Cheap Flights from Baltimore (BWI) to St. Louis (SUS)

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Frequently asked questions

How much does a flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Spirit of St. Louis Airport (SUS) cost?
Discover the latest flight deals from BWI to SUS by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from BWI to SUS?
The cheapest flights from BWI to SUS are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from BWI to SUS?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from BWI to SUS. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Spirit of St. Louis Airport (SUS)?
Nonstop flights from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Spirit of St. Louis Airport (SUS) aren’t available daily, so you’ll need to take a flight with a layover. Explore your options with Expedia’s filters. Enter your travel details and pick either “1 Stop” or “2+ Stops.”
What day of the week has the most flights from BWI to SUS?
You’ll usually find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Spirit of St. Louis Airport (SUS)?
To avoid potential delays on the Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Spirit of St. Louis Airport (SUS) route, travel before 3 PM. Later flights have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
What airports do you fly into for St. Louis from Baltimore Washington Intl. Thurgood Marshall Airport (BWI)?
Lambert-St. Louis Intl. Airport (STL) is the only airport in St. Louis with direct flights from Baltimore Washington Intl. Thurgood Marshall Airport (BWI). Browse your options and discover cheap fares on Expedia.
Is it cheaper to buy a plane ticket from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Spirit of St. Louis Airport (SUS) last-minute?
Last-minute bookings from BWI to SUS are typically more expensive. To lock in the lowest prices, start searching for flights early. That being said, if you’re flexible with your travel dates, it’s possible to score a cheap fare right before you leave.
Is it cheaper to book a BWI to SUS flight and hotel package?
Compared with arranging flights and hotels separately, booking a BWI to SUS flight and hotel package with Expedia could lead to significant savings. What’s more, managing everything in one place takes the hassle out of planning your trip. Simply secure your flights and choose from our extensive range of stays, then tailor your trip with extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Spirit of St. Louis Airport (SUS)?
In most cases, you can cancel or reschedule your BWI to SUS flight. However, additional fees may apply, especially if you booked over 24 hours ago. Double-check your itinerary for the airline’s fees and policies on flight changes, or if you want further information, go to our Customer Service portal.
*Available to One Key members.