Cheap flights from Portland to Ontario

Yes, it's possible to combine different modes of transport between Portland and Ontario thanks to our Virtual Interlining technology. Making use of not only flights but also trains and buses between Portland 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 Portland and Ontario with Southwest Airlines, Alaska Airlines, United Airlines, Delta Air Lines, American Airlines.

If you don’t have specific dates for your trip between Portland 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 Portland 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.

There are a number of airports in and around Portland. The main one is Portland International and other nearby airports include Seattle–Tacoma International, Portland International, Eugene, Roberts Field, Boeing Field, Kenmore Air Harbor Seaplane Base

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

Yes, Portland has great ground transport connections with the rest of the world. Our price graph doesn't just show prices for flights to and from Portland, it also shows buses and trains.

This depends on the airline's flight schedule. You can easily select your preferred departure time when you search on our website or mobile app. Choose the time of day you wish to depart from Portland, such as morning, afternoon, evening, or night, or select the exact hours for departure.

This depends on the airline's flight schedule. You can easily select your preferred arrival time when you search on our website or mobile app. Choose the time of day you wish to arrive at Ontario, such as morning, afternoon, evening, or night, or select the exact hours for arrival.

This depends on the airline's flight schedule. You can easily select your preferred departure time when you search on our website or mobile app. Choose the time of day you wish to depart from Portland, such as morning, afternoon, evening, or night, or select the exact hours for departure.

This depends on the airline's flight schedule. You can easily select your preferred arrival time when you search on our website or mobile app. Choose the time of day you wish to arrive at Ontario, such as morning, afternoon, evening, or night, or select the exact hours for arrival.