Pittsburgh International ⇄ Washington Dulles International PIT–IAD
Airlines flew 2,915 flights between Pittsburgh International PIT in Pittsburgh, PA and Washington Dulles International IAD in Washington, DC in the twelve months to July 2026, both directions together: 204,343 passengers in 281,913 seats, 72% of them filled, and 61,809 pounds of freight. 182 miles, about 40 minutes in the air, on 16 airlines: Republic Airline (1,405), United Air Lines Inc. (1,031), Mesa Airlines Inc. (319), CommuteAir LLC dba CommuteAir (79) and 12 more. Planning to fly it yourself? The weather and winds along this route right now.
Flights by month both directions
By month, as a table
| flights | |
|---|---|
| 1/25 | 173 |
| 2/25 | 164 |
| 3/25 | 227 |
| 4/25 | 295 |
| 5/25 | 312 |
| 6/25 | 286 |
| 7/25 | 305 |
| 8/25 | 248 |
| 9/25 | 243 |
| 10/25 | 250 |
| 11/25 | 238 |
| 12/25 | 250 |
| 1/26 | 238 |
| 2/26 | 225 |
| 3/26 | 255 |
| 4/26 | 248 |
| 5/26 | 244 |
| 6/26 | 242 |
| 7/26 | 234 |
Passengers by month
By month, as a table
| passengers | |
|---|---|
| 1/25 | 10,393 |
| 2/25 | 9,808 |
| 3/25 | 13,198 |
| 4/25 | 16,685 |
| 5/25 | 20,201 |
| 6/25 | 17,433 |
| 7/25 | 18,535 |
| 8/25 | 15,682 |
| 9/25 | 17,797 |
| 10/25 | 18,468 |
| 11/25 | 16,700 |
| 12/25 | 17,270 |
| 1/26 | 14,583 |
| 2/26 | 15,745 |
| 3/26 | 19,371 |
| 4/26 | 18,038 |
| 5/26 | 16,478 |
| 6/26 | 17,060 |
| 7/26 | 17,151 |
The airlines twelve months, both directions
| Airline | Flights | Passengers | Seats filled | Service |
|---|---|---|---|---|
| Republic Airline YX | 1,405 | 85,869 | 81% | scheduled passenger service |
| United Air Lines Inc. UA | 1,031 | 92,297 | 64% | scheduled passenger service |
| Mesa Airlines Inc. YV | 319 | 19,376 | 84% | scheduled passenger service |
| CommuteAir LLC dba CommuteAir C5 | 79 | 3,595 | 91% | scheduled passenger service |
| GoJet Airlines LLC d/b/a United Express G7 | 49 | 2,142 | 87% | scheduled passenger service |
| Delta Air Lines Inc. DL | 15 | 456 | 35% | charter passenger service |
| SkyWest Airlines Inc. OO | 3 | 0 | 0% | scheduled passenger service |
| Air Canada AC | 3 | 151 | 53% | charter passenger service |
| CFM Inc d/b/a Contour Airlines d/b/a One Jet Shuttle LF | 2 | 12 | 75% | charter passenger service |
| United Parcel Service 5X | 2 | 0 | scheduled cargo service | |
| Breeze Aviation Group DBA Breeze MX | 2 | 194 | 79% | scheduled passenger service |
| Endeavor Air Inc. 9E | 1 | 62 | 90% | scheduled passenger service |
| Southern Airways Express, dba Mokulele Airlines 9X | 1 | 6 | 67% | scheduled passenger service |
| KaiserAir, Inc. 1EQ | 1 | 52 | 76% | charter passenger service |
| Alaska Airlines Inc. AS | 1 | 0 | 0% | charter passenger service |
| Southwest Airlines Co. WN | 1 | 131 | 92% | scheduled passenger service |
The aircraft as the airlines report their types
| Aircraft | Flights | Seats a flight | Passengers |
|---|---|---|---|
| Embraer ERJ-175 | 1,534 | 75 | 93,786 |
| Boeing 737-700/700LR/Max 7 | 418 | 126 | 38,360 |
| Airbus Industrie A319 | 252 | 126 | 20,688 |
| Embraer-Emb-170 | 190 | 70 | 11,459 |
| Airbus Industrie A320-100/200 | 115 | 149 | 11,341 |
| Boeing B737 Max 800 | 89 | 166 | 7,366 |
| Embraer-145 | 79 | 50 | 3,595 |
| Boeing 737-900ER | 79 | 179 | 6,669 |
| Boeing 737-800 | 53 | 166 | 5,243 |
| Bombardier CRJ550 | 49 | 50 | 2,142 |
| Boeing B737 Max 900 | 22 | 179 | 2,062 |
| Boeing 757-200 | 16 | 71 | 360 |
| Airbus Industrie A321-200n | 10 | 200 | 998 |
| Canadair RJ-200ER /RJ-440 | 3 | 50 | 0 |
| Embraer-135 | 2 | 8 | 12 |
| Cessna C208B/Grand Caravan | 1 | 9 | 6 |
| Canadair RJ-700 | 1 | 69 | 62 |
| Embraer 190 | 1 | 108 | 96 |
| A220-300 BD-500-1A11 | 1 | 137 | 98 |
PIT → IAD this direction alone · flown January 2025 to July 2026
1,452 flights of 1,461 scheduled, 102,514 passengers in 140,420 seats, 7,404 pounds of freight. Republic Airline 702; United Air Lines Inc. 515; Mesa Airlines Inc. 159; CommuteAir LLC dba CommuteAir 39; GoJet Airlines LLC d/b/a United Express 25; Delta Air Lines Inc. 7; SkyWest Airlines Inc. 2; Endeavor Air Inc. 1; Southern Airways Express, dba Mokulele Airlines 1; CFM Inc d/b/a Contour Airlines d/b/a One Jet Shuttle 1.
IAD → PIT this direction alone · flown January 2025 to July 2026
1,463 flights of 1,464 scheduled, 101,829 passengers in 141,493 seats, 54,405 pounds of freight. Republic Airline 703; United Air Lines Inc. 516; Mesa Airlines Inc. 160; CommuteAir LLC dba CommuteAir 40; GoJet Airlines LLC d/b/a United Express 24; Delta Air Lines Inc. 8; Air Canada 3; United Parcel Service 2; Breeze Aviation Group DBA Breeze 2; KaiserAir, Inc. 1; Alaska Airlines Inc. 1; CFM Inc d/b/a Contour Airlines d/b/a One Jet Shuttle 1; SkyWest Airlines Inc. 1; Southwest Airlines Co. 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 Washington Dulles International IAD; all routes.