Itinerary for November/December. Suggestions?

Can you fly in/out different airports instead of Lisbon?
Faro and Porto perhaps?

Gail, we're locked into Lisbon at this point.

Skip the Algarve (Lagos). Late fall is not the time to go. Go to Évora instead.

If you decide to skip the Algarve, I'd say catch a train after landing and head to Porto on the same day. Then work your way back to Lisbon. That way you can group Lisbon days together at the end. The train ride is nice and you can nap.

Edit to add: If you want to see both ends of Portugal, perhaps take a train or bus to Lagos. Get a cheap flight to Porto. Then work your way back to Lisbon to finish.

I definitely agree with skipping Lagos at that time of year, adding days to Lisbon and taking the train and starting in Porto. Evora is definitely worth a visit. I visited the town of Salema (about 12 miles west of Lagos) in early November and it was dead. I think I was the only tourist in town.

The boat trips to the caves from Lagos aren’t likely to be running in December. Lagos in September is lovely but Lagos in December could be cool and wet.

Food and wine you can find anywhere in Portugal. There’s not as much history in the Algarve as further north.

Good points, folks. We're deleting Lagos for this trip and revising/finetuning our itinerary a bit. Maybe spreading "base" over three locations - Lisbon, Porto, Coimbra - and planning daytrips from each.

One aside, I notice that the Portuguese train line offers a 50 percent discount for seniors. Who can say no to that bargain?