$130 Cheap Frontier Airlines flights Washington (IAD) to Ontario (ONT)

$130 Cheap Frontier Airlines flights Washington (IAD) to Ontario (ONT)

Prices were available within the past 7 days and start at $130 for one-way flights and $220 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Jun 2 - Tue, Jun 23

IAD

Washington

ONT

Ontario

$220 Roundtrip, found 22 hours ago

$220

Roundtrip

found 22 hours ago

Select Frontier Airlines flight, departing Tue, Jun 2 from Washington to Ontario, returning Tue, Jun 23, priced at $220 found 22 hours ago

Mon, Jun 1 - Tue, Jun 23

IAD

Washington

ONT

Ontario

$225 Roundtrip, found 22 hours ago

$225

Roundtrip

found 22 hours ago

Select Frontier Airlines flight, departing Mon, Jun 1 from Washington to Ontario, returning Tue, Jun 23, priced at $225 found 22 hours ago

Sat, May 30 - Tue, Jun 23

IAD

Washington

ONT

Ontario

$240 Roundtrip, found 22 hours ago

$240

Roundtrip

found 22 hours ago

Select Frontier Airlines flight, departing Sat, May 30 from Washington to Ontario, returning Tue, Jun 23, priced at $240 found 22 hours ago

Mon, Jun 1 - Fri, Jun 19

IAD

Washington

ONT

Ontario

$245 Roundtrip, found 22 hours ago

$245

Roundtrip

found 22 hours ago

Select Frontier Airlines flight, departing Mon, Jun 1 from Washington to Ontario, returning Fri, Jun 19, priced at $245 found 22 hours ago

Tue, Jun 2 - Sat, Jun 20

IAD

Washington

ONT

Ontario

$260 Roundtrip, found 22 hours ago

$260

Roundtrip

found 22 hours ago

Select Frontier Airlines flight, departing Tue, Jun 2 from Washington to Ontario, returning Sat, Jun 20, priced at $260 found 22 hours ago

Mon, Jun 1 - Sat, Jun 20

IAD

Washington

ONT

Ontario

$265 Roundtrip, found 22 hours ago

$265

Roundtrip

found 22 hours ago

Select Frontier Airlines flight, departing Mon, Jun 1 from Washington to Ontario, returning Sat, Jun 20, priced at $265 found 22 hours ago

Tue, Jun 23 - Sat, Jun 27

IAD

Washington

ONT

Ontario

$280 Roundtrip, found 2 hours ago

$280

Roundtrip

found 2 hours ago

Select Frontier Airlines flight, departing Tue, Jun 23 from Washington to Ontario, returning Sat, Jun 27, priced at $280 found 2 hours ago