Find Cheap Flights from Lambert-St Louis to Baltimore/Washington (STL - BWI)

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Sat 12/16
Sat 12/23
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Good to Know

Low Season:
August
Best time to beat the crowds
2%
expected price decrease
High Season:
January
Most popular time to fly
3%
expected price increase
Average Price:
$329
(avg. price over the last 2 weeks)
Good Deal:
$261
or less (round trip)

When to Book Flights from Lambert-St Louis to Baltimore/Washington

Average price per month
Flight prices as travel date approaches
-1 day
-2 days

Top tips for Finding a Cheap Flight

Looking for a cheap flight? 25% of our users found flights on this route for $261 or less.
The cheapest flight from Lambert-St Louis to Baltimore/Washington was found 25 days before departure, on average.
Book at least 2 weeks before departure in order to get a below-average price.
Morning departure is around 45% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for Booking Lambert-St Louis to Baltimore/Washington Flights

How long does a flight from Lambert-St Louis to Baltimore/Washington take?
An average nonstop flight takes 3h 59m, covering a distance of 736 miles.
How many flights are there between Lambert-St Louis and Baltimore/Washington?
There are 73 (nonstop) flights between Lambert-St Louis and Baltimore/Washington per week, averaging 11 per day.
Which airlines provide the cheapest flights from Lambert-St Louis to Baltimore/Washington?
In the past 3 days, the cheapest round-trip tickets were found on Multiple Airlines ($196), American Airlines ($277) and Delta ($398).
Do I need a passport to fly between Lambert-St Louis and Baltimore/Washington?
No.
Which airlines fly most frequently between Lambert-St Louis and Baltimore/Washington?
Southwest (10 times daily) are the most frequent flyers on this route.
What’s the cheapest day of the week to fly Lambert-St Louis to Baltimore/Washington?
For Lambert-St Louis to Baltimore/Washington, Monday is the cheapest day to fly on average and Friday is the most expensive. Flying from Baltimore/Washington back to Lambert-St Louis, the best deals are generally found on Tuesday, with Friday being the most expensive.

Book cheap flights from Lambert-St Louis to Baltimore/Washington (round-trip)

Airports
Origin
St. Louis
$196
only
$196
Destination
Baltimore
$196
only
$196
Mon, Jan 8
STL
BWI
18h 52m
Tue, Jan 16
BWI
STL
19h 54m
Trip: 9 days
Overall 0.0 Poor
Based on 0 reviews
Thu, Mar 1
STL
BWI
4h 16m
Mon, Mar 5
BWI
STL
4h 47m
Trip: 5 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 26055 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
LAX
LHR
Excellent 9.2

Easy and efficient boarding for a busy flight. Efficient, attentive and intuitive cabin crew. Good in-flight entertainment and facilities.

The aircraft was extremely cold throughout the duration of the flight. Of all of the long haul airlines I've flown with, I find that American Airlines offers the least leg room.

JFK
MXP
Mediocre 2.6

Plane was old and dirty, seat pocket had junk in it. Seat was broken and couldn’t stay up. In flight movies were from few years back with a center tv and no head rest screen. Crew on overseas flights tend to be older in age and less tolerant..much better on continental on the same route.

LAX
AKL
Okay 5.6

Smooth operation, on time

Seat pitch on the plane unbelievably cramped. When seats are so close that if you drop something on the floor you have to be a contortionist to get it, you know it's a problem NEVER fly the 787-900 economy.

CLT
SJU
Mediocre 3.3

Direct flight

Horrible customer service, excessive baggage fees, rude counter staff, no leg room, narrow seats

BNA
DFW
Good 7.3

Everything else

Fri, Apr 6
STL
BWI
5h 00m
Sun, Apr 8
BWI
STL
5h 39m
Trip: 3 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 14257 reviews
Overall
8.0
Boarding
8.1
Comfort
7.7
Crew
8.4
Entertainment
7.5
Food
7.3
JFK
MIA
Okay 5.3

Some of the flight attendants were rude and not very welcoming at all.

JFK
ATL
Excellent 8.3

We had the best flight attendant ever! Her name was Sharon on Eandeavor / Delta Cnx, and she made the experience the best flight I've experienced. Thanks Sharon for being awesome!

window seat in back didn't have window

ATL
DFW
Excellent 10.0

My entire flight experience was delightful. Was dry impressed with the staff both at Hartsfield-Jackson and DFW...and our flight crew was positively sublime.

ATL
ABE
Okay 4.0

Long wait for de-Icing. Got on and off the plane 3 times. First wait was 1 hour, but plane aborted takeoff. Second plane waited at gate with all aboard for 2-1/2 hours and never got slot and de-planed. Third plane waited 1-1/2 hours for de-Icing and finally we were headed home. Arrived 8.5 hours after schedule.

ZAG
CDG
Good 6.0

Old plane, bad food & old crew

Mon, Feb 12
STL
BWI
19h 51m
Wed, Feb 14
BWI
STL
8h 26m
Trip: 3 days
Overall 0.0 Poor
Based on 0 reviews
Thu, Mar 15
STL
BWI
5h 56m
Tue, Mar 27
BWI
STL
6h 13m
Trip: 13 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 26055 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
DFW
SCL
Excellent 9.6

The food is very tasty, but AA has not changed the menu in at least one year.

LAX
LHR
Excellent 9.2

Easy and efficient boarding for a busy flight. Efficient, attentive and intuitive cabin crew. Good in-flight entertainment and facilities.

The aircraft was extremely cold throughout the duration of the flight. Of all of the long haul airlines I've flown with, I find that American Airlines offers the least leg room.

LAX
AKL
Okay 5.6

Smooth operation, on time

Seat pitch on the plane unbelievably cramped. When seats are so close that if you drop something on the floor you have to be a contortionist to get it, you know it's a problem NEVER fly the 787-900 economy.

CLE
JFK
Mediocre 3.3

Plane was dirty and crew inattentive.

JFK
CDG
Mediocre 2.0

Nothing. From the plane to the awful delay and poor service.

Lack of communication. Old plane, no comfort and 6 HOURS DELAYED. Truly disappointed by the airline

Wed, Feb 21
STL
BWI
9h 37m
Thu, Feb 22
BWI
STL
19h 52m
Trip: 2 days
Overall 0.0 Poor
Based on 0 reviews
Tue, Jun 19
STL
BWI
4h 30m
Tue, Jun 26
BWI
STL
10h 10m
Trip: 8 days
Overall 0.0 Poor
Based on 0 reviews
Sat, Dec 23
STL
BWI
4h 43m
Sun, Dec 31
BWI
STL
4h 34m
Trip: 9 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 26055 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
CLT
SJU
Mediocre 3.3

Direct flight

Horrible customer service, excessive baggage fees, rude counter staff, no leg room, narrow seats

BNA
DFW
Good 7.3

Everything else

ATL
CLT
Excellent 9.6

The flight was late

JFK
CDG
Mediocre 2.0

Nothing. From the plane to the awful delay and poor service.

Lack of communication. Old plane, no comfort and 6 HOURS DELAYED. Truly disappointed by the airline

LAX
AKL
Okay 5.6

Smooth operation, on time

Seat pitch on the plane unbelievably cramped. When seats are so close that if you drop something on the floor you have to be a contortionist to get it, you know it's a problem NEVER fly the 787-900 economy.

Mon, Dec 25
STL
BWI
6h 02m
Thu, Dec 28
BWI
STL
5h 01m
Trip: 4 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 26055 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
CLT
SJU
Mediocre 3.3

Direct flight

Horrible customer service, excessive baggage fees, rude counter staff, no leg room, narrow seats

SFO
DFW
Excellent 10.0

On time. Comfortable seat. Courteous crew. Easy transfer.

CLE
JFK
Mediocre 3.3

Plane was dirty and crew inattentive.

YUL
MIA
Excellent 10.0

First time flyer with American airlines and the service was impeccable

Nothing to dislike

LAX
LHR
Excellent 9.2

Easy and efficient boarding for a busy flight. Efficient, attentive and intuitive cabin crew. Good in-flight entertainment and facilities.

The aircraft was extremely cold throughout the duration of the flight. Of all of the long haul airlines I've flown with, I find that American Airlines offers the least leg room.

Mon, Dec 18
STL
BWI
3h 59m
Wed, Dec 20
BWI
STL
5h 59m
Trip: 3 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 14257 reviews
Overall
8.0
Boarding
8.1
Comfort
7.7
Crew
8.4
Entertainment
7.5
Food
7.3
SEA
LAX
Okay 5.3

Mu seat!

My baggage took for to long to arrive

AMS
DTW
Mediocre 2.0

The most horrible experience. Pathetic to say the least. No water in the flight lavotries. Such a pathetic service from so called top airline.

LGA
ORD
Excellent 10.0

Flight was on time. Boarded quickly with no fuss.

ATL
DFW
Excellent 10.0

My entire flight experience was delightful. Was dry impressed with the staff both at Hartsfield-Jackson and DFW...and our flight crew was positively sublime.

GSO
ATL
Excellent 10.0

Plane nice and comfortable

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*
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The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.