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St. Louis

$72+ 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 10/9. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — STL
Aug 25 — Sep 11
Mon 8/25
Mon 9/1
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 August 20, 2025.

Round-trip from

$143
(CheapOair)

One-way from

$72
(CheapOair)

Popular in

March

Cheapest in

August

Average price

$277

Good round-trip deal

$244 or less

Good one-way deal

$178 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 ($30 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in August 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 August 20, 2025.

This CheapOair deal was found by Cheapflights users on 8/18. 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 9/710:13 amBWI - STL
1 stop27h 49mFrontier
Mon 9/224:00 pmSTL - BWI
1 stop7h 17mFrontier
Deal found 8/18$143
This CheapOair deal was found by Cheapflights users on 8/18. 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 9/116:22 amBWI - STL
1 stop9h 42mFrontier
Sun 9/1410:39 amSTL - BWI
1 stop6h 21mFrontier
Deal found 8/18$149
This CheapOair deal was found by Cheapflights users on 8/19. 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 9/196:27 pmBWI - STL
1 stop15h 39mFrontier
Mon 9/224:00 pmSTL - BWI
1 stop7h 17mFrontier
Deal found 8/19$153
This CheapOair deal was found by Cheapflights users on 8/17. 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 10/176:29 pmBWI - STL
1 stop15h 38mFrontier
Mon 10/206:05 pmSTL - BWI
1 stop15h 15mFrontier
Deal found 8/17$154
This CheapOair deal was found by Cheapflights users on 8/19. 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 9/126:27 pmBWI - STL
1 stop15h 39mFrontier
Sun 9/1410:39 amSTL - BWI
1 stop6h 21mFrontier
Deal found 8/19$160
This CheapOair deal was found by Cheapflights users on 8/19. 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 9/289:27 pmBWI - STL
1 stop16h 35mFrontier
Mon 9/294:00 pmSTL - BWI
1 stop7h 17mFrontier
Deal found 8/19$162
This CheapOair deal was found by Cheapflights users on 8/18. 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 10/308:21 pmBWI - STL
1 stop17h 56mFrontier
Mon 11/32:12 pmSTL - BWI
1 stop19h 08mFrontier
Deal found 8/18$164
This FlightHub deal was found by Cheapflights users on 8/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/166:05 amBWI - STL
1 stop5h 32mFrontier
Sun 10/1911:32 amSTL - BWI
1 stop20h 33mFrontier
Deal found 8/18$165
This FlightHub deal was found by Cheapflights users on 8/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/62:21 pmBWI - STL
1 stop20h 33mFrontier
Fri 9/191:57 pmSTL - BWI
1 stop24h 32mFrontier
Deal found 8/18$166
This FlightHub deal was found by Cheapflights users on 8/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/276:29 pmBWI - STL
1 stop15h 38mFrontier
Thu 10/3011:07 amSTL - BWI
1 stop12h 00mFrontier
Deal found 8/18$170
This FlightHub deal was found by Cheapflights users on 8/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/158:45 amBWI - STL
1 stop26h 52mFrontier
Sun 10/1911:32 amSTL - BWI
1 stop20h 33mFrontier
Deal found 8/18$171
This CheapOair deal was found by Cheapflights users on 8/19. 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 9/266:27 pmBWI - STL
1 stop15h 39mFrontier
Mon 9/294:00 pmSTL - BWI
1 stop7h 17mFrontier
Deal found 8/19$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 August 20, 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

Mon 9/8

6:22 am-3:04 pm

1 stop9h 42m

Lambert-St Louis

Thu 9/11

4:00 pm-12:17 am

1 stop7h 17m

$143

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Sat 9/13

4:24 pm-1:07 pm

1 stop21h 43m

Lambert-St Louis

Mon 9/22

4:00 pm-12:17 am

1 stop7h 17m

$143

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Sun 10/5

9:52 pm-8:37 pm

1 stop23h 45m

Lambert-St Louis

Fri 10/31

4:52 pm-12:13 am

1 stop6h 21m

$143

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Thu 10/23

6:05 am-10:37 am

1 stop5h 32m

Lambert-St Louis

Mon 10/27

6:05 pm-10:20 am

1 stop15h 15m

$143

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Sun 9/7

10:13 am-1:02 pm

1 stop27h 49m

Lambert-St Louis

Sun 9/21

4:00 pm-12:17 am

1 stop7h 17m

$143

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Thu 9/4

9:37 pm-1:02 pm

1 stop16h 25m

Lambert-St Louis

Sun 9/7

4:00 pm-12:17 am

1 stop7h 17m

$143

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Thu 9/4

6:22 am-3:04 pm

1 stop9h 42m

Lambert-St Louis

Fri 9/5

1:57 pm-3:29 pm

1 stop24h 32m

$143

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Mon 9/15

6:22 am-3:04 pm

1 stop9h 42m

Lambert-St Louis

Mon 9/22

4:00 pm-12:17 am

1 stop7h 17m

$143

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Sun 9/7

10:13 am-1:02 pm

1 stop27h 49m

Lambert-St Louis

Mon 9/22

4:00 pm-12:17 am

1 stop7h 17m

$143

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Sun 10/5

9:52 pm-8:37 pm

1 stop23h 45m

Lambert-St Louis

Sat 10/11

4:33 pm-8:34 am

1 stop15h 01m

$143

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/19

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 August 20, 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 $200, Frontier can have you in St. Louis from Maryland in 6h 46m. The distance from Maryland to St. Louis is about 811 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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, Philadelphia - 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 $292 for a flight from Maryland to St. Louis. The cheapest flight overall is $108 while the most popular route, (Washington, D.C. Dulles Intl - Lambert-St Louis) is currently priced at $213.

  • 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
O'Fallon
Fairview Heights
Maryland Heights
Collinsville
Eureka
St. Peters
Glencoe
Alton
Chesterfield
Farmington
Festus

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Alternative routes for Maryland to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
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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 August 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$108Average$180FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$158Average$272FlexibilityNo cancel feeOn-time71%
DeltaCheapest$169Average$212FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$202Average$377FlexibilityNo cancel feeOn-time63%

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