FLL to IAD flight delays & on-time performance
Nonstop flights from Fort Lauderdale Hollywood International Airport to Washington Dulles International Airport · 901 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at FLL or IAD right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Fort Lauderdale (FLL) to Washington (IAD) arrived on time 84% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 1% were cancelled, and 6% arrived an hour or more late.
- United Airlines was the most punctual airline here (86% on time); Frontier Airlines was the least (54%).
- Departures scheduled around 11am did best (94% on time); around 5pm did worst (61%).
- Tuesday was the most reliable day to fly (93% on time) and Sunday the least (72%).
- The largest source of delay minutes was late-arriving aircraft (34%).
Which airline is most on time from FLL 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 |
|---|---|---|---|---|---|
| United Airlines | 86% | 0.6% | 10 min | 3.8% | 710 |
| Frontier Airlines | 54% | 5.6% | 50 min | 23.9% | 72 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 8am90%150 flights
- 9am87%54 flights
- 11am94%36 flights
- 12pm86%327 flights
- 5pm61%111 flights
- 6pm84%99 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday84%2.5% cancelled
- Tuesday93%0.0% cancelled
- Wednesday84%0.0% cancelled
- Thursday90%0.0% cancelled
- Friday81%0.8% cancelled
- Saturday83%0.8% cancelled
- Sunday72%2.5% 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 aircraft34%
- Air traffic control & airport congestion30%
- Airline (crew, maintenance, cleaning, fueling)22%
- Extreme weather14%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather75%
- Airline (crew, maintenance, cleaning, fueling)25%
- Air traffic control & airport congestion0%
- Security0%
FLL to IAD: common questions
- How often are FLL to IAD flights on time?
- 84% 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 Fort Lauderdale to Washington cancelled?
- 1.0% of scheduled flights were cancelled (8 of 782).
- How long are typical delays?
- Across all flights the average arrival delay was 14 min (early arrivals count as zero). Flights that were late arrived 81 min behind schedule on average, and 5.6% of flights were an hour or more late.
- How long is taxi time at FLL?
- Flights on this route spent 21 min taxiing from the gate to takeoff on average.
Related routes
Return trip: IAD to FLL — 81% on time
More flights from Fort Lauderdale
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: FLL → IAD, nonstop flights by US airlines that report to the DOT. How we calculate this.