Free Online Flight Time Zone Calculator
Calculate arrival time across departure and arrival time zones.
Time zones are entered as fixed UTC offsets. Select the offset that applies on your travel date. Daylight saving changes are not applied automatically, so use the offset shown for that date in a time zone database or on your booking confirmation.
Arrival time is departure wall-clock time plus the flight duration plus the time zone difference. Crossing the international date line can move the calendar day backwards even on a short flight.
About the Flight Time Zone Calculator
A flight that leaves at 09:00 and lasts six hours does not always land at 15:00. Cross a few time zones and the local clock at the destination tells a different story. This calculator combines a departure local time, the departure and arrival UTC offsets, and a flight duration to produce the arrival local time, the calendar day offset, and both departure and arrival times in UTC. It is useful for booking connections, arranging airport pickups and understanding why an eastbound red-eye can land the next morning.
Fixed offsets instead of city names
The tool asks for UTC offsets rather than city names because offsets are unambiguous. UTC+05:30 always means five and a half hours ahead of Coordinated Universal Time, while a city can change offset when daylight saving begins or ends. Select the offset that applies on your specific travel date. For example, New York is usually UTC−05:00 in winter and UTC−04:00 in summer, and London switches between UTC+00:00 and UTC+01:00. Using the wrong seasonal offset shifts the result by an hour.
The arithmetic behind arrival time
The calculator first converts the departure wall-clock time to UTC by subtracting the departure offset. It adds the flight duration to get the arrival UTC time, then adds the arrival offset to produce the destination wall-clock time. That final value is what appears on the airport clock and on the arrival board. The day offset compares the calendar date of the departure and arrival wall times, so a flight that lands tomorrow shows +1 day, and a dateline crossing can show −1 day.
Planning connections and pickups
Arrival local time is the number to give a friend picking you up, but it is not the time you clear the airport. Add taxi-in, immigration, baggage claim and customs before promising to meet someone. For connections, use the layover calculator with the arrival and departure times at the connecting airport rather than the origin time. The UTC columns are handy for comparing schedules across countries without mentally adding or subtracting offsets, especially when an itinerary lists times in mixed zones.
Limitations and edge cases
The model assumes a fixed offset for the whole flight, which is normally the right planning approach because the schedule is expressed against local clocks at each end. It does not include taxi time, weather delays, diversions or daylight saving transitions that occur during the flight. Offsets beyond UTC−12:00 and UTC+14:00 are not used in civil aviation. The calculator also assumes the duration you enter is the actual elapsed flight time, not the difference between departure and arrival clock times.
Frequently asked questions
Why does my arrival date change?
When you fly east, the destination clock is ahead, so the local arrival time can be later on the same day or on the next day. When you fly west, the clock is behind and you may arrive earlier on the clock than you departed, even though time has passed.
Should I use the departure or arrival offset for the flight duration?
Use neither for the duration itself. Duration is elapsed time and is independent of zones. The offsets only convert the departure and arrival wall-clock times to and from UTC, which is how the calculator keeps the elapsed time correct.
Does the calculator handle daylight saving time?
Not automatically. It uses the offsets you select, so check whether each airport is observing daylight saving on the travel date. A one-hour error is the most common result of using a summer offset in winter or the reverse.