This might not not appeal to many and we'll just have to hope the £ has recovered a fair bit more if you're hoping to go for shopping.
It's not a direct flight and I'm not sure what the luggage alowance is.
Outbound From Manchester on 22nd November
Stopping at Dublin 1hr20min, doubling back to Heathrow for a 1hr45min stop. All in all it's 13hr 40 journey.
Return on 29th November via Heathrow (4hr10 mins stopover), total journey time 12hr 10.
Although it's British Airways, some flights will be operated by partner airlines.
May be other dates available this price, not checked