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

Denver International ⇄ Pittsburgh International DEN–PIT

Airlines flew 3,320 flights between Denver International DEN in Denver, CO and Pittsburgh International PIT in Pittsburgh, PA in the twelve months to July 2026, both directions together: 457,553 passengers in 567,210 seats, 81% of them filled, and 234,046 pounds of freight. 1,290 miles, about 152 minutes in the air, on 5 airlines: United Air Lines Inc. (1,699), Southwest Airlines Co. (1,537), Frontier Airlines Inc. (82), Delta Air Lines Inc. (1) and 1 more. Planning to fly it yourself? The weather and winds along this route right now.

3,320
flights, twelve months
DEN-PIT: 1,669 · PIT-DEN: 1,651
457,553
passengers
81% of seats filled
1,290
miles
about 152 minutes airborne
5
airlines
12 aircraft types

Flights by month both directions

0921852783701/254/257/2510/251/264/262977/26
By month, as a table
flights
1/25220
2/25195
3/25244
4/25253
5/25274
6/25338
7/25370
8/25353
9/25335
10/25356
11/25316
12/25277
1/26206
2/26184
3/26239
4/26234
5/26239
6/26284
7/26297

Passengers by month

012,45024,90037,35149,8011/254/257/2510/251/264/2644,4727/26
By month, as a table
passengers
1/2529,080
2/2525,271
3/2531,869
4/2530,354
5/2537,094
6/2547,465
7/2549,801
8/2549,718
9/2547,056
10/2549,445
11/2538,589
12/2537,028
1/2626,959
2/2624,457
3/2631,599
4/2631,006
5/2633,923
6/2643,301
7/2644,472

The airlines twelve months, both directions

AirlineFlightsPassengersSeats filledService
United Air Lines Inc. UA1,699241,97485%charter passenger service, scheduled passenger service
Southwest Airlines Co. WN1,537202,86377%scheduled passenger service
Frontier Airlines Inc. F98212,43470%scheduled passenger service
Delta Air Lines Inc. DL115396%scheduled passenger service
JetBlue Airways B6112992%scheduled passenger service

The aircraft as the airlines report their types

AircraftFlightsSeats a flightPassengers
Boeing 737-8001,024171138,978
Boeing B737 Max 800881174119,865
Boeing 737-900ER804179121,900
Boeing 737-700/700LR/Max 715514017,791
Airbus Industrie A31914812616,945
Airbus Industrie A320-100/20014215017,681
Boeing B737 Max 9007517910,832
Airbus Industrie A321-200n432337,148
Airbus Industrie A320-200n321864,236
Airbus Industrie A321Neoxlr142301,984
Boeing 757-300123464
A220-300 BD-500-1A111140129

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

1,669 flights of 1,657 scheduled, 227,840 passengers in 285,929 seats, 144,495 pounds of freight, 20 pounds of mail. United Air Lines Inc. 853; Southwest Airlines Co. 774; Frontier Airlines Inc. 41; Delta Air Lines Inc. 1.

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

1,651 flights of 1,659 scheduled, 229,713 passengers in 281,281 seats, 89,551 pounds of freight. United Air Lines Inc. 846; Southwest Airlines Co. 763; Frontier Airlines Inc. 41; JetBlue Airways 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: Denver International DEN and Pittsburgh International PIT; all routes.