$104 Cheap Frontier Airlines flights Ontario (ONT) to Washington (IAD)

$104 Cheap Frontier Airlines flights Ontario (ONT) to Washington (IAD)

Prices were available within the past 7 days and start at $104 for one-way flights and $404 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Oct 2 - Sun, Oct 5

ONT

Ontario

IAD

Washington

$404 Roundtrip, found 1 day ago

$404

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Thu, Oct 2 from Ontario to Washington, returning Sun, Oct 5, priced at $404 found 1 day ago