

Sun 2/1

6:00 am-11:31 am

1 stop7h 31m

Ontario

Sat 2/7

12:41 pm-10:22 pm

1 stop7h 41m

$345

ChicagoOntario

MDW - ONT

MDWONT

Chicago Midway

Thu 2/5

6:00 am-11:31 am

1 stop7h 31m

Ontario

Mon 2/9

10:30 pm-9:53 am

1 stop9h 23m

$355

ChicagoOntario

MDW - ONT

MDWONT

Chicago Midway

Fri 1/30

6:00 am-11:31 am

1 stop7h 31m

Ontario

Fri 1/30

10:30 pm-9:53 am

1 stop9h 23m

$355

ChicagoOntario

MDW - ONT

MDWONT

Chicago Midway

Thu 4/9

8:00 am-3:46 pm

1 stop9h 46m

$73

ChicagoOntario

MDW - ONT

MDWONT

Chicago Midway

Mon 3/2

8:15 am-2:30 pm

1 stop8h 15m

$90

ChicagoOntario

MDW - ONT

MDWONT

Chicago Midway

Sun 4/12

8:00 am-3:46 pm

1 stop9h 46m

$105

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/7

Showing 1-10 of 16 results
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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Chicago Midway Airport-Ontario flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 month to book a flight from Chicago Midway Airport to Ontario?

Currently, June is the cheapest month in which you can book a flight from Chicago Midway Airport to Ontario (average of $122). Flying from Chicago Midway Airport to Ontario in December is currently the most expensive (average of $256). 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 January 8, 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 24% on airfare.

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
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

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 January 8, 2026.
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
4,250 reviews

Boarding

8.1

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Overall

8.0

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
4,250 reviews
Southwest
8.0
Very good
4,250 reviews

Boarding

8.1

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Overall

8.0

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
5.7
Fair
3,061 reviews
Southwest
8.0
Very good
4,250 reviews

Boarding

8.1

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Overall

8.0

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 is 1 flight from Chicago Midway to Ontario per day from 2 different airlines.

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

    A quick flight from Chicago Midway Airport to Ontario can take about 11h 08m. Frontier provides one of the quickest options available for as low as $293. 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 are the cheapest airlines flying from Chicago Midway Airport to Ontario round-trip?

    According to our current data, Frontier ($153), and Southwest ($282) offers the cheapest pricing from Chicago Midway Airport to Ontario. Frontier is priced at 65% 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 $338. While the most popular route (Chicago Midway - Ontario) can be booked for $203 on average, our data indicates $405 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, June is the cheapest month in which you can book a flight from Chicago Midway Airport to Ontario (average of $122). Flying from Chicago Midway Airport to Ontario in December is currently the most expensive (average of $256). 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

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Alternative routes for Midway to Ontario

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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 January 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$153Average$244FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$282Average$439FlexibilityNo cancel feeOn-time63%

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