The quickest and most iconic route is via the Jubilee line. Alight at North Greenwich station, which literally spits you out inside the complex. The station was built specifically for the Millennium Dome, and its futuristic design still feels fresh.
Trains run every few minutes, making it a no-brainer for most visitors. A single journey from central London, say Oxford Circus, takes about 20 minutes. Pro tip: Avoid the last train out if you can; the post-event queue can feel like a festival in itself.
The River Bus: The Glamorous Option
For a proper London entrance, take the Uber Boat by Thames Clippers. It drops you right at the O2’s pier, offering breathtaking views of the Thames. The journey from Embankment takes around 30 minutes and feels like a mini-cruise.
It’s more expensive than the Tube but worth it for the vibe. Fun fact: The O2’s roof is actually the world’s largest single-span roof structure. Seeing it approach from the water is a visual treat you won’t forget.
