Detroit (DTW) to San Juan (SJU)
Flight time
≈ 4h 40m
Bearing
143° SE
Detroit (DTW) to San Juan (SJU) is 1,933 miles (3,111 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies DTW–SJU
Filed traffic dataIn July 2026, Delta Air Lines was the only carrier flying nonstop DTW–SJU; the Boeing 737-900ER was the most common aircraft at 100% of departures; flights ran 92% full.
Departures
61
July 2026
Seats
10,979
both directions
Passengers
10,138
both directions
Load factor
92.3%
RPM ÷ ASM
Who flies DTW–SJU?
Delta Air Lines was the only carrier to fly nonstop DTW–SJU in July 2026 (61 departures).
- DL
61 departures · 10,979 seats
Share of departures100.0%92.3%
Load
What plane flies DTW–SJU?
In July 2026, the Boeing 737-900ER flew 100% of DTW–SJU departures.
- Boeing 737-900ER
61 departures · 92.3% load
100.0%
How has DTW–SJU traffic changed?
Nonstop DTW–SJU departures fell from 76 in August 2025 to 61 in July 2026.
Monthly nonstop DTW–SJU traffic, trailing 12 months through July 2026. Bars scale to the busiest month; months with no filed service show as zero.
August 2025
76 departures · 12,185 passengers
82.6%
Load
September 2025
41 departures · 6,270 passengers
85.8%
Load
October 2025
26 departures · 4,149 passengers
88.8%
Load
November 2025
51 departures · 7,911 passengers
86.2%
Load
December 2025
86 departures · 12,677 passengers
84.5%
Load
January 2026
68 departures · 11,112 passengers
91.4%
Load
February 2026
56 departures · 9,124 passengers
90.5%
Load
March 2026
60 departures · 10,131 passengers
93.8%
Load
April 2026
59 departures · 9,501 passengers
89.5%
Load
May 2026
62 departures · 9,901 passengers
88.8%
Load
June 2026
60 departures · 9,583 passengers
88.7%
Load
July 2026
61 departures · 10,138 passengers
92.3%
Load
By direction
Each direction is filed separately — they rarely match.
DTW → SJU
89.0% full
31 departures · 4,964 passengers
SJU → DTW
95.8% full
30 departures · 5,174 passengers
Nonstop DTW–SJU traffic has been filed since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through July 2026; filings from 2025. Public domain (US Government work).
The airports
San Juan
PR
Luis Munoz Marin International Airport
Coordinates
18.44°N, 66.00°W
Hemisphere
N · W
Frequently asked
How far is Detroit (DTW) from San Juan (SJU)?
DTW to SJU is 1,933 miles (3,111 km / 1,680 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from DTW to SJU?
A nonstop covers the 1,933-mile great-circle distance in roughly 4h 40m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies DTW–SJU?
In July 2026, the Boeing 737-900ER flew the largest share of departures (100.0%).
What mileage do I earn flying DTW–SJU?
Distance-based programs credit off the 1,933-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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