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 76% 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 week?

As of September 2025, 157 flights take off from St. Louis and land in Maryland each week. The most common flight departure day for this route is Mon, with 20% of weekly flights taking off on this day.

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

22 flights are operational daily from St. Louis to Maryland as of September 2025. The most popular departure time for this route is 5:00AM, with 38% of flights per day taking off at noon.

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

Frontier, Southwest, and American Airlines 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 6 operators available for flights from Lambert-St Louis Airport to Maryland as of September 2025.

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.

$70 Cheap Flights from St. Louis to Maryland in 2025

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Find the cheapest flights from St. Louis to Maryland

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

4:00 pm - 12:17 amSTL-BWI

7h 17m1 stop

6:22 am - 3:04 pmBWI-STL

9h 42m1 stop

$143Frontier

Find Deal

lun., sep. 22 - jue., sep. 25

4:56 pm - 12:54 amSTL-PHL

6h 58m1 stop

5:15 am - 10:12 amPHL-STL

5h 57m1 stop

$143Frontier

Find Deal

vie., nov. 7 - dom., nov. 9

10:57 am - 9:18 pmSTL-BWI

9h 21m1 stop

6:18 am - 10:12 amBWI-STL

4h 54m1 stop

$165

Find Deal

jue., oct. 23 - jue., oct. 30

12:47 pm - 5:59 pmSTL-BWI

4h 12m1 stop

6:10 am - 9:37 amBWI-STL

4h 27m1 stop

$169American Airlines

Find Deal

jue., oct. 2 - mar., oct. 7

12:20 pm - 12:32 amSTL-PHL

11h 12m1 stop

7:00 am - 5:28 pmPHL-STL

11h 28m1 stop

$176

Find Deal

jue., nov. 13 - dom., nov. 16

5:25 pm - 11:06 pmSTL-BWI

4h 41m1 stop

6:13 pm - 11:54 pmBWI-STL

6h 41m1 stop

$179American Airlines

Find Deal

sáb., oct. 4 - lun., oct. 6

8:15 pm - 11:15 pmSTL-DCA

2h 00mnonstop

2:35 pm - 3:50 pmDCA-STL

2h 15mnonstop

$196Southwest

Find Deal

jue., oct. 16 - mar., oct. 21

6:55 am - 12:00 pmSTL-DCA

4h 05m1 stop

6:30 pm - 7:45 pmDCA-STL

2h 15mnonstop

$199Southwest

Find Deal

mié., oct. 8 - sáb., oct. 11

5:12 pm - 11:17 pmSTL-IAD

5h 05m1 stop

7:01 am - 1:00 pmIAD-STL

6h 59m1 stop

$215Delta

Find Deal

mar., dic. 2 - mar., dic. 16

6:52 pm - 12:12 amSTL-IAD

4h 20m1 stop

7:05 am - 10:26 amIAD-STL

4h 21m1 stop

$226Delta

Find Deal

lun., oct. 13 - mar., oct. 14

Spirit Airlines flights from St. Louis to Maryland

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

Spirit Airlines

Nov 13

STL12:20 pmLambert-St Louis

5h 57m

1 stop

BWI7:17 pmBaltimore/Washington

Nov 16

BWI5:10 amBaltimore/Washington

6h 51m

1 stop

STL11:01 amLambert-St Louis

$203

Find similar

Spirit Airlines

Oct 11

STL7:15 pmLambert-St Louis

13h 17m

1 stop

PHL9:32 amPhiladelphia

Oct 15

PHL5:33 amPhiladelphia

29h 29m

1 stop

STL10:02 amLambert-St Louis

$219

Find similar

Spirit Airlines

Oct 19

STL10:57 amLambert-St Louis

21h 35m

1 stop

PHL9:32 amPhiladelphia

Oct 22

PHL5:33 amPhiladelphia

29h 29m

1 stop

STL10:02 amLambert-St Louis

$225

Find similar

Frontier flights from St. Louis to Maryland

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

Frontier

Nov 7

STL4:56 pmLambert-St Louis

6h 58m

1 stop

PHL12:54 amPhiladelphia

Nov 9

PHL5:15 amPhiladelphia

5h 57m

1 stop

STL10:12 amLambert-St Louis

$143

Find similar

Frontier

Oct 3

STL9:32 pmLambert-St Louis

16h 45m

1 stop

BWI3:17 pmBaltimore/Washington

Oct 5

BWI6:22 amBaltimore/Washington

9h 42m

1 stop

STL3:04 pmLambert-St Louis

$144

Find similar

Frontier

Sep 22

STL4:00 pmLambert-St Louis

7h 17m

1 stop

BWI12:17 amBaltimore/Washington

Sep 26

BWI6:27 pmBaltimore/Washington

15h 39m

1 stop

STL9:06 amLambert-St Louis

$145

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

lun. 9/22

4:00 pm-12:17 am

1 stop7h 17m

Baltimore/Washington

jue. 9/25

6:22 am-3:04 pm

1 stop9h 42m

$143

St. LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

vie. 11/7

4:56 pm-12:54 am

1 stop6h 58m

Philadelphia

dom. 11/9

5:15 am-10:12 am

1 stop5h 57m

$143

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

jue. 10/23

10:57 am-9:18 pm

1 stop9h 21m

Baltimore/Washington

jue. 10/30

6:18 am-10:12 am

1 stop4h 54m

$165

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

jue. 10/2

12:47 pm-5:59 pm

1 stop4h 12m

Baltimore/Washington

mar. 10/7

6:10 am-9:37 am

1 stop4h 27m

$169

St. LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

jue. 11/13

12:20 pm-12:32 am

1 stop11h 12m

Philadelphia

dom. 11/16

7:00 am-5:28 pm

1 stop11h 28m

$176

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

sáb. 10/4

5:25 pm-11:06 pm

1 stop4h 41m

Baltimore/Washington

lun. 10/6

6:13 pm-11:54 pm

1 stop6h 41m

$179

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

jue. 10/16

8:15 pm-11:15 pm

Nonstop2h 00m

Washington, D.C. Reagan-National

mar. 10/21

2:35 pm-3:50 pm

Nonstop2h 15m

$196

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

mié. 10/8

6:55 am-12:00 pm

1 stop4h 05m

Washington, D.C. Reagan-National

sáb. 10/11

6:30 pm-7:45 pm

Nonstop2h 15m

$199

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

mar. 12/2

5:12 pm-11:17 pm

1 stop5h 05m

Washington, D.C. Dulles Intl

mar. 12/16

7:01 am-1:00 pm

1 stop6h 59m

$215

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

lun. 10/13

6:52 pm-12:12 am

1 stop4h 20m

Washington, D.C. Dulles Intl

mar. 10/14

7:05 am-10:26 am

1 stop4h 21m

$226

Flights are sorted by cheapest round-trip flights first.

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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 August. Flight prices, which tend to average around $229, are often lower during this time because this is during the off-season. If you don’t want to visit Maryland in August, then you should wait until November to fly from St. Louis, when ticket prices are also cheap, with an average price of $229.

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 Friday. Travelers who choose to depart for Maryland on a Friday will often find tickets for as low as $359. The most expensive day to fly to Maryland is Sunday, with ticket prices averaging around $472.

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 evening. Flights from St. Louis to Maryland during this time can be as low as $288. In contrast, the most expensive time of day to depart to Maryland is at noon when prices are around $960.

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 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 $327 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 $239 on momondo.

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

There is only 1 cabin class available to choose from on Lambert-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 1% 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	$156
Fastest flight time	1h 55m
Direct flights	Every day
Airports in Maryland	2 airports

The best one-way flight to Maryland from St. Louis in the past 72 hours is $156. The best round-trip flight deal from St. Louis to Maryland found on momondo in the last 72 hours is $260.

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

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

There are 2 airports near Maryland: Washington, D.C. Reagan-National (DCA), Baltimore/Washington (BWI)

Search flight deals

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 6 operators available for flights from Lambert-St Louis Airport to Maryland as of September 2025.
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 28.86% of all bookings. The subsequent popular models are Boeing 737-800 Passenger/BBJ2 (winglets) at 24.80%, Boeing 737-700 Passenger/BBJ1 (winglets) at 23.17%, and Canadair (Bombardier) Regional Jet CRJ-550 at 11.38%.

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 $124	Free Cancellation	Rating 5.8 3,185 reviews	Search Frontier flights
American Airlines	PriceFrom $196	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Delta	PriceFrom $196	Free Cancellation	Rating 7.9 7,965 reviews	Search Delta flights
Southwest	PriceFrom $200	Free Cancellation	Rating 8.0 4,250 reviews	Search Southwest 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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Find better results for your trip to Maryland

Popular cities in Maryland

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Flights to Washington, D.C.from $54

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Cheap flights from St. Louis to Maryland from $70

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 11/6. 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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Big names and deals

Filter for what you want

Filter for what you want

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Spirit Airlines flights from St. Louis to Maryland

Our best Spirit 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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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

What is the cheapest month to fly to Maryland?

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 Friday. Travelers who choose to depart for Maryland on a Friday will often find tickets for as low as $359. The most expensive day to fly to Maryland is Sunday, with ticket prices averaging around $472.

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 evening. Flights from St. Louis to Maryland during this time can be as low as $288. In contrast, the most expensive time of day to depart to Maryland is at noon when prices are around $960.

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 to Maryland?

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

There is only 1 cabin class available to choose from on Lambert-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 1% on your flight if you consider stops on a St. Louis to Maryland flight.

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

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

What airlines fly to Maryland?

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

22 flights are operational daily from St. Louis to Maryland as of September 2025. The most popular departure time for this route is 5:00AM, with 38% of flights per day taking off at noon.

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

As of September 2025, 157 flights take off from St. Louis and land in Maryland each week. The most common flight departure day for this route is Mon, with 20% of weekly flights taking off on this day.

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

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

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

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

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

What is the most popular plane model 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?

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

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

How can momondo help me find flights 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?

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