London Underground fare amounts are all listed in a table available on the official Transport for London website, TFL.Gov.Co.UK. Fares vary by the fare zones traveled.
The London Underground is divided into nine fare zones, with Zone 1 being closest to the city center and Zone 9 being farthest from the city center. Fares for a single journey are calculated by the number of zones traveled, with a premium added to the central Zone 1.
For example, if a passenger travels only within Zone 2, the one way fare is 1.7 pounds. However, if a passenger travels from Zone 2 through Zone 4, the one way fare is 2.4 pounds.