$163 Find Cheap Flights from Milwaukee to Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Milwaukee to Ontario departing on 2/28. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Ontario

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Milwaukee to Ontario, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Milwaukee to Ontario, as well as popular online travel agencies
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Cheap Flights from Milwaukee to Ontario

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Ottawa
Ottawa1 stop$382
London
London2 stops$835
Ottawa
Ottawa1 stop$382
London
London2 stops$835

Book Cheap Milwaukee to Ontario Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Milwaukee to Ontario that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Milwaukee to Ontario

Mon, Apr 27 - Thu, Apr 30
United Airlines Logo
2:32 pm - 9:35 pm
MKE
-
YOW
6h 03m
1 stop
United Airlines Logo
10:44 am - 2:27 pm
YOW
-
MKE
4h 43m
1 stop
$382United Airlines
Mon, Mar 16 - Mon, Mar 23
Multiple Airlines Logo
8:20 pm - 2:20 pm
MKE
-
YYZ
17h 00m
1 stop
Multiple Airlines Logo
8:20 pm - 5:50 pm
YYZ
-
MKE
22h 30m
1 stop
$385Multiple Airlines
Wed, Mar 25 - Sun, Mar 29
United Airlines Logo
8:30 am - 4:30 pm
MKE
-
YOW
7h 00m
2 stops
United Airlines Logo
6:25 am - 11:32 am
YOW
-
MKE
6h 07m
1 stop
$387United Airlines
Mon, Apr 27 - Thu, Apr 30
United Airlines Logo
6:50 am - 1:59 pm
MKE
-
YOW
6h 09m
1 stop
United Airlines Logo
6:00 am - 2:27 pm
YOW
-
MKE
9h 27m
2 stops
$391United Airlines
Fri, Apr 3 - Mon, Apr 6
American Airlines Logo
5:04 am - 2:58 pm
MKE
-
YUL
8h 54m
1 stop
American Airlines Logo
3:45 pm - 10:51 am
YUL
-
MKE
20h 06m
1 stop
$397American Airlines
Mon, Apr 27 - Thu, Apr 30
United Airlines Logo
6:50 am - 1:59 pm
MKE
-
YOW
6h 09m
1 stop
United Airlines Logo
10:44 am - 2:27 pm
YOW
-
MKE
4h 43m
1 stop
$418United Airlines
Mon, Apr 27 - Thu, Apr 30
United Airlines Logo
9:43 am - 5:07 pm
MKE
-
YOW
6h 24m
1 stop
United Airlines Logo
6:00 am - 2:27 pm
YOW
-
MKE
9h 27m
2 stops
$428United Airlines
Sun, Mar 1 - Fri, May 1
American Airlines Logo
5:00 am - 9:29 pm
MKE
-
YYZ
15h 29m
1 stop
American Airlines Logo
6:28 pm - 7:45 am
YYZ
-
MKE
14h 17m
1 stop
$429American Airlines
Tue, Mar 10 - Fri, Mar 13
American Airlines Logo
5:48 pm - 1:45 pm
MKE
-
YUL
18h 57m
1 stop
American Airlines Logo
3:45 pm - 9:00 am
YUL
-
MKE
18h 15m
1 stop
$448American Airlines
Tue, Mar 10 - Tue, Mar 17
Air Canada Logo
8:30 am - 5:05 pm
MKE
-
YXU
7h 35m
2 stops
Air Canada Logo
5:10 am - 12:35 pm
YXU
-
MKE
8h 25m
2 stops
$835Air Canada
Booking Insights

KAYAK's insights & trends for Milwaukee to Ontario flights

Get data-powered insights and trends into flights from Milwaukee to Ontario to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Milwaukee to Ontario?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Milwaukee to Ontario were found on United Airlines ($382) and American Airlines ($429).

Good to know

Low seasonMarch
Cheapest flight$163
Best time to beat the crowds with an average 4% drop in price.
Most popular time to fly and prices are also 2% lower on average.
Flight from Milwaukee to Ottawa

FAQs - booking Ontario flights

  • How does KAYAK find such low prices on flights from Milwaukee to Ontario?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Milwaukee to Ontario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Milwaukee to Ontario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Milwaukee to Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Milwaukee to Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Milwaukee to Ontario with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Milwaukee to Ontario?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Milwaukee to Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 4 airlines serving from Milwaukee to Ontario

 
See real verified KAYAK customer reviews for airlines flying from Milwaukee to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Milwaukee to Ontario? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8130 reviews
7.9Comfort
7.8Entertainment
8.1Boarding
8.5Crew
7.2Food
Airline reviews

I didn't take this flight. I changed the flight. Why am I getting surveys and notifications on flights that I change. Seems like a defect with Kayak.

2.0 MediocreTodd, Jan 2026
IAH - ATL
Read more Delta reviews

I didn't take this flight. I changed the flight. Why am I getting surveys and notifications on flights that I change. Seems like a defect with Kayak.

Delta One is extraordinary. I fly business when somebody hires me. I just wonder why there is such a chasm between business class and the insanely inhumane and nonsensical coach. The seats are not large enough to fit even my tiny wife. We fly 10% of what we did because we don’t want to pay 5-10 k but for $400 it’s unbearable. It seems like the accountants took over and made stupid decisions. Screw in 20 extra seats and make it so unbearable that people fly 90% less. Just put the damn price up and put some proper chairs in. But business, yay.

Timing, quality of service, promptness and courtesy of the staff

It was last minute due to weather - considering - it was amazing! Good smiles, friendly staff and they were making sure we knew what was going on when and where.

delta last minute gave me a boarding pass for a different flight with no confirmation that they were changing it

The flight was comfortable and uneventful, which is what I desire

The service from the flight attendants were of supreme quality. They greeted and treated everyone with a wide smile. This is totally absent nowadays. Kudos to them!!!!

Excellent flight and got us around tough weather. Only issue was seat TV did not work and crew tried to reboot.

Very large passenger too space from my own seat. Arm board couldn’t be lowered because of his size. It wads very uncomfortable trip, as the flight was full couldn’t move anywhere having back pain because of the position in which I was the entire flight.

was sitting in the jet bridge for 10 minutes in -20 degree weather waiting for my bag

The flight was delayed by two de-icings. The seatbelt did not work correctly. It did not stay tight.

Not United Airlines' fault. It's ORL airport's fault.

United overall experience is great these days. Airport experience was very organized. Staff on flight were great. App and information as good as it gets.

Very nice flight love the small aircraft. We had a wonderful flight attendant. Nice to see someone that really enjoys her job. Don't have her name but had a southern accent.

Seats in waiting area and on plane hard as rock. Fast internet on the flight was great! Crew was kind.

Not the fault of United—weather, reroute around weather, time sitting on tarmac, arrived couple hours late, too late for train into city necessitating a much pricier cab but weather…can’t be helped.

Flight was good but there are way to many announcements for credit cards etc.

I had no checked baggage but was required to hand over carry on baggage at the door of the plane. There was a lot of overboard space in the plane and I was one of the last ones. I ran to get my carry on but it was gone. I was given back at the plane door in Toronto, so the wait was not as long as it would have been at the carousel.

We had a layover from YVR to Denver. We bought 4 bottles of Absolut Vodka at the YVR Duty Free for $116.20, after going through security and American Customs Pre Clearance at YVR, Vancouver. When we landed in Denver, United put us behind the American Customs as well as TSA again for some reason. We were forced to go through American Customs and TSA again. TSA confiscated our rightfully owned Duty Free Absolut Vodka bottles. Because United incorrectly forced our flight behind American border and TSA again, we missed the connecting flight. After United put us on a later flight, we eventually arrived in Chicago very late, with hardly any sleep. I am looking for compensation from United for our incorrectly confiscated Absolut Vodka bottles worth $116.20, as well as compensation for incorrectly putting us behind American Customs and TSA again, causing us to miss our connecting flight, making us arrive extremely late in Chicago.

From the first moment you interact with United Airlines, you can expect nothing less but extreme frustration. The baggage handler at the bag drop seems completely unbothered by the presence of customers waiting in line. No help was extended to load the baggage whatsoever. And if any of your bags is overweight by 0.01 pound they will make you re-distribute everything in your suitcase just to play power trip. When it was time to board no help was extended to customers to locate their seats. Moreover. It was a chaotic mess at the gate when it was unclear who should board first and everyone just bunched up, trying to get on the plane. I am sure the crew was doing their best to perform their jobs while being paid their wages however it shouldn’t be that hard to smile once or twice when you’re in the business if serving customers. It is a shame for the United States of America to have a flagship carrier of such low caliber. Our flight was also delayed by about an hour and a half due to further delays prior to our inbound flight. Being someone who has travelled for both business and leisure in Asia, Europe, and South America I have never experienced such poor quality of service.

Update to handle the delay was very bad, crews no smiles or welcome or thanks. Don’t care attitude

It would be nice to have some low carb options in the snacks.

I was trying to take 2 one and a half hour one way trips and I experienced almost 20 delays over the course of those two trips. Only a few of them were due to weather the rest was disorganization

No gates avail at DFW so our incoming had to wait 30 mins for a plane to push back because they Had mechanical. We boarded 90 mins delayed and then we had a mechanical. Come on American…do better. Also at my seat the tray table had not been cleaned. Floor had not been cleaned. But captain and flight Att were very picture and apologetic.

Crew was helpful and cheerful especially when they had no refreshments to work with. The plane was never serviced and had nothing but limited water and coffee onboard. For the price point, a concern of services.

Flight was smooth, quick and felt safe. The 2 delays not happening would have been better but I guess that happens in the airline industry

Flight was canceled. I asked to be rerouted to OKC and then took an Uber.

AA did not allow to board a flight because my connecting flight from DFW had been canceled. I got on another flight to another city. No service on the plane and I did not use their entertainment system.

On time on a day with lots of weather cancellations on other flights. Thank you for getting me home during a winter storm!

Don't change gate multiple times make people run across the airport. Announce delays in a timely manner. Have maintenance crew ready. Don't delay and keep passengers on the plane for 3 hrs. on tarmac.

Everything was good except for flight delay, but it was because of the snow storm in the arrival airport.

The flight was cancelled less than 24 hours before departure. The alternate flight was a day later going from Grenada to Toronto to Vancouver to Calgary to Montreal. 2 days in the air. Not serious, Very bad service

I like the wider seats, Plus lots of legroom, Lacking entertainment, no tv or screen to play with

Liked in-flight wifi Did not like - nothing to complain, really. All good

The keg from Edmonton to Toronto My wife found it very cold. Other than that great flight.

Smooth flight Staff were courteous and welcoming upon entering and exiting the plane Pilot and crew provided frequent updates Leg space was not pleasant but manageable

Everything was good except I was a bit disappointed that I had to pay US $150 for bags.

Flight itself good .Landing at terminal3 and connections to terminal1,it is connections nightmare,specially for disable person

The seats very Uncomfortable, no meal and no entertainment for a 4Hours flight. Smooth Flight, Great Take off and landing. Superb crew!

The flight attendants were super! They created a cosy and warm flight atmosphere!

Everything you need to know for your flight from Milwaukee to Ontario

Information on your arrival and departure airports