Heathrow ATC outage disrupts IndiGo’s Delhi-London service, with recovery delays likely
A NATS flight-data processing failure cancelled, delayed and diverted UK flights, including IndiGo’s Delhi-Heathrow 6E3, which diverted to Paris. While the issue has been resolved, aircraft and crew repositioning could prolong disruption for IndiGo, Air India, British Airways and Virgin Atlantic on India-UK routes.
What happened
A NATS flight-data processing failure disrupted India-UK services, delaying, cancelling and diverting flights including IndiGo’s Delhi-Heathrow 6E3. Although
Key facts
- IndiGo flight 6E3 diverted from Delhi to Paris
- Around 1,300 UK airport flights cancelled on Tuesday
- 177 cancellations recorded for Wednesday
- 38 of Heathrow's 661 scheduled arrivals cancelled or unable to operate Tuesday
- British Airways cancelled 16 of 333 scheduled departures Tuesday
Why this matters
The disruption highlights the strategic value of resilient airport, ATC and crew-repositioning contingencies for airlines expanding long-haul international networks.
What to watch
- Heathrow and NATS confirmation that flight-data processing is fully stable with no residual flow restrictions.
- Number of Heathrow arrivals cancellations, diversions and average arrival delays during the next two bank periods.
- Status of IndiGo 6E3 and its return rotation, including aircraft location and crew-duty implications.
- Air India, British Airways and Virgin Atlantic India-bound cancellation or aircraft-substitution notices.
- Heathrow slot restrictions, ATC flow-management measures and airport congestion notices over the next 24-48 hours.
- Extent of fare spikes and inventory depletion on Delhi-London and Mumbai-London alternatives.
- IndiGo and peers will issue rolling schedule advisories, waivers and rebooking options for affected India-UK passengers.
- Airlines may prioritize long-haul aircraft recovery, position reserve crews and use larger aircraft or alternative routings where available.
- Carriers will seek to preserve Heathrow slots while coordinating revised arrival windows, ground handling and crew-rest compliance.
- Travel agencies and corporate travel managers will shift affected passengers to Air India, British Airways, Virgin Atlantic, Gulf hubs or Paris/European rail-air alternatives where capacity permits.