Cheap Frontier Airlines flights Washington (DCA) to Ontario (ONT)

Cheap Frontier Airlines flights Washington (DCA) to Ontario (ONT)

Prices were available within the past 7 days and start at for one-way flights and $140 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Jan 12 - Sat, Jan 24

DCA

Washington

ONT

Ontario

$140 Roundtrip, found 6 days ago

$140

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Mon, Jan 12 from Washington to Ontario, returning Sat, Jan 24, priced at $140 found 6 days ago

Fri, Jan 9 - Wed, Jan 28

DCA

Washington

ONT

Ontario

$144 Roundtrip, found 6 days ago

$144

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Fri, Jan 9 from Washington to Ontario, returning Wed, Jan 28, priced at $144 found 6 days ago

Fri, Jan 9 - Fri, Jan 23

DCA

Washington

ONT

Ontario

$148 Roundtrip, found 6 days ago

$148

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Fri, Jan 9 from Washington to Ontario, returning Fri, Jan 23, priced at $148 found 6 days ago

Sat, Jan 10 - Fri, Jan 23

DCA

Washington

ONT

Ontario

$152 Roundtrip, found 6 days ago

$152

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Sat, Jan 10 from Washington to Ontario, returning Fri, Jan 23, priced at $152 found 6 days ago

Thu, Jan 8 - Tue, Jan 27

DCA

Washington

ONT

Ontario

$156 Roundtrip, found 6 days ago

$156

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Thu, Jan 8 from Washington to Ontario, returning Tue, Jan 27, priced at $156 found 6 days ago

Tue, Feb 3 - Tue, Feb 17

DCA

Washington

ONT

Ontario

$186 Roundtrip, found 6 days ago

$186

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Tue, Feb 3 from Washington to Ontario, returning Tue, Feb 17, priced at $186 found 6 days ago

Fri, Jan 30 - Tue, Feb 17

DCA

Washington

ONT

Ontario

$190 Roundtrip, found 6 days ago

$190

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Fri, Jan 30 from Washington to Ontario, returning Tue, Feb 17, priced at $190 found 6 days ago

Wed, Nov 19 - Tue, Dec 2

DCA

Washington

ONT

Ontario

$193 Roundtrip, found 1 day ago

$193

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Wed, Nov 19 from Washington to Ontario, returning Tue, Dec 2, priced at $193 found 1 day ago

Wed, Feb 4 - Tue, Feb 17

DCA

Washington

ONT

Ontario

$194 Roundtrip, found 6 days ago

$194

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Wed, Feb 4 from Washington to Ontario, returning Tue, Feb 17, priced at $194 found 6 days ago

Tue, Jan 20 - Sat, Jan 31

DCA

Washington

ONT

Ontario

$216 Roundtrip, found 6 days ago

$216

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Tue, Jan 20 from Washington to Ontario, returning Sat, Jan 31, priced at $216 found 6 days ago

Fri, Dec 5 - Thu, Dec 18

DCA

Washington

ONT

Ontario

$218 Roundtrip, found 6 days ago

$218

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Fri, Dec 5 from Washington to Ontario, returning Thu, Dec 18, priced at $218 found 6 days ago

Thu, Feb 5 - Fri, Feb 20

DCA

Washington

ONT

Ontario

$220 Roundtrip, found 6 days ago

$220

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Thu, Feb 5 from Washington to Ontario, returning Fri, Feb 20, priced at $220 found 6 days ago