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Ontario International Airport to Trenton Mercer Airport flight
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Cheap Flights from Ontario International Airport to Trenton Mercer Airport

Search for flights from Los Angeles to Philadelphia. Find affordable one-way or round-trip flights.

  • One way
  • Round-trip
      • ONT20:11
        24h 48m
        2 stops
        TTN23:59
        Ontario - Philadelphia|Thu, Jan 23|Frontier Airlines
        US$74US$123
        40% OFF
        40% OFF
        US$123US$74

        Choose Frontier Airlines flights from Ontario to Philadelphia.The one-way connecting flight with Frontier Airlines departs from Ontario International Airport on Thu, Jan 23, arriving at Trenton Mercer Airport.One-way Prices start from US$74 including taxes and charges.

      • ONT12:34
        18h 56m
        2 stops
        TTN10:30
        Ontario - Philadelphia|Wed, Jan 8|Frontier Airlines
        US$85US$123
        31% OFF
        31% OFF
        US$123US$85

        Choose Frontier Airlines flights from Ontario to Philadelphia.The one-way connecting flight with Frontier Airlines departs from Ontario International Airport on Wed, Jan 8, arriving at Trenton Mercer Airport.One-way Prices start from US$85 including taxes and charges.

      • ONT12:34
        19h 3m
        2 stops
        TTN10:37
        Ontario - Philadelphia|Wed, Jan 22|Frontier Airlines
        US$93US$123
        24% OFF
        24% OFF
        US$123US$93

        Choose Frontier Airlines flights from Ontario to Philadelphia.The one-way connecting flight with Frontier Airlines departs from Ontario International Airport on Wed, Jan 22, arriving at Trenton Mercer Airport.One-way Prices start from US$93 including taxes and charges.

      • ONT11:58
        30h 37m
        2 stops
        TTN21:35
        Ontario - Philadelphia|Mon, Jan 13|Frontier Airlines
        US$100
        US$100

        Choose Frontier Airlines flights from Ontario to Philadelphia.The one-way connecting flight with Frontier Airlines departs from Ontario International Airport on Mon, Jan 13, arriving at Trenton Mercer Airport.One-way Prices start from US$100 including taxes and charges.

      • ONT17:13
        12h 45m
        2 stops
        TTN08:58
        Ontario - Philadelphia|Mon, Mar 3|Frontier Airlines
        US$100
        US$100

        Choose Frontier Airlines flights from Ontario to Philadelphia.The one-way connecting flight with Frontier Airlines departs from Ontario International Airport on Mon, Mar 3, arriving at Trenton Mercer Airport.One-way Prices start from US$100 including taxes and charges.

      • ONT06:45
        24h 45m
        2 stops
        TTN10:30
        Ontario - Philadelphia|Thu, Jan 9|Frontier Airlines
        US$103
        US$103

        Choose Frontier Airlines flights from Ontario to Philadelphia.The one-way connecting flight with Frontier Airlines departs from Ontario International Airport on Thu, Jan 9, arriving at Trenton Mercer Airport.One-way Prices start from US$103 including taxes and charges.

      • ONT20:11
        24h 48m
        2 stops
        TTN23:59
        Ontario - Philadelphia|Thu, Jan 16|Frontier Airlines
        US$104
        US$104

        Choose Frontier Airlines flights from Ontario to Philadelphia.The one-way connecting flight with Frontier Airlines departs from Ontario International Airport on Thu, Jan 16, arriving at Trenton Mercer Airport.One-way Prices start from US$104 including taxes and charges.

      • ONT09:02
        22h 35m
        2 stops
        TTN10:37
        Ontario - Philadelphia|Thu, Jan 30|Frontier Airlines
        US$105
        US$105

        Choose Frontier Airlines flights from Ontario to Philadelphia.The one-way connecting flight with Frontier Airlines departs from Ontario International Airport on Thu, Jan 30, arriving at Trenton Mercer Airport.One-way Prices start from US$105 including taxes and charges.

      • ONT16:39
        36h 10m
        2 stops
        TTN07:49
        Ontario - Philadelphia|Thu, Mar 6|Frontier Airlines
        US$108
        US$108

        Choose Frontier Airlines flights from Ontario to Philadelphia.The one-way connecting flight with Frontier Airlines departs from Ontario International Airport on Thu, Mar 6, arriving at Trenton Mercer Airport.One-way Prices start from US$108 including taxes and charges.

      • ONT07:45
        23h 52m
        2 stops
        TTN10:37
        Ontario - Philadelphia|Wed, Jan 15|Frontier Airlines
        US$110
        US$110

        Choose Frontier Airlines flights from Ontario to Philadelphia.The one-way connecting flight with Frontier Airlines departs from Ontario International Airport on Wed, Jan 15, arriving at Trenton Mercer Airport.One-way Prices start from US$110 including taxes and charges.

      • ONT01:00 pm
        3h 5m
        Nonstop
        TTN02:00 pm
        Los Angeles - Philadelphia|Sat, Jan 4|Frontier Airlines
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        Find More Flights

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Selected Airlines from Ontario International Airport to Trenton Mercer Airport

View airlines operating flights from Los Angeles to Philadelphia. Compare prices and find the airline that meets your travel needs to enjoy a comfortable journey.

Frontier Airlines
From US$74
Southwest Airlines
From US$284
United Airlines
From US$523

Find more flights and airlines

Find Cheaper Flights from Los Angeles to Philadelphia

Explore other flights from Los Angeles to Philadelphia. Find the best alternative flight.

  • Cheapest
    Frontier Airlines
    LAX
    21:30
    29h 44m
    1 transfer
    PHL
    06:14
    Los Angeles International Airport - Philadelphia International Airport
    Tue, Feb 11Frontier Airlines
    US$61
  • Frontier Airlines
    LAX
    14:58
    16h 39m
    2 transfer
    TTN
    10:37
    Los Angeles International Airport - Trenton Mercer Airport
    Thu, Jan 23Frontier Airlines
    US$74
  • Frontier Airlines
    LAX
    14:58
    16h 39m
    2 transfer
    TTN
    10:37
    Los Angeles International Airport - Trenton Mercer Airport
    Thu, Jan 23Frontier Airlines
    US$74
    Find More Flights

Ontario International Airport to Trenton Mercer Airport Flights Info

Flight distance3,820.08 km

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