Washington Dulles International ⇄ George Bush Intcntl/Houston IAD–IAH
Airlines flew 3,785 flights between Washington Dulles International IAD in Washington, DC and George Bush Intcntl/Houston IAH in Houston, TX in the twelve months to July 2026, both directions together: 521,940 passengers in 631,419 seats, 83% of them filled, and 1,252,573 pounds of freight. 1,190 miles, about 166 minutes in the air, on 6 airlines: United Air Lines Inc. (3,759), CommuteAir LLC dba CommuteAir (13), Mesa Airlines Inc. (8), Delta Air Lines Inc. (3) and 2 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 | 259 |
| 2/25 | 237 |
| 3/25 | 317 |
| 4/25 | 371 |
| 5/25 | 382 |
| 6/25 | 354 |
| 7/25 | 318 |
| 8/25 | 353 |
| 9/25 | 388 |
| 10/25 | 360 |
| 11/25 | 300 |
| 12/25 | 283 |
| 1/26 | 256 |
| 2/26 | 228 |
| 3/26 | 294 |
| 4/26 | 295 |
| 5/26 | 333 |
| 6/26 | 366 |
| 7/26 | 329 |
Passengers by month
By month, as a table
| passengers | |
|---|---|
| 1/25 | 36,890 |
| 2/25 | 32,133 |
| 3/25 | 42,912 |
| 4/25 | 48,108 |
| 5/25 | 54,171 |
| 6/25 | 51,108 |
| 7/25 | 44,322 |
| 8/25 | 48,142 |
| 9/25 | 48,292 |
| 10/25 | 46,331 |
| 11/25 | 40,851 |
| 12/25 | 42,059 |
| 1/26 | 35,089 |
| 2/26 | 31,288 |
| 3/26 | 39,465 |
| 4/26 | 41,309 |
| 5/26 | 47,234 |
| 6/26 | 53,500 |
| 7/26 | 48,380 |
The airlines twelve months, both directions
| Airline | Flights | Passengers | Seats filled | Service |
|---|---|---|---|---|
| United Air Lines Inc. UA | 3,759 | 521,168 | 83% | scheduled passenger service |
| CommuteAir LLC dba CommuteAir C5 | 13 | 225 | 35% | scheduled passenger service |
| Mesa Airlines Inc. YV | 8 | 250 | 43% | scheduled passenger service |
| Delta Air Lines Inc. DL | 3 | 293 | 79% | scheduled passenger service |
| National Air Cargo Group Inc d/ba National Airlines N8 | 1 | 0 | 0% | charter passenger service |
| Jet Aviation Flight Services, Inc. 27Q | 1 | 4 | 25% | charter passenger service |
The aircraft as the airlines report their types
| Aircraft | Flights | Seats a flight | Passengers |
|---|---|---|---|
| Boeing 737-900ER | 1,567 | 179 | 233,415 |
| Boeing 737-800 | 552 | 166 | 76,863 |
| Boeing B737 Max 900 | 546 | 179 | 76,121 |
| Airbus Industrie A320-100/200 | 291 | 150 | 35,774 |
| Boeing B737 Max 800 | 271 | 166 | 37,161 |
| Airbus Industrie A319 | 267 | 126 | 29,185 |
| Boeing 737-700/700LR/Max 7 | 204 | 126 | 22,983 |
| Boeing 757-200 | 35 | 176 | 5,754 |
| Airbus Industrie A321-200n | 13 | 200 | 1,709 |
| Embraer-145 | 13 | 50 | 225 |
| Embraer ERJ-175 | 8 | 73 | 250 |
| Boeing 767-300/300ER | 6 | 203 | 985 |
| Boeing 737-900 | 3 | 179 | 483 |
| B787-900 Dreamliner | 2 | 257 | 262 |
| Boeing 777-200ER/200LR/233LR | 2 | 320 | 473 |
| A220-300 BD-500-1A11 | 2 | 130 | 231 |
| Airbus Industrie A330-200 | 1 | 290 | 0 |
| A200-100 BD-500-1A10 | 1 | 109 | 62 |
| Gulfstream Aerospace G-III/G-IV | 1 | 16 | 4 |
IAD → IAH this direction alone · flown January 2025 to July 2026
1,887 flights of 1,882 scheduled, 264,129 passengers in 315,256 seats, 634,151 pounds of freight, 8,039 pounds of mail. United Air Lines Inc. 1,875; CommuteAir LLC dba CommuteAir 5; Mesa Airlines Inc. 5; Delta Air Lines Inc. 1; National Air Cargo Group Inc d/ba National Airlines 1.
IAH → IAD this direction alone · flown January 2025 to July 2026
1,898 flights of 1,880 scheduled, 257,811 passengers in 316,163 seats, 618,422 pounds of freight, 61,737 pounds of mail. United Air Lines Inc. 1,884; CommuteAir LLC dba CommuteAir 8; Mesa Airlines Inc. 3; Delta Air Lines Inc. 2; Jet Aviation Flight Services, 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 George Bush Intcntl/Houston IAH; all routes.