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

STL — BWI
Aug 16 — Aug 231

The best prices from Lambert-St Louis to Baltimore/Washington are usually found in September or October, booked 29 days in advance, depart on a Thursday or Tuesday and return on a Saturday

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

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

STL - BWI

Price

$190 - $446

BWI

Temperature

33.8 - 77 °F

BWI

Rainfall

2.9 - 4.1 inches

Popular inJuneHigh demand for flights, 31% potential price rise
Cheapest inSeptemberBest time to find cheap flights, 38% potential price drop
Round-trip from$190From Lambert-St Louis to Baltimore/Washington
One-way from$120One-way flight from Lambert-St Louis to Baltimore/Washington

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

Departing on a Wednesday is a good option for securing a great price. You can expect to save up to 50% 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 42 days in advance to save up to 27% 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 42 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 $325, or $392 for flights within the next 24 hours.

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

October can be a great time to fly to Baltimore from St. Louis with a flight ticket averaging about $286. Cheapflights users have found deals in the month of October for as cheap as $157. The most expensive prices can be found in the month of June.

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

It’s typically best to fly out from St. Louis to Baltimore in the morning. Doing so could potentially save you 9% on the flight price compared to flying at noon, which is usually more expensive.

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

The best prices found for STL to BWI flights for August, September
Sep 14 - Sep 17
STL

Lambert-St Louis

BWI

Baltimore/Washington

1 stop

20h 00m
BWI

Baltimore/Washington

STL

Lambert-St Louis

1 stop

6h 17m
$128

Multiple Airlines

Pick Dates

Deal found 8/8/22

Sep 7 - Sep 14
STL

Lambert-St Louis

BWI

Baltimore/Washington

1 stop

20h 00m
BWI

Baltimore/Washington

STL

Lambert-St Louis

1 stop

6h 22m
$136

Multiple Airlines

Pick Dates

Deal found 9/8/22

Sep 13 - Sep 16
STL

Lambert-St Louis

BWI

Baltimore/Washington

1 stop

19h 28m
BWI

Baltimore/Washington

STL

Lambert-St Louis

1 stop

21h 31m
$145

Spirit Airlines

Pick Dates

Deal found 10/8/22

St. Louis to Baltimore 2022 flight deals

Cheap flights to Baltimore from St. Louis found for this year
Sep 14 - Sep 17
STL

Lambert-St Louis

BWI

Baltimore/Washington

1 stop

20h 00m
BWI

Baltimore/Washington

STL

Lambert-St Louis

1 stop

6h 17m
$128

Multiple Airlines

Pick Dates

Deal found 8/8/22

Sep 7 - Sep 14
STL

Lambert-St Louis

BWI

Baltimore/Washington

1 stop

20h 00m
BWI

Baltimore/Washington

STL

Lambert-St Louis

1 stop

6h 22m
$136

Multiple Airlines

Pick Dates

Deal found 9/8/22

Sep 13 - Sep 16
STL

Lambert-St Louis

BWI

Baltimore/Washington

1 stop

19h 28m
BWI

Baltimore/Washington

STL

Lambert-St Louis

1 stop

21h 31m
$145

Spirit Airlines

Pick Dates

Deal found 10/8/22

Cheap Spirit Airlines flights from St. Louis to Baltimore

Sep 13 - Sep 16
STL

Lambert-St Louis

BWI

Baltimore/Washington

1 stop

19h 28m
BWI

Baltimore/Washington

STL

Lambert-St Louis

1 stop

21h 31m
$145

Spirit Airlines

Pick Dates

Deal found 10/8/22

Sep 29 - Oct 3
STL

Lambert-St Louis

BWI

Baltimore/Washington

1 stop

5h 44m
BWI

Baltimore/Washington

STL

Lambert-St Louis

1 stop

21h 31m
$149

Spirit Airlines

Pick Dates

Deal found 10/8/22

Sep 27 - Sep 29
STL

Lambert-St Louis

BWI

Baltimore/Washington

1 stop

19h 28m
BWI

Baltimore/Washington

STL

Lambert-St Louis

1 stop

11h 46m
$153

Spirit Airlines

Pick Dates

Deal found 10/8/22

Cheap Frontier flights from St. Louis to Baltimore

Aug 26 - Aug 30
STL

Lambert-St Louis

BWI

Baltimore/Washington

1 stop

6h 59m
BWI

Baltimore/Washington

STL

Lambert-St Louis

1 stop

11h 36m
$164

Frontier

Pick Dates

Deal found 10/8/22

Sep 9 - Sep 13
STL

Lambert-St Louis

BWI

Baltimore/Washington

1 stop

4h 33m
BWI

Baltimore/Washington

STL

Lambert-St Louis

1 stop

11h 32m
$165

Frontier

Pick Dates

Deal found 8/8/22

Aug 25 - Aug 26
STL

Lambert-St Louis

BWI

Baltimore/Washington

1 stop

9h 33m
BWI

Baltimore/Washington

STL

Lambert-St Louis

1 stop

15h 48m
$168

Frontier

Pick Dates

Deal found 9/8/22

Last minute flights from St. Louis to Baltimore

Late deals on return flights to Baltimore from St. Louis, departing today and this week
Aug 17 - Aug 22
STL

Lambert-St Louis

BWI

Baltimore/Washington

1 stop

22h 31m
BWI

Baltimore/Washington

STL

Lambert-St Louis

1 stop

13h 26m
$179

Multiple Airlines

Pick Dates

Deal found 8/8/22

Aug 18 - Aug 22
STL

Lambert-St Louis

BWI

Baltimore/Washington

1 stop

10h 35m
BWI

Baltimore/Washington

STL

Lambert-St Louis

1 stop

17h 52m
$190

Spirit Airlines

Pick Dates

Deal found 8/8/22

Aug 17 - Aug 22
STL

Lambert-St Louis

BWI

Baltimore/Washington

1 stop

22h 31m
BWI

Baltimore/Washington

STL

Lambert-St Louis

1 stop

17h 52m
$199

Multiple Airlines

Pick Dates

Deal found 10/8/22

One-way flights to Baltimore from St. Louis

The cheapest one-way flights from St. Louis to Baltimore
Sep 3
STL

Lambert-St Louis

BWI

Baltimore/Washington

1 stop

23h 07m
$64

Frontier

Pick Dates

Deal found 9/8/22

Sep 9
STL

Lambert-St Louis

BWI

Baltimore/Washington

1 stop

5h 44m
$74

Spirit Airlines

Pick Dates

Deal found 10/8/22

Sep 9
STL

Lambert-St Louis

BWI

Baltimore/Washington

1 stop

27h 45m
$75

Multiple Airlines

Pick Dates

Deal found 8/8/22

Related info for your journey

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

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 5 daily flights to Baltimore from 8 different airlines. 5h 54m is how long a flight from St. Louis to Baltimore/Washington will take if you book a nonstop flight.

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

American Airlines, Delta, and Spirit Airlines are some of the carriers that may have flexible cancellation policies. You can use our site to filter for other airlines that may also have this kind of flexibility.

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

Yes, there are multiple flights from St. Louis to Baltimore for under $200. The cheapest flight booked recently is on Multiple Airlines for just $128, but on average you can expect to pay $159.

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

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

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

Within the past month, 20 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?

Spirit Airlines, at $145, was found to be the cheapest airline from St. Louis to Baltimore. An alternate airline flying to your destination would be Frontier. Spirit Airlines is 52% cheaper than the average price of flights available within the next 90 days to this destination.

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

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

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

The cheapest flight price from St. Louis to Baltimore is $88. On average you can expect to pay $592. The most popular route, (Lambert-St Louis - Baltimore/Washington), can usually be booked for $136.

Alternative routes for St. Louis to Baltimore

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

Top 4 airlines flying from St. Louis to Baltimore

The chart below displays the airlines Cheapflights users traveling from St. Louis to Baltimore choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
American AirlinesCheapest$126Average$361FlexibilityNo cancel feeOn-time71%COVID-19 safety
Search American Airlines flights
United AirlinesCheapest$131Average$211FlexibilityNo cancel feeOn-time69%COVID-19 safety
Search United Airlines flights
Spirit AirlinesCheapest$134Average$237FlexibilityNo cancel feeOn-time65%COVID-19 safety
Search Spirit Airlines flights
DeltaCheapest$170Average$338FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search Delta flights

Hourly flight availability from St. Louis to Baltimore

See what time of day planes typically take off from St. Louis to Baltimore
3%of flight departuresEarly morningMidnight to 6 am
48%of flight departuresMorning6 am to noon
32%of flight departuresAfternoonNoon to 6 pm
17%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from St. Louis to Baltimore

See how many times per day planes take to the skies headed from St. Louis to Baltimore
Sunday5daily flights
Monday5daily flights
Tuesday5daily flights
Wednesday5daily flights
Thursday5daily flights
Friday5daily flights
Saturday5daily flights