
- Plan, book, fly with confidence
trending down icon Be in the knowGet alerts if flight prices drop or rise*bex rewards loyalty icon Book smarterSave up to 30% on select hotels after you book a flight*one key icon
$39 Cheap United flights San Francisco (SFO) to Ontario (ONT)
Prices were available within the past 7 days and start at $39 for one-way flights and $97 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Sep 8 - Tue, Sep 9
SFO
San Francisco
ONT
Ontario
$97 Roundtrip, just found
$97
Roundtrip
just found

Fri, Aug 8 - Tue, Aug 19
SFO
San Francisco
ONT
Ontario
$106 Roundtrip, found 2 days ago
$106
Roundtrip
found 2 days ago

Sat, Oct 4 - Wed, Oct 8
SFO
San Francisco
ONT
Ontario
$114 Roundtrip, found 1 hour ago
$114
Roundtrip
found 1 hour ago

Sat, Dec 6 - Wed, Dec 10
SFO
San Francisco
ONT
Ontario
$116 Roundtrip, found 2 days ago
$116
Roundtrip
found 2 days ago

Sat, Sep 6 - Tue, Sep 16
SFO
San Francisco
ONT
Ontario
$117 Roundtrip, found 11 hours ago
$117
Roundtrip
found 11 hours ago

Tue, Aug 5 - Wed, Aug 6
SFO
San Francisco
ONT
Ontario
$117 Roundtrip, found 7 hours ago
$117
Roundtrip
found 7 hours ago
Origin airport | San Francisco Intl. |
Destination airport | Los Angeles - Ontario Intl. |
Airlines serving | Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, United |
Popular airline | United |
Distance | 363 mi |
Average flight time | 1 hour 27 mins |
Frequently asked questions
- Trending United Flights
- Trending Routes
- Airlines Operating
- Nearby Airports
- Flights from Other Cities
- Expedia's Latest Trends
Most Popular United Routes from San Francisco
Most Popular United Routes from Ontario
- Newark Liberty Intl. Airport to Cancun (EWR - CUN)
- Los Angeles to Cancun (LAX - CUN)
- Los Angeles to Honolulu (LAX - HNL)
- San Juan to Orlando (SJU - MCO)
- Newark Liberty Intl. Airport to Cancun (EWR - CUN)
- New York to San Juan (LGA - SJU)
- Newark Liberty Intl. Airport to San Juan (EWR - SJU)
- Dallas to San José del Cabo (DFW - SJD)
- Newark Liberty Intl. Airport to Santo Domingo (EWR - SDQ)
- Newark Liberty Intl. Airport to San Juan (EWR - SJU)
Popular Domestic Routes in Los Angeles - Ontario Intl.
- Newark Liberty Intl. Airport to Punta Cana (EWR - PUJ)
- Newark Liberty Intl. Airport to Orlando (EWR - MCO)
- Newark Liberty Intl. Airport to Fort Lauderdale (EWR - FLL)
- Los Angeles to Honolulu (LAX - HNL)
- Newark Liberty Intl. Airport to Miami (EWR - MIA)
- Newark Liberty Intl. Airport to San Juan (EWR - SJU)
- Philadelphia to Orlando (PHL - MCO)
- Los Angeles to Tokyo (LAX - NRT)
- Newark Liberty Intl. Airport to Miami (EWR - MIA)
- Los Angeles to Tokyo (LAX - HND)
Nearby Airports
- San Carlos Airport (SQL)
- Oakland Intl. Airport (OAK)
- Norman Y. Mineta San Jose Intl. Airport (SJC)
- Buchanan Field Airport (CCR)
- Watsonville Municipal Airport (WVI)
- Stockton Municipal Airport (SCK)
- Sonoma County Airport (STS)
- Monterey Peninsula Airport (MRY)
- Salinas Municipal Airport (SNS)
- Modesto City - County Airport (MOD)
Expedia's Latest Trends
Flights
- Flights from Los Angeles to Tokyo
- Flights from Los Angeles to Seattle
- Flights from Dallas to Los Angeles
- Flights from San Francisco to Los Angeles
- Flights from Los Angeles to Chicago
- Flights from Los Angeles to Seoul
- Flights from Houston to Los Angeles
- Flights from San Francisco to Tokyo
- Flights from Los Angeles to Cancun
- Flights from San Francisco to New York
- Flights from Los Angeles to San Francisco
- Flights from Los Angeles to Honolulu
- Flights from Los Angeles to Paris
- Flights from San Francisco to Las Vegas
- Flights from Boston to Los Angeles
- Flights from San Francisco to Honolulu
- Flights from Los Angeles to Rome
- Flights from Las Vegas to Los Angeles
- Flights from Atlanta to Los Angeles
- Flights from Los Angeles to Bangkok
- Flights from Los Angeles to Las Vegas
- Flights from Los Angeles to Manila
- Flights from Chicago to Los Angeles
- Flights from Los Angeles to New York
- Flights from Los Angeles to London
- Flights from New York to San Francisco
- Flights from Los Angeles to Miami
- Flights from Los Angeles to Dallas
- Flights from New York to Los Angeles
- Flights from Seattle to Los Angeles
*Available to One Key members.