Houston (IAH) to Washington (DCA) flights
United Airlines, PSA Airlines fly nonstop from George Bush Intercontinental Airport to Ronald Reagan Washington National Airport, with about 60 flights a week in July 2026. The 1,208-mile flight takes about 3h 1m gate to gate.
- Distance
- 1,208 mi · 1,944 km
- Flight time
- 3h 1m
- Airlines
- 2
- Seats filled
- 73%
Airlines flying IAH to DCA
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| United Airlines | 43 | Airbus A319, Airbus A320-100/200, Boeing 737-800 | 252,155 | 2h 59m |
| PSA Airlines | 16 | Bombardier CRJ900, Bombardier CRJ700 | 19,737 | 3h 10m |
| Republic AirlineSeasonal or ended | n/a | Embraer E175 | 24,305 | 3h 4m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
IAH to DCA flight schedule
14 flight numbers flew this route in August 2026, 8 of them almost daily. The first usually leaves at 7:00am and the last at 7:50pm. 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) |
|---|---|---|---|---|
| AA 5081American Airlines · operated by PSA Airlines | 7:00am | 11:10am | 27 | 68% |
| AA 5247American Airlines · operated by PSA Airlines | 7:03am | 11:19am | 4 | 94% |
| UA 512United Airlines | 7:45am | 11:54am | 20 | 96% |
| UA 2047United Airlines | 7:46am | 11:56am | 10 | 96% |
| UA 6170United Airlines · operated by Mesa Airlines | 9:43am | 1:59pm | 18 | 94% |
| UA 2670United Airlines | 9:47am | 1:57pm | 8 | 85% |
| AA 5055American Airlines · operated by PSA Airlines | 11:14am | 3:24pm | 19 | 67% |
| UA 654United Airlines | 11:55am | 4:04pm | 31 | 78% |
| UA 625United Airlines | 2:20pm | 6:29pm | 26 | 69% |
| AA 5026American Airlines · operated by PSA Airlines | 4:50pm | 8:59pm | 23 | 24% |
| UA 1350United Airlines | 4:55pm | 9:05pm | 21 | 71% |
| UA 2296United Airlines | 4:55pm | 9:06pm | 10 | 56% |
| UA 1627United Airlines | 6:05pm | 10:13pm | 31 | 67% |
| UA 2224United Airlines | 7:50pm | 11:59pm | 29 | 71% |
Is IAH to DCA on time?
From September 2025 to August 2026, 75% of 3,355 flights arrived within 15 minutes of schedule and 2.3% were cancelled. Flights leaving around 7am were the most punctual (93%), those around 5pm the least (57%). Most delay time was caused by air traffic control and airport congestion (41%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| United Airlines | 2,403 | 77% | 17 min | 0.7% |
| American Airlines | 952 | 72% | 26 min | 6.4% |
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 | 255 | 87% | |
| 7am to 8am | 436 | 93% | |
| 9am to 10am | 461 | 81% | |
| 10am to 11am | 93 | 73% | |
| 11am to 12pm | 205 | 74% | |
| 12pm to 1pm | 190 | 81% | |
| 2pm to 3pm | 302 | 75% | |
| 4pm to 5pm | 429 | 65% | |
| 5pm to 6pm | 237 | 57% | |
| 6pm to 7pm | 363 | 67% | |
| 7pm to 8pm | 304 | 68% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 206 | 23,191 | |
| September 2025 | 272 | 22,280 | |
| October 2025 | 290 | 25,906 | |
| November 2025 | 262 | 23,378 | |
| December 2025 | 271 | 24,025 | |
| January 2026 | 263 | 22,000 | |
| February 2026 | 254 | 21,748 | |
| March 2026 | 276 | 26,659 | |
| April 2026 | 282 | 26,174 | |
| May 2026 | 285 | 27,695 | |
| June 2026 | 273 | 26,950 | |
| July 2026 | 264 | 26,191 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.