Airport Timezone & Flight Time Calculator
Pick your departure and arrival airports on the left and enter the departure time and flight duration; the local arrival time, time difference, date change, and daylight-saving status line up on the right.
Trip
Choose departure and arrival airports to calculate the arrival time.
Arrival
Calculations use the device IANA time zone data and the browser Intl API, with daylight saving applied automatically. Boarding cut-off, layover, and in-airport transfer times are not included, so confirm your ticket and airport guidance.
ready to use.
- Visible firstKeep the input and result positions clear.
- Results firstPut the main number up front and keep the process secondary.
- Less to askNo sign-up or extra information before using the tool.
How to read the local arrival time from your departure time and flight time
When you fly abroad, the first thing that gets confusing is what time you land in local time. A time zone gap alone tells you how many hours two cities differ, but the real arrival time needs the flight time and daylight saving added on top. This airport time difference and flight time calculator brings all three together and shows the local arrival time and date.
You use it the way the screen is laid out. Pick the departure and arrival airports from the flag list or by IATA code, then enter the departure date and time and the flight time from your ticket. The local arrival time, arrival date, the time difference between the two airports, and any date change line up on the right, and the result updates every time you change a value.
Every calculation runs on the IANA time zone data built into your browser. Daylight saving and part-hour offsets like India and Nepal are applied by date, and no install or sign in is needed.
Time difference, flight time, and arrival time are not the same
These three are often mixed up but mean different things. The time difference is the gap between the UTC offsets of two cities, the flight time is how long the plane is actually in the air, and the arrival time is the departure time plus the flight time converted back to the arrival city. This tool shows all three on one screen.
- Time difference = arrival offset minus departure offset
- Flight time = the real duration on your ticket
- Arrival time = departure time plus flight time in local time
The three steps that produce the local arrival time
The math runs in three steps. First the departure local time is turned into UTC, then the flight time is added, and finally it is converted back using the arrival airport offset. When the departure date sits in a daylight saving period, the offset for that date is chosen automatically.
- 1. Departure local time to UTC
- 2. UTC plus flight time
- 3. UTC back to arrival local time
Example: New York to London
Say you set New York (JFK) as departure and London (LHR) as arrival, then enter a morning departure and the flight time from your ticket. London runs about five hours ahead of New York, so the result shows the London arrival time, the arrival date, the time difference, and whether the date changes. Change any value and it recalculates at once.
- Departure: New York, morning
- Flight time: from your ticket
- Result: London local time and date, plus the time difference
Finding airports by IATA code and flag list
The three-letter code on every airport, such as JFK, LHR, or LAX, is the IATA code. Type the code or the city name in the search box, or pick from the list where flags and city names are shown. When a city has more than one airport, like Tokyo Haneda and Narita, select each one separately.
- Three-letter codes: JFK (New York), LHR (London), LAX (Los Angeles)
- Search by code or city, or pick from the flag list
- Choose each airport when a city has several
UTC offsets and part-hour time zones
UTC is the reference point for time differences. London is UTC+0 in winter, and Korea is UTC+9. Most offsets fall on the hour, but some do not: India is UTC+5:30, Nepal is UTC+5:45, and Iran is UTC+3:30. This tool keeps these part-hour offsets instead of rounding them.
- The reference point is UTC
- India +5:30, Nepal +5:45, Iran +3:30
- UTC and GMT mean nearly the same thing in practice
Daylight saving changes the arrival time
Regions such as the United States, Europe, and Australia move their clocks by an hour for part of the year. The same route can land at a different local time in summer and in winter. Because the offset is chosen from the departure date, you only need to enter the travel date correctly. A few zones, such as Arizona, do not observe daylight saving at all.
- New York UTC-4 in summer, UTC-5 in winter
- Offset chosen automatically by the departure date
- Some zones, like Arizona, never change
When the arrival day moves by the date line
On long routes the arrival date often differs from the departure date. A +1 day or -1 day marker appears next to the arrival date, and the date change card shows it too. Crossing the Pacific frequently moves the day by one because the route passes the international date line.
- +1 day or -1 day next to the arrival date
- No marker when the day is the same
- Common on trans-Pacific routes
Perceived shift, connections, and layovers
The perceived shift adds the flight time and the time difference to show how far the arrival clock moves from your body clock, which is useful before you plan sleep. For a connecting trip, calculate each leg on its own or enter the total travel time as the flight time. Boarding cut-off, baggage, and immigration times are not part of the result.
- Perceived shift = flight time plus time difference
- Connections: each leg separately or one total travel time
- Boarding, baggage, and immigration times are excluded
Using the result and what to double check
Knowing the arrival time early makes pickup and the first day easier to plan. Share the arrival time in local terms with whoever meets you, and recheck the hotel check-in date on routes where the day changes. Swap route shows the return leg, and copy result shares the plan. The result is a planning reference; airline schedule changes and delays are not looked up, so confirm the times on your ticket.
- Plan pickup and the first day in arrival local time
- Recheck hotel check-in when the day changes
- Swap route for the return leg, copy result to share
Airport time difference, flight time, and arrival time FAQ
How do I calculate the arrival time from New York to London?
Pick New York (JFK) as departure and London (LHR) as arrival, then enter the departure date and time and the flight time from your ticket. The tool converts the departure local time to UTC, adds the flight time, and converts it back with the arrival offset to show the local arrival time and date. If the date falls in a daylight saving period, the correct summer or winter offset is used automatically.
Can I calculate with just the IATA code?
Yes. Type a three-letter code like ICN, JFK, or LAX, or a city name, in the search box and the airport is selected. If you do not remember the code, pick it from the list where the country flag and city name are shown together.
What is the difference between a time zone calculator and a flight time calculator?
A time zone calculator only shows how many hours apart two cities are. This tool adds the real flight time on top, so it also gives the local arrival time and date. Use it when you want to know what time it will be when you land, not just the current gap between two cities.
Is daylight saving (DST) handled automatically?
Yes. The real offset for the departure date is used, so New York is UTC-4 in summer and UTC-5 in winter. Fixed part-hour offsets, such as India at UTC+5:30, Nepal at UTC+5:45, or Iran at UTC+3:30, are calculated as they are.
Why does the arrival date show the previous or next day?
When the flight time and the offset difference are added, the local arrival date can move one day ahead (+1) or one day back (-1) from the departure date. Long routes that cross the Pacific often pass the date line and change the arrival day.
What does perceived shift mean?
It adds the flight time and the offset difference to show how far the arrival clock moves forward or back from the departure wall clock. A larger value usually means heavier jet lag, so it helps when you plan your sleep after arrival.
Does it include connections or real delays?
No. Real delays, gate changes, and layover waits are not looked up. For a connecting trip, calculate each leg separately or enter the full travel time as the flight time, and confirm the final times against your ticket.
Reference date: 2026-07-16. Time zone calculations use the IANA time zone data (Intl API) built into your browser.