Cheap flights from San Juan (SJU)

Puerto Rico's main airport and a major Caribbean US hub

Luis Muñoz Marín International is Puerto Rico's main airport and one of the busiest in the Caribbean, located about 13 km east of San Juan in the Carolina district. As US territory, it is treated as a domestic destination from the mainland. JetBlue is the largest operator, with American, Delta, United, Southwest, Spirit and Frontier all serving SJU, plus Iberia and Air Europa from Europe.

Why search this airport on Flightmussy

Airlines flying from San Juan (SJU)

Major carriers: JetBlue, American Airlines, Delta Air Lines, United Airlines, Southwest Airlines, Iberia. Low-cost carriers: JetBlue, Southwest Airlines, Spirit Airlines, Frontier Airlines.

Popular destinations from San Juan (SJU)

Frequently asked questions

When is the cheapest time to fly from San Juan?
Mid-August through early October is the cheapest window out of SJU, falling in hurricane season when leisure demand drops. Flightmussy's 12-month fare heatmap shows the cheapest week across all carriers, including the US LCCs that often beat legacy carriers on transcontinental flights to the mainland.
Which airlines fly from SJU?
JetBlue is the dominant carrier with a major focus city operation. American, Delta, United, Southwest, Spirit and Frontier all serve mainland US routes, Iberia and Air Europa fly Madrid, and Avianca connects Bogotá. SJU is also a hub for regional Caribbean traffic on Cape Air, Silver Airways and Tradewind.
Do I need a passport to fly from the US to SJU?
No — Puerto Rico is a US territory, so flights from the mainland are domestic and a US driver's license or other ID accepted by TSA is enough. International visitors still need passports and any visas required for US entry. Flightmussy is free and never asks for personal documents while you compare fares.
How far is Luis Muñoz Marín airport from San Juan?
SJU is about 13 km east of Old San Juan, typically a 20-30 minute drive on Highway 26. The Condado and Isla Verde resort areas are 10-15 minutes away. Taxis use a zone-based fare scheme and ride-share services operate from a designated pickup area outside the terminal.

Cheap flights and the cheapest month to fly, worldwide

About Flightmussy

Flightmussy is a free, independent flight search for travellers anywhere in the world. No signup, no ads, no tracking — email is optional, only for route price alerts. Compare fares across every airline and see 12 months of prices at a glance, including the low-cost carriers Google Flights often buries. Book directly with the airline or a trusted partner — we never add a markup.

Flight price data & research

Flightmussy runs its own 12-month forward fare scans across thousands of routes worldwide and publishes the data openly. Read the cheapest month to fly almost anywhere → — a global study of when fares are lowest — or browse the cheapest destinations from a city:

Popular routes

Popular long-haul routes

Popular regional routes

Browse by origin

Read the blog →