This 15-ml packaging is small enough for you to bring in your carry-on on a plane. If you're having trouble picking a fragrance, this Giorgio Armani EdP could be what you're after.
From Cosmetify
Giorgio Armani Si Eau De Parfum 15ml
The Beauty Store
Giorgio Armani Si Eau de Parfum Spray 15ml for Her
This product is also available at 3 unverified stores.