Cheap Flights from St. Louis to Philadelphia

Prices were available within the past 7 days and starts at $39 for one-way flights and $126 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Nov 18
STL
St. Louis
to
PHL
Philadelphia
$39

One way

found 1 day ago

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Wed, Oct 28
STL
St. Louis
to
PHL
Philadelphia
$45

One way

found 1 hour ago

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Mon, Nov 2
STL
St. Louis
to
PHL
Philadelphia
$81

One way

just found

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Mon, Nov 2
STL
St. Louis
to
PHL
Philadelphia
$87

One way

just found

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Wed, Nov 4
STL
St. Louis
to
TTN
Trenton
$94

One way

found 6 days ago

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Fri, Oct 16
STL
St. Louis
to
PHL
Philadelphia
$100

One way

found 1 hour ago

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Fri, Nov 13
STL
St. Louis
to
PHL
Philadelphia
$101

One way

found 3 hours ago

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Mon, Nov 2
STL
St. Louis
to
PHL
Philadelphia
$103

One way

just found

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Sun, Nov 22
STL
St. Louis
to
PHL
Philadelphia
$107

One way

found 11 hours ago

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Mon, Nov 2
STL
St. Louis
to
PHL
Philadelphia
$109

One way

just found

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Wed, Nov 18 - Wed, Nov 18
STL
St. Louis
to
PHL
Philadelphia
$126

Roundtrip

found 2 days ago

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Thu, Oct 22 - Mon, Oct 26
STL
St. Louis
to
PHL
Philadelphia
$126

Roundtrip

found 1 day ago

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Mon, Oct 26 - Tue, Nov 3
STL
St. Louis
to
PHL
Philadelphia
$132

Roundtrip

found 1 day ago

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Sat, Oct 24 - Wed, Oct 28
STL
St. Louis
to
PHL
Philadelphia
$133

Roundtrip

just found

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Thu, Oct 22 - Mon, Oct 26
STL
St. Louis
to
PHL
Philadelphia
$144

Roundtrip

found 1 day ago

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Fri, Nov 20 - Fri, Nov 20
STL
St. Louis
to
PHL
Philadelphia
$146

Roundtrip

found 2 days ago

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Wed, Oct 28 - Sun, Nov 1
STL
St. Louis
to
PHL
Philadelphia
$146

Roundtrip

found 13 hours ago

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Thu, Oct 22 - Mon, Oct 26
STL
St. Louis
to
PHL
Philadelphia
$148

Roundtrip

found 1 day ago

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Mon, Nov 23 - Mon, Nov 23
STL
St. Louis
to
PHL
Philadelphia
$151

Roundtrip

found 7 days ago

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Wed, Oct 28 - Sun, Nov 1
STL
St. Louis
to
PHL
Philadelphia
$152

Roundtrip

found 13 hours ago

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Wed, Nov 18
STL
St. Louis
to
PHL
Philadelphia
$39

One way

found 1 day ago

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Wed, Oct 28
STL
St. Louis
to
PHL
Philadelphia
$45

One way

found 1 hour ago

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Mon, Nov 2
STL
St. Louis
to
PHL
Philadelphia
$81

One way

just found

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Mon, Nov 2
STL
St. Louis
to
PHL
Philadelphia
$87

One way

just found

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Wed, Nov 4
STL
St. Louis
to
TTN
Trenton
$94

One way

found 6 days ago

Open STL to TTN flights search result page
Fri, Oct 16
STL
St. Louis
to
PHL
Philadelphia
$100

One way

found 1 hour ago

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Fri, Nov 13
STL
St. Louis
to
PHL
Philadelphia
$101

One way

found 3 hours ago

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Mon, Nov 2
STL
St. Louis
to
PHL
Philadelphia
$103

One way

just found

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Sun, Nov 22
STL
St. Louis
to
PHL
Philadelphia
$107

One way

found 11 hours ago

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Mon, Nov 2
STL
St. Louis
to
PHL
Philadelphia
$109

One way

just found

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Wed, Nov 18 - Wed, Nov 18
STL
St. Louis
to
PHL
Philadelphia
$126

Roundtrip

found 2 days ago

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Thu, Oct 22 - Mon, Oct 26
STL
St. Louis
to
PHL
Philadelphia
$126

Roundtrip

found 1 day ago

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Mon, Oct 26 - Tue, Nov 3
STL
St. Louis
to
PHL
Philadelphia
$132

Roundtrip

found 1 day ago

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Sat, Oct 24 - Wed, Oct 28
STL
St. Louis
to
PHL
Philadelphia
$133

Roundtrip

just found

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Thu, Oct 22 - Mon, Oct 26
STL
St. Louis
to
PHL
Philadelphia
$144

Roundtrip

found 1 day ago

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Fri, Nov 20 - Fri, Nov 20
STL
St. Louis
to
PHL
Philadelphia
$146

Roundtrip

found 2 days ago

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Wed, Oct 28 - Sun, Nov 1
STL
St. Louis
to
PHL
Philadelphia
$146

Roundtrip

found 13 hours ago

Open STL to PHL flights search result page
Thu, Oct 22 - Mon, Oct 26
STL
St. Louis
to
PHL
Philadelphia
$148

Roundtrip

found 1 day ago

Open STL to PHL flights search result page
Mon, Nov 23 - Mon, Nov 23
STL
St. Louis
to
PHL
Philadelphia
$151

Roundtrip

found 7 days ago

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Wed, Oct 28 - Sun, Nov 1
STL
St. Louis
to
PHL
Philadelphia
$152

Roundtrip

found 13 hours ago

Open STL to PHL flights search result page

Reviews from verified customers

Mar 1, 2020

Aircraft was small and first class seating was limited. The staff was friendly and helpful.

A verified traveler
St. Louis to Philadelphia · American Airlines
Jan 13, 2020

Everything went smoothly.

A verified traveler
St. Louis to Philadelphia · American Airlines
Oct 20, 2019

Quick and professional

A verified traveler
St. Louis to Philadelphia · American Airlines
Oct 18, 2019

Just good trip all around

A verified traveler
St. Louis to Philadelphia · American Airlines
Aug 4, 2019

Very helpful with handicapped passenger. Attentive.

A verified traveler
St. Louis to Philadelphia · American Airlines
Jul 24, 2019

Why do you put answers on your survey that are no where close to true like free check bag I paid for mine there was nothing available like your questions act like ,

A verified traveler
St. Louis to Philadelphia · American Airlines
Jun 9, 2019

Clean plane and staff was wonderful.

A verified traveler
St. Louis to Philadelphia · American Airlines
May 26, 2019

Staff were fine folks👍

A verified traveler
St. Louis to Philadelphia · American Airlines
May 10, 2019

Check in self serve kiosk is confusing. They should have a no option for military service. There was 5 of us who sat there and didn’t know what to pick.

A verified traveler
St. Louis to Philadelphia · American Airlines
Apr 30, 2019

My original flight was overbooked so they offered me a voucher for a free trip for later. I'm very happy about the free trip for later.

A verified traveler
St. Louis to Philadelphia · American Airlines

St. Louis to Philadelphia route information

Origin Airport Lambert-St. Louis Intl.
Destination Airport Philadelphia Intl.
Airlines Serving American Airlines, Delta, Frontier Airlines, United
Flight Price $125
Distance 811 mi

Cheap STL to PHL Flights

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