Washington Dulles International ⇄ London IAD–LHR
Airlines flew 3,886 flights between Washington Dulles International IAD in Washington, DC and London, United Kingdom LHR in London, GB in the twelve months to July 2026, both directions together: 800,971 passengers in 1,038,457 seats, 77% of them filled, and 45,527,041 pounds of freight. 3,677 miles, about 149 minutes in the air, on 3 airlines: British Airways Plc (1,785), United Air Lines Inc. (1,431), Virgin Atlantic Airways (670).
Flights by month both directions
By month, as a table
| flights | |
|---|---|
| 1/25 | 301 |
| 2/25 | 250 |
| 3/25 | 292 |
| 4/25 | 318 |
| 5/25 | 365 |
| 6/25 | 349 |
| 7/25 | 349 |
| 8/25 | 364 |
| 9/25 | 358 |
| 10/25 | 335 |
| 11/25 | 295 |
| 12/25 | 294 |
| 1/26 | 281 |
| 2/26 | 249 |
| 3/26 | 301 |
| 4/26 | 346 |
| 5/26 | 364 |
| 6/26 | 344 |
| 7/26 | 355 |
Passengers by month
By month, as a table
| passengers | |
|---|---|
| 1/25 | 54,003 |
| 2/25 | 37,824 |
| 3/25 | 56,250 |
| 4/25 | 69,690 |
| 5/25 | 80,800 |
| 6/25 | 88,001 |
| 7/25 | 90,088 |
| 8/25 | 85,305 |
| 9/25 | 74,079 |
| 10/25 | 71,423 |
| 11/25 | 55,885 |
| 12/25 | 63,000 |
| 1/26 | 49,730 |
| 2/26 | 39,292 |
| 3/26 | 60,623 |
| 4/26 | 67,007 |
| 5/26 | 73,035 |
| 6/26 | 78,278 |
| 7/26 | 83,314 |
The airlines twelve months, both directions
| Airline | Flights | Passengers | Seats filled | Service |
|---|---|---|---|---|
| British Airways Plc BA | 1,785 | 383,725 | 79% | scheduled passenger service |
| United Air Lines Inc. UA | 1,431 | 285,270 | 76% | scheduled passenger service |
| Virgin Atlantic Airways VS | 670 | 131,976 | 75% | scheduled passenger service |
The aircraft as the airlines report their types
| Aircraft | Flights | Seats a flight | Passengers |
|---|---|---|---|
| Boeing 777-200ER/200LR/233LR | 1,828 | 263 | 386,103 |
| B787-900 Dreamliner | 504 | 238 | 89,626 |
| Boeing 777-300/300ER/333ER | 245 | 255 | 52,700 |
| Airbus Industrie A330-300/333 | 243 | 264 | 49,987 |
| Boeing 767-400/ER | 223 | 231 | 34,515 |
| Airbus Industrie A380-800 | 197 | 469 | 59,964 |
| Airbus 350-1000 | 179 | 331 | 44,622 |
| Airbus A330-900neo | 157 | 266 | 33,267 |
| Boeing 767-300/300ER | 140 | 202 | 19,954 |
| B787-800 Dreamliner | 104 | 207 | 17,106 |
| Boeing 787-10 Dreamliner | 64 | 256 | 12,915 |
| Boeing 757-200 | 2 | 176 | 212 |
IAD → LHR this direction alone · flown January 2025 to July 2026
1,944 flights of 729 scheduled, 402,855 passengers in 519,738 seats, 12,032,044 pounds of freight, 1,040 pounds of mail. British Airways Plc 893; United Air Lines Inc. 716; Virgin Atlantic Airways 335.
LHR → IAD this direction alone · flown January 2025 to July 2026
1,942 flights of 729 scheduled, 398,116 passengers in 518,719 seats, 33,494,997 pounds of freight, 75,180 pounds of mail. British Airways Plc 892; United Air Lines Inc. 715; Virgin Atlantic Airways 335.
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 London, United Kingdom LHR; all routes.