Can Planes Fly in Thunderstorms?
Yes. Airliners fly on days with thunderstorms all the time. Pilots use onboard weather radar to route around storm cells rather than through them, and the FAA's guidance is to keep at least 20 miles from a severe cell. Delays come from airports pausing ground work near lightning, not from the aircraft.
Can planes land in thunderstorms?
Yes, when the storm is not sitting on the approach path. The danger on approach is not rain or lightning but wind shear: a sudden change in wind speed or direction close to the ground, and in its worst form a microburst, a column of air falling out of a storm cell and spreading along the runway.
That is what brought down Delta Flight 191 at Dallas/Fort Worth on 2 August 1985. The FAA's own account: the Lockheed L-1011 "encountered a microburst while attempting to pass through a rain shaft underneath a convective storm cell" on approach to runway 17L, and 134 of the 163 people on board were killed at the scene. The FAA calls the accident "the catalyst in accelerating the development of airborne real-time windshear detection, windshear avoidance philosophy, and the widespread deployment of early warning systems" (FAA Lessons Learned, updated 6 January 2026).
Forty years on, that is why a landing in a storm looks the way it does: airports run wind-shear alert systems, aircraft carry their own, and when a cell is over the approach, controllers hold arrivals in the air or send them to another airport until it moves. Your flight circling for twenty minutes is the system working.
Can planes fly in lightning?
Yes, and they are hit more often than most passengers know. The National Weather Service says commercial passenger aircraft "are hit by lightning an average of one or two times a year", that they "are designed and built to have conducting paths through the plane to take the lightning strike and conduct the currents", and that aircraft "often initiate the strike because their presence enhances the ambient electric fields" in a storm.
A strike is loud and bright from a window seat and is over in a fraction of a second. What it does cause is a delay after landing: "when it is suspected that a plane was hit by lightning, there is a mandatory inspection for damage, which can delay flights and be quite expensive" (NWS).
The design rules exist because of one crash. On 8 December 1963, Pan Am Flight 214, a Boeing 707, was struck near Elkton, Maryland, and the Civil Aeronautics Board found that "a lightning strike had ignited the fuel-air mixture in the number-one reserve fuel tank"; 81 people died. Static dischargers, bonding of everything fixed to the wing surface, and flame arrestors on fuel vents followed. The NWS's summary today: "there has not been a lightning-caused commercial transport airplane crash in many decades".
Is it safe to fly in a thunderstorm?
The honest answer is that airliners do not fly in thunderstorms; they fly around them, and the margin is written down. The FAA's Aeronautical Information Manual (section 7-1-27, revised February 2025) tells pilots: "Do avoid by at least 20 miles any thunderstorm identified as severe or giving an intense radar echo", and "Don't attempt to fly under the anvil of a thunderstorm", because of the risk of severe clear-air turbulence beneath it.
So the aircraft is not being tested by the storm. The cost of that margin is yours: a longer routing, a hold, a diversion, or a later departure. Expect the seat-belt sign, and expect bumps on the way around a line of storms; that is turbulence, not danger.
Can planes take off in thunderstorms?
Usually the aircraft could, and the airport will not let it. The limit is on the ground. The Flight Safety Foundation describes the standard practice at large airports: "if a lightning strike occurs within 5 mi (8 km) of the terminal, safety measures go into effect, and operations are halted until no strikes are detected for 15 minutes to safeguard ground crews, especially those refueling aircraft" (Ground Strike, 3 November 2025).
No refuelling, no baggage loading, no pushback. That is the "ground stop" you hear about on a summer afternoon: a queue of fully boarded aircraft waiting for the lightning detection network to give fifteen clear minutes.
Do pilots avoid thunderstorms?
Yes, deliberately and by rule. Every airliner carries weather radar in the nose; dispatchers plan routes around forecast convection before departure; air traffic control reroutes streams of aircraft around cells as they build. The 20-mile standoff above applies to severe cells; smaller ones are routed around with less margin but still not entered.
This is also why a flight can be delayed on a cloudless day: the storm is at the other end, or across the route.
What is the 30-minute thunder rule?
It is a ground rule, not a flying rule. The National Weather Service's guidance for anyone outdoors is: "When you hear thunder, immediately move to safe shelter", and "Stay in safe shelter at least 30 minutes after you hear the last sound of thunder."
Airports run a shorter, instrumented version of the same idea. With a lightning detection network reporting strikes within a set radius, ramp operations restart 15 minutes after the last strike inside it rather than 30 minutes after the last thunder heard by ear.
Has a thunderstorm ever brought down a plane?
Yes, and both cases above are the ones that rewrote the rules: Pan Am 214 in 1963, lightning igniting fuel vapour, which produced today's lightning-protection standards; and Delta 191 in 1985, a microburst on approach, which produced wind-shear detection and training. The rules you are delayed by are the answer to those two days.
Delayed by weather and want the fare spread over time anyway? You can book flights now and pay later on Laters.com.
Frequently Asked Questions
Will my flight be cancelled because of a thunderstorm?
Most thunderstorm disruption is delay, not cancellation: a ground stop of fifteen minutes to an hour, a hold on approach, or a reroute. Cancellations come when a line of storms sits over a hub for hours and crews time out.
What happens if lightning hits my plane?
A flash and a bang, then nothing. The current runs through the aircraft's conducting skin and exits, usually at the tail. After landing the aircraft is inspected before its next flight, which is where the delay comes from.
Why did we take off in the rain but not in the storm an hour earlier?
Rain is not the issue. Lightning within about five miles of the terminal stops refuelling and loading; once fifteen minutes pass with no strike, the ramp reopens and departures resume.
Is turbulence near a storm dangerous?
It is uncomfortable, and the seat-belt sign is the protection. The flight crew's 20-mile margin from severe cells exists to keep the aircraft out of the turbulence that would be dangerous.
Buy Now Pay Later, Cryptocurrencies, over 100+ ways to pay
