TAP Air Portugal are currently running a Black Friday promo where you can fly across Europe from only €49 roundtrip.
For example, fly from Lisbon, Portugal to Madrid, Spain for only €49 roundtrip (See image below).

 

DEPART:
Europe

 

ARRIVE:
Europe

 

RETURN:
Europe

 

DATES:
Availability from January to November 2023

 

STOPS:
Lisbon/Porto

 

AIRLINES:
TAP Air Portugal