$180 Cheap Frontier Airlines flights Washington (IAD) to Ontario Intl. Airport (ONT)

$180 Cheap Frontier Airlines flights Washington (IAD) to Ontario Intl. Airport (ONT)

Prices were available within the past 7 days and start at $180 for one-way flights and $380 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Aug 18 - Fri, Aug 21

IAD

Washington

ONT

Ontario

$380 Roundtrip, found 2 days ago

$380

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Tue, Aug 18 from Washington to Ontario, returning Fri, Aug 21, priced at $380 found 2 days ago

Sun, Aug 16 - Sun, Sep 6

IAD

Washington

ONT

Ontario

$400 Roundtrip, found 2 days ago

$400

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Sun, Aug 16 from Washington to Ontario, returning Sun, Sep 6, priced at $400 found 2 days ago

Tue, Jun 30 - Mon, Jul 20

IAD

Washington

ONT

Ontario

$421 Roundtrip, found 2 days ago

$421

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Tue, Jun 30 from Washington to Ontario, returning Mon, Jul 20, priced at $421 found 2 days ago

Tue, Jun 30 - Mon, Jul 20

IAD

Washington

ONT

Ontario

$426 Roundtrip, found 2 days ago

$426

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Tue, Jun 30 from Washington to Ontario, returning Mon, Jul 20, priced at $426 found 2 days ago

Tue, Jun 30 - Tue, Jul 14

IAD

Washington

ONT

Ontario

$430 Roundtrip, found 1 day ago

$430

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Tue, Jun 30 from Washington to Ontario, returning Tue, Jul 14, priced at $430 found 1 day ago

Tue, Jun 30 - Mon, Jul 20

IAD

Washington

ONT

Ontario

$450 Roundtrip, found 2 days ago

$450

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Tue, Jun 30 from Washington to Ontario, returning Mon, Jul 20, priced at $450 found 2 days ago