AT A GLANCE

TAKE THE TRAIN

Places like the Algarve or California have good coastal railways with affordable fares. Faro to Lagos costs €7.50 (£6.50), while LA to San Diego is $44 (£36) — less if you book ahead.

AVOID PEAK SEASON

Consider travelling from September onwards. A car costing £1,000 for a week from Avis at Dublin airport on 6 August is 79% cheaper if you book a month later.

CONSIDER A PACKAGE

Buying a flight and a rental car as part of a fly-drive package means the provider is fully responsible. If the outbound flight is cancelled and no replacement is available, you’re entitled to a full refund within two weeks.