$287 Cheap Delta flights Ontario (ONT) to San Francisco (SFO)

View $287 flight on Fri, Feb 13, 2026Opens in a new window

$287 Cheap Delta flights Ontario (ONT) to San Francisco (SFO)

Prices were available within the past 7 days and start at $287 for one-way flights and $583 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Fri, Feb 13 - Sun, Feb 15
ONT
Ontario
SFO
San Francisco
$583 Roundtrip, found 21 hours ago
$583
Roundtrip
found 21 hours ago
Select Delta flight, departing Fri, Feb 13 from Ontario to San Francisco, returning Sun, Feb 15, priced at $583 found 21 hours ago

Find the cheapest month to fly from Ontario (ONT) to San Francisco (SFO)

January is typically the cheapest month to fly

From $48 - $159 per traveler.
Flights from Ontario (ONT) to San Francisco (SFO)
Origin airport
Los Angeles - Ontario Intl.
Destination airport
San Francisco Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, United
Popular airline
United
Distance
582 km
Average flight time
1 hour 35 mins