Detroit (DTW) to San Juan (SJU) flights
Delta Air Lines flies nonstop from Detroit Metropolitan Wayne County Airport to Luis Munoz Marin International Airport, with about 7 flights a week in July 2026. The 1,930-mile flight takes about 4h 26m gate to gate.
- Distance
- 1,930 mi · 3,106 km
- Flight time
- 4h 26m
- Airlines
- 1
- Seats filled
- 87%
Airlines flying DTW to SJU
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Delta Air Lines | 7 | Boeing 737-900ER, Boeing 737-800 | 50,515 | 4h 25m |
| Spirit AirlinesCeased operations 2026-05-02 | n/a | Airbus A320neo, Airbus A321, Airbus A320-100/200 | 5,211 | 4h 31m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
DTW to SJU flight schedule
1 flight numbers flew this route in August 2026. The first usually leaves at 8:40am and the last at 8:40am. Times are local and can change; check with the airline before you book.
| Flight | Departs | Arrives | Days flown in August 2026 | On time (12 months) |
|---|---|---|---|---|
| DL 1913Delta Air Lines | 8:40am | 1:16pm | 12 | 76% |
Is DTW to SJU on time?
From September 2025 to August 2026, 76% of 332 flights arrived within 15 minutes of schedule and 0.9% were cancelled. Flights leaving around 8am were the most punctual (76%), those around 10am the least (69%). Most delay time was caused by air traffic control and airport congestion (44%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| Delta Air Lines | 321 | 76% | 13 min | 0.9% |
Airlines as sold: flights operated by regional partners count under the airline on the ticket. Average delay is across all completed flights, early arrivals counted as zero.
On-time arrivals by departure time
| Scheduled departure | Flights | On time, relative | On time |
|---|---|---|---|
| 8am to 9am | 288 | 76% | |
| 9am to 10am | 26 | 72% | |
| 10am to 11am | 17 | 69% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 38 | 6,120 | |
| September 2025 | 21 | 2,995 | |
| October 2025 | 13 | 2,121 | |
| November 2025 | 25 | 3,901 | |
| December 2025 | 43 | 6,538 | |
| January 2026 | 34 | 5,448 | |
| February 2026 | 28 | 4,548 | |
| March 2026 | 30 | 5,100 | |
| April 2026 | 29 | 4,414 | |
| May 2026 | 31 | 4,842 | |
| June 2026 | 30 | 4,735 | |
| July 2026 | 31 | 4,964 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.