Europe for 5

[Anonymous]

This is impossible to answer, OP!
Just as if someone asked: How much is a trip to North America? The options are endless!

The bigger question is; what do you want to see and do?

It will all start with your airfare expenses. One of the airlines with consistently very reasonable fares is Iceland Air. But all airlines run specials and you can get $500 per ticket on average to many cities.

[Anonymous]

Anonymous wrote:OP here - I guess I meant one of the more popular destinations but am flexible within that - so London, Paris, Dublin, Vienna, Lisbon, etc.

Vienna will be the most expensive of these to fly to. Look at pricing for the others TAP for Lisbon, Air France for Paris and so on. If you can manage without checking a bag tickets will be a lot less.