Free Check
Will my flight
be delayed?
Find out in seconds. Enter your flight number and get an instant risk assessment based on 9 real-time factors — weather, strikes, ATC, airline punctuality, and more.
How to check if your flight will be delayed
Enter your flight number
Type your flight code (e.g. FR5121, BA553). Works with any airline worldwide.
Select your travel date
Pick when you're flying. Date-specific data makes the prediction more accurate.
See your risk score
Get a score from 0 (no risk) to 100 (very high risk) with an AI-powered explanation of what's driving the risk.
How to know if your flight will be delayed
There's no way to predict flight delays with 100% certainty, but you can assess the probability based on real data. FlightGuard analyzes 9 independent factors in real time to give you a risk score from 0 to 100 for any flight, on any date, up to 16 days in advance.
What causes flight delays?
Flight delays happen for many reasons, often a combination of factors:
- Weather — Wind, rain, snow, fog, and thunderstorms are the most common causes. FlightGuard checks forecasts at both departure and arrival airports.
- Air traffic control — When airspace is congested, flights get ground delays or rerouting. EUROCONTROL data shows real-time ATC restrictions.
- Airline operations — Late incoming aircraft, crew scheduling, and technical issues. Airlines with lower on-time performance are flagged.
- Strikes — Airline staff, airport workers, or ATC controllers. FlightGuard monitors active and planned strikes across Europe.
- NOTAMs — Official notices that can restrict airport or airspace operations (runway closures, military exercises, etc.).
When to check
The best times to check your flight risk are:
- 2-3 days before — Weather forecasts start becoming reliable
- The day before — Most operational disruptions are known
- Day of travel — Final check before heading to the airport
You can also set up a free email alert on FlightGuard, and we'll notify you automatically if the risk level for your flight changes significantly.
Understanding your risk score
FlightGuard's score ranges from 0 to 100:
- 0-14 (Low risk) — Your flight is likely to depart on schedule. No significant risk factors detected.
- 15-34 (Medium risk) — Some uncertainty. Keep an eye on it and check again closer to departure.
- 35-100 (High risk) — High probability of delay or cancellation. Consider backup options and know your passenger rights.
Your rights under EU261
If your flight is delayed by more than 3 hours or cancelled, you may be entitled to compensation of up to EUR 600 under EU regulation 261/2004. This applies to all flights departing from an EU airport, or arriving at an EU airport on an EU-based airline.
Common questions about flight delays
Will my flight be delayed tomorrow?
Enter your flight number on FlightGuard to get a real-time risk assessment. The tool analyzes weather forecasts, ATC restrictions, airline punctuality, and 6 other factors to estimate the likelihood of delay. Data is updated every 15 minutes.
Will my flight be delayed due to weather?
Weather is one of the 9 factors FlightGuard analyzes. The tool checks wind speed, precipitation, visibility, and severe weather alerts at both origin and destination airports. If weather is a risk factor, it will be highlighted in the analysis.
How do I know if my flight will be delayed?
There is no way to know with 100% certainty, but you can assess the probability. FlightGuard gives you a risk score from 0 to 100 based on real-time data. A score below 15 means your flight is likely on time. Above 35 means high risk of delay or cancellation.
Will my flight be delayed due to a strike?
FlightGuard monitors active and upcoming strikes across European airlines, airports, and ATC services. If a strike affects your route, it will be reflected in a higher risk score. Set up a free alert to be notified of changes.
How early should I check if my flight will be delayed?
Check at least 2-3 days before departure for an initial assessment, then again the day before and on the day of travel. Weather and operational data improve as you get closer to the date. FlightGuard updates every 15 minutes.
What should I do if my flight is likely to be delayed?
If the risk score is high (35+), consider: arriving at the airport earlier, having backup travel options ready, checking your EU261 compensation rights, and setting up a FlightGuard alert. If the airline cancels your flight, you may be entitled to up to EUR 600 in compensation under EU regulation 261/2004.
Continue reading
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