Reykjavik is 5 hours ahead of Boston during Eastern Standard Time (November to March). Reykjavik uses Greenwich Mean Time (GMT, UTC+0) year-round while Boston uses Eastern Time (ET, UTC-5/-4). When it's 12:00 PM in Boston, it's 5:00 PM in Reykjavik.
Iceland does not observe daylight saving time. During Boston's daylight saving time (March to November), the difference reduces to 4 hours as Boston moves to UTC-4 while Reykjavik stays at UTC+0.
Best calling time: 9:00 AM - 12:00 PM Boston time. This corresponds to 2:00 PM - 5:00 PM in Reykjavik (or 1:00 PM - 4:00 PM during EST), catching Icelandic afternoon hours.
Boston is a popular departure point for Iceland tourism. Icelandair has made Reykjavik a transatlantic hub, with Boston being one of its key US destinations. The flight takes about 5 hours.