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

Washington Dulles International ⇄ Sacramento International IAD–SMF

Airlines flew 721 flights between Washington Dulles International IAD in Washington, DC and Sacramento International SMF in Sacramento, CA in the twelve months to July 2026, both directions together: 109,025 passengers in 127,678 seats, 85% of them filled, and 279 pounds of freight. 2,357 miles, about 314 minutes in the air, on 3 airlines: United Air Lines Inc. (718), Delta Air Lines Inc. (2), NEW PACIFIC AIRLINES (1). Planning to fly it yourself? The weather and winds along this route right now.

721
flights, twelve months
IAD-SMF: 362 · SMF-IAD: 359
109,025
passengers
85% of seats filled
2,357
miles
about 314 minutes airborne
3
airlines
5 aircraft types

Flights by month both directions

0163247631/254/257/2510/251/264/26617/26
By month, as a table
flights
1/2560
2/2556
3/2562
4/2560
5/2562
6/2558
7/2562
8/2563
9/2560
10/2562
11/2560
12/2562
1/2659
2/2657
3/2662
4/2660
5/2659
6/2656
7/2661

Passengers by month

02,5845,1697,75410,3381/254/257/2510/251/264/2610,3387/26
By month, as a table
passengers
1/257,608
2/257,244
3/258,737
4/259,537
5/259,593
6/259,079
7/2510,166
8/259,414
9/258,747
10/259,247
11/258,022
12/259,545
1/267,811
2/267,722
3/269,600
4/269,390
5/269,574
6/269,615
7/2610,338

The airlines twelve months, both directions

AirlineFlightsPassengersSeats filledService
United Air Lines Inc. UA718108,85985%scheduled passenger service
Delta Air Lines Inc. DL211076%charter passenger service
NEW PACIFIC AIRLINES 7H15672%charter passenger service

The aircraft as the airlines report their types

AircraftFlightsSeats a flightPassengers
Boeing B737 Max 90057717988,579
Boeing 737-800701669,357
Boeing 737-900ER591799,349
Boeing B737 Max 800121661,574
Boeing 757-200374166

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

362 flights of 365 scheduled, 52,744 passengers in 64,025 seats, 279 pounds of freight, 14 pounds of mail. United Air Lines Inc. 360; Delta Air Lines Inc. 2.

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

359 flights of 365 scheduled, 56,281 passengers in 63,653 seats. United Air Lines Inc. 358; NEW PACIFIC AIRLINES 1.

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 Sacramento International SMF; all routes.