Flights from Ontario to United States

Our cheapest offers for flights from Ontario to United States

Here you can compare cheap flights from Ontario (ONT) to United States for one-way or return trips. The following offers were searched for and found on idealo during the last few days. Or start your own flight search to United States. Prices and availability may change at any time.

  • Ontario (ONT)San Francisco (SFO)
    non-stop flights:
    6–17 per day
    flight duration:
    at least
    1. Sun
    2. Mon
    3. Tue
    4. Wed
    5. Thu
    6. Fri
    7. Sat
    • United Airlines
    • Frontier Airlines
    from $115
    number of non-stop flights per airline and day of the week
    SunMonTueWedThuFriSat
    United Airlines5–165–165–165–165–165–165–16
    Frontier Airlines1111111
  • Ontario (ONT)Miami (MIA)
    non-stop flights:
    only flights with stopover
    flight duration:
    at least
    1. Sun
    2. Mon
    3. Tue
    4. Wed
    5. Thu
    6. Fri
    7. Sat
    • Delta Air Lines
    from $186
  • Ontario (ONT)Dallas (DFW)
    non-stop flights:
    5–10 per day
    flight duration:
    at least
    1. Sun
    2. Mon
    3. Tue
    4. Wed
    5. Thu
    6. Fri
    7. Sat
    • American Airlines
    • Frontier Airlines
    from $143
    number of non-stop flights per airline and day of the week
    SunMonTueWedThuFriSat
    American Airlines4–84–84–84–84–84–84–7
    Frontier Airlines1–21–21–21–21–211–2
  • Ontario (ONT)Atlanta (ATL)
    non-stop flights:
    2–3 per day
    flight duration:
    at least
    1. Sun
    2. Mon
    3. Tue
    4. Wed
    5. Thu
    6. Fri
    7. Sat
    • Delta Air Lines
    from $328
    number of non-stop flights per airline and day of the week
    SunMonTueWedThuFriSat
    Delta Air Lines2–32–32–32–32–32–32–3
Prices based on recent searches, subject to last-minute changes
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