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Ontario International Airport to Boston flight
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Cheap Flights from Ontario International Airport to Boston

Search for flights from Ontario International Airport to Boston and check out affordable one-way and round-trip options.

  • One way
  • Round-trip
sortSort by: Lowest Price
  • Sort by: Lowest Price
  • Sort by: Earliest Flight
      • ONT22:59
        13h 17m
        2 stops
        BOS15:16
        Ontario - Boston|Mon, May 6|Frontier Airlines
        $81$142
        43% OFF
        43% OFF
        $142$81
      • ONT12:39
        17h 47m
        2 stops
        BOS09:26
        Ontario - Boston|Wed, May 15|Frontier Airlines
        $87$142
        39% OFF
        39% OFF
        $142$87
      • ONT00:59
        27h 30m
        2 stops
        BOS07:29
        Ontario - Boston|Mon, May 20|Frontier Airlines
        $95$142
        33% OFF
        33% OFF
        $142$95
      • ONT00:59
        27h 22m
        2 stops
        BOS07:21
        Ontario - Boston|Tue, May 14|Frontier Airlines
        $97
        $97
      • ONT00:59
        27h 22m
        2 stops
        BOS07:21
        Ontario - Boston|Tue, May 7|Frontier Airlines
        $98
        $98
      • ONT07:04
        23h 39m
        2 stops
        BOS09:43
        Ontario - Boston|Sat, May 18|Frontier Airlines
        $103
        $103
      • ONT00:59
        27h 30m
        2 stops
        BOS07:29
        Ontario - Boston|Wed, May 22|Frontier Airlines
        $104
        $104
      • ONT00:59
        29h 13m
        2 stops
        BOS09:12
        Ontario - Boston|Tue, May 21|Frontier Airlines
        $106
        $106
      • ONT00:59
        29h 32m
        2 stops
        BOS09:31
        Ontario - Boston|Mon, May 13|Frontier Airlines
        $107
        $107
      • ONT00:59
        28h 58m
        2 stops
        BOS08:57
        Ontario - Boston|Fri, May 17|Frontier Airlines
        $114
        $114
      • ONT13:00
        3h 5m
        Direct
        BOS14:00
        Los Angeles - Boston|Wed, May 8|Frontier Airlines
        Find More Flights
        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 Boston

See which airlines fly from Ontario International Airport to Boston. Find the airline that best meets your travel needs by comparing prices and treat yourself to an enjoyable journey.

Frontier Airlines
From $81
Delta Air Lines
From $128
Alaska Airlines
From $136
Jetblue Airways
From $146
United Airlines
From $182
American Airlines
From $225
Southwest Airlines
From $241
ANA airlines
Find more flights and airlines

Flight Info of Flights from Ontario International Airport to Boston

Cheapest round-trip ticket price

$195

Cheapest nonstop flight price

$62

Off-season for travel

December

Peak season for travel

July

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