Cheap flights from Ontario

Popular trips from Ontario

  1. Boston
    $255
    Mar 5 — Mar 11
    1 stop 10 hr 21 min United
  2. Paris
    $557
    Feb 16 — Feb 23
    2 stops 18 hr 30 min Lufthansa, United
  3. Dallas
    $58
    Feb 21 — Feb 28
    Nonstop 3 hr 4 min Frontier
  4. Hong Kong
    $638
    Mar 2 — Mar 10
    2 stops 23 hr 40 min Delta, Korean Air
  5. London
    $572
    Mar 2 — Mar 11
    2 stops 23 hr 31 min American, British Airways
  6. Seattle
    $157
    Feb 14 — Feb 21
    Nonstop 2 hr 50 min Alaska

Find cheap flights from Ontario to anywhere

Popular airlines with direct flights from Ontario

  • Southwest
    Fly from Ontario (ONT)
    • Sacramento
      Direct flights every day
      1 hr 20 min +
    • Las Vegas
      Direct flights every day
      1 hr 5 min +
    • Oakland
      Direct flights every day
      1 hr 15 min +
    • Phoenix
      Direct flights every day
      1 hr 10 min +
    • Denver
      Direct flights every day
      2 hr 10 min +
  • Frontier
    Fly from Ontario (ONT)
    • Denver
      Direct flights every day
      2 hr 20 min +
    • Las Vegas
      Direct flights every day
      1 hr 11 min +
    • Seattle
      Direct flights every day
      2 hr 50 min +
    • Dallas
      Direct flights every Mon, Thu, Fri, Sat, Sun
      3 hr 15 min +
    • Portland
      Direct flights every Mon, Thu, Fri, Sat, Sun
      2 hr 18 min +
  • United
    Fly from Ontario (ONT)
    • San Francisco
      Direct flights every day
      1 hr 19 min +
    • Denver
      Direct flights every day
      2 hr 17 min +
    • Chicago
      Direct flights every day
      4 hr 3 min +
    • Houston
      Direct flights every day
      3 hr 15 min +
  • Volaris
    Fly from Ontario (ONT)
    • Guadalajara
      Direct flights every day
      3 hr 5 min +
    • San José del Cabo
      Direct flights every Mon, Thu, Fri, Sat, Sun
      2 hr 24 min +
    • Morelia
      Direct flights every Tue, Thu, Sat, Sun
      3 hr 7 min +
    • Leon
      Direct flights every Mon, Wed, Fri
      3 hr 1 min +
  • American
    Fly from Ontario (ONT)
    • Dallas
      Direct flights every day
      3 hr 1 min +
    • Phoenix
      Direct flights every day
      1 hr 16 min +
    • Charlotte
      Direct flights every day
      4 hr 41 min +
  • Delta
    Fly from Ontario (ONT)
    • Salt Lake City
      Direct flights every day
      1 hr 43 min +
    • Seattle
      Direct flights every day
      2 hr 45 min +
    • Atlanta
      Direct flights every day
      4 hr 22 min +

Popular airports near Ontario

  • Ontario International Airport (ONT)
    Ontario United States 11 min 2 mi
  • Los Angeles International Airport (LAX)
    Los Angeles United States 1 hr 7 min 44 mi
  • Tijuana International Airport (TIJ)
    Tijuana Mexico 2 hr 17 min 112 mi
  • San Diego International Airport (SAN)
    San Diego United States 1 hr 51 min 95 mi

Frequently asked questions about flying from Ontario

What counts as the best airline for your flights from Ontario really depends on your individual needs. You may have a favorite carrier or a loyalty program you like, but price, convenience, and airports served also come into play. Flexibility and booking terms – Can you change flights if you want to stay longer or get a refund if you have to postpone your trip? – are also factors that help determine which airline is best to fly from Ontario.

In terms of direct flights, Southwest is the most popular, flying directly to 12 cities. Southwest flies from Ontario International Airport (ONT) .

Other popular airlines flying from Ontario are Frontier, United, Volaris, American, Delta.
  • Frontier flies directly to 7 cities. Frontier flies from Ontario International Airport (ONT) .
  • United flies directly to 4 cities. United flies from Ontario International Airport (ONT) .
  • Volaris flies directly to 4 cities. Volaris flies from Ontario International Airport (ONT) .
  • American flies directly to 3 cities. American flies from Ontario International Airport (ONT) .
  • Delta flies directly to 3 cities. Delta flies from Ontario International Airport (ONT) .
  • Southwest offers direct flights from Ontario to 12 cities. The most frequent destinations are: Sacramento, Las Vegas, Oakland, Phoenix and Denver.
  • Frontier offers direct flights from Ontario to 7 cities. The most frequent destinations are: Denver, Las Vegas, Seattle, Dallas and Portland.
  • United offers direct flights from Ontario to 4 cities. The most frequent destinations are: San Francisco, Denver, Chicago and Houston.
  • Volaris offers direct flights from Ontario to 4 cities. The most frequent destinations are: Guadalajara, San José del Cabo, Morelia and Leon.
  • American offers direct flights from Ontario to 3 cities. The most frequent destinations are: Dallas, Phoenix and Charlotte.
  • Delta offers direct flights from Ontario to 3 cities. The most frequent destinations are: Salt Lake City, Seattle and Atlanta.
Some popular flight destinations from Ontario are Chicago, Washington, Dallas, Phoenix, New York and Houston.
You can currently find cheap options like round-trip flights from Ontario to Boston starting at $255 for Mar 5 - Mar 11, round trips from Ontario to Paris starting at $557 for Feb 16 - Feb 23, and cheap flights from Ontario to Dallas starting at $58 for Feb 21 - Feb 28. Alternatively, explore more cheap flights to anywhere in the world .
Ontario is served by only one major airport: Ontario International Airport, 2 mi away from the city center.
It's usually recommended that you arrive at the airport 2 hours before departure time for a domestic flight and 3 hours before an international flight to allow for time to check in, clear security, and handle unexpected delays.
Check with your airline for any unique guidance and monitor the airport's website for updates or changes to procedures.
Finding last-minute flights from Ontario is easy on Google Flights.
Select a destination in the form on the top of the page, and use the calendar to pick travel dates and find the lowest ticket prices available.
You can even check for flights departing today.
To find the cheapest tickets, it’s usually best to book at least a few weeks in advance for domestic flights and a few months in advance for cheap international flights.
You can find cheap flight deals from Ontario to anywhere in the world on Google Flights.
Just enter Ontario as your departure city, choose Anywhere as the destination, and tap Explore .
You can pick specific dates or leave departure and return dates blank if your plans are flexible. The cheapest flight deals to popular destinations will appear.
You can filter the results to see only nonstop flights or flights under a certain price to more easily plan your perfect low cost trip.

If you already have a destination in mind, you can turn on price tracking to get alerts if the ticket price changes for a route or flight.

Search more flights

Find cheap flights on popular routes