Washington Dulles International ⇄ San Antonio International IAD–SAT
Airlines flew 1,364 flights between Washington Dulles International IAD in Washington, DC and San Antonio International SAT in San Antonio, TX in the twelve months to July 2026, both directions together: 172,189 passengers in 209,242 seats, 82% of them filled, and 18,039 pounds of freight. 1,362 miles, about 188 minutes in the air, on 5 airlines: United Air Lines Inc. (1,271), Mesa Airlines Inc. (88), Delta Air Lines Inc. (3), Jet Aviation Flight Services, Inc. (1) and 1 more. Planning to fly it yourself? The weather and winds along this route right now.
Flights by month both directions
By month, as a table
| flights | |
|---|---|
| 1/25 | 123 |
| 2/25 | 112 |
| 3/25 | 129 |
| 4/25 | 173 |
| 5/25 | 152 |
| 6/25 | 103 |
| 7/25 | 122 |
| 8/25 | 108 |
| 9/25 | 103 |
| 10/25 | 110 |
| 11/25 | 120 |
| 12/25 | 126 |
| 1/26 | 101 |
| 2/26 | 103 |
| 3/26 | 124 |
| 4/26 | 117 |
| 5/26 | 109 |
| 6/26 | 120 |
| 7/26 | 123 |
Passengers by month
By month, as a table
| passengers | |
|---|---|
| 1/25 | 14,036 |
| 2/25 | 13,306 |
| 3/25 | 15,142 |
| 4/25 | 18,536 |
| 5/25 | 17,742 |
| 6/25 | 14,992 |
| 7/25 | 15,880 |
| 8/25 | 12,567 |
| 9/25 | 13,055 |
| 10/25 | 14,022 |
| 11/25 | 15,701 |
| 12/25 | 16,609 |
| 1/26 | 11,902 |
| 2/26 | 11,884 |
| 3/26 | 15,920 |
| 4/26 | 14,350 |
| 5/26 | 14,918 |
| 6/26 | 15,877 |
| 7/26 | 15,384 |
The airlines twelve months, both directions
| Airline | Flights | Passengers | Seats filled | Service |
|---|---|---|---|---|
| United Air Lines Inc. UA | 1,271 | 166,213 | 82% | scheduled passenger service |
| Mesa Airlines Inc. YV | 88 | 5,721 | 89% | scheduled passenger service |
| Delta Air Lines Inc. DL | 3 | 129 | 60% | charter passenger service |
| Jet Aviation Flight Services, Inc. 27Q | 1 | 4 | 40% | charter passenger service |
| American Airlines Inc. AA | 1 | 122 | 95% | scheduled passenger service |
The aircraft as the airlines report their types
| Aircraft | Flights | Seats a flight | Passengers |
|---|---|---|---|
| Boeing 737-900ER | 363 | 179 | 50,093 |
| Boeing 737-700/700LR/Max 7 | 331 | 126 | 37,260 |
| Boeing B737 Max 900 | 283 | 179 | 40,295 |
| Boeing B737 Max 800 | 125 | 166 | 18,216 |
| Embraer ERJ-175 | 88 | 73 | 5,721 |
| Airbus Industrie A319 | 88 | 126 | 9,506 |
| Boeing 737-800 | 68 | 166 | 9,324 |
| Airbus Industrie A320-100/200 | 14 | 150 | 1,641 |
| Boeing 757-200 | 3 | 72 | 129 |
| Dassault Falcon 2000EX/2000lxs | 1 | 10 | 4 |
IAD → SAT this direction alone · flown January 2025 to July 2026
685 flights of 685 scheduled, 87,304 passengers in 104,634 seats, 13,740 pounds of freight. United Air Lines Inc. 637; Mesa Airlines Inc. 44; Delta Air Lines Inc. 3; Jet Aviation Flight Services, Inc. 1.
SAT → IAD this direction alone · flown January 2025 to July 2026
679 flights of 686 scheduled, 84,885 passengers in 104,608 seats, 4,299 pounds of freight. United Air Lines Inc. 634; Mesa Airlines Inc. 44; American Airlines Inc. 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 San Antonio International SAT; all routes.