Travel calculators

Flight Time Calculator

Updated Sep 1, 2026 By Jehan Wadia
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LAX
LHR

Estimated Flight Time

Flight Duration
10h 53m
Distance
5,456 mi
Average Speed
550 mph
Estimated Arrival
Flight Details
Distance (miles)5,456 mi
Distance (kilometers)8,781 km
Distance (nautical miles)4,742 nmi
Aircraft TypeCommercial Jet
Cruise Speed550 mph / 885 km/h
Wind AdjustmentNone
Effective Speed550 mph
Flight Duration (decimal)10.88 hours
Flight Time by Aircraft Type
Aircraft Type Speed (mph) Speed (km/h) Flight Time
Flight Time Comparison

Introduction

The Flight Time Calculator helps you figure out how long a flight will take between two places. Knowing your flight time makes it easier to plan your day. This tool takes into account the distance between airports and average flight speeds to give you a quick estimate. It is a simple way to answer the common question: "How long is my flight?" Use it to compare routes, plan layovers, or just get a rough idea of your time in the air.

How to Use Our Flight Time Calculator

Enter your departure and arrival details below to find out how long your flight will take. The calculator will give you the total flight time between two locations.

Departure City or Airport: Type in the name of the city or airport where your flight takes off. You can use the airport code (like LAX or JFK) or the full city name.

Arrival City or Airport: Type in the name of the city or airport where your flight lands. Again, you can enter the airport code or the full city name.

Departure Date: Pick the date you plan to fly. This helps the calculator account for things like time zone changes and seasonal wind patterns that can affect flight duration.

Departure Time: Enter the time your flight is scheduled to leave. This is used to calculate your arrival time in the destination's local time zone.

Number of Stops: Select how many layovers or stopovers your flight has. A direct flight has zero stops. Adding stops will increase your total travel time.

Layover Duration: If your flight has one or more stops, enter the total time you will spend waiting at connecting airports. This is added to your overall travel time.

What Is Flight Time?

Flight time is the total amount of time an airplane spends in the air traveling from one place to another. It starts when the plane leaves the ground (takeoff) and ends when it touches down at the destination (landing). Flight time does not include the time you spend waiting at the gate, taxiing on the runway, or going through security.

Why Flight Time Matters

Knowing your flight time helps you plan your trip better. It tells you how long you'll be sitting on the plane, when you'll arrive, and how to prepare for the journey. Longer flights mean you should bring snacks, entertainment, and maybe a neck pillow. Shorter flights might only need a book or some music.

What Affects How Long a Flight Takes?

Several things can change how long your flight will be:

  • Distance: The farther apart two cities are, the longer the flight.
  • Wind: Strong headwinds slow a plane down, while tailwinds push it along faster. Flying east is often quicker than flying west because of global wind patterns called jet streams.
  • Flight path: Planes rarely fly in a perfectly straight line. They follow air traffic routes, avoid bad weather, and curve along the Earth's surface on longer trips.
  • Aircraft speed: Different planes fly at different speeds. Most commercial jets cruise at about 500 to 575 miles per hour (800 to 925 km/h).
  • Layovers and stopovers: A direct flight is always faster than one with connections, where you stop at another airport before continuing.

Flight Time vs. Travel Time

It's important to know the difference between flight time and total travel time. Flight time is only the time in the air. Total travel time includes getting to the airport, checking in, boarding, flying, landing, taxiing, and picking up your bags. A 3-hour flight can easily turn into a 6- or 7-hour travel day when you add everything up.

Time Zones and Arrival Times

When you fly across time zones, your arrival time can look very different from what you expect. For example, a 5-hour flight heading east might make it seem like you arrived only 2 hours after you left. Flying west, the opposite happens, and it can look like you traveled much longer. Always check whether times are listed in local time for each airport.


Formulas used

Haversine Distance
d = R \cdot 2 \arctan2\!\left(\sqrt{a},\;\sqrt{1-a}\right)
Haversine Intermediate (a)
a = \sin^{2}\!\left(\frac{\Delta\phi}{2}\right) + \cos(\phi_{1})\;\cos(\phi_{2})\;\sin^{2}\!\left(\frac{\Delta\lambda}{2}\right)
Effective Speed
v_{\text{eff}} = \max\!\left(50,\; v_{\text{cruise}} + v_{\text{wind}}\right)
Total Flight Time
T = \frac{d}{v_{\text{eff}}} + 0.5 \text{ hr}
Distance Conversion (km)
d_{\text{km}} = d_{\text{mi}} \times 1.60934
Distance Conversion (nautical miles)
d_{\text{nmi}} = d_{\text{mi}} \times 0.868976

Frequently asked questions

What is the difference between miles, kilometers, and nautical miles?

A mile is 5,280 feet and is used in everyday life in the US. A kilometer is 1,000 meters and is the standard unit in most other countries. A nautical mile is 1,852 meters and is the standard unit used in aviation and shipping. The calculator shows all three so you can use whichever you prefer.

Why would a flight east be faster than a flight west?

The jet stream is a band of fast-moving wind that generally flows from west to east at high altitudes. Planes flying east often get a tailwind boost from the jet stream, which makes the trip shorter. Planes flying west go against it, which adds time. You can simulate this effect using the wind adjustment slider.