Find a great deal and save up to 35% by booking at least 45 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Belfast International to San Juan within the next two weeks, with the cheapest ticket starting at £694.
Due to multiple factors, expect to potentially pay more when booking in December. For low rates, March can be a great choice for travel to San Juan. Flights to San Juan from Belfast International in March are about £704 on average during March, but can be found for as low as £363.
At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Belfast International and San Juan for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.
Temperatures around the 32 °Cs can be experienced in June. The weather in San Juan is hotter than in Belfast International. Plan for potential changes in flight availability as peak weather approaches in this location.