Flights to Ontario

Trip type

Our cheapest offers for flights to Ontario

Here you can compare cheap flights to Ontario (ONT) for either one-way or return trips. The following offers for Ontario were found on our flight search in the last days. Prices may vary depending on the flight route, date and availability.

  • San Francisco (SFO)Ontario (ONT)
    non-stop flights:
    5–16 per day
    flight duration:
    at least
    direct flight availability
    1. Sun
    2. Mon
    3. Tue
    4. Wed
    5. Thu
    6. Fri
    7. Sat
    airlines
    • United Airlines
    • Frontier Airlines
    from $109
    number of non-stop flights per airline and day of the week
    SunMonTueWedThuFriSat
    United Airlines5–156–156–135–155–155–135–15
    Frontier Airlines1001101
  • Dallas (DFW)Ontario (ONT)
    non-stop flights:
    8–14 per day
    flight duration:
    at least
    direct flight availability
    1. Sun
    2. Mon
    3. Tue
    4. Wed
    5. Thu
    6. Fri
    7. Sat
    airlines
    • American Airlines
    • Frontier Airlines
    • Volaris
    from $119
    number of non-stop flights per airline and day of the week
    SunMonTueWedThuFriSat
    American Airlines6–126–126–126–126–126–126–12
    Frontier Airlines1111111
    Volaris1111111
  • Baltimore (BWI)Ontario (ONT)
    non-stop flights:
    only flights with stopover
    flight duration:
    at least
    direct flight availability
    1. Sun
    2. Mon
    3. Tue
    4. Wed
    5. Thu
    6. Fri
    7. Sat
    airlines
    • Frontier Airlines
    • American Airlines
    • United Airlines
    • Delta Air Lines
    • Alaska Airlines
    from $384
Prices based on recent searches, subject to last-minute changes
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Most frequent connection from Ontario
Alternative routes to United States