How windy must it be to delay a plane takeoff on an average airliner flight?

The decision to delay a plane's takeoff due to wind depends on several factors, including the type of aircraft, the direction of the wind, and the specific conditions at the airport. Here are some key points to consider:

1. Crosswind Limitations: Most commercial airliners have specific crosswind limitations. For example, a Boeing 737 has a maximum crosswind component of about 35 knots (approximately 40 mph) on a dry runway, while a Boeing 777 can handle up to 38 knots (about 44 mph)13. If the crosswind exceeds these limits, takeoff may be delayed or the aircraft may use a different runway.

2. Tailwind Limitations: Tailwinds can also affect takeoff, typically with a maximum allowable component of 10-15 knots (about 11-17 mph)3. Tailwinds increase the distance needed for takeoff and landing.

3. General Wind Conditions: While there is no single wind speed that universally delays flights, strong gusts or sustained winds above 45 knots (about 52 mph) can cause issues with ground operations, such as opening and closing aircraft doors15. However, this does not directly affect takeoff unless it contributes to significant crosswind or tailwind components.

4. Airport and Airline Policies: Airports and airlines may impose stricter wind limits than those set by the aircraft manufacturer for safety reasons13. This means that even if the wind is within the manufacturer's limits, flights might still be delayed if the conditions are deemed unsafe.

In summary, while there is no specific wind speed that always delays flights, crosswinds above 35-40 mph and tailwinds above 10-15 mph can cause problems. The decision to delay is influenced by the specific aircraft, runway orientation, and safety policies in place.