Head West on the N4. At Kinnegad, continue west on the N6. At Oranmore, take N18 South, and continue to N67 (at Kilcolgan). From there it's a scenic drive across the Burren to Lisdoonvarna. Then it's a hop, Skip and a jump to Doolin on the coast route; R479. just follow the signposts
Exit the airport on the N19. Go North on the N18 to Ennis. Take the R476 or the N85 to Lisdoonvarna. Then proceed on the R479 to Doolin as signposted