Washington Dulles International ⇄ Chicago O'Hare International IAD–ORD
Airlines flew 4,241 flights between Washington Dulles International IAD in Washington, DC and Chicago O'Hare International ORD in Chicago, IL in the twelve months to July 2026, both directions together: 592,689 passengers in 748,071 seats, 79% of them filled, and 763,012 pounds of freight. 588 miles, about 95 minutes in the air, on 11 airlines: United Air Lines Inc. (4,159), SkyWest Airlines Inc. (48), Delta Air Lines Inc. (9), CFM Inc d/b/a Contour Airlines d/b/a One Jet Shuttle (6) and 7 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 | 257 |
| 2/25 | 238 |
| 3/25 | 305 |
| 4/25 | 364 |
| 5/25 | 381 |
| 6/25 | 379 |
| 7/25 | 384 |
| 8/25 | 394 |
| 9/25 | 410 |
| 10/25 | 357 |
| 11/25 | 303 |
| 12/25 | 306 |
| 1/26 | 269 |
| 2/26 | 226 |
| 3/26 | 303 |
| 4/26 | 375 |
| 5/26 | 444 |
| 6/26 | 422 |
| 7/26 | 432 |
Passengers by month
By month, as a table
| passengers | |
|---|---|
| 1/25 | 31,100 |
| 2/25 | 27,266 |
| 3/25 | 40,041 |
| 4/25 | 47,896 |
| 5/25 | 56,571 |
| 6/25 | 59,778 |
| 7/25 | 58,942 |
| 8/25 | 57,703 |
| 9/25 | 53,115 |
| 10/25 | 51,151 |
| 11/25 | 41,342 |
| 12/25 | 42,846 |
| 1/26 | 31,411 |
| 2/26 | 28,775 |
| 3/26 | 43,915 |
| 4/26 | 50,568 |
| 5/26 | 61,700 |
| 6/26 | 65,096 |
| 7/26 | 65,067 |
The airlines twelve months, both directions
| Airline | Flights | Passengers | Seats filled | Service |
|---|---|---|---|---|
| United Air Lines Inc. UA | 4,159 | 591,720 | 80% | charter cargo service, scheduled passenger service |
| SkyWest Airlines Inc. OO | 48 | 1 | 0% | scheduled passenger service |
| Delta Air Lines Inc. DL | 9 | 217 | 27% | charter passenger service |
| CFM Inc d/b/a Contour Airlines d/b/a One Jet Shuttle LF | 6 | 0 | 0% | charter passenger service |
| Republic Airline YX | 6 | 212 | 46% | scheduled passenger service |
| Sun Country Airlines d/b/a MN Airlines SY | 4 | 172 | 23% | charter passenger service |
| GoJet Airlines LLC d/b/a United Express G7 | 2 | 36 | 36% | scheduled passenger service |
| American Airlines Inc. AA | 2 | 177 | 69% | charter passenger service |
| Breeze Aviation Group DBA Breeze MX | 2 | 91 | 37% | charter passenger service |
| Air Wisconsin Airlines Corp ZW | 2 | 62 | 62% | charter passenger service |
| Jet Aviation Flight Services, Inc. 27Q | 1 | 1 | 7% | charter passenger service |
The aircraft as the airlines report their types
| Aircraft | Flights | Seats a flight | Passengers |
|---|---|---|---|
| Boeing 737-900ER | 1,606 | 179 | 230,229 |
| Boeing B737 Max 900 | 683 | 179 | 93,400 |
| Airbus Industrie A321-200n | 630 | 200 | 103,619 |
| Boeing 757-200 | 422 | 174 | 61,862 |
| Boeing 737-800 | 356 | 166 | 44,853 |
| Boeing B737 Max 800 | 228 | 166 | 28,665 |
| Airbus Industrie A320-100/200 | 72 | 150 | 8,872 |
| Boeing 737-700/700LR/Max 7 | 70 | 126 | 7,259 |
| Airbus Industrie A319 | 48 | 126 | 4,760 |
| Canadair RJ-200ER /RJ-440 | 43 | 50 | 63 |
| Boeing 757-300 | 28 | 234 | 4,308 |
| Boeing 767-300/300ER | 19 | 168 | 2,624 |
| Bombardier CRJ550 | 9 | 50 | 36 |
| B787-800 Dreamliner | 7 | 208 | 1,062 |
| Embraer ERJ-175 | 6 | 76 | 212 |
| Bombardier Challenger 604/605 | 5 | 24 | 0 |
| Boeing 777-200ER/200LR/233LR | 2 | 364 | 451 |
| Boeing 767-400/ER | 1 | 238 | 0 |
| Embraer 190 | 1 | 108 | 45 |
| B787-900 Dreamliner | 1 | 257 | 169 |
| Gulfstream G450 | 1 | 14 | 1 |
| Embraer-135 | 1 | 30 | 0 |
| A220-300 BD-500-1A11 | 1 | 137 | 46 |
| Boeing 787-10 Dreamliner | 1 | 318 | 153 |
IAD → ORD this direction alone · flown January 2025 to July 2026
2,106 flights of 2,105 scheduled, 298,945 passengers in 372,262 seats, 342,635 pounds of freight, 22,964 pounds of mail. United Air Lines Inc. 2,071; SkyWest Airlines Inc. 18; Delta Air Lines Inc. 6; GoJet Airlines LLC d/b/a United Express 2; CFM Inc d/b/a Contour Airlines d/b/a One Jet Shuttle 2; Sun Country Airlines d/b/a MN Airlines 2; Republic Airline 2; American Airlines Inc. 1; Breeze Aviation Group DBA Breeze 1; Air Wisconsin Airlines Corp 1.
ORD → IAD this direction alone · flown January 2025 to July 2026
2,135 flights of 2,115 scheduled, 293,744 passengers in 375,809 seats, 420,377 pounds of freight, 221,466 pounds of mail. United Air Lines Inc. 2,088; SkyWest Airlines Inc. 30; CFM Inc d/b/a Contour Airlines d/b/a One Jet Shuttle 4; Republic Airline 4; Delta Air Lines Inc. 3; Sun Country Airlines d/b/a MN Airlines 2; Jet Aviation Flight Services, Inc. 1; American Airlines Inc. 1; Breeze Aviation Group DBA Breeze 1; Air Wisconsin Airlines Corp 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: Washington Dulles International IAD and Chicago O'Hare International ORD; all routes.