CA $163 Cheap Flights from Baltimore (BWI) to St. Louis (STL)

Popular airlines from Baltimore Washington International Airport (BWI) to Lambert-St. Louis International Airport (STL)

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Cheap flights from Baltimore (BWI) to St. Louis (STL)

Prices were available within the past 7 days and start at CA $163 for one-way flights and CA $308 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
American Airlines
Delta
Delta
American Airlines
Delta
United
Delta
American Airlines
American Airlines

Find the cheapest month to fly from Baltimore (BWI) to St. Louis (STL)

September is typically the cheapest month to fly

From CA $176 - CA $628 per traveller.

Graph displaying average flight prices per month

Flight from Baltimore to St. Louis (BWI - STL) route information
Origin airport
Baltimore Washington Intl. Thurgood Marshall
Destination airport
Lambert-St. Louis Intl.
Airlines serving
American Airlines, Delta
Roundtrip price
CA $308
Distance
1177 km
Average flight time
1 hour 13 mins

Baltimore to St. Louis Flights

The easy way to book your flights from Baltimore to St. Louis 

With Expedia, it’s simple to find and book flights to St. Louis from Baltimore whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to Lambert-St. Louis Intl., too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Baltimore to St. Louis today, tomorrow, or this week.  

 

Save dollars with cheap flights from Baltimore Washington Intl. Thurgood Marshall, BWI to Lambert-St. Louis Intl., STL 

Sort your search results by price to find great deals on your flight from Baltimore to St. Louis—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to St. Louis from Baltimore currently is just CA $308 rising to CA $495.  

Here are more money-saving tips: 

  • Fly in September when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to St. Louis  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to St. Louis from Baltimore 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to St. Louis with Expedia today.

Frequently asked questions

How much is a flight from BWI Marshall to Lambert Field?
If you're travelling between Baltimore Washington Intl. Thurgood Marshall Airport (BWI) and STL, round-trip journeys start from CA $308. This price is based on fares advertised within the last 7 days on Expedia for flights departing within the next year, so don't let a good deal pass you by. Book today and save yourself money and time. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from BWI to Lambert Field?
Every air carrier has its own terms and conditions. If you decide to cancel your escape, head to our Customer Service Portal.
How do I find cheap flights from BWI Marshall to Lambert-St. Louis Intl. Airport (STL) that have flexible change policies?
Flights from BWI Airport to STL with flexible change policies are available with many airlines. Simply use our "No change fees" filter when searching. You'll only need to pay the cost difference between the two flights, with no extra fees to worry about.
How many hours is the flight from BWI Marshall to Lambert Field?
It only takes roughly 5 hours and 30 minutes to fly from BWI Airport to STL — perfect for forty winks. You'll be starting your descent into St. Louis by the time you wake up.
How far is the flight from BWI Airport to Lambert Field?
You can forget about a movie marathon on this flight — it's only 1,200 kilometres from Baltimore to St. Louis. Find your way to your seat, enjoy the in-flight service and you'll be touching down in no time.
Which airlines fly direct from BWI Airport to STL?
A popular option with many frequent flyers, Southwest Airlines (WN) operates 73 monthly flights from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Lambert-St. Louis Intl. Airport (STL). Pick the one that fits with your travel plans and book your seat today.
Are Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Lambert-St. Louis Intl. Airport (STL) flight tickets cheaper when they're purchased at the last minute?
Booking your trip from BWI to Lambert Field last minute could be your ticket to a cheap deal. However, it could end up costing a great deal more! If you'd rather not take any chances, book well ahead of your departure date. In fact, Expedia has some of the biggest bargains up to a year in advance. If your preferred air carrier hasn't released tickets yet, check back frequently as deals are updated on Expedia all the time.

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