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$65+ 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 1/18. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BWI
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
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 September 15, 2025.

Round-trip from

$143
(Priceline)

One-way from

$65
(American Airlines)

Popular in

March

Cheapest in

August

Average price

$341

Good round-trip deal

$275 or less

Good one-way deal

$199 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. 7% potential increase in price ($26 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 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 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 September 15, 2025.

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 10/64:00 pmSTL - PHL
1 stop7h 59mFrontier
Thu 10/95:20 amPHL - STL
1 stop6h 17mFrontier
Deal found 9/15$143
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.
Thu 9/2510:49 amSTL - BWI
1 stop6h 04mFrontier
Mon 9/296:22 amBWI - STL
1 stop9h 42mFrontier
Deal found 9/15$143
This Booking.com deal was found by Cheapflights users on 9/13. 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 10/237:52 pmSTL - BWI
1 stop20h 52mFrontier
Mon 10/276:29 pmBWI - STL
1 stop15h 38mFrontier
Deal found 9/13$145
This Frontier deal was found by Cheapflights users on 9/12. 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.
Fri 11/144:56 pmSTL - BWI
1 stop6h 17mFrontier
Sun 11/165:50 amBWI - STL
1 stop5h 22mFrontier
Deal found 9/12$149
This Priceline 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/67:45 pmSTL - PHL
1 stop8h 04mFrontier
Sun 11/95:50 amPHL - STL
1 stop5h 22mFrontier
Deal found 9/14$153
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1412:51 pmSTL - BWI
1 stop6h 57mAmerican Airlines
Wed 10/156:13 pmBWI - STL
1 stop6h 41mAmerican Airlines
Deal found 9/14$158
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/205:00 amSTL - BWI
1 stop4h 58mAmerican Airlines
Sat 11/228:21 pmBWI - STL
1 stop4h 44mAmerican Airlines
Deal found 9/14$159
This Booking.com deal was found by Cheapflights users on 9/13. 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.
Sat 10/184:33 pmSTL - BWI
1 stop15h 01mFrontier
Mon 10/206:29 pmBWI - STL
1 stop15h 38mFrontier
Deal found 9/13$160
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/254:00 pmSTL - PHL
1 stop7h 57mFrontier
Sun 9/285:15 amPHL - STL
1 stop10h 49mFrontier
Deal found 9/14$161
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/306:22 pmSTL - PHL
1 stop21h 04mFrontier
Thu 11/67:10 amPHL - STL
1 stop11h 17mFrontier
Deal found 9/15$162
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.
Mon 10/139:06 pmSTL - PHL
1 stop18h 19mFrontier
Wed 10/155:53 pmPHL - STL
1 stop17h 44mFrontier
Deal found 9/14$163
This Flightnetwork deal was found by Cheapflights users on 9/13. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/139:06 pmSTL - BWI
1 stop12h 14mFrontier
Mon 10/206:29 pmBWI - STL
1 stop15h 38mFrontier
Deal found 9/13$165

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 September 15, 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

Fri 10/10

6:05 pm-1:07 am

1 stop6h 02m

Philadelphia

Sun 10/12

5:05 am-12:46 pm

1 stop8h 41m

$143

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Thu 10/23

7:52 pm-5:44 pm

1 stop20h 52m

Baltimore/Washington

Mon 10/27

6:29 pm-9:07 am

1 stop15h 38m

$145

St. LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Sat 10/11

7:15 pm-9:32 am

1 stop13h 17m

Philadelphia

Sat 10/18

5:33 am-6:10 pm

1 stop13h 37m

$177

St. LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Mon 9/22

4:00 pm-12:57 am

1 stop7h 57m

Philadelphia

Sat 9/27

6:37 pm-3:04 pm

1 stop21h 27m

$179

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

Wed 11/12

7:45 pm-12:04 pm

1 stop15h 19m

Washington, D.C. Reagan-National

Mon 11/17

6:00 pm-9:07 am

1 stop16h 07m

$193

St. LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Thu 10/9

11:32 am-12:59 am

1 stop12h 27m

Philadelphia

Sun 10/12

5:05 am-12:46 pm

1 stop8h 41m

$195

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

Tue 11/11

7:05 am-12:41 pm

1 stop4h 36m

Washington, D.C. Reagan-National

Wed 11/19

6:06 am-9:46 am

1 stop4h 40m

$197

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

Sat 11/8

8:43 am-11:55 am

Nonstop2h 12m

Washington, D.C. Reagan-National

Tue 11/11

7:50 am-9:20 am

Nonstop2h 30m

$197

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

Mon 11/10

6:09 pm-11:04 pm

1 stop3h 55m

Washington, D.C. Reagan-National

Sun 11/16

6:06 am-9:46 am

1 stop4h 40m

$197

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

Mon 11/10

6:09 pm-11:04 pm

1 stop3h 55m

Washington, D.C. Reagan-National

Sat 11/15

8:00 am-12:26 pm

1 stop5h 26m

$197

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 60 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 September 15, 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 September 15, 2025.
Get a feel of what it's like to fly with Southwest, Delta, and American 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
4,242 reviews

Crew

8.6

Comfort

8.0

Food

7.0

Entertainment

7.5

Overall

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Crew

8.6

Comfort

8.0

Food

7.0

Entertainment

7.5

Overall

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
8.0
Very good
7,954 reviews
Southwest
8.0
Very good
4,242 reviews

Crew

8.6

Comfort

8.0

Food

7.0

Entertainment

7.5

Overall

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,242 reviews

Crew

8.6

Comfort

8.0

Food

7.0

Entertainment

7.5

Overall

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,172 reviews
Southwest
8.0
Very good
4,242 reviews

Crew

8.6

Comfort

8.0

Food

7.0

Entertainment

7.5

Overall

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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 30 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    Airlines like Frontier, Spirit Airlines, and Delta fly from St. Louis to Maryland in about 4h 36m. The time it takes to get you to your destination can typically vary by up to 8h 41m. Airlines will cover a distance of 717 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 St. Louis to Maryland one-way?

    The cheapest airlines for a one-way flight from St. Louis to Maryland are American Airlines ($66), United Airlines ($76), and Southwest ($84).

  • 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 - Washington, D.C. Reagan-National or Lambert-St Louis - Baltimore/Washington 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 $370 for a flight from St. Louis to Maryland. The cheapest flight overall is $99 while the most popular route, (Lambert-St Louis - Washington, D.C. Dulles Intl) is currently priced at $197.

  • 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$124Average$218FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$196Average$376FlexibilityNo cancel feeOn-time71%
DeltaCheapest$196Average$277FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$200Average$370FlexibilityNo cancel feeOn-time63%

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