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

San Antonio International ⇄ Chicago O'Hare International SAT–ORD

Airlines flew 3,868 flights between San Antonio International SAT in San Antonio, TX and Chicago O'Hare International ORD in Chicago, IL in the twelve months to July 2026, both directions together: 377,497 passengers in 474,190 seats, 80% of them filled, and 66,738 pounds of freight. 1,041 miles, about 140 minutes in the air, on 8 airlines: United Air Lines Inc. (1,695), American Airlines Inc. (1,012), Envoy Air (743), SkyWest Airlines Inc. (224) and 4 more. Planning to fly it yourself? The weather and winds along this route right now.

3,868
flights, twelve months
SAT-ORD: 1,926 · ORD-SAT: 1,942
377,497
passengers
80% of seats filled
1,041
miles
about 140 minutes airborne
8
airlines
12 aircraft types

Flights by month both directions

0901792683581/254/257/2510/251/264/263487/26
By month, as a table
flights
1/25216
2/25202
3/25269
4/25335
5/25337
6/25331
7/25323
8/25297
9/25300
10/25358
11/25306
12/25316
1/26277
2/26288
3/26347
4/26339
5/26357
6/26335
7/26348

Passengers by month

09,90219,80429,70639,6081/254/257/2510/251/264/2636,4137/26
By month, as a table
passengers
1/2521,886
2/2521,395
3/2529,125
4/2534,734
5/2537,078
6/2539,608
7/2536,842
8/2529,919
9/2528,793
10/2537,899
11/2530,367
12/2529,292
1/2624,645
2/2624,911
3/2630,734
4/2632,497
5/2634,905
6/2637,122
7/2636,413

The airlines twelve months, both directions

AirlineFlightsPassengersSeats filledService
United Air Lines Inc. UA1,695199,88879%scheduled passenger service
American Airlines Inc. AA1,012101,31676%scheduled passenger service
Envoy Air MQ74349,25587%scheduled passenger service
SkyWest Airlines Inc. OO22413,55981%scheduled passenger service
Republic Airline YX19113,24492%scheduled passenger service
Delta Air Lines Inc. DL15171%charter passenger service
Sun Country Airlines d/b/a MN Airlines SY100%charter passenger service
Aeroenlaces Nacionales, S.A. de C.V. d/b/a VivaAerobus VB118499%scheduled passenger service

The aircraft as the airlines report their types

AircraftFlightsSeats a flightPassengers
Airbus Industrie A3191,226128124,432
Embraer ERJ-1751,1567675,951
Airbus Industrie A320-100/20045815051,440
Boeing 737-80040316752,743
Boeing 737-700/700LR/Max 732012632,565
Boeing 737-900ER15517921,445
Boeing B737 Max 90010317913,444
Boeing B737 Max 800291663,704
Airbus Industrie A321Neoxlr121901,305
Airbus Industrie A321-200n3200310
Embraer-Emb-170265107
Boeing 757-20017251

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

1,926 flights of 1,970 scheduled, 185,235 passengers in 237,451 seats, 21,246 pounds of freight. United Air Lines Inc. 842; American Airlines Inc. 505; Envoy Air 371; SkyWest Airlines Inc. 111; Republic Airline 95; Delta Air Lines Inc. 1; Sun Country Airlines d/b/a MN Airlines 1.

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

1,942 flights of 1,971 scheduled, 192,262 passengers in 236,739 seats, 45,492 pounds of freight, 606 pounds of mail. United Air Lines Inc. 853; American Airlines Inc. 507; Envoy Air 372; SkyWest Airlines Inc. 113; Republic Airline 96; Aeroenlaces Nacionales, S.A. de C.V. d/b/a VivaAerobus 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: San Antonio International SAT and Chicago O'Hare International ORD; all routes.