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$55+ Cheap flights from St. Louis (STL) to Maryland

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 8/18. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BWI
ago. 4 — ago. 111
lun. 8/4
lun. 8/11
1 adult, Economy
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Cheap flight deals from St. Louis to Maryland

Keep the following information in mind while searching for St. Louis to Maryland flight deals. Data was last updated julio 30, 2025.

Round-trip from

$127
(CheapOair)

One-way from

$55
(Booking.com)

Popular in

March

Cheapest in

August

Average price

$309

Good round-trip deal

$273 or less

Good one-way deal

$179 or less
From Lambert-St Louis to Maryland
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One-way flight from Lambert-St Louis to Maryland
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Highest demand for flights based on searches. 10% potential increase in price ($32 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 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 Lambert-St Louis to Maryland.
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Price to beat on a one-way flight from Lambert-St Louis to Maryland.
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Find flight deals from St. Louis to Maryland

Cheapest flights from St. Louis to Maryland
Explore the most affordable flight options available from St. Louis to Maryland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 30, 2025.

This CheapOair deal was found by Cheapflights users on 7/28. 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.
jue. 8/212:30 pmSTL - PHL
1 stop5h 19mSpirit Airlines
jue. 8/287:00 amPHL - STL
1 stop7h 32mSpirit Airlines
Deal found 7/28$127
This FlightHub deal was found by Cheapflights users on 7/28. 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.
jue. 8/142:30 pmSTL - BWI
1 stop6h 39mSpirit Airlines
dom. 8/172:30 pmBWI - STL
1 stop24h 02mSpirit Airlines
Deal found 7/28$145
This CheapOair deal was found by Cheapflights users on 7/28. 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.
lun. 8/182:30 pmSTL - PHL
1 stop5h 19mMultiple Airlines
mié. 8/208:02 pmPHL - STL
1 stop18h 05mMultiple Airlines
Deal found 7/28$178
This Mytrip deal was found by Cheapflights users on 7/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/412:05 pmSTL - BWI
1 stop9h 23mMultiple Airlines
dom. 9/79:27 pmBWI - STL
1 stop16h 35mMultiple Airlines
Deal found 7/29$185
This Frontier deal was found by Cheapflights users on 7/28. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 8/162:52 pmSTL - BWI
1 stop8h 07mFrontier
sáb. 8/236:50 amBWI - STL
1 stop7h 43mFrontier
Deal found 7/28$198
This Frontier deal was found by Cheapflights users on 7/28. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 8/162:52 pmSTL - IAD
1 stop7h 34mFrontier
sáb. 8/236:10 amIAD - STL
1 stop8h 23mFrontier
Deal found 7/28$198
This Cheapflightsfares deal was found by Cheapflights users on 7/29. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/45:11 pmSTL - PHL
1 stop6h 27mFrontier
lun. 12/84:12 pmPHL - STL
1 stop7h 34mFrontier
Deal found 7/29$215
This American Airlines deal was found by Cheapflights users on 7/30. 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.
mié. 11/56:07 amSTL - DCA
Nonstop2h 12mAmerican Airlines
sáb. 11/83:54 pmDCA - STL
Nonstop2h 27mAmerican Airlines
Deal found 7/30$217
This American Airlines deal was found by Cheapflights users on 7/27. 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.
mar. 8/266:00 amSTL - PHL
Nonstop2h 18mAmerican Airlines
mar. 9/27:05 pmPHL - STL
Nonstop2h 42mAmerican Airlines
Deal found 7/27$217
This FlightHub deal was found by Cheapflights users on 7/30. 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.
mié. 8/67:29 pmSTL - DCA
1 stop15h 35mFrontier
sáb. 10/186:00 pmDCA - STL
1 stop16h 07mFrontier
Deal found 7/30$225
This Southwest deal was found by Cheapflights users on 7/29. 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.
mié. 8/207:20 pmSTL - DCA
Nonstop2h 05mSouthwest
sáb. 8/232:30 pmDCA - STL
1 stop6h 15mSouthwest
Deal found 7/29$227
This Delta deal was found by Cheapflights users on 7/28. 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.
sáb. 10/113:59 pmSTL - BWI
1 stop4h 05mDelta
mar. 10/146:00 amBWI - STL
1 stop5h 26mDelta
Deal found 7/28$227

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Maryland 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 julio 30, 2025.
Use the filters below to find and compare flights from St. Louis to Maryland that are best for you.

Fly from

St. Louis

Fly to

Maryland

Route

Depart

Return

Price

St. LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

jue. 8/21

2:30 pm-8:49 pm

1 stop5h 19m

Philadelphia

jue. 8/28

7:00 am-1:32 pm

1 stop7h 32m

$127

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

jue. 8/14

2:30 pm-10:09 pm

1 stop6h 39m

Baltimore/Washington

dom. 8/17

2:30 pm-1:32 pm

1 stop24h 02m

$145

St. LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

lun. 8/18

2:30 pm-8:49 pm

1 stop5h 19m

Philadelphia

mié. 8/20

8:02 pm-1:07 pm

1 stop18h 05m

$178

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

jue. 9/4

12:05 pm-10:28 pm

1 stop9h 23m

Baltimore/Washington

dom. 9/7

9:27 pm-1:02 pm

1 stop16h 35m

$185

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

sáb. 8/16

2:52 pm-11:59 pm

1 stop8h 07m

Baltimore/Washington

sáb. 8/23

6:50 am-1:33 pm

1 stop7h 43m

$198

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

sáb. 8/16

2:52 pm-11:26 pm

1 stop7h 34m

Washington, D.C. Dulles Intl

sáb. 8/23

6:10 am-1:33 pm

1 stop8h 23m

$198

St. LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

lun. 8/4

5:40 pm-1:09 am

1 stop6h 29m

Philadelphia

mar. 8/5

5:30 pm-11:47 pm

1 stop7h 17m

$216

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

mié. 8/20

10:10 am-1:14 pm

Nonstop2h 04m

Washington, D.C. Reagan-National

sáb. 8/23

2:56 pm-4:14 pm

Nonstop2h 18m

$217

St. LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

mar. 8/26

6:00 am-9:18 am

Nonstop2h 18m

Philadelphia

mar. 9/2

7:05 pm-8:47 pm

Nonstop2h 42m

$217

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

mié. 8/6

7:29 pm-12:04 pm

1 stop15h 35m

Washington, D.C. Reagan-National

sáb. 10/18

6:00 pm-9:07 am

1 stop16h 07m

$225

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 42 results
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Best time to book a flight from St. Louis to Maryland

Have a flexible travel schedule? Discover the best time to fly to Maryland from St. Louis 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 St. Louis to Maryland

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

Currently, August is the cheapest month in which you can book a flight from St. Louis to Maryland (average of $241). Flying from St. Louis to Maryland in March is currently the most expensive (average of $290). 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 STL to MD?

Find hourly flight availability from St. Louis to Maryland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated julio 30, 2025.

When flying from St. Louis to Maryland, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Maryland

Get insights into the airlines that provide service to Maryland. 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 Maryland. Reviews last updated julio 30, 2025.
Get a feel of what it's like to fly with Southwest, Delta, and United Airlines from St. Louis to Maryland by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,241 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Southwest
8.0
Very good
4,241 reviews
Southwest
8.0
Very good
4,241 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Delta
8.0
Very good
7,980 reviews
Southwest
8.0
Very good
4,241 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
United Airlines
7.4
Good
8,896 reviews
Southwest
8.0
Very good
4,241 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,241 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Spirit Airlines
6.3
Okay
8,048 reviews
Southwest
8.0
Very good
4,241 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Maryland. 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 from for flights from St. Louis to Maryland?

    For a flight from St. Louis to Maryland, you will be flying from Lambert-St Louis. Lambert-St Louis (STL) is just 12.7 mi from the center of the city.

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

    The Lambert-St Louis to Maryland flight path was viewed by 26 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    The cheapest airlines for a one-way flight from St. Louis to Maryland are Spirit Airlines ($55), Frontier ($99), and American Airlines ($109).

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

    Most travelers choose Lambert-St Louis - Washington, D.C. Dulles Intl, Lambert-St Louis - Baltimore/Washington or Lambert-St Louis - Philadelphia when deciding on the best route from St. Louis to Maryland.

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

    On average you can expect to pay $329 for a flight from St. Louis to Maryland. The cheapest flight overall is $108 while the most popular route, (Lambert-St Louis - Washington, D.C. Dulles Intl) is currently priced at $225.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from St. Louis to Maryland 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 St. Louis to Maryland?

    Currently, August is the cheapest month in which you can book a flight from St. Louis to Maryland (average of $241). Flying from St. Louis to Maryland in March is currently the most expensive (average of $290). 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

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Alternative routes for St. Louis to Maryland

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from St. Louis to Maryland

Discover the top 4 airlines that operate flights from St. Louis to Maryland. 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 julio 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$124Average$221FlexibilityNo cancel feeOn-time62%
DeltaCheapest$176Average$290FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$196Average$372FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$197Average$373FlexibilityNo cancel feeOn-time63%

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