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PHL - STL

Find cheap flights from Philadelphia to St. Louis from $29

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Philadelphia to St. Louis departing on 6/5. 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.
1 adult
0 bags
Fri 6/7
Fri 6/14

Search hundreds of travel sites at once for deals on flights to St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to St. Louis, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to St. Louis, as well as popular online travel agencies
In the last 7 days travelers have searched 43,968,530 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

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Filter your dealsChoose cabin class, free Wi-Fi and more.

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

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Philadelphia to St. Louis that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
1:12 pm - 2:42 pmPHL-STL
2h 30mnonstop
3:32 pm - 6:45 pmSTL-PHL
2h 13mnonstop
$58Frontier
Find Deal
Wed, Jul 31 - Wed, Aug 7
9:17 am - 10:47 amPHL-STL
2h 30mnonstop
3:32 pm - 6:45 pmSTL-PHL
2h 13mnonstop
$60Frontier
Find Deal
Sat, Jul 13 - Wed, Jul 17
6:30 am - 7:57 amPHL-STL
2h 27mnonstop
8:57 am - 12:11 pmSTL-PHL
2h 14mnonstop
$62Frontier
Find Deal
Wed, May 22 - Sat, May 25
5:10 am - 4:25 pmPHL-STL
12h 15m1 stop
6:19 pm - 9:00 amSTL-PHL
13h 41m1 stop
$160Spirit Airlines
Find Deal
Sat, Jun 1 - Sun, Jun 2
5:10 am - 5:29 pmPHL-STL
13h 19m1 stop
7:30 pm - 1:25 pmSTL-PHL
16h 55m1 stop
$165Spirit Airlines
Find Deal
Thu, May 30 - Sun, Jun 2
7:08 pm - 8:49 pmPHL-STL
2h 41mnonstop
4:52 pm - 8:06 pmSTL-PHL
2h 14mnonstop
$179American Airlines
Find Deal
Tue, Jul 16 - Sat, Jul 20
7:11 pm - 8:55 pmPHL-STL
2h 44mnonstop
6:08 am - 9:25 amSTL-PHL
2h 17mnonstop
$189American Airlines
Find Deal
Tue, Jun 4 - Mon, Jun 10
6:00 am - 11:46 amPHL-STL
6h 46m1 stop
5:25 pm - 11:09 pmSTL-PHL
4h 44m1 stop
$198Delta
Find Deal
Tue, Jul 16 - Sat, Jul 20
10:38 am - 3:57 pmPHL-STL
6h 19m1 stop
5:07 pm - 12:53 amSTL-PHL
6h 46m1 stop
$218Delta
Find Deal
Wed, May 29 - Sat, Jun 1
6:20 am - 9:56 amPHL-STL
4h 36m1 stop
9:30 am - 5:43 pmSTL-PHL
7h 13m1 stop
$308United Airlines
Find Deal
Wed, Aug 21 - Sat, Aug 24

Flights from Philadelphia to St. Louis - Travel Insights & Trends

Get data-powered insights and trends into flights from Philadelphia to St. Louis to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Philadelphia to St. Louis?

The average price of all flights from Philadelphia to St. Louis clicked on KAYAK for each day over the last 12 months.
If you are looking for a flight deal from Philadelphia to St. Louis, look for departures on Saturdays and avoid leaving on a Monday, as it's usually the priciest day. When flying back from St. Louis, Tuesday is the cheapest day to fly and Sunday is the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Philadelphia to St. Louis, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Philadelphia to St. Louis is January, where tickets cost $288 on average. On the other hand, the most expensive months are November and February, where the average cost of tickets is $426 and $383 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Philadelphia to St. Louis, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Philadelphia to St. Louis, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 72 days before departure.

Which airlines provide the cheapest flights from Philadelphia to St. Louis?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the past 3 days, the cheapest one-way tickets to St. Louis from Philadelphia were found on Frontier ($29) and Spirit Airlines ($70), and the lowest round-trip tickets were found on Frontier ($58) and Spirit Airlines ($160).

Which airlines fly most frequently between Philadelphia and St. Louis?

Philadelphia and St. Louis are connected by different airlines. The airlines that fly that route the most regularly are American Airlines (5 flights per day), Southwest (3 flights per day), and Frontier (one flight per day).

Which airlines fly non-stop between Philadelphia and St. Louis?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for flights from Philadelphia to St. Louis.
There are 3 airlines that fly nonstop from Philadelphia to St. Louis. They are: American Airlines, Frontier and Southwest. The cheapest price of all airlines flying this route was found with Frontier at $78 for a one-way flight. On average, the best prices for this route can be found at Frontier.

How many flights are there between Philadelphia and St. Louis per day?

Each day, there are between 8 and 11 nonstop flights that take off from Philadelphia and land in St. Louis, with an average flight time of 2h 30m. The most common departure time is 7:00 pm and most flights take off in the morning. Each week, there are 68 flights. The most frequent day of departure is Friday, when 16% of all weekly flights depart. The fewest flights depart on a Sunday.

Which cabin class options are there for flights between Philadelphia and St. Louis?

The average price of flights for each cabin class for the route found by users searching on KAYAK over the last 2 weeks.
There are 3 cabin class options for the route. These are First, Business and Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

How long does a flight from Philadelphia to St. Louis take?

The average nonstop flight takes 2h 20m, covering a distance of 811 miles.

What’s the earliest departure time from Philadelphia to St. Louis?

Early birds can take the earliest flight from Philadelphia at 5:01 am and will be landing in St. Louis at 6:28 am.

What’s the latest departure time from Philadelphia to St. Louis?

If you prefer to fly at night, the latest flight from Philadelphia to St. Louis jets off at 8:40 pm and lands at 10:00 pm.

Good to know

Low season

January

High season

May

Cheapest flight

$29
Best time to beat the crowds with an average 20% drop in price.
Most popular time to fly and prices are also 4% lower on average.
Flight from Philadelphia to St. Louis

When to book flights from Philadelphia to St. Louis

Are your dates flexible? Find out the best times to travel from Philadelphia to St. Louis based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Philadelphia to St. Louis

  • How do I get from Lambert St. Louis Airport (STL) to the city center?

    MetroLink provides train service from the airport to the city center. The train departs from Lambert Airport Terminal 1 station and arrives at Stadium Station. It typically runs 406 times weekly with the duration of the ride being around 45 minutes. Public buses also offer service the route between the airport and the city center with a journey time of around 45 minutes. The cost will vary depending on the bus you choose.

  • What seat options are available on Frontier flights from Philadelphia to St. Louis?

    Frontier Airlines offers several seat options, including standard seats, which are the regular seats, and stretch seats, which are seats with additional legroom that are available for purchase for an additional fee, and are often located in the front of the plane or the emergency exit rows. Frontier Airlines offer passengers the option to choose their own seats for a fee, instead of having the airline randomly assign them.

  • What is the luggage allowance on Southwest flights from Philadelphia to St. Louis?

    Southwest Airlines allows passengers on flights from Philadelphia to St. Louis to check up to two bags for free as part of the fare, provided that the bags do not exceed 50 lbs in weight and 62 inches in size. Passengers are allowed to bring one carry-on bag and one personal item on board the aircraft. The carry-on bag must not exceed 24 inches in length, 16 inches in width, and 10 inches in height. In addition, passengers will be charged an additional fee of $75 per one-way trip for bags that exceed the weight limit of 50 lbs, up to a maximum weight of 100 lbs.

  • What services are offered by Alaska Airlines on economy class flights from Philadelphia to St. Louis?

    Alaska Airlines offers several services on economy class flights including limited food and drinks, which may include a choice of snacks or meals, free soft drinks, coffee, and tea on all flights, leather headrests and a wide range of in-flight entertainment options, and standard economy seats with average legroom and seat-back pockets for storage.

  • What is the cheapest flight from Philadelphia to St. Louis?

    In the last 3 days, the lowest price for a flight from Philadelphia to St. Louis was $29 for a one-way ticket and $58 for a round-trip.

  • Do I need a passport to fly between Philadelphia and St. Louis?

    No, a passport isn't needed to fly from Philadelphia to St. Louis. However, local authorities might ask for an official ID.

  • Which airports will I be using when flying from Philadelphia to St. Louis?

    Philadelphia and St. Louis are both served by 1 main airport. You will leave Philadelphia from Philadelphia and will be arriving at Lambert-St Louis.

  • Which airlines offer Wi-Fi service onboard planes from Philadelphia to St. Louis?

    American Airlines, and Delta offer inflight Wi-Fi service on the Philadelphia to St. Louis flight route.

  • Which aircraft models fly most regularly from Philadelphia to St. Louis?

    The Airbus A319 is the aircraft model that flies most regularly on the Philadelphia to St. Louis flight route.

  • Which airline alliances offer flights from Philadelphia to St. Louis?

    oneworld is the only airline alliance operating flights between Philadelphia and St. Louis.

  • On which days can I fly direct from Philadelphia to St. Louis?

    There are nonstop flights from Philadelphia to St. Louis on a daily basis.

  • Which is the best airline for flights from Philadelphia to St. Louis, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Philadelphia to St. Louis are Delta and United Airlines. With an average price for the route of $418 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $477 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Philadelphia to St. Louis?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Philadelphia to St. Louis.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Philadelphia to St. Louis?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Philadelphia is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Philadelphia to St. Louis?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to St. Louis with an airline and back to Philadelphia with another airline. Booking your flights between Philadelphia and STL can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Philadelphia to St. Louis?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Louis from Philadelphia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding a cheap flight from PHL to St. Louis

  • Looking for a cheap flight? 25% of our users found flights on this route for $97 or less one-way and $174 or less round-trip.
  • Flights from Philadelphia (PHL) to St. Louis (STL) have layovers in various cities depending on the airline. Some of these cities include Orlando (MCO), Dallas (DFW), Atlanta (ATL), Minneapolis (MSP), Denver (DEN), and Charlotte (CLT).
  • Flights from Philadelphia to St. Louis take approximately 7 hours so passengers can consider flying Business class on American Airlines flights. A Business class ticket on American Airlines gets you access to the Flagship Lounge at the airport, priority boarding, and lie-flat seats, making the overall journey more comfortable.
  • United Airlines is using sustainable aviation fuel (SAF) to reduce carbon emissions, with plans to use lower-carbon fuels on routes like those from Philadelphia to St. Louis.
  • Delta Air Lines provides wheelchair assistance to passengers who require assistance throughout their travels on flights from Philadelphia to St. Louis. The airline provides additional assistance at the airport, as well as on board flights, for passengers with reduced mobility or those traveling with a caregiver.
  • Lambert St. Louis Airport (STL) gives access to several other cities in the region. These include Berkeley, Hazelwood, Saint Ann, Bridgeton, Florissant, Ferguson, Maryland Heights, Overland, Creve Coeur, and Chesterfield.
See more tips

Prefer to fly non-stop from Philadelphia to St. Louis?

Find which airlines fly direct from Philadelphia to Lambert-St Louis, which days they fly and book direct flights.

Nonstop departures

Philadelphia to Lambert-St Louis

Monday

American Airlines, British Airways, Frontier, +3 more

American Airlines, British Airways, +4 more

Tuesday

American Airlines, British Airways, Iberia, +2 more

American Airlines, British Airways, +3 more

Wednesday

American Airlines, British Airways, Frontier, +3 more

American Airlines, British Airways, +4 more

Thursday

American Airlines, British Airways, Iberia, +2 more

American Airlines, British Airways, +3 more

Friday

American Airlines, British Airways, Frontier, +3 more

American Airlines, British Airways, +4 more

Saturday

American Airlines, British Airways, Frontier, +3 more

American Airlines, British Airways, +4 more

Sunday

American Airlines, British Airways, Iberia, +2 more

American Airlines, British Airways, +3 more

See more direct flights

Nonstop returns

Lambert-St Louis to Philadelphia

Monday

Aer Lingus, American Airlines, British Airways, +4 more

Aer Lingus, American Airlines, +5 more

Tuesday

Aer Lingus, American Airlines, British Airways, +3 more

Aer Lingus, American Airlines, +4 more

Wednesday

Aer Lingus, American Airlines, British Airways, +4 more

Aer Lingus, American Airlines, +5 more

Thursday

Aer Lingus, American Airlines, British Airways, +3 more

Aer Lingus, American Airlines, +4 more

Friday

Aer Lingus, American Airlines, British Airways, +4 more

Aer Lingus, American Airlines, +5 more

Saturday

Aer Lingus, American Airlines, British Airways, +4 more

Aer Lingus, American Airlines, +5 more

Sunday

Aer Lingus, American Airlines, British Airways, +3 more

Aer Lingus, American Airlines, +4 more

See more direct flights
See more direct flights

Top 5 airlines serving from Philadelphia to St. Louis

 
See real verified KAYAK customer reviews for airlines flying from Philadelphia to St. Louis. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Philadelphia to St. Louis? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 10789 reviews
8.2Boarding
7.9Comfort
8.0Entertainment
8.6Crew
7.4Food
Airline reviews

The gate area was incredibly short staffed, with one representative manning 4-5 flights, which caused a 3 hr delay in boarding even though the plane was all ready to leave. Other flights also were delayed because of this. The flight crew was awesome and I feel bad for the only gate worker on call, but Delta needs to hire more employees.

2.0 MediocreAnonymous, May 2024AVL - LGA
Read more about Delta reviews

The gate area was incredibly short staffed, with one representative manning 4-5 flights, which caused a 3 hr delay in boarding even though the plane was all ready to leave. Other flights also were delayed because of this. The flight crew was awesome and I feel bad for the only gate worker on call, but Delta needs to hire more employees.

Very frustrated with boarding gate crew. She announced the plane was small and they would be limiting us to one item to carry on. Not a problem for me as I understand the tiny planes have limited space!! Not the case here! It was a rather large plane and had plenty of room for bags! So because I don’t want to be one of “those people” who ignores the request to check a carry on I did so asking if I would be able to pick it up at the bottom of the ramp on arrival in Knoxville to which she responded “yes”! Then I watched as every other passenger held onto their 2 items and boarded!! Then when we arrived in Knoxville our 2 carry ons had been put with all the other luggage and we had to go to baggage pick up and wait for all the big checked bags to come off the carousel! So she lied!! Frustrating. Next time I won’t be so nice!

It was a good experience except when boarding a female flight attendant did not go out of her way to assist my teenage daughters in finding space for their carry-ons after their compartments were full.

On time departure, smooth trip, flight attendant told through passengers the gate we would arrive at and the gate our outbound flight was departing from. Early arrival

Checking in at the airport the agent only booked the first keg of my trip and had my checked luggage going to the airport with a layover! Never was issued a boarding pass for the second leg or received sticker fir my checked bag. All was well in the end! Delta agents helped to resolve the situation!!!

Delayed due to an ill passenger after loading. Not preventable on Delta's part. Was in first class. The seats are becoming worn and detaching from their velcro attachments. Only got snacks on flight. The attendant was not the friendliest.

I would fly again the whole experience was great. The only feed back I can give that they don't do that American Airlines does is the crew there is more humorous with boarding and thank their passengers. It makes it more fun to fly with them. I would however fly Delta again.

From Atlanta to Cabo I would have hoped on a plane that size I would have been able to breathe and wiggle my feet a little! The leg room in that plane is non existent and I am only 5”4’. And the air vent either wasn’t working very well or just could not blow air from the ceiling to the seat area as I was suffocating through the entire flight! And please don’t say I would have been more comfortable in first class because I cannot afford those rates and have always travelled Main Cabin without issues !

The pilots were good. Disappointing when planes don't have electrical ports

I liked the piloting of the aircraft. Very disappointed about lack of electrical ports. Also, although a short flight. there was enough time to hand out snacks to comfort + seats as was done for first class.

Surprisingly easy! I was hesitant to try this, but the cost swayed me. I actually felt like I had less stress than all the taxiing and possible delays that occur with short regional flights where you spend less time in the air than getting to and from the plane..

This flight was delayed multiple times and eventually canceled around 2-3ish. Original take off time was around 10:30am. By 3, there were no other options out of Houston, so stuck in Houston for from 3pm - 11am the next day.

Should have video screens Plane audio was poor and without wired connection hard to understand crew. Should serve more than just cups of water and pretzels on six hour flight. Did not see crew rest of flight. Fix charging sockets to retain charging blocks.

I paid $380 for my one-way ticket from California to Minnesota. The fair did not include online check-in. I received instructions from their app to check in at a kiosk. At the kiosk, the boarding pass would not print until an actual person came to verify that I had a personal item and not a carry-on item, On the plane, the person next to me was drunk and allowed to continue to order alcohol. United is garbage I’d rather fly spirit.

The plane was dirty and the in seat air wasn't blowing as planes usually do.

Generally good but there wasn’t any staff available when my luggage didn’t appear at baggage claim in Fresno. It took about half an hour to locate a staff member to open up the locked room where it was being kept.

Do not like the feeling of being in the basic economy. Everyone should feel good no matter what.

All flights were on time and boarding was issue free

Terrible! The plane was old and you are required to connect your own device to their Wi-Fi rather than have entertainment options in the back of the seat in front of you. The Wi-Fi went out during the flight and there was only one plug for the devices every two seats. Three out of five surrounding my family did not work. The seats and spaces under them were so small I could not fit my backpack, which I’ve always brought on flights and fit before no problem. The crew were unpleasant and patronizing.

Great! The plane was decently sized and comfortable. The staff was nice and there was great in flight entertainment

Not being able to purchase my check in baggage online was a negative.

LATE LATE LATE!!! Plagued by late AA flights on this trip. Such a drag. This one was by far the worst.

Same basket of unhealthy prepackaged snacks (junk food) which was depleted by the time it got to my row!!

We experience delays on departure and connecting flights resulting in 14 hour to our next departure. We were accommodated with a night's stay but was only provided a 12 dollar meals accommodation. The airlines rules state.at least 50 dollars. In any case, it can not make up for the whole day missed on our vacation in Sydney Australia.

Flight from PHL to PHX arrived 50 minutes early and a gate was available. First class flight attendant Stephanie was very friendly and polite. Sanitizing wipes should be provided with meals in addition to refresher towels.

flight delayed so missed connection and this had to rebook for next day

Flight departed PHL one hour late due to late arrival of aircraft. On board services were okay. First class menu does not offer any new items; same desserts (cheese & crackers or Mango sorbet). At least there were no credit card promotions during the flight.

After sitting on plane for 7+ hours, flight was canceled. And to makes matters worse, my suitcase is in baggage hell!

Terrible Ticketing and Check in process. I learned that AA unilaterally cancelled my premium seating from PHL to CLT and from CLT to JAN. They did, however, refund my money, but my seating was subsequently severely downgraded. They didn’t have a seat for my unless I paid for it! Not cool! Consequently, Check-in took 45 min. AA is usually great, but this was my worst experience with AA ever. Appalling they they arbitrarily cancel my seats threatening loss of flight if I didn’t pay for a seat!!!! -John

We liked quick boarding and on time departure. Seats were very uncomfortable.

For it to have left on time! Instead of two hours early with zero notice

Flight kept delayed from morning to late afternoon so I had to make other arrangements

Crew was nice, explained emergency protocol very well. Flight took off and arrived on time. Pilot explained the small delay that occurred with docking and providing updates. I would definitely fly spirit again.

Terrible… missed our flight due to ridiculously long time to go thru baggage check-in!

The crew was not great or professional. It seemed like they didn't really want to be there. A true lack of effort for accommodating customers.

Everything was really good but the seats are not very comfortable.

I paid for WiFi, but it (WiFi) was very very slow, will never take again! Impossible open Utube 😤😤😤

I had no legroom, although I paid for extra legroom. I could barely put my bag in front of my feet and under the seat. The Wi-Fi was horrible. In fact the flight attendant said that they had to reboot it and see if it was going to work and never did.

The guy with severe body odor sat next to me. For the whole duration of the flight it was a torture. The airline should have better policy on limiting people with bad body odor to board the flight. Passengers should not be the ones to endure bad odor for the whole duration of the flight. The airline should be e the one to ensure decent air quality for ever passenger.

Overall it was a miserable experience... I will never fly spirit for more than a 3 hour flight or overnight.

Frontier is a crappy airline nothing about it is honest

I didn't get to do this flight l, hard to review

Not good 😐 Over priced baggage fees Small hard seats No wifi or entertainment options 😕

Didn't like anything!! Horrible flight. Small seating area and hard seats. Butt was sore after 2 hour flight to Seattle No entertainment or free refreshments No wifi or USB charging receptacles to charge phone entoute like other airliners Luggage rates were 3 times as much as competitors. Difficult to navigate online luggue process to pre pay before flight Overall bad experience WILL NEVER RIDE OR RECOMMEND FRONTIER TO FRIENDS OR FAMILY MEMBERS!!! THIS IS A SHAME!! MOST MESERIBLE FLIGHT OF MY LIFE!! AND I THOUGHT SPIRIT WAS 👎 YOU GOT THEM BEAD HANDS DOWN!!

Flight was a little late taking off. Seats are too upright, no ports to charge devices, no wifi, no entertainment

Six hour delay. Poor customer service. No voucher. Bad communication. Missed important appointments.

Our flight was delayed an hour, then when we got to board our flight finally, we were waiting in our seats for take off for 45 minutes before it was communicated that there was a maintenance issue therefore we waited on the plane for over an hour while that was resolved. We did not get to Phoenix until almost 3 hours after we were originally supposed to. This was the first and last time I will be flying Frontier.

Flight was canceled with little warning. Flight was rebooked through Ontario, California and connecting flight was delayed by over three hours. Frontier is living up to their Greyhound of the skies reputation for sure.

I purchased a carry on bag online…was supposed to cost $72 but after a whole slew of bs charges, the total was over $175.00. Because of these hidden charges, I will not even consider flying Frontier ever again. It’s just not worth the hassle. I’m scratching this company off my list forever.

Flight was OK. Seats were good no cell phone charges on the plane no TVs or entertainment.

Book cheap flights from Philadelphia to St. Louis

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Philadelphia to St. Louis found on KAYAK in the last 72 hours.
6/5Wed
nonstopFrontier
2h 27mPHL-STL
$29
6/10Mon
nonstopFrontier
2h 27mPHL-STL
$39
5/30Thu
1 stopSpirit Airlines
13h 19mPHL-STL
$70
6/5Wed
1 stopSpirit Airlines
25h 16mPHL-STL
$75
5/30Thu
nonstopAmerican Airlines
2h 44mPHL-STL
$90
6/10Mon
1 stopDelta
5h 15mPHL-STL
$99
6/7Fri
nonstopAmerican Airlines
2h 36mPHL-STL
$115
5/15Wed
1 stopDelta
5h 03mPHL-STL
$284
7/3Wed
2 stopsUnited Airlines
10h 40mPHL-STL
$313
6/25Tue
2 stopsUnited Airlines
24h 19mPHL-STL
$347

Search by stops

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Last minute flights from Philadelphia to St. Louis

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Philadelphia to St. Louis that are departing in the next 10 days.
5/13Mon
multi-stopSpirit Airlines
14h 42mPHL-STL
5/14Tue
multi-stopSpirit Airlines
17h 25mSTL-PHL
$280
5/13Mon
multi-stop
27h 04mPHL-STL
5/16Thu
multi-stop
9h 55mSTL-PHL
$295
5/13Mon
multi-stopFrontier
12h 19mPHL-STL
5/14Tue
multi-stopFrontier
11h 34mSTL-PHL
$344
5/11Sat
multi-stopFrontier
7h 42mPHL-STL
5/15Wed
multi-stopFrontier
8h 20mSTL-PHL
$364
5/11Sat
nonstopAmerican Airlines
2h 29mPHL-STL
5/14Tue
nonstopAmerican Airlines
2h 10mSTL-PHL
$553
5/11Sat
multi-stopAmerican Airlines
6h 49mPHL-STL
5/14Tue
nonstopAmerican Airlines
2h 11mSTL-PHL
$561
5/11Sat
multi-stopDelta
5h 03mPHL-STL
5/12Sun
multi-stopDelta
5h 27mSTL-PHL
$590
5/13Mon
multi-stopDelta
4h 34mPHL-STL
5/13Mon
multi-stopDelta
5h 14mSTL-PHL
$648
5/10Fri
multi-stopUnited Airlines
4h 59mPHL-STL
5/11Sat
multi-stopUnited Airlines
7h 54mSTL-PHL
$752
5/11Sat
multi-stopUnited Airlines
9h 23mPHL-STL
5/11Sat
multi-stopUnited Airlines
6h 03mSTL-PHL
$1,043

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Philadelphia - St. Louis Flights

Departure:

Philadelphia (undefined)United States

Destination:

St. Louis (STL)United States

Return flight deals:

St. Louis - Philadelphia

Cabin classes:

$1,286
$88