arrival, proceed, reach, attain, result in
到 centers on reaching a destination or state: arriving somewhere, proceeding until you get there, attaining a goal, or a process resulting in an outcome.
到 combines 至 (arrive, reach) with 刂 (knife), suggesting the idea of cutting through to arrive at a destination or result.
The left side 至 means 'arrive', and the right side 刂 is a knife. Imagine cutting through obstacles with a knife to finally arrive at your destination.
For トウ, picture arriving at a tall tower (タワー) after a long journey: tower -> トウ, and you finally reach the top.
arrival
reaching; attaining; arrival
rush; flood; deluge
arrival; coming; advent
(cannot) possibly; (not) by any means; (not) at all; utterly; absolutely
careful; thorough; meticulous; scrupulous
untrodden (region, field of study, etc.); unprecedented (discovery, achievement, etc.)
cell inter-arrival time
arrival of an opportunity; having a chance
unexplored
home is wherever one lays one's hat; you can make your living anywhere in this world; there's room for us all in the world; wherever there are humans, there are burial places
present (received from someone); gift
arrival process
arrival lounge (of an airport)
estimated time of arrival; ETA
arrival time
arrival time; time of arrival
upon arrival of an item (items); as soon as one arrives
arrival chime (of an elevator, train, etc.)
station of arrival; destination