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฿3,025+ Cheap flights from Philadelphia

This is the cheapest return flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 18/9. 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.
PHL — BKK
25 Aug — 1 Sep1
1 adult

What to know about flights from Philadelphia

Discover essential information about flights departing from Philadelphia, including flight schedules, destinations, airlines operating at the Philadelphia airport, and any specific guidelines or requirements for travellers. Please note that the information is based on the most recent updates available. Data last updated 20 August 2025.

Good round-trip deal

฿8,193 or less
Price to beat on a round-trip flight from Philadelphia.
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Find flights from Philadelphia

Cheapest flights from Philadelphia
Explore the most affordable flight options available from Philadelphia. Find the lowest fares based on data from user searches, with prices last updated on 20 August 2025.

Wed 8/1019:00PHL - SEA
1 stop7h 57mเดลต้า
Tue 14/1006:00SEA - PHL
1 stop8h 55mเดลต้า
Deal found 18/8฿9,010
Tue 11/1118:15PHL - SEA
1 stop8h 59mเดลต้า
Sat 15/1113:45SEA - PHL
1 stop6h 58mเดลต้า
Deal found 17/8฿9,076
Thu 11/918:25PHL - SEA
1 stop8h 29mเดลต้า
Mon 15/919:30SEA - PHL
1 stop7h 15mเดลต้า
Deal found 17/8฿9,141
Tue 16/910:10PHL - SEA
1 stop8h 22mUnited Airlines
Tue 23/905:02SEA - PHL
2 stops9h 19mUnited Airlines
Deal found 17/8฿9,173
Wed 12/1119:12PHL - SEA
Nonstop6h 18mอลาสกาแอร์ไลน์
Sun 16/1121:30SEA - PHL
Nonstop5h 12mอลาสกาแอร์ไลน์
Deal found 17/8฿9,271
Wed 17/918:25PHL - SEA
1 stop8h 00mเซาท์เวสต์แอร์ไลน์
Wed 24/905:35SEA - PHL
1 stop9h 05mเซาท์เวสต์แอร์ไลน์
Deal found 18/8฿9,303
Tue 23/906:00PHL - SEA
1 stop7h 36mเดลต้า
Thu 2/1017:45SEA - PHL
1 stop9h 00mเดลต้า
Deal found 18/8฿9,336
Fri 12/918:55PHL - SEA
1 stop8h 04mเดลต้า
Tue 16/906:00SEA - PHL
1 stop8h 20mเดลต้า
Deal found 19/8฿9,368
Mon 15/1218:15PHL - SEA
1 stop8h 59mเดลต้า
Sat 10/112:00SEA - PHL
1 stop8h 46mเดลต้า
Deal found 18/8฿9,401
Thu 23/1019:11PHL - SEA
Nonstop6h 21mอลาสกาแอร์ไลน์
Mon 27/1021:30SEA - PHL
Nonstop5h 12mอลาสกาแอร์ไลน์
Deal found 18/8฿9,498
Fri 12/918:10PHL - SEA
1 stop8h 55mเซาท์เวสต์แอร์ไลน์
Tue 16/923:10SEA - PHL
1 stop7h 45mเซาท์เวสต์แอร์ไลน์
Deal found 18/8฿9,531
Tue 16/917:15PHL - SEA
1 stop9h 39mเดลต้า
Fri 26/917:45SEA - PHL
1 stop9h 00mเดลต้า
Deal found 18/8฿9,563

Find flights from Philadelphia within your budget

 
Find flights departing from Philadelphia that match your specified budget. Filter results by price range, allowing you to narrow down options and find flights that fit within your financial constraints. Please note that the search results are based on data from user searches, with fares last updated on 20 August 2025. In the last 7 days, Cheapflights users made a total of 17,341 searches

Fly to

Suvarnabhumi

Route

Depart

Return

Price

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Sat 11/10

07:00-09:49

Nonstop5h 49m

Seattle/Tacoma Intl

Tue 21/10

21:23-05:40

Nonstop5h 17m

฿9,010

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Tue 11/11

07:02-10:13

Nonstop6h 11m

Seattle/Tacoma Intl

Sun 16/11

09:59-18:12

Nonstop5h 13m

฿9,010

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Sat 11/10

19:11-22:32

Nonstop6h 21m

Seattle/Tacoma Intl

Wed 22/10

09:45-18:11

Nonstop5h 26m

฿9,010

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Tue 16/9

07:22-10:18

Nonstop5h 56m

Seattle/Tacoma Intl

Tue 23/9

21:45-06:02

Nonstop5h 17m

฿9,010

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Fri 26/9

07:22-10:18

Nonstop5h 56m

Seattle/Tacoma Intl

Fri 3/10

21:30-05:47

Nonstop5h 17m

฿9,010

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Wed 22/10

19:11-22:32

Nonstop6h 21m

Seattle/Tacoma Intl

Sun 26/10

21:30-05:42

Nonstop5h 12m

฿9,010

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Tue 16/9

07:22-10:18

Nonstop5h 56m

Seattle/Tacoma Intl

Fri 26/9

21:45-06:02

Nonstop5h 17m

฿9,010

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Fri 21/11

07:10-10:17

Nonstop6h 07m

Seattle/Tacoma Intl

Tue 2/12

21:35-05:46

Nonstop5h 11m

฿9,010

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Wed 19/11

07:02-10:13

Nonstop6h 11m

Seattle/Tacoma Intl

Thu 4/12

21:35-05:46

Nonstop5h 11m

฿9,010

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Sat 22/11

07:10-10:17

Nonstop6h 07m

Seattle/Tacoma Intl

Wed 3/12

21:35-05:46

Nonstop5h 11m

฿9,010

Flights are sorted by cheapest return flights first.

Deals found on 17/8

Showing 1-10 of 60 results
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Best time to book a flight from Philadelphia

Have a flexible travel schedule? Discover the best time to fly from Philadelphia with our price prediction graph.
Estimated return 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

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

When is the best time to book a flight from Philadelphia?

Use this chart to determine the optimal time to book a return flight from Philadelphia to Suvarnabhumi. Price data was last updated on 8 August 2025.

Booking 63 days in advance of your planned departure date is, on average, the best time to get cheap flights from Philadelphia. 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?

Currently, August is the cheapest month in which you can book a flight from Philadelphia (average of ฿22,120). Flying from Philadelphia in June will prove the most costly (average of ฿31,813). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

What are popular destinations to fly to from Philadelphia?

If you’re flying from Philadelphia, these routes are more frequently taken by airlines Chicago (439 flights per day), Orlando (348 flights per day) and Atlanta (318 flights per day).

Los Angeles
Los Angeles
From ฿248
San Francisco
San Francisco
From ฿498

What is the cheapest place to fly to from Philadelphia?

The cheapest city to fly to from Philadelphia is Los Angeles, with prices starting at ฿8,067. Explore other affordable destinations below.

Los Angeles
Los Angeles
From ฿248
San Francisco
San Francisco
From ฿498

Browse thousands of different options on Cheapflights for your next trip

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Direct flights from Pennsylvania

Book a direct flight from one of these other cities located in Pennsylvania.
Direct flights from Philadelphia
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Direct flights from Las Vegas
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Direct flights from Seattle
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Direct flights from Honolulu
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Direct flights from Austin
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Direct flights from New Orleans
Direct flights from Nashville
Direct flights from Fort Lauderdale
Direct flights from Anchorage
Direct flights from Norfolk
Direct flights from Rochester
Direct flights from Cleveland
Direct flights from San Antonio
Direct flights from Kansas City
Direct flights from St. Louis
Direct flights from Charleston
Direct flights from Bozeman

Related info for your journey

Access useful and relevant information related to your journey from Philadelphia. This can include details such as airport transportation, visa requirements, travel insurance, luggage regulations, and any other information that can ensure a smooth and hassle-free travel experience. Please note that the information is based on general guidance and may need to be verified with official sources. Data last updated 20 August 2025.

  • What are the most popular destinations to fly to from Philadelphia?

    The most selected flight destinations from Philadelphia for the current month are Atlanta, Boston, Chicago. While Atlanta, Boston, Nashville are the top choices made by travellers year-round.

  • What is the cheapest flight from Philadelphia to anywhere?

    Users have flown out of Philadelphia for as low as ฿8,067 to Los Angeles (prices may vary depending on the airline and departure time). On average, users have booked flights for ฿12,569 to fly from Philadelphia.

  • What is the cheapest month to fly from Philadelphia?

    At the present moment the cheapest month to fly from Philadelphia is currently August; with June being the most expensive. Prices will vary depending on multiple factors such as booking in advance, airline and departure airports and times.

  • Where are the cheapest places to fly to from Philadelphia?

    Here are some of the cheapest flight destinations from Philadelphia:
    Fly from Philadelphia to Bangkok from ฿27,877

  • How does Cheapflights help users find flights from Philadelphia?

    Cheapflights makes it easy to find flights from Philadelphia by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

  • Why should you use Cheapflights to find cheap flight tickets from Philadelphia?

    Cheapflights simply makes it quick and affordable to book flights from Philadelphia by bringing together all flight options from hundreds of airlines and agencies online — and we put them in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

  • Can Cheapflights find flights from Philadelphia with no change fees?

    Cheapflights does show flights with no change fees to all users. To see these options for flights from Philadelphia, users can toggle the no change fees filter when performing a flight search.

  • Can Cheapflights notify me if prices for flights from Philadelphia become cheaper?

    Yes, Cheapflights offers price alerts on flights from Philadelphia so you can book your travels when it’s right. The Price Alerts feature is available by clicking the bell icon next to the flight deals above and providing your email address.

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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Philadelphia?

Cheapflights makes it easy to find flights from Philadelphia by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Philadelphia?

Cheapflights simply makes it quick and affordable to book flights from Philadelphia by bringing together all flight options from hundreds of airlines and agencies online — and we put them in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Philadelphia with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Philadelphia, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Philadelphia become cheaper?

Yes, Cheapflights offers price alerts on flights from Philadelphia so you can book your travels when it’s right. The Price Alerts feature is available by clicking the bell icon next to the flight deals above and providing your email address.

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