Travelers have found it’s best to book a flight 56 days in advance to save up to 28% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 56 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from San Diego to Guam 1-2 weeks in advance for as low as $1,878, or $2,255 for flights within the next 24 hours.
Due to multiple factors, expect to potentially pay more when booking in February. For low rates, March can be a great choice for travel to Guam. Flights to Guam from San Diego in March are about $1,872 on average during March, but can be found for as low as $1,018.