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Did you mean flights from São Luís to Washington?
United States
Washington Dulles International Airport
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Brazil
Marechal Cunha Machado International Airport
At present, there are no direct flights from Washington to São Luís.
However, there are several flights from IAD to SLZ with a stopover.
Select a stopover airport from the list below to see which airlines operate flights from IAD to SLZ, and to see what flight schedules are available.
São Luís is a tropical destination known for its warm climate, with temperatures between 25°C and 30°C (77°F to 86°F) throughout the year. The area is characterized by high humidity and frequent rainfall.
Since São Luís is situated south of the equator, the dry season runs from May to October. This makes it the ideal time to visit. During these months, you can expect mostly dry weather, while the wet season can bring days of rain. Temperatures remain high year-round, along with high humidity levels.

Currently, there is only one airline that covers the full route (with 1 stopover) from Washington IAD to São Luís SLZ, which is TAP Portugal.
All other flights from Washington to São Luís are operated by a combination of multiple carriers, which are listed below:
Star Alliance is the only alliance that covers the full route (with 1 stopover) from Washington IAD to São Luís SLZ.
You can fly the full journey from IAD to SLZ in Economy, Premium Economy and Business Class. First Class is not available on this route, at least not on the full route with just 1 stopover.
Currently, there is only one aircraft type that covers the full route (with 1 stopover) from Washington to São Luís, which is the Airbus A321neo.
All other flights from Washington to São Luís are operated by a combination of multiple aircraft types.
The distance between Washington and São Luís is 3,567 miles (5,740 kilometers).
However, because there are no direct flights between IAD and SLZ, the distance of the full journey varies between 6,197 and 7,205 miles (or 9,973 and 11,595 kilometers), depending on your stopover airport.
Flights from Washington to São Luís take from 13 hours and 30 minutes up to 15 hours and 30 minutes, depending on your stopover airport.
Please note that these times refer to the actual flight times, excluding the stopover time in between connecting flights, as this depends on your stopover airport as well as your date(s) of travel.
There is 1 airport in São Luís: Marechal Cunha Machado International Airport (SLZ).
From 13 hours and 30 minutes up to 15 hours and 30 minutes, depending on your stopover airport.
Note that this excludes the layover time in between connecting flights.
Because there are no direct flights between IAD and SLZ, the total distance of the full journey varies between 6,197 and 7,205 miles (or 9,973 and 11,595 kilometers), depending on your stopover airport.
TAP Portugal is the only airline flying the full route from Washington to São Luís.
United Airlines, Gol and LATAM operate several connecting flights, but only partly.
Star Alliance is currently the only alliance flying from Washington to São Luís.
You can fly the full route from Washington to São Luís (with 1 stopover) in Economy, Premium Economy and Business Class.
Aircraft types that fly the full route from Washington to São Luís (with 1 stopover):
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