$172 Cheap Frontier Airlines flights Washington (IAD) to Ontario (ONT)

$172 Cheap Frontier Airlines flights Washington (IAD) to Ontario (ONT)

Prices were available within the past 7 days and start at $172 for one-way flights and $267 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Aug 8 - Mon, Aug 11

IAD

Washington

ONT

Ontario

$267 Roundtrip, found 1 day ago

$267

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Fri, Aug 8 from Washington to Ontario, returning Mon, Aug 11, priced at $267 found 1 day ago

Fri, Aug 8 - Mon, Aug 11

IAD

Washington

ONT

Ontario

$272 Roundtrip, found 1 day ago

$272

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Fri, Aug 8 from Washington to Ontario, returning Mon, Aug 11, priced at $272 found 1 day ago

Fri, Jul 18 - Wed, Jul 23

IAD

Washington

ONT

Ontario

$331 Roundtrip, found 5 days ago

$331

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Fri, Jul 18 from Washington to Ontario, returning Wed, Jul 23, priced at $331 found 5 days ago

Fri, Aug 8 - Mon, Aug 11

IAD

Washington

ONT

Ontario

$339 Roundtrip, found 1 day ago

$339

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Fri, Aug 8 from Washington to Ontario, returning Mon, Aug 11, priced at $339 found 1 day ago

Fri, Jul 18 - Mon, Jul 28

IAD

Washington

ONT

Ontario

$344 Roundtrip, found 5 days ago

$344

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Fri, Jul 18 from Washington to Ontario, returning Mon, Jul 28, priced at $344 found 5 days ago