What airlines fly to Maryland?

Southwest, Frontier and American Airlines are the top three most popular airlines that fly to Maryland from St. Louis according to our data. Southwest is the first choice among our users, with 72% of people opting to fly with this airline when traveling to Maryland. Keep in mind that there are 4 different airlines that fly to Maryland on a routine basis, so you have a few additional options to choose from.

How many flights depart from St. Louis to Maryland on average per day?

23 flights are operational daily from St. Louis to Maryland as of June 2026. The most popular departure time for this route is 5:00AM, with 36% of flights per day taking off at noon.

How many flights depart from St. Louis to Maryland on average per week?

As of June 2026, 165 flights take off from St. Louis and land in Maryland each week. The most common flight departure day for this route is Mon, with 18% of weekly flights taking off on this day.

What is the cheapest airline that flies from Lambert-St Louis to Maryland?

Frontier, Delta, and Southwest are the most popular carriers operating from Lambert-St Louis to Maryland

When did momondo last update prices for flights from Lambert-St Louis Airport to Maryland?

Prices for flights from Lambert-St Louis Airport to Maryland refresh daily.

How many operators does momondo search for flights from Lambert-St Louis Airport to Maryland?

There are 5 operators available for flights from Lambert-St Louis Airport to Maryland as of June 2026.

How old do you have to be to fly from Lambert-St Louis Airport to Maryland?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Maryland.

What documentation or ID do you need to fly to Maryland?

The travel and health documents you'll need for your trip to Maryland may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Maryland. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$74 Cheap Flights from St. Louis to Maryland in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Maryland

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

4:57 pm - 11:17 pm

STL

BWI

5h 20m

1 stop

9:37 pm - 5:37 pm

BWI

STL

21h 00m

1 stop

$155Frontier

Wed, Jul 29 - Wed, Aug 5

4:57 pm - 11:17 pm

STL

BWI

5h 20m

1 stop

9:37 pm - 5:37 pm

BWI

STL

21h 00m

1 stop

$157Frontier

Sat, Aug 1 - Mon, Aug 3

4:57 pm - 7:26 am

STL

BWI

13h 29m

1 stop

9:37 pm - 5:37 pm

BWI

STL

21h 00m

1 stop

$160Frontier

Wed, Jul 29 - Mon, Aug 3

7:55 pm - 10:55 pm

STL

DCA

2h 00mnonstop

11:45 am - 2:50 pm

DCA

STL

4h 05m

1 stop

$263Southwest

Fri, Jul 3 - Tue, Jul 14

10:00 am - 4:35 pm

STL

IAD

5h 35m

1 stop

6:00 am - 10:55 am

IAD

STL

5h 55m

1 stop

$263Delta

Thu, Sep 24 - Mon, Sep 28

10:15 am - 3:15 pm

STL

DCA

4h 00m

1 stop

3:00 pm - 4:15 pm

DCA

STL

2h 15mnonstop

$267Southwest

Wed, Jul 1 - Wed, Jul 8

6:00 am - 11:55 am

STL

IAD

4h 55m

1 stop

5:55 pm - 7:26 pm

IAD

STL

2h 31mnonstop

$267United Airlines

Sat, Jul 4 - Sat, Jul 4

5:02 pm - 8:15 pm

STL

DCA

2h 13mnonstop

8:40 am - 10:14 am

DCA

STL

2h 34mnonstop

$269American Airlines

Fri, Jul 24 - Wed, Aug 5

3:57 pm - 9:46 pm

STL

DCA

4h 49m

1 stop

8:00 am - 1:33 pm

DCA

STL

6h 33m

1 stop

$277Delta

Wed, Jul 1 - Sat, Jul 4

1:54 pm - 8:11 pm

STL

SBY

5h 17m

1 stop

4:40 pm - 10:40 pm

SBY

STL

7h 00m

1 stop

$462American Airlines

Sat, Aug 15 - Sat, Aug 22

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American Airlines flights from St. Louis to Maryland

Our best American Airlines deals on St. Louis to Maryland flight tickets

American Airlines

Jul 24

STL5:02 pmLambert-St Louis

2h 13m

DCA8:15 pmWashington, D.C. Reagan-National

Aug 5

DCA8:40 amWashington, D.C. Reagan-National

2h 34m

STL10:14 amLambert-St Louis

$269

American Airlines

Jul 24

STL6:16 pmLambert-St Louis

4h 43m

1 stop

DCA11:59 pmWashington, D.C. Reagan-National

Aug 5

DCA8:40 amWashington, D.C. Reagan-National

2h 34m

STL10:14 amLambert-St Louis

$279

American Airlines

Jul 27

STL6:43 amLambert-St Louis

2h 03m

DCA9:46 amWashington, D.C. Reagan-National

Aug 3

DCA8:00 pmWashington, D.C. Reagan-National

2h 21m

STL9:21 pmLambert-St Louis

$287

Frontier flights from St. Louis to Maryland

Our best Frontier deals on St. Louis to Maryland flight tickets

Frontier

Jul 29

STL4:57 pmLambert-St Louis

5h 20m

1 stop

BWI11:17 pmBaltimore/Washington

Aug 5

BWI9:37 pmBaltimore/Washington

21h 00m

1 stop

STL5:37 pmLambert-St Louis

$155

Frontier

Aug 1

STL4:57 pmLambert-St Louis

5h 20m

1 stop

BWI11:17 pmBaltimore/Washington

Aug 3

BWI9:37 pmBaltimore/Washington

21h 00m

1 stop

STL5:37 pmLambert-St Louis

$157

Frontier

Jul 29

STL4:57 pmLambert-St Louis

13h 29m

1 stop

BWI7:26 amBaltimore/Washington

Aug 3

BWI9:37 pmBaltimore/Washington

21h 00m

1 stop

STL5:37 pmLambert-St Louis

$160

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Wed 7/29

4:57 pm-11:17 pm

1 stop5h 20m

Baltimore/Washington

Wed 8/5

9:37 pm-5:37 pm

1 stop21h 00m

$155

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Sat 8/1

4:57 pm-11:17 pm

1 stop5h 20m

Baltimore/Washington

Mon 8/3

9:37 pm-5:37 pm

1 stop21h 00m

$157

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Wed 7/29

4:57 pm-7:26 am

1 stop13h 29m

Baltimore/Washington

Mon 8/3

9:37 pm-5:37 pm

1 stop21h 00m

$160

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

Fri 7/3

7:55 pm-10:55 pm

Nonstop2h 00m

Washington, D.C. Reagan-National

Tue 7/14

11:45 am-2:50 pm

1 stop4h 05m

$263

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

Thu 9/24

10:00 am-4:35 pm

1 stop5h 35m

Washington, D.C. Dulles Intl

Mon 9/28

6:00 am-10:55 am

1 stop5h 55m

$263

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

Wed 7/1

10:15 am-3:15 pm

1 stop4h 00m

Washington, D.C. Reagan-National

Wed 7/8

3:00 pm-4:15 pm

Nonstop2h 15m

$267

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

Sat 7/4

6:00 am-11:55 am

1 stop4h 55m

Washington, D.C. Dulles Intl

Sat 7/4

5:55 pm-7:26 pm

Nonstop2h 31m

$267

Quickest round-trip

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

Fri 7/24

5:02 pm-8:15 pm

Nonstop2h 13m

Washington, D.C. Reagan-National

Wed 8/5

8:40 am-10:14 am

Nonstop2h 34m

$269

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

Wed 7/1

3:57 pm-9:46 pm

1 stop4h 49m

Washington, D.C. Reagan-National

Sat 7/4

8:00 am-1:33 pm

1 stop6h 33m

$277

St. LouisSalisbury

STL - SBY

STLSBY

Lambert-St Louis

Sat 8/15

1:54 pm-8:11 pm

1 stop5h 17m

Salisbury-Ocean City

Sat 8/22

4:40 pm-10:40 pm

1 stop7h 00m

$462

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from St. Louis to Maryland

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Maryland?

The cheapest month to fly to Maryland from St. Louis is in December. Flight prices, which tend to average around $129, are often lower during this time because this is during the off-season. If you don’t want to visit Maryland in December, then you should wait until February to fly from St. Louis, when ticket prices are also cheap, with an average price of $147.

What is the cheapest day to depart on your flight to Maryland?

The cheapest day to depart from St. Louis to Maryland is on a Tuesday. Travelers who choose to depart for Maryland on a Tuesday will often find tickets for as low as $377. The most expensive day to fly to Maryland is Monday, with ticket prices averaging around $475.

What is the cheapest time of day to depart on your flight to Maryland?

Our most recent data shows that the best time of day to fly to Maryland is in the afternoon. Flights from St. Louis to Maryland during this time can be as low as $343. In contrast, the most expensive time of day to depart to Maryland is at noon when prices are around $595.

What is the cheapest Lambert-St Louis to Maryland flight route?

Fly from Lambert-St Louis to Baltimore/Washington for the best Lambert-St Louis - Maryland flight prices

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

You are more likely to see cheaper flights to Maryland from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Maryland for around $364 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Maryland from St. Louis for as low as $241 on momondo.

What cabin class options are available on St. Louis to Maryland flights?

There is only 1 cabin class available to choose from on St. Louis to Maryland flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on St. Louis to Maryland flights?

You could potentially save up to 37% on your flight if you consider stops on a St. Louis to Maryland flight.

Cheap St. Louis to Maryland flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Maryland

Best Price Found	$222
Fastest flight time	1h 55m
Direct flights	Every day
Airports in Maryland	112 airports

The best one-way flight to Maryland from St. Louis in the past 72 hours is $222. The best round-trip flight deal from St. Louis to Maryland found on momondo in the last 72 hours is $450.

The fastest flight from St. Louis to Maryland takes 1h 55m

Direct flights go from St. Louis to Maryland every day.

There are 112 airports in Maryland. From St. Louis there are direct flights to Washington, D.C. Reagan-National (DCA), Baltimore/Washington (BWI), Philadelphia (PHL).

Search flight deals

Frequently asked questions about flying from St. Louis to Maryland

When did momondo last update prices for flights from Lambert-St Louis Airport to Maryland?
Prices for flights from Lambert-St Louis Airport to Maryland refresh daily.
How many operators does momondo search for flights from Lambert-St Louis Airport to Maryland?
There are 5 operators available for flights from Lambert-St Louis Airport to Maryland as of June 2026.
How old do you have to be to fly from Lambert-St Louis Airport to Maryland?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Maryland.
What documentation or ID do you need to fly to Maryland?
The travel and health documents you'll need for your trip to Maryland may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Maryland. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from St. Louis to Maryland?
momondo data reveals that the most frequently booked plane model on the route from St. Louis to Maryland is Boeing 737 MAX 8, representing 33.54% of all bookings. The subsequent popular models are Boeing 737-800 Passenger/BBJ2 (winglets) at 19.25%, Canadair (Bombardier) Regional Jet CRJ-550 at 15.53%, and Boeing 737-800 at 4.97%.

Best airlines flying from St. Louis to Maryland

Compare and see reviews for airlines that fly from St. Louis to Maryland with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $153	Free Cancellation	Rating 5.6 2,898 reviews	Search Frontier flights
Delta	PriceFrom $196	Free Cancellation	Rating 7.9 8,395 reviews	Search Delta flights
Southwest	PriceFrom $239	Free Cancellation	Rating 7.9 4,237 reviews	Search Southwest flights
American Airlines	PriceFrom $273	Free Cancellation	Rating 7.1 11,639 reviews	Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Maryland?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Maryland from St. Louis.

Can I find flights from St. Louis to Maryland with flexible booking policies on momondo?

momondo does allow users to show only those flights to Maryland from St. Louis which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from St. Louis to Maryland?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from St. Louis to Maryland.

I’m not ready to book a flight from St. Louis to Maryland right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Maryland, momondo offers a useful price alert feature which will track prices for flights to Maryland from St. Louis and alert you when they change.

An easier way to manage your Maryland trip

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Popular cities in Maryland

Flights to New Yorkfrom $72

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Flights to Washington, D.C.from $58

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Flights to Dallasfrom $82

Flights to Fort Lauderdalefrom $55

Cheap flights from St. Louis to Maryland from $71

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Maryland departing on 8/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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American Airlines flights from St. Louis to Maryland

Our best American Airlines deals on St. Louis to Maryland flight tickets

Frontier flights from St. Louis to Maryland

Our best Frontier deals on St. Louis to Maryland flight tickets

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See travel insights to Maryland from

How to get the cheapest flight ticket from St. Louis to Maryland

What is the cheapest month to fly to Maryland?

What is the cheapest day to depart on your flight to Maryland?

What is the cheapest time of day to depart on your flight to Maryland?

What is the cheapest Lambert-St Louis to Maryland flight route?

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

What cabin class options are available on St. Louis to Maryland flights?

Can stopping save me money on St. Louis to Maryland flights?

What is the cheapest airline that flies from Lambert-St Louis to Maryland?

What airlines fly to Maryland?

How many flights depart from St. Louis to Maryland on average per day?

How many flights depart from St. Louis to Maryland on average per week?

Cheap St. Louis to Maryland flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Maryland

Best Price Found

Fastest flight time

Direct flights

Airports in Maryland

Frequently asked questions about flying from St. Louis to Maryland

Best airlines flying from St. Louis to Maryland

Compare and see reviews for airlines that fly from St. Louis to Maryland with momondo

Why use momondo?

An easier way to manage your Maryland trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Maryland

Popular cities in Maryland

Popular flights according to clicks in the last 7 days on momondo

St. Louis flight routes

According to popular flight searches on momondo this year

Maryland flight routes

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