European rail ticket seller Interrail is knocking 15 per cent off the price of its global passes bought until March 31.

The spring promotion passes can be used in 30 countries for trips that begin before May 17 and can last up until June 15 this year.

“Aside from lower prices, the advantages of travelling in the springtime are often overlooked,” said general manager Carlo Boselli.

“However, during the pre-summer period, nature's beauty is peaking, and trains and cities are often perceived to create a more authentic experience before the bulk of the crowds arrive.”

Interrail passes are sold by local European railways and at www.interrail.eu. They are valid in Austria, Belgium, Bosnia-Herzegovina, Bulgaria, Croatia, Czech Republic, Denmark, FYR Macedonia, Finland, France, Germany, Great Britain, Greece, Hungary, Ireland, Italy, Luxembourg, Montenegro, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland and Turkey.