Flight Deals from Washington Dulles Airport to San Salvador from $144

Flights from Washington to San Salvador are most expensive in late December and cheaper in late January, with significant price variations of around $500 throughout the year.

When planning your flights from Washington to San Salvador, consider that prices vary significantly throughout the year. The highest flight costs occur during late December, peaking around Christmas, where prices reach around the $900 mark. Conversely, the most affordable times to fly are in late January, with costs dropping to approximately $300. Generally, the high season spans late December to early January and again in late March to early April, showing a variation of about $500 between peaks and troughs. Low seasons usually run from early January to early March and from early September to late September.

Book your flight from Washington to San Salvador between 39 to 75 days before departure for the best prices, as costs rise significantly within 13 days of departure.

For your trip from Washington to San Salvador, the best time to buy is between 39 to 75 days before departure. Prices are lowest around 47 days prior, but remain fairly stable within this time frame. After 23 days from departure, prices begin to rise steadily, with significant increases occurring within the last 13 days—rising from around $424 to as high as $568 as your departure date approaches. We advise booking sooner rather than later, especially if it’s within 23 days, to avoid paying substantially more.