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

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

What airlines fly to St. Louis?

Southwest, Frontier and Delta are the top three most popular airlines that fly to St. Louis from Maryland according to our data. Southwest is the first choice among our users, with 66% of people opting to fly with this airline when traveling to St. Louis. Keep in mind that there are 4 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.

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

As of September 2025, there are 19 flights per day flying from Maryland to St. Louis. The most common time of day flights depart is 6:00AM, with 50% of flights taking off at noon.

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

As of September 2025, there are 139 flights per week flying from Maryland to St. Louis. The most common day of the week flights depart is Mon, with 22% of flights taking off on this day.

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

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

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

As of September 2025, there are 6 operators available to choose from for flights from Maryland to Lambert-St Louis Airport.

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

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Maryland to Lambert-St Louis Airport.

What documentation or ID do you need to fly to Lambert-St Louis Airport?

The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$72 Cheap Flights from Maryland to St. Louis in 2025/26

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Maryland to St. Louis

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

6:05 am - 10:37 amBWI-STL

5h 32m1 stop

6:05 pm - 10:20 amSTL-BWI

15h 15m1 stop

$144Frontier

Find Deal

Thu, Oct 23 - Mon, Oct 27

6:09 pm - 6:02 pmBWI-STL

24h 53m1 stop

1:41 pm - 8:34 amSTL-BWI

17h 53m1 stop

$146Frontier

Find Deal

Fri, Oct 17 - Sun, Oct 19

6:05 am - 10:37 amBWI-STL

5h 32m1 stop

6:05 pm - 12:40 pmSTL-BWI

17h 35m1 stop

$184Multiple Airlines

Find Deal

Thu, Oct 23 - Mon, Oct 27

5:10 am - 11:01 amBWI-STL

6h 51m1 stop

12:20 pm - 11:54 pmSTL-BWI

10h 34m1 stop

$198Spirit Airlines

Find Deal

Thu, Dec 4 - Sun, Dec 7

6:00 am - 5:31 pmBWI-STL

12h 31m1 stop

12:20 pm - 11:54 pmSTL-BWI

10h 34m1 stop

$203Multiple Airlines

Find Deal

Fri, Dec 5 - Sun, Dec 7

2:46 pm - 6:25 pmBWI-STL

4h 39m1 stop

6:04 pm - 11:35 pmSTL-BWI

4h 31m1 stop

$229American Airlines

Find Deal

Tue, Nov 11 - Tue, Nov 18

2:45 pm - 4:05 pmDCA-STL

2h 20mnonstop

8:45 am - 11:40 amSTL-DCA

1h 55mnonstop

$229Southwest

Find Deal

Tue, Nov 11 - Wed, Nov 12

7:50 am - 9:20 amDCA-STL

2h 30mnonstop

6:14 pm - 9:26 pmSTL-DCA

2h 12mnonstop

$230American Airlines

Find Deal

Tue, Nov 11 - Tue, Nov 18

3:45 pm - 6:35 pmDCA-STL

3h 50m1 stop

1:10 pm - 4:10 pmSTL-DCA

2h 00mnonstop

$235Southwest

Find Deal

Tue, Oct 21 - Wed, Nov 12

5:15 am - 11:01 amPHL-STL

6h 46m1 stop

12:20 pm - 12:32 amSTL-PHL

11h 12m1 stop

$280Spirit Airlines

Find Deal

Thu, Feb 5 - Sun, Feb 8

Spirit Airlines flights from Maryland to St. Louis

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

Spirit Airlines

Dec 4

BWI5:10 amBaltimore/Washington

6h 51m

1 stop

STL11:01 amLambert-St Louis

Dec 7

STL12:20 pmLambert-St Louis

10h 34m

1 stop

BWI11:54 pmBaltimore/Washington

$198

Find similar

Spirit Airlines

Feb 5

PHL5:15 amPhiladelphia

6h 46m

1 stop

STL11:01 amLambert-St Louis

Feb 8

STL12:20 pmLambert-St Louis

11h 12m

1 stop

PHL12:32 amPhiladelphia

$280

Find similar

Spirit Airlines

Oct 4

BWI4:00 pmBaltimore/Washington

19h 02m

1 stop

STL10:02 amLambert-St Louis

Nov 1

STL7:15 pmLambert-St Louis

38h 02m

2 stops

BWI10:17 amBaltimore/Washington

$350

Find similar

Frontier flights from Maryland to St. Louis

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

Frontier

Oct 23

BWI6:05 amBaltimore/Washington

5h 32m

1 stop

STL10:37 amLambert-St Louis

Oct 27

STL6:05 pmLambert-St Louis

15h 15m

1 stop

BWI10:20 amBaltimore/Washington

$144

Find similar

Frontier

Oct 17

BWI6:09 pmBaltimore/Washington

24h 53m

1 stop

STL6:02 pmLambert-St Louis

Oct 19

STL1:41 pmLambert-St Louis

17h 53m

1 stop

BWI8:34 amBaltimore/Washington

$146

Find similar

Frontier

Oct 23

BWI4:12 pmBaltimore/Washington

19h 04m

1 stop

STL10:16 amLambert-St Louis

Oct 27

STL6:05 pmLambert-St Louis

15h 15m

1 stop

BWI10:20 amBaltimore/Washington

$154

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Thu 10/23

6:05 am-10:37 am

1 stop5h 32m

Lambert-St Louis

Mon 10/27

6:05 pm-10:20 am

1 stop15h 15m

$144

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Fri 10/17

6:09 pm-6:02 pm

1 stop24h 53m

Lambert-St Louis

Sun 10/19

1:41 pm-8:34 am

1 stop17h 53m

$146

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Thu 10/23

6:05 am-10:37 am

1 stop5h 32m

Lambert-St Louis

Mon 10/27

6:05 pm-12:40 pm

1 stop17h 35m

$184

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Thu 12/4

5:10 am-11:01 am

1 stop6h 51m

Lambert-St Louis

Sun 12/7

12:20 pm-11:54 pm

1 stop10h 34m

$198

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Fri 12/5

6:00 am-5:31 pm

1 stop12h 31m

Lambert-St Louis

Sun 12/7

12:20 pm-11:54 pm

1 stop10h 34m

$203

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Tue 11/11

2:46 pm-6:25 pm

1 stop4h 39m

Lambert-St Louis

Tue 11/18

6:04 pm-11:35 pm

1 stop4h 31m

$229

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Tue 11/11

2:45 pm-4:05 pm

Nonstop2h 20m

Lambert-St Louis

Wed 11/12

8:45 am-11:40 am

Nonstop1h 55m

$229

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Tue 11/11

7:50 am-9:20 am

Nonstop2h 30m

Lambert-St Louis

Tue 11/18

6:14 pm-9:26 pm

Nonstop2h 12m

$230

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Tue 10/21

3:45 pm-6:35 pm

1 stop3h 50m

Lambert-St Louis

Wed 11/12

1:10 pm-4:10 pm

Nonstop2h 00m

$235

PhiladelphiaSt. Louis

PHL - STL

PHLSTL

Philadelphia

Thu 2/5

5:15 am-11:01 am

1 stop6h 46m

Lambert-St Louis

Sun 2/8

12:20 pm-12:32 am

1 stop11h 12m

$280

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 Maryland to St. Louis

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 St. Louis?

In general, August is the cheapest month to fly from Maryland to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $267. The month of May is another great option to travel to St. Louis, with average flight prices from Maryland averaging around $297.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Wednesday when prices can be found for as low as $349. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $413. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Maryland at noon is the least expensive time of day to depart. momondo users have found prices as low as $312 when looking at flights departing at noon. In the afternoon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $384 per ticket.

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

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

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

You are more likely to see cheaper flights to St. Louis from Maryland when booking weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $405 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from Maryland for as low as $260 on momondo.

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

There is only 1 cabin class available to choose from on Maryland to Lambert-St Louis 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 Maryland to St. Louis flights?

You could potentially save up to 20% on your flight if you consider stops on a Maryland to St. Louis flight.

Cheap Maryland to St. Louis flight deals and tips

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

Best Price Found	$201
Fastest flight time	2h 15m
Direct flights	Every day
Airports in St. Louis	1 airport

The best one-way flight to St. Louis from Maryland in the past 72 hours is $201. The best round-trip flight deal from Maryland to St. Louis found on momondo in the last 72 hours is $323.

The fastest flight from Maryland to St. Louis takes 2h 15m

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

There is 1 airport near St. Louis: Lambert-St Louis (STL)

Search flight deals

When did momondo last update prices for flights from Maryland to Lambert-St Louis Airport?
Prices for flights from Maryland to Lambert-St Louis Airport are updated daily.
How many operators does momondo search for flights from Maryland to Lambert-St Louis Airport?
As of September 2025, there are 6 operators available to choose from for flights from Maryland to Lambert-St Louis Airport.
How old do you have to be to fly from Maryland to Lambert-St Louis Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Maryland to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Maryland to St. Louis?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Maryland to St. Louis is Boeing 737-800 Passenger/BBJ2 (winglets) (24.94% of total bookings). The next most popular plane models are Boeing 737 MAX 8 (22.60%), Boeing 737-700 Passenger/BBJ1 (winglets) (11.95%), and Canadair (Bombardier) Regional Jet CRJ-550 (5.71%).

Best airlines flying from Maryland to St. Louis

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

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $109	Free Cancellation	Rating 5.8 3,158 reviews	Search Frontier flights
Delta	PriceFrom $141	Free Cancellation	Rating 7.9 7,964 reviews	Search Delta flights
American Airlines	PriceFrom $168	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Southwest	PriceFrom $199	Free Cancellation	Rating 8.0 4,246 reviews	Search Southwest flights

St. Charles

Chesterfield

Fairview Heights

Hermann

Florissant

Maryland Heights

O'Fallon

Fenton

Collinsville

Wentzville

Alton

St. Peters

Farmington

Festus

Glencoe

Clayton

Edwardsville

Eureka

Litchfield

Shrewsbury

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Maryland to St. Louis. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo allows you to filter the results for Maryland to St. Louis flights to just show those with flexible booking policies.

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

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 Maryland to St. Louis.

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

Of course. momondo tracks the price of Maryland to St. Louis flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your St. Louis 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.

Start using Trips

Find my bookings

Get notified when prices go down

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

1 adult

Wed 10/29

Wed 11/5

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States

Cheap flights from Maryland to St. Louis from $72

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Maryland to St. Louis departing on 10/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Maryland to St. Louis

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

Spirit Airlines flights from Maryland to St. Louis

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

Frontier flights from Maryland to St. Louis

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

momondo Fare Finder

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

See travel insights to St. Louis from

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

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 St. Louis?

What is the cheapest day to depart on your flight to St. Louis?

What is the cheapest time of day to depart on your flight to St. Louis?

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

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

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

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

There is only 1 cabin class available to choose from on Maryland to Lambert-St Louis 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 Maryland to St. Louis flights?

You could potentially save up to 20% on your flight if you consider stops on a Maryland to St. Louis flight.

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

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

What airlines fly to St. Louis?

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

As of September 2025, there are 19 flights per day flying from Maryland to St. Louis. The most common time of day flights depart is 6:00AM, with 50% of flights taking off at noon.

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

As of September 2025, there are 139 flights per week flying from Maryland to St. Louis. The most common day of the week flights depart is Mon, with 22% of flights taking off on this day.

Cheap Maryland to St. Louis flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in St. Louis

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

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

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

What documentation or ID do you need to fly to Lambert-St Louis Airport?

What is the most popular plane model from Maryland to St. Louis?

Best airlines flying from Maryland to St. Louis

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

Traveling to a place near St. Louis?

Why use momondo?

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

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

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

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

An easier way to manage your St. Louis 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 the United States

Airports servicing Missouri