$98 Cheap Frontier Airlines flights Washington (IAD) to Ontario (ONT)

$98 Cheap Frontier Airlines flights Washington (IAD) to Ontario (ONT)

Prices were available within the past 7 days and start at $98 for one-way flights and $389 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sun, Oct 5 - Sun, Oct 12

IAD

Washington

ONT

Ontario

$389 Roundtrip, found 22 hours ago

$389

Roundtrip

found 22 hours ago

Select Frontier Airlines flight, departing Sun, Oct 5 from Washington to Ontario, returning Sun, Oct 12, priced at $389 found 22 hours ago