At Luton, the month you fly in matters little; the route matters far more. The CAA has no monthly figures for delays and cancellations, only the 2025 total, and by month you can see only how often weather disrupted arrivals.
August and weather
Between January 2018 and September 2026, EUROCONTROL imposed weather restrictions on arrivals at Luton on 7% of August days; July is quieter still (6%), October is the worst (21%). Such days come cheap: an average of 0.28 minutes of waiting per arriving flight, and it rarely goes as far as a cancellation. All months: weather at Luton.
Eastbound routes
In 2025, 0.9% of the airport's flights were disrupted, against 1.6% nationally, but the longer eastern routes fare worse. On Suceava 3.1% of 1,302 flights, on Tel Aviv 2.6%, on Tirana 2.0%, on Amsterdam 0.9%. Tel Aviv is beyond 3,500 km, so compensation depends on how late you arrive: £260 for 3–4 hours, £520 for more than 4 hours. easyJet UK disrupted 0.8% of 43,784 flights, Wizz Air UK 1.7%.