Travellers to Prague face Metro Line A delays and crowds during light festival, 15-18 Oct

Prague's Signal Light Festival, the largest cultural event hosted in the Czech capital, runs from 15 to 18 October 2026. It typically attracts between 250,000 and 500,000 attendees each year, and travellers in the city should expect large crowds and travel delays during the event.

Key facts

• When: 15–18 October 2026
• Where: the City Centre and the Dejvice neighbourhood of Prague, with possible extension to neighbouring municipalities
• Expected turnout: between 250,000 and 500,000 attendees each year
• Peak times: 7:00 PM to 12:00 AM each night
• Transport hotspot: metro Line A and areas near the major displays

What is happening?

Lighting installations will be displayed across streets, public spaces and buildings in the City Centre and in Dejvice. The festival may also extend to neighbouring municipalities, although no specific locations outside the city have been confirmed.

The displays are expected to be most visible between 7:00 PM and 12:00 AM each night, which is when the largest crowds are anticipated.

Which areas and transport are affected?

Large crowds and travel delays are expected near the major displays and on metro Line A. The heaviest disruption is forecast during the evening viewing hours, when the installations are lit.

What this means for travellers

Anyone travelling through central Prague or using metro Line A on the evenings of 15–18 October should allow extra time for journeys and anticipate delays near the display sites. Travellers are advised to expect event-related travel disruption and to maintain enhanced situational awareness in crowds.

No road closures, entry restrictions or other specific transport measures have been announced for the festival period.