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St. Charles

$54+ Cheap flights from Philadelphia (PHL) to St. Charles, MO

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 2/22. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — STL
Dec 24 — Dec 311
Tue 12/24
Tue 12/31
1 adult, Economy
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The best prices from Philadelphia to St. Charles are usually found in June or July, booked 86 days in advance, depart on a Wednesday or Saturday and return on a Saturday

Cheap flight deals from Philadelphia to St. Charles

Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to St. Charles (CH5). 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 December 19, 2024.

Round-trip from

$314
(Mytrip)

One-way from

$54
(Frontier)

Popular in

December

Cheapest in

June

Average price

$418
From Philadelphia to St. Charles
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One-way flight from Philadelphia to St. Charles
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High demand for flights, 16% potential price rise
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Best time to find cheap flights, 2% potential price drop
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Average for round-trip flights in December 2024
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Find flight deals from Philadelphia to St. Charles

Cheapest flights from Philadelphia to St. Charles
Explore the most affordable flight options available from Philadelphia to St. Charles. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 19, 2024.

This Gotogate deal was found by Cheapflights users on 12/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/313:34 pmPHL - STL
1 stop8h 54mFrontier
Wed 1/13:53 pmSTL - PHL
1 stop8h 29mFrontier
Deal found 12/19$341
This American Airlines deal was found by Cheapflights users on 12/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/317:14 pmPHL - STL
Nonstop2h 45mAmerican Airlines
Wed 1/16:30 amSTL - PHL
Nonstop2h 09mAmerican Airlines
Deal found 12/19$357
This Delta deal was found by Cheapflights users on 12/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/251:14 pmPHL - STL
1 stop6h 33mDelta
Tue 12/315:17 pmSTL - PHL
1 stop4h 28mDelta
Deal found 12/18$376
This CheapOair deal was found by Cheapflights users on 12/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/298:02 pmPHL - STL
1 stop28h 38mMultiple Airlines
Sun 1/54:27 pmSTL - PHL
1 stop6h 38mMultiple Airlines
Deal found 12/18$391
This Southwest deal was found by Cheapflights users on 12/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/255:55 pmPHL - STL
Nonstop2h 30mSouthwest
Tue 12/316:10 pmSTL - PHL
Nonstop2h 05mSouthwest
Deal found 12/18$393
This United Airlines deal was found by Cheapflights users on 12/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/264:38 pmPHL - STL
1 stop6h 07mUnited Airlines
Thu 1/28:25 amSTL - PHL
1 stop4h 51mUnited Airlines
Deal found 12/19$663

Find flights from Philadelphia to St. Charles within your budget

Customize your flight search to find flights from Philadelphia to St. Charles 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 2,558,603 searches. Data last updated December 19, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

PhiladelphiaSt. Louis

PHL - STL

PHLSTL

Philadelphia

Mon 2/3

11:02 am-2:43 pm

3 stops28h 41m

Lambert-St Louis

Thu 2/6

4:28 pm-8:50 pm

3 stops27h 22m

$314

PhiladelphiaSt. Louis

PHL - STL

PHLSTL

Philadelphia

Tue 1/7

11:15 am-12:57 pm

Nonstop2h 42m

Lambert-St Louis

Wed 1/8

5:40 am-2:54 pm

1 stop8h 14m

$322

PhiladelphiaSt. Louis

PHL - STL

PHLSTL

Philadelphia

Thu 2/20

8:20 pm-11:30 am

3 stops40h 10m

Lambert-St Louis

Tue 2/25

4:00 pm-7:04 pm

2 stops26h 04m

$326

PhiladelphiaSt. Louis

PHL - STL

PHLSTL

Philadelphia

Tue 1/7

8:40 am-10:20 am

Nonstop2h 40m

Lambert-St Louis

Wed 1/8

6:05 pm-9:10 pm

Nonstop2h 05m

$338

PhiladelphiaSt. Louis

PHL - STL

PHLSTL

Philadelphia

Tue 12/31

10:47 am-11:28 pm

1 stop13h 41m

Lambert-St Louis

Sat 1/4

4:24 pm-7:32 am

1 stop14h 08m

$343

PhiladelphiaSt. Louis

PHL - STL

PHLSTL

Philadelphia

Sat 1/18

11:30 am-6:02 pm

1 stop7h 32m

Lambert-St Louis

Sat 1/25

4:40 pm-12:49 am

1 stop7h 09m

$376

PhiladelphiaSt. Louis

PHL - STL

PHLSTL

Philadelphia

Wed 1/1

10:33 am-3:47 pm

1 stop6h 14m

Lambert-St Louis

Mon 5/26

5:18 pm-12:32 am

1 stop6h 14m

$420

PhiladelphiaSt. Louis

PHL - STL

PHLSTL

Philadelphia

Sat 2/22

4:23 pm-11:43 pm

1 stop8h 20m

$54

PhiladelphiaSt. Louis

PHL - STL

PHLSTL

Philadelphia

Sun 1/19

6:08 am-2:43 pm

1 stop9h 35m

$110

PhiladelphiaSt. Louis

PHL - STL

PHLSTL

Philadelphia

Tue 2/4

6:39 am-6:41 pm

3 stops13h 02m

$148

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/19

Showing 1-10 of 14 results
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Best time to book a flight from Philadelphia to St. Charles

Have a flexible travel schedule? Discover the best time to fly to St. Charles from Philadelphia with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Philadelphia to St. Charles

Get recent, data-driven insights about flights from Philadelphia to St. Charles including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Philadelphia to St. Charles?

Use this chart to determine the optimal time to book a round-trip flight from Philadelphia to St. Charles. Price data was last updated on December 13, 2024.

Booking 86 days in advance of your planned departure date is, on average, the best time to get cheap flights from Philadelphia to St. Charles. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Philadelphia to St. Charles?

Currently, August is the cheapest month in which you can book a flight from Philadelphia to St. Charles (average of $311). Flying from Philadelphia to St. Charles in March is currently the most expensive (average of $356). 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.

What is the cheapest time of day to fly from PHL to CH5?

Find hourly flight availability from Philadelphia to St. Charles. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 19, 2024.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Philadelphia to St. Charles as you normally would.

What is the cheapest day to fly from Philadelphia to St. Charles?

Use this chart to determine the cheapest time to fly round-trip from Philadelphia to St. Charles. Price data was last updated on October 13, 2024.

Travelers seeking maximum savings on their Philadelphia to St. Charles flight should consider departing on Wednesday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in St. Charles by month

Plan your trip to St. Charles by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Charles ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Charles when rainfall is around 2.2 in.

Temperature in St. Charles by month

Plan your trip to St. Charles by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Charles, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing St. Charles

Get insights into the airlines that provide service to St. Charles. 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. Charles. Reviews last updated December 19, 2024.
See what other customers who have flown with American Airlines, Southwest and Frontier from Philadelphia to St. Charles have to say. 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
8.1
Very good
4,836 reviews

Boarding

8.2

Overall

8.1

Crew

8.7

Food

7.2

Entertainment

7.7

Comfort

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,836 reviews
Southwest
8.1
Very good
4,836 reviews

Boarding

8.2

Overall

8.1

Crew

8.7

Food

7.2

Entertainment

7.7

Comfort

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,600 reviews
Southwest
8.1
Very good
4,836 reviews

Boarding

8.2

Overall

8.1

Crew

8.7

Food

7.2

Entertainment

7.7

Comfort

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
9,048 reviews
Southwest
8.1
Very good
4,836 reviews

Boarding

8.2

Overall

8.1

Crew

8.7

Food

7.2

Entertainment

7.7

Comfort

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,836 reviews

Boarding

8.2

Overall

8.1

Crew

8.7

Food

7.2

Entertainment

7.7

Comfort

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Spirit Airlines
6.3
Okay
8,120 reviews
Southwest
8.1
Very good
4,836 reviews

Boarding

8.2

Overall

8.1

Crew

8.7

Food

7.2

Entertainment

7.7

Comfort

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Related info for your journey

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

  • What airport do you fly from for flights from Philadelphia to St. Charles?

    Philadelphia (PHL), located 7.0 mi from the city center, is the airport you fly out of when you book flights from Philadelphia to St. Charles. 5 airlines have flights from Philadelphia to St. Charles on a regular basis. Booking flights from Philadelphia to St. Charles should not be difficult; the airport handles an average of 4 outbound flights to St. Charles per day.

  • How popular is this Philadelphia to St. Charles flight route?

    Flights from Philadelphia to St. Charles have been viewed 15 times in the past calendar month.

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

    One-way options have recently been found by users for as low as $54 on Frontier. Other airlines that offer cheap prices include Spirit Airlines from $110 and Delta from $178 one-way.

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

    No one likes to see their flight delayed. When booking a flight from Philadelphia to St. Charles consider choosing PSA Airlines (88%), Southwest (85%) or Qatar Airways (85%) as they are the most reliable in getting you off to your destination on time.

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

    While on average a flight from Philadelphia to St. Charles is generally $636, our data shows the cheapest flight currently is $169. When looking at the most popular route, (Philadelphia - Lambert-St Louis), you can expect to pay $177 for that flight.

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

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

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

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

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

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

  • What is the cheapest month to book a flight from Philadelphia to St. Charles?

    Currently, August is the cheapest month in which you can book a flight from Philadelphia to St. Charles (average of $311). Flying from Philadelphia to St. Charles in March is currently the most expensive (average of $356). 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.

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Alternative routes for Philadelphia to St. Charles

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. Charles

Discover the top 5 airlines that operate flights from Philadelphia to St. Charles. 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 2,558,603 searches. Data last updated December 19, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$52Average$98FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$142Average$445FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$196Average$482FlexibilityNo cancel feeOn-time69%
DeltaCheapest$200Average$430FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$241Average$416FlexibilityNo cancel feeOn-time63%
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