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Cheap Flights To Ontario, CA Last modified: Jan 18, 2017 0:29 -05:00

  • TipFebruary is the cheapest month to fly to Ontario
  • Tip$105 is the average round-trip fare price from SFO to ONT

Best Deals to Ontario Last modified: Jan 18, 2017 0:29 -05:00Prices shown were found by travelers like you over the past 30 days

We've scanned 31,032,328,308 round trip itineraries and found the cheapest flights to Ontario. Alaska & United frequently offer the best deals to Ontario flights, or select your preferred carrier below to see the cheapest days to fly.

Alaska
SEAONT
Mon 2/13
nonstop
ONTSEA
Mon 2/13
nonstop
$123
United
DENONT
Mon 2/6
nonstop
ONTDEN
Thu 2/9
nonstop
$129
American
SMFONT
Tue 1/31
nonstop
ONTSMF
Wed 2/1
nonstop
$137
United
SJCONT
Tue 2/7
nonstop
ONTSJC
Sat 2/11
nonstop
$162
United
CHIONT
Tue 2/7
1 stop
ONTCHI
Thu 2/9
1 stop
$206

Cheap Flights from Ontario (ONT)

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Cheap Flights to Ontario - Round trip airfares for Ontario flights (ONT)