Chicago O'Hare International ⇄ Baltimore/Washington International Thurgood Marshall ORD–BWI
Airlines flew 5,258 flights between Chicago O'Hare International ORD in Chicago, IL and Baltimore/Washington International Thurgood Marshall BWI in Baltimore, MD in the twelve months to July 2026, both directions together: 528,869 passengers in 654,065 seats, 81% of them filled, and 231,773 pounds of freight. 622 miles, about 85 minutes in the air, on 14 airlines: United Air Lines Inc. (2,388), Envoy Air (1,632), Republic Airline (622), Frontier Airlines Inc. (268) and 10 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 | 351 |
| 2/25 | 358 |
| 3/25 | 442 |
| 4/25 | 408 |
| 5/25 | 462 |
| 6/25 | 472 |
| 7/25 | 472 |
| 8/25 | 501 |
| 9/25 | 496 |
| 10/25 | 503 |
| 11/25 | 404 |
| 12/25 | 403 |
| 1/26 | 287 |
| 2/26 | 329 |
| 3/26 | 375 |
| 4/26 | 489 |
| 5/26 | 543 |
| 6/26 | 467 |
| 7/26 | 461 |
Passengers by month
By month, as a table
| passengers | |
|---|---|
| 1/25 | 30,533 |
| 2/25 | 28,787 |
| 3/25 | 38,536 |
| 4/25 | 41,778 |
| 5/25 | 49,233 |
| 6/25 | 51,652 |
| 7/25 | 51,182 |
| 8/25 | 54,836 |
| 9/25 | 52,171 |
| 10/25 | 55,565 |
| 11/25 | 38,973 |
| 12/25 | 39,310 |
| 1/26 | 29,673 |
| 2/26 | 29,660 |
| 3/26 | 33,165 |
| 4/26 | 43,484 |
| 5/26 | 52,267 |
| 6/26 | 49,822 |
| 7/26 | 49,943 |
The airlines twelve months, both directions
| Airline | Flights | Passengers | Seats filled | Service |
|---|---|---|---|---|
| United Air Lines Inc. UA | 2,388 | 311,800 | 81% | charter passenger service, scheduled passenger service |
| Envoy Air MQ | 1,632 | 98,663 | 85% | scheduled passenger service |
| Republic Airline YX | 622 | 38,195 | 81% | scheduled passenger service |
| Frontier Airlines Inc. F9 | 268 | 41,656 | 74% | scheduled passenger service |
| Southwest Airlines Co. WN | 189 | 24,618 | 76% | scheduled passenger service |
| SkyWest Airlines Inc. OO | 55 | 3,275 | 80% | scheduled passenger service |
| American Airlines Inc. AA | 52 | 5,429 | 75% | scheduled passenger service |
| Spirit Air Lines NK | 38 | 4,375 | 64% | scheduled passenger service |
| Sun Country Airlines d/b/a MN Airlines SY | 5 | 619 | 67% | charter passenger service |
| Delta Air Lines Inc. DL | 2 | 103 | 57% | charter passenger service, scheduled passenger service |
| CommuteAir LLC dba CommuteAir C5 | 2 | 70 | 70% | scheduled passenger service |
| Global Crossing Airlines, Inc. GCA | 2 | 0 | 0% | charter passenger service |
| CFM Inc d/b/a Contour Airlines d/b/a One Jet Shuttle LF | 2 | 2 | 4% | charter passenger service |
| TEM Enterprises dba Avelo Airlines XP | 1 | 64 | 34% | charter passenger service |
The aircraft as the airlines report their types
| Aircraft | Flights | Seats a flight | Passengers |
|---|---|---|---|
| Embraer ERJ-175 | 1,528 | 76 | 95,029 |
| Embraer-Emb-170 | 781 | 65 | 45,104 |
| Boeing 737-900ER | 614 | 179 | 89,921 |
| Airbus Industrie A320-100/200 | 575 | 151 | 69,265 |
| Boeing 737-800 | 565 | 168 | 73,479 |
| Airbus Industrie A319 | 322 | 126 | 34,800 |
| Boeing B737 Max 900 | 260 | 179 | 38,342 |
| Airbus Industrie A320-200n | 162 | 185 | 23,270 |
| Boeing B737 Max 800 | 155 | 170 | 21,080 |
| Boeing 737-700/700LR/Max 7 | 148 | 129 | 15,998 |
| Airbus Industrie A321-200n | 74 | 234 | 11,158 |
| Airbus Industrie A321Neoxlr | 65 | 229 | 10,678 |
| Boeing 777-200ER/200LR/233LR | 3 | 364 | 570 |
| Bombardier Challenger 604/605 | 2 | 24 | 2 |
| Embraer-145 | 2 | 50 | 70 |
| Boeing 757-200 | 1 | 72 | 0 |
| A200-100 BD-500-1A10 | 1 | 109 | 103 |
ORD → BWI this direction alone · flown January 2025 to July 2026
2,632 flights of 2,687 scheduled, 267,085 passengers in 328,617 seats, 156,727 pounds of freight, 45,362 pounds of mail. United Air Lines Inc. 1,195; Envoy Air 816; Republic Airline 311; Frontier Airlines Inc. 134; Southwest Airlines Co. 94; SkyWest Airlines Inc. 27; American Airlines Inc. 26; Spirit Air Lines 20; Sun Country Airlines d/b/a MN Airlines 3; Delta Air Lines Inc. 2; CommuteAir LLC dba CommuteAir 1; Global Crossing Airlines, Inc. 1; CFM Inc d/b/a Contour Airlines d/b/a One Jet Shuttle 1; TEM Enterprises dba Avelo Airlines 1.
BWI → ORD this direction alone · flown January 2025 to July 2026
2,626 flights of 2,680 scheduled, 261,784 passengers in 325,448 seats, 75,046 pounds of freight, 4,418 pounds of mail. United Air Lines Inc. 1,193; Envoy Air 816; Republic Airline 311; Frontier Airlines Inc. 134; Southwest Airlines Co. 95; SkyWest Airlines Inc. 28; American Airlines Inc. 26; Spirit Air Lines 18; Sun Country Airlines d/b/a MN Airlines 2; CommuteAir LLC dba CommuteAir 1; Global Crossing Airlines, Inc. 1; CFM Inc d/b/a Contour Airlines d/b/a One Jet Shuttle 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: Chicago O'Hare International ORD and Baltimore/Washington International Thurgood Marshall BWI; all routes.