Cheap Flights from Boston to San Juan — $87

The route Boston — San Juan is served by many carriers — 4 in total, including JetBlue Airways, Frontier Airlines, Spirit Airlines, and United Airlines. This gives passengers wide opportunities: from finding the lowest fare (from $87) to selecting flights by schedule or service class. Our service aggregates data from multiple booking systems so you can compare offers in one place. This saves time and money: no need to check dozens of sites — just pick the right option and book online.

Fly from Boston to San Juan with ease — our search scans over 700 airlines, more than 50 travel agencies and 5+ major booking systems to uncover the best prices, schedules and booking conditions for your getaway. Compare options quickly and book the ideal flight for your Puerto Rico escape.

Boston Logan International (BOS) serves as the region’s primary international gateway and a full-service hub for major carriers, while smaller general aviation fields sit on the city’s periphery. Logan typically hosts a mix of legacy airlines and several low-cost carriers, so fares can range from premium on transatlantic routes to competitively priced domestic options. The airport lies roughly 3–5 miles from downtown Boston; taxis and rideshares usually take 15–30 minutes depending on traffic, shuttle services and the MBTA Silver Line bus provide 20–35 minute links (fares often under a few dollars), and the Blue Line plus free shuttle connects to terminals. Pros: central location and frequent flights; cons: can be busy with variable traffic delays and parking costs.

Fly nonstop from Boston to San Juan for the fastest, most convenient way to trade cold for Caribbean sunshine—less travel hassle, no layovers, and more time to enjoy beaches and city discoveries. While connecting options can sometimes be cheaper, booking a direct flight saves time and adds comfort, making it a smart choice for a quick getaway or business trip.

Luis Muñoz Marín International Airport (SJU) is Puerto Rico’s primary international gateway and a full-service hub for both legacy and low-cost carriers, typically handling most transatlantic, mainland U.S., and regional flights. It sits about 8 miles (13 km) east of Old San Juan, with taxi rides to the city center usually taking 15–25 minutes and costing roughly in the mid-single to low double digits; public buses and airport shuttles offer cheaper alternatives but can be slower. SJU tends to be competitively priced compared with smaller regional airports, especially on nonstop routes. Pros: broad route network and multiple ground-transport options; cons: periods of heavy traffic and occasional queueing at peak times.

In different months, ticket prices from Boston to San Juan vary: minimum — $105 (May 2026), maximum — $241 (November 2026). Typically, the flight costs $159–$373.