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

Pittsburgh International ⇄ Chicago O'Hare International PIT–ORD

Airlines flew 7,935 flights between Pittsburgh International PIT in Pittsburgh, PA and Chicago O'Hare International ORD in Chicago, IL in the twelve months to July 2026, both directions together: 638,468 passengers in 876,121 seats, 73% of them filled, and 243,752 pounds of freight. 413 miles, about 71 minutes in the air, on 9 airlines: Republic Airline (3,294), United Air Lines Inc. (2,558), American Airlines Inc. (1,184), SkyWest Airlines Inc. (484) and 5 more. Planning to fly it yourself? The weather and winds along this route right now.

7,935
flights, twelve months
PIT-ORD: 3,958 · ORD-PIT: 3,977
638,468
passengers
73% of seats filled
413
miles
about 71 minutes airborne
9
airlines
20 aircraft types

Flights by month both directions

01993985987971/254/257/2510/251/264/267567/26
By month, as a table
flights
1/25477
2/25433
3/25530
4/25557
5/25657
6/25677
7/25669
8/25671
9/25694
10/25745
11/25635
12/25612
1/26525
2/26520
3/26577
4/26685
5/26797
6/26718
7/26756

Passengers by month

015,83631,67347,51063,3461/254/257/2510/251/264/2663,3467/26
By month, as a table
passengers
1/2534,186
2/2533,467
3/2542,045
4/2544,699
5/2553,159
6/2557,018
7/2559,630
8/2559,210
9/2556,551
10/2562,898
11/2551,128
12/2545,756
1/2637,902
2/2642,388
3/2648,478
4/2652,236
5/2659,316
6/2659,259
7/2663,346

The airlines twelve months, both directions

AirlineFlightsPassengersSeats filledService
Republic Airline YX3,294195,72478%scheduled passenger service
United Air Lines Inc. UA2,558290,97474%charter passenger service, scheduled passenger service
American Airlines Inc. AA1,184100,83360%scheduled passenger service
SkyWest Airlines Inc. OO48425,13074%scheduled passenger service
Envoy Air MQ36623,39485%scheduled passenger service
GoJet Airlines LLC d/b/a United Express G7371,52883%scheduled passenger service
Delta Air Lines Inc. DL1088558%charter passenger service
United Parcel Service 5X10scheduled cargo service
Atlas Air Inc. 5Y10charter cargo service

The aircraft as the airlines report their types

AircraftFlightsSeats a flightPassengers
Embraer ERJ-1753,94076235,152
Airbus Industrie A3191,201127104,323
Boeing 737-80078716887,663
Airbus Industrie A320-100/20074215081,173
Boeing 737-900ER32917941,154
Boeing 737-700/700LR/Max 727112628,570
Boeing B737 Max 80021416625,802
Boeing B737 Max 90012617915,570
Canadair RJ-70094654,481
Bombardier CRJ55071502,660
Embraer-Emb-17061683,385
Airbus Industrie A321-200n401984,635
Airbus Industrie A321Neoxlr321902,748
Canadair RJ-200ER /RJ-440155098
Boeing 757-2004104161
A220-300 BD-500-1A113130383
Airbus Industrie A330-300/3332282284
Boeing 767-300/300ER100
B787-800 Dreamliner1234226
Boeing 747-400100

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

3,958 flights of 4,030 scheduled, 322,734 passengers in 436,811 seats, 100,481 pounds of freight, 2,028 pounds of mail. Republic Airline 1,653; United Air Lines Inc. 1,273; American Airlines Inc. 591; SkyWest Airlines Inc. 238; Envoy Air 181; GoJet Airlines LLC d/b/a United Express 18; Delta Air Lines Inc. 3; United Parcel Service 1.

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

3,977 flights of 4,036 scheduled, 315,734 passengers in 439,310 seats, 143,271 pounds of freight. Republic Airline 1,641; United Air Lines Inc. 1,285; American Airlines Inc. 593; SkyWest Airlines Inc. 246; Envoy Air 185; GoJet Airlines LLC d/b/a United Express 19; Delta Air Lines Inc. 7; Atlas Air 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: Pittsburgh International PIT and Chicago O'Hare International ORD; all routes.