Frankfurt Airport shuts down at night. Scheduled flights stop at 11pm, with a grace period running to midnight. After that the runways are closed, because people live nearby and Germany doesn't mess around about aircraft noise.
On September 11, Condor flight DE1809 from Olbia in Sardinia was still in the air at 11:59pm.
Air traffic control had cleared the A320 to approach runway 25C. Landing gear was already down. By 875 feet, maybe thirty seconds from touchdown, it was almost home. And then the tower declined to give it landing clearance, because midnight had arrived.
So the crew pushed the power up, climbed away, and flew to Cologne instead. That's 85 miles away and one of the few big German airports open around the clock. Roughly 180 passengers got off there and were put on buses to Frankfurt. About two hours, in the middle of the night.

The flight was never going to make it
One detail turns this from bad luck into something else.
DE1809 was already running more than two hours behind before it left Sardinia, and didn't get airborne until well after its scheduled pushback. To beat the midnight cutoff, it needed to complete the flight roughly three minutes faster than the fastest time that route has ever been recorded doing.
Not faster than average. Faster than anything that route's ever done.
None of it was physically possible. Crew flew it well and made good time anyway, which is presumably why they got as far as 875 feet before anyone told them no.
Condor has done this before
In June 2025, a Condor A321 flying from Palma to Munich missed that airport's curfew by ten seconds. It was 2,101 feet from touchdown when clearance was refused.
That one diverted to Frankfurt-Hahn, about 230 miles from Munich, landing at 1:13am. Passengers were bussed to Frankfurt, arriving around 4:30am. They were then put on a 6:50am flight and reached Munich at 8am. Roughly eight hours late.
That aircraft flew to Munich empty and arrived before its passengers did.
Condor · two curfew misses, fifteen months apart
Seconds from the runway, twice
Both flights were denied landing clearance with the gear already down.
DivertedCologne, 85 miles away, one of few 24/7 German airports
ThenAbout 180 passengers bussed to Frankfurt, roughly two hours
DivertedFrankfurt-Hahn, about 230 miles from Munich, landing 01:13
ThenBus to Frankfurt by roughly 04:30, 06:50 flight, Munich at 08:00
MeanwhileThe aircraft flew to Munich empty and arrived first
Frankfurt's scheduled operations stop at 11pm with a grace period to midnight. Munich's curfew starts at midnight with a 30-minute extension for late arrivals. Flight-data analysis of DE1809 by One Mile at a Time. All figures as reported.
contrail.travel
Twice in fifteen months, and I don't think it's bad luck either time. Both flights left late, both crews flew hard, and both ran into the same wall at the same speed.
Why an airline takes the bet anyway
This is where it stops being funny.
Under EU passenger rights rules, a long delay and a cancellation land an airline in similar territory for compensation. If Condor cancels in Sardinia, it's on the hook for payouts plus hotels plus meals for 180 people, and the aircraft's stuck in the wrong country for the morning schedule.
Fly and make the curfew, and it owes the delay compensation while keeping the aircraft where it needs to be. Fly and miss, and it owes roughly what cancelling would have cost anyway.
Flying is the free option. Condor has almost nothing to lose by trying, and passengers absorb the difference between the good outcome and the bad one.
I doubt anyone at Condor was being careless. The incentives simply point at launching a flight that can't make it, and nothing in the rules pushes back.
The noise rule made more noise
Frankfurt's curfew exists to reduce noise.
A go-around at 875 feet means an A320 putting its engines to climb power directly over the neighborhoods the rule protects, at midnight, then flying away. Landing normally would have been quieter than what actually happened.
So the curfew got enforced exactly as written, and the thing it exists to prevent happened anyway.