$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 8/11. 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$637
London
London2 stops$994
Ottawa
Ottawa1 stop$637
London
London2 stops$994

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

Thu, Sep 10 - Tue, Sep 15
American Airlines Logo
8:14 pm - 10:59 am
MKE
-
YYZ
13h 45m
1 stop
American Airlines Logo
6:30 am - 8:03 pm
YYZ
-
MKE
14h 33m
1 stop
$398American Airlines
Tue, Aug 25 - Sat, Aug 29
American Airlines Logo
8:20 am - 11:29 pm
MKE
-
YYZ
14h 09m
1 stop
American Airlines Logo
1:15 pm - 7:59 pm
YYZ
-
MKE
7h 44m
1 stop
$416American Airlines
Tue, Jul 21 - Tue, Jul 28
American Airlines Logo
6:01 am - 2:34 pm
MKE
-
YYZ
7h 33m
1 stop
American Airlines Logo
7:17 am - 9:01 pm
YYZ
-
MKE
14h 44m
1 stop
$429American Airlines
Sat, Aug 29 - Wed, Sep 2
American Airlines Logo
2:42 pm - 11:29 pm
MKE
-
YYZ
7h 47m
1 stop
American Airlines Logo
11:39 am - 7:59 pm
YYZ
-
MKE
9h 20m
1 stop
$440American Airlines
Sat, Oct 24 - Wed, Oct 28
United Airlines Logo
6:00 am - 4:10 pm
MKE
-
YUL
9h 10m
1 stop
United Airlines Logo
6:10 am - 11:34 am
YUL
-
MKE
6h 24m
1 stop
$482United Airlines
Sat, Jun 27 - Sat, Jul 4
Lufthansa Logo
7:24 pm - 10:40 am
MKE
-
YUL
14h 16m
1 stop
Lufthansa Logo
4:55 pm - 8:56 pm
YUL
-
MKE
5h 01m
1 stop
$490Lufthansa
Sat, Oct 24 - Wed, Oct 28
United Airlines Logo
12:05 pm - 5:30 pm
MKE
-
YUL
4h 25m
1 stop
United Airlines Logo
9:30 am - 5:13 pm
YUL
-
MKE
8h 43m
2 stops
$491United Airlines
Sat, Jun 27 - Sat, Jul 4
Lufthansa Logo
7:24 pm - 10:40 am
MKE
-
YUL
14h 16m
1 stop
Lufthansa Logo
6:00 am - 2:36 pm
YUL
-
MKE
9h 36m
2 stops
$501Lufthansa
Sat, Jul 25 - Sat, Aug 1
Multiple Airlines Logo
1:39 pm - 5:20 am
MKE
-
YXU
38h 41m
3 stops
Multiple Airlines Logo
6:10 am - 7:31 pm
YXU
-
MKE
14h 21m
2 stops
$1,595Multiple Airlines
Sat, Jul 25 - Sat, Aug 1
Multiple Airlines Logo
1:39 pm - 5:20 am
MKE
-
YXU
38h 41m
3 stops
Multiple Airlines Logo
5:55 pm - 12:42 pm
YXU
-
MKE
19h 47m
3 stops
$1,604Multiple Airlines
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.

How much is a round-trip flight from Milwaukee to Region of Ontario?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Milwaukee to Region of Ontario departing in September.

What is the cheapest month to fly from Milwaukee to Ontario?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Milwaukee to Ontario, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Milwaukee to Ontario is September, when tickets cost $221 (return) on average. On the other hand, the most expensive months are December and February, when the average cost of round-trip tickets is $1,095 and $625 respectively.

Good to know

Low seasonSeptember
Cheapest flight$172
Best time to beat the crowds with an average 2% drop in price.
Most popular time to fly and prices are also 5% lower on average.
Flight from Milwaukee to Toronto

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 airlines flying 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 8396 reviews
8.5Crew
7.8Entertainment
7.2Food
8.1Boarding
7.8Comfort
Airline reviews

Be on time? When not on time a circling for over an hour offer more than 1 bag of chips to the passengers? It was a 7 hour flight by the time we got done.

4.0 OkayAndrew, Jun 2026
LAX - JFK
Read more Delta reviews

Be on time? When not on time a circling for over an hour offer more than 1 bag of chips to the passengers? It was a 7 hour flight by the time we got done.

Five hour delays every hour, I wish it were all at once

Flight delayed four separate times. I’m now one hour hours late to landing.

worst flight ever from Delta, it got delayed and kept on delaying..

Should never have had to go to Detroit from Orlando back to Tennessee!

Got rerouted from a straight flight from Orlando to Atlanta to Knoxville to a flight from Orlando to Detroit to Knoxville! Seriously!! Flight delay out of Detroit! Long day for what should have been a pretty easy travel day!

Two delays on two separate planes with parts they could not easily find and replace.

Checkin was good, fllight ws good. Onlly complaint is lack of foot on 6 hour flight from Seattle to Boston. Snacks were flimsy - chips and cookies. could have offered something more substantial for such a long flight. I know you can buy food in airport but for the price you pay for a ticket, they should step up for the passengers.

Only beverages were offered to first class and I thought the flight attendant could have also served the Delta Comfort as well instead of sitting down and staring at her phone and walking past all of us to the back of the plane to charge her phone more. There was a complete lack of turbulence and was safe enough for flights attendant to walk around in the front of the plane, collect trash and serve a few people water and turn off the seat belt light. Also didn’t enforce people putting their seats into the upright position and allowed two passengers to remain reclined during landing. They seemed out to lunch completely. Usually my experience on Delta is much better.

Long story short, it was one of the better flight experiences I've had in some time when compared with other airlines.

The entertainment they offer could use some games, and maybe they could add some cookies to the snack menu. And the automated messages are a bit repetitive. But it was comfortable temperature wise and the seats were comfortable. The crew is very polite and helpful

I felt scammed. The priced advertised was different than what I paid. I paid the whole some online. I then got a call 20 minutes later saying I need to paid 70 more person. She said the price online is not the guaranteed price.

Some crew were unfriendly or in some cases just straight up rude.

Putting people that close to the bathroom, where you have to look into the bathroom as people are exiting and entering was not great and the smell was also not great. I know the airlines are desperate for more chairs, but that seat is a crime.

one staffer was frustrated (it happen); the flight was late and the pilot mentioned they'll make amend but the snacks were the same, other than that the aircraft was clean and everything went smooth, no complaints

ticket agent lady wás very helpful , she arranged wheel chair for my elderly mother

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.

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

Information on your arrival and departure airports