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

Luis Munoz Marin International ⇄ Baltimore/Washington International Thurgood Marshall SJU–BWI

Airlines flew 2,275 flights between Luis Munoz Marin International SJU in San Juan, PR and Baltimore/Washington International Thurgood Marshall BWI in Baltimore, MD in the twelve months to July 2026, both directions together: 369,198 passengers in 419,429 seats, 88% of them filled, and 648,396 pounds of freight. 1,565 miles, about 222 minutes in the air, on 5 airlines: Southwest Airlines Co. (1,625), Spirit Air Lines (326), Frontier Airlines Inc. (322), JetBlue Airways (1) and 1 more. Planning to fly it yourself? The weather and winds along this route right now.

2,275
flights, twelve months
SJU-BWI: 1,140 · BWI-SJU: 1,135
369,198
passengers
88% of seats filled
1,565
miles
about 222 minutes airborne
5
airlines
7 aircraft types

Flights by month both directions

0711422132841/254/257/2510/251/264/262397/26
By month, as a table
flights
1/25190
2/25178
3/25282
4/25284
5/25226
6/25265
7/25276
8/25204
9/25141
10/25121
11/25148
12/25227
1/26196
2/26173
3/26209
4/26220
5/26180
6/26217
7/26239

Passengers by month

011,55623,11234,66846,2241/254/257/2510/251/264/2641,8257/26
By month, as a table
passengers
1/2529,853
2/2526,605
3/2544,443
4/2545,491
5/2534,440
6/2541,346
7/2546,224
8/2535,289
9/2522,219
10/2518,447
11/2522,905
12/2534,003
1/2631,451
2/2627,488
3/2635,298
4/2634,150
5/2628,942
6/2637,181
7/2641,825

The airlines twelve months, both directions

AirlineFlightsPassengersSeats filledService
Southwest Airlines Co. WN1,625253,19690%scheduled passenger service
Spirit Air Lines NK32655,33381%scheduled passenger service
Frontier Airlines Inc. F932260,37086%scheduled passenger service
JetBlue Airways B6118392%scheduled passenger service
TEM Enterprises dba Avelo Airlines XP111664%scheduled passenger service

The aircraft as the airlines report their types

AircraftFlightsSeats a flightPassengers
Boeing B737 Max 800913175144,185
Boeing 737-80060017594,125
Airbus Industrie A321-200n27523053,487
Airbus Industrie A321Neoxlr19222335,173
Boeing 737-700/700LR/Max 711314015,002
Airbus Industrie A320-200n11218317,214
Airbus Industrie A320-100/2007017610,012

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

1,140 flights of 1,144 scheduled, 186,228 passengers in 211,178 seats, 86,579 pounds of freight. Southwest Airlines Co. 814; Frontier Airlines Inc. 162; Spirit Air Lines 162; JetBlue Airways 1; TEM Enterprises dba Avelo Airlines 1.

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

1,135 flights of 1,142 scheduled, 182,970 passengers in 208,251 seats, 561,817 pounds of freight. Southwest Airlines Co. 811; Spirit Air Lines 164; Frontier Airlines Inc. 160.

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 Baltimore/Washington International Thurgood Marshall BWI; all routes.