Various car rental agencies (from well-known ones like Avis) to local outfits are available at both Alaska’s airports and seaports. Alaska 4×4 Rentals (Anchorage Airport): (907) 290-0064Alaska Auto Rental (Anchorage/Fairbanks/Denali): (907) 457-7368Avis (Sitka): (907) 966-2404Budget (Anchorage Airport): (907) 243-0150Hertz (Anchorage Airport): (907) 243-4118Thirfty Car Rental (Anchorage): (907) 276-2855