Airports · Chicago O'Hare International Airport
Flights from Chicago (ORD)
Airlines flew 420,599 departures out of Chicago O'Hare International Airport (ORD) carrying 41,990,769 passengers over the 12 months through April 2026. Here's what actually flew — the busiest routes, the carriers, and the aircraft — from US DOT T-100 filings.
What flies from Chicago
US DOT T-100 · filed dataWhat airlines actually flew out of Chicago — departures, seats, and passengers filed with the US DOT (T-100) over the trailing 12 months, not a schedule.
Departures
420,599
April 2026
Seats flown
51,809,313
Passengers
41,990,769
Load factor
81.0%
passengers ÷ seats
Busiest routes from Chicago
Where flights from Chicago go most, by departures over the trailing 12 months.
11,046 departures · 1,380,108 passengers
85.6%
Load
7,278 departures · 920,089 passengers
87.0%
Load
6,974 departures · 1,157,940 passengers
83.7%
Load
6,658 departures · 945,474 passengers
84.0%
Load
6,624 departures · 632,733 passengers
71.0%
Load
6,472 departures · 638,324 passengers
81.9%
Load
6,285 departures · 983,001 passengers
82.9%
Load
6,237 departures · 792,909 passengers
80.8%
Load
6,187 departures · 1,010,916 passengers
84.8%
Load
5,963 departures · 848,109 passengers
83.6%
Load
5,937 departures · 396,202 passengers
73.6%
Load
5,798 departures · 840,099 passengers
86.7%
Load
5,574 departures · 449,862 passengers
84.1%
Load
5,556 departures · 856,500 passengers
85.2%
Load
5,491 departures · 980,113 passengers
88.4%
Load
Airlines at Chicago
Ranked by seats flown — the capacity each carrier actually operated out of Chicago.
- UA
18,822,319 seats · 81.9% load
36.3%
Share
- AA
10,707,187 seats · 82.4% load
20.7%
Share
- OO
4,523,697 seats · 76.7% load
8.7%
Share
- MQ
3,923,950 seats · 77.0% load
7.6%
Share
- YX
2,532,080 seats · 81.1% load
4.9%
Share
- DL
1,468,851 seats · 81.0% load
2.8%
Share
- G7
1,153,700 seats · 84.0% load
2.2%
Share
- NK
1,137,815 seats · 84.7% load
2.2%
Share
- F9
950,856 seats · 81.9% load
1.8%
Share
- WN
729,121 seats · 77.3% load
1.4%
Share
Aircraft flown from Chicago
Aircraft types by share of departures — what actually operated, not what's based here.
76,656 departures · 79.8% load
18.2%
Share
55,278 departures · 81.6% load
13.1%
Share
Bombardier CRJ-550
35,687 departures · 82.5% load
8.5%
Share
34,526 departures · 76.4% load
8.2%
Share
24,468 departures · 80.0% load
5.8%
Share
23,049 departures · 76.3% load
5.5%
Share
21,084 departures · 71.3% load
5.0%
Share
20,671 departures · 83.7% load
4.9%
Share
18,878 departures · 81.6% load
4.5%
Share
16,563 departures · 80.8% load
3.9%
Share
15,238 departures · 80.0% load
3.6%
Share
10,628 departures · 81.1% load
2.5%
Share
Monthly departures from Chicago
Monthly departures from Chicago, trailing 12 months through April 2026. Bars scale to the busiest month.
May 2025
35,415 departures · 3,700,316 passengers
84.1%
Load
June 2025
36,569 departures · 3,957,028 passengers
86.4%
Load
July 2025
36,933 departures · 3,992,152 passengers
85.4%
Load
August 2025
36,285 departures · 3,856,558 passengers
84.2%
Load
September 2025
35,168 departures · 3,618,306 passengers
81.8%
Load
October 2025
37,539 departures · 3,818,677 passengers
82.2%
Load
November 2025
32,919 departures · 3,104,614 passengers
77.5%
Load
December 2025
33,657 departures · 3,330,627 passengers
81.7%
Load
January 2026
30,431 departures · 2,719,407 passengers
74.2%
Load
February 2026
30,935 departures · 2,839,535 passengers
76.9%
Load
March 2026
36,086 departures · 3,576,944 passengers
81.5%
Load
April 2026
38,662 departures · 3,476,605 passengers
74.5%
Load
Source: US DOT Bureau of Transportation Statistics, T-100 Segment. Data through April 2026. The DOT publishes roughly three months in arrears.