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

Williamsport Regional ⇄ Washington Dulles International IPT–IAD

Airlines flew 954 flights between Williamsport Regional IPT in Williamsport, PA and Washington Dulles International IAD in Washington, DC in the twelve months to July 2026, both directions together: 3,906 passengers in 8,776 seats, 45% of them filled. 160 miles, about 64 minutes in the air, on 2 airlines: Southern Airways Express, dba Mokulele Airlines (953), Delta Air Lines Inc. (1). Planning to fly it yourself? The weather and winds along this route right now.

954
flights, twelve months
IPT-IAD: 475 · IAD-IPT: 479
3,906
passengers
45% of seats filled
160
miles
about 64 minutes airborne
2
airlines
2 aircraft types

Flights by month both directions

02754811081/254/257/2511/252/265/26607/26
By month, as a table
flights
1/25102
2/2576
3/25103
4/2596
5/25103
6/25104
7/25102
8/25108
10/25108
11/2565
12/2583
1/2694
2/2685
3/2699
4/26104
5/2688
6/2660
7/2660

Passengers by month

01412824245651/254/257/2511/252/265/262787/26
By month, as a table
passengers
1/25330
2/25275
3/25383
4/25331
5/25430
6/25390
7/25377
8/25565
10/25442
11/25346
12/25328
1/26296
2/26286
3/26368
4/26367
5/26382
6/26248
7/26278

The airlines twelve months, both directions

AirlineFlightsPassengersSeats filledService
Southern Airways Express, dba Mokulele Airlines 9X9533,84445%scheduled passenger service
Delta Air Lines Inc. DL16231%charter passenger service

The aircraft as the airlines report their types

AircraftFlightsSeats a flightPassengers
Cessna C208B/Grand Caravan95393,844
Boeing 757-200119962

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

475 flights of 570 scheduled, 1,953 passengers in 4,465 seats. Southern Airways Express, dba Mokulele Airlines 474; Delta Air Lines Inc. 1.

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

479 flights of 570 scheduled, 1,953 passengers in 4,311 seats. Southern Airways Express, dba Mokulele Airlines 479.

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: Williamsport Regional IPT and Washington Dulles International IAD; all routes.