Posted: Mon Apr 11, 2022 10:52am
I have the certificate because I am vaccinated. However, my daughter who is now Spanish has not been vaccinated and travelled by train from Belgium to Spain with no issues.
However I guess that is not a possibility for your friend to fly to one country and travel into Spain by train.
I believe if your friend has a PCR test within 48 hours before he flies then I think he will be fine to fly. The PCR test is really important for the non vaccinated. Almost more important than a certificate. I had to have a PCR test in London last November when I flew back from Spain even though I was vaccinated! I had to book the test before I flew in and it had to be within the first two days of my return.
Perhaps that is the answer for your friend.