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Ontario

$112+ Cheap flights from Michigan 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 8/26. Fares are subject to change and may not be available on all flights or dates of travel.
DTW — ONT
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
1 adult, Economy
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Cheap flight deals from Michigan to Ontario

Keep the following information in mind while searching for Michigan to Ontario flight deals. Data was last updated July 30, 2025.

Round-trip from

$223
(Trip.com)

One-way from

$112
(Trip.com)

Popular in

December

Cheapest in

January

Average price

$299
From Michigan to Ontario
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One-way flight from Michigan to Ontario
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Highest demand for flights based on searches. 13% potential increase in price ($42 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Michigan to Ontario

Cheapest flights from Michigan to Ontario
Explore the most affordable flight options available from Michigan to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2025.

This Trip.com deal was found by Cheapflights users on 7/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/66:10 amDTW - ONT
1 stop16h 44mFrontier
Mon 10/136:11 pmONT - DTW
1 stop27h 34mFrontier
Deal found 7/27$223
This Flightnetwork deal was found by Cheapflights users on 7/30. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/169:55 amORD - ONT
1 stop11h 19mFrontier
Fri 8/2212:59 amONT - ORD
1 stop20h 40mFrontier
Deal found 7/30$236
This Mytrip deal was found by Cheapflights users on 7/29. 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.
Sat 8/92:44 pmMDW - ONT
1 stop11h 06mFrontier
Fri 8/1512:59 amONT - MDW
1 stop17h 55mFrontier
Deal found 7/29$238
This FlightHub deal was found by Cheapflights users on 7/28. 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.
Sat 9/135:58 pmGRR - ONT
1 stop16h 25mFrontier
Sat 10/48:59 pmONT - GRR
1 stop19h 39mFrontier
Deal found 7/28$245
This American Airlines deal was found by Cheapflights users on 7/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/112:01 pmSBN - ONT
1 stop11h 03mAmerican Airlines
Wed 11/510:47 amONT - SBN
1 stop8h 21mAmerican Airlines
Deal found 7/30$277
This Delta deal was found by Cheapflights users on 7/30. 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 8/266:15 amSBN - ONT
1 stop7h 20mDelta
Sat 8/3011:45 amONT - SBN
1 stop7h 04mDelta
Deal found 7/30$283
This American Airlines deal was found by Cheapflights users on 7/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/47:34 amORD - ONT
1 stop12h 42mAmerican Airlines
Tue 10/71:00 pmONT - ORD
1 stop9h 30mAmerican Airlines
Deal found 7/29$283
This United Airlines deal was found by Cheapflights users on 7/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/204:43 pmFNT - ONT
1 stop8h 47mUnited Airlines
Sat 8/307:00 amONT - FNT
1 stop6h 08mUnited Airlines
Deal found 7/28$289
This Delta deal was found by Cheapflights users on 7/30. 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.
Mon 9/153:33 pmMBS - ONT
2 stops11h 09mDelta
Mon 9/2910:00 pmONT - MBS
2 stops9h 54mDelta
Deal found 7/30$299
This Delta deal was found by Cheapflights users on 7/29. 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 9/2011:00 amMDW - ONT
1 stop10h 15mDelta
Sat 9/2711:55 amONT - MDW
1 stop7h 15mDelta
Deal found 7/29$306
This Alaska Airlines deal was found by Cheapflights users on 7/29. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/118:00 amORD - ONT
1 stop9h 17mAlaska Airlines
Wed 12/311:30 amONT - ORD
1 stop10h 29mAlaska Airlines
Deal found 7/29$306
This Delta deal was found by Cheapflights users on 7/29. 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 11/85:20 amORD - ONT
1 stop7h 06mDelta
Tue 12/211:29 amONT - ORD
1 stop10h 18mDelta
Deal found 7/29$307

Cheapflights Fare Finder

 
Customize your flight search to find flights from Michigan 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 30, 2025.
Use the filters below to find and compare flights from Michigan to Ontario that are best for you.

Fly from

Michigan

Fly to

Ontario

Route

Depart

Return

Price

DetroitOntario

DTW - ONT

DTWONT

Detroit Metropolitan Wayne County

Mon 10/6

6:10 am-7:54 pm

1 stop16h 44m

Ontario

Mon 10/13

6:11 pm-12:45 am

1 stop27h 34m

$223

ChicagoOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

Sat 8/16

9:55 am-7:14 pm

1 stop11h 19m

Ontario

Fri 8/22

12:59 am-11:39 pm

1 stop20h 40m

$236

ChicagoOntario

MDW - ONT

MDWONT

Chicago Midway

Sat 8/9

2:44 pm-11:50 pm

1 stop11h 06m

Ontario

Fri 8/15

12:59 am-8:54 pm

1 stop17h 55m

$238

Grand RapidsOntario

GRR - ONT

GRRONT

Grand Rapids Gerald R. Ford Intl

Sat 9/13

5:58 pm-7:23 am

1 stop16h 25m

Ontario

Sat 10/4

8:59 pm-7:38 pm

1 stop19h 39m

$245

South BendOntario

SBN - ONT

SBNONT

South Bend/Michiana

Tue 8/26

6:15 am-10:35 am

1 stop7h 20m

Ontario

Sat 8/30

11:45 am-9:49 pm

1 stop7h 04m

$283

ChicagoOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

Sat 10/4

7:34 am-6:16 pm

1 stop12h 42m

Ontario

Tue 10/7

1:00 pm-12:30 am

1 stop9h 30m

$283

South BendOntario

SBN - ONT

SBNONT

South Bend/Michiana

Tue 8/26

7:35 am-5:52 pm

2 stops13h 17m

Ontario

Tue 9/2

11:29 pm-12:58 pm

1 stop10h 29m

$288

FlintOntario

FNT - ONT

FNTONT

Flint Bishop

Wed 8/20

4:43 pm-10:30 pm

1 stop8h 47m

Ontario

Sat 8/30

7:00 am-4:08 pm

1 stop6h 08m

$289

Bay CityOntario

MBS - ONT

MBSONT

Bay City MBS Intl

Mon 9/15

3:33 pm-11:42 pm

2 stops11h 09m

Ontario

Mon 9/29

10:00 pm-10:54 am

2 stops9h 54m

$299

ChicagoOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

Tue 11/11

8:00 am-3:17 pm

1 stop9h 17m

Ontario

Wed 12/3

11:30 am-11:59 pm

1 stop10h 29m

$306

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 60 results
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Best time to book a flight from Michigan to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Michigan 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 Michigan to Ontario

What is the cheapest month to book a flight from Michigan to Ontario?

Currently, August is the cheapest month in which you can book a flight from Michigan to Ontario (average of $246). Flying from Michigan 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 MI to ONT?

Find hourly flight availability from Michigan 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 30, 2025.

When flying from Michigan to Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 30, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest, and Delta from Michigan to Ontario by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,241 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,980 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,611 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,896 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Find useful and relevant information for your journey from Michigan 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 Michigan?

    Most people fly into Ontario (ONT) if they book a flight to Ontario from Michigan. Ontario is conveniently located just 3.1 mi from Ontario’s city center.

  • What are the cheapest airlines to fly from Michigan to Ontario one-way?

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $115. American Airlines flights start at $139 while deals on Alaska Airlines start at $144 one-way.

  • What are the most popular routes from Michigan to Ontario?

    The most popular route from Michigan to Ontario is Chicago O'Hare Intl - Ontario. You may also consider Detroit Metropolitan Wayne County - Ontario or Chicago Midway - Ontario.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Michigan 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 Michigan to Ontario?

    Currently, August is the cheapest month in which you can book a flight from Michigan to Ontario (average of $246). Flying from Michigan 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

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Alternative routes for Michigan to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Michigan to Ontario

Discover the top 6 airlines that operate flights from Michigan 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 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$148Average$232FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$177Average$206FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$269Average$499FlexibilityNo cancel feeOn-time71%
DeltaCheapest$298Average$437FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$308Average$501FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$388Average$483FlexibilityNo cancel feeOn-time63%

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