Flight Arrival Time Calculator
What time you land in local time, and whether it is still the same day, from the departure time, the two time zones and the flight length.
Results
What this tool does
Every booking confirmation gives you a departure time in one city's clock and an arrival time in another's, and the gap between them is not the length of the flight. This page works the other way: you give it the real flight time and the two offsets from UTC, and it tells you what the clock will say when the wheels touch down — including whether you will have crossed into the next day, or back into the previous one.
Formula
converts the departure to UTC, adds the duration, and converts back to the local time at the destination
Variables
| Symbol | Meaning | Unit |
|---|---|---|
dep_time | Departure, local time | — |
dep_offset | Departure city, hours from UTC | h |
arr_offset | Arrival city, hours from UTC | h |
dur_h | Flight time, hours | h |
dur_m | Flight time, minutes | min |
OUT | Lands at, local time | — |
DS | Which day it lands | — |
DU | Time in the air | — |
TD | Time difference between the cities | — |
DU2 | Departure in UTC | — |
AU | Arrival in UTC | — |
Worked example
- Departure, local time10:30
- Departure city, hours from UTC1 h
- Arrival city, hours from UTC-4 h
- Flight time, hours8 h
- Flight time, minutes5 min
- Lands at, local time13:35
- Which day it lands0
- Time in the air8h05
- Time difference between the cities-5h00
- Departure in UTC09:30
- Arrival in UTC17:35
Limitations
- Dates are handled as calendar dates. Time zones, daylight saving changes and public holidays are not taken into account.
Frequently asked questions
Why do I have to type the UTC offsets myself?
Because a list of cities would have to know, for the date you are flying, whether each of them is on summer time — and countries change those rules, sometimes at a few months' notice. A stale list would give confidently wrong answers. Two numbers you can read off your phone's clock app give right ones. Half-hour and quarter-hour offsets work here too: India is 5.5 and Nepal is 5.75.
Can it land the day before?
Yes, and the line for the day says so with a minus one. A short flight west across several time zones — an early morning departure from Europe to the American west coast, say — genuinely lands at a local time earlier than it left. Nothing has gone wrong; the clocks have simply moved further back than the flight took.