Book Online For The Best Savings! Did you know you always get the best fares online? Our best fares are available when you book online at www.stenaline.ie. That’s a saving of €15 on a car booking and €5 on a foot passenger booking compared to booking by phone. We're committed to always finding you the lowest fares possible for your trip, so take a look at our Low Fares Finder to find the best deal for you! Book early. save plenty, travel happy!