Salt Lake City (SLC) to Washington (DCA): On-Time Performance
Data through May 2026
Salt Lake City (SLC) to Washington (DCA) effectively runs on two schedules. In August 2024, 94% of arrivals were on time; in February 2025 that fell to 64% — a 29-point seasonal swing. Across the full period the route averages 82% on-time against a national 78%.
- On-time
- 82%
- arrived <15 min late
- Avg delay
- 9 min
- completed flights
- Cancelled
- 1.2%
- Flights/day
- 1.0
- last 12 months
- Duration
- 4h 8m
- scheduled
- Distance
- 1,851 mi
Monthly on-time trend
Best time to fly from SLC to DCA
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 82% | 12 min |
| Tuesday | 82% | 6 min |
| Wednesday | 84% | 8 min |
| Thursday | 77% | 11 min |
| Friday | 77% | 11 min |
| Saturday | 86% | 8 min |
| Sundaybest | 88% | 4 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft9%
- Airline operations39%
- National airspace system50%
- Weather3%
Frequently asked questions
- How often are flights from SLC to DCA delayed?
- 18% of SLC–DCA flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 9 minutes.
- How long is the flight from SLC to DCA?
- The scheduled SLC–DCA flight time averages 4h 8m over 1,851 miles. Actual arrival times vary — flights on this route land 15+ minutes late 18% of the time.
- How often are SLC to DCA flights cancelled?
- 1.2% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from SLC to DCA?
- February 2025 was the roughest month in this dataset, with only 64% of arrivals on time. The best was August 2024 at 94%. If your dates are flexible, that 29-point gap is worth planning around.
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Based on 730 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.