Best Time to Fly RSW to IAD: On-Time Stats by Hour & Airline
Southwest Florida International → Washington Dulles International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 89.4% of Fort Myers (RSW) to Washington (IAD) flights arrived on time (467 scheduled flights). That is 11.8 points above the national average of 77.6%.
United Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Tuesday was the most reliable day (92% on time) and January the worst month (83%).
The cancellation rate was 1.1% (US average 1.8%).
RSW to IAD on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| United Airlines | 89.4% | 73 min | 1.1% | 467 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly RSW to IAD
On-time arrival % by scheduled departure hour (local time), 982 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 8am–9am | Limited data | 20 | |
| 9am–10am | 93.1% | 1.0% | 102 |
| 11am–12pm | 89.0% | 0.0% | 73 |
| 12pm–1pm | 87.8% | 0.0% | 107 |
| 1pm–2pm | 87.8% | 1.5% | 392 |
| 2pm–3pm | Limited data | 19 | |
| 4pm–5pm | Limited data | 19 | |
| 6pm–7pm | 88.3% | 0.8% | 250 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on RSW to IAD
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | Limited data | 19 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 83.3% | -5.2 pts | 0.0% | 60 |
| Summer peak (Jun 15 - Aug 15) | 85.4% | -3.2 pts | 0.0% | 124 |
| All other days | 88.6% | — | 1.2% | 779 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).