Flights North America United States Ontario to United States

Cheap flights from Ontario to United States

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Easily compare round-trip flights from Ontario to United States

Below you can see the best fares for your round-trip flight route over the next three months. All fares were found on momondo this week. Browse the quickest and cheapest flights from Ontario to United States by changing tabs
Quickest
Cheapest
United Airlines
United Airlines
24 Jan
9:00 pm
ONT
Ontario airport
2h 15m
DEN
12:15 am
+1
Denver Intl airport
United Airlines
30 Jan
10:00 pm
DEN
Denver Intl airport
2h 26m
ONT
11:26 pm
Ontario airport
97 USD
Alaska Airlines
Alaska Airlines
08 Jan
9:00 pm
ONT
Ontario airport
2h 45m
SEA
11:45 pm
Seattle/Tacoma Intl airport
Alaska Airlines
14 Jan
9:00 pm
SEA
Seattle/Tacoma Intl airport
2h 35m
ONT
11:35 pm
Ontario airport
117 USD
United Airlines
United Airlines
04 Mar
9:00 pm
ONT
Ontario airport
4h 32m
1 Stop
SEA
1:32 am
+1
Seattle/Tacoma Intl airport
United Airlines
07 Mar
9:00 pm
SEA
Seattle/Tacoma Intl airport
2h 35m
ONT
11:35 pm
Ontario airport
126 USD
Alaska Airlines
Alaska Airlines
07 Jan
9:00 pm
ONT
Ontario airport
2h 20m
PDX
11:20 pm
Portland airport
Alaska Airlines
09 Jan
9:00 pm
PDX
Portland airport
2h 16m
ONT
11:16 pm
Ontario airport
147 USD
Frontier
Frontier
19 Dec
9:00 pm
ONT
Ontario airport
2h 25m
DEN
12:25 am
+1
Denver Intl airport
Frontier
27 Dec
10:00 pm
DEN
Denver Intl airport
2h 26m
ONT
11:26 pm
Ontario airport
149 USD
Frontier
Frontier
11 Mar
9:00 pm
ONT
Ontario airport
2h 21m
DEN
12:21 am
+1
Denver Intl airport
Frontier
18 Mar
10:00 pm
DEN
Denver Intl airport
2h 28m
ONT
11:28 pm
Ontario airport
151 USD
Alaska Airlines
Alaska Airlines
07 Jan
9:00 pm
ONT
Ontario airport
2h 20m
PDX
11:20 pm
Portland airport
Alaska Airlines
09 Jan
9:00 pm
PDX
Portland airport
2h 16m
ONT
11:16 pm
Ontario airport
147 USD
United Airlines
United Airlines
02 Feb
9:00 pm
ONT
Ontario airport
2h 15m
DEN
12:15 am
+1
Denver Intl airport
United Airlines
09 Feb
10:00 pm
DEN
Denver Intl airport
2h 25m
ONT
11:25 pm
Ontario airport
159 USD
United Airlines
United Airlines
24 Jan
9:00 pm
ONT
Ontario airport
2h 15m
DEN
12:15 am
+1
Denver Intl airport
United Airlines
30 Jan
10:00 pm
DEN
Denver Intl airport
2h 26m
ONT
11:26 pm
Ontario airport
97 USD
Frontier
Frontier
11 Mar
9:00 pm
ONT
Ontario airport
2h 21m
DEN
12:21 am
+1
Denver Intl airport
Frontier
18 Mar
10:00 pm
DEN
Denver Intl airport
2h 28m
ONT
11:28 pm
Ontario airport
151 USD
Frontier
Frontier
19 Dec
9:00 pm
ONT
Ontario airport
2h 25m
DEN
12:25 am
+1
Denver Intl airport
Frontier
27 Dec
10:00 pm
DEN
Denver Intl airport
2h 26m
ONT
11:26 pm
Ontario airport
149 USD
Major Airline
Major Airline
19 Dec
9:00 pm
ONT
Ontario airport
2h 25m
DEN
12:25 am
+1
Denver Intl airport
Major Airline
27 Dec
10:00 pm
DEN
Denver Intl airport
2h 26m
ONT
11:26 pm
Ontario airport
168 USD

Alternative routes for Ontario to United States

Compare alternative flights to and from nearby airports and cities to discover the best prices and most convenient flight times
Los Angeles to Las Vegas
Fastest flight time
1h 09m
Cheapest price
43 USD
San Diego to Las Vegas
Fastest flight time
1h 14m
Cheapest price
55 USD
San Diego to Phoenix
Fastest flight time
1h 24m
Cheapest price
63 USD
Los Angeles to San Francisco
Fastest flight time
1h 09m
Cheapest price
65 USD
San Diego to Houston
Fastest flight time
3h 01m
Cheapest price
75 USD
Palm Springs to San Francisco
Fastest flight time
1h 30m
Cheapest price
77 USD
Los Angeles to Denver
Fastest flight time
2h 14m
Cheapest price
87 USD
San Diego to Seattle
Fastest flight time
2h 55m
Cheapest price
95 USD
Los Angeles to Orlando
Fastest flight time
4h 30m
Cheapest price
95 USD
San Diego to Denver
Fastest flight time
2h 13m
Cheapest price
96 USD
San Diego to San Francisco
Fastest flight time
1h 25m
Cheapest price
97 USD
San Diego to Los Angeles
Fastest flight time
0h 57m
Cheapest price
99 USD
Los Angeles to San Diego
Fastest flight time
0h 51m
Cheapest price
99 USD
Los Angeles to Chicago
Fastest flight time
3h 47m
Cheapest price
103 USD
Los Angeles to Phoenix
Fastest flight time
1h 19m
Cheapest price
105 USD
San Diego to Chicago
Fastest flight time
4h 00m
Cheapest price
117 USD
Los Angeles to Seattle
Fastest flight time
2h 40m
Cheapest price
117 USD
Palm Springs to Seattle
Fastest flight time
2h 45m
Cheapest price
117 USD
San Diego to Tampa
Fastest flight time
7h 12m
Cheapest price
121 USD
Los Angeles to Houston
Fastest flight time
1h 19m
Cheapest price
123 USD
View more
Flights North America United States Ontario to United States