Washington (DCA) to Houston (IAH) flights
United Airlines, PSA Airlines fly nonstop from Ronald Reagan Washington National Airport to George Bush Intercontinental Airport, with about 61 flights a week in July 2026. The 1,208-mile flight takes about 3h 22m gate to gate.
- Distance
- 1,208 mi · 1,944 km
- Flight time
- 3h 22m
- Airlines
- 2
- Seats filled
- 70%
Airlines flying DCA to IAH
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| United Airlines | 44 | Airbus A319, Boeing 737-700 / MAX 7, Airbus A320-100/200 | 242,684 | 3h 19m |
| PSA Airlines | 17 | Bombardier CRJ900, Bombardier CRJ700 | 16,324 | 3h 27m |
| Republic AirlineSeasonal or ended | n/a | Embraer E175 | 21,307 | 3h 31m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
DCA to IAH flight schedule
12 flight numbers flew this route in August 2026, 8 of them almost daily. The first usually leaves at 6:00am and the last at 7:51pm. Times are local and can change; check with the airline before you book.
| Flight | Departs | Arrives | Days flown in August 2026 | On time (12 months) |
|---|---|---|---|---|
| UA 1450United Airlines | 6:00am | 8:19am | 31 | 93% |
| AA 5055American Airlines · operated by PSA Airlines | 8:20am | 10:44am | 18 | 82% |
| UA 697United Airlines | 8:20am | 10:38am | 31 | 91% |
| UA 2190United Airlines | 10:58am | 1:18pm | 30 | 86% |
| UA 382United Airlines | 12:57pm | 3:17pm | 30 | 89% |
| AA 5026American Airlines · operated by PSA Airlines | 1:48pm | 4:19pm | 23 | 59% |
| UA 4055United Airlines · operated by Mesa Airlines | 2:40pm | 5:17pm | 18 | 88% |
| UA 1381United Airlines | 2:55pm | 5:14pm | 8 | 77% |
| AA 5557American Airlines · operated by PSA Airlines | 4:18pm | 6:49pm | 4 | n/a |
| UA 1785United Airlines | 4:38pm | 7:05pm | 29 | 65% |
| UA 1678United Airlines | 7:29pm | 9:48pm | 26 | 71% |
| AA 5317American Airlines · operated by PSA Airlines | 7:51pm | 10:16pm | 23 | 59% |
Is DCA to IAH on time?
From September 2025 to August 2026, 80% of 3,351 flights arrived within 15 minutes of schedule and 2.3% were cancelled. Flights leaving around 12pm were the most punctual (90%), those around 4pm the least (64%). Most delay time was caused by late-arriving aircraft (45%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| United Airlines | 2,402 | 84% | 15 min | 0.8% |
| American Airlines | 949 | 72% | 21 min | 6.1% |
Airlines as sold: flights operated by regional partners count under the airline on the ticket. Average delay is across all completed flights, early arrivals counted as zero.
On-time arrivals by departure time
| Scheduled departure | Flights | On time, relative | On time |
|---|---|---|---|
| 6am to 7am | 558 | 89% | |
| 8am to 9am | 390 | 89% | |
| 10am to 11am | 99 | 81% | |
| 11am to 12pm | 263 | 88% | |
| 12pm to 1pm | 366 | 90% | |
| 1pm to 2pm | 269 | 67% | |
| 2pm to 3pm | 364 | 78% | |
| 4pm to 5pm | 338 | 64% | |
| 7pm to 8pm | 508 | 73% | |
| 8pm to 9pm | 127 | 73% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 206 | 20,585 | |
| September 2025 | 273 | 20,745 | |
| October 2025 | 291 | 25,523 | |
| November 2025 | 263 | 22,900 | |
| December 2025 | 272 | 27,219 | |
| January 2026 | 264 | 18,620 | |
| February 2026 | 252 | 20,373 | |
| March 2026 | 277 | 26,338 | |
| April 2026 | 283 | 22,494 | |
| May 2026 | 285 | 24,823 | |
| June 2026 | 265 | 25,480 | |
| July 2026 | 271 | 26,268 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.