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Find cheap Southwest flights to Philadelphia

RDU — PHL
Aug 26 — Sep 21
Wed 8/26
Wed 9/2
1 adult, Economy
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Find Southwest flight deals to Philadelphia

Cheapest Southwest flights from USA to Philadelphia
Explore the most affordable Southwest flight options available from USA to Philadelphia. Find the lowest fares with prices last updated on July 27, 2026.

This Southwest deal was found by Cheapflights users on 7/24. 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 8/197:00 am
ATL
-
PHL
1 stop7h 05m
Southwest
Wed 8/267:15 am
PHL
-
ATL
1 stop5h 00m
Southwest
Deal found 7/24$151
This Southwest deal was found by Cheapflights users on 7/27. 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.
Sat 8/226:10 am
ATL
-
PHL
1 stop6h 05m
Southwest
Mon 8/245:55 am
PHL
-
ATL
1 stop6h 15m
Southwest
Deal found 7/27$155
This Southwest deal was found by Cheapflights users on 7/27. 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.
Mon 8/248:00 am
ATL
-
PHL
1 stop4h 25m
Southwest
Mon 8/316:20 am
PHL
-
ATL
1 stop6h 25m
Southwest
Deal found 7/27$159

Flights to Philadelphia with Southwest at a glance

Find detailed information about Southwest flights from USA to Philadelphia. Explore the options provided by Southwest to plan your journey from USA to Philadelphia. Data last updated July 27, 2026.

Popular in

June

Cheapest in

October

Average price

$416

Round-trip from

$151

One-way from

$76

Good one-way deal

$214 or less
Highest demand for flights to Philadelphia with Southwest; 9% potential price increase.
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Best time to find cheap flights to Philadelphia with Southwest; 1% potential price drop.
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Average price for flights to Philadelphia with Southwest (round-trip).
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Southwest
  • Southwest
  • 9/9-9/16
  • 2 total stops
  • 12h 50m total
  • USA to Philadelphia
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Southwest
  • Southwest
  • 8/22
  • 1 total stop
  • 6h 05m total
  • USA to Philadelphia
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Price to beat on a one-way flight from the United States to Philadelphia with Southwest.
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Cheapflights Insights

Find cheap Southwest flights to Philadelphia

How long is the flight to Philadelphia with Southwest?

On average, Southwest flights from the United States to Philadelphia take 2 hours 43 minutes. Flights to Philadelphia from other popular cities in the United States will vary in length. Below are a few examples of popular routes and their flight times.

Southwest weekly flight availability to Philadelphia

The most flights to Philadelphia operated by Southwest are scheduled on a Monday (15 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (14 on average).

When is the best time to book a flight to Philadelphia with Southwest?

The best time to book a flight to Philadelphia with Southwest is 84 days before departure. On average, fares are higher if you book on the same day as departure.

When is the cheapest time to fly to Philadelphia with Southwest?

Users looking for the cheapest Southwest fares to Philadelphia should consider flying on Friday afternoons, when prices are typically cheapest. Budget-minded travellers will want to avoid Monday afternoons, when prices are usually at their highest.

FAQs about flights to Philadelphia with Southwest

  • Which airport do Southwest flights arrive at when travelling to Philadelphia?

    Southwest flights on this route tend to land at Philadelphia Airport.

  • Is Southwest the cheapest airline for a flight to Philadelphia?

    Flight prices will depend on many factors like date, time and cabin class so it is worth comparing flights before booking. Based on Cheapflights data the cheapest average return price for flights to Philadelphia tends to be with Avelo Airlines.

  • Are there alternative airlines other than Southwest that fly to Philadelphia?

    American Airlines, Frontier and Delta all fly to Philadelphia and offer an alternative to Southwest.

  • How much is a flight to Philadelphia with Southwest?

    The average price for a return flight with Southwest is $444; with a one-way flight around $254.

See more FAQs

Reviews of Southwest

See what Cheapflights users have to say about their Southwest experience.
Southwest
8.0
Very good
4,229 reviews
Overview

Comfort

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Popular Southwest flights

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