Flight Reliability
DL 538 · Delta Air Lines
Tampa → Los Angeles (TPA–LAX)
88
Pretty Reliable
WanderNerd Reliability Score
- 87%
- Arrive within 15 minutes
- 2 min early
- Average arrival delay
- 1.6%
- Cancelled
- 9 min early
- Median arrival delay
Based on 365 historical flights. Data through May 2026.
What the data says
Skip Tuesday if you can.
DL 538 arrived on time 92% of the time on Sundays. On Tuesdays: 83%.
A bit ahead of the TPA–LAX route.
DL 538 arrived on time 87% of the time, versus 84% across the TPA–LAX route.
A bit ahead of the Delta Air Lines network.
DL 538 arrived on time 87% of the time, versus 81% across the Delta Air Lines network.
Ticking up lately.
DL 538 arrived on time 92% of the time over the last three months in the data, compared with 89% in the three months before that.
The breakdown
- Mon88%(51 flights)
- Tue83%(52 flights)
- Wed86%(49 flights)
- Thu87%(52 flights)
- Fri86%(51 flights)
- Sat90%(52 flights)
- Sun92%(51 flights)
97%
May
Jun 87% → May 97% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 87% | 30 |
| July 2025 | 68% | 31 |
| August 2025 | 90% | 30 |
| September 2025 | 90% | 30 |
| October 2025 | 90% | 31 |
| November 2025 | 83% | 30 |
| December 2025 | 76% | 29 |
| January 2026 | 94% | 31 |
| February 2026 | 96% | 27 |
| March 2026 | 93% | 30 |
| April 2026 | 87% | 30 |
| May 2026 | 97% | 29 |
- Departures on time
- 89%
- Diverted
- 0.3%
- Flights flown
- 358
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 365 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.