Virgin Media, which installed WiFi at key Tube stations for the Olympics, said that 443,000 people went online underground over the two-week sporting showpiece.
Olympic stations Stratford, North Greenwich and West Ham were said to be the busiest WiFi-enabled stations, as travellers went online to check the latest medal news or local information. There was also sustained strong activity at Covent Garden, Canning Town and Waterloo.
August 1 was the busiest day for Tube WiFi thanks to Helen Glover and Heather Stanning winning Team GB's first gold medals, closely followed by Bradley Wiggins riding to glory in the Time Trial.
Overall, there were 8.83m individual online interactions completed over the WiFi between July 27 and August 12, including tweets, Facebook posts, emails and web page requests.
"In an unforgettable sporting fortnight, WiFi on the London Underground delivered a world class experience and, just like the Team GB athletes, unparalleled speeds," said Kevin Baughan, the director of Metro Wireless at Virgin Media.
"Thousands of people signed up every day, sharing photos and keeping up-to-date with the latest Olympic moments and, even at the very busiest stations, we've delivered a fantastic service."
London Underground's director of strategy and service development Gareth Powell added: "WiFi at Tube stations helped keep everyone moving and entertained throughout the Games with up-to-the-minute travel information and journey planners at their fingertips.
Copyright: Stephen Pond/PA Wire/Press Association Images"It's proving to be a great service and we expect it to be very popular during the Paralympics too. We look forward to continuing the rollout and connecting up to 120 London Underground stations by the end of the year."
Virgin Media offered full and free internet access over WiFi-enabled devices over the summer. After September, all users will be able to access a WiFi portal offering the latest travel and London information from Transport for London.
But anyone who wants to access the internet or other web-based services will need to sign up to a Virgin Media pay plan.
WiFi from Virgin Media is already available in 72 London Underground stations, but the rollout will gather pace again after the Paralympic Games, with the goal of covering 120 stations by the end of 2012.
More information on the Tube WiFi is available at the TfL or Virgin Media dedicated mini-sites.
Also during the Olympic period, the number of people using the TfL website and the Get Ahead of the Games mini-site increased significantly.
Tfl.gov.uk received 9m visits and 89m page views over the two weeks, including 3.5m visits and 24m page views to the TfL Journey Planner.
There were 1.1m visits and 4m page views to Get Ahead of the Games and 2.3m visits and 12m page views to the TfL mobile site.