Washington to Sint Maarten flights: who flies IAD-SXM

Washington to Sint Maarten flight schedule

Scheduled nonstop departures for IAD to SXM starting October 21, 2026, last checked against our schedule feed on October 18, 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	Boeing 737 MAX 8
Sat, Nov 7	UA 346	United Airlines	08:38	13:50	4h 12m	Boeing 737 MAX 8
Sat, Nov 14	UA 346	United Airlines	08:38	13:50	4h 12m	Boeing 737 MAX 8
Sat, Nov 21	UA 346	United Airlines	08:38	13:50	4h 12m	Boeing 737 MAX 8
Sat, Nov 28	UA 346	United Airlines	08:38	13:50	4h 12m	Boeing 737 MAX 8
Sat, Dec 5	UA 346	United Airlines	08:41	13:50	4h 9m	Boeing 737 MAX 8
Sat, Dec 12	UA 346	United Airlines	08:41	13:50	4h 9m	Boeing 737 MAX 8

Showing all 7 scheduled IAD to SXM departures across 7 days with service, starting October 21, 2026. 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 hasn't filed that value in the schedule data we hold. Aircraft are the equipment the airline filed, named where the code pins down one type and shown as the family or the bare code where it doesn't. Swaps can happen up to departure.

See every IAD to SXM date on the interactive map

Aircraft on the Washington to Sint Maarten nonstop

United Airlines flies the Boeing 737 MAX 8 on every departure in the schedule table on this page. Each linked aircraft page shows where that airline schedules it. Airlines can swap aircraft up to departure.

The full IAD to SXM nonstop schedule

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 the schedule

Who operates each IAD to SXM nonstop and how often it runs, from 2LNR's schedule data.

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.

United Airlines (UA) route map
The aircraft UA flies

See IAD to SXM on the interactive map →

Frequently asked questions about IAD to SXM

How long is the flight from Washington (IAD) to Sint Maarten (SXM)?

Scheduled flight times from Washington (IAD) to Sint Maarten (SXM) run from 4h 9m to 4h 12m across the departures in the schedule table on this page. The nonstop covers about 1,682 miles, and airlines adjust scheduled times by season, so confirm with the airline before you book.

Which airlines fly nonstop from IAD to SXM?

United Airlines is currently the only airline flying IAD to SXM nonstop. 2LNR doesn't show award or upgrade space for it on IAD to SXM, so this page carries the schedule rather than a space claim.

How often does IAD to SXM operate?

The IAD to SXM nonstop currently runs once a week, on United Airlines. Thin schedules like this change by season, and on Pro 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.

Which flights operate IAD to SXM nonstop?

United Airlines flies UA 346 nonstop from Washington (IAD) to Sint Maarten (SXM), the only flight number in the schedule table on this page. The table lists each date with its departure and arrival times and aircraft.

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

Not on this route: 2LNR doesn't show award or upgrade space for United Airlines on IAD to SXM. The page carries the full IAD to SXM nonstop schedule and who flies each departure, and the reverse direction is linked below.