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

Chicago O'Hare International ⇄ San Jose ORD–SJO

Airlines flew 518 flights between Chicago O'Hare International ORD in Chicago, IL and San Jose, Costa Rica SJO in San Jose, CR in the twelve months to July 2026, both directions together: 70,522 passengers in 87,634 seats, 80% of them filled, and 69,995 pounds of freight. 2,213 miles, about 272 minutes in the air, on 3 airlines: American Airlines Inc. (295), United Air Lines Inc. (221), National Air Cargo Group Inc d/ba National Airlines (2).

518
flights, twelve months
ORD-SJO: 259 · SJO-ORD: 259
70,522
passengers
80% of seats filled
2,213
miles
about 272 minutes airborne
3
airlines
4 aircraft types

Flights by month both directions

02855821101/254/257/2512/253/266/2667/26
By month, as a table
flights
1/2516
2/2516
3/2518
4/258
5/2512
6/2518
7/2516
8/2512
11/2562
12/2594
1/26103
2/2695
3/26110
4/2619
5/269
6/268
7/266

Passengers by month

03,7137,42611,13914,8521/254/257/2512/253/266/269217/26
By month, as a table
passengers
1/252,463
2/252,353
3/252,628
4/251,203
5/251,695
6/252,685
7/252,500
8/251,634
11/256,302
12/2512,726
1/2614,815
2/2613,782
3/2614,852
4/262,851
5/261,378
6/261,261
7/26921

The airlines twelve months, both directions

AirlineFlightsPassengersSeats filledService
American Airlines Inc. AA29539,13777%scheduled passenger service
United Air Lines Inc. UA22131,38585%scheduled passenger service
National Air Cargo Group Inc d/ba National Airlines N820charter cargo service

The aircraft as the airlines report their types

AircraftFlightsSeats a flightPassengers
Boeing B737 Max 80046716964,136
Boeing 737-800331714,355
Boeing B737 Max 900161792,031
Boeing 747-400200

ORD → SJO this direction alone · flown January 2025 to July 2026

259 flights of 265 scheduled, 37,637 passengers in 43,642 seats, 39,995 pounds of freight, 5,564 pounds of mail. American Airlines Inc. 146; United Air Lines Inc. 111; National Air Cargo Group Inc d/ba National Airlines 2.

SJO → ORD this direction alone · flown January 2025 to July 2026

259 flights of 268 scheduled, 32,885 passengers in 43,992 seats, 30,000 pounds of freight. American Airlines Inc. 149; United Air Lines Inc. 110.

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: Chicago O'Hare International ORD and San Jose, Costa Rica SJO; all routes.