Route
SJU → DTW
Luis Munoz Marin International Airport Detroit Metropolitan Wayne County Airport
1,930 miles
Return route DTW → SJU →
How punctual is this route?
- On-time arrivals
- 84.5%
- Less than 15 minutes late
- Cancelled
- 1.8%
- Of scheduled flights
- Average delay when late
- 53 min
- Flights arriving 15+ minutes late
- Flights tracked
- 331
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 75%
- Air traffic control & airport 15%
- Airline (crew, maintenance, cleaning) 9%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Sep 2025
Aug 2026
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 89.5% | 20 |
| October 2025 | 92.3% | 13 |
| November 2025 | 84.0% | 26 |
| December 2025 | 76.2% | 43 |
| January 2026 | 67.6% | 36 |
| February 2026 | 85.7% | 28 |
| March 2026 | 83.3% | 31 |
| April 2026 | 89.7% | 30 |
| May 2026 | 93.5% | 31 |
| June 2026 | 82.8% | 30 |
| July 2026 | 90.0% | 31 |
| August 2026 | 100.0% | 12 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| Delta Air Lines | 321 | 84.3% | 1.9% | 53 min |
| NK | 10 | 88.9% | 0.0% | 68 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
DL1913
14% late · 304 flights
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