DALLAS- Chicago O’Hare Airport (ORD) is one of the world’s busiest airports by aircraft movements, while Hartsfield-Jackson Atlanta International Airport (ATL) consistently leads global rankings for passenger traffic.
Southwest Airlines (WN) ended its 5-year operation at O’Hare in June 2026 and consolidated its Chicago services at Chicago Midway International Airport (MDW).
Rather than reducing its presence in Chicago, Southwest shifted operations to Midway as part of a broader network optimization strategy.
The move allows the airline to improve operational efficiency while maintaining extensive service across the Chicago market.
Southwest Airlines Operations At Chicago Midway
Southwest Airlines announced in March 2026 that it would discontinue service at Chicago O’Hare International Airport from June 2026.
The decision formed part of the airline’s ongoing effort to refine its network by concentrating flights at airports where it already has stronger operations.
According to reporting by NBC at the time, O’Hare’s large scale and operational complexity made it less efficient for Southwest than Chicago Midway, where the airline has maintained a significant presence for decades.
At the same time, Southwest also announced plans to end service at Washington Dulles International Airport (IAD).
Similar to its Chicago strategy, the airline chose to concentrate Washington-area operations through Baltimore/Washington International Thurgood Marshall Airport (BWI) and Ronald Reagan Washington National Airport (DCA).
Southwest explained the decision in an official statement:
As part of Southwest’s ongoing efforts to refine its network, the company will discontinue service to Chicago O’Hare. These changes do not represent any significant changes in availability, as we will continue our robust service at Chicago Midway.”
The announcement confirmed that Southwest was not reducing service to Chicago. Instead, the airline was strengthening its existing Midway operation by consolidating flights at a single airport.
Chicago O’Hare Remains One of the World’s Busiest Airports
Chicago O’Hare International Airport consistently ranks among the busiest airports in the world by aircraft movements.
Although Hartsfield-Jackson Atlanta International Airport handles more passengers, O’Hare records a higher number of aircraft movements because it supports a large volume of regional jet operations in addition to domestic and international services.
This operational profile creates more takeoffs and landings, allowing O’Hare to rank among the world’s busiest airports despite handling fewer passengers than Atlanta.
Southwest’s 5 Year Presence At O’Hare
Southwest Airlines served Chicago O’Hare International Airport from 2021 until June 2026. The airline entered the airport during the aviation industry’s recovery from the COVID-19 pandemic, when changing market conditions created opportunities to expand into airports that had previously offered limited access.
According to historical scheduling data from aviation analytics company Cirium, Southwest operated 6,921 scheduled departures from O’Hare during 2021.
Operations expanded significantly during the following two years before gradually declining as the airline prepared to leave the airport.
Scheduled Departures From O’Hare
| Year | Scheduled Departures |
|---|---|
| 2021 | 6,921 |
| 2022 | 9,792 |
| 2023 | 10,053 |
| 2024 | 6,934 |
| 2025 | 4,587 |
| January to June 2026 | 1,833 |
The airline reached its operational peak in 2023 with 10,053 scheduled departures. Flight numbers then steadily declined as Southwest prepared to consolidate operations at Chicago Midway.
During its final months at O’Hare, Southwest operated all 3 Boeing 737 variants in its fleet:
- Boeing 737-700
- Boeing 737-800
- Boeing 737 MAX 8
Southwest’s O’Hare Route Network
Throughout its 5-year operation, Southwest maintained a relatively focused route network from Chicago O’Hare.
Southwest’s O’Hare Network
| Metric | Value |
|---|---|
| Routes | 13 |
| Airports Served | 14 |
| Network Distance | 13,228 miles |
Eleven destinations remained part of Southwest’s O’Hare network throughout most of its operation:
- Austin
- Cancun
- Dallas
- Denver
- Fort Lauderdale
- Fort Myers
- Las Vegas
- Nashville
- Orlando
- Phoenix
- Tampa
Baltimore remained part of the network between 2021 and 2025 before being removed as part of the airline’s broader network changes.
Panama City, Florida, appeared only briefly during spring 2026, when Southwest scheduled just flights, making it the shortest-lived destination served from O’Hare.
Chicago Midway Became Southwest’s Primary Hub
Chicago Midway International Airport has long served as Southwest Airlines’ principal airport in Chicago.
The airline’s decision to leave O’Hare allows it to concentrate aircraft, crews, and schedules at a single location while continuing to offer extensive service throughout the region.
During August 2026, Southwest scheduled 6,544 departures from Midway.
Those flights included:
- 6,507 domestic departures
- 37 international departures
International services operated to:
- Cancun
- Punta Cana
Fleet utilization at Midway included:
| Aircraft | Scheduled Flights |
|---|---|
| Boeing 737 MAX 8 | 2,814 |
| Boeing 737-700 | 2,187 |
| Boeing 737-800 | 1,543 |
The figures demonstrate the scale of Southwest’s Midway operation compared with its former presence at O’Hare.
Southwest’s Busiest Routes From Chicago Midway
Three destinations each received more than 200 Southwest departures during August 2026.
| Destination | Airport | Flights |
|---|---|---|
| Denver | Denver International Airport (DEN) | 213 |
| Dallas | Dallas Love Field (DAL) | 212 |
| New York | LaGuardia Airport (LGA) | 208 |
Among Southwest’s longest routes from Midway, San Juan Luis Muñoz Marín International Airport (SJU) ranked first at approximately 2,057 miles (3,310 km).
Punta Cana International Airport (PUJ) followed closely with a route distance of approximately 1,965 miles (3,162 km).
Why Consolidation Made Business Sense
Consolidating operations at Chicago Midway simplifies Southwest’s network while improving operational efficiency.
Operating from one primary airport allows the airline to improve aircraft utilization, reduce scheduling complexity, optimize crew assignments, and strengthen connections across its Chicago network.
The strategy also aligns with Southwest’s long-standing operating model, which favors building large, efficient bases instead of dividing resources across multiple airports in the same metropolitan area.
The decision to leave O’Hare therefore reflects a strategic realignment rather than a withdrawal from the Chicago market.
As reported by Simple Flying, the move highlights Southwest’s continued focus on improving network efficiency while preserving strong service in key markets.
Bottom Line
Southwest Airlines’ five-year operation at Chicago O’Hare began during the aviation industry’s post-pandemic recovery and reached its peak in 2023 before gradually winding down.
Although the airline established service to 13 routes and operated more than 10,000 departures during its busiest year, Chicago Midway remained its stronger and more efficient base.
By consolidating operations at Midway, Southwest strengthened its long-term Chicago strategy without reducing overall service in the region.
The move supports better operational efficiency, improved resource allocation, and a more focused network while maintaining extensive connectivity for travelers.
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