Flight Time Calculator

Enter your departure date and time, the flight duration, and the time zone offset difference between destination and origin. The calculator instantly shows your arrival local time, arrival date, and whether you land the next day — all in your browser, nothing uploaded.

📖 How it works & FAQ

Departure date (local)

Departure time (local)

Flight duration — hours

Flight duration — minutes

Time zone difference — hours (arrival − departure)

Time zone difference — extra minutes

Work out your landing time across time zones

Booking a flight and can't tell whether you land Tuesday night or Wednesday morning? This flight time calculator does the clock math for you. Give it three things — your departure local time and date, the flight duration in hours and minutes, and the time zone difference between your destination and your origin — and it returns the arrival local time, the arrival date, and a clear next-day flag when your landing rolls past midnight.

The math is simple but easy to fumble in your head: arrival local time = departure local time + flight duration + (arrival UTC offset − departure UTC offset). Flying New York (UTC−5) to London (UTC+0)? The difference is +5 hours, so a 7:00 PM departure on a 7-hour flight lands at 7:00 AM the next day. Flying the other way, you enter −5 and often land "earlier" on the clock than the elapsed time suggests. Everything runs in your browser — no lookups, no data sent anywhere.

How to use it

Pick your departure date and enter the departure time shown on your ticket (always local to the departure airport).
Enter the flight duration in hours and minutes, straight from your booking or airline schedule.
Enter the time zone difference: the destination's UTC offset minus the origin's. Eastbound is usually positive, westbound negative. Use the extra-minutes menu for half-hour zones like India (+5:30).
Read the results instantly — arrival local time, arrival date, a +1 day badge if you land the next day, plus your actual time in the air.

Results are estimates only, not professional travel advice; schedules, daylight saving changes, and delays vary, so confirm times with your airline.

FAQ

How do I find the time zone difference?: Subtract the departure city's UTC offset from the arrival city's. Los Angeles (UTC−8) to Tokyo (UTC+9) is 9 − (−8) = +17 hours. A quick search for "UTC offset" plus the city name gives you each number.
What about daylight saving time?: Use each city's offset as it will be on your travel date. If your destination is on summer time, its offset is usually one hour higher than standard — enter that adjusted value.
Why does the tool say I arrive before the elapsed flight time?: Flying west, the clock shifts backward. A 6-hour flight with a −5 hour difference only moves the local clock one hour forward, so arrival can look surprisingly close to departure time.
Does this work for half-hour and 45-minute time zones?: Yes. Set the hours field, then pick 15, 30, or 45 extra minutes — the minutes follow the sign of the hours, so −4h 30m is handled correctly for zones like Newfoundland.