Minneapolis (MSP) to San Juan (SJU): 2,406 miles (3,872 km) great-circle, about 5h 20m nonstop by our estimate. Cheapest fare observed: $434 round-trip on Southwest, with 2 stops, departing June 17, 2026.
$434 round-trip, Southwest WN3743, departing 2026-06-17 at 11:15, returning 2026-07-01. The recorded itinerary left on a Wednesday, returning on a Wednesday 14 nights later; the fare was observed 53 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $434, it ranked 19th of the 30 round-trip fares we recorded from MSP (median $275). That is 18.0 cents per great-circle mile (round-trip price over one-way distance), close to the MSP median of 19.3 cents across 30 round-trip routes.
Routes from MSP of similar length: Los Angeles (1,533 mi) at $122 and Miami (1,502 mi) at $249.
Southwest had the cheapest fare on 5 of 30 MSP routes. It is the 12th longest of the 30 routes we track from MSP.
Of 20 departure airports with a fare to San Juan, Minneapolis (MSP) ranked 16th at $434. Lowest: $127 from Orlando (MCO); highest: $632 from Washington DC (IAD); 7 nonstop. Cheapest-fare airlines (routes): Frontier (9), Spirit (4), American Airlines (2), JetBlue (2), Southwest (1) and United Airlines (1), plus 1 more.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones America/Chicago, America/Puerto_Rico; flight time is our estimate.