Washington DC (DCA) to San Salvador (SAL): 1,903 miles (3,062 km) great-circle, about 4h 20m nonstop by our estimate. Cheapest fare observed: $275 round-trip on United Airlines, with 1 stop, departing April 25, 2026.
$275 round-trip, United Airlines UA2190, departing 2026-04-25 at 11:05, returning 2026-05-11. The recorded itinerary left on a Saturday, returning on a Monday 16 nights later; the fare was observed 0 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $275, it ranked 10th of the 30 round-trip fares we recorded from DCA (median $998). That is 14.5 cents per great-circle mile (round-trip price over one-way distance), below the DCA median of 26.4 cents across 30 round-trip routes.
Routes from DCA of similar length: Guatemala City (1,867 mi) at $719 and San Juan (1,558 mi) at $580.
United Airlines had the cheapest fare on 5 of 30 DCA routes. It is the 19th longest of the 30 routes we track from DCA.
Of 13 departure airports with a fare to San Salvador, Washington DC (DCA) ranked 4th at $275. 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/New_York, America/El_Salvador; flight time is our estimate.