Washington to Sint Maarten (IAD-SXM): nonstop flights and who flies them

United Airlines flies nonstop from Washington (IAD) to Sint Maarten (SXM) just once a week. With so few departures, each one carries the only premium seats on the route that day. United Airlines fly the route nonstop in 2LNR's schedule data; the timetable and the reverse direction are below.

Schedule last confirmed September 6, 2026. Departure times come from 2LNR's schedule data; confirm with the airline before you book.

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Nonstop flights a week

1,682 mi

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Washington to Sint Maarten flight schedule

Scheduled nonstop departures for IAD to SXM, last checked against our schedule feed on September 6, 2026. Airlines retime and cancel flights, so confirm with the airline before you book.

Scheduled nonstop departures from Washington (IAD) to Sint Maarten (SXM)
Date	Flight	Airline	Departs IAD	Arrives SXM	Duration	Aircraft
Sat, Oct 31	UA 346	United Airlines	08:41	12:50	4h 9m	7M8
Sat, Nov 7	UA 346	United Airlines	08:38	13:50	4h 12m	7M8
Sat, Nov 14	UA 346	United Airlines	08:38	13:50	4h 12m	7M8
Sat, Nov 21	UA 346	United Airlines	08:38	13:50	4h 12m	7M8
Sat, Nov 28	UA 346	United Airlines	08:38	13:50	4h 12m	7M8
Sat, Dec 5	UA 346	United Airlines	08:41	13:50	4h 9m	7M8
Sat, Dec 12	UA 346	United Airlines	08:41	13:50	4h 9m	7M8

Showing all 7 scheduled IAD to SXM departures across the next 7 days with service. Later dates are on the interactive map.

Departure and arrival times are local at their own airport, so an arrival can fall on a different local date than the departure; the duration column is the true elapsed flying time. A dash means the airline has not filed that value in the schedule data we hold. Aircraft are IATA equipment codes as filed, and can change up to departure.

See every IAD to SXM date on the interactive map

The full IAD to SXM nonstop schedule

United Airlines fly the route nonstop in 2LNR's schedule data. This page carries the full IAD to SXM nonstop schedule, who operates each departure and how often it runs; the reverse direction is linked below.

See real availability

Confirmed upgrade and award seats on each IAD to SXM departure, checked against live inventory so you know what is open before you book.

Set an alert

Premium inventory turns over fast. Watch this route and 2LNR notifies you when space appears on a date you are tracking.

Plan on the map

See IAD to SXM on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Washington to Sint Maarten nonstop

Carriers operating IAD to SXM nonstop in the current schedule. 2LNR tracks confirmed upgrade and award space on each of them.

United Airlines (UA) route map

See IAD to SXM on the interactive map →

Frequently asked questions about IAD to SXM

How far is Sint Maarten from Washington?

IAD to SXM covers about 1,682 miles nonstop. Flight times vary by aircraft and season; the schedule table on this page lists each scheduled departure with its own times.

Which airlines fly nonstop from IAD to SXM?

United Airlines is currently the only airline flying IAD to SXM nonstop. None of them is a carrier 2LNR reads inventory for, so this page carries the IAD to SXM schedule rather than a space claim.

How often does IAD to SXM operate?

The nonstop currently runs once a week, on United Airlines. Thin schedules like this change by season, and an alert will catch anything added.

What time do flights from IAD to SXM depart?

Scheduled IAD to SXM nonstops in the next 7 days with service leave between 08:38 and 08:41, local time at Washington. The schedule table on this page lists every departure by date, with its arrival time and aircraft.

Does 2LNR show upgrade or award space on IAD to SXM?

Not on this route: none of United Airlines is a carrier 2LNR reads inventory for. The page carries the full IAD to SXM nonstop schedule and who flies each departure, and the reverse direction is linked below.

See the full IAD to SXM nonstop schedule

Every scheduled departure on this route, with who flies it. On the routes 2LNR does read inventory for, upgrade and award space shows by date, the next 14 days free on every product and the full horizon on Pro.

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