Direct flights from St Louis to Philadelphia

Did you mean Flights from Philadelphia to St Louis?

St Louis

United States

STL

Lambert St Louis International Airport

Philadelphia

United States

PHL

Philadelphia International Airport

Route: Nonstop service available
Distance: 812 miles
Marketing airlines: 7 airlines
Aircraft: 8 aircraft types
Dates: Oct 19, 2026 – Oct 18, 2027

Observed award fares

A sample of one-way prices for one traveler from Roame’s fare cache. Points, fees, and seats describe the same observation. Availability can change; confirm with the loyalty program before transferring points.

Lowest price in this limited sample: 7,500 points + $25.00 for STL → PHL, Economy, on 2026-10-28, booked with Alaska Atmos Rewards. This is an observed fare, not a guaranteed price or the lowest price across all dates and programs.

Departure window: 2026-10-23 – 2026-11-21.

STL → PHLEconomy
AA3049
7,500 points+ $25.00
Departure
2026-10-28
Seats seen
9
Book with
Alaska Atmos Rewards
Observed (UTC)
2026-10-21 23:43
STL → PHLEconomy
AA3124
7,500 points+ $25.00
Departure
2026-10-28
Seats seen
9
Book with
Alaska Atmos Rewards
Observed (UTC)
2026-10-21 23:43
STL → PHLEconomy
AA5089
7,500 points+ $25.00
Departure
2026-10-30
Seats seen
4
Book with
Alaska Atmos Rewards
Observed (UTC)
2026-10-22 09:35
STL → PHLEconomy
AA3049
7,500 points+ $25.00
Departure
2026-10-30
Seats seen
9
Book with
Alaska Atmos Rewards
Observed (UTC)
2026-10-22 09:35
STL → PHLEconomy
AA1739
7,500 points+ $25.00
Departure
2026-10-30
Seats seen
9
Book with
Alaska Atmos Rewards
Observed (UTC)
2026-10-22 09:35
STL → PHLEconomy
AA4604
7,500 points+ $25.00
Departure
2026-11-02
Seats seen
4
Book with
Alaska Atmos Rewards
Observed (UTC)
2026-10-22 12:01
STL → PHLEconomy
AA4796
7,500 points+ $25.00
Departure
2026-11-03
Seats seen
1
Book with
Alaska Atmos Rewards
Observed (UTC)
2026-10-21 13:49
STL → PHLEconomy
AA4604
7,500 points+ $25.00
Departure
2026-11-03
Seats seen
9
Book with
Alaska Atmos Rewards
Observed (UTC)
2026-10-21 13:49
STL → PHLEconomy
AA4604
7,500 points+ $25.00
Departure
2026-11-07
Seats seen
2
Book with
Alaska Atmos Rewards
Observed (UTC)
2026-10-21 11:10
STL → PHLEconomy
AA4604
7,500 points+ $25.00
Departure
2026-11-14
Seats seen
7
Book with
Alaska Atmos Rewards
Observed (UTC)
2026-10-21 10:32
STL → PHLFirst
AA4604
15,000 points+ $25.00
Departure
2026-11-02
Seats seen
8
Book with
Alaska Atmos Rewards
Observed (UTC)
2026-10-22 12:01
STL → PHLFirst
AA4604
15,000 points+ $25.00
Departure
2026-11-03
Seats seen
8
Book with
Alaska Atmos Rewards
Observed (UTC)
2026-10-21 13:49

St Louis to Philadelphia route overview

Lambert St Louis International Airport (STL) serves St Louis; Philadelphia International Airport (PHL) serves Philadelphia.

The airports are 812 miles apart by great-circle distance.

Roame's current schedule feed shows nonstop service from STL to PHL.

Marketing airlines listed in the current schedule, including codeshare sellers, are American Airlines (AA), British Airways (BA), Aer Lingus (EI), Iberia (IB), Qatar Airways (QR), United Airlines (UA) and Southwest Airlines (WN). This list does not identify the operating airline for each flight; check the flight details before booking.

Published schedule dates span Oct 19, 2026 – Oct 18, 2027.

Marketing airlines on the St Louis to Philadelphia route

These are marketing airlines, including codeshare sellers. This list does not identify the operating airline for each flight; check the flight details before booking.

British Airways (BA)Codeshare only
Aer Lingus (EI)Codeshare only
Iberia (IB)Codeshare only
Qatar Airways (QR)Codeshare only
United Airlines (UA)Codeshare only

Airline alliance affiliations represented: Oneworld, Star Alliance

Aircraft flying from STL to PHL

Frequently asked questions

Which airports serve the St Louis to Philadelphia route?

Lambert St Louis International Airport (STL) is the origin airport and Philadelphia International Airport (PHL) is the destination airport.

How far is Philadelphia from St Louis?

STL and PHL are approximately 812 miles apart by great-circle distance.

Are there direct flights from STL to PHL?

Yes. Roame's current schedule feed shows nonstop service from STL to PHL.

Which airlines market flights from STL to PHL?

Which aircraft fly from STL to PHL?

Aircraft listed in the current schedule include Airbus A319 (319), Boeing 737-800 Winglets (73H), Boeing 737 MAX 8 (7M8), 7S7, CR5, Canadair Regional Jet 700 | Regional Jet 550 (CR7), Canadair Regional Jet 900 (CR9) and Embraer 175 (short wing) (E75).