Cheap flights from Ontario to Milwaukee from $228

Travelers frequently search for route combinations, such as Ontario and Guadalajara, Dallas, Las Vegas, San Francisco, Denver, Portland, Phoenix, Seattle, Salt Lake City, Sacramento, Atlanta, Minneapolis, Houston, Detroit, Chicago, Indianapolis, Austin, Mexico City, Cleveland, New York.

Travelers frequently search for route combinations, such as Milwaukee and Orlando, Las Vegas, Dallas, Seattle, Phoenix, Denver, Fort Lauderdale, Portland, Atlanta, Austin, Fort Myers, Los Angeles, London, El Paso, Miami, Philadelphia, San Jose, Santo Domingo, Guayaquil, Boise.

The main airport in Ontario is Ontario International. It is also served by Tijuana International, San Diego International, Ontario International, John Wayne, Palm Springs International, Hollywood Burbank, Long Beach, Santa Barbara Municipal, Meadows Field, Hawthorne Municipal.

The main airport in Milwaukee is General Mitchell International. It is also served by O Hare International, Chicago Midway International, Gerald R. Ford International, General Mitchell International, South Bend International, Appleton International, Chicago Rockford International, Dane County Regional, Green Bay–Austin Straubel International, Muskegon County.

Currently, you can fly between Ontario and Milwaukee with United Airlines, Hawaiian Airlines, Alaska Airlines.

If you don’t have specific dates for your trip between Ontario and Milwaukee, you can enter a date range into the departure and return fields. Most carriers on the Kiwi.com website allow you to search and book up to six months from the day of your search. Order the search results by the best, cheapest, or fastest route, or find the cheapest outbound and return combination in the pricing table.

Traveling between Ontario and Milwaukee, you can choose between direct (nonstop) flights or flights with one or more stops. You can select the number of stops on your journey, including an overnight stopover, and the duration of the stopover. What’s more, you can also select where you want to have your stopover. Want to say "Hi" to a friend in another city en route to your destination? Or fancy a quick round of shopping? Go Multi-City or Nomad and add places to your search that you wish to visit.

There are a number of airports in and around Ontario. The main one is Ontario International and other nearby airports include Tijuana International, San Diego International, Ontario International, John Wayne, Palm Springs International, Hollywood Burbank, Long Beach, Santa Barbara Municipal, Meadows Field, Hawthorne Municipal

There are a number of airports in and around Milwaukee. The main one is General Mitchell International and other nearby airports include O Hare International, Chicago Midway International, Gerald R. Ford International, General Mitchell International, South Bend International, Appleton International, Chicago Rockford International, Dane County Regional, Green Bay–Austin Straubel International, Muskegon County.