San José (SJO) to San Salvador (SAL): 405 miles (652 km) great-circle, about 1h 20m nonstop by our estimate. Cheapest fare observed: $261 round-trip on Copa, with 1 stop, departing June 18, 2026.
$261 round-trip, Copa CM763, departing 2026-06-18 at 08:14, returning 2026-06-22. The recorded itinerary left on a Thursday, returning on a Monday 4 nights later; the fare was observed 54 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $261, it ranked 4th of the 30 round-trip fares we recorded from SJO (median $412). That is 64.4 cents per great-circle mile (round-trip price over one-way distance), above the SJO median of 21.6 cents across 29 round-trip routes.
Routes from SJO of similar length: Panama City (335 mi) at $300 and Guatemala City (531 mi) at $304.
Copa had the cheapest fare on 7 of 30 SJO routes. It is the 27th longest of the 30 routes we track from SJO.
Of 13 departure airports with a fare to San Salvador, San José (SJO) ranked 3rd at $261. Lowest: $241 from Los Angeles (LAX); highest: $603 from Atlanta (ATL); 4 nonstop. Cheapest-fare airlines (routes): United Airlines (7), Avianca (4), American Airlines (1) and Copa (1).
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones America/Costa_Rica, America/El_Salvador; flight time is our estimate.