There's no universal answer to "how long does it take to travel from X to Y" — the variables are too many. But you can get accurate estimates by specifying key parameters.
Driving: Google Maps, Waze, Apple Maps — input origin, destination, departure time for traffic-aware ETAs.
Flying: Google Flights, Kayak, Skyscanner — show block times (gate-to-gate) plus layovers. Add 2–3 hours for airport processing.
Transit: Rome2rio, Transit, Moovit — multimodal (train+bus+walk) with schedules.
Rail: Amtrak, Eurail, national railway sites — point-to-point schedules.
Sea: Ferry operators, cruise lines, freight schedules — highly schedule-dependent.
Define your points, mode, and timing — then let the right tool do the math.