Dulles (IAD) to New York (LGA) flights
Republic Airline, Mesa Airlines, Delta Air Lines fly nonstop from Washington Dulles International Airport to LaGuardia Airport, with about 27 flights a week in July 2026. The 228-mile flight takes about 1h 26m gate to gate.
- Distance
- 228 mi · 367 km
- Flight time
- 1h 26m
- Airlines
- 3
- Seats filled
- 84%
Airlines flying IAD to LGA
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Republic Airline | 13 | Embraer E175, Embraer E170 | 60,117 | 1h 27m |
| Mesa Airlines | 12 | Embraer E175 | 25,792 | 1h 23m |
| Delta Air Lines | 1 | Airbus A321, Airbus A220-300 | 1,851 | 1h 35m |
| United AirlinesSeasonal or ended | n/a | Boeing 737-800, Boeing 737 MAX 8, Boeing 737-900ER | 1,767 | 1h 25m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
IAD to LGA flight schedule
8 flight numbers flew this route in August 2026, 4 of them almost daily. The first usually leaves at 8:18am and the last at 10:09pm. 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 3999United Airlines · operated by Mesa Airlines | 8:18am | 9:39am | 21 | 76% |
| UA 6116United Airlines · operated by Mesa Airlines | 8:19am | 9:48am | 10 | 82% |
| UA 3698United Airlines · operated by Republic Airline | 12:40pm | 2:10pm | 10 | 68% |
| UA 4004United Airlines · operated by Mesa Airlines | 12:40pm | 2:09pm | 21 | 70% |
| UA 4005United Airlines · operated by Mesa Airlines | 5:15pm | 6:45pm | 21 | 75% |
| UA 4077United Airlines · operated by Mesa Airlines | 5:15pm | 6:42pm | 10 | 68% |
| UA 3682United Airlines · operated by Republic Airline | 10:05pm | 11:30pm | 9 | 59% |
| UA 4012United Airlines · operated by Mesa Airlines | 10:09pm | 11:30pm | 21 | 70% |
Is IAD to LGA on time?
From September 2025 to August 2026, 73% of 1,450 flights arrived within 15 minutes of schedule and 6.9% were cancelled. Flights leaving around 8am were the most punctual (81%), those around 12pm the least (67%). Most delay time was caused by air traffic control and airport congestion (57%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| United Airlines | 1,450 | 73% | 21 min | 6.9% |
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 |
|---|---|---|---|
| 8am to 9am | 363 | 81% | |
| 12pm to 1pm | 362 | 67% | |
| 5pm to 6pm | 365 | 71% | |
| 10pm to 11pm | 360 | 74% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 121 | 8,219 | |
| September 2025 | 121 | 8,301 | |
| October 2025 | 126 | 8,300 | |
| November 2025 | 106 | 6,529 | |
| December 2025 | 127 | 8,770 | |
| January 2026 | 116 | 7,156 | |
| February 2026 | 103 | 6,407 | |
| March 2026 | 112 | 7,131 | |
| April 2026 | 116 | 7,101 | |
| May 2026 | 122 | 7,659 | |
| June 2026 | 117 | 7,546 | |
| July 2026 | 122 | 8,354 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.