Book United Flights to Ontario (ONT) from $134

Select journey type

Enter to select travel class and passengers

Find flights to Ontario (ONT)

Denver (DEN) to Ontario (ONT)

Depart Tue 30 Oct 2018,
Return Wed 14 Nov 2018
from$ 157*Viewed: 2 hours ago

San Francisco (SFO) to Ontario (ONT)

Depart Wed 16 Jan 2019,
Return Thu 31 Jan 2019
from$ 231*Viewed: 1 hour ago

Chicago (ORD) to Ontario (ONT)

Depart Wed 16 Jan 2019,
Return Thu 31 Jan 2019
from$ 230*Viewed: 1 hour ago

Raleigh (RDU) to Ontario (ONT)

Depart Wed 16 Jan 2019,
Return Thu 31 Jan 2019
from$ 290*Viewed: 1 hour ago

Madison (MSN) to Ontario (ONT)

Depart Tue 15 Jan 2019,
Return Wed 30 Jan 2019
from$ 368*Viewed: 1 hour ago

Wichita (ICT) to Ontario (ONT)

Depart Tue 8 Jan 2019,
Return Wed 23 Jan 2019
from$ 318*Viewed: 30 minutes ago
*Prices have been available for round trips within the last 48 hours and may not be currently available. Fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply.

Book early and get the lowest airfares to Ontario

from
to
Type
Dates
Price*
Sacramento (SMF)
to Ontario (ONT)
Roundtrip
Depart Wed 16 Jan 2019
Return Thu 31 Jan 2019
from$ 134*Viewed: 55 minutes ago
Denver (DEN)
to Ontario (ONT)
Roundtrip
Depart Tue 30 Oct 2018
Return Wed 14 Nov 2018
from$ 157*Viewed: 2 hours ago
Austin (AUS)
to Ontario (ONT)
Roundtrip
Depart Fri 30 Nov 2018
Return Sat 15 Dec 2018
from$ 174*Viewed: 2 hours ago
Seattle (SEA)
to Ontario (ONT)
Roundtrip
Depart Tue 8 Jan 2019
Return Wed 23 Jan 2019
from$ 174*Viewed: 1 hour ago
Portland, OR (PDX)
to Ontario (ONT)
Roundtrip
Depart Tue 15 Jan 2019
Return Wed 30 Jan 2019
from$ 174*Viewed: 1 hour ago
Boise (BOI)
to Ontario (ONT)
Roundtrip
Depart Tue 15 Jan 2019
Return Wed 30 Jan 2019
from$ 190*Viewed: 2 hours ago
Reno (RNO)
to Ontario (ONT)
Roundtrip
Depart Tue 15 Jan 2019
Return Wed 30 Jan 2019
from$ 204*Viewed: 1 hour ago
Eugene (EUG)
to Ontario (ONT)
Roundtrip
Depart Wed 16 Jan 2019
Return Thu 31 Jan 2019
from$ 212*Viewed: 2 hours ago
Dallas (DFW)
to Ontario (ONT)
Roundtrip
Depart Mon 14 Jan 2019
Return Tue 29 Jan 2019
from$ 228*Viewed: 2 hours ago
Chicago (ORD)
to Ontario (ONT)
Roundtrip
Depart Wed 16 Jan 2019
Return Thu 31 Jan 2019
from$ 230*Viewed: 1 hour ago
*Prices have been available for round trips within the last 48 hours and may not be currently available. Fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply.

Things to do in Ontario

Fly to Ontario with United Airlines from over 200 airports within the United States and an additional 100 airports internationally.

Ontario’s top attractions

  • Visit the Ontario Museum of History and Art for an overview of the region.
  • Tour the grand Graber Olive House, home to the oldest operating olive packer in the U.S.
  • Shop till you drop at Ontario Mills.
  • Take the family to Scandia Ontario, an amusement park with rides, mini golf, go karts and games.
  • Head to iFLY Ontario for an indoor skydiving experience.
  • Relax on the beaches in nearby Los Angeles County.

Best time to travel to Ontario

Visit Ontario during the summer and fall for sunny and dry weather. The Los Angeles County Fair is held for four weeks each fall, beginning on Labor Day. Taste diverse food and drinks from near and far, see farm animals, learn more about agriculture and enjoy live entertainment. The Lights on Miracle Hill in nearby Walnut is the perfect winter warm up for the holidays.

Weather in Ontario

80 °FThursday10/18/2018
74 °FFriday10/19/2018
73 °FSaturday10/20/2018
77 °FSunday10/21/2018
74 °FMonday10/22/2018
73 °FTuesday10/23/2018
74 °FWednesday10/24/2018
Powered by: OpenWeatherMap.org