Flight Routes from Baltimore to Ontario

Trip type

Our cheapest offers for flights from Baltimore to Ontario

Here you can compare cheap flights from Baltimore (BWI) to Ontario (ONT) 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 Ontario. Prices and availability may change at any time.

Flight schedule from Baltimore (BWI) to Ontario (ONT)

Select a travel date in the flight schedule for the route from Baltimore (BWI) to Ontario (ONT) and compare affordable flight deals.

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Matching outbound flights4 of 4
fromto
dep.arr.
durationstopovers
  1. August 9 – 15, 2026
  2. August 16 – 22, 2026
  3. August 23 – 29, 2026
    1. BWIONT
      1 stopover
      1. American Airlines
    2. BWIONT
      1 stopover
      1. Alaska Airlines
    3. BWIONT
      nonstop
      1. Southwest Airlines
    4. BWIONT
      1 stopover
      1. Frontier Airlines

      Tips and tricks to help you find cheap flights from Baltimore to Ontario

      Favorite airline: Frontier Airlines
      40 % of flights from Baltimore to Ontario are booked with Frontier Airlines.
      Frontier Airlines
      40 %
      Delta
      20 %
      United Airlines
      20 %
      Favourite connection: via Denver
      Stopover flights on this route are especially popular via Denver, making up 86 % of bookings.
      Route
      bookings
      1 stopover Denver International Airport, CO
      12h 41min, from 323 $US
      86 %
      1 stopover Seattle-Tacoma International Airport, WA
      19h 54min, from 459 $US
      14 %

      Important flight information

      Flight information: Baltimore - Ontario

      Roundtrip from 311,98 $US
      Flight duration min. 07:45
      Return flight duration min. 05:35
      Distance 3670 km
      Flights per week 6
      Departure airport Airport Baltimore-Washington International-Thurgood Marshall Airport, MD (BWI)
      Arrival airport Airport Ontario-CA (ONT)
      Destination country Flights to United States
      Departure airport - Destination country Baltimore-Washington International-Thurgood Marshall Airport, MD - United States
      Alternative routes to United States
      Alternative flights to Ontario
      Flight destinations with a similar price
      Flight destinations with a similar price