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282 € Cheap Flights from Ontario International to Milwaukee General Mitchell

Compare Ontario International to Milwaukee General Mitchell flight deals

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Flight deals from Ontario International to Milwaukee General Mitchell

Looking for a cheap last-minute deal or the best return flight from Ontario International Airport to Milwaukee General Mitchell Airport? If you want to travel next month, return fares start from 282 €. Find the lowest prices on one-way and return tickets right here.
Milwaukee.282 € per passenger.Departing Sat, 22 Aug, returning Thu, 27 Aug.Return flight with United.Outbound indirect flight with United, departs from Ontario International on Sat, 22 Aug, arriving in Milwaukee General Mitchell.Inbound indirect flight with United, departs from Milwaukee General Mitchell on Thu, 27 Aug, arriving in Ontario International.Price includes taxes and charges.From 282 €, select.
Milwaukee.282 € per passenger.Departing Sat, 5 Sep, returning Tue, 8 Sep.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Sat, 5 Sep, arriving in Milwaukee General Mitchell.Inbound indirect flight with Southwest Airlines, departs from Milwaukee General Mitchell on Tue, 8 Sep, arriving in Ontario International.Price includes taxes and charges.From 282 €, select.
Milwaukee.282 € per passenger.Departing Thu, 5 Nov, returning Mon, 9 Nov.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Thu, 5 Nov, arriving in Milwaukee General Mitchell.Inbound indirect flight with Southwest Airlines, departs from Milwaukee General Mitchell on Mon, 9 Nov, arriving in Ontario International.Price includes taxes and charges.From 282 €, select.
Milwaukee.282 € per passenger.Departing Thu, 22 Oct, returning Mon, 26 Oct.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Thu, 22 Oct, arriving in Milwaukee General Mitchell.Inbound indirect flight with Southwest Airlines, departs from Milwaukee General Mitchell on Mon, 26 Oct, arriving in Ontario International.Price includes taxes and charges.From 282 €, select.
Milwaukee.283 € per passenger.Departing Mon, 28 Sep, returning Mon, 5 Oct.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Mon, 28 Sep, arriving in Milwaukee General Mitchell.Inbound indirect flight with Southwest Airlines, departs from Milwaukee General Mitchell on Mon, 5 Oct, arriving in Ontario International.Price includes taxes and charges.From 283 €, select.
Milwaukee.283 € per passenger.Departing Sat, 12 Dec, returning Mon, 14 Dec.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Sat, 12 Dec, arriving in Milwaukee General Mitchell.Inbound indirect flight with Southwest Airlines, departs from Milwaukee General Mitchell on Mon, 14 Dec, arriving in Ontario International.Price includes taxes and charges.From 283 €, select.
Milwaukee.284 € per passenger.Departing Mon, 24 Aug, returning Tue, 1 Sep.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Mon, 24 Aug, arriving in Milwaukee General Mitchell.Inbound indirect flight with Southwest Airlines, departs from Milwaukee General Mitchell on Tue, 1 Sep, arriving in Ontario International.Price includes taxes and charges.From 284 €, select.
Milwaukee.349 € per passenger.Departing Wed, 28 Oct, returning Sun, 1 Nov.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Wed, 28 Oct, arriving in Milwaukee General Mitchell.Inbound indirect flight with Southwest Airlines, departs from Milwaukee General Mitchell on Sun, 1 Nov, arriving in Ontario International.Price includes taxes and charges.From 349 €, select.
Milwaukee.355 € per passenger.Departing Fri, 20 Nov, returning Thu, 10 Dec.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Fri, 20 Nov, arriving in Milwaukee General Mitchell.Inbound indirect flight with Southwest Airlines, departs from Milwaukee General Mitchell on Thu, 10 Dec, arriving in Ontario International.Price includes taxes and charges.From 355 €, select.
Milwaukee.356 € per passenger.Departing Wed, 6 Jan, returning Fri, 8 Jan.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Wed, 6 Jan, arriving in Milwaukee General Mitchell.Inbound indirect flight with Southwest Airlines, departs from Milwaukee General Mitchell on Fri, 8 Jan, arriving in Ontario International.Price includes taxes and charges.From 356 €, select.
Milwaukee.481 € per passenger.Departing Thu, 1 Apr, returning Sun, 4 Apr.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Thu, 1 Apr, arriving in Milwaukee General Mitchell.Inbound indirect flight with Southwest Airlines, departs from Milwaukee General Mitchell on Sun, 4 Apr, arriving in Ontario International.Price includes taxes and charges.From 481 €, select.
Milwaukee.496 € per passenger.Departing Tue, 28 Jul, returning Wed, 5 Aug.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Tue, 28 Jul, arriving in Milwaukee General Mitchell.Inbound indirect flight with Southwest Airlines, departs from Milwaukee General Mitchell on Wed, 5 Aug, arriving in Ontario International.Price includes taxes and charges.From 496 €, select.
Milwaukee.528 € per passenger.Departing Sat, 25 Jul, returning Tue, 28 Jul.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Sat, 25 Jul, arriving in Milwaukee General Mitchell.Inbound indirect flight with Southwest Airlines, departs from Milwaukee General Mitchell on Tue, 28 Jul, arriving in Ontario International.Price includes taxes and charges.From 528 €, select.

Find the cheapest month to fly from Ontario International to Milwaukee General Mitchell

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Ontario International to Milwaukee General Mitchell flights are currently cheapest in August.
Jul
from 528 €
Aug
from 282 €
Sep
from 282 €
Oct
from 282 €
Nov
from 282 €
Dec
from 283 €
Jan
from 356 €
Feb
Find prices
Mar
Find prices
Apr
from 481 €
May
Find prices
Jun
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Ontario International to Milwaukee General Mitchell: Alternative routes

Compare routes from Ontario International to Milwaukee below. You may find an airport to fly into that's cheaper, faster, or easier than Milwaukee General Mitchell.

Milwaukee General Mitchell

10km from central Milwaukee
ClosestCheapest
from 282 €
Search flights

Ontario to Milwaukee: Flight information

The things to know before you go.
Cheapest flight found282 €
Cheapest month to flyOctober

Finding cheap flights from Ontario International to Milwaukee General Mitchell: Frequently asked questions

The best price we found for a return flight from Ontario International to Milwaukee General Mitchell is 282 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Ontario International to Milwaukee General Mitchell. But we found flights with one or more stops from 282 €.
As of July 2026, there are no flights flying from Ontario International to Milwaukee General Mitchell.
The cheapest month to fly from Ontario International to Milwaukee General Mitchell is usually October.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Ontario International Airport to Milwaukee General Mitchell Airport on Thursday, 22 October 2026.
No airlines currently offer direct flights between Ontario International Airport and Milwaukee General Mitchell Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Milwaukee General Mitchell but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Milwaukee is around 40 days in advance, so don’t leave your flight to the last minute.

Currently, Southwest Airlines offers the cheapest flight tickets to Milwaukee General Mitchell.

Travelling from Ontario International Airport (ONT) to Milwaukee General Mitchell Airport (MKE): what you need to know

  • Milwaukee's timezone is UTC-6, making Milwaukee two hours ahead of Ontario.

  • Your ONT to MKE flight won't wait if you're running late, so don't forget to check in on time. Arrive up to one hour in advance for domestic flights and two hours ahead when you're flying internationally.

  • Travelling during a peak time like July? Public holidays and other popular periods can lead to longer lines and delays at check-in and security. Play things extra safe and arrive up to four hours before an international flight and two hours before a domestic departure.

  • We make it simple to book a flight with a stopover. To see your options for tickets from Ontario International Airport to Milwaukee General Mitchell Airport, deselect 'Direct flights only.' Then, choose a flight with a stop long enough to tour the city of your choice. Some great stopovers between ONT and MKE include:

    • Denver International Airport

    • Phoenix Sky Harbour Airport

    • Harry Reid International Airport

How to find the cheapest flights from Ontario International Airport (ONT) to Milwaukee General Mitchell Airport (MKE)

  • The lowest price we've seen for a one-way Ontario International Airport to Milwaukee General Mitchell Airport flight is 141 €. A return fare is currently 282 €. Depending on the availability when you book, these fares may change.

  • Don't leave everything to the last moment. You're more likely to find cheap tickets from ONT to MKE if you book early. Airlines often offer some excellent early bird rates.

  • If you're flexible with your travel dates, use the 'Whole month' search function. It'll give you the lowest price across each month when looking for a flight from Ontario International Airport to Milwaukee General Mitchell Airport.

  • There's no need to check back in every day to see if fares have dropped when you set up a Price Alert. We'll let you know as soon as the price changes on cheap flights from ONT to MKE.

  • Select your preferred departure and arrival times, airlines and number of stops with the filters. Alternatively, sort your results by 'Cheapest' to find the best deals on flights from Ontario International Airport to Milwaukee General Mitchell Airport.

Handy information about Ontario International Airport (ONT)

  • The address for ONT is 2900 E. Airport Drive.

  • Ontario International Airport has an excellent on-time record, making delays less likely. Departures from ONT arrive at their destination as scheduled 83% of the time.

  • Central Ontario to Ontario International Airport is approximately 10 kilometres. Depending on traffic, it'll take about 15 minutes to get there if you're ride-sharing, catching a taxi or driving.

  • The trip when using public transport will take about 45 minutes.

  • Have an early flight from Ontario International Airport to Milwaukee General Mitchell Airport? Avoid the last-minute rush to the airport (and sneak in some extra precious sleep) by choosing one of these hotels close to ONT:

Arriving at Milwaukee General Mitchell Airport (MKE)

When to fly to Milwaukee General Mitchell Airport (MKE)

  • The quietest month for a flight from Ontario International Airport to Milwaukee General Mitchell Airport is March, while June is the most popular. Pick the ideal time to go to Milwaukee based on whether you prefer a more relaxed vibe or a faster pace.

  • When booking your flight from Ontario International Airport to Milwaukee General Mitchell Airport, think about the kind of weather you enjoy. July is the warmest month in Milwaukee, with the temperature ranging from 14ºC (57ºF) to 28ºC (82ºF).

  • January has average temperatures of between -14ºC (7ºF) and 1ºC (34ºF). Search for cheap tickets from ONT to MKE around that time if you like cooler conditions.

Explore more of the United States

  • You've visited Milwaukee, now it's time to discover other parts of the United States. Travel about 129 kilometres south to Chicago to check off its must-visit sights. From Millennium Park to Art Institute of Chicago and Willis Tower, you'll have a full itinerary ahead.

  • Indianapolis is another sought-after destination in the United States and is around 386 kilometres south of Milwaukee. No journey is complete without seeing Lucas Oil Stadium, Eiteljorg Museum and The Children's Museum of Indianapolis.

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.