Washington Dulles International ⇄ Luis Munoz Marin International IAD–SJU
Airlines flew 1,415 flights between Washington Dulles International IAD in Washington, DC and Luis Munoz Marin International SJU in San Juan, PR in the twelve months to July 2026, both directions together: 227,072 passengers in 256,624 seats, 88% of them filled, and 186,074 pounds of freight. 1,572 miles, about 203 minutes in the air, on 4 airlines: United Air Lines Inc. (1,265), Frontier Airlines Inc. (148), ABS JETS A.S (1), JetBlue Airways (1). 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 | 122 |
| 2/25 | 112 |
| 3/25 | 122 |
| 4/25 | 77 |
| 5/25 | 78 |
| 6/25 | 100 |
| 7/25 | 104 |
| 8/25 | 100 |
| 9/25 | 27 |
| 10/25 | 87 |
| 11/25 | 147 |
| 12/25 | 155 |
| 1/26 | 143 |
| 2/26 | 127 |
| 3/26 | 134 |
| 4/26 | 125 |
| 5/26 | 124 |
| 6/26 | 120 |
| 7/26 | 126 |
Passengers by month
By month, as a table
| passengers | |
|---|---|
| 1/25 | 19,622 |
| 2/25 | 17,764 |
| 3/25 | 19,316 |
| 4/25 | 12,145 |
| 5/25 | 11,713 |
| 6/25 | 16,645 |
| 7/25 | 17,576 |
| 8/25 | 16,366 |
| 9/25 | 4,339 |
| 10/25 | 12,628 |
| 11/25 | 22,500 |
| 12/25 | 24,701 |
| 1/26 | 23,022 |
| 2/26 | 21,273 |
| 3/26 | 22,380 |
| 4/26 | 19,410 |
| 5/26 | 20,216 |
| 6/26 | 19,541 |
| 7/26 | 20,696 |
The airlines twelve months, both directions
| Airline | Flights | Passengers | Seats filled | Service |
|---|---|---|---|---|
| United Air Lines Inc. UA | 1,265 | 203,296 | 90% | scheduled passenger service |
| Frontier Airlines Inc. F9 | 148 | 23,645 | 75% | scheduled passenger service |
| ABS JETS A.S 2AQ | 1 | 1 | 6% | charter passenger service |
| JetBlue Airways B6 | 1 | 130 | 80% | scheduled passenger service |
The aircraft as the airlines report their types
| Aircraft | Flights | Seats a flight | Passengers |
|---|---|---|---|
| Boeing B737 Max 900 | 994 | 179 | 161,018 |
| Boeing 737-900ER | 135 | 179 | 21,477 |
| Boeing B737 Max 800 | 130 | 166 | 20,166 |
| Airbus Industrie A321-200n | 74 | 233 | 13,612 |
| Airbus Industrie A320-200n | 64 | 186 | 8,114 |
| Airbus Industrie A321Neoxlr | 12 | 230 | 2,094 |
| Airbus Industrie A320-100/200 | 3 | 178 | 416 |
| Boeing 767-400/ER | 2 | 231 | 174 |
| Gulfstream G650 | 1 | 17 | 1 |
IAD → SJU this direction alone · flown January 2025 to July 2026
705 flights of 706 scheduled, 112,140 passengers in 127,096 seats, 163,599 pounds of freight, 392,481 pounds of mail. United Air Lines Inc. 631; Frontier Airlines Inc. 74.
SJU → IAD this direction alone · flown January 2025 to July 2026
710 flights of 705 scheduled, 114,932 passengers in 129,528 seats, 22,475 pounds of freight. United Air Lines Inc. 634; Frontier Airlines Inc. 74; ABS JETS A.S 1; JetBlue Airways 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 Luis Munoz Marin International SJU; all routes.