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

BWI — STL
Oct 4 — Oct 111

The best prices from Baltimore/Washington to Lambert-St Louis are usually found in January or October, booked 54 days in advance, depart on a Saturday or Monday and return on a Thursday

How to find the cheapest flight from Baltimore (BWI) to St. Louis (STL)

All the information you need to plan the best BWI to STL flight in 2022: compare Baltimore to St. Louis flight prices with the expected peak season, weather and rainfall in St. Louis.

BWI - STL

Price

$193 - $447

STL

Temperature

32 - 80.6 °F

STL

Rainfall

2.2 - 4.7 inches

Popular inJulyHigh demand for flights, 31% potential price rise
Cheapest inJanuaryBest time to find cheap flights, 37% potential price drop
Round-trip from$193From Baltimore/Washington to Lambert-St Louis
One-way from$135One-way flight from Baltimore/Washington to Lambert-St Louis

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

Users have found that leaving on a Friday can be a cost-effective option. It’s possible to save up to 53% on your flight compared to booking on days when demand is much higher.

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

To save on the cost of your flight from Baltimore to St. Louis, book at least 30 days before your planned departure. Booking around this time can save you about 29% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $337 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $397.

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

January is one of the best times of the year to fly to St. Louis from Baltimore. Prices for January average $317 per person but you can even find prices for as low as $157. The most expensive prices can be found in the month of June. Opting for a January flight can save you 26% on your journey compared to booking in June

When is the cheapest time to fly from Baltimore to St. Louis (BWI - STL)?

One of the essential ways to save on airfare from Baltimore to St. Louis is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 31% on airfare.

Cheap flights from Baltimore to St. Louis in September, October 2022

The best prices found for BWI to STL flights for September, October
Oct 29 - Nov 2
BWI

Baltimore/Washington

STL

Lambert-St Louis

1 stop

12h 10m
STL

Lambert-St Louis

BWI

Baltimore/Washington

1 stop

5h 12m
$127

Multiple Airlines

Pick Dates

Deal found 9/26/22

Oct 19 - Oct 22
BWI

Baltimore/Washington

STL

Lambert-St Louis

1 stop

6h 26m
STL

Lambert-St Louis

BWI

Baltimore/Washington

1 stop

5h 12m
$131

Multiple Airlines

Pick Dates

Deal found 9/26/22

Oct 3 - Oct 26
BWI

Baltimore/Washington

STL

Lambert-St Louis

1 stop

29h 43m
STL

Lambert-St Louis

BWI

Baltimore/Washington

1 stop

5h 12m
$140

Multiple Airlines

Pick Dates

Deal found 9/26/22

Baltimore to St. Louis 2022 flight deals

Cheap flights to St. Louis from Baltimore found for this year
Oct 29 - Nov 2
BWI

Baltimore/Washington

STL

Lambert-St Louis

1 stop

12h 10m
STL

Lambert-St Louis

BWI

Baltimore/Washington

1 stop

5h 12m
$127

Multiple Airlines

Pick Dates

Deal found 9/26/22

Oct 19 - Oct 22
BWI

Baltimore/Washington

STL

Lambert-St Louis

1 stop

6h 26m
STL

Lambert-St Louis

BWI

Baltimore/Washington

1 stop

5h 12m
$131

Multiple Airlines

Pick Dates

Deal found 9/26/22

Oct 3 - Oct 26
BWI

Baltimore/Washington

STL

Lambert-St Louis

1 stop

29h 43m
STL

Lambert-St Louis

BWI

Baltimore/Washington

1 stop

5h 12m
$140

Multiple Airlines

Pick Dates

Deal found 9/26/22

Cheap Frontier flights from Baltimore to St. Louis

Oct 18 - Oct 19
BWI

Baltimore/Washington

STL

Lambert-St Louis

1 stop

12h 11m
STL

Lambert-St Louis

BWI

Baltimore/Washington

1 stop

16h 32m
$164

Frontier

Pick Dates

Deal found 9/26/22

Oct 4 - Oct 5
BWI

Baltimore/Washington

STL

Lambert-St Louis

1 stop

11h 32m
STL

Lambert-St Louis

BWI

Baltimore/Washington

1 stop

16h 32m
$171

Frontier

Pick Dates

Deal found 9/29/22

Oct 17 - Oct 21
BWI

Baltimore/Washington

STL

Lambert-St Louis

1 stop

6h 19m
STL

Lambert-St Louis

BWI

Baltimore/Washington

1 stop

23h 57m
$184

Frontier

Pick Dates

Deal found 9/29/22

Cheap Spirit Airlines flights from Baltimore to St. Louis

Oct 12 - Oct 15
BWI

Baltimore/Washington

STL

Lambert-St Louis

1 stop

15h 34m
STL

Lambert-St Louis

BWI

Baltimore/Washington

1 stop

11h 13m
$166

Spirit Airlines

Pick Dates

Deal found 9/27/22

Oct 11 - Oct 14
BWI

Baltimore/Washington

STL

Lambert-St Louis

1 stop

15h 42m
STL

Lambert-St Louis

BWI

Baltimore/Washington

1 stop

25h 57m
$168

Spirit Airlines

Pick Dates

Deal found 9/26/22

Oct 17 - Oct 19
BWI

Baltimore/Washington

STL

Lambert-St Louis

2 stops

27h 39m
STL

Lambert-St Louis

BWI

Baltimore/Washington

1 stop

11h 08m
$189

Spirit Airlines

Pick Dates

Deal found 9/27/22

Last minute flights from Baltimore to St. Louis

Late deals on return flights to St. Louis from Baltimore, departing today and this week
Oct 4 - Oct 5
BWI

Baltimore/Washington

STL

Lambert-St Louis

1 stop

11h 32m
STL

Lambert-St Louis

BWI

Baltimore/Washington

1 stop

16h 32m
$171

Frontier

Pick Dates

Deal found 9/29/22

Oct 5 - Oct 7
BWI

Baltimore/Washington

STL

Lambert-St Louis

1 stop

6h 18m
STL

Lambert-St Louis

BWI

Baltimore/Washington

1 stop

23h 57m
$185

Frontier

Pick Dates

Deal found 9/26/22

Oct 4 - Oct 7
BWI

Baltimore/Washington

STL

Lambert-St Louis

1 stop

11h 32m
STL

Lambert-St Louis

BWI

Baltimore/Washington

1 stop

23h 57m
$191

Frontier

Pick Dates

Deal found 9/26/22

One-way flights to St. Louis from Baltimore

The cheapest one-way flights from Baltimore to St. Louis
Oct 19
BWI

Baltimore/Washington

STL

Lambert-St Louis

1 stop

6h 26m
$65

Multiple Airlines

Pick Dates

Deal found 9/28/22

Oct 11
BWI

Baltimore/Washington

STL

Lambert-St Louis

1 stop

24h 28m
$74

Frontier

Pick Dates

Deal found 9/27/22

Oct 4
BWI

Baltimore/Washington

STL

Lambert-St Louis

1 stop

11h 32m
$75

Frontier

Pick Dates

Deal found 9/27/22

Related info for your journey

Useful info, stats and facts about Baltimore to St. Louis flights.

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

Lambert-St Louis is the airport most travelers will use when flying to St. Louis from Baltimore/Washington. Booking flights from Baltimore/Washington (BWI) to Lambert-St Louis (STL) should be relatively easy as there are 3 daily flights to St. Louis from 8 different airlines. 4h 15m is how long a flight from Baltimore to Lambert-St Louis will take if you book a nonstop flight.

Which airlines flying from Baltimore/Washington to Lambert-St Louis have flexible cancellations due to COVID-19?

Some of our airline partners flying from Baltimore/Washington to Lambert-St Louis have new flexible policies in place due to COVID-19. American Airlines, Delta, and Spirit Airlines are some of the carriers where you may find flexible cancellation policies. You can use our site to filter for airlines like American Airlines with this kind of flexibility.

Can I find flights from Baltimore to St. Louis for under $200 on Cheapflights?

Yes, there are multiple flights from Baltimore to St. Louis for under $200. The cheapest flight booked recently is on Multiple Airlines for just $127, but on average you can expect to pay $163.

Are there last-minute flights available from Baltimore to St. Louis for under $200?

There are currently 20+ open flights from Baltimore to St. Louis within the next 7 days for less than $200.

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

Flights from Baltimore/Washington to Lambert-St Louis have been viewed 16 times in the past calendar month.

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

Flying on Frontier is currently your cheapest option to St. Louis, with prices starting at $164. Another option worth looking into is Spirit Airlines, starting at $166 round trip. Users have found that Frontier is 46% cheaper than the other options available to this destination.

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

Before booking your flight from Baltimore to St. Louis check out the most popular airlines for this route: Undisclosed Carrier, American Airlines or Alaska Airlines.

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

Looking for the cheapest flight from Baltimore to St. Louis? While on average our users pay $571, our data indicates the cheapest price to be $71. The most popular route (Baltimore/Washington - Lambert-St Louis), is priced around $141.

Alternative routes for Baltimore to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.

Top 5 airlines flying from Baltimore to St. Louis

The chart below displays the airlines Cheapflights users traveling from Baltimore to St. Louis choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
Juneyao AirlinesCheapest$19Average$23FlexibilityNo cancel feeOn-time66%COVID-19 safety
Search Juneyao Airlines flights
Spirit AirlinesCheapest$119Average$177FlexibilityNo cancel feeOn-time65%COVID-19 safety
Search Spirit Airlines flights
United AirlinesCheapest$135Average$248FlexibilityNo cancel feeOn-time69%COVID-19 safety
Search United Airlines flights
DeltaCheapest$165Average$341FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search Delta flights
American AirlinesCheapest$186Average$368FlexibilityNo cancel feeOn-time71%COVID-19 safety
Search American Airlines flights

Hourly flight availability from Baltimore to St. Louis

See what time of day planes typically take off from Baltimore to St. Louis
23%of flight departuresEarly morningMidnight to 6 am
41%of flight departuresMorning6 am to noon
23%of flight departuresAfternoonNoon to 6 pm
13%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from Baltimore to St. Louis

See how many times per day planes take to the skies headed from Baltimore to St. Louis
Sunday0daily flights
Monday5daily flights
Tuesday4daily flights
Wednesday4daily flights
Thursday6daily flights
Friday6daily flights
Saturday0daily flights