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St. Louis

$64+ 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 8/30. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — STL
Sep 1 — Sep 81
Tue 9/1
Tue 9/8
1 adult, Economy
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Cheap 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 2, 2026.

This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/318:30 am
PHL
-
STL
1 stop9h 52m
Frontier
Mon 9/76:17 pm
STL
-
PHL
1 stop11h 58m
Frontier
Deal found 7/28$131
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 9/146:00 am
BWI
-
STL
1 stop8h 10m
Frontier
Mon 9/212:29 pm
STL
-
BWI
1 stop17h 56m
Frontier
Deal found 7/31$141
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/24:45 pm
PHL
-
STL
1 stop25h 37m
Frontier
Mon 9/76:17 pm
STL
-
PHL
1 stop11h 58m
Frontier
Deal found 8/1$142
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/209:29 pm
BWI
-
STL
1 stop13h 11m
Frontier
Mon 10/2610:35 am
STL
-
BWI
1 stop6h 59m
Frontier
Deal found 7/30$144
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/35:28 pm
PHL
-
STL
1 stop17h 12m
Frontier
Fri 11/610:35 am
STL
-
PHL
1 stop6h 40m
Frontier
Deal found 7/28$144
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/26:00 am
BWI
-
STL
1 stop8h 10m
Frontier
Mon 10/52:29 pm
STL
-
BWI
1 stop7h 35m
Frontier
Deal found 8/2$145
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/38:45 am
BWI
-
STL
1 stop9h 37m
Frontier
Mon 9/76:17 pm
STL
-
BWI
1 stop12h 09m
Frontier
Deal found 8/2$146
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/276:45 am
BWI
-
STL
1 stop11h 37m
Frontier
Thu 9/36:17 pm
STL
-
BWI
1 stop17h 07m
Frontier
Deal found 7/30$147
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/38:30 am
PHL
-
STL
1 stop9h 52m
Frontier
Mon 9/76:17 pm
STL
-
PHL
1 stop11h 58m
Frontier
Deal found 7/28$147
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/278:45 am
BWI
-
STL
1 stop9h 37m
Frontier
Sun 8/306:17 pm
STL
-
BWI
1 stop12h 09m
Frontier
Deal found 7/29$149
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/46:30 am
PHL
-
STL
1 stop11h 52m
Frontier
Mon 9/76:17 pm
STL
-
PHL
1 stop17h 09m
Frontier
Deal found 8/1$149
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/199:32 pm
BWI
-
STL
1 stop20h 50m
Frontier
Mon 8/246:17 pm
STL
-
BWI
1 stop12h 09m
Frontier
Deal found 7/30$150

Find 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 2, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$131
(Kiwi.com)

One-way from

$64
(Kiwi.com)

Popular in

July

Cheapest in

October

Average price

$350

Good round-trip deal

$307 or less

Good one-way deal

$208 or less
Provider with most accurate pricing for Washington, D.C. (WAS)-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Lambert-St Louis flights.
Search Deals
From Maryland to Lambert-St Louis
Search Deals
One-way flight from Maryland to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($19 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2026
Search Deals
Price to beat on a round-trip flight from Maryland to Lambert-St Louis.
Search Deals
Price to beat on a one-way flight from Maryland to Lambert-St Louis.
Search Deals

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 2, 2026.
Use the filters below to find and compare flights from Maryland to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Tue 11/3

11:00 am-4:00 pm

2 stops6h 00m

Lambert-St Louis

Tue 11/10

6:20 am-12:00 pm

1 stop4h 40m

$262

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Wed 9/2

5:45 pm-7:11 pm

Nonstop2h 26m

Lambert-St Louis

Thu 9/3

8:40 am-11:54 am

Nonstop2h 14m

$275
Quickest round-trip

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Mon 9/14

6:50 pm-8:00 pm

Nonstop2h 10m

Lambert-St Louis

Mon 9/21

1:10 pm-4:10 pm

Nonstop2h 00m

$275

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Thu 9/24

8:15 am-9:35 am

Nonstop2h 20m

Lambert-St Louis

Fri 9/25

8:10 am-11:10 am

Nonstop2h 00m

$277

PhiladelphiaSt. Louis

PHL - STL

PHLSTL

Philadelphia

Mon 10/12

6:25 am-7:45 am

Nonstop2h 20m

Lambert-St Louis

Thu 10/15

7:50 pm-11:10 pm

Nonstop2h 20m

$277

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Thu 9/17

6:50 am-1:10 pm

1 stop7h 20m

Lambert-St Louis

Mon 9/21

3:55 pm-6:55 pm

Nonstop2h 00m

$285

PhiladelphiaSt. Louis

PHL - STL

PHLSTL

Philadelphia

Thu 8/27

6:35 pm-8:00 pm

Nonstop2h 25m

Lambert-St Louis

Tue 9/1

4:05 pm-11:50 pm

1 stop6h 45m

$287

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Thu 9/10

6:40 am-10:15 am

1 stop4h 35m

Lambert-St Louis

Sat 9/12

1:25 pm-6:35 pm

1 stop4h 10m

$290

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Mon 10/12

10:00 pm-11:15 pm

Nonstop2h 15m

Lambert-St Louis

Thu 10/15

7:50 pm-12:45 am

1 stop3h 55m

$292

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Sat 9/5

6:30 am-1:15 pm

2 stops7h 45m

Lambert-St Louis

Mon 9/7

2:45 pm-10:25 pm

1 stop6h 40m

$292

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/2

Showing 1-10 of 60 resultsSorted by cheapest first
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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, October is the cheapest month in which you can book a flight from Maryland to St. Louis (average of $174). Flying from Maryland to St. Louis in June is currently the most expensive (average of $513). 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 2, 2026.

When flying from Maryland to St. Louis, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 11% versus a flight in the evening.

How much does it cost to fly round-trip from Maryland to St. Louis?

Airfare is below average for this route at the moment.
Maryland to St. Louis flights typically cost between $289 and $473 in September.
The cheapest round-trip price found within the last 5 days was $141 on Frontier (Sep 14-Sep 21).

How far ahead should I book a flight from Maryland to St. Louis?

To ensure you get the cheapest price possible for a flight from Maryland to St. Louis, you should look to book at least 40 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Use this chart to determine the cheapest time to fly round-trip from Maryland to St. Louis. Price data was last updated on August 1, 2026.

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

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 8 times in the past calendar month.

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

    For as low as $275, Southwest can have you in St. Louis from Maryland in 2h 26m. The distance from Maryland to St. Louis is about 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 Maryland to St. Louis one-way?

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $72. However, be on the lookout for offers from United 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 $396 for a flight from Maryland to St. Louis. The cheapest flight overall is $144 while the most popular route, (Washington, D.C. Dulles Intl - Lambert-St Louis) is currently priced at $208.

  • 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, October is the cheapest month in which you can book a flight from Maryland to St. Louis (average of $174). Flying from Maryland to St. Louis in June is currently the most expensive (average of $513). 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
Edwardsville
O'Fallon
Fenton
Swansea
Fairview Heights
Eureka
Maryland Heights
Collinsville
Wentzville
Glencoe
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 August 2, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$121Average$173FlexibilityNo cancel feeOn-time62%
DeltaCheapest$141Average$307FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$280Average$445FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$285Average$419FlexibilityNo cancel feeOn-time71%

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