Summer is the best season for cruises to Alaska. As a result, most cruising itineraries take place between the months of May and September, notes USA Today.
Travellers looking to avoid crowds and spend less money should book travel for May, early June or September. Many schools in the United States take summer break from mid-June to August, causing an influx of passengers during these months.
Although September brings cooler temperatures than the rest of the cruising season, the month's great payoffs are its beautiful foliage and lack of mosquitoes. Sometimes, September's shortened daylight hours even allow for viewing of the Northern Lights.