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St. Louis

$66+ Cheap flights from Maryland to St. Louis (STL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/21. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — STL
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap flight deals from Maryland to St. Louis

Keep the following information in mind while searching for Maryland to St. Louis flight deals. Data was last updated September 17, 2025.

Round-trip from

$143
(CheapOair)

One-way from

$66
(American Airlines)

Popular in

March

Cheapest in

August

Average price

$317

Good round-trip deal

$286 or less

Good one-way deal

$202 or less
From Maryland to Lambert-St Louis
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One-way flight from Maryland to Lambert-St Louis
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Highest demand for flights based on searches. 8% potential increase in price ($29 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Maryland to Lambert-St Louis.
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Price to beat on a one-way flight from Maryland to Lambert-St Louis.
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Find flight deals from Maryland to St. Louis

Cheapest flights from Maryland to St. Louis
Explore the most affordable flight options available from Maryland to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

This CheapOair deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/26:22 amBWI - STL
1 stop9h 42mFrontier
Fri 10/39:32 pmSTL - BWI
1 stop16h 45mFrontier
Deal found 9/15$143
This CheapOair deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/176:09 pmBWI - STL
1 stop24h 53mFrontier
Mon 10/276:05 pmSTL - BWI
1 stop15h 15mFrontier
Deal found 9/14$144
This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/216:29 amBWI - STL
1 stop5h 20mUnited Airlines
Tue 10/213:23 pmSTL - BWI
1 stop4h 59mUnited Airlines
Deal found 9/15$151
This CheapOair deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/96:05 amBWI - STL
1 stop5h 32mFrontier
Sun 10/121:41 pmSTL - BWI
1 stop17h 53mFrontier
Deal found 9/15$157
This CheapOair deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/106:09 pmBWI - STL
1 stop24h 53mFrontier
Mon 10/139:06 pmSTL - BWI
1 stop12h 14mFrontier
Deal found 9/15$158
This American Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/86:13 pmBWI - STL
1 stop6h 41mAmerican Airlines
Sat 10/114:25 pmSTL - BWI
1 stop4h 29mAmerican Airlines
Deal found 9/15$159
This CheapOair deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/75:50 amBWI - STL
1 stop11h 11mFrontier
Sun 11/911:23 amSTL - BWI
1 stop19h 55mFrontier
Deal found 9/15$163
This CheapOair deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/286:22 amBWI - STL
1 stop9h 42mFrontier
Mon 9/294:00 pmSTL - BWI
1 stop26h 07mFrontier
Deal found 9/15$168
This CheapOair deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1110:16 amBWI - STL
1 stop27h 30mFrontier
Thu 10/1610:17 amSTL - BWI
1 stop23h 01mFrontier
Deal found 9/15$169
This Priceline deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/66:22 amBWI - STL
1 stop9h 42mMultiple Airlines
Thu 10/910:57 amSTL - BWI
1 stop9h 21mMultiple Airlines
Deal found 9/15$170
This Booking.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/26:22 amBWI - STL
1 stop9h 42mFrontier
Thu 10/27:55 pmSTL - BWI
1 stop20h 47mFrontier
Deal found 9/16$171
This CheapOair deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/106:09 pmBWI - STL
1 stop24h 53mFrontier
Sun 10/126:05 pmSTL - BWI
1 stop13h 29mFrontier
Deal found 9/15$172

Cheapflights Fare Finder

 
Customize your flight search to find flights from Maryland to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 17, 2025.
Use the filters below to find and compare flights from Maryland to St. Louis that are best for you.

Fly from

Maryland

Fly to

St. Louis

Route

Depart

Return

Price

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Tue 10/21

6:29 am-10:49 am

1 stop5h 20m

Lambert-St Louis

Tue 10/21

3:23 pm-9:22 pm

1 stop4h 59m

$151

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Tue 11/4

4:44 pm-10:04 pm

1 stop6h 20m

Lambert-St Louis

Fri 11/7

5:15 pm-12:41 am

1 stop6h 26m

$197

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Sat 10/11

6:00 am-9:15 am

1 stop4h 15m

Lambert-St Louis

Wed 10/15

9:10 am-5:17 pm

1 stop7h 07m

$197

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Sun 10/5

7:00 am-9:06 am

1 stop27h 06m

Lambert-St Louis

Wed 10/8

7:52 pm-9:59 pm

1 stop25h 07m

$244

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Fri 11/21

10:56 am-2:25 pm

1 stop4h 29m

Lambert-St Louis

Mon 11/24

10:00 am-5:14 pm

1 stop6h 14m

$256

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Tue 10/14

7:05 am-12:35 pm

1 stop6h 30m

Lambert-St Louis

Tue 10/21

6:00 am-11:21 am

1 stop4h 21m

$257

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Tue 10/7

8:05 am-12:35 pm

1 stop5h 30m

Lambert-St Louis

Wed 10/8

9:10 am-5:17 pm

1 stop7h 07m

$257

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Tue 10/7

7:05 am-12:35 pm

1 stop6h 30m

Lambert-St Louis

Tue 10/7

6:14 pm-11:02 pm

1 stop3h 48m

$257

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Wed 11/12

12:25 pm-1:45 pm

Nonstop2h 20m

Lambert-St Louis

Sat 11/15

3:30 pm-6:25 pm

Nonstop1h 55m

$260

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Tue 10/28

8:37 am-10:24 am

Nonstop2h 47m

Lambert-St Louis

Fri 10/31

10:54 am-1:59 pm

Nonstop2h 05m

$260

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 60 results
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Best time to book a flight from Maryland to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Maryland with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Maryland to St. Louis

What is the cheapest month to book a flight from Maryland to St. Louis?

Currently, August is the cheapest month in which you can book a flight from Maryland to St. Louis (average of $311). Flying from Maryland to St. Louis in March is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from MD to STL?

Find hourly flight availability from Maryland to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Maryland to St. Louis as you normally would.

Related info for your journey

Find useful and relevant information for your journey from Maryland to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to St. Louis from Maryland?

    Most people fly into Lambert-St Louis (STL) if they book a flight to St. Louis from Maryland. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.

  • How popular is this Maryland to St. Louis flight route?

    Flights from Maryland to Lambert-St Louis have been viewed 20 times in the past calendar month.

  • How long is the flight from Maryland to St. Louis?

    For as low as $151, United Airlines can have you in St. Louis from Maryland in 5h 20m. The distance from Maryland to St. Louis is about 736 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Maryland to St. Louis one-way?

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $72. However, be on the lookout for offers from United Airlines and Spirit Airlines, as they are both options that can get you from Maryland to St. Louis for a low price.

  • What are the most popular routes from Maryland to St. Louis?

    The most popular flight routes from Maryland to St. Louis are Washington, D.C. Dulles Intl - Lambert-St Louis, Washington, D.C. Reagan-National - Lambert-St Louis and Baltimore/Washington - Lambert-St Louis.

  • What are the cheapest flights from Maryland to St. Louis?

    On average you can expect to pay $298 for a flight from Maryland to St. Louis. The cheapest flight overall is $96 while the most popular route, (Washington, D.C. Dulles Intl - Lambert-St Louis) is currently priced at $197.

  • Can I find deals for flights from Maryland to St. Louis that include hotel bookings?

    Yes. In addition to deals on Maryland to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Maryland to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Maryland to St. Louis.

  • Can I find deals for business class flights from Maryland to St. Louis?

    Yes. Cheapflights offers flight deals from Maryland to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Maryland to St. Louis?

    Currently, August is the cheapest month in which you can book a flight from Maryland to St. Louis (average of $311). Flying from Maryland to St. Louis in March is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
St. Peters
Chesterfield
Alton
Farmington
Festus

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Alternative routes for Maryland to St. Louis

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Top 4 airlines flying from Maryland to St. Louis

Discover the top 4 airlines that operate flights from Maryland to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$109Average$179FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$167Average$277FlexibilityNo cancel feeOn-time71%
DeltaCheapest$169Average$212FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$199Average$373FlexibilityNo cancel feeOn-time63%

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