Glossary
Definition: A dead-leg (or empty leg) is a flight segment that an aircraft must operate without revenue passengers, typically a repositioning flight. In commercial aviation, it can also refer to heavily discounted fares on underbooked segments.
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Term at a glance
| Term | Dead-Leg |
|---|---|
| One-liner | A dead-leg (or empty leg) is a flight segment that an aircraft must operate without revenue passengers, typically a repositioning flight. In commercial aviation, it can also refer… |
| Where it matters | Premium-cabin booking decisions, fare-rules interpretation, airline-product comparison. |
| Related concepts | Positioning Flight · Consolidator Fare · Yield Management · Dynamic Pricing |
| Last verified | 2026-05-07 |
Dead-legs occur when aircraft need to be repositioned between airports for operational reasons. In private aviation, this creates empty flights that charter companies sell at steep discounts — sometimes 50–75% off normal charter prices.
In commercial aviation, the concept is slightly different. Airlines sometimes have flights that are heavily underbooked in premium cabins, particularly on the “weak” direction of a route (e.g., business class from a leisure destination back to a business hub). These flights often have deeply discounted consolidator fares available.
BookMyBusinessClass agents monitor these directional pricing imbalances to find exceptional business class deals. Flying in the off-peak direction on popular routes can yield dramatic savings. For example, business class from Asia to the US is often significantly cheaper than the reverse direction during certain seasons.
In booking practice
At a Glance
| Term | Quick definition | Reference |
|---|---|---|
| Day Room | A day room is a hotel room booked for daytime use rather than overnight, typically for a few hours, allowing… | Read |
| Denied Boarding | Denied boarding occurs when an airline refuses to allow a confirmed, checked-in passenger to board a flight,… | Read |
| Consumer Protection | Consumer protection in air travel encompasses the laws, regulations, and industry standards that safeguard… | Read |
| Dine on Demand | Dine on demand is a business or first class meal service where passengers choose when to eat during the… | Read |
| Consolidator Host Network | A host consolidator network is an established travel agency or network that holds wholesale airline fare… | Read |
| Direct Airside Transit Visa (DATV) | A UK transit visa required for certain visa-required nationalities to connect through a UK airport even when… | Read |
Related Terms
A day room is a hotel room booked for daytime use rather than overnight, typically for a few hours, allowing travellers to rest, shower, and refresh during long layovers or early arrivals.
Denied boarding occurs when an airline refuses to allow a confirmed, checked-in passenger to board a flight, usually due to overbooking. Passengers are entitled to compensation and rebooking under DOT and EU261 rules.
Consumer protection in air travel encompasses the laws, regulations, and industry standards that safeguard passengers’ rights regarding refunds, compensation, safety, and fair treatment by airlines and travel agencies.
Dine on demand is a business or first class meal service where passengers choose when to eat during the flight rather than following the cabin’s fixed meal schedule, offering restaurant-style flexibility.
A host consolidator network is an established travel agency or network that holds wholesale airline fare contracts and issues tickets on behalf of specialist consolidator agencies. Specialist consolidators source net fares and book under the host’s ticketing infrastructure.
A UK transit visa required for certain visa-required nationalities to connect through a UK airport even when staying entirely airside. DATV is distinct from a full UK visa — it permits airside transit only, no UK entry. Visa-Waiver-eligible nationalities do not need DATV.
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