The U.S. aircraft register, updated daily
Routes and flights · the DOT's airline reports, August 2025 to July 2026

Washington Dulles International ⇄ Philipsburg IAD–SXM

Airlines flew 329 flights between Washington Dulles International IAD in Washington, DC and Philipsburg, Sint Maarten SXM in Philipsburg, SX in the twelve months to July 2026, both directions together: 42,144 passengers in 54,310 seats, 78% of them filled. 1,679 miles, about 221 minutes in the air, on 2 airlines: United Air Lines Inc. (327), VistaJet Limited (2).

329
flights, twelve months
IAD-SXM: 163 · SXM-IAD: 166
42,144
passengers
78% of seats filled
1,679
miles
about 221 minutes airborne
2
airlines
2 aircraft types

Flights by month both directions

0163146621/254/257/2512/253/266/26627/26
By month, as a table
flights
1/2524
2/2516
3/2552
4/2518
5/2520
6/2526
7/2526
8/2518
11/2510
12/2532
1/2620
2/2617
3/2657
4/2625
5/2628
6/2660
7/2662

Passengers by month

02,1524,3056,4588,6101/254/257/2512/253/266/268,6107/26
By month, as a table
passengers
1/252,589
2/251,788
3/255,477
4/251,975
5/252,351
6/253,249
7/253,342
8/252,067
11/251,258
12/253,776
1/262,432
2/262,246
3/267,132
4/263,051
5/263,609
6/267,963
7/268,610

The airlines twelve months, both directions

AirlineFlightsPassengersSeats filledService
United Air Lines Inc. UA32742,13278%scheduled passenger service
VistaJet Limited VJT21243%charter passenger service

The aircraft as the airlines report their types

AircraftFlightsSeats a flightPassengers
Boeing B737 Max 80032716642,132
Bombardier Global 6000/Global Xrs21412

IAD → SXM this direction alone · flown January 2025 to July 2026

163 flights of 166 scheduled, 21,310 passengers in 27,058 seats. United Air Lines Inc. 163.

SXM → IAD this direction alone · flown January 2025 to July 2026

166 flights of 166 scheduled, 20,834 passengers in 27,252 seats. United Air Lines Inc. 164; VistaJet Limited 2.

Source: the Bureau of Transportation Statistics' T-100 Segment table (all carriers). A flight is one departure performed on this segment; seats and passengers are the airlines' own monthly reports; "seats filled" is passengers divided by seats. The miles are the DOT's great-circle distance. Both ends: Washington Dulles International IAD and Philipsburg, Sint Maarten SXM; all routes.