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Cheap Flights To Ontario, CA

  • TipSeptember is the cheapest month to fly to Ontario, California

Best Deals to Ontario, California Last modified: May 24, 2018 4:50 -04:00Prices shown were found by travelers like you over the past 30 days

We've scanned 59,673,135,968 round trip itineraries and found the cheapest flights to Ontario, California. Alaska & United frequently offer the best deals to Ontario, California flights, or select your preferred carrier below to see the cheapest days to fly.

Alaska
OAKONT
Fri 6/22
nonstop
ONTOAK
Mon 6/25
nonstop
Alaska
SFOONT
Wed 6/20
nonstop
ONTSFO
Sun 6/24
nonstop
$114
United
LASONT
Mon 6/11
nonstop
ONTLAS
Mon 6/18
nonstop
$120
American
SLCONT
Sun 6/17
nonstop
ONTSLC
Sat 6/23
nonstop
$260
Frontier
HOUONT
Thu 5/31
1 stop
ONTHOU
Sat 6/2
1 stop
$260

Cheap Flights from Ontario, California (ONT)

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On FareCompare, you’ll find cheap flights for domestic and international travel. Since airlines change flight prices constantly, sign up for Fare Alerts and let FareCompare’s travel search engine monitor airline ticket prices of all major airlines, so you’ll be first in line to get the cheapest tickets.
Cheap Flights to Ontario, California from $95 round trip (ONT) - FareCompare