$172 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 4/3. 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$392
London
London2 stops$859
Ottawa
Ottawa1 stop$392
London
London2 stops$859

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

Fri, Apr 3 - Sun, Apr 5
United Airlines Logo
2:32 pm - 9:35 pm
MKE
-
YOW
6h 03m
1 stop
United Airlines Logo
5:25 pm - 9:49 pm
YOW
-
MKE
5h 24m
1 stop
$392United Airlines
Wed, Apr 8 - Wed, Apr 15
American Airlines Logo
4:26 pm - 11:44 am
MKE
-
YUL
18h 18m
1 stop
American Airlines Logo
12:30 pm - 8:06 pm
YUL
-
MKE
8h 36m
1 stop
$396American Airlines
Fri, Apr 3 - Sun, Apr 5
United Airlines Logo
5:10 am - 4:38 pm
MKE
-
YOW
10h 28m
2 stops
United Airlines Logo
6:25 am - 10:00 am
YOW
-
MKE
4h 35m
1 stop
$402United 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
5:25 pm - 11:59 pm
YOW
-
MKE
7h 34m
1 stop
$403United Airlines
Wed, Apr 8 - Wed, Apr 15
American Airlines Logo
9:08 am - 9:37 pm
MKE
-
YUL
11h 29m
2 stops
American Airlines Logo
12:30 pm - 11:40 pm
YUL
-
MKE
12h 10m
1 stop
$406American Airlines
Wed, Apr 8 - Wed, Apr 15
American Airlines Logo
8:11 am - 9:37 pm
MKE
-
YUL
12h 26m
2 stops
American Airlines Logo
7:45 am - 6:00 pm
YUL
-
MKE
11h 15m
2 stops
$411American Airlines
Wed, Apr 8 - Sun, Apr 12
United Airlines Logo
6:50 am - 2:22 pm
MKE
-
YOW
6h 32m
2 stops
United Airlines Logo
5:25 pm - 9:49 pm
YOW
-
MKE
5h 24m
1 stop
$412United Airlines
Mon, Apr 27 - Thu, Apr 30
United Airlines Logo
10:45 am - 10:05 pm
MKE
-
YOW
10h 20m
2 stops
United Airlines Logo
10:44 am - 2:27 pm
YOW
-
MKE
4h 43m
1 stop
$413United Airlines
Tue, May 5 - Wed, May 6
United Airlines Logo
8:33 am - 1:59 pm
MKE
-
YOW
4h 26m
1 stop
United Airlines Logo
6:05 am - 10:04 am
YOW
-
MKE
4h 59m
1 stop
$414United Airlines
Sat, Apr 11 - Sat, Apr 18
Air Canada Logo
9:43 am - 5:07 pm
MKE
-
YOW
6h 24m
1 stop
Air Canada Logo
10:44 am - 6:47 pm
YOW
-
MKE
9h 03m
1 stop
$443Air 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 ($392) and American Airlines ($396).

Good to know

Low seasonSeptember
Cheapest flight$172
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly and prices are also 13% 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 8288 reviews
7.2Food
8.1Boarding
7.8Entertainment
7.9Comfort
8.5Crew
Airline reviews

We landed and sat on the tarmac for 45 minutes because they only have one gate at the airport and there was another plane running late so we had to wait

2.0 MediocreSusan, Mar 2026
JAX - ATL
Read more Delta reviews

We landed and sat on the tarmac for 45 minutes because they only have one gate at the airport and there was another plane running late so we had to wait

The WiFi was not working. That made for a long flight.

With Aeromexico it ended up good but with Delta it was bad because we did everything through Delta... Showed up at the Delta terminal... It was the wrong place! Nothing ever told us to go to the Aeromexico terminal. It said "in partnership with Aeromexico" but I was never instructed to check in with them or go to their terminal. We had to haul @$$ running through the airport and almost didn't make it thanks to this poor communication. 👎🏽

Absolutely no communication on why there's a delay and multiple flight time reschedules. I would have canceled the flight and drove back home if I known it was going to be rescheduled 3 or 4 times.

Another late night flight and MORE men belligerently drinking and yelling. I had to move from first to economy because they were so obnoxious and disruptive. Crazy to go from a cozy chair to cardboard when you were supposed to be in first. Delta allows was too much drinking which leads to belligerent behavior.

I was in first class and literally the men behind me were so aggressively loud I moved myself to economy. This has become so common on Delta - people using audio without headphones, and men on 12am / late night flights drinking and yelling to talk to each other which prevents anyone around them from resting. Pretty crazy to have to move from first to economy (poorer service, less comfort...). Wild wild. Looking into other airlines.

Love delta smaller commuter plane so no entertainment and paid wifi on MKE-LGA leg was extremely unreliable and slow

Stop changing gates. Stop cancelling flights Stop moving my seat.

Extremely disappointed with Delta. They canceled flight last minute and then I rebooked the other flights and with which were delayed as well

Could not get my connecting flight boarding pass until four hrs before departure! Ver annoying especially since the staff could not explain why!

Entertainment kept turning itself off. Gave up on watching a movie.

Wifi took a while to kick in and we had a maintenance issue that took over 40 mins at the gate in Washington before pulling back

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.

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!

Aging planer and NO wifi on a 14 hour day flight. Unless you are retired or don't need to work or be in touch with the world... The lack of Wifif really ruined the flight. And the old plane - really showing it's age, wasn't great

There was no beverage service and the only time I saw a crew member walk through the cabin is when we were preparing to land.

Our flight was delayed 3 times and this is why I am giving such low reviews. Everything else was okay but being in the airport at 4:30pm for my initial flight at 7pm to not leave until after 9:30pm is insane,

Flights were constantly delayed. CRW took 50 minutes to get bags

Flight has been delayed every time I've ever taken it. Seats uncomfortable. Children behind me yelling the entire flight. Some of this is out of their control but overall just consistently not a great experience.

Appreciate having multiple food options for allergies. Nice to have an extra seat between us for comfort.

Check in was rough because the check in crew did not know how to manage my international visa documents. Required a long process and 4 people to finally be able to proceed to security. They told us incorrect information several times before acknowledging we did indeed have everything we needed from the start.

Where do I start!! I was delayed with my flight from Dallas to Tampa. On the way back from Tampa to Dallas the flight was delayed over 4 hours+. I was put on another flight that was also delayed but not as long. Traveling on American Airlines is becoming exhausing.

There was no inflight service. Once we landed we were delayed to find a gate for an hour and a half which was 1/2 the total time in the air.

The gate got changed several times and the flight was delayed over an hour. Awful experience

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

Information on your arrival and departure airports