$380 Cheap United flights Ontario (ONT) to Philadelphia (PHL)

View $380 flight on Fri, Apr 3, 2026Opens in a new window

$380 Cheap United flights Ontario (ONT) to Philadelphia (PHL)

Prices were available within the past 7 days and start at $380 for one-way flights and $570 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Fri, Apr 3 - Sun, Apr 5
ONT
Ontario
PHL
Philadelphia
$570 Roundtrip, found 12 hours ago
$570
Roundtrip
found 12 hours ago
Select United flight, departing Fri, Apr 3 from Ontario to Philadelphia, returning Sun, Apr 5, priced at $570 found 12 hours ago

Find the cheapest month to fly from Ontario (ONT) to Philadelphia (PHL)

March is typically the cheapest month to fly

From $140 - $486 per traveler.
Flights from Ontario (ONT) to Philadelphia (PHL)
Origin airport
Los Angeles - Ontario Intl.
Destination airport
Philadelphia Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, Southwest Airlines, United
Popular airline
American Airlines
Distance
3759 km