Compare United Flights from Ontario (ONT) starting at $501

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Find flight deals from Ontario (ONT)

Ontario (ONT) to Denver (DEN)

Depart Fri 7 Sep 2018,
Return Sat 22 Sep 2018
from$ 524*Viewed: 3 hours ago

Ontario (ONT) to San Francisco (SFO)

Depart Sat 15 Sep 2018,
Return Sun 30 Sep 2018
from$ 501*Viewed: 3 hours ago

Ontario (ONT) to Portland, OR (PDX)

Depart Tue 4 Sep 2018,
Return Wed 19 Sep 2018
from$ 576*Viewed: 3 hours ago

Ontario (ONT) to Seattle (SEA)

Depart Wed 12 Sep 2018,
Return Thu 27 Sep 2018
from$ 646*Viewed: 3 hours ago

Ontario (ONT) to Chicago (ORD)

Depart Fri 14 Sep 2018,
Return Sat 29 Sep 2018
from$ 864*Viewed: 3 hours ago

Ontario (ONT) to Atlanta (ATL)

Depart Tue 11 Sep 2018,
Return Wed 26 Sep 2018
from$ 992*Viewed: 3 hours 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.

Last minute best airfares from Ontario

Ontario (ONT) to Denver (DEN)

Depart Wed 27 Jun 2018,
Return Thu 12 Jul 2018
from$ 634*Viewed: 3 hours ago

Ontario (ONT) to San Francisco (SFO)

Depart Wed 27 Jun 2018,
Return Thu 12 Jul 2018
from$ 507*Viewed: 3 hours ago

Ontario (ONT) to Portland, OR (PDX)

Depart Wed 27 Jun 2018,
Return Thu 12 Jul 2018
from$ 661*Viewed: 3 hours ago

Ontario (ONT) to Seattle (SEA)

Depart Wed 27 Jun 2018,
Return Thu 12 Jul 2018
from$ 715*Viewed: 3 hours ago

Ontario (ONT) to Chicago (ORD)

Depart Tue 26 Jun 2018,
Return Wed 11 Jul 2018
from$ 1,023*Viewed: 3 hours ago

Ontario (ONT) to Atlanta (ATL)

Depart Tue 26 Jun 2018,
Return Wed 11 Jul 2018
from$ 1,200*Viewed: 3 hours 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 fares from Ontario

from
to
Type
Dates
Price*
Ontario (ONT)
to San Francisco (SFO)
Roundtrip
Depart Sat 15 Sep 2018
Return Sun 30 Sep 2018
from$ 501*Viewed: 3 hours ago
Ontario (ONT)
to Sacramento (SMF)
Roundtrip
Depart Sun 26 Aug 2018
Return Mon 10 Sep 2018
from$ 512*Viewed: 3 hours ago
Ontario (ONT)
to Denver (DEN)
Roundtrip
Depart Fri 7 Sep 2018
Return Sat 22 Sep 2018
from$ 524*Viewed: 3 hours ago
Ontario (ONT)
to Cabo San Lucas (SJD)
Roundtrip
Depart Sat 25 Aug 2018
Return Sun 9 Sep 2018
from$ 565*Viewed: 3 hours ago
Ontario (ONT)
to Portland, OR (PDX)
Roundtrip
Depart Tue 4 Sep 2018
Return Wed 19 Sep 2018
from$ 576*Viewed: 3 hours ago
Ontario (ONT)
to Colorado Springs (COS)
Roundtrip
Depart Tue 28 Aug 2018
Return Wed 12 Sep 2018
from$ 616*Viewed: 3 hours ago
Ontario (ONT)
to Eugene (EUG)
Roundtrip
Depart Mon 20 Aug 2018
Return Tue 4 Sep 2018
from$ 624*Viewed: 3 hours ago
Ontario (ONT)
to Medford (MFR)
Roundtrip
Depart Fri 7 Sep 2018
Return Sat 22 Sep 2018
from$ 628*Viewed: 3 hours ago
Ontario (ONT)
to Redmond (RDM)
Roundtrip
Depart Fri 14 Sep 2018
Return Sat 29 Sep 2018
from$ 630*Viewed: 3 hours ago
Ontario (ONT)
to Boise (BOI)
Roundtrip
Depart Fri 14 Sep 2018
Return Sat 29 Sep 2018
from$ 637*Viewed: 3 hours 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.

Ontario Airport information

Ontario is served by Ontario International Airport (ONT), located just two miles east of downtown. Access the airport’s free Wi-Fi before boarding your flight from Ontario.

Reaching the Ontario Airport

Local public buses connect from downtown Ontario. If your accommodations are located outside the city center, numerous Southern California operators offer bus service to the airport. For direct service, hire a taxi or pre-book an airport shuttle. The airport offers onsite car rentals and parking.