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$54+ 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 3/11. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BWI
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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Cheap 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 January 29, 2026.

This Expedia deal was found by Cheapflights users on 1/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/243:49 pm
STL
-
PHL
1 stop19h 33m
Frontier
Tue 3/311:03 am
PHL
-
STL
1 stop12h 24m
Frontier
Deal found 1/27$128
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/243:49 pm
STL
-
BWI
1 stop26h 41m
Frontier
Fri 2/276:08 pm
BWI
-
STL
1 stop13h 43m
Frontier
Deal found 1/28$134
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/258:17 pm
STL
-
BWI
1 stop19h 56m
Multiple Airlines
Wed 3/411:30 am
BWI
-
STL
1 stop11h 57m
Multiple Airlines
Deal found 1/28$135
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/253:49 pm
STL
-
PHL
1 stop18h 52m
Frontier
Mon 3/28:23 pm
PHL
-
STL
1 stop27h 04m
Frontier
Deal found 1/27$136
This Kiwi.com deal was found by Cheapflights users on 1/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/61:09 pm
STL
-
BWI
1 stop25h 49m
Frontier
Mon 3/95:31 am
BWI
-
STL
1 stop8h 48m
Frontier
Deal found 1/29$136
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/233:49 pm
STL
-
PHL
1 stop19h 50m
Multiple Airlines
Tue 2/247:46 pm
PHL
-
STL
1 stop27h 41m
Multiple Airlines
Deal found 1/27$140
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/243:49 pm
STL
-
PHL
1 stop26h 02m
Multiple Airlines
Sun 3/15:30 am
PHL
-
STL
1 stop26h 21m
Multiple Airlines
Deal found 1/28$143
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1811:32 am
STL
-
BWI
1 stop12h 09m
Frontier
Mon 3/233:19 pm
BWI
-
STL
1 stop20h 13m
Frontier
Deal found 1/27$144
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/243:49 pm
STL
-
PHL
1 stop19h 33m
Frontier
Tue 3/107:00 pm
PHL
-
STL
1 stop16h 37m
Frontier
Deal found 1/28$146
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/273:49 pm
STL
-
PHL
1 stop16h 17m
Multiple Airlines
Tue 3/38:06 am
PHL
-
STL
2 stops15h 21m
Multiple Airlines
Deal found 1/27$147
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/188:17 pm
STL
-
PHL
1 stop14h 01m
Frontier
Thu 2/197:12 pm
PHL
-
STL
1 stop12h 39m
Frontier
Deal found 1/27$151
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/98:22 pm
STL
-
PHL
1 stop14h 31m
Frontier
Tue 2/106:40 pm
PHL
-
STL
1 stop13h 11m
Frontier
Deal found 1/28$154

Find 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 January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$128
(Expedia)

One-way from

$54
(Trip.com)

Popular in

January

Cheapest in

August

Average price

$382

Good round-trip deal

$396 or less

Good one-way deal

$225 or less
Provider with most accurate pricing for Lambert-St Louis-Washington, D.C. (WAS) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Washington, D.C. (WAS) flights.
Search Deals
From Lambert-St Louis to Maryland
Search Deals
One-way flight from Lambert-St Louis to Maryland
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($39 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Lambert-St Louis to Maryland.
Search Deals
Price to beat on a one-way flight from Lambert-St Louis to Maryland.
Search Deals

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 January 29, 2026.
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

Tue 2/24

3:49 pm-12:22 pm

1 stop19h 33m

Philadelphia

Tue 3/10

7:00 pm-10:37 am

1 stop16h 37m

$146

St. LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Fri 2/27

3:49 pm-9:06 am

1 stop16h 17m

Philadelphia

Fri 3/6

8:25 pm-9:49 am

1 stop14h 24m

$165

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Mon 3/16

8:10 pm-3:28 pm

1 stop18h 18m

Baltimore/Washington

Fri 3/20

5:31 am-1:34 pm

1 stop9h 03m

$177

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Tue 3/17

4:51 pm-11:59 pm

1 stop6h 08m

Baltimore/Washington

Mon 3/23

3:19 pm-10:32 am

1 stop20h 13m

$178

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Fri 3/6

1:09 pm-12:31 am

1 stop10h 22m

Baltimore/Washington

Mon 3/9

9:43 pm-9:49 am

2 stops37h 06m

$179

St. LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Tue 2/24

3:49 pm-6:15 am

2 stops13h 26m

Philadelphia

Sun 3/1

5:30 am-6:51 am

1 stop26h 21m

$180

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Mon 3/9

2:09 pm-12:43 am

1 stop9h 34m

Baltimore/Washington

Thu 3/12

6:05 am-7:22 am

2 stops26h 17m

$183

St. LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Tue 3/31

11:27 am-10:08 pm

1 stop9h 41m

Philadelphia

Sun 4/5

5:01 am-10:30 am

1 stop6h 29m

$226

St. LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Fri 2/13

8:20 pm-11:18 am

1 stop13h 58m

Philadelphia

Wed 2/18

3:45 pm-10:27 pm

1 stop7h 42m

$232

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Sun 4/26

11:21 am-11:59 pm

2 stops11h 38m

Baltimore/Washington

Tue 4/28

6:00 pm-6:50 am

1 stop13h 50m

$274

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

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, January is the cheapest month in which you can book a flight from St. Louis to Maryland (average of $124). Flying from St. Louis to Maryland in November is currently the most expensive (average of $274). 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 January 29, 2026.

Unlike in the evening, when flights are generally more expensive, you can save up to 3% on flights from St. Louis to Maryland by exploring options for tickets in the afternoon.

What is the cheapest day to fly from St. Louis to Maryland?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Maryland. Price data was last updated on January 24, 2026.

Travelers seeking maximum savings on their St. Louis to Maryland flight should consider departing on Monday at noon when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 January 29, 2026.
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
4,267 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
8.0
Very good
4,267 reviews
Southwest
8.0
Very good
4,267 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Delta
7.9
Good
8,127 reviews
Southwest
8.0
Very good
4,267 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,206 reviews
Southwest
8.0
Very good
4,267 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Frontier
5.7
Fair
3,056 reviews
Southwest
8.0
Very good
4,267 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

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 32 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, Southwest, and United Airlines fly from St. Louis to Maryland in about 2h 10m. The time it takes to get you to your destination can typically vary by up to 17h 23m. Airlines will cover a distance of 694 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 Frontier ($81), American Airlines ($106), and Southwest ($108).

  • 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 - Philadelphia or Lambert-St Louis - Washington, D.C. Reagan-National 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 $382 for a flight from St. Louis to Maryland. The cheapest flight overall is $117 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, January is the cheapest month in which you can book a flight from St. Louis to Maryland (average of $124). Flying from St. Louis to Maryland in November is currently the most expensive (average of $274). 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 January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$140Average$218FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$196Average$384FlexibilityNo cancel feeOn-time71%
DeltaCheapest$196Average$309FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$207Average$380FlexibilityNo cancel feeOn-time63%

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