Cheap flights from Boston, MA to Ontario, CA

Travelers frequently search for route combinations, such as Boston and London, Paris, Orlando, Barcelona, Rome, Madrid, Dublin, Athens, Lisbon, Denver, Prague, Miami, Vienna, Amsterdam, Milan, Munich, Fort Lauderdale, Berlin, Istanbul, Raleigh.

Travelers frequently search for route combinations, such as Ontario and Denver, Orlando, Austin, Atlanta, Sacramento, Seattle, San Francisco, Washington, D.C., San Jose, San Antonio, Raleigh, Phoenix, Charlotte, Portland, Detroit, Philadelphia, Las Vegas, Oakland, Nashville, Chicago.

The main airport in Boston is Logan International. It is also served by Logan International, Bradley International, Rhode Island T. F. Green Int'l Airport, Portland International Jetport, Manchester–Boston Regional, Albany International, Augusta State, Lebanon Municipal, Portsmouth International Airport at Pease, Barnstable Municipal.

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, Imperial County, Meadows Field.

Yes, it's possible to combine different modes of transport between Boston and Ontario thanks to our Virtual Interlining technology. Making use of not only flights but also trains and buses between Boston and Ontario can give rise to new adventures. Read more about how Virtual Interlining works on Kiwi.com Stories.

Virtual Interlining provides a revolutionary way of traveling. You can combine different modes of transport like flights, trains, and buses into one itinerary. And this often saves money. Thanks to the world's largest carrier database, the Kiwi.com search function enables anyone to mix and match different modes of transport easily.

Currently, you can fly between Boston and Ontario with Frontier Airlines, JetBlue Airways, Spirit Airlines, Alaska Airlines, United Airlines.

If you don’t have specific dates for your trip between Boston and Ontario, 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 Boston and Ontario, 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.