Cheap Flights To Ontario, CA

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

Best Deals to Ontario, California Last modified: Nov 16, 2018 2:41 -05:00Prices shown were found by travelers like you over the past 30 days

We've scanned 48,195,047,545 round trip itineraries and found the cheapest flights to Ontario, California. Alaska & American frequently offer the best deals to Ontario, California flights, or select your preferred carrier below to see the cheapest days to fly.

Alaska
SFOONT
Wed 12/26
nonstop
ONTSFO
Mon 12/31
nonstop
$165
American
LASONT
Sun 12/9
nonstop
ONTLAS
Wed 12/12
nonstop
$196
American
SLCONT
Sat 1/12
1 stop
ONTSLC
Wed 1/16
1 stop
$212
Frontier
GDLONT
Mon 12/24
nonstop
ONTGDL
Wed 1/9
nonstop
$259
United
SJCONT
Wed 12/5
1 stop
ONTSJC
Fri 12/7
1 stop
$347

Cheap Flights from Ontario, California (ONT)

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Cheap Flights to Ontario, California from $103 round trip (ONT) - FareCompare