Compare United Flights from Ontario (ONT) starting at $134

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Find flight deals from Ontario (ONT)

Ontario (ONT) to Denver (DEN)

Depart Wed 14 Nov 2018,
Return Thu 29 Nov 2018
from$ 177*Viewed: 11 minutes ago

Ontario (ONT) to San Francisco (SFO)

Depart Mon 14 Jan 2019,
Return Tue 29 Jan 2019
from$ 231*Viewed: 11 minutes ago

Ontario (ONT) to Chicago (ORD)

Depart Tue 8 Jan 2019,
Return Wed 23 Jan 2019
from$ 274*Viewed: 11 minutes ago

Ontario (ONT) to Seattle (SEA)

Depart Tue 13 Nov 2018,
Return Wed 28 Nov 2018
from$ 154*Viewed: 11 minutes ago

Ontario (ONT) to New York/Newark (EWR)

Depart Tue 8 Jan 2019,
Return Wed 23 Jan 2019
from$ 294*Viewed: 11 minutes ago

Ontario (ONT) to Houston (IAH)

Depart Mon 14 Jan 2019,
Return Tue 29 Jan 2019
from$ 280*Viewed: 11 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.

Last minute best airfares from Ontario

Ontario (ONT) to Denver (DEN)

Depart Tue 23 Oct 2018,
Return Wed 7 Nov 2018
from$ 235*Viewed: 11 minutes ago

Ontario (ONT) to San Francisco (SFO)

Depart Wed 24 Oct 2018,
Return Thu 8 Nov 2018
from$ 262*Viewed: 11 minutes ago

Ontario (ONT) to Chicago (ORD)

Depart Wed 24 Oct 2018,
Return Thu 8 Nov 2018
from$ 506*Viewed: 11 minutes ago

Ontario (ONT) to Seattle (SEA)

Depart Wed 24 Oct 2018,
Return Thu 8 Nov 2018
from$ 266*Viewed: 11 minutes ago

Ontario (ONT) to New York/Newark (EWR)

Depart Wed 24 Oct 2018,
Return Thu 8 Nov 2018
from$ 608*Viewed: 11 minutes ago

Ontario (ONT) to Houston (IAH)

Depart Wed 24 Oct 2018,
Return Thu 8 Nov 2018
from$ 537*Viewed: 11 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 fares from Ontario

from
to
Type
Dates
Price*
Ontario (ONT)
to Sacramento (SMF)
Roundtrip
Depart Wed 9 Jan 2019
Return Thu 24 Jan 2019
from$ 134*Viewed: 10 minutes ago
Ontario (ONT)
to Seattle (SEA)
Roundtrip
Depart Tue 13 Nov 2018
Return Wed 28 Nov 2018
from$ 154*Viewed: 11 minutes ago
Ontario (ONT)
to Portland, OR (PDX)
Roundtrip
Depart Tue 8 Jan 2019
Return Wed 23 Jan 2019
from$ 154*Viewed: 11 minutes ago
Ontario (ONT)
to Denver (DEN)
Roundtrip
Depart Wed 14 Nov 2018
Return Thu 29 Nov 2018
from$ 177*Viewed: 11 minutes ago
Ontario (ONT)
to Boise (BOI)
Roundtrip
Depart Tue 8 Jan 2019
Return Wed 23 Jan 2019
from$ 202*Viewed: 11 minutes ago
Ontario (ONT)
to Reno (RNO)
Roundtrip
Depart Mon 14 Jan 2019
Return Tue 29 Jan 2019
from$ 204*Viewed: 11 minutes ago
Ontario (ONT)
to Eugene (EUG)
Roundtrip
Depart Mon 14 Jan 2019
Return Tue 29 Jan 2019
from$ 212*Viewed: 11 minutes ago
Ontario (ONT)
to Salt Lake City (SLC)
Roundtrip
Depart Tue 8 Jan 2019
Return Wed 23 Jan 2019
from$ 214*Viewed: 10 minutes ago
Ontario (ONT)
to Redmond (RDM)
Roundtrip
Depart Tue 8 Jan 2019
Return Wed 23 Jan 2019
from$ 218*Viewed: 11 minutes ago
Ontario (ONT)
to Medford (MFR)
Roundtrip
Depart Tue 8 Jan 2019
Return Wed 23 Jan 2019
from$ 218*Viewed: 11 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.

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.