I was checking SFO - YYZ May 9 Air Canada on http://availability.publicbackup.com

I do not see any I class indicator from the result. Can anyone please explain to me how I can check the upgrade availability on these flights?

Thanks.

Air Canada 758
Airbus A319 6:45 am
San Francisco, CA (SFO) 2:39 pm
Toronto, Canada (YYZ) J9 C4 Z1 Y9 M9 U9 B9 H9 V9 Q9 L0 A0 S6 R9 K9 N9 G9 P0 E0 T6 non-stop 2260


Air Canada 5660
Airbus A319 10:45 am
San Francisco, CA (SFO) 6:54 pm
Toronto, Canada (YYZ) J0 C0 Z0 Y9 M9 U9 B9 H9 V9 Q9 L9 A0 S0 R9 K9 N9 G9 P9 E0 T0 non-stop 2260


Air Canada 756
Airbus A319 12:30 pm
San Francisco, CA (SFO) 8:20 pm
Toronto, Canada (YYZ) J9 C1 Z1 Y9 M9 U9 B9 H9 V9 Q6 L4 A4 S0 R9 K9 N9 G6 P4 E4 T0 non-stop 2260


Air Canada 784
Airbus A319 3:05 pm
San Francisco, CA (SFO) 11:05 pm
Toronto, Canada (YYZ) J9 C6 Z6 Y9 M9 U9 B9 H9 V9 Q9 L9 A0 S6 R9 K9 N9 G9 P9 E0 T6 non-stop 2260


Air Canada 754
Airbus A321 10:10 pm
San Francisco, CA (SFO) 6:13 am (Next day)
Toronto, Canada (YYZ) J9 C9 Z8 Y9 M9 U9 B9 H9 V9 Q9 L9 A0 S5 R9 K9 N9 G9 P9 E0 T5 non-stop 2260
As low as 437.40 USD for this leg (based on round-trip)