yes, the alarm sub dial on the Seikos (7T62 movement, and others) can be easily used to track a second time zone.
Here is another suggestion for a flight watch.
Here is another suggestion for a flight watch.

Hi,flap5 said:hello watch experts!
this is my first time so please be gentle. I fly a lot a need a watch that does two time zones. Namely local and UTC. I love the look of the SNDA57P1 and read somewhere that the alarm sub dial can be used to show a second time zone. Is this correct? Can anyone help me with this?
Ideally id like an automatic chronograph with a dedicated analogue GMT hand like the Longines Grande Vitesse, but i love the value of the $150 seikos! There seems to be much more cred in wearing a watch that looks and feels so great for so little money.
many thanks to you all in advance.