Contrary to what its name suggests, the Emirates Airlines that Londoners refer to is a cable car journey across the River Thames.
Other popular ways to see London from above include the London Eye, The Shard, and even Duck & Waffle. The Emirates Airlines is a few tube stops east of these other attractions, running between the North Greenwich station and Royal Docks. Each way is 10 minutes, or opt for a round-trip for 20 minutes. A night flight experience is also offered after 7pm, which is basically the same trip but a few minutes longer in duration.
I took the journey around the time the sun was setting and was not disappointed. Here are a few photos from my experience:
ADDRESS: Unit 1, 2, 3 & 4, Emirates Cable Car Terminal, Edmund Halley Way, London SE10 0FR