Metro - Line E (https://www.metrodoporto.pt/pages/285?Start=69&End=20&Type=1&Day=2022-03-19&Time=16%3A16), or
getbus (https://www.getbus.eu/en/reserva.php)
Rede de Expressos (https://rede-expressos.pt/pt/horarios-bilhetes)
Metro - Line E and Line A, C or F (https://www.metrodoporto.pt/pages/285?Start=69&End=22&Type=1&Day=2022-04-03&Time=15%3A15 )
Porto - Campanhã to Aveiro
Aveiro to Pampilhosa
Pampilhosa to Guarda
See more (Porto - Campanhã to Guarda)
Metro Lisboa: Red Line (https://www.metrolisboa.pt/viajar/mapas-e-diagramas/ )
Rede de Expressos (https://rede-expressos.pt/pt/horarios-bilhetes)
Aeroporto Humberto Delgado (LIS) to Guarda (Train Station) use:
Metro Lisboa: Red Line (https://www.metrolisboa.pt/viajar/mapas-e-diagramas/ )
Lisboa - Oriente to Guarda
See more (Lisboa - Oriente to Guarda)