Cheap flights from St. Louis to Philadelphia (STL - PHL)

STL — PHL
Jan 31 — Feb 71

The best prices from Lambert-St Louis to Philadelphia are usually found in February or January, booked 36 days in advance, depart on a Tuesday or Friday and return on a Saturday

How to find the cheapest flight from St. Louis (STL) to Philadelphia (PHL)

All the information you need to plan the best STL to PHL flight in 2023: compare St. Louis to Philadelphia flight prices with the expected peak season, weather and rainfall in Philadelphia.

STL - PHL

Price

$207 - $464

PHL

Temperature

33.8 - 78.8 °F

PHL

Rainfall

2.7 - 4.4 inches

Popular inJuneHigh demand for flights, 18% potential price rise
Cheapest inFebruaryBest time to find cheap flights, 45% potential price drop
Round-trip from$207From Lambert-St Louis to Philadelphia
One-way from$140One-way flight from Lambert-St Louis to Philadelphia

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

Departing on a Monday is a good option for securing a great price. You can expect to save up to 18% when planning your travel around this day of the week.

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

Users have found that booking a flight from St. Louis to Philadelphia at least 33 days early can save you up to 30% on average compared to booking a flight this week. If booking 33 days before your flight isn’t an option for you, users have found flights from St. Louis to Philadelphia for as little as $423 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $502 for flights departing within the next 3 days.

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

Due to multiple factors, expect to potentially pay more when booking in June. For low rates, February can be a great choice for travel to Philadelphia. Flights to Philadelphia from St. Louis in February are about $380 on average during February, but can be found for as low as $177.

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

It’s typically best to fly out from St. Louis to Philadelphia in the evening. Doing so could potentially save you 50% on the flight price compared to flying at noon, which is usually more expensive.

Cheap flights from St. Louis to Philadelphia in January, February 2023

The best prices found for STL to PHL flights for January, February
Feb 6 - Feb 13
STL

Lambert-St Louis

PHL

Philadelphia

1 stop

15h 08m
PHL

Philadelphia

STL

Lambert-St Louis

1 stop

12h 48m
$151

Multiple Airlines

Pick Dates

Deal found 1/25

Feb 15 - Feb 22
STL

Lambert-St Louis

PHL

Philadelphia

1 stop

6h 39m
PHL

Philadelphia

STL

Lambert-St Louis

1 stop

9h 37m
$153

Spirit Airlines

Pick Dates

Deal found 1/24

Feb 1 - Feb 4
STL

Lambert-St Louis

PHL

Philadelphia

1 stop

8h 19m
PHL

Philadelphia

STL

Lambert-St Louis

1 stop

14h 19m
$155

Multiple Airlines

Pick Dates

Deal found 1/25

St. Louis to Philadelphia 2023 flight deals

Cheap flights to Philadelphia from St. Louis found for this year
Feb 6 - Feb 13
STL

Lambert-St Louis

PHL

Philadelphia

1 stop

15h 08m
PHL

Philadelphia

STL

Lambert-St Louis

1 stop

12h 48m
$151

Multiple Airlines

Pick Dates

Deal found 1/25

Feb 15 - Feb 22
STL

Lambert-St Louis

PHL

Philadelphia

1 stop

6h 39m
PHL

Philadelphia

STL

Lambert-St Louis

1 stop

9h 37m
$153

Spirit Airlines

Pick Dates

Deal found 1/24

Feb 1 - Feb 4
STL

Lambert-St Louis

PHL

Philadelphia

1 stop

8h 19m
PHL

Philadelphia

STL

Lambert-St Louis

1 stop

14h 19m
$155

Multiple Airlines

Pick Dates

Deal found 1/25

Cheap Frontier flights from St. Louis to Philadelphia

Feb 10 - Feb 13
STL

Lambert-St Louis

PHL

Philadelphia

1 stop

15h 49m
PHL

Philadelphia

STL

Lambert-St Louis

1 stop

14h 19m
$166

Frontier

Pick Dates

Deal found 1/23

Feb 19 - Feb 21
STL

Lambert-St Louis

PHL

Philadelphia

1 stop

17h 44m
PHL

Philadelphia

STL

Lambert-St Louis

1 stop

14h 59m
$169

Frontier

Pick Dates

Deal found 1/25

Feb 10 - Feb 12
STL

Lambert-St Louis

PHL

Philadelphia

1 stop

15h 49m
PHL

Philadelphia

STL

Lambert-St Louis

1 stop

10h 41m
$172

Frontier

Pick Dates

Deal found 1/26

Cheap Spirit Airlines flights from St. Louis to Philadelphia

Feb 15 - Feb 22
STL

Lambert-St Louis

PHL

Philadelphia

1 stop

6h 39m
PHL

Philadelphia

STL

Lambert-St Louis

1 stop

9h 37m
$153

Spirit Airlines

Pick Dates

Deal found 1/24

Feb 6 - Feb 13
STL

Lambert-St Louis

PHL

Philadelphia

2 stops

25h 53m
PHL

Philadelphia

STL

Lambert-St Louis

2 stops

19h 07m
$250

Spirit Airlines

Pick Dates

Deal found 1/25

Feb 10 - Feb 13
STL

Lambert-St Louis

PHL

Philadelphia

1 stop

7h 19m
PHL

Philadelphia

STL

Lambert-St Louis

3 stops

20h 22m
$251

Spirit Airlines

Pick Dates

Deal found 1/23

Non-stop flights to Philadelphia from St. Louis

Save time with St. Louis to Philadelphia direct flight deals
May 2 - May 3
STL

Lambert-St Louis

PHL

Philadelphia

Nonstop

2h 07m
PHL

Philadelphia

STL

Lambert-St Louis

Nonstop

2h 27m
$262

American Airlines

Pick Dates

Deal found 1/24

Feb 22 - Feb 25
STL

Lambert-St Louis

PHL

Philadelphia

Nonstop

2h 15m
PHL

Philadelphia

STL

Lambert-St Louis

Nonstop

2h 47m
$304

American Airlines

Pick Dates

Deal found 1/25

Feb 26 - Feb 28
STL

Lambert-St Louis

PHL

Philadelphia

Nonstop

2h 15m
PHL

Philadelphia

STL

Lambert-St Louis

Nonstop

2h 47m
$314

American Airlines

Pick Dates

Deal found 1/24

Last minute flights from St. Louis to Philadelphia

Late deals on return flights to Philadelphia from St. Louis, departing today and this week
Feb 1 - Feb 4
STL

Lambert-St Louis

PHL

Philadelphia

1 stop

8h 19m
PHL

Philadelphia

STL

Lambert-St Louis

1 stop

14h 19m
$155

Multiple Airlines

Pick Dates

Deal found 1/25

Feb 1 - Feb 3
STL

Lambert-St Louis

PHL

Philadelphia

1 stop

15h 49m
PHL

Philadelphia

STL

Lambert-St Louis

1 stop

17h 57m
$166

Frontier

Pick Dates

Deal found 1/24

Feb 1 - Feb 4
STL

Lambert-St Louis

PHL

Philadelphia

1 stop

8h 19m
PHL

Philadelphia

STL

Lambert-St Louis

2 stops

10h 05m
$199

Multiple Airlines

Pick Dates

Deal found 1/25

One-way flights to Philadelphia from St. Louis

The cheapest one-way flights from St. Louis to Philadelphia
Jan 31
STL

Lambert-St Louis

PHL

Philadelphia

1 stop

15h 49m
$65

Frontier

Pick Dates

Deal found 1/25

Feb 7
STL

Lambert-St Louis

PHL

Philadelphia

1 stop

8h 20m
$66

Multiple Airlines

Pick Dates

Deal found 1/24

Mar 1
STL

Lambert-St Louis

PHL

Philadelphia

1 stop

8h 11m
$74

Multiple Airlines

Pick Dates

Deal found 1/24

Reviews of Airlines Servicing Philadelphia

American Airlines
7.4
Good
1,666 reviews

Comfort

7.4

Overall

7.4

Crew

8.0

Boarding

7.7

Food

6.6

Entertainment

7.1

Reviews

1 / 10

Horrible crew. Horrible flight, very old plane, water was leaking on top of my head during the last hour before landing. I have videos to prove. Tasteless food. Crews do not care, in fact don’t even ask for food in business class. I would never for and never recommend anyone,

American Airlines
7.4
Good
1,666 reviews
American Airlines
7.4
Good
1,666 reviews

Comfort

7.4

Overall

7.4

Crew

8.0

Boarding

7.7

Food

6.6

Entertainment

7.1

Reviews

1 / 10

Horrible crew. Horrible flight, very old plane, water was leaking on top of my head during the last hour before landing. I have videos to prove. Tasteless food. Crews do not care, in fact don’t even ask for food in business class. I would never for and never recommend anyone,

Spirit Airlines
6.9
Okay
708 reviews
American Airlines
7.4
Good
1,666 reviews

Comfort

7.4

Overall

7.4

Crew

8.0

Boarding

7.7

Food

6.6

Entertainment

7.1

Reviews

1 / 10

Horrible crew. Horrible flight, very old plane, water was leaking on top of my head during the last hour before landing. I have videos to prove. Tasteless food. Crews do not care, in fact don’t even ask for food in business class. I would never for and never recommend anyone,

Frontier
6.1
Okay
536 reviews
American Airlines
7.4
Good
1,666 reviews

Comfort

7.4

Overall

7.4

Crew

8.0

Boarding

7.7

Food

6.6

Entertainment

7.1

Reviews

1 / 10

Horrible crew. Horrible flight, very old plane, water was leaking on top of my head during the last hour before landing. I have videos to prove. Tasteless food. Crews do not care, in fact don’t even ask for food in business class. I would never for and never recommend anyone,

Related info for your journey

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

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

Booking a flight from Lambert-St Louis (STL) to Philadelphia (PHL) is your only option if you wish to fly from St. Louis to Philadelphia. On a typical day, there are 3 flights from Lambert-St Louis to Philadelphia, all of which are around 2h 05m for a nonstop flight. You can also purchase a plane ticket from 8 airlines when you book a flight from Lambert-St Louis to Philadelphia.

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

Some of our airline partners flying from Lambert-St Louis to Philadelphia have new flexible policies in place due to COVID-19. American Airlines, Frontier, and Delta 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 St. Louis to Philadelphia for under $200 on Cheapflights?

Yes, there are multiple flights from St. Louis to Philadelphia for under $200. The cheapest flight booked recently is on Multiple Airlines for just $151, but on average you can expect to pay $187.

Are there nonstop flights from St. Louis to Philadelphia for under $300 on Cheapflights?

Cheapflights has at least 20 direct flights from St. Louis to Philadelphia under $300. A good price for a nonstop flight from St. Louis to Philadelphia is less than $387.

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

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

What days are nonstop flights available from St. Louis to Philadelphia?

You can find nonstop flights on the following days: Sunday, Monday, Thursday, Friday, Saturday.

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

Within the past month, 12 users have taken a look at flights from Lambert-St Louis to Philadelphia.

How many flights depart from St. Louis to Philadelphia on average per day?

On average 9 flights depart from St. Louis to Philadelphia per day.
Afternoon (Noon - 6pm) - 100% of flight departures

How long is the flight from St. Louis to Philadelphia?

There are many flights that can get you from St. Louis to Philadelphia in 6h 39m. Fly via Spirit Airlines or Frontier to get the fastest option. Airlines will cover a distance of 816 mi. This flight may include one or multiple stops.

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

Cheapflights users have booked flights from St. Louis to Philadelphia round-trip from $153. Another airline that can offer you cheap pricing is Frontier. These flights start at 59% lower than the current average price 3 months from now.

What are the cheapest airlines to fly from St. Louis to Philadelphia one-way?

For one-way options, check prices for Frontier. According to our data, you can fly for as low as $65. Users have also found prices from $107 and $131 on Spirit Airlines and American Airlines, respectively.

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

The most popular airlines flying from St. Louis to Philadelphia are American Airlines, Delta and Frontier. Something to consider prior to booking your flight.

What are the most reliable airlines from St. Louis to Philadelphia?

No one likes to see their flight delayed. When booking a flight from St. Louis to Philadelphia consider choosing Aer Lingus (92%), American Airlines (78%) or Southwest (74%) as they are the most reliable in getting you off to your destination on time.

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

While on average a flight from St. Louis to Philadelphia is generally $592, our data shows the cheapest flight currently is $81. When looking at the most popular route, (Lambert-St Louis - Philadelphia), you can expect to pay $151 for that flight.

Alternative routes for St. Louis to Philadelphia

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

Top 6 airlines flying from St. Louis to Philadelphia

The chart below displays the airlines Cheapflights users traveling from St. Louis to Philadelphia choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
Juneyao AirlinesCheapest$13Average$22FlexibilityNo cancel feeOn-time66%COVID-19 safety
Search Juneyao Airlines flights
Spirit AirlinesCheapest$105Average$196FlexibilityNo cancel feeOn-time65%COVID-19 safety
Search Spirit Airlines flights
Sun Country AirCheapest$106Average$132FlexibilityNo cancel feeOn-time83%COVID-19 safety
Search Sun Country Air flights
FrontierCheapest$152Average$213FlexibilityNo cancel feeOn-time62%COVID-19 safety
Search Frontier flights
American AirlinesCheapest$194Average$436FlexibilityNo cancel feeOn-time71%COVID-19 safety
Search American Airlines flights
DeltaCheapest$248Average$409FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search Delta flights

Hourly flight availability from St. Louis to Philadelphia

See what time of day planes typically take off from St. Louis to Philadelphia
37%of flight departuresEarly morningMidnight to 6 am
27%of flight departuresMorning6 am to noon
36%of flight departuresAfternoonNoon to 6 pm
0%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from St. Louis to Philadelphia

See how many times per day planes take to the skies headed from St. Louis to Philadelphia
Sunday2daily flights
Monday3daily flights
Tuesday3daily flights
Wednesday5daily flights
Thursday5daily flights
Friday3daily flights
Saturday2daily flights
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