Flight Reliability
DL 3549 · Delta Air Lines
RDM → Salt Lake City (RDM–SLC)93% of its flights flew this route. The rest (DTW–MKE, MKE–DTW) are included in these numbers.
98
Nerd Approved
WanderNerd Reliability Score
- 92%
- Arrive within 15 minutes
- 4 min early
- Average arrival delay
- 0.5%
- Cancelled
- 10 min early
- Median arrival delay
Based on 209 historical flights. Data through May 2026.
What the data says
Mondays have been rough.
DL 3549 arrived on time 100% of the time on Tuesdays and just 84% on Mondays. That gap is worth planning around.
Better than the Delta Air Lines network average.
DL 3549 arrived on time 92% of the time, versus 81% across the Delta Air Lines network.
The breakdown
- Mon84%(32 flights)
- Tue100%(30 flights)
- Wed93%(27 flights)
- Thu93%(28 flights)
- Fri93%(30 flights)
- Sat89%(27 flights)
- Sun94%(34 flights)
- 3–6 AM93%(194 flights)
- 6–9 AM—(5 flights)
- 9 AM–12 PM—(5 flights)
- 3–6 PM—(2 flights)
- 6–9 PM—(2 flights)
100%
Apr
Jun 93% → Apr 100% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 93% | 27 |
| July 2025 | 94% | 31 |
| August 2025 | 97% | 31 |
| September 2025 | 87% | 30 |
| October 2025 | 97% | 31 |
| November 2025 | 86% | 29 |
| December 2025 | 90% | 19 |
| April 2026 | 100% | 10 |
- Departures on time
- 93%
- Diverted
- 0%
- Flights flown
- 208
- Months covered
- 8
Same route, other flights
Keep nerding
Based on 209 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.