The U.S. aircraft register, updated daily
Routes and flights · the DOT's airline reports, August 2025 to July 2026

Luis Munoz Marin International ⇄ Cyril E King SJU–STT

Airlines flew 9,246 flights between Luis Munoz Marin International SJU in San Juan, PR and Cyril E King STT in Charlotte Amalie, VI in the twelve months to July 2026, both directions together: 129,474 passengers in 194,015 seats, 67% of them filled, and 1,961,405 pounds of freight. 68 miles, about 27 minutes in the air, on 15 airlines: Hyannis Air Service, Inc. dba Cape Air (7,521), JetBlue Airways (698), Federal Express Corporation (486), Air Charter, Inc d/b/a Air Flamenco (456) and 11 more. Planning to fly it yourself? The weather and winds along this route right now.

9,246
flights, twelve months
SJU-STT: 4,675 · STT-SJU: 4,571
129,474
passengers
67% of seats filled
68
miles
about 27 minutes airborne
15
airlines
17 aircraft types

Flights by month both directions

02264526799051/254/257/2510/251/264/267547/26
By month, as a table
flights
1/25767
2/25720
3/25838
4/25821
5/25849
6/25746
7/25764
8/25710
9/25773
10/25854
11/25748
12/25799
1/26791
2/26638
3/26770
4/26765
5/26905
6/26739
7/26754

Passengers by month

04,1368,27212,40716,5431/254/257/2510/251/264/2611,4367/26
By month, as a table
passengers
1/2514,868
2/2515,504
3/2516,543
4/2514,986
5/2516,029
6/2514,214
7/2515,098
8/2514,416
9/259,283
10/2510,921
11/2511,495
12/2511,013
1/2610,923
2/268,887
3/269,932
4/269,366
5/2610,806
6/2610,996
7/2611,436

The airlines twelve months, both directions

AirlineFlightsPassengersSeats filledService
Hyannis Air Service, Inc. dba Cape Air 9K7,52140,54160%scheduled passenger service
JetBlue Airways B669879,03970%scheduled passenger service
Federal Express Corporation FX4860scheduled cargo service
Air Charter, Inc d/b/a Air Flamenco F44560charter cargo service, scheduled passenger service
Sun Country Airlines d/b/a MN Airlines SY253,52776%scheduled passenger service
Frontier Airlines Inc. F9121,71274%scheduled passenger service
Spirit Air Lines NK111,72577%scheduled passenger service
Tradewind Aviation TJ103544%charter passenger service
United Air Lines Inc. UA81,07681%scheduled passenger service
American Airlines Inc. AA663070%scheduled passenger service
CFM Inc d/b/a Contour Airlines d/b/a One Jet Shuttle LF45647%charter passenger service, scheduled passenger service
Southwest Airlines Co. WN453898%scheduled passenger service
Delta Air Lines Inc. DL341670%scheduled passenger service
Allegiant Air G4112167%charter passenger service
Envoy Air MQ15876%scheduled passenger service

The aircraft as the airlines report their types

AircraftFlightsSeats a flightPassengers
Cessna C-402/402A/402B7,521940,541
Airbus Industrie A320-100/20069316278,520
Beechcraft Beech 18 C-185 (Federal Express has waiver to report all its small aircraft under code 110, regardless of actual aircraft type)48600
Shorts 36028300
Pilatus Britten-Norman BN2A Trislander10000
Pilatus Britten-Norman BN2/A Islander7300
Boeing 737-800251863,527
Airbus Industrie A320-200n151832,140
Boeing B737 Max 800111681,393
Pilatus PC-1210835
Airbus Industrie A321Neoxlr92091,114
Airbus Industrie A321-200n5229823
Embraer-14543056
Boeing 737-700/700LR/Max 74137538
Boeing 757-2003199416
Airbus Industrie A3193128313
Embraer ERJ-17517658

SJU → STT this direction alone · flown January 2025 to July 2026

4,675 flights of 4,445 scheduled, 60,350 passengers in 94,608 seats, 1,705,672 pounds of freight. Hyannis Air Service, Inc. dba Cape Air 3,788; JetBlue Airways 350; Air Charter, Inc d/b/a Air Flamenco 267; Federal Express Corporation 243; American Airlines Inc. 6; Frontier Airlines Inc. 6; CFM Inc d/b/a Contour Airlines d/b/a One Jet Shuttle 4; Delta Air Lines Inc. 3; Tradewind Aviation 3; United Air Lines Inc. 3; Spirit Air Lines 1; Sun Country Airlines d/b/a MN Airlines 1.

STT → SJU this direction alone · flown January 2025 to July 2026

4,571 flights of 4,422 scheduled, 69,124 passengers in 99,407 seats, 255,733 pounds of freight. Hyannis Air Service, Inc. dba Cape Air 3,733; JetBlue Airways 348; Federal Express Corporation 243; Air Charter, Inc d/b/a Air Flamenco 189; Sun Country Airlines d/b/a MN Airlines 24; Spirit Air Lines 10; Tradewind Aviation 7; Frontier Airlines Inc. 6; United Air Lines Inc. 5; Southwest Airlines Co. 4; Allegiant Air 1; Envoy Air 1.

Source: the Bureau of Transportation Statistics' T-100 Segment table (all carriers). A flight is one departure performed on this segment; seats and passengers are the airlines' own monthly reports; "seats filled" is passengers divided by seats. The miles are the DOT's great-circle distance. Both ends: Luis Munoz Marin International SJU and Cyril E King STT; all routes.