They flew to USA to bring Canadians and Yankees back home and take Hungarians back to Europe. This wasn't a cargo operation. It would be interesting to know the numbers of passengers on these flights, both to North America and back to Europe.
"Low cost" is no longer a low cost if you ask me. There is reserve where they can drop the prices off the tickets. This would promote travelling and in that case it'd take approx. one year to recover to pre-crisis levels.