Southwest to End Chicago O’Hare, Washington Dulles Service

‍DALLAS — Southwest Airlines (WN) will discontinue all flights to, from, or through Chicago O’Hare (ORD) and Washington Dulles (IAD) effective June 4, 2026, as part of its network refinement.

Southwest advised that reservations with an ORD or IAD segment on or after June 4 will be affected. Customers may travel on or before June 3, rebook, or request refunds, depending on their itinerary.

Coverage remains nearby

Southwest stated that this change does not significantly reduce access to either metro area, highlighting its continued “robust” operations at Chicago Midway (MDW), Baltimore/Washington (BWI), and Washington Reagan National (DCA).

ABC7 Chicago reports indicate WN finds operations at ORD challenging and will continue serving the Windy City through its established base at MDW. Challegning or not, O'Hare today is not the ORD of the early 2000s. Airfield capacity is stronger after runway reconfiguration, but the “summer-from-hell” risk has evolved.

The constraint is less about takeoff/landing throughput and more about gates—think aircraft sitting and waiting for a spot to park.

The O'Hare Conundrum

If the capacity surge sticks, ORD could push past its 2019 peak (noted at just over 84 million passengers) and potentially approach 90 million, tightening the race for “busiest” bragging rights.

Southwest's dual-airport presence (MDW + growing at ORD) and early interline/codeshare dynamics could have subtly reshaped flows as legacy carriers like American (AA) and United (UA) flood markets with aggressive pricing. Not anymore.

Network adjustments like these matter when two network carriers are chasing frequency leadership in the same metro.

What to watch next

With ORD and IAD service ending June 4, as per The Points Guy, the key question is how WN will redeploy aircraft time, whether to higher-performing leisure markets, growth stations, or increased frequencies at core airports. The other key question is how the legacy carriers will seize the frequency edge at ORD.