Alaska Airlines flies to a wide range of destinations, mainly across the United States, Canada, and parts of Mexico, Belize, and Costa Rica. Their network is especially strong on the West Coast, with major hubs in Seattle, Anchorage, Portland, and Los Angeles. They also serve cities in Alaska, the Midwest, and the East Coast. Internationally, their routes focus on nearby leisure destinations rather than long-haul travel. If you’re trying to see whether they fly to a specific city, it usually comes down to where you’re starting from and the season, since some routes operate only part of the year.