$91 Cheap Frontier Airlines flights San Antonio (SAT) to Ontario (ONT)

$91 Cheap Frontier Airlines flights San Antonio (SAT) to Ontario (ONT)

Prices were available within the past 7 days and start at $91 for one-way flights and $170 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, May 6 - Tue, May 19

SAT

San Antonio

ONT

Ontario

$170 Roundtrip, found 18 hours ago

$170

Roundtrip

found 18 hours ago

Select Frontier Airlines flight, departing Wed, May 6 from San Antonio to Ontario, returning Tue, May 19, priced at $170 found 18 hours ago

Wed, May 13 - Tue, May 19

SAT

San Antonio

ONT

Ontario

$190 Roundtrip, found 18 hours ago

$190

Roundtrip

found 18 hours ago

Select Frontier Airlines flight, departing Wed, May 13 from San Antonio to Ontario, returning Tue, May 19, priced at $190 found 18 hours ago

Wed, May 6 - Thu, May 21

SAT

San Antonio

ONT

Ontario

$195 Roundtrip, found 18 hours ago

$195

Roundtrip

found 18 hours ago

Select Frontier Airlines flight, departing Wed, May 6 from San Antonio to Ontario, returning Thu, May 21, priced at $195 found 18 hours ago

Wed, Jun 3 - Tue, Jun 9

SAT

San Antonio

ONT

Ontario

$210 Roundtrip, found 8 hours ago

$210

Roundtrip

found 8 hours ago

Select Frontier Airlines flight, departing Wed, Jun 3 from San Antonio to Ontario, returning Tue, Jun 9, priced at $210 found 8 hours ago

Fri, May 15 - Tue, May 19

SAT

San Antonio

ONT

Ontario

$211 Roundtrip, found 18 hours ago

$211

Roundtrip

found 18 hours ago

Select Frontier Airlines flight, departing Fri, May 15 from San Antonio to Ontario, returning Tue, May 19, priced at $211 found 18 hours ago

Wed, Jun 3 - Wed, Jun 10

SAT

San Antonio

ONT

Ontario

$215 Roundtrip, found 8 hours ago

$215

Roundtrip

found 8 hours ago

Select Frontier Airlines flight, departing Wed, Jun 3 from San Antonio to Ontario, returning Wed, Jun 10, priced at $215 found 8 hours ago

Fri, Jun 5 - Tue, Jun 9

SAT

San Antonio

ONT

Ontario

$231 Roundtrip, found 8 hours ago

$231

Roundtrip

found 8 hours ago

Select Frontier Airlines flight, departing Fri, Jun 5 from San Antonio to Ontario, returning Tue, Jun 9, priced at $231 found 8 hours ago

Wed, Jun 3 - Sat, Jun 13

SAT

San Antonio

ONT

Ontario

$235 Roundtrip, found 8 hours ago

$235

Roundtrip

found 8 hours ago

Select Frontier Airlines flight, departing Wed, Jun 3 from San Antonio to Ontario, returning Sat, Jun 13, priced at $235 found 8 hours ago

Sat, Jun 6 - Wed, Jun 10

SAT

San Antonio

ONT

Ontario

$236 Roundtrip, found 8 hours ago

$236

Roundtrip

found 8 hours ago

Select Frontier Airlines flight, departing Sat, Jun 6 from San Antonio to Ontario, returning Wed, Jun 10, priced at $236 found 8 hours ago

Wed, Jun 10 - Wed, Jun 24

SAT

San Antonio

ONT

Ontario

$240 Roundtrip, found 18 hours ago

$240

Roundtrip

found 18 hours ago

Select Frontier Airlines flight, departing Wed, Jun 10 from San Antonio to Ontario, returning Wed, Jun 24, priced at $240 found 18 hours ago

Thu, May 14 - Wed, May 20

SAT

San Antonio

ONT

Ontario

$255 Roundtrip, found 18 hours ago

$255

Roundtrip

found 18 hours ago

Select Frontier Airlines flight, departing Thu, May 14 from San Antonio to Ontario, returning Wed, May 20, priced at $255 found 18 hours ago