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

San Diego International ⇄ Chicago Midway International SAN–MDW

Airlines flew 2,160 flights between San Diego International SAN in San Diego, CA and Chicago Midway International MDW in Chicago, IL in the twelve months to July 2026, both directions together: 302,545 passengers in 360,295 seats, 84% of them filled, and 582,629 pounds of freight. 1,728 miles, about 206 minutes in the air, on 4 airlines: Southwest Airlines Co. (2,155), Jet Aviation Flight Services, Inc. (2), Delta Air Lines Inc. (2), United Air Lines Inc. (1). Planning to fly it yourself? The weather and winds along this route right now.

2,160
flights, twelve months
SAN-MDW: 1,078 · MDW-SAN: 1,082
302,545
passengers
84% of seats filled
1,728
miles
about 206 minutes airborne
4
airlines
6 aircraft types

Flights by month both directions

0521041552071/254/257/2510/251/264/262077/26
By month, as a table
flights
1/25127
2/25106
3/25176
4/25175
5/25172
6/25178
7/25184
8/25174
9/25172
10/25177
11/25168
12/25182
1/26134
2/26132
3/26197
4/26207
5/26205
6/26205
7/26207

Passengers by month

07,70015,40023,10130,8011/254/257/2510/251/264/2630,7667/26
By month, as a table
passengers
1/2516,057
2/2513,238
3/2521,173
4/2521,729
5/2522,569
6/2525,068
7/2526,104
8/2525,552
9/2524,355
10/2525,746
11/2523,403
12/2525,261
1/2617,820
2/2617,688
3/2626,870
4/2627,343
5/2626,940
6/2630,801
7/2630,766

The airlines twelve months, both directions

AirlineFlightsPassengersSeats filledService
Southwest Airlines Co. WN2,155302,23184%scheduled passenger service
Jet Aviation Flight Services, Inc. 27Q2725%charter passenger service
Delta Air Lines Inc. DL223888%charter passenger service
United Air Lines Inc. UA16939%charter passenger service

The aircraft as the airlines report their types

AircraftFlightsSeats a flightPassengers
Boeing B737 Max 8001,102175161,572
Boeing 737-80056817584,486
Boeing 737-700/700LR/Max 748513956,173
Boeing 757-2002136238
Gulfstream G6502147
Boeing B737 Max 900117969

SAN → MDW this direction alone · flown January 2025 to July 2026

1,078 flights of 1,093 scheduled, 150,183 passengers in 177,523 seats, 397,961 pounds of freight. Southwest Airlines Co. 1,076; Jet Aviation Flight Services, Inc. 1; Delta Air Lines Inc. 1.

MDW → SAN this direction alone · flown January 2025 to July 2026

1,082 flights of 1,092 scheduled, 152,362 passengers in 182,772 seats, 184,668 pounds of freight. Southwest Airlines Co. 1,079; Jet Aviation Flight Services, Inc. 1; Delta Air Lines Inc. 1; United Air Lines Inc. 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 Diego International SAN and Chicago Midway International MDW; all routes.