LGA to IAD flight delays & on-time performance
Nonstop flights from LaGuardia Airport to Washington Dulles International Airport · 228 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at LGA or IAD right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from New York (LGA) to Washington (IAD) arrived on time 77% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 6.6% were cancelled, and 11% arrived an hour or more late.
- Republic Airways is the only airline reporting nonstop flights on this route.
- Departures scheduled around 6am did best (93% on time); around 2pm did worst (61%).
- Saturday was the most reliable day to fly (84% on time) and Thursday the least (73%).
- The largest source of delay minutes was late-arriving aircraft (54%).
Which airline is most on time from LGA to IAD?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Republic AirwaysRegional airline operating flights for American Eagle, Delta Connection and United Express. | 77% | 6.6% | 20 min | 10.6% | 999 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am93%313 flights
- 10am82%120 flights
- 2pm61%331 flights
- 7pm75%232 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday76%9.5% cancelled
- Tuesday76%7.4% cancelled
- Wednesday77%5.2% cancelled
- Thursday73%7.1% cancelled
- Friday76%4.6% cancelled
- Saturday84%5.2% cancelled
- Sunday75%7.2% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft54%
- Air traffic control & airport congestion28%
- Airline (crew, maintenance, cleaning, fueling)14%
- Extreme weather4%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Air traffic control & airport congestion52%
- Extreme weather48%
- Airline (crew, maintenance, cleaning, fueling)0%
- Security0%
LGA to IAD: common questions
- How often are LGA to IAD flights on time?
- 77% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from New York to Washington cancelled?
- 6.6% of scheduled flights were cancelled (66 of 999).
- How long are typical delays?
- Across all flights the average arrival delay was 20 min (early arrivals count as zero). Flights that were late arrived 82 min behind schedule on average, and 10.6% of flights were an hour or more late.
- How long is taxi time at LGA?
- Flights on this route spent 24 min taxiing from the gate to takeoff on average.
Related routes
Return trip: IAD to LGA — 74% on time
More flights from New York
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: LGA → IAD, nonstop flights by US airlines that report to the DOT. How we calculate this.