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$48+ 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 7/19. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — STL
Jul 7 — Jul 141
Mon 7/7
Mon 7/14
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 July 2, 2025.

Round-trip from

$109
(Priceline)

One-way from

$48
(Priceline)

Popular in

March

Cheapest in

August

Average price

$321

Good round-trip deal

$318 or less

Good one-way deal

$183 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. 7% potential increase in price ($25 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 July 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 July 2, 2025.

This Priceline deal was found by Cheapflights users on 7/2. 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.
Sun 9/76:25 amBWI - STL
1 stop9h 39mFrontier
Mon 9/224:00 pmSTL - BWI
1 stop7h 17mFrontier
Deal found 7/2$109
This Priceline deal was found by Cheapflights users on 6/30. 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.
Thu 9/186:25 amBWI - STL
1 stop9h 39mMultiple Airlines
Sun 9/212:30 pmSTL - BWI
1 stop6h 38mMultiple Airlines
Deal found 6/30$136
This FlightHub deal was found by Cheapflights users on 7/1. 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 8/162:30 pmBWI - STL
1 stop24h 02mSpirit Airlines
Mon 8/182:30 pmSTL - BWI
1 stop6h 39mSpirit Airlines
Deal found 7/1$150
This American Airlines deal was found by Cheapflights users on 6/30. 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.
Tue 8/2612:22 pmBWI - STL
1 stop4h 27mAmerican Airlines
Wed 8/276:06 amSTL - BWI
1 stop4h 46mAmerican Airlines
Deal found 6/30$177
This Southwest deal was found by Cheapflights users on 6/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/146:20 amBWI - STL
Nonstop2h 10mSouthwest
Mon 8/189:05 amSTL - BWI
Nonstop2h 00mSouthwest
Deal found 6/30$197
This Southwest deal was found by Cheapflights users on 6/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/198:00 amDCA - STL
Nonstop2h 10mSouthwest
Thu 8/219:50 amSTL - DCA
1 stop4h 05mSouthwest
Deal found 6/30$203
This FlightHub deal was found by Cheapflights users on 6/30. 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.
Fri 8/225:37 pmIAD - STL
1 stop20h 56mFrontier
Mon 8/252:01 pmSTL - IAD
1 stop9h 15mFrontier
Deal found 6/30$207
This CheapOair deal was found by Cheapflights users on 6/30. 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 8/141:00 pmDCA - STL
1 stop21h 11mFrontier
Mon 8/187:29 pmSTL - DCA
1 stop20h 30mFrontier
Deal found 6/30$207
This Delta deal was found by Cheapflights users on 6/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2612:20 pmIAD - STL
1 stop4h 46mDelta
Wed 8/276:00 amSTL - IAD
1 stop4h 23mDelta
Deal found 6/30$217
This United Airlines deal was found by Cheapflights users on 6/30. 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 8/126:00 pmDCA - STL
1 stop5h 45mUnited Airlines
Tue 8/195:30 pmSTL - DCA
1 stop4h 13mUnited Airlines
Deal found 6/30$217
This United Airlines deal was found by Cheapflights users on 6/30. 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 9/238:40 amIAD - STL
Nonstop2h 22mUnited Airlines
Thu 9/2512:25 pmSTL - IAD
1 stop4h 12mUnited Airlines
Deal found 6/30$220
This American Airlines deal was found by Cheapflights users on 7/1. 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.
Thu 9/2511:31 amDCA - STL
Nonstop2h 20mAmerican Airlines
Mon 9/296:05 amSTL - DCA
1 stop7h 19mAmerican Airlines
Deal found 7/1$220

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 July 2, 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

Sun 9/7

6:25 am-3:04 pm

1 stop9h 39m

Lambert-St Louis

Mon 9/22

4:00 pm-12:17 am

1 stop7h 17m

$109

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Thu 9/18

6:25 am-3:04 pm

1 stop9h 39m

Lambert-St Louis

Sun 9/21

2:30 pm-10:08 pm

1 stop6h 38m

$136

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Sat 8/16

2:30 pm-1:32 pm

1 stop24h 02m

Lambert-St Louis

Mon 8/18

2:30 pm-10:09 pm

1 stop6h 39m

$150

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Tue 8/26

12:22 pm-3:49 pm

1 stop4h 27m

Lambert-St Louis

Wed 8/27

6:06 am-11:52 am

1 stop4h 46m

$177

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Thu 8/14

6:20 am-7:30 am

Nonstop2h 10m

Lambert-St Louis

Mon 8/18

9:05 am-12:05 pm

Nonstop2h 00m

$197

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Tue 8/19

8:00 am-9:10 am

Nonstop2h 10m

Lambert-St Louis

Thu 8/21

9:50 am-2:55 pm

1 stop4h 05m

$203

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Fri 8/22

5:37 pm-1:33 pm

1 stop20h 56m

Lambert-St Louis

Mon 8/25

2:01 pm-12:16 am

1 stop9h 15m

$207

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Thu 8/14

1:00 pm-9:11 am

1 stop21h 11m

Lambert-St Louis

Mon 8/18

7:29 pm-4:59 pm

1 stop20h 30m

$207

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Tue 8/26

12:20 pm-4:06 pm

1 stop4h 46m

Lambert-St Louis

Wed 8/27

6:00 am-11:23 am

1 stop4h 23m

$217

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Tue 8/12

6:00 pm-10:45 pm

1 stop5h 45m

Lambert-St Louis

Tue 8/19

5:30 pm-10:43 pm

1 stop4h 13m

$217

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

Showing 1-10 of 44 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 July 2, 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.

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated July 2, 2025.
See what other customers who have flown with Southwest, Delta, and United Airlines from Maryland to St. Louis have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,272 reviews

Crew

8.6

Comfort

8.0

Entertainment

7.6

Overall

8.0

Boarding

8.2

Food

7.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Southwest
8.0
Very good
4,272 reviews
Southwest
8.0
Very good
4,272 reviews

Crew

8.6

Comfort

8.0

Entertainment

7.6

Overall

8.0

Boarding

8.2

Food

7.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Delta
8.0
Very good
7,983 reviews
Southwest
8.0
Very good
4,272 reviews

Crew

8.6

Comfort

8.0

Entertainment

7.6

Overall

8.0

Boarding

8.2

Food

7.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
United Airlines
7.4
Good
8,861 reviews
Southwest
8.0
Very good
4,272 reviews

Crew

8.6

Comfort

8.0

Entertainment

7.6

Overall

8.0

Boarding

8.2

Food

7.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,272 reviews

Crew

8.6

Comfort

8.0

Entertainment

7.6

Overall

8.0

Boarding

8.2

Food

7.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Spirit Airlines
6.3
Okay
8,103 reviews
Southwest
8.0
Very good
4,272 reviews

Crew

8.6

Comfort

8.0

Entertainment

7.6

Overall

8.0

Boarding

8.2

Food

7.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

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 15 times in the past calendar month.

  • 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 $48. However, be on the lookout for offers from Spirit Airlines and American 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, Baltimore/Washington - Lambert-St Louis and Washington, D.C. Reagan-National - Lambert-St Louis.

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

    On average you can expect to pay $305 for a flight from Maryland to St. Louis. The cheapest flight overall is $148 while the most popular route, (Washington, D.C. Dulles Intl - Lambert-St Louis) is currently priced at $191.

  • 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 Maryland?

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

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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 July 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$108Average$221FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$158Average$280FlexibilityNo cancel feeOn-time71%
DeltaCheapest$169Average$227FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$201Average$377FlexibilityNo cancel feeOn-time63%

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