$155 Cheap Frontier Airlines flights Ontario (ONT) to Washington (IAD)

$155 Cheap Frontier Airlines flights Ontario (ONT) to Washington (IAD)

Prices were available within the past 7 days and start at $155 for one-way flights and $204 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Jul 21 - Mon, Jul 28

ONT

Ontario

IAD

Washington

$204 Roundtrip, found 19 hours ago

$204

Roundtrip

found 19 hours ago

Select Frontier Airlines flight, departing Mon, Jul 21 from Ontario to Washington, returning Mon, Jul 28, priced at $204 found 19 hours ago

Sat, Jul 26 - Fri, Aug 1

ONT

Ontario

IAD

Washington

$235 Roundtrip, found 19 hours ago

$235

Roundtrip

found 19 hours ago

Select Frontier Airlines flight, departing Sat, Jul 26 from Ontario to Washington, returning Fri, Aug 1, priced at $235 found 19 hours ago

Sun, Jul 20 - Mon, Jul 28

ONT

Ontario

IAD

Washington

$250 Roundtrip, found 19 hours ago

$250

Roundtrip

found 19 hours ago

Select Frontier Airlines flight, departing Sun, Jul 20 from Ontario to Washington, returning Mon, Jul 28, priced at $250 found 19 hours ago