On 15 April 2010 air traffic in Western Europe closed because of the eruption of the Eyjafjallajökull volcano . Many travellers between the UK and the European mainland instead took the Eurostar train , all tickets between Brussels and London on 15 and 16 April being sold out within 3 ½ hours after the closure of British airspace . Between 15 and 20 April , Eurostar put on 33 additional trains and carried 165,000 passengers – 50,000 more than had been scheduled to travel during this period
eruption
2010 eruptions of Eyjafjallajökull
Eurostar