$166 Cheap Frontier Airlines flights Ontario Intl. Airport (ONT) to Washington (IAD)

$166 Cheap Frontier Airlines flights Ontario Intl. Airport (ONT) to Washington (IAD)

Prices were available within the past 7 days and start at $166 for one-way flights and $240 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Jul 7 - Fri, Jul 10

ONT

Ontario

IAD

Washington

$240 Roundtrip, found 6 days ago

$240

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Tue, Jul 7 from Ontario to Washington, returning Fri, Jul 10, priced at $240 found 6 days ago

Tue, Jul 7 - Sun, Jul 12

ONT

Ontario

IAD

Washington

$260 Roundtrip, found 6 days ago

$260

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Tue, Jul 7 from Ontario to Washington, returning Sun, Jul 12, priced at $260 found 6 days ago

Thu, Jul 9 - Sun, Jul 12

ONT

Ontario

IAD

Washington

$300 Roundtrip, found 6 days ago

$300

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Thu, Jul 9 from Ontario to Washington, returning Sun, Jul 12, priced at $300 found 6 days ago

Tue, Jul 7 - Tue, Jul 14

ONT

Ontario

IAD

Washington

$325 Roundtrip, found 6 days ago

$325

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Tue, Jul 7 from Ontario to Washington, returning Tue, Jul 14, priced at $325 found 6 days ago

Sat, Jul 11 - Tue, Jul 14

ONT

Ontario

IAD

Washington

$345 Roundtrip, found 6 days ago

$345

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Sat, Jul 11 from Ontario to Washington, returning Tue, Jul 14, priced at $345 found 6 days ago

Wed, Jun 24 - Mon, Jun 29

ONT

Ontario

IAD

Washington

$350 Roundtrip, found 3 days ago

$350

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Wed, Jun 24 from Ontario to Washington, returning Mon, Jun 29, priced at $350 found 3 days ago