CA $190 Cheap Flights from Baltimore (BWI) to St. Louis (STL)

You can find one-way and return flights from BWI to STL with Expedia. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see our cheapest fares first, and use the Price Tracking tool to receive alerts when BWI to STL ticket fares go up or down.

The cheapest months to fly from Baltimore, MD (BWI) to St. Louis, MO (STL) are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.

Only one airline offers direct flights from Baltimore Washington Intl. Thurgood Marshall (BWI) to Lambert-St. Louis Intl. (STL). Southwest Airlines operates 28 direct flights from BWI to STL every week.

To find a cheap flight from Baltimore, MD (BWI) to St. Louis, MO (STL), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.

The best airline to fly with from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to St. Louis, MO (STL-Lambert-St. Louis Intl.) will differ from traveler to traveler. If you like to fly early, Southwest Airlines offers early morning flights. If price is the most important factor, Southwest Airlines typically offers the lowest fares. Southwest Airlines offers the most daily flights from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to St. Louis, MO (STL-Lambert-St. Louis Intl.), which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.

The best time to fly from Baltimore Washington International Thurgood Marshall (BWI) to Lambert-St. Louis International (STL) is typically September or May. These months offer a great balance—prices are reasonable at around CA$420 for a return flight, and you'll have plenty of flight options since they're popular times to travel. If you're flexible, these months give you both affordable fares and excellent flight schedules to work with.

You'll find around 4 nonstop flights per day from Baltimore Washington Intl. Thurgood Marshall (BWI) to Lambert-St. Louis Intl. (STL). For even more choices, look at flights that include layovers, as there are approximately 138 connecting flights per day. Some common connection points include O'Hare Intl. (ORD), Hartsfield-Jackson Atlanta Intl. (ATL), and Orlando Intl. (MCO).

The earliest flight from Baltimore Washington Intl. Thurgood Marshall (BWI) to Lambert-St. Louis Intl. (STL) typically departs around 5:00 AM. This flight is operated by American Airlines. This is a seasonal service, active only in December. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.

You'll typically find the most flights from Baltimore Washington Intl. Thurgood Marshall (BWI) to Lambert-St. Louis Intl. (STL) on a Friday, with around 76 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include Southwest Airlines, Delta, and American Airlines. Fridays offer notably more flight options compared to other days of the week, making it a great day to consider for your journey.

The most popular departure times for flights from Baltimore Washington Intl. Thurgood Marshall (BWI) to Lambert-St. Louis Intl. (STL) are in the early morning, from 6am to 9am. Many major carriers, including Southwest Airlines, Delta and United, offer flights during this window. Many travellers prefer this because it allows for an early start to their day in St. Louis.

A non-stop flight from Baltimore Washington Intl. Thurgood Marshall (BWI) to Lambert-St. Louis Intl. (STL) typically takes around 2 hours 18 minutes, covering a distance of approximately 1,184 kilometers. If you opt for a one-stop flight, your journey will usually take longer, averaging about 7 hours. Flights with two or more stops will extend your travel time further, typically to around 9 hours 48 minutes. Keep in mind that actual flight times can vary due to factors like wind patterns and air traffic.

Yes, you can fly business class or first class between BWI and STL. Airlines that offer business class service on this route include:

* Frontier Airlines
* Delta

First class cabins are available on Alaska Airlines, Delta, United, and American Airlines.

It's easy to earn miles on a Baltimore, MD (BWI) to St. Louis, MO (STL) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.

*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.

If you're planning to travel to St. Louis from Baltimore Washington Intl. Thurgood Marshall (BWI), you can fly directly into Lambert-St. Louis Intl. (STL). Some flights may connect through major hubs like Myrtle Beach International Airport (MYR), Charlotte-Douglas Intl. (CLT), or Buffalo Niagara Intl. (BUF) before reaching St. Louis. Compare routes and airports on Expedia to find the best flight options for your travel plans.

Typically, booking a last minute flight from Baltimore, MD (BWI) to St. Louis, MO (STL) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.

Securing a Baltimore, MD (BWI) to St. Louis, MO (STL) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.

If you booked your Baltimore, MD (BWI) to St. Louis, MO (STL) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.