Luton to London Bridge

Take the shuttle bus from the airport to Luton Airport Parkway station.

Take a Thameslink train direct to London Bridge station.

No need to buy tickets online.

https://www.london-luton.co.uk/to-and-from-lla

(Scroll down and choose the Rail option on the above webpage. London Bridge is the stop after Blackfriars on the map).

Thanks! It says online I get a "group save" (4 people). Will I get that not on the internet as well?

Yes - ask for it when you buy the tickets in person.

If you have trouble booking online there is a rail ticket office near the arrivals at Luton Airport.

I’ve done this same double journey Luton>>Thames River Area>>Gatwick via Thameslink. I did buy tickets online in advance because the Groupsave discount was being redefined and I wanted to lock in the lower fare. Note that whatever ticket you buy will be good for that whole time band, not a specific train, so if you buy an off peak ticket then you can take any off peak train, same for super off peak, etc.

There’s a trick to buying the Luton ticket so that it includes the shuttle bus.

There’s a trick to buying the Luton ticket so that it includes the shuttle bus.

The trick is buy the train ticket from "Luton Airport". Don't buy it from "Luton" or "Luton Airport Parkway".

Will add a couple of things:

Arriving/departing London on a train is head and shoulders ahead of doing the same by tube, especially a train service that has stops near so much lodging it’s walkable.

You are somewhat insulated from the international tourist throngs both on this train and then staying near the river.