Southwest Airlines Flights from San Juan to Baltimore

Southwest Airlines on this route

Baltimore is a Southwest Airlines hub, so Southwest Airlines typically offers several daily departures on SJU–BWI, with nonstop service where demand supports it and connections through its other hubs otherwise. The nonstop flight time is about 3h 36m.

Fare classes available: Basic, Choice / Choice Preferred, Choice Extra. Southwest does not charge change fees on any fare; you pay the fare difference if the new flight is more expensive.

Recorded lows on SJU–BWI start at $153 one-way. That figure comes from cached search data and moves with demand, so treat it as a benchmark for what a good price looks like rather than a guaranteed fare.

Delta Air Lines and United Airlines both operate hubs at one end of this route, so nonstop or single-connection service is usually available, along with American Airlines and Southwest Airlines. Our agents can book any of them and compare fare classes side by side.

1,569 miles is a serious flight, roughly 3h 36m nonstop, and it is the range where premium economy or a domestic first-class seat can be worth asking about, particularly on midweek departures when upgrade fares drop.

When to fly

Southern departures see their highest fares over spring break and the winter holidays; late summer and the weeks after Labor Day typically bring the lowest prices.

On this specific route our fare history shows September as the cheapest month and January as the most expensive, a spread of $540 between the two.

Midweek travel almost always beats weekends on price here. If your dates are flexible by a day or two, tell the agent; shifting a Friday departure to Thursday or a Sunday return to Monday is the single most reliable way to cut the fare.

For domestic travel, booking three to eight weeks ahead usually captures the best price. Inside two weeks, fares climb; more than four months out, airlines have not yet released their cheapest inventory.