IAD to SYR flight delays & on-time performance
Nonstop flights from Washington Dulles International Airport to Syracuse Hancock International Airport · 295 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at IAD or SYR right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Washington (IAD) to Syracuse (SYR) arrived on time 78% of the time in Aug 2025 – Jul 2026, in line with the national average.
- 1.3% were cancelled, and 7% arrived an hour or more late.
- United Airlines was the most punctual airline here (79% on time); Republic Airways was the least (76%).
- Departures scheduled around 8am did best (84% on time); around 5pm did worst (69%).
- Tuesday was the most reliable day to fly (82% on time) and Friday the least (73%).
- The largest source of delay minutes was late-arriving aircraft (48%).
Which airline is most on time from IAD to SYR?
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 |
|---|---|---|---|---|---|
| United Airlines | 79% | 0.0% | 9 min | 2.6% | 38 |
| Republic AirwaysRegional airline operating flights for American Eagle, Delta Connection and United Express. | 76% | 2.6% | 23 min | 10.5% | 39 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 8am84%19 flights
- 5pm69%27 flights
- 10pm81%31 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday77%0.0% cancelled
- Tuesday82%0.0% cancelled
- Wednesday80%0.0% cancelled
- Thursday77%7.1% cancelled
- Friday73%0.0% cancelled
- Saturday67%0.0% cancelled
- Sunday80%0.0% 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 aircraft48%
- Airline (crew, maintenance, cleaning, fueling)40%
- Air traffic control & airport congestion12%
- Extreme weather0%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Air traffic control & airport congestion100%
- Airline (crew, maintenance, cleaning, fueling)0%
- Extreme weather0%
- Security0%
IAD to SYR: common questions
- How often are IAD to SYR flights on time?
- 78% 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 Washington to Syracuse cancelled?
- 1.3% of scheduled flights were cancelled (1 of 77).
- How long are typical delays?
- Across all flights the average arrival delay was 16 min (early arrivals count as zero). Flights that were late arrived 68 min behind schedule on average, and 6.6% of flights were an hour or more late.
- How long is taxi time at IAD?
- Flights on this route spent 21 min taxiing from the gate to takeoff on average.
Related routes
Return trip: SYR to IAD — 82% on time
More flights from Washington
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: IAD → SYR, nonstop flights by US airlines that report to the DOT. How we calculate this.