What's Happening in Delhi Right Now

Each winter, Delhi-NCR experiences periods of moderate to dense fog—especially during early mornings and late nights. When visibility drops sharply, airports may activate Low Visibility Procedures (LVPs), which can slow runway operations and ground movement.

The result is familiar to travellers: delayed departures, late arrivals, occasional diversions, and missed connections that ripple across airline networks.

Why Fog Delays Flights (In Simple Terms)

In aviation, it's not just about "seeing the runway." What matters is runway visual range (RVR)—how far pilots and systems can reliably detect runway centreline lights, signage, and approach cues.

When RVR drops below safe thresholds, operations slow down because:

• Aircraft need greater spacing between movements.
• Taxi speed and runway crossings reduce due to limited visibility.
• ATC must manage more complex sequencing for safety.

Safety always comes first—fog disruptions are operationally frustrating, but they exist to prevent runway incursions and landing risks.

Low Visibility Procedures & CAT III: What They Mean

1) Low Visibility Procedures (LVP)

LVP is a set of airport safety protocols activated during low visibility conditions. You may still see flights operating, but at a reduced pace. This is why your flight can be delayed even if it isn't cancelled.

2) CAT III & "Fog-Capable" Landings

Many modern runways and aircraft support CAT III Instrument Landing Systems (ILS), enabling landings in very low visibility conditions. However, CAT III doesn't magically remove delays—because runway occupancy, taxi safety, congestion, and traffic flow still limit throughput.

Passenger Checklist: How to Travel Smarter During Delhi Fog

Before You Leave for the Airport

• Check your flight status (airline app + airport website) more than once.
• If you have connections, build a buffer of 2–4 hours in fog season.
• Keep essentials in cabin baggage: chargers, medicines, one change of clothing, snacks.

At the Airport

• Arrive early: 2.5–3 hours domestic, 3.5+ hours international (especially during morning peaks).
• Be ready for gate changes and boarding time shifts.
• If delayed, ask airline staff about rebooking priority and best alternatives.

If Your Meeting Is Time-Critical

• Consider a later departure when visibility improves (midday can be better).
• Evaluate alternate routings via nearby airports (case-by-case feasibility).
• If your time loss costs more than the ticket: explore charter options.

The Real Impact: How Fog Disrupts Business Travel

Delhi is a major hub. When fog slows IGI operations, the impact extends beyond one flight: missed board meetings, delayed plant visits, postponed site inspections, and rescheduled international connections.

For leadership travel, the biggest cost is often not the fare—it's the time lost, the momentum broken, and the opportunity delayed. That's why many corporates plan winter itineraries with extra buffers—or keep a contingency option ready.

When Private Charter Can Make Sense in Fog Season

Private charter is not a "fog-proof" solution—weather and operational approvals still apply. However, when conditions allow, charter can help by:

• Reducing dependence on packed commercial schedules and cascading delays.
• Offering more flexible timing (subject to slot/ATC and airport operations).
• Enabling mission-based planning for urgent business or family travel.

Frequently Asked Questions: Delhi Fog and Flights

Does fog always mean flight cancellations?

Not always. Many flights operate with delays when LVPs are active. Cancellations typically happen when disruption cascades or when aircraft rotation becomes impractical.

Is landing more affected than take-off?

Both can be affected. Landings depend on approach minima and RVR; take-offs can be impacted due to runway visibility and ground movement constraints.

What time of day is worst at Delhi during fog season?

Early mornings and late nights are usually most impacted. Even when fog lifts later, delayed aircraft and passengers can keep schedules disrupted.

What's the single best tip to avoid stress?

Build buffer time. If your trip is important, treat December–February in North India as a high-risk operational window and plan with flexibility.

Can helicopters or private jets fly in fog?

Helicopters and private aircraft are also subject to visibility regulations and operational approvals. While they offer schedule flexibility, they cannot bypass weather safety rules.

What is Runway Visual Range (RVR)?

RVR is the distance a pilot can see down the runway, measured using specialised instruments. It's the key metric used to determine whether aircraft can safely land or take off.

How long do Low Visibility Procedures last?

LVPs remain in effect as long as visibility stays below operational thresholds. They can last from a few hours to most of the day during severe fog episodes.