Find Cheap Flights from Baltimore to St. Louis (WAS - STL)

Flights overview

Useful information for finding cheap flights from Baltimore to St. Louis and booking your next trip

Cheapest round-trip flights	$130	Frontier 1 stop 12 hr Thu, Feb 5 — Mon, Feb 9	The cheapest round-trip flight from Baltimore to St. Louis is currently $130
Cheapest one-way flight	$61	Frontier 1 stop 16 hr Wed, Jan 7	The cheapest one-way flight from Baltimore to St. Louis is currently $61
Cheapest nonstop flights	$249	Southwest Nonstop 3 hr Sat, Jan 17 — Sun, Jan 18	The cheapest nonstop round-trip flight from Baltimore to St. Louis is currently $249
Last-minute weekend getaway	$322	Frontier 1 stop 14 hr Thu, Nov 20 — Sun, Nov 23	The cheapest last-minute weekend getaway from Baltimore to St. Louis is currently $322
Cheapest business class flights	$517	American Nonstop 3 hr Sat, Jan 17 — Mon, Jan 19	The cheapest business class round-trip flight from Baltimore to St. Louis is currently $517

Fastest flight	2 hr 20 min	The fastest nonstop flight from Baltimore to St. Louis takes 2 hr 20 min
Nonstop flights	Every day	There are direct flights on this route every day.

When is the cheapest time to fly?

The cheapest month to fly from Baltimore to St. Louis is typically January. The most expensive month to fly is typically July.

January Cheapest	Typical prices: $115–280
July Most expensive	Typical prices: $215–295

Popular airlines from Baltimore to St. Louis

Southwest

Nonstop

from $249

Typical price: $225–450

53 weekly nonstop flights

BWI, DCA - STL Every day

1975 weekly connecting flights

BWI, DCA, IAD - STL Every day
American

Nonstop

from $249

Typical price: $215–455

24 weekly nonstop flights

DCA - STL Every day

926 weekly connecting flights

BWI, DCA, IAD - STL Every day
United

Nonstop

from $234

Typical price: $225–470

14 weekly nonstop flights

IAD - STL Every day

1110 weekly connecting flights

BWI, DCA, IAD - STL Every day
Delta

from $269

Typical price: $230–540

896 weekly connecting flights

BWI, DCA, IAD - STL Every day
Frontier

from $110

Typical price: $165–385

62 weekly connecting flights

BWI, DCA, IAD - STL Every day
Alaska

from $464

Typical price: $630–1,450

45 weekly connecting flights

BWI, DCA, IAD - STL Every day

Popular airports near Baltimore

Baltimore/Washington International Airport (BWI)

Baltimore United States 19 min 8 mi
Dulles International Airport (IAD)

Washington United States 1 hr 23 min 51 mi
Ronald Reagan Washington National Airport (DCA)

Washington United States 1 hr 2 min 38 mi
Philadelphia International Airport (PHL)

Philadelphia United States 1 hr 35 min 83 mi

Popular airports near St. Louis

St. Louis Lambert International Airport (STL)

St. Louis United States 21 min 12 mi
MidAmerica St. Louis Airport (BLV)

Belleville United States 34 min 20 mi
General Wayne A. Downing Peoria International Airport (PIA)

Peoria United States 2 hr 35 min 143 mi
Indianapolis International Airport (IND)

Indianapolis United States 3 hr 28 min 222 mi

Frequently asked questions about flying from Baltimore to St. Louis

When are the cheapest days to fly from Baltimore to St. Louis?

The cheapest flights from Baltimore to St. Louis are usually in January. Typical ticket prices in January range from $115 to $280.

Which airlines provide the cheapest flights from Baltimore to St. Louis?

The cheapest round-trip flight from Baltimore to St. Louis recently found on Google Flights was with Frontier from $130. The cheapest one-way flight was with Frontier from $61.

Some of the cheapest round-trip deals we found with different airlines:

The cheapest Southwest flight from Baltimore to St. Louis is $249, flying from Jan 17 to Jan 18.
The cheapest American flight from Baltimore to St. Louis is $249, flying from Jan 17 to Jan 18.
The cheapest United flight from Baltimore to St. Louis is $234, flying from Jan 16 to Jan 18.
The cheapest Delta flight from Baltimore to St. Louis is $269, flying from Jan 17 to Jan 18.
The cheapest Frontier flight from Baltimore to St. Louis is $110, flying from Jan 24 to Jan 26.
The cheapest Alaska flight from Baltimore to St. Louis is $464, flying from Feb 14 to Feb 15.

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

The cheapest round-trip flight from Baltimore to St. Louis starts at $130 from Thu, Feb 5 to Mon, Feb 9. The cheapest one-way flight starts at $61 and departs on Wed, Jan 7.

How long does it take to fly from Baltimore to St. Louis?

2 hr 20 min is the shortest flight time from Baltimore to St. Louis.

When should you fly to St. Louis, United States?

Apr–Sep is the most popular time to visit, coinciding with hot, humid summer and events like Fair St. Louis, a huge Fourth of July festival at Forest Park, and the Taste of St. Louis food festival (Sep). Weather in winter is cold, with occasional snow.

How do I find cheap dates to fly from Baltimore to St. Louis?

It's easy to use Google Flights to find the cheapest days to fly from Baltimore to St. Louis.
Just click the Departure label near the top of the page to open the calendar. Choose a start date and a return date to see how the round-trip fare changes on those specific days.
Adjust the trip type to see one-way fares. The cheapest available flights are highlighted and easy to spot. Once you settle on dates, click the Search button to see flight options and book the deal.

You can also turn on price tracking to get alerts if the price changes for a route or flight.

What is the best airline to fly from Baltimore to St. Louis?

What counts as the best airline for your flights from Baltimore to St. Louis really depends on your individual needs. You may have a favorite carrier or a loyalty program you like, but price, convenience, and airports served also come into play. Flexibility and booking terms – Can you change flights if you want to stay longer or get a refund if you have to postpone your trip? – are also factors that help determine which airline is best to fly from Baltimore to St. Louis.

In terms of nonstop flights, Southwest is the most popular. Southwest offers 53 nonstop flights and 1,975 connecting flights per week. Southwest flies from Baltimore/Washington International Airport (BWI) , Ronald Reagan Washington National Airport (DCA) , Dulles International Airport (IAD) to St. Louis Lambert International Airport (STL) .

Other popular airlines flying from Baltimore to St. Louis are:

American offers 24 nonstop flights and 926 connecting flights per week. American flies from Baltimore/Washington International Airport (BWI) , Ronald Reagan Washington National Airport (DCA) , Dulles International Airport (IAD) to St. Louis Lambert International Airport (STL) .
United offers 14 nonstop flights and 1,110 connecting flights per week. United flies from Baltimore/Washington International Airport (BWI) , Ronald Reagan Washington National Airport (DCA) , Dulles International Airport (IAD) to St. Louis Lambert International Airport (STL) .
Delta offers 896 connecting flights per week. Delta flies from Baltimore/Washington International Airport (BWI) , Ronald Reagan Washington National Airport (DCA) , Dulles International Airport (IAD) to St. Louis Lambert International Airport (STL) .
Frontier offers 62 connecting flights per week. Frontier flies from Baltimore/Washington International Airport (BWI) , Ronald Reagan Washington National Airport (DCA) , Dulles International Airport (IAD) to St. Louis Lambert International Airport (STL) .
Alaska offers 45 connecting flights per week. Alaska flies from Baltimore/Washington International Airport (BWI) , Ronald Reagan Washington National Airport (DCA) , Dulles International Airport (IAD) to St. Louis Lambert International Airport (STL) .

The number of connecting flights refers to distinct flights with at least one stop between Baltimore and St. Louis.

Which airlines provide the cheapest flights from Baltimore to St. Louis?

The cheapest round-trip flight from Baltimore to St. Louis recently found on Google Flights was with Frontier from $130. The cheapest one-way flight was with Frontier from $61.

Some of the cheapest round-trip deals we found with different airlines:

The cheapest Southwest flight from Baltimore to St. Louis is $249, flying from Jan 17 to Jan 18.
The cheapest American flight from Baltimore to St. Louis is $249, flying from Jan 17 to Jan 18.
The cheapest United flight from Baltimore to St. Louis is $234, flying from Jan 16 to Jan 18.
The cheapest Delta flight from Baltimore to St. Louis is $269, flying from Jan 17 to Jan 18.
The cheapest Frontier flight from Baltimore to St. Louis is $110, flying from Jan 24 to Jan 26.
The cheapest Alaska flight from Baltimore to St. Louis is $464, flying from Feb 14 to Feb 15.

Which airlines have direct flights from Baltimore to St. Louis?

Southwest, American and United fly direct from Baltimore to St. Louis.

There are 53 Southwest direct flights from Baltimore to St. Louis per week. Flights are available every day.
There are 24 American direct flights from Baltimore to St. Louis per week. Flights are available every day.
There are 14 United direct flights from Baltimore to St. Louis per week. Flights are available every day.

Use the Stops filter while searching for flights, to see only nonstop options in your results.

Which airline provides the cheapest last-minute getaway flight from Baltimore to St. Louis?

The cheapest last-minute deal between Baltimore and St. Louis at price $322 is offered by Frontier from Thu, Nov 20 to Sun, Nov 23.

Which airlines have direct flights from Baltimore to St. Louis?

Southwest, American and United fly direct from Baltimore to St. Louis.

There are 53 Southwest direct flights from Baltimore to St. Louis per week. Flights are available every day.
There are 24 American direct flights from Baltimore to St. Louis per week. Flights are available every day.
There are 14 United direct flights from Baltimore to St. Louis per week. Flights are available every day.

Use the Stops filter while searching for flights, to see only nonstop options in your results.

When are direct flights from Baltimore to St. Louis available?

There are direct flights from Baltimore to St. Louis on a daily basis.

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

The cheapest direct (nonstop) round-trip flights between Baltimore and St. Louis start at $249 from Sat, Jan 17 to Sun, Jan 18 with Southwest.

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

It's easy to find nonstop flights with Google Flights! Once you've searched for flights from Baltimore to St. Louis, just select the nonstop flights only option in the 'Stops’ filter in the search form and view all available direct flights and their prices.

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

The cheapest business class round-trip flights between Baltimore and St. Louis start at $517 from Sat, Jan 17 to Mon, Jan 19 with American.

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

The cheapest economy class round-trip flights between Baltimore and St. Louis start at $130 from Thu, Feb 5 to Mon, Feb 9.

How can I book business class trips from Baltimore to St. Louis?

To book business class trips from Baltimore to St. Louis, look for the default Economy selection at the top, and change it to your desired cabin class such as Premium Economy, Business Class, or First Class. You can then select your departure and arrival dates, consider available options, and book your business travel.

You can also adjust the trip type to view one-way fares.

Are there any last-minute deals from Baltimore to St. Louis next weekend?

The best last-minute getaway deal for the next weekend between Baltimore and St. Louis starts at $322 from Thu, Nov 20 to Sun, Nov 23 with Frontier.

Which airline provides the cheapest last-minute getaway flight from Baltimore to St. Louis?

The cheapest last-minute deal between Baltimore and St. Louis at price $322 is offered by Frontier from Thu, Nov 20 to Sun, Nov 23.

How can I find last-minute flight deals from Baltimore to St. Louis?

To find last-minute flight deals from Baltimore to St. Louis, start by entering the city names, select the desired departure and return dates, and hit the Search button to view flight options.

You can check for last-minute flights for the same day or adjust the trip type to see one-way fares.