What airlines fly to Ontario?

Delta, American Airlines and United Airlines are the top three most popular airlines that fly to Ontario from Michigan according to our data. Delta is the first choice among our users, with 43% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 7 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

How many flights depart from Michigan to Ontario on average per week?

6 flights are operational weekly from Michigan to Ontario as of August 2026. The most popular departure day for this route is Wed, with 33% of flights per week taking off on this day.

What is the cheapest airline that flies from Michigan to Ontario?

Frontier, United Airlines, and Delta are the most popular carriers operating from Michigan to Ontario

How long does it take to fly to Ontario?

Average flight duration from Michigan to Ontario depends on which airport you fly into and out of. Flying from Detroit to Los Angeles is 4h 41m on average, while flying from Grand Rapids to Los Angeles is 6h 31m on average. Los Angeles is the most popular airport in Ontario.

When did momondo last update prices for flights from Michigan to Ontario Airport?

Prices for flights from Michigan to Ontario Airport refresh daily.

How many operators does momondo search for flights from Michigan to Ontario Airport?

The number of operators available for flights from Michigan to Ontario Airport is 5 as of August 2026.

How old do you have to be to fly from Michigan to Ontario Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Michigan to Ontario Airport.

What documentation or ID do you need to fly to Ontario Airport?

The travel and health documents required for your trip to Ontario Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ontario Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$61 Cheap Flights from Michigan to Ontario in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Michigan to Los Angeles

Round-trip

One-way

Last minute

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Cheap round-trip flights

Enter your travel dates to find the best prices.

6:30 am - 11:47 pmORD Chicago O'Hare Intl-ONT Ontario

19h 17m1 stop Denver Intl

11:45 am - 12:23 amONT Ontario-ORD Chicago O'Hare Intl

10h 38m1 stop Denver Intl

$148Frontier

Wed, Sep 30 - Sat, Oct 3

6:30 am - 11:47 pmORD Chicago O'Hare Intl-ONT Ontario

19h 17m1 stop Denver Intl

11:45 am - 12:23 amONT Ontario-ORD Chicago O'Hare Intl

10h 38m1 stop Denver Intl

$154Frontier

Wed, Sep 9 - Mon, Sep 14

6:15 pm - 8:48 pmORD Chicago O'Hare Intl-ONT Ontario

4h 33mnonstop

6:00 am - 12:15 pmONT Ontario-ORD Chicago O'Hare Intl

4h 15mnonstop

$239American Airlines

Thu, Jan 7 - Mon, Jan 11

2:00 pm - 4:10 pmMDW Chicago Midway-ONT Ontario

4h 10mnonstop

11:55 pm - 5:45 amONT Ontario-MDW Chicago Midway

3h 50mnonstop

$239Southwest

Thu, Sep 10 - Sat, Sep 19

3:30 pm - 5:45 pmMDW Chicago Midway-ONT Ontario

4h 15mnonstop

6:30 am - 12:20 pmONT Ontario-MDW Chicago Midway

3h 50mnonstop

$239Southwest

Wed, Oct 28 - Sat, Oct 31

2:22 pm - 8:24 pmORD Chicago O'Hare Intl-ONT Ontario

8h 02m1 stop Portland

10:04 am - 5:38 amONT Ontario-ORD Chicago O'Hare Intl

17h 34m1 stop Las Vegas Harry Reid Intl

$245Multiple Airlines

Sat, Sep 5 - Sat, Sep 12

6:15 pm - 8:48 pmORD Chicago O'Hare Intl-ONT Ontario

4h 33mnonstop

6:00 am - 12:15 pmONT Ontario-ORD Chicago O'Hare Intl

4h 15mnonstop

$248American Airlines

Wed, Jan 20 - Sun, Jan 24

8:33 pm - 10:59 pmORD Chicago O'Hare Intl-ONT Ontario

4h 26mnonstop

1:56 pm - 12:59 amONT Ontario-ORD Chicago O'Hare Intl

9h 03m1 stop San Francisco

$249United Airlines

Thu, Sep 10 - Mon, Sep 14

8:33 pm - 10:59 pmORD Chicago O'Hare Intl-ONT Ontario

4h 26mnonstop

9:01 am - 8:26 pmONT Ontario-ORD Chicago O'Hare Intl

9h 25m1 stop San Francisco

$249United Airlines

Wed, Sep 9 - Thu, Sep 10

6:30 am - 10:30 amORD Chicago O'Hare Intl-ONT Ontario

6h 00m1 stop Denver Intl

7:59 pm - 6:20 amONT Ontario-ORD Chicago O'Hare Intl

8h 21m1 stop Seattle/Tacoma Intl

$249Multiple Airlines

Sat, Sep 26 - Mon, Sep 28

Cheap last minute flights

Enter your travel dates to find the best prices.

2:41 pm - 11:50 pmORD Chicago O'Hare Intl-ONT Ontario

11h 09m1 stop Denver Intl

9:33 am - 12:49 amONT Ontario-ORD Chicago O'Hare Intl

13h 16m1 stop Houston George Bush Intcntl

$178Frontier

Fri, Aug 21 - Sun, Aug 23

2:41 pm - 11:50 pmORD Chicago O'Hare Intl-ONT Ontario

11h 09m1 stop Denver Intl

9:33 am - 12:49 amONT Ontario-ORD Chicago O'Hare Intl

13h 16m1 stop Houston George Bush Intcntl

$178Frontier

Sat, Aug 22 - Mon, Aug 24

8:06 pm - 10:35 pmORD Chicago O'Hare Intl-ONT Ontario

4h 29mnonstop

1:18 pm - 10:46 pmONT Ontario-ORD Chicago O'Hare Intl

7h 28m1 stop Denver Intl

$267United Airlines

Fri, Aug 21 - Mon, Aug 24

4:20 pm - 10:59 pmORD Chicago O'Hare Intl-ONT Ontario

8h 39m1 stop San Francisco

1:56 pm - 10:30 pmONT Ontario-ORD Chicago O'Hare Intl

6h 34m1 stop San Francisco

$277United Airlines

Thu, Aug 20 - Sat, Aug 22

7:44 pm - 11:34 pmORD Chicago O'Hare Intl-ONT Ontario

5h 50m1 stop Salt Lake City

7:05 am - 4:51 pmONT Ontario-ORD Chicago O'Hare Intl

7h 46m1 stop Atlanta Hartsfield-Jackson

$277Delta

Mon, Aug 24 - Sat, Aug 29

7:44 pm - 11:34 pmORD Chicago O'Hare Intl-ONT Ontario

5h 50m1 stop Salt Lake City

1:06 pm - 9:33 pmONT Ontario-ORD Chicago O'Hare Intl

6h 27m1 stop Salt Lake City

$277Delta

Mon, Aug 24 - Thu, Aug 27

6:50 am - 12:40 pmMDW Chicago Midway-ONT Ontario

7h 50m1 stop Las Vegas Harry Reid Intl

3:35 pm - 11:20 pmONT Ontario-MDW Chicago Midway

5h 45m1 stop Phoenix Sky Harbor Intl

$298Southwest

Tue, Aug 25 - Tue, Sep 1

6:00 am - 12:30 pmMDW Chicago Midway-ONT Ontario

8h 30m1 stop Dallas Love Field

8:30 am - 7:10 pmONT Ontario-MDW Chicago Midway

8h 40m1 stop Austin Bergstrom

$298Southwest

Tue, Aug 25 - Tue, Sep 1

2:41 pm - 11:50 pmORD Chicago O'Hare Intl-ONT Ontario

11h 09m1 stop Denver Intl

7:59 pm - 6:20 amONT Ontario-ORD Chicago O'Hare Intl

8h 21m1 stop Seattle/Tacoma Intl

$308Multiple Airlines

Fri, Aug 21 - Sun, Aug 23

8:45 am - 7:32 amORD Chicago O'Hare Intl-ONT Ontario

24h 47m1 stop Houston George Bush Intcntl

12:00 pm - 11:59 pmONT Ontario-ORD Chicago O'Hare Intl

9h 59m1 stop Seattle/Tacoma Intl

$310Multiple Airlines

Sat, Aug 22 - Wed, Aug 26

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American Airlines flights from Michigan to Ontario

Our best American Airlines deals on Michigan to Ontario flight tickets

American Airlines

Oct 7

SBN2:34 pmSouth Bend/Michiana

11h 19m

2 stops

ONT10:53 pmOntario

Oct 13

ONT11:59 pmOntario

9h 01m

1 stop

SBN12:00 pmSouth Bend/Michiana

$364

American Airlines

Sep 15

SBN6:41 pmSouth Bend/Michiana

6h 56m

1 stop

ONT10:37 pmOntario

Sep 22

ONT12:37 pmOntario

7h 29m

1 stop

SBN11:06 pmSouth Bend/Michiana

$372

American Airlines

Sep 15

SBN12:31 pmSouth Bend/Michiana

8h 46m

2 stops

ONT6:17 pmOntario

Sep 22

ONT12:37 pmOntario

7h 29m

1 stop

SBN11:06 pmSouth Bend/Michiana

$377

Frontier flights from Michigan to Ontario

Our best Frontier deals on Michigan to Ontario flight tickets

Frontier

Sep 30

ORD6:30 amChicago O'Hare Intl

19h 17m

1 stop

ONT11:47 pmOntario

Oct 3

ONT11:45 amOntario

10h 38m

1 stop

ORD12:23 amChicago O'Hare Intl

$148

Frontier

Sep 9

ORD6:30 amChicago O'Hare Intl

19h 17m

1 stop

ONT11:47 pmOntario

Sep 14

ONT11:45 amOntario

10h 38m

1 stop

ORD12:23 amChicago O'Hare Intl

$154

Frontier

Sep 24

ORD1:01 pmChicago O'Hare Intl

7h 38m

1 stop

ONT6:39 pmOntario

Sep 28

ONT8:24 pmOntario

7h 14m

1 stop

ORD5:38 amChicago O'Hare Intl

$160

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoOntario

ORD Chicago O'Hare Intl - ONT Ontario

ORDONT

Chicago O'Hare Intl

Wed 9/30

6:30 am-11:47 pm

1 stop19h 17m

Ontario

Sat 10/3

11:45 am-12:23 am

1 stop10h 38m

$148

ChicagoOntario

ORD Chicago O'Hare Intl - ONT Ontario

ORDONT

Chicago O'Hare Intl

Wed 9/9

6:30 am-11:47 pm

1 stop19h 17m

Ontario

Mon 9/14

11:45 am-12:23 am

1 stop10h 38m

$154

ChicagoOntario

ORD Chicago O'Hare Intl - ONT Ontario

ORDONT

Chicago O'Hare Intl

Thu 1/7

6:15 pm-8:48 pm

Nonstop4h 33m

Ontario

Mon 1/11

6:00 am-12:15 pm

Nonstop4h 15m

$239

Quickest round-trip

ChicagoOntario

MDW Chicago Midway - ONT Ontario

MDWONT

Chicago Midway

Thu 9/10

2:00 pm-4:10 pm

Nonstop4h 10m

Ontario

Sat 9/19

11:55 pm-5:45 am

Nonstop3h 50m

$239

ChicagoOntario

MDW Chicago Midway - ONT Ontario

MDWONT

Chicago Midway

Wed 10/28

3:30 pm-5:45 pm

Nonstop4h 15m

Ontario

Sat 10/31

6:30 am-12:20 pm

Nonstop3h 50m

$239

ChicagoOntario

ORD Chicago O'Hare Intl - ONT Ontario

ORDONT

Chicago O'Hare Intl

Sat 9/5

2:22 pm-8:24 pm

1 stop8h 02m

Ontario

Sat 9/12

10:04 am-5:38 am

1 stop17h 34m

$245

ChicagoOntario

ORD Chicago O'Hare Intl - ONT Ontario

ORDONT

Chicago O'Hare Intl

Wed 1/20

6:15 pm-8:48 pm

Nonstop4h 33m

Ontario

Sun 1/24

6:00 am-12:15 pm

Nonstop4h 15m

$248

ChicagoOntario

ORD Chicago O'Hare Intl - ONT Ontario

ORDONT

Chicago O'Hare Intl

Thu 9/10

8:33 pm-10:59 pm

Nonstop4h 26m

Ontario

Mon 9/14

1:56 pm-12:59 am

1 stop9h 03m

$249

ChicagoOntario

ORD Chicago O'Hare Intl - ONT Ontario

ORDONT

Chicago O'Hare Intl

Wed 9/9

8:33 pm-10:59 pm

Nonstop4h 26m

Ontario

Thu 9/10

9:01 am-8:26 pm

1 stop9h 25m

$249

ChicagoOntario

ORD Chicago O'Hare Intl - ONT Ontario

ORDONT

Chicago O'Hare Intl

Sat 9/26

6:30 am-10:30 am

1 stop6h 00m

Ontario

Mon 9/28

7:59 pm-6:20 am

1 stop8h 21m

$249

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Michigan to Ontario

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Ontario?

In general, July is the cheapest month to fly from Michigan to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $402. If you aren’t able to travel during the month of July, then book flights to Ontario from Michigan during October instead. Flights to Ontario in October, while not as cheap as those in July, still average around $409.

How far in advance should I book a flight from Michigan to Ontario?

You are more likely to see cheaper flights to Ontario from Michigan when booking weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around $468 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ontario from Michigan for as low as $394 on momondo.

Can stopping save me money on Michigan to Ontario flights?

You could potentially save up to 47% on your flight if you consider stops on a Michigan to Ontario flight.

Cheap Michigan to Ontario flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Michigan to Ontario

Best Price Found	$61
Fastest flight time	4h 10m
Direct flights	Every day
Airports in Ontario	1 airport

The best one-way flight to Ontario from Michigan in the past 72 hours is $61. The best round-trip flight deal from Michigan to Ontario found on momondo in the last 72 hours is $148.

The fastest flight from Michigan to Ontario takes 4h 10m

Direct flights go from Michigan to Ontario every day.

There is 1 airport in Ontario. From Michigan there are direct flights to Ontario (ONT).

Search flight deals

Frequently asked questions about flying from Michigan to Ontario

When did momondo last update prices for flights from Michigan to Ontario Airport?
Prices for flights from Michigan to Ontario Airport refresh daily.
How many operators does momondo search for flights from Michigan to Ontario Airport?
The number of operators available for flights from Michigan to Ontario Airport is 5 as of August 2026.
How old do you have to be to fly from Michigan to Ontario Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Michigan to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The travel and health documents required for your trip to Ontario Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ontario Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Michigan to Ontario

Compare and see reviews for airlines that fly from Michigan to Ontario with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $117	Free Cancellation	Rating 5.6 2,660 reviews	Search Frontier flights
Delta	PriceFrom $277	Free Cancellation	Rating 7.8 8,502 reviews	Search Delta flights
American Airlines	PriceFrom $296	Free Cancellation	Rating 7.1 11,968 reviews	Search American Airlines flights
United Airlines	PriceFrom $317	Free Cancellation	Rating 7.4 10,102 reviews	Search United Airlines flights
Southwest	PriceFrom $360	Free Cancellation	Rating 8.0 4,215 reviews	Search Southwest flights

Why use momondo?

Why should I use momondo to find a flight deal from Michigan to Ontario?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Ontario from Michigan.

Can I find flights from Michigan to Ontario with flexible booking policies on momondo?

All flight searches from Michigan to Ontario on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Michigan to Ontario?

momondo helps you find the best flight between Michigan and Ontario by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Michigan to Ontario right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Michigan to Ontario flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your Ontario trip

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Cheap flights from Michigan to Los Angeles from $61

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Michigan to Los Angeles departing on 9/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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American Airlines flights from Michigan to Ontario

Our best American Airlines deals on Michigan to Ontario flight tickets

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Our best Frontier deals on Michigan to Ontario flight tickets

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How to get the cheapest flight ticket from Michigan to Ontario

What is the cheapest month to fly to Ontario?

How far in advance should I book a flight from Michigan to Ontario?

Can stopping save me money on Michigan to Ontario flights?

What is the cheapest airline that flies from Michigan to Ontario?

What airlines fly to Ontario?

How many flights depart from Michigan to Ontario on average per week?

How long does it take to fly to Ontario?

Cheap Michigan to Ontario flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Airports in Ontario

Frequently asked questions about flying from Michigan to Ontario

Best airlines flying from Michigan to Ontario

Compare and see reviews for airlines that fly from Michigan to Ontario with momondo

Why use momondo?

An easier way to manage your Ontario trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing California

Fly your favorite airline to Los Angeles

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

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List of cabin classes available on flights landing in Los Angeles. Availability may vary depending on flight origin and airline.

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