If you are thinking about traveling from the UK to the USA, Australia, Japan or any other far-flung destination, then you might be asking yourself what is a long haul flight and what is the number of hours required before a flight is deemed long haul?
Long-haul flights link travellers to a more distant destination from the usual short-haul routes. They last for many hours in the air, meals and entertainment are provided, and a great deal of sitting, as well as sometimes multiple time zones, are involved.
But the duration of flight is not the only criterion for defining a long flight. In the terms of common aviation, flights of over six hours are commonly referred to as long-haul flights, and official guidance from the UK passenger-rights authorities has been introduced based on distance categories for specific purposes.
World Flight Vibes has an article about the long haul flight definition, the common flight hours, actual examples and tips to get you ready for your next long flight.
What Is a Long Haul Flight?
A long-haul flight is a flight of a significant distance, typically between countries or continents and usually lasting several hours.
Popular long haul destinations for UK travellers are the United States, Canada, Thailand, Singapore, Japan and Australia. The actual flight time varies depending on the departure airport, destination, aircraft, wind, and the route flown and whether it is a direct or connecting flight.
In common aviation usage, flights longer than six hours are considered “long-haul. But the airlines and travel organisations may have different thresholds and thus the term does not have one universal definition.
For instance, a direct flight from London to New York is deemed to be long haul. A flight from London to Sydney is also long haul, but the trip is much longer and could require a connection, depending on the flight booked.
The key point is that long-haul is about the nature of the trip, not a specific number of hours for all airlines and routes.
Long Haul Flight Definition: Hours and Distance
The term long haul meaning can be interpreted in two ways: one, in terms of flight time, and two, in terms of distance between airports.
1. By flight duration
Flight-duration categories are general guidelines and can differ from airline to airline and industry source.
| Flight category | Typical duration |
| Short-haul | Often under 3 hours |
| Medium-haul | Often around 3–6 hours |
| Long-haul | Commonly more than 6 hours |
| Ultra-long-haul | Often around 12–16 hours or longer |
These are general descriptions and not hard and fast rules. There are some routes that are near the category boundaries, and airlines may have different categorisations.
2. By flight distance
Another way of categorising flights is by the distance they travel. The United Kingdom government travel guidelines for air travel distinguish between the following categories while outlining some of the arrangements for passengers’ rights:
| Flight category | Distance |
| Short-haul | Under 1,500 km |
| Medium-haul | 1,500–3,500 km |
| Long-haul | Over 3,500 km |
These distances are for purposes of certain passenger-rights advice only and are not to be interpreted as a generic distance classification for all airlines.
For the official explanation, read the GOV.UK Air Passenger Travel Guide.
How Many Hours Is a Long Haul Flight?
A long-haul flight commonly lasts more than six hours, although the exact classification depends on the airline and the context.
Many long-haul flights from the UK will take between 7 and 14 hours. Journeys to destinations farther into Asia or Oceania can take considerably longer.
Here are some examples to give you an idea of flight times:
| Approximate flight time | Example route | General category |
| Around 7–8 hours | London to New York | Long-haul |
| Around 11–12 hours | London to Bangkok | Long-haul |
| Around 13 hours | London to Singapore | Long-haul |
| Around 14–15 hours | London to Tokyo | Long-haul |
| Around 12–15 hours, depending on service | London to Perth | Very long-haul |
| More than 20 hours of total travel time | London to Sydney with a connection | Long-distance journey |
These are illustrative estimates, not guaranteed flight schedules. Actual timings vary by airline, route, season, winds and operational conditions. Total journey time includes any connection and is different from time spent in the air.
When comparing flights, look at the time of the flight’s departure and time of return, the connection time as well as the nonstop or multi-stop nature of the flight. This will help you get a better idea of how long your trip will take.
What Is Considered a Long Flight?
A flight is generally considered long when it involves a substantial amount of time in the air, often six hours or more in common aviation terminology.
However, what is considered a long flight also depends on the traveller. Someone who regularly flies internationally may find an eight-hour journey manageable, while someone taking their first overseas trip may find a six-hour flight tiring.
Several factors can affect how demanding a flight feels:
- Duration: Spending many hours in the same seat can make comfort and movement more important.
- Time zones: Crossing several time zones can make adjusting to your destination more difficult.
- Departure time: An overnight flight may provide an opportunity to sleep, although sleeping on an aircraft can be difficult.
- Seat and cabin: Legroom, recline, cabin layout and available space can affect comfort.
- Connections: A connecting journey may take much longer overall than a nonstop flight.
- Personal needs: Travellers with children, mobility requirements or particular comfort preferences may need additional planning.
For a real-world example of a long international journey, read our guide to long-haul flights from London to Australia.
Examples of Long-Haul Flights From the UK
Looking at familiar routes makes it easier to understand what counts as long-haul.
London to New York
London to NY is a classic long haul route. The nonstop flight is typically about 7 or 8 hours, depending on the wind and schedule.
It is often shorter on the way back as the wind may affect the travel time across the Atlantic.
London to Bangkok
The flight duration from London to Bangkok is about eleven to twelve hours. This is a good example of a long haul flight to Southeast Asia.
The time difference and the potential for jet lag upon arrival should also be considered.
London to Singapore
The typical flight time for a direct London-Singapore journey is approximately 13 hours, subject to various factors. Singapore is also a key transit hub for trips to other destinations in Asia and the Pacific.
London to Tokyo
The flight time between London and Tokyo is typically about 14 to 15 hours (non-stop) depending on the airport, routing, and the wind. Please always check up-to-date schedules before booking.
London to Perth
Perth is a helpful example for those who are traveling from the UK to Australia. The flight will take approximately 12 to 15 hours, depending on the service and routing.
Learn more about long-haul flight from London to Australia in our article.
London to Sydney
London to Sydney is an example of an exceptionally long journey. The flights may be made via a connecting airport, and the entire trip can last over twenty hours, depending on the itinerary.
The travel time for a nonstop flight is different than the travel time for an itinerary with one or more stops. Never confuse air time with travel time.
Long-Haul vs Short-Haul Flights: What Is the Difference?
The main distinction between long-haul and short-haul flights is the distance traveled and the average duration of the flight.
| Feature | Short-haul flight | Long-haul flight |
| Typical duration | Often under 3 hours | Commonly more than 6 hours |
| Common destinations from the UK | Nearby European cities | North America, Asia and Australia |
| In-flight meals | May be limited or optional | Often available on longer scheduled services |
| Sleep onboard | Usually less relevant | May be important on overnight flights |
| Time-zone changes | Often limited | May cross several time zones |
| Comfort planning | Usually simpler | Seat choice, movement and rest can matter more |
These are general guidelines and not rules. The services available depend on the airline, fare type, route and aircraft.
To learn more about airlines, check out our article on the best long-haul airlines 2026.
What Is an Ultra-Long-Haul Flight?
An ultra-long-haul flight is a very long flight that does not stop anywhere between the origin and the destination, typically around 12 to 16 hours or longer.
Such flights link two far-flung regions without the need for a change of aircraft at an intermediate airport. They can make a connection less cumbersome, but they also require a very long time on board.
The definition of ultra-long-haul differs from one sector of the aviation industry to another. It is best interpreted descriptively and not as an international classification.
When planning any of these trips, be aware of the comfort of the seats, the amount of movement you can have, when you eat, when you sleep and how you will cope with the time difference.
How to Prepare for a Long-Haul Flight
With a bit of planning, a long flight can be more comfortable. It’s best to think about the duration of the trip, not what the airline will supply.
Choose a seat that suits your needs
Think about whether you like a window seat for sleeping, aisle seat for getting to the aisle or if offered and appropriate, extra leg room. Each airline has its own seat selection policies and fees.
Check out our article on the best seat on a plane to discover the various seating positions and how to select the best one for you.
Dress comfortably
Be sure to wear comfortable clothes and an extra layer of clothes because the temperatures will differ in the cabin. Removable and re-wearable shoes can also be helpful.
Plan for sleep and time differences
When traveling by airplane overnight, take into account the local time of your destination. An eye mask, earplugs or a suitable travel pillow may help you relax.
Don’t assume that you will sleep the whole trip. Taking time to relax and planning for rest can make the flight easier.
Move around when it is safe
Follow the duty of the Cabin Crew and move around or stretch as necessary when it is safe to do so. Individuals who are at risk of developing blood clots should consult a trained health care provider before traveling.
Keep essential items accessible
Have travel papers, medication and other necessary items readily available. Please review baggage policy and applicable airport security restrictions prior to departure with your airline.
For more practical information about preparing for airport departure, read our guide to long-haul flight tips and airport arrival planning.
What Is the Longest Flight in the World?
The answer depends on whether you mean the longest route by distance, the longest scheduled nonstop service or the longest flight actually operated on a particular day.
Airlines introduce, change and discontinue routes, and flight times can vary with winds and operational conditions. For that reason, rankings of the world’s longest flights can change.
For very long distances, look at distance as well as time. There is no direct relationship between distance and time of flight, depending on the winds and the route.
Frequently Asked Questions
Is a 5-hour flight considered long-haul?
A five-hour flight may be considered medium-haul under some common classifications. Definitions vary, and airlines may use different categories for operational or commercial purposes.
Is a 6-hour flight long-haul?
Six hours is around the boundary between medium-haul and long-haul in many common classifications. Some sources use a threshold of more than six hours, so the answer depends on the classification being used.
Is a 7-hour flight long-haul?
Yes. A seven-hour flight would generally be considered long-haul under common aviation terminology.
Is a 10-hour flight a long-haul flight?
Yes. Ten hours is firmly within the usual long-haul category.
Is a 12-hour flight ultra-long-haul?
A twelve-hour flight may be described as ultra-long-haul, although the threshold differs between airlines and aviation organisations. Some reserve the term for longer nonstop journeys.
Is long-haul based on distance or hours?
It can be based on either, depending on the context. Airlines commonly use flight duration and route characteristics, while UK passenger-rights guidance uses distance bands for certain rules. There is no single worldwide standard that applies to every situation.
Are long-haul flights always international?
No. The term describes a lengthy journey rather than necessarily crossing a national border. However, many familiar long-haul services connect countries and continents.
Are direct and nonstop flights the same?
Not always. A nonstop flight travels between its origin and destination without stopping. A direct flight may retain the same flight number while making an intermediate stop.
What should I consider when booking a long-haul flight?
Consider total journey time, seat comfort, baggage allowance, connection duration, onboard services and arrival time. Comparing these factors can help you select a flight that suits your budget and travel needs.
Final Thoughts
So, what is a long haul flight? It is generally a lengthy flight covering a substantial distance, commonly lasting more than six hours in everyday aviation terminology. The precise definition depends on the airline or context, and official distance categories may be used for specific passenger-rights purposes.
For UK travellers, routes to North America, Southeast Asia and Australia provide familiar examples. Understanding the difference between flight time, total journey time and distance makes it easier to compare routes and prepare for the journey ahead.
Before booking, check the current flight schedule, connection details and onboard services. Then plan your seat, rest and essentials around the actual journey you will be taking.
Explore more travel advice from World Flight Vibes to make your next long-haul journey easier to plan.
Sources and Further Readings
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