How popular is this St. Louis to Baltimore flight route?

Within the past month, 12 users have taken a look at flights from Lambert-St Louis to Baltimore/Washington.

What are the cheapest airlines flying from St. Louis to Baltimore round-trip?

Frontier, at $198, was found to be the cheapest airline from St. Louis to Baltimore.Alternate airlines to your destination round-trip include American Airlines and Delta. Frontier is 39% cheaper than the average price of flights available within the next 90 days to this destination.

What are the cheapest airlines to fly from St. Louis to Baltimore one-way?

For one-way options, check prices for Spirit Airlines. According to our data, you can fly for as low as $102. Users have also found prices from $104 and $113 on Frontier and Delta, respectively.

What are the cheapest flights from St. Louis to Baltimore?

The cheapest flight price from St. Louis to Baltimore is $108. On average you can expect to pay $293. The most popular route, (Lambert-St Louis - Baltimore/Washington), can usually be booked for $203.

What are the most popular airlines that fly from St. Louis to Baltimore?

American Airlines, Delta and Frontier are the most popular airlines when flying from St. Louis to Baltimore.

What is the cheapest day to fly round-trip from St. Louis to Baltimore?

Departing on a Monday is a good option for securing a great price. You can expect to save up to 36% when planning your travel around this day of the week.

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

Travelers have found it’s best to book a flight 31 days in advance to save up to 170% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 31 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from St. Louis to Baltimore 1-2 weeks in advance for as low as $424, or $567 for flights within the next 24 hours.

What is the cheapest month to fly from St. Louis to Baltimore?

November can be a great time to fly to Baltimore from St. Louis with a flight ticket averaging about $298. Cheapflights users have found deals in the month of November for as cheap as $137. The most expensive prices can be found in the month of March.

Most accurate provider : When it comes to deals on St. Louis-Baltimore flights, users find the pricing of Mytrip to be most consistent on Cheapflights vs. Mytrip Users can find the same prices on St. Louis-Baltimore flight deals on Cheapflights vs. Mytrip >95% of the time. Price accuracy is based on data collected from St. Louis-Baltimore flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on St. Louis-Baltimore flights, Cheapflights users trust Mytrip the most. Mytrip has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Baltimore flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

What airports do I use to fly from St. Louis to Baltimore?

Baltimore/Washington is the airport most travelers will use when flying to Baltimore from Lambert-St Louis. Booking flights from Lambert-St Louis (STL) to Baltimore/Washington (BWI) should be relatively easy as there are 4 daily flights to Baltimore from 5 different airlines. 1h 55m is how long a flight from St. Louis to Baltimore/Washington will take if you book a nonstop flight.

Can I find deals for flights from St. Louis to Baltimore that include hotel bookings?

Yes. In addition to deals on St. Louis to Baltimore flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from St. Louis to Baltimore?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Baltimore.

Can I find deals for business class flights from St. Louis to Baltimore?

Yes. Cheapflights offers flight deals from St. Louis to Baltimore by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$92+ Flights from St. Louis to Baltimore

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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

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Cheapflights Tip: The best prices from Lambert-St Louis to Baltimore/Washington are usually found in September or March, booked 75 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

Cheap flight deals from St. Louis to Baltimore

Most accurate provider	Mytrip 3 stars
Most trusted provider	Mytrip 3 stars
Round-trip from	$198 (Booking.com)
One-way from	$102 (Cheapflightsfares)
Popular in	December
Cheapest in	September
Average price	$295

Provider with most accurate pricing for Lambert-St Louis-Baltimore/Washington flight deals.

Search Deals

Provider most trusted by Cheapflights users for Lambert-St Louis-Baltimore/Washington flights.

Search Deals

From Lambert-St Louis to Baltimore/Washington

Search Deals

One-way flight from Lambert-St Louis to Baltimore/Washington

Search Deals

Highest demand for flights based on searches. 10% potential increase in price ($39 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

Find flight deals from St. Louis to Baltimore

Cheapest flights from St. Louis to Baltimore
Explore the most affordable flight options available from St. Louis to Baltimore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 25, 2025.

Thu 5/85:45 pmSTL - BWI

1 stop23h 51mFrontier

Tue 5/1310:40 amBWI - STL

1 stop14h 26mFrontier

Deal found 4/24

$198

Sun 5/2510:10 amSTL - BWI

1 stop11h 31mMultiple Airlines

Thu 5/292:14 pmBWI - STL

1 stop10h 38mMultiple Airlines

Deal found 4/24

$213

Tue 6/35:00 amSTL - BWI

1 stop3h 59mAmerican Airlines

Wed 6/41:45 pmBWI - STL

1 stop5h 22mAmerican Airlines

Deal found 4/24

$235

Wed 5/216:00 amSTL - BWI

1 stop5h 47mDelta

Thu 5/296:35 pmBWI - STL

1 stop6h 03mDelta

Deal found 4/24

$249

Thu 6/126:12 pmSTL - BWI

1 stop11h 52mSpirit Airlines

Sun 6/152:08 pmBWI - STL

1 stop3h 56mSpirit Airlines

Deal found 4/25

$251

Mon 6/29:10 pmSTL - BWI

Nonstop2h 00mSouthwest

Wed 6/41:30 pmBWI - STL

1 stop4h 15mSouthwest

Deal found 4/23

$258

Mon 5/265:00 amSTL - BWI

1 stop4h 13mUnited Airlines

Fri 5/306:40 amBWI - STL

1 stop5h 05mUnited Airlines

Deal found 4/24

$354

Best flights from St. Louis to Baltimore
Discover carefully curated flight deals from St. Louis to Baltimore that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 25, 2025.

Thu 5/85:45 pmSTL - BWI

1 stop23h 51mFrontier

Tue 5/1310:40 amBWI - STL

1 stop14h 26mFrontier

Deal found 4/24

$198

Sun 5/2510:10 amSTL - BWI

1 stop11h 31mMultiple Airlines

Thu 5/292:14 pmBWI - STL

1 stop10h 38mMultiple Airlines

Deal found 4/24

$213

Tue 6/35:00 amSTL - BWI

1 stop3h 59mAmerican Airlines

Wed 6/41:45 pmBWI - STL

1 stop5h 22mAmerican Airlines

Deal found 4/24

$235

Wed 5/216:00 amSTL - BWI

1 stop5h 47mDelta

Thu 5/296:35 pmBWI - STL

1 stop6h 03mDelta

Deal found 4/24

$249

Thu 6/126:12 pmSTL - BWI

1 stop11h 52mSpirit Airlines

Sun 6/152:08 pmBWI - STL

1 stop3h 56mSpirit Airlines

Deal found 4/25

$251

Mon 6/29:10 pmSTL - BWI

Nonstop2h 00mSouthwest

Wed 6/41:30 pmBWI - STL

1 stop4h 15mSouthwest

Deal found 4/23

$258

Mon 5/265:00 amSTL - BWI

1 stop4h 13mUnited Airlines

Fri 5/306:40 amBWI - STL

1 stop5h 05mUnited Airlines

Deal found 4/24

$354

Last-minute flights from St. Louis to Baltimore
Discover last-minute flight deals from St. Louis to Baltimore. Data last updated April 25, 2025 and is based on user searches.

Thu 5/16:10 pmSTL - BWI

1 stop5h 46mSpirit Airlines

Sun 5/46:50 amBWI - STL

1 stop11h 25mSpirit Airlines

Deal found 4/24

$384

Fri 5/25:55 pmSTL - BWI

1 stop23h 41mFrontier

Mon 5/59:21 pmBWI - STL

1 stop27h 45mFrontier

Deal found 4/24

$228

Fri 5/25:55 pmSTL - BWI

1 stop23h 41mMultiple Airlines

Sun 5/46:50 amBWI - STL

1 stop11h 25mMultiple Airlines

Deal found 4/24

$296

Fri 5/25:45 amSTL - BWI

Nonstop2h 00mSouthwest

Sun 5/117:35 pmBWI - STL

Nonstop2h 15mSouthwest

Deal found 4/25

$449

Fri 5/212:51 pmSTL - BWI

1 stop4h 54mDelta

Sun 5/115:28 pmBWI - STL

1 stop4h 21mDelta

Deal found 4/25

$469

Fri 5/23:29 pmSTL - BWI

2 stops7h 55mAmerican Airlines

Sun 5/46:40 amBWI - STL

1 stop7h 13mAmerican Airlines

Deal found 4/24

$864

Fri 5/26:30 amSTL - BWI

1 stop10h 35mAlaska Airlines

Sat 5/107:06 amBWI - STL

1 stop17h 53mAlaska Airlines

Deal found 4/25

$1,008

Sat 5/33:43 pmSTL - BWI

1 stop4h 54mUnited Airlines

Mon 5/1210:50 amBWI - STL

1 stop4h 57mUnited Airlines

Deal found 4/24

$534

Thu 5/85:45 pmSTL - BWI

1 stop23h 51mFrontier

Tue 5/1310:40 amBWI - STL

1 stop14h 26mFrontier

Deal found 4/24

$198

Sun 5/1810:10 amSTL - BWI

2 stops37h 07mSpirit Airlines

Wed 5/212:59 pmBWI - STL

2 stops19h 16mSpirit Airlines

Deal found 4/23

$283

Wed 5/216:00 amSTL - BWI

1 stop5h 47mDelta

Thu 5/296:35 pmBWI - STL

1 stop6h 03mDelta

Deal found 4/24

$249

Sun 5/2510:10 amSTL - BWI

1 stop11h 31mMultiple Airlines

Thu 5/292:14 pmBWI - STL

1 stop10h 38mMultiple Airlines

Deal found 4/24

$213

One-way flights from St. Louis to Baltimore
Search for one-way flight options from St. Louis to Baltimore. Find affordable one-way fares based on user searches. Data last updated April 25, 2025.

Sun 5/2510:10 amSTL - BWI

1 stop11h 31mSpirit Airlines

Deal found 4/25

$102

Tue 5/135:45 pmSTL - BWI

1 stop20h 50mFrontier

Deal found 4/24

$104

Tue 5/275:40 pmSTL - BWI

1 stop6h 08mDelta

Deal found 4/24

$113

Sun 5/187:30 amSTL - BWI

1 stop27h 00mSun Country Air

Deal found 4/25

$128

Sun 5/255:35 pmSTL - BWI

Nonstop2h 00mSouthwest

Deal found 4/24

$132

Sat 5/316:47 pmSTL - BWI

1 stop4h 06mAmerican Airlines

Deal found 4/24

$145

Sat 6/218:05 amSTL - BWI

1 stop4h 52mUnited Airlines

Deal found 4/24

$167

Mon 6/97:00 amSTL - BWI

3 stops33h 48mMultiple Airlines

Deal found 4/25

$173

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Thu 5/8

5:45 pm-6:36 pm

1 stop23h 51m

Baltimore/Washington

Tue 5/13

10:40 am-12:06 am

1 stop14h 26m

$198

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Sun 5/25

10:10 am-10:41 pm

1 stop11h 31m

Baltimore/Washington

Thu 5/29

2:14 pm-11:52 pm

1 stop10h 38m

$213

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Tue 6/3

5:00 am-9:59 am

1 stop3h 59m

Baltimore/Washington

Wed 6/4

1:45 pm-6:07 pm

1 stop5h 22m

$235

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Wed 5/21

6:00 am-12:47 pm

1 stop5h 47m

Baltimore/Washington

Thu 5/29

6:35 pm-11:38 pm

1 stop6h 03m

$249

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Thu 6/12

6:12 pm-7:04 am

1 stop11h 52m

Baltimore/Washington

Sun 6/15

2:08 pm-5:04 pm

1 stop3h 56m

$251

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Mon 6/2

9:10 pm-12:10 am

Nonstop2h 00m

Baltimore/Washington

Wed 6/4

1:30 pm-4:45 pm

1 stop4h 15m

$258

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Mon 5/26

5:00 am-10:13 am

1 stop4h 13m

Baltimore/Washington

Fri 5/30

6:40 am-10:45 am

1 stop5h 05m

$354

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Sat 5/24

10:10 am-6:52 pm

1 stop7h 42m

$92

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Tue 5/13

5:45 pm-3:35 pm

1 stop20h 50m

$104

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Tue 5/27

5:40 pm-12:48 am

1 stop6h 08m

$113

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/25

Showing 1-10 of 15 results

Compare providers for flights from St. Louis to Baltimore

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Baltimore in April.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*2 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
FareScan	Price Accuracy-	Trust Score*3 stars
Mytrip	Price Accuracy3 stars	Trust Score*3 stars
Cheapflightsfares	Price Accuracy3 stars	Trust Score*2 stars
CheapOair	Price Accuracy1 star	Trust Score*3 stars
Priceline	Price Accuracy1 star	Trust Score*3 stars
Cheapfaremart	Price Accuracy-	Trust Score*1 star
Trip.com	Price Accuracy1 star	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on St. Louis-Baltimore flights, users find the pricing of Mytrip to be most consistent on Cheapflights vs. Mytrip Users can find the same prices on St. Louis-Baltimore flight deals on Cheapflights vs. Mytrip >95% of the time. Price accuracy is based on data collected from St. Louis-Baltimore flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on St. Louis-Baltimore flights, Cheapflights users trust Mytrip the most. Mytrip has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Baltimore flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from St. Louis to Baltimore

Have a flexible travel schedule? Discover the best time to fly to Baltimore from St. Louis 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 St. Louis to Baltimore

How far ahead should I book a flight from St. Louis to Baltimore?

Booking 39 days in advance of your planned departure date is, on average, the best time to get cheap flights from St. Louis to Baltimore. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from St. Louis to Baltimore?

Currently, August is the cheapest month in which you can book a flight from St. Louis to Baltimore (average of $241). Flying from St. Louis to Baltimore in March is currently the most expensive (average of $290). 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 STL to BWI?

It’s typically best to fly out from St. Louis to Baltimore at noon. Doing so could potentially save you 4% on the flight price compared to flying in the evening, which is usually more expensive.

What is the cheapest day to fly from St. Louis to Baltimore?

Travelers seeking maximum savings on their St. Louis to Baltimore flight should consider departing on Thursday at noon when fares are most often at their lowest. Tuesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Baltimore by month

In terms of precipitation, rainfall in Baltimore ranges from 2.9 - 4.1 inches per month. July is typically the wettest month, when rainfall can reach 4.1 in. February is typically the driest time to visit Baltimore when rainfall is around 2.9 in.

Temperature in Baltimore by month

If weather is an important factor for your trip to Baltimore, 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 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 33.8 F).

Reviews of airlines servicing Baltimore

Read reviews from past customers who have flown Southwest, Delta and United Airlines from St. Louis to Baltimore. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.0

Very good

4,289 reviews

Reviews

1 / 20

10.0

Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!

Southwest

8.0

Very good

4,289 reviews

Southwest

8.0

Very good

4,289 reviews

Reviews

1 / 20

10.0

Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!

Delta

8.0

Very good

7,920 reviews

Southwest

8.0

Very good

4,289 reviews

Reviews

1 / 20

10.0

Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!

United Airlines

7.4

Good

8,685 reviews

Southwest

8.0

Very good

4,289 reviews

Reviews

1 / 20

10.0

Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!

American Airlines

7.2

Good

10,000 reviews

Southwest

8.0

Very good

4,289 reviews

Reviews

1 / 20

10.0

Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!

Sun Country Air

6.9

Okay

347 reviews

Southwest

8.0

Very good

4,289 reviews

Reviews

1 / 20

10.0

Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!

Related info for your journey

What airports do I use to fly from St. Louis to Baltimore?
Baltimore/Washington is the airport most travelers will use when flying to Baltimore from Lambert-St Louis. Booking flights from Lambert-St Louis (STL) to Baltimore/Washington (BWI) should be relatively easy as there are 4 daily flights to Baltimore from 5 different airlines. 1h 55m is how long a flight from St. Louis to Baltimore/Washington will take if you book a nonstop flight.
How popular is this St. Louis to Baltimore flight route?
Within the past month, 12 users have taken a look at flights from Lambert-St Louis to Baltimore/Washington.
What are the cheapest airlines flying from St. Louis to Baltimore round-trip?
Frontier, at $198, was found to be the cheapest airline from St. Louis to Baltimore.Alternate airlines to your destination round-trip include American Airlines and Delta. Frontier is 39% cheaper than the average price of flights available within the next 90 days to this destination.
What are the cheapest airlines to fly from St. Louis to Baltimore one-way?
For one-way options, check prices for Spirit Airlines. According to our data, you can fly for as low as $102. Users have also found prices from $104 and $113 on Frontier and Delta, respectively.
What are the cheapest flights from St. Louis to Baltimore?
The cheapest flight price from St. Louis to Baltimore is $108. On average you can expect to pay $293. The most popular route, (Lambert-St Louis - Baltimore/Washington), can usually be booked for $203.
Can I find deals for flights from St. Louis to Baltimore that include hotel bookings?
Yes. In addition to deals on St. Louis to Baltimore flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from St. Louis to Baltimore?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Baltimore.
Can I find deals for business class flights from St. Louis to Baltimore?
Yes. Cheapflights offers flight deals from St. Louis to Baltimore 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 St. Louis to Baltimore?
Currently, August is the cheapest month in which you can book a flight from St. Louis to Baltimore (average of $241). Flying from St. Louis to Baltimore in March is currently the most expensive (average of $290). 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

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for St. Louis to Baltimore

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West Baltimore car rentals

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North Baltimore car rentals

Mount Vernon car rentals

East Baltimore car rentals

Top 5 airlines flying from St. Louis to Baltimore

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$108	Average$197	FlexibilityNo cancel fee	On-time62%
American Airlines	Cheapest$176	Average$370	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$186	Average$340	FlexibilityNo cancel fee	On-timeN/A
Southwest	Cheapest$197	Average$376	FlexibilityNo cancel fee	On-time63%
United Airlines	Cheapest$232	Average$354	FlexibilityNo cancel fee	On-time69%

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$92+ Cheap flights from St. Louis to Baltimore (STL - BWI)

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 5/24. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to Baltimore with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Lambert-St Louis to Baltimore/Washington are usually found in September or March, booked 75 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

Cheap flight deals from St. Louis to Baltimore

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from St. Louis to Baltimore

Cheapest flights from St. Louis to BaltimoreExplore the most affordable flight options available from St. Louis to Baltimore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 25, 2025.

Explore the most affordable flight options available from St. Louis to Baltimore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 25, 2025.

Cheapflights Fare Finder

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

Compare providers for flights from St. Louis to Baltimore

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Baltimore in April.

Best time to book a flight from St. Louis to Baltimore

Have a flexible travel schedule? Discover the best time to fly to Baltimore from St. Louis with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Baltimore

How far ahead should I book a flight from St. Louis to Baltimore?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Baltimore. Price data was last updated on April 18, 2025.

What is the cheapest month to book a flight from St. Louis to Baltimore?

What is the cheapest time of day to fly from STL to BWI?

Find hourly flight availability from St. Louis to Baltimore. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 25, 2025.

What is the cheapest day to fly from St. Louis to Baltimore?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Baltimore. Price data was last updated on March 30, 2025.

Rainfall in Baltimore by month

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

Temperature in Baltimore by month

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

Reviews of airlines servicing Baltimore

Read reviews from past customers who have flown Southwest, Delta and United Airlines from St. Louis to Baltimore. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Baltimore. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airports do I use to fly from St. Louis to Baltimore?

How popular is this St. Louis to Baltimore flight route?

What are the cheapest airlines flying from St. Louis to Baltimore round-trip?

What are the cheapest airlines to fly from St. Louis to Baltimore one-way?

What are the cheapest flights from St. Louis to Baltimore?

Can I find deals for flights from St. Louis to Baltimore that include hotel bookings?

How can I find direct flights from St. Louis to Baltimore?

Can I find deals for business class flights from St. Louis to Baltimore?

What is the cheapest month to book a flight from St. Louis to Baltimore?

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 St. Louis to Baltimore

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Top 5 airlines flying from St. Louis to Baltimore

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Cheapest flights from St. Louis to Baltimore
Explore the most affordable flight options available from St. Louis to Baltimore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 25, 2025.