Find Cheap Flights from Philadelphia to Lambert-St Louis (PHL - STL)

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Sat 12/16
Sat 12/23
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Good to Know

Low Season:
September
Best time to beat the crowds
1%
expected price decrease
High Season:
April
Most popular time to fly
1%
expected price increase
Average Price:
$983
(avg. price over the last 2 weeks)
Good Deal:
$983
or less (round trip)

When to Book Flights from Philadelphia to Lambert-St Louis

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

Top tips for Finding a Cheap Flight

The cheapest flight from Philadelphia to Lambert-St Louis was found 63 days before departure, on average.
Book at least 3 weeks before departure in order to get a below-average price.
High season is considered to be March, April and May. The cheapest month to fly is September.
Morning departure is around 12% cheaper 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 Philadelphia to Lambert-St Louis Flights

How long does a flight from Philadelphia to Lambert-St Louis take?
An average nonstop flight takes 2h 30m, covering a distance of 812 miles.
How many flights are there between Philadelphia and Lambert-St Louis?
There are 115 (nonstop) flights between Philadelphia and Lambert-St Louis per week, averaging 16 per day.
Which airlines provide the cheapest flights from Philadelphia to Lambert-St Louis?
In the past 3 days, the cheapest round-trip tickets were found on Frontier ($194), Multiple Airlines ($287) and American Airlines ($383).
Do I need a passport to fly between Philadelphia and Lambert-St Louis?
No.
Which airlines fly most frequently between Philadelphia and Lambert-St Louis?
American Airlines (8 times daily), Southwest (5 times daily), British Airways (2 times daily) are the most frequent flyers on this route.
What’s the cheapest day of the week to fly Philadelphia to Lambert-St Louis?
For Philadelphia to Lambert-St Louis, Tuesday is the cheapest day to fly on average and Friday is the most expensive. Flying from Lambert-St Louis back to Philadelphia, the best deals are generally found on Wednesday, with Saturday being the most expensive.

Book cheap flights from Philadelphia to Lambert-St Louis (round-trip)

Airports
Origin
Philadelphia
$194
only
$194
Destination
St. Louis
$194
only
$194
Tue, Jan 30
PHL
STL
8h 21m
Wed, Jan 31
STL
PHL
13h 32m
Trip: 2 days
5.6OkayShow reviews
Overall 5.6 Okay
Based on 33270 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
ATL
DEN
Mediocre 3.6

The price was good, and it was a non stop flight.

The crew was rude and the seats didn't recline.

SJU
ATL
Excellent 10.0

Fast luggage checking

No cash accepted for overweight baggage

PHL
MCO
Mediocre 2.3

Its a scam! They act like they are giving you a break by having you buy cheap flights but in reality it costs more than a bit more expensive flight. I had to pay $45.00 each bag no matter if it was checked or carry-on. In total round trip I paid $180.00 extra just for my husbands carry-on as well as mine. Must add that our flights together cost 286.00. We should of went with American Airlines. On top of that we couldn't select our own seat if so, we had to pay extra, so we had to sit separated from each other. It was ridiculous! Never Again with this company!!!!!

DEN
MKE
Good 6.6

Direct flight from Denver to Milwaukee. Didn't have to wait on tarmac so that was a plus.

Have to pay for every little thring down to the peanuts

AUS
LAS
Excellent 8.0

Efficient

N/a

Mon, Apr 23
PHL
STL
15h 28m
Tue, Apr 24
STL
PHL
2h 13m
Trip: 2 days
Overall 0.0 Poor
Based on 0 reviews
Thu, Apr 5
PHL
STL
2h 30m
Sun, Apr 8
STL
PHL
2h 07m
Trip: 4 days
8.1ExcellentShow reviews
Overall 8.1 Excellent
Based on 11 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
YUL
MIA
Excellent 10.0

First time flyer with American airlines and the service was impeccable

Nothing to dislike

DFW
SCL
Excellent 9.6

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

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

PHL
STL
Okay 5.0

Nice fly attendant .

Boarding not on time. Change gate. Announcement on the airport very poor, lack of diction and difficult to understand. Questions regarding food and entertainment not apply to flight from Philadelphia to St. Louis, they were not provided.

PHL
STL
Okay 5.6

the fly got delayed for more than 3 hours.

Tue, Feb 13
PHL
STL
8h 21m
Wed, Feb 21
STL
PHL
27h 44m
Trip: 9 days
5.6OkayShow reviews
Overall 5.6 Okay
Based on 33270 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
DEN
MKE
Good 6.6

Direct flight from Denver to Milwaukee. Didn't have to wait on tarmac so that was a plus.

Have to pay for every little thring down to the peanuts

LAS
IAD
Good 6.3

The staff on the flight was awesome, very helpful and kind to my friend who is terrified to fly. We were even ahead of schedule.

To pay for a carry on item is just crazy to me... not to mention you have to pay for beverages and snacks. All you are given is water.

MKE
TPA
Good 6.6

2nd row had plenty of leg room, nice new jet, Nice flight attendants, smooth flight, on time, made it to my destination safe. Successful flight! TSA Pre-chek was nice.

Idiot in front of me reclined his seat. Plane didn't get catered overnight. Water only.

DEN
SFO
Mediocre 2.0

Website would not let me check in the day before or the morning or my flight. There was an error every time and I almost got to the end once. I could not change the time of my transportation and arrived 10 minutes past the check in deadline (an hour prior to the flight taking off). I was refused access to the flight and offered a flight 5 hours later. The staff was rude and not helpful. I had heard negative things about Frontier and now I know why.

MSY
MCO
Excellent 10.0

Great crew great flight

Nothing, everything was awesome. Crazy to believe this was a 19 dollar flight

Wed, Jan 17
PHL
STL
8h 21m
Sun, Jan 21
STL
PHL
24h 28m
Trip: 5 days
5.6OkayShow reviews
Overall 5.6 Okay
Based on 33270 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
DEN
MKE
Good 6.6

Direct flight from Denver to Milwaukee. Didn't have to wait on tarmac so that was a plus.

Have to pay for every little thring down to the peanuts

LAS
IAD
Good 6.3

The staff on the flight was awesome, very helpful and kind to my friend who is terrified to fly. We were even ahead of schedule.

To pay for a carry on item is just crazy to me... not to mention you have to pay for beverages and snacks. All you are given is water.

AUS
LAS
Excellent 8.0

Efficient

N/a

SJU
ATL
Excellent 10.0

Fast luggage checking

No cash accepted for overweight baggage

IAD
LAS
Good 6.3

They gave me and someone else the same seat luckily it wasn’t a packed flight and was able to move to a row that was empty

Wed, May 16
PHL
STL
15h 23m
Fri, May 18
STL
PHL
19h 09m
Trip: 3 days
5.6OkayShow reviews
Overall 5.6 Okay
Based on 33270 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
TYS
MCO
Okay 5.0

Great people

The plane wasn’t very clean

IAD
LAS
Good 6.3

They gave me and someone else the same seat luckily it wasn’t a packed flight and was able to move to a row that was empty

LAS
IAD
Good 6.3

The staff on the flight was awesome, very helpful and kind to my friend who is terrified to fly. We were even ahead of schedule.

To pay for a carry on item is just crazy to me... not to mention you have to pay for beverages and snacks. All you are given is water.

AUS
LAS
Excellent 8.0

Efficient

N/a

MKE
TPA
Good 6.6

2nd row had plenty of leg room, nice new jet, Nice flight attendants, smooth flight, on time, made it to my destination safe. Successful flight! TSA Pre-chek was nice.

Idiot in front of me reclined his seat. Plane didn't get catered overnight. Water only.

Fri, Jan 5
PHL
STL
8h 21m
Sun, Jan 7
STL
PHL
5h 56m
Trip: 3 days
5.6OkayShow reviews
Overall 5.6 Okay
Based on 33270 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
AUS
LAS
Excellent 8.0

Efficient

N/a

ATL
DEN
Mediocre 3.6

The price was good, and it was a non stop flight.

The crew was rude and the seats didn't recline.

MKE
TPA
Good 6.6

2nd row had plenty of leg room, nice new jet, Nice flight attendants, smooth flight, on time, made it to my destination safe. Successful flight! TSA Pre-chek was nice.

Idiot in front of me reclined his seat. Plane didn't get catered overnight. Water only.

DEN
MKE
Good 6.6

Direct flight from Denver to Milwaukee. Didn't have to wait on tarmac so that was a plus.

Have to pay for every little thring down to the peanuts

MSY
MCO
Excellent 10.0

Great crew great flight

Nothing, everything was awesome. Crazy to believe this was a 19 dollar flight

Fri, Dec 22
PHL
STL
2h 46m
Fri, Dec 29
STL
PHL
2h 17m
Trip: 8 days
8.1ExcellentShow reviews
Overall 8.1 Excellent
Based on 11 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
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.

PHL
STL
Okay 5.0

Nice fly attendant .

Boarding not on time. Change gate. Announcement on the airport very poor, lack of diction and difficult to understand. Questions regarding food and entertainment not apply to flight from Philadelphia to St. Louis, they were not provided.

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.

ORD
LAX
Excellent 9.5

Easy, smooth.

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

Fri, Jun 1
PHL
STL
15h 23m
Sun, Jun 3
STL
PHL
19h 09m
Trip: 3 days
5.6OkayShow reviews
Overall 5.6 Okay
Based on 33270 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
MKE
TPA
Good 6.6

2nd row had plenty of leg room, nice new jet, Nice flight attendants, smooth flight, on time, made it to my destination safe. Successful flight! TSA Pre-chek was nice.

Idiot in front of me reclined his seat. Plane didn't get catered overnight. Water only.

LAS
IAD
Good 6.3

The staff on the flight was awesome, very helpful and kind to my friend who is terrified to fly. We were even ahead of schedule.

To pay for a carry on item is just crazy to me... not to mention you have to pay for beverages and snacks. All you are given is water.

IAD
LAS
Good 6.3

They gave me and someone else the same seat luckily it wasn’t a packed flight and was able to move to a row that was empty

MSY
MCO
Excellent 10.0

Great crew great flight

Nothing, everything was awesome. Crazy to believe this was a 19 dollar flight

SJU
ATL
Excellent 10.0

Fast luggage checking

No cash accepted for overweight baggage

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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.