Houston (IAH) to San Salvador (SAL): 1,211 miles (1,949 km) great-circle, about 2h 55m nonstop by our estimate. Cheapest fare observed: $252 round-trip on United Airlines, nonstop, departing June 11, 2026.
$252 round-trip, United Airlines UA742, departing 2026-06-11 at 16:54, returning 2026-06-15. The recorded itinerary left on a Thursday, returning on a Monday 4 nights later; the fare was observed 47 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $252, it ranked 16th of the 30 round-trip fares we recorded from IAH (median $247). That is 20.8 cents per great-circle mile (round-trip price over one-way distance), above the IAH median of 17.9 cents across 30 round-trip routes.
Routes from IAH of similar length: Las Vegas (1,220 mi) at $145 and Washington (1,189 mi) at $241.
United Airlines had the cheapest fare on 2 of 30 IAH routes. It is the 16th longest of the 30 routes we track from IAH.
Of 13 departure airports with a fare to San Salvador, Houston (IAH) ranked 2nd at $252. 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/Chicago, America/El_Salvador; flight time is our estimate.