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

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

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

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

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 78% 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 February 2026, 111 flights take off from St. Louis and land in Maryland each week. The most common flight departure day for this route is Thu, with 22% of weekly flights taking off on this day.

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 February 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.

$60 Cheap Flights from St. Louis to Maryland in 2026

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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.

11:32 am - 12:41 am

STL

BWI

12h 09m

1 stop

6:05 am - 10:37 am

BWI

STL

5h 32m

1 stop

$130Frontier

Wed, Mar 11 - Wed, Mar 18

8:22 pm - 5:13 pm

STL

BWI

19h 51m

1 stop

6:00 am - 6:51 am

BWI

STL

25h 51m

1 stop

$142Frontier

Mon, Feb 23 - Thu, Feb 26

2:09 pm - 12:52 am

STL

PHL

9h 43m

1 stop

5:05 am - 1:34 pm

PHL

STL

9h 29m

1 stop

$151Frontier

Mon, Mar 9 - Mon, Mar 16

4:51 pm - 11:17 am

STL

BWI

17h 26m

1 stop

3:19 pm - 10:37 am

BWI

STL

20h 18m

1 stop

$161Multiple Airlines

Tue, Mar 10 - Tue, Mar 17

1:09 pm - 8:44 am

STL

PHL

18h 35m

2 stops

5:05 am - 1:19 pm

PHL

STL

9h 14m

1 stop

$189Multiple Airlines

Fri, Mar 6 - Mon, Mar 9

6:05 am - 9:15 am

STL

DCA

2h 10mnonstop

7:57 pm - 9:23 pm

DCA

STL

2h 26mnonstop

$271American Airlines

Fri, Apr 10 - Mon, Apr 13

6:00 am - 9:12 am

STL

DCA

2h 12mnonstop

6:09 am - 11:11 am

DCA

STL

6h 02m

1 stop

$273American Airlines

Tue, Mar 24 - Thu, Mar 26

9:35 pm - 7:15 am

STL

DCA

8h 40m

1 stop

8:05 am - 9:35 am

DCA

STL

2h 30mnonstop

$274Southwest

Sat, Mar 7 - Sat, Mar 14

7:35 pm - 10:30 pm

STL

DCA

1h 55mnonstop

1:00 pm - 7:55 pm

DCA

STL

7h 55m

2 stops

$278Southwest

Mon, Mar 16 - Tue, Mar 17

7:03 am - 2:39 pm

STL

IAD

6h 36m

1 stop

6:00 am - 9:46 am

IAD

STL

4h 46m

1 stop

$283Delta

Wed, Apr 8 - Sat, Apr 11

Frontier flights from St. Louis to Maryland

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

Frontier

Mar 11

STL11:32 amLambert-St Louis

12h 09m

1 stop

BWI12:41 amBaltimore/Washington

Mar 18

BWI6:05 amBaltimore/Washington

5h 32m

1 stop

STL10:37 amLambert-St Louis

$130

Frontier

Feb 23

STL8:22 pmLambert-St Louis

19h 51m

1 stop

BWI5:13 pmBaltimore/Washington

Feb 26

BWI6:00 amBaltimore/Washington

25h 51m

1 stop

STL6:51 amLambert-St Louis

$142

Frontier

Mar 9

STL2:09 pmLambert-St Louis

23h 15m

1 stop

BWI2:24 pmBaltimore/Washington

Mar 19

BWI3:19 pmBaltimore/Washington

23h 15m

1 stop

STL1:34 pmLambert-St Louis

$154

United Airlines flights from St. Louis to Maryland

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

United Airlines

Apr 1

STL8:30 amLambert-St Louis

2h 13m

IAD11:43 amWashington, D.C. Dulles Intl

Apr 7

IAD5:41 pmWashington, D.C. Dulles Intl

7h 16m

1 stop

STL11:57 pmLambert-St Louis

$269

United Airlines

Mar 10

STL8:17 amLambert-St Louis

6h 52m

1 stop

IAD4:09 pmWashington, D.C. Dulles Intl

Mar 12

IAD8:40 amWashington, D.C. Dulles Intl

2h 32m

STL10:12 amLambert-St Louis

$273

United Airlines

Apr 13

STL8:30 amLambert-St Louis

2h 13m

IAD11:43 amWashington, D.C. Dulles Intl

Apr 15

IAD5:41 pmWashington, D.C. Dulles Intl

7h 16m

1 stop

STL11:57 pmLambert-St Louis

$275

Fly from

Fly to

Route

Depart

Return

Price

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Wed 3/11

11:32 am-12:41 am

1 stop12h 09m

Baltimore/Washington

Wed 3/18

6:05 am-10:37 am

1 stop5h 32m

$130

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Mon 2/23

8:22 pm-5:13 pm

1 stop19h 51m

Baltimore/Washington

Thu 2/26

6:00 am-6:51 am

1 stop25h 51m

$142

St. LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Mon 3/9

2:09 pm-12:52 am

1 stop9h 43m

Philadelphia

Mon 3/16

5:05 am-1:34 pm

1 stop9h 29m

$151

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Tue 3/10

4:51 pm-11:17 am

1 stop17h 26m

Baltimore/Washington

Tue 3/17

3:19 pm-10:37 am

1 stop20h 18m

$161

St. LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Fri 3/6

1:09 pm-8:44 am

2 stops18h 35m

Philadelphia

Mon 3/9

5:05 am-1:19 pm

1 stop9h 14m

$189

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

Fri 4/10

6:05 am-9:15 am

Nonstop2h 10m

Washington, D.C. Reagan-National

Mon 4/13

7:57 pm-9:23 pm

Nonstop2h 26m

$271

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

Tue 3/24

6:00 am-9:12 am

Nonstop2h 12m

Washington, D.C. Reagan-National

Thu 3/26

6:09 am-11:11 am

1 stop6h 02m

$273

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

Sat 3/7

9:35 pm-7:15 am

1 stop8h 40m

Washington, D.C. Reagan-National

Sat 3/14

8:05 am-9:35 am

Nonstop2h 30m

$274

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

Mon 3/16

7:35 pm-10:30 pm

Nonstop1h 55m

Washington, D.C. Reagan-National

Tue 3/17

1:00 pm-7:55 pm

2 stops7h 55m

$278

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

Wed 4/8

7:03 am-2:39 pm

1 stop6h 36m

Washington, D.C. Dulles Intl

Sat 4/11

6:00 am-9:46 am

1 stop4h 46m

$283

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 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 October to fly from St. Louis, when ticket prices are also cheap, with an average price of $255.

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 $361. The most expensive day to fly to Maryland is Sunday, with ticket prices averaging around $477.

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 $298. In contrast, the most expensive time of day to depart to Maryland is at noon when prices are around $913.

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 $384 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 $188 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 40% 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	$196
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 $196. The best round-trip flight deal from St. Louis to Maryland found on momondo in the last 72 hours is $377.

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

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 February 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 35.00% of all bookings. The subsequent popular models are Boeing 737-800 Passenger/BBJ2 (winglets) at 25.71%, Boeing 737-700 Passenger/BBJ1 (winglets) at 8.57%, and Canadair (Bombardier) Regional Jet CRJ-550 at 7.14%.

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 $140	Free Cancellation	Rating 5.7 3,052 reviews	Search Frontier flights
American Airlines	PriceFrom $196	Free Cancellation	Rating 7.2 11,276 reviews	Search American Airlines flights
Delta	PriceFrom $196	Free Cancellation	Rating 7.9 8,192 reviews	Search Delta flights
Southwest	PriceFrom $207	Free Cancellation	Rating 8.0 4,283 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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Cheap flights from St. Louis to Maryland from $60

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 3/11. 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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Frontier flights from St. Louis to Maryland

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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 to Maryland?

What cabin class options are available on Lambert-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

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

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