$70 Cheap Southwest Airlines flights Chicago (ORD) to Baltimore (BWI)

You can find affordable return Southwest Airlines flights from $130 from ORD to BWI by sorting your results from "Price (lowest to highest)" on Expedia. Or look for options from $70 for a one-way trip.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

To find cheap Southwest Airlines fares from O'Hare Intl. Airport (ORD) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI), start searching one to three months before your planned departure. Reserving domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also influence the overall cost. Sunday is usually the cheapest, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking on a Sunday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.

Taking off from ORD at 7:00AM UTC-6, the first Southwest Airlines flight to BWI lands at 9:55AM UTC-5. Traveling earlier in the day means you'll be less likely to encounter cancellations or delays.* Not an early riser? The last Southwest Airlines flight from ORD to BWI departs at 4:35PM UTC-6 and touches down at 7:30PM UTC-5.*Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.