HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
St. Louis

$89+ 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 5/19. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — STL
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Maryland to St. Louis with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 May 1, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$181
(CheapOair)

One-way from

$89
(Frontier)

Popular in

March

Cheapest in

August

Average price

$299

Good round-trip deal

$329 or less

Good one-way deal

$184 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. 8% potential increase in price ($31 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2025
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

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 May 1, 2025.

This CheapOair deal was found by Cheapflights users on 4/29. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/169:21 pmBWI - STL
1 stop27h 45mFrontier
Tue 5/205:45 pmSTL - BWI
1 stop20h 10mFrontier
Deal found 4/29$181
This Southwest deal was found by Cheapflights users on 4/30. 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.
Sat 5/246:50 pmDCA - STL
Nonstop2h 15mSouthwest
Sun 5/257:00 amSTL - DCA
1 stop6h 50mSouthwest
Deal found 4/30$207
This Booking.com deal was found by Cheapflights users on 4/30. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/185:26 pmIAD - STL
1 stop7h 40mFrontier
Wed 5/215:45 pmSTL - IAD
1 stop17h 47mFrontier
Deal found 4/30$208
This Booking.com deal was found by Cheapflights users on 4/28. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/91:00 pmDCA - STL
1 stop21h 59mFrontier
Sat 5/108:15 pmSTL - DCA
1 stop14h 52mFrontier
Deal found 4/28$208
This CheapOair deal was found by Cheapflights users on 4/30. 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.
Mon 5/199:21 pmBWI - STL
1 stop27h 23mMultiple Airlines
Thu 5/2210:10 amSTL - BWI
1 stop7h 42mMultiple Airlines
Deal found 4/30$212
This United Airlines deal was found by Cheapflights users on 4/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/48:40 amIAD - STL
Nonstop2h 19mUnited Airlines
Sat 7/55:30 pmSTL - IAD
1 stop6h 00mUnited Airlines
Deal found 4/28$214
This American Airlines deal was found by Cheapflights users on 4/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/291:54 pmDCA - STL
Nonstop2h 17mAmerican Airlines
Tue 6/36:47 pmSTL - DCA
1 stop4h 12mAmerican Airlines
Deal found 4/29$215
This Mytrip deal was found by Cheapflights users on 4/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/262:08 pmBWI - STL
1 stop3h 56mSpirit Airlines
Sun 6/296:36 pmSTL - BWI
1 stop11h 28mSpirit Airlines
Deal found 4/30$216
This Delta deal was found by Cheapflights users on 4/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/295:40 pmIAD - STL
1 stop6h 58mDelta
Tue 6/35:45 pmSTL - IAD
1 stop4h 09mDelta
Deal found 4/29$224
This Delta deal was found by Cheapflights users on 4/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/296:00 amDCA - STL
1 stop4h 00mDelta
Tue 6/312:30 pmSTL - DCA
1 stop7h 18mDelta
Deal found 4/29$224
This Southwest deal was found by Cheapflights users on 4/30. 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.
Wed 5/216:05 amBWI - STL
1 stop5h 40mSouthwest
Wed 5/2112:45 pmSTL - BWI
1 stop3h 50mSouthwest
Deal found 4/30$245
This American Airlines deal was found by Cheapflights users on 4/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/315:02 amIAD - STL
1 stop4h 16mAmerican Airlines
Sat 5/316:47 pmSTL - IAD
1 stop4h 15mAmerican Airlines
Deal found 4/29$251

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 May 1, 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

Fri 5/16

9:21 pm-12:06 am

1 stop27h 45m

Lambert-St Louis

Tue 5/20

5:45 pm-2:55 pm

1 stop20h 10m

$181

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Sat 5/24

6:50 pm-8:05 pm

Nonstop2h 15m

Lambert-St Louis

Sun 5/25

7:00 am-2:50 pm

1 stop6h 50m

$207

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Sun 5/18

5:26 pm-12:06 am

1 stop7h 40m

Lambert-St Louis

Wed 5/21

5:45 pm-12:32 pm

1 stop17h 47m

$208

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Fri 5/9

1:00 pm-9:59 am

1 stop21h 59m

Lambert-St Louis

Sat 5/10

8:15 pm-12:07 pm

1 stop14h 52m

$208

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Mon 5/19

9:21 pm-11:44 pm

1 stop27h 23m

Lambert-St Louis

Thu 5/22

10:10 am-6:52 pm

1 stop7h 42m

$212

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Fri 7/4

8:40 am-9:59 am

Nonstop2h 19m

Lambert-St Louis

Sat 7/5

5:30 pm-12:30 am

1 stop6h 00m

$214

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Thu 5/29

1:54 pm-3:11 pm

Nonstop2h 17m

Lambert-St Louis

Tue 6/3

6:47 pm-11:59 pm

1 stop4h 12m

$215

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Thu 6/26

2:08 pm-5:04 pm

1 stop3h 56m

Lambert-St Louis

Sun 6/29

6:36 pm-7:04 am

1 stop11h 28m

$216

Washington, D.C.St. Louis

IAD - STL

IADSTL

Washington, D.C. Dulles Intl

Thu 5/29

5:40 pm-11:38 pm

1 stop6h 58m

Lambert-St Louis

Tue 6/3

5:45 pm-10:54 pm

1 stop4h 09m

$224

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Thu 5/29

6:00 am-9:00 am

1 stop4h 00m

Lambert-St Louis

Tue 6/3

12:30 pm-8:48 pm

1 stop7h 18m

$224

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 51 results
1
2
3
...
6

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 May 1, 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.

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

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 May 1, 2025.
To help decide which airline to fly from Maryland to St. Louis, see what other customers have to say about Alaska Airlines, Southwest and Delta. 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.
Alaska Airlines
8.0
Very good
9,972 reviews

Boarding

8.1

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
9,972 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Boarding

8.1

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,294 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Boarding

8.1

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,934 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Boarding

8.1

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,696 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Boarding

8.1

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Boarding

8.1

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

  • 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 $89. However, be on the lookout for offers from American Airlines and Spirit 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, Philadelphia - Lambert-St Louis and Baltimore/Washington - Lambert-St Louis.

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

    On average you can expect to pay $308 for a flight from Maryland to St. Louis. The cheapest flight overall is $129 while the most popular route, (Washington, D.C. Dulles Intl - Lambert-St Louis) is currently priced at $199.

  • 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
Fenton
Maryland Heights
Fairview Heights
Collinsville
Wentzville
Eureka
St. Peters
Festus
Glencoe
Alton
Farmington
O'Fallon

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Maryland to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
Newark to Kansas City flights
John F Kennedy Intl to Kansas City flights
Newark to St. Louis flights
LaGuardia to Kansas City flights
LaGuardia to St. Louis flights
John F Kennedy Intl to St. Louis flights
O'Hare Intl to Kansas City flights
Denver to Kansas City flights
Dallas/Fort Worth to St. Louis flights
Seattle to St. Louis flights
Dulles Intl to St. Louis flights
San Francisco to St. Louis flights
Seattle to Kansas City flights
Boston to Kansas City flights
Baltimore to St. Louis flights
Los Angeles to Kansas City flights
Dallas/Fort Worth to Kansas City flights
Boston to St. Louis flights
Los Angeles to St. Louis flights
Hobby to St. Louis flights
Dulles Intl to Kansas City flights
Denver to St. Louis flights
O'Hare Intl to St. Louis flights
Detroit to St. Louis flights
Philadelphia to St. Louis flights
Reagan-National to Kansas City flights
George Bush Intcntl to St. Louis flights
Orlando to St. Louis flights
Ontario to Kansas City flights
Hobby to Kansas City flights
Portland to Kansas City flights
Ontario to St. Louis flights
Detroit to Kansas City flights
Reagan-National to St. Louis flights
Philadelphia to Kansas City flights
Sky Harbor Intl to Kansas City flights
Minneapolis to St. Louis flights
San Francisco to Kansas City flights
Sky Harbor Intl to St. Louis flights
Atlanta to Kansas City flights
San Diego to St. Louis flights
Salt Lake City to St. Louis flights
Baltimore to Kansas City flights
Salt Lake City to Kansas City flights
Portland to St. Louis flights
Atlanta to St. Louis flights
George Bush Intcntl to Kansas City flights
Charlotte to St. Louis flights
Austin to St. Louis flights
Minneapolis to Kansas City flights

Top 5 airlines flying from Maryland to St. Louis

Discover the top 5 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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$108Average$215FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$168Average$369FlexibilityNo cancel feeOn-time71%
DeltaCheapest$176Average$313FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$197Average$380FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$288Average$548FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.