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Cheap flights from Philadelphia to St. Louis (PHL - STL) from $29

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/24. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
PHL — STL
May 10 — May 171
From?
To?
Fri 5/10
Fri 5/17
1 adult, Economy
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The best prices from Philadelphia to Lambert-St Louis are usually found in January or December, booked 72 days in advance, depart on a Saturday or Wednesday and return on a Tuesday

Cheap flight deals from Philadelphia to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 5, 2024.

Popular in

November

Cheapest in

January

Round-trip from

$322

One-way from

$93
High demand for flights, 16% potential price rise
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Best time to find cheap flights, 20% potential price drop
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From Philadelphia to Lambert-St Louis
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One-way flight from Philadelphia to Lambert-St Louis
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What is the cheapest day to fly round-trip from Philadelphia to St. Louis?

Sunday flights are found to be more expensive to fly from Philadelphia to St. Louis. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to St. Louis.

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

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 61 days in advance, which can save you up to 232% on flights from Philadelphia to St. Louis compared to booking the week you need them. Waiting 61 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $476. For sooner than that we have options available in the next 3 days from $549.

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

Due to multiple factors, expect to potentially pay more when booking in November. For low rates, January can be a great choice for travel to St. Louis. Flights to St. Louis from Philadelphia in January are about $359 on average during January, but can be found for as low as $173.

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

It’s optimal to fly from Philadelphia to St. Louis at noon. By choosing this option you can save up to 37% on the cost of your flight, compared to a flight in the afternoon.

Cheap Spirit Airlines flights from Philadelphia to St. Louis

Explore cheap flight options specifically provided by Spirit Airlines for the route between Philadelphia and St. Louis. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,719,943 searches. Data last updated May 5, 2024.
Check out some of the cheapest Spirit Airlines flights we've come across from Philadelphia to St. Louis. It's recommended that users confirm their flight details before booking.
Fri 5/177:11 pmPHL - STL
1 stop16h 17mSpirit Airlines
Tue 5/212:35 pmSTL - PHL
1 stop6h 58mSpirit Airlines
Deal found 5/5$149
Tue 5/216:31 amPHL - STL
1 stop8h 06mSpirit Airlines
Thu 5/236:19 pmSTL - PHL
1 stop13h 41mSpirit Airlines
Deal found 5/5$151
Tue 5/215:10 amPHL - STL
3 stops30h 36mSpirit Airlines
Wed 5/2911:36 amSTL - PHL
1 stop17h 54mSpirit Airlines
Deal found 5/4$177
Tue 5/218:00 amPHL - STL
2 stops27h 46mSpirit Airlines
Sat 5/255:15 pmSTL - PHL
1 stop14h 45mSpirit Airlines
Deal found 5/3$178
Tue 5/218:00 amPHL - STL
2 stops27h 46mSpirit Airlines
Wed 5/2911:36 amSTL - PHL
1 stop17h 54mSpirit Airlines
Deal found 5/4$180
Sat 5/187:57 pmPHL - STL
1 stop22h 32mSpirit Airlines
Tue 5/2110:34 amSTL - PHL
1 stop21h 26mSpirit Airlines
Deal found 5/4$185
Sun 5/125:10 amPHL - STL
1 stop13h 19mSpirit Airlines
Tue 5/142:35 pmSTL - PHL
1 stop21h 50mSpirit Airlines
Deal found 5/4$186
Tue 5/215:10 amPHL - STL
3 stops30h 36mSpirit Airlines
Tue 5/2810:34 amSTL - PHL
3 stops27h 35mSpirit Airlines
Deal found 5/4$188
Thu 5/305:10 amPHL - STL
1 stop13h 19mSpirit Airlines
Sun 6/27:30 pmSTL - PHL
3 stops19h 11mSpirit Airlines
Deal found 5/4$193

Cheap Sun Country Air flights from Philadelphia to St. Louis

Explore cheap flight options specifically provided by Sun Country Air for the route between Philadelphia and St. Louis. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,719,943 searches. Data last updated May 5, 2024.
Some of the best deals we've found on Sun Country Air flights traveling from Philadelphia to St. Louis. Deals are refreshing constantly so come back soon for more options.
Wed 6/1911:13 amPHL - STL
1 stop10h 53mSun Country Air
Sun 6/236:15 pmSTL - PHL
1 stop16h 12mSun Country Air
Deal found 5/4$150
Thu 6/1312:00 pmPHL - STL
1 stop25h 41mSun Country Air
Tue 6/187:30 pmSTL - PHL
1 stop13h 53mSun Country Air
Deal found 5/4$165
Thu 6/1312:00 pmPHL - STL
1 stop25h 41mSun Country Air
Sun 6/166:30 amSTL - PHL
1 stop27h 57mSun Country Air
Deal found 5/3$175
Thu 7/411:59 amPHL - STL
1 stop22h 30mSun Country Air
Sun 7/76:15 pmSTL - PHL
1 stop19h 58mSun Country Air
Deal found 5/5$200

Cheap Philadelphia to St. Louis flights in May & June 2024

Find cheap flight options from Philadelphia to St. Louis specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,719,943 searches. Prices were last updated on May 5, 2024.
These are some of the best deals we've found on flights to St. Louis in 2024 at this time. If these deals don't appeal to you, be sure to come back soon for more options.
Wed 5/296:30 amPHL - STL
Nonstop2h 27mFrontier
Wed 6/2610:36 pmSTL - PHL
Nonstop2h 12mFrontier
Deal found 5/4$58
Mon 6/248:19 pmPHL - STL
Nonstop2h 27mFrontier
Sat 6/293:08 pmSTL - PHL
Nonstop2h 12mFrontier
Deal found 5/4$68
Wed 6/268:19 pmPHL - STL
Nonstop2h 27mFrontier
Mon 7/110:36 pmSTL - PHL
Nonstop2h 12mFrontier
Deal found 5/4$76
Wed 5/296:30 amPHL - STL
Nonstop2h 27mFrontier
Sat 6/18:57 amSTL - PHL
Nonstop2h 14mFrontier
Deal found 5/3$78
Sat 5/256:30 amPHL - STL
Nonstop2h 27mFrontier
Mon 5/275:57 pmSTL - PHL
Nonstop2h 14mFrontier
Deal found 5/3$83
Wed 5/296:30 amPHL - STL
Nonstop2h 27mFrontier
Sat 6/18:57 amSTL - PHL
Nonstop2h 14mFrontier
Deal found 5/4$88
Sat 5/1811:02 pmPHL - STL
1 stop9h 06mFrontier
Wed 5/228:47 amSTL - PHL
Nonstop2h 14mFrontier
Deal found 5/3$108
Wed 5/294:17 pmPHL - STL
1 stop26h 12mMultiple Airlines
Wed 6/2610:36 pmSTL - PHL
Nonstop2h 12mMultiple Airlines
Deal found 5/4$109
Wed 6/128:19 pmPHL - STL
Nonstop2h 27mFrontier
Wed 6/1910:36 pmSTL - PHL
Nonstop2h 12mFrontier
Deal found 5/4$111

Philadelphia to St. Louis 2024 flight deals

Discover exclusive flight deals for travel between Philadelphia and St. Louis in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,719,943 searches. Data last updated May 5, 2024.
These are some of the best deals we've found on flights to St. Louis in 2024 at this time. If these deals don't appeal to you, be sure to come back soon for more options.
Wed 5/296:30 amPHL - STL
Nonstop2h 27mFrontier
Wed 6/2610:36 pmSTL - PHL
Nonstop2h 12mFrontier
Deal found 5/4$58
Sat 7/279:17 amPHL - STL
Nonstop2h 30mFrontier
Wed 7/313:32 pmSTL - PHL
Nonstop2h 13mFrontier
Deal found 5/4$61
Mon 6/248:19 pmPHL - STL
Nonstop2h 27mFrontier
Sat 6/293:08 pmSTL - PHL
Nonstop2h 12mFrontier
Deal found 5/4$68
Sat 6/812:51 pmPHL - STL
Nonstop2h 27mFrontier
Wed 6/1210:36 pmSTL - PHL
Nonstop2h 12mFrontier
Deal found 5/5$73
Wed 6/268:19 pmPHL - STL
Nonstop2h 27mFrontier
Mon 7/110:36 pmSTL - PHL
Nonstop2h 12mFrontier
Deal found 5/4$76
Wed 5/296:30 amPHL - STL
Nonstop2h 27mFrontier
Sat 6/18:57 amSTL - PHL
Nonstop2h 14mFrontier
Deal found 5/3$78
Sat 5/256:30 amPHL - STL
Nonstop2h 27mFrontier
Mon 5/275:57 pmSTL - PHL
Nonstop2h 14mFrontier
Deal found 5/3$83
Wed 5/296:30 amPHL - STL
Nonstop2h 27mFrontier
Sat 6/18:57 amSTL - PHL
Nonstop2h 14mFrontier
Deal found 5/4$88
Wed 6/58:19 pmPHL - STL
Nonstop2h 27mFrontier
Mon 6/1010:36 pmSTL - PHL
Nonstop2h 12mFrontier
Deal found 5/5$103

Non-stop flights to St. Louis from Philadelphia

Discover non-stop flight options from Philadelphia to St. Louis. Find direct flights with no layovers, providing a convenient travel experience. Explore non-stop flight options based on user searches, and compare prices and availability for your desired travel dates. Over the last 7 days, Cheapflights users made 2,719,943 searches. Data last updated May 5, 2024.
Consider booking one of these non-stop flights heading from Philadelphia to St. Louis. Users can also choose from other Philadelphia to St. Louis flights by using the search form above.
Wed 5/296:30 amPHL - STL
Nonstop2h 27mFrontier
Wed 6/2610:36 pmSTL - PHL
Nonstop2h 12mFrontier
Deal found 5/4$58
Sat 7/279:17 amPHL - STL
Nonstop2h 30mFrontier
Wed 7/313:32 pmSTL - PHL
Nonstop2h 13mFrontier
Deal found 5/4$61
Mon 6/248:19 pmPHL - STL
Nonstop2h 27mFrontier
Sat 6/293:08 pmSTL - PHL
Nonstop2h 12mFrontier
Deal found 5/4$68
Wed 6/268:19 pmPHL - STL
Nonstop2h 27mFrontier
Mon 7/110:36 pmSTL - PHL
Nonstop2h 12mFrontier
Deal found 5/4$76
Wed 5/296:30 amPHL - STL
Nonstop2h 27mFrontier
Sat 6/18:57 amSTL - PHL
Nonstop2h 14mFrontier
Deal found 5/3$78
Sat 5/256:30 amPHL - STL
Nonstop2h 27mFrontier
Mon 5/275:57 pmSTL - PHL
Nonstop2h 14mFrontier
Deal found 5/3$83
Wed 5/296:30 amPHL - STL
Nonstop2h 27mFrontier
Sat 6/18:57 amSTL - PHL
Nonstop2h 14mFrontier
Deal found 5/4$88
Wed 6/128:19 pmPHL - STL
Nonstop2h 27mFrontier
Wed 6/1910:36 pmSTL - PHL
Nonstop2h 12mFrontier
Deal found 5/4$111
Fri 5/3110:53 amPHL - STL
Nonstop2h 27mFrontier
Mon 6/37:18 amSTL - PHL
Nonstop2h 14mFrontier
Deal found 5/4$113

Philadelphia to St. Louis flights leaving soon

Find last-minute flight options from Philadelphia to St. Louis for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,719,943 searches. Data last updated May 5, 2024.
Have a look at some of the flights available from Philadelphia to St. Louis departing last-minute. Users should be sure to double check the price, date, and time of their last-minute flight.
Tue 5/146:31 amPHL - STL
1 stop8h 06mMultiple Airlines
Sat 5/185:25 pmSTL - PHL
1 stop13h 25mMultiple Airlines
Deal found 5/4$123
Mon 5/137:11 pmPHL - STL
1 stop19h 26mMultiple Airlines
Fri 5/311:10 pmSTL - PHL
Nonstop2h 14mMultiple Airlines
Deal found 5/4$147
Sun 5/125:10 amPHL - STL
1 stop13h 19mSpirit Airlines
Tue 5/142:35 pmSTL - PHL
1 stop21h 50mSpirit Airlines
Deal found 5/4$186
Tue 5/146:31 amPHL - STL
1 stop8h 06mSpirit Airlines
Sat 5/185:15 pmSTL - PHL
2 stops18h 28mSpirit Airlines
Deal found 5/4$216
Sat 5/117:57 pmPHL - STL
1 stop22h 32mSpirit Airlines
Tue 5/142:35 pmSTL - PHL
1 stop21h 50mSpirit Airlines
Deal found 5/4$221
Sat 5/117:00 pmPHL - STL
3 stops23h 29mSpirit Airlines
Tue 5/142:35 pmSTL - PHL
2 stops17h 25mSpirit Airlines
Deal found 5/4$229
Sat 5/115:11 pmPHL - STL
2 stops25h 18mSpirit Airlines
Tue 5/142:35 pmSTL - PHL
2 stops17h 25mSpirit Airlines
Deal found 5/4$233
Tue 5/146:31 amPHL - STL
1 stop8h 06mSpirit Airlines
Sat 5/1811:39 amSTL - PHL
3 stops24h 04mSpirit Airlines
Deal found 5/4$258
Mon 5/137:11 pmPHL - STL
1 stop19h 26mMultiple Airlines
Mon 5/209:26 pmSTL - PHL
1 stop9h 24mMultiple Airlines
Deal found 5/4$259

One-way flights to St. Louis from Philadelphia

Search for one-way flight options from Philadelphia to St. Louis. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,719,943 searches. Data last updated May 5, 2024.
Take a look at some of the best available options we've come across on one-way flights from Philadelphia to St. Louis. Those seeking round-trip flights from Philadelphia to St. Louis should utilize the search form at the the top of the page.
Sat 8/249:17 amPHL - STL
Nonstop2h 30mFrontier
Deal found 5/5$29
Wed 6/268:19 pmPHL - STL
Nonstop2h 27mFrontier
Deal found 5/4$37
Thu 5/305:10 amPHL - STL
1 stop13h 19mSpirit Airlines
Deal found 5/4$63
Mon 6/35:01 amPHL - STL
Nonstop2h 27mFrontier
Deal found 5/4$74
Tue 5/146:31 amPHL - STL
1 stop8h 06mSpirit Airlines
Deal found 5/4$75
Thu 5/305:10 amPHL - STL
1 stop13h 19mSpirit Airlines
Deal found 5/5$80
Wed 5/157:18 pmPHL - STL
1 stop24h 22mSpirit Airlines
Deal found 5/4$81
Tue 6/46:31 amPHL - STL
1 stop8h 06mSpirit Airlines
Deal found 5/4$87
Mon 6/37:57 pmPHL - STL
1 stop14h 42mSpirit Airlines
Deal found 5/4$88

Find flights from Philadelphia to St. Louis within your budget

Customize your flight search to find flights from Philadelphia to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,719,943 searches. Data last updated May 5, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$143 - $306

Route

Depart

Return

Price

PhiladelphiaLambert-St Louis

PHL - STL

PHLSTL

Philadelphia

Sun 5/19

1 stop13h 19m

Lambert-St Louis

Wed 5/22

Nonstop2h 14m

$143

PhiladelphiaLambert-St Louis

PHL - STL

PHLSTL

Philadelphia

Mon 5/13

1 stop19h 26m

Lambert-St Louis

Fri 5/31

Nonstop2h 14m

$147

PhiladelphiaLambert-St Louis

PHL - STL

PHLSTL

Philadelphia

Fri 5/17

1 stop16h 17m

Lambert-St Louis

Tue 5/21

1 stop6h 58m

$149

PhiladelphiaLambert-St Louis

PHL - STL

PHLSTL

Philadelphia

Wed 6/19

1 stop10h 53m

Lambert-St Louis

Sun 6/23

1 stop16h 12m

$150

PhiladelphiaLambert-St Louis

PHL - STL

PHLSTL

Philadelphia

Tue 5/21

1 stop8h 06m

Lambert-St Louis

Thu 5/23

1 stop13h 41m

$151

PhiladelphiaLambert-St Louis

PHL - STL

PHLSTL

Philadelphia

Fri 5/17

1 stop13h 58m

Lambert-St Louis

Tue 5/21

1 stop12h 58m

$154

PhiladelphiaLambert-St Louis

PHL - STL

PHLSTL

Philadelphia

Sat 6/22

Nonstop2h 42m

Lambert-St Louis

Tue 6/25

Nonstop2h 17m

$179

PhiladelphiaLambert-St Louis

PHL - STL

PHLSTL

Philadelphia

Sat 7/27

1 stop4h 01m

Lambert-St Louis

Wed 7/31

1 stop4h 25m

$198

PhiladelphiaLambert-St Louis

PHL - STL

PHLSTL

Philadelphia

Mon 6/3

1 stop4h 10m

Lambert-St Louis

Thu 6/6

Nonstop2h 10m

$306

Flights are sorted by cheapest first

Deals found on 5/3

When is the best time to book a flight from Philadelphia to St. Louis?

Use this chart to determine the optimal time to book a round-trip flight from Philadelphia to St. Louis. Price data was last updated on May 3, 2024.
Booking 72 days in advance of your planned departure date is, on average, the best time to get cheap flights from Philadelphia to St. Louis. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Search Deals

When is the cheapest time to fly from Philadelphia to St. Louis?

Use this chart to determine the cheapest time to fly round-trip from Philadelphia to St. Louis. Price data was last updated on April 28, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Philadelphia to St. Louis flight should consider departing on Tuesday at noon when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Average price of flights to St. Louis by month

Plan your trip from Philadelphia to St. Louis by taking into account the cheapest months to travel. The average price of a one-way flight from Philadelphia to St. Louis is currently $68 while a round-trip flight costs $175. Price data was last updated on April 28, 2024.

Currently, September is the cheapest month in which you can book a flight from Philadelphia to St. Louis (average of $322). Flying from Philadelphia to St. Louis in July is currently the most expensive (average of $377). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

January

$326

February

$331

March

$357

April

$337

May

$345

June

$371

July

$377

August

$336

September

$322

October

$324

November

$336

December

$326

Temperature and rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature and rainfall totals by month.

STL

Temperature

32 - 80.6 °F

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated May 5, 2024.
To help decide which airline to fly from Philadelphia to St. Louis, see what other customers have to say about Spirit Airlines, Sun Country Air and Frontier. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.2
Very good
6,092 reviews
Check prices

Comfort

8.1

Crew

8.7

Overall

8.2

Entertainment

7.8

Boarding

8.3

Food

7.3

Reviews

1 / 10

The seats are too narrow and uncomfortable. I do appreciate that there was room for my knees. I hate the boarding circus.

Southwest
8.2
Very good
6,092 reviews
Southwest
8.2
Very good
6,092 reviews
Check prices

Comfort

8.1

Crew

8.7

Overall

8.2

Entertainment

7.8

Boarding

8.3

Food

7.3

Reviews

1 / 10

The seats are too narrow and uncomfortable. I do appreciate that there was room for my knees. I hate the boarding circus.

Delta
8.1
Very good
10,826 reviews
Southwest
8.2
Very good
6,092 reviews
Check prices

Comfort

8.1

Crew

8.7

Overall

8.2

Entertainment

7.8

Boarding

8.3

Food

7.3

Reviews

1 / 10

The seats are too narrow and uncomfortable. I do appreciate that there was room for my knees. I hate the boarding circus.

United Airlines
7.4
Good
11,118 reviews
Southwest
8.2
Very good
6,092 reviews
Check prices

Comfort

8.1

Crew

8.7

Overall

8.2

Entertainment

7.8

Boarding

8.3

Food

7.3

Reviews

1 / 10

The seats are too narrow and uncomfortable. I do appreciate that there was room for my knees. I hate the boarding circus.

American Airlines
7.3
Good
14,713 reviews
Southwest
8.2
Very good
6,092 reviews
Check prices

Comfort

8.1

Crew

8.7

Overall

8.2

Entertainment

7.8

Boarding

8.3

Food

7.3

Reviews

1 / 10

The seats are too narrow and uncomfortable. I do appreciate that there was room for my knees. I hate the boarding circus.

Sun Country Air
7.3
Good
647 reviews
Southwest
8.2
Very good
6,092 reviews
Check prices

Comfort

8.1

Crew

8.7

Overall

8.2

Entertainment

7.8

Boarding

8.3

Food

7.3

Reviews

1 / 10

The seats are too narrow and uncomfortable. I do appreciate that there was room for my knees. I hate the boarding circus.

Related info for your journey

Find useful and relevant information for your journey from Philadelphia to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    Lambert-St Louis is the airport most travelers will use when flying to St. Louis from Philadelphia. Booking flights from Philadelphia (PHL) to Lambert-St Louis (STL) should be relatively easy as there are 3 daily flights to St. Louis from 5 different airlines. 2h 20m is how long a flight from Philadelphia to Lambert-St Louis will take if you book a nonstop flight.

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

    Yes, there are multiple flights from Philadelphia to St. Louis for under $200. The cheapest flight booked recently is on Multiple Airlines for just $143, but on average you can expect to pay $159.

  • Are there nonstop flights from Philadelphia to St. Louis for under $100 on Cheapflights?

    Cheapflights has at least 20 direct flights from Philadelphia to St. Louis under $100. A good price for a nonstop flight from Philadelphia to St. Louis is less than $120.

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

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

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

    You can find nonstop flights on the following days: Friday.

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

    Per day, 1 flight departs from Philadelphia to St. Louis on average.
    Morning (6am - Noon) - 100% of flight departures

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

    Airlines like Spirit Airlines, Sun Country Air, and Frontier fly from Philadelphia to St. Louis in about 10h 53m. The time it takes to get you to your destination can typically vary by up to 5h 24m. The distance between Philadelphia and St. Louis is about 816 mi. This flight may include one or multiple stops.

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

    Cheapflights users have booked flights from Philadelphia to St. Louis round-trip from $149. Other airlines that can offer you cheap pricing are Sun Country Air, from $150, and Frontier, from $154. These flights start at 58% lower than the current average price 3 months from now.

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

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $29. However, be on the lookout for offers from Spirit Airlines and American Airlines, as they are both options that can get you from Philadelphia to St. Louis for a low price.

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

    When booking a flight from Philadelphia to St. Louis, you may want to consider flying on American Airlines, Delta or Frontier as they are the most popular for this route.

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

    Consider British Airways (88%), Iberia (83%) or Aer Lingus (78%) when booking your flight. These represent the most reliable airlines when flying from Philadelphia to St. Louis.

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

    Looking for the cheapest flight from Philadelphia to St. Louis? While on average our users pay $244, our data indicates the cheapest price to be $57. The most popular route (Philadelphia - Lambert-St Louis), is priced around $109.

  • What does PHL to STL mean?

    PHL stands for Philadelphia Airport, while STL stands for Lambert-St Louis Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry.

  • Can I find deals for flights from Philadelphia to St. Louis that include extra baggage allowance?

    The amount of baggage you can bring on your Philadelphia to St. Louis flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Philadelphia to St. Louis with specific airlines?

    Yes, Cheapflights allows you to browse and filter Philadelphia to St. Louis flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from Philadelphia to St. Louis that include hotel bookings?

    Yes. In addition to deals on Philadelphia to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Philadelphia to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Philadelphia to St. Louis.

  • Can I find deals for business class flights from Philadelphia to St. Louis?

    Yes. Cheapflights offers flight deals from Philadelphia to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from Philadelphia to St. Louis that allow pets onboard?

    Many airlines flying from Philadelphia to St. Louis offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Philadelphia to St. Louis?

    Yes, you can often find last-minute deals on Philadelphia to St. Louis flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Philadelphia to St. Louis flight deals updated?

    The Philadelphia to St. Louis flight deals you see on this page were last updated on 5/5.

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Alternative routes for Philadelphia to St. Louis
See prices for flight routes from nearby airports that may be better suited for you.

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Top 5 airlines flying from Philadelphia to St. Louis

Discover the top 5 airlines that operate flights from Philadelphia to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,719,943 searches. Data last updated May 5, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$78Average$196FlexibilityNo cancel feeOn-time62%
Search Frontier flights
Spirit AirlinesCheapest$127Average$189FlexibilityNo cancel feeOn-time65%
Search Spirit Airlines flights
American AirlinesCheapest$224Average$378FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapest$266Average$477FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapest$278Average$426FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
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Search flights from Philadelphia to St. Louis by cabin class

Find flights from Philadelphia to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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Hourly flight availability from Philadelphia to St. Louis

Find hourly flight availability from Philadelphia to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 5, 2024.
1%of flight departuresEarly morningMidnight to 6 am
21%of flight departuresMorning6 am to noon
0%of flight departuresAfternoonNoon to 6 pm
78%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from Philadelphia to St. Louis

Explore weekly flight availability from Philadelphia to St. Louis. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated May 5, 2024.
Sunday3daily flights
Monday4daily flights
Tuesday4daily flights
Wednesday3daily flights
Thursday4daily flights
Friday3daily flights
Saturday4daily flights

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Fly with Cheapflights

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How does Cheapflights help users find flights from Philadelphia to St. Louis?

Cheapflights helps you search for flights from Philadelphia to St. Louis via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Philadelphia to St. Louis?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to St. Louis from Philadelphia.

Can Cheapflights find flights from Philadelphia to St. Louis with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Philadelphia to St. Louis flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Philadelphia to St. Louis become cheaper?

Yes, Cheapflights offers price alerts on Philadelphia to St. Louis flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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