$130 Cheap United flights Washington (IAD) to Ontario (ONT)

View $130 flight on Sat, Jan 24, 2026Opens in a new window
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$130 Cheap United flights Washington (IAD) to Ontario (ONT)

Prices were available within the past 7 days and start at $130 for one-way flights and $275 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, Dec 10 - Tue, Dec 16
IAD
Washington
ONT
Ontario
$275 Roundtrip, found 1 day ago
$275
Roundtrip
found 1 day ago
Select United flight, departing Wed, Dec 10 from Washington to Ontario, returning Tue, Dec 16, priced at $275 found 1 day ago
United
Mon, Dec 8 - Thu, Dec 11
IAD
Washington
ONT
Ontario
$293 Roundtrip, found 1 hour ago
$293
Roundtrip
found 1 hour ago
Select United flight, departing Mon, Dec 8 from Washington to Ontario, returning Thu, Dec 11, priced at $293 found 1 hour ago

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
Los Angeles - Ontario Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, Southwest Airlines, United
Popular airline
Southwest Airlines
Distance
2236 mi
Average flight time
9 hours 41 mins
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