Some googling tells me that if you see “rhinopront” that’s a decongestant. That may help clear you up just enough for a flight. Supposedly there’s also NeoCitran and Robitussin over there, which you might be able to recognize from the appearance of the packages if not from the words on said packages. Failing that, trying to breathe some steam (not so long or so hot that you just irritate your passages further) and keeping up with the eucalyptus might do you just as much good anyway. Some ibuprofen, which is supposedly popular over there (according to some anecdotal stuff on Google anyway), would help with swelling too, and possibly relieve some pressure.

If it makes you feel any better, you’re not alone — the first few hits I got said that decongestants aren’t very popular over there.