Cheap Flights from Milwaukee (MKE) to Ontario (ONT)

View AU$213 flight on Tue, 13 Jan. 2026Opens in a new window

Popular airlines from General Mitchell Intl. Airport (MKE) to Los Angeles - Ontario Intl. Airport (ONT)

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Cheap Flights from Milwaukee (MKE) to Ontario (ONT)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Find the cheapest month to fly from Milwaukee (MKE) to Ontario (ONT)

November is typically the cheapest month to fly

From AU$278 - AU$1,143 per traveller.

Graph displaying average flight prices per month

Flight from Milwaukee to Ontario route information
Origin airport
General Mitchell Intl.
Destination airport
Los Angeles - Ontario Intl.
Distance
2732 km

Your quick guide to flights from Milwaukee to Ontario

Pick up great flights from Milwaukee to Ontario

With Expedia, you have your pick of flights a day with 20 airlines covering flights from Milwaukee to Ontario. Whether you’re on a business trip, a family holiday or a luxury break, just enter your travel dates, hit search then check out your choice of flights. Select from return, one way or multi-city flights, and use the advance search tool if you want a direct or refundable flight. You can narrow your search to show you just your preferred cabin class and airline, too. It’s all easy. You can book direct flights from Milwaukee to Ontario that take around hours.

Find cheap flights from Milwaukee to Ontario

From the great flight deals with prices currently ranging from to , you can choose to see the cheapest flights first. Generally, you can book the cheapest flights from Milwaukee to Ontario around 4 to 6 weeks in advance. If your travel dates are flexible, try to avoid weekends and peak seasons – when you are more likely to grab the lowest prices. Even last minute, there are some impressive deals. The cheapest time to fly to Ontario is normally in .

Reasons to book your flight from Milwaukee to Ontario with Expedia

Expedia makes it easy to find, book, and travel, with everything you need all in one place. When you enter your travel details, find fantastic deals just for you on flight tickets from Milwaukee to Ontario across all the main airline carriers, so you can save time, dollars, and hassle finding the perfect flight. If you think your plans could change, choose refundable flights so any changes won’t cost you more. Book your flight to Ontario right now and, if you join Expedia Rewards, you earn points this time and every time you travel with Expedia.

Frequently asked questions

How much is a flight from Mitchell Intl. Airport to Ontario Airport?
The lowest price advertised for a round-trip flight from MKE to Ontario Airport is . But you better move fast. This figure is based on fares listed within the last 7 days on Expedia for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from MKE to ONT?
The majority of flights can be cancelled online, but whether or not you are charged a fee all comes down to your airline. If you do have to cancel your getaway, follow the instructions in the Customer Service Portal.
How do I find cheap flights from General Mitchell Intl. Airport (MKE) to Los Angeles - Ontario Intl. Airport (ONT) that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Mitchell Intl. Airport to Los Angeles - Ontario Intl. Airport (ONT) flights, you'll see a "no change fees" filter for you to select.
How far is the flight from General Mitchell Intl. Airport (MKE) to ONT?
It's around 2 800 kilometres from Milwaukee to Ontario, so expect to be up in the air for a while. Keep yourself occupied by packing things like crossword puzzles or the latest bestseller.
Which airlines fly direct from MKE to Los Angeles - Ontario Intl. Airport (ONT)?
You won't find any airlines operating directly between Mitchell Intl. Airport and ONT, so be ready to make at least one stop on your journey. A layover, whether short or long, can be a nice way to break up a trip!
Are General Mitchell Intl. Airport (MKE) to ONT flight tickets cheaper when they're purchased at the last minute?
It is possible to nab an awesome last-minute deal from General Mitchell Intl. Airport (MKE) to Ontario Airport, but it can also be hit-or-miss. As many airlines release seats up to 12 months in advance, it's worth keeping an eye on fares early and being ready to book when you see a good bargain. Expedia compares carrier prices and updates flight deals often, so you can be sure you're always getting the latest offers.

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Ontario Flight Deals

Los Angeles

Milwaukee to Los Angeles Intl.
AU$461.70
*Available to Expedia members.