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฿2,332+ 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 3/12. 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
15 Dec — 22 Dec1
1 adult
1 adult, Economy, 0 bags

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 15 November 2025.

Good round-trip deal

฿26,976 or less
Price to beat on a round-trip flight from Philadelphia.
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Find flights from Philadelphia

Enter your travel dates to find the best prices.

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 15 November 2025.

Tue 9/1218:54PHL - SEA
Nonstop6h 18mอลาสกาแอร์ไลน์
Sun 14/1221:35SEA - PHL
Nonstop5h 11mอลาสกาแอร์ไลน์
Deal found 13/11฿8,323
Sat 14/218:20PHL - SEA
1 stop9h 39mUnited Airlines
Sat 21/209:19SEA - PHL
1 stop9h 14mUnited Airlines
Deal found 14/11฿8,485
Thu 12/212:55PHL - SEA
1 stop9h 08mUnited Airlines
Tue 17/209:19SEA - PHL
1 stop9h 14mUnited Airlines
Deal found 13/11฿8,647
Wed 10/1212:45PHL - SEA
1 stop9h 37mUnited Airlines
Sat 13/1207:00SEA - PHL
1 stop7h 39mUnited Airlines
Deal found 13/11฿8,809
Thu 11/1206:18PHL - SEA
1 stop7h 36mเดลต้า
Sat 13/1211:50SEA - PHL
1 stop8h 20mเดลต้า
Deal found 13/11฿8,971
Wed 10/1217:07PHL - SEA
1 stop8h 21mUnited Airlines
Tue 16/1219:34SEA - PHL
2 stops11h 01mUnited Airlines
Deal found 12/11฿9,133
Tue 3/213:50PHL - SEA
2 stops11h 40mเซาท์เวสต์แอร์ไลน์
Tue 10/206:05SEA - PHL
2 stops11h 15mเซาท์เวสต์แอร์ไลน์
Deal found 14/11฿9,295
Tue 9/1218:54PHL - SEA
Nonstop6h 18mอลาสกาแอร์ไลน์
Fri 12/1221:35SEA - PHL
Nonstop5h 11mอลาสกาแอร์ไลน์
Deal found 15/11฿9,618
Sat 6/1212:45PHL - SEA
1 stop9h 37mUnited Airlines
Sun 14/1205:00SEA - PHL
1 stop7h 42mUnited Airlines
Deal found 14/11฿9,780
Mon 8/1210:15PHL - SEA
1 stop8h 52mUnited Airlines
Sat 20/1223:15SEA - PHL
1 stop7h 40mUnited Airlines
Deal found 14/11฿9,942
Thu 8/113:50PHL - SEA
2 stops11h 40mเซาท์เวสต์แอร์ไลน์
Sun 11/106:35SEA - PHL
1 stop11h 15mเซาท์เวสต์แอร์ไลน์
Deal found 13/11฿9,975
Mon 5/106:35PHL - SEA
1 stop8h 28mUnited Airlines
Mon 12/119:30SEA - PHL
2 stops11h 07mUnited Airlines
Deal found 13/11฿10,104

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 15 November 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

Tue 9/12

18:54-22:12

Nonstop6h 18m

Seattle/Tacoma Intl

Tue 16/12

09:44-17:53

Nonstop5h 09m

฿8,323

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Thu 11/12

18:54-22:12

Nonstop6h 18m

Seattle/Tacoma Intl

Sun 14/12

21:35-05:46

Nonstop5h 11m

฿8,323

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Fri 27/2

18:20-21:33

Nonstop6h 13m

Seattle/Tacoma Intl

Mon 2/3

09:16-17:20

Nonstop5h 04m

฿8,323

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Wed 10/12

12:45-19:22

1 stop9h 37m

Seattle/Tacoma Intl

Sat 13/12

07:00-17:39

1 stop7h 39m

฿8,809

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Wed 21/1

05:40-12:20

1 stop9h 40m

Seattle/Tacoma Intl

Mon 26/1

22:59-11:11

1 stop9h 12m

฿8,971

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Tue 17/2

07:00-14:44

1 stop10h 44m

Seattle/Tacoma Intl

Sat 21/2

06:00-16:38

1 stop7h 38m

฿8,971

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Tue 3/2

08:09-13:57

1 stop8h 48m

Seattle/Tacoma Intl

Tue 10/2

10:58-21:36

1 stop7h 38m

฿8,971

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Tue 9/12

06:00-10:40

1 stop7h 40m

Seattle/Tacoma Intl

Tue 16/12

05:25-17:40

1 stop9h 15m

฿8,971

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Wed 10/12

09:39-14:45

1 stop8h 06m

Seattle/Tacoma Intl

Mon 15/12

05:25-17:40

1 stop9h 15m

฿8,971

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Thu 8/1

06:00-10:38

1 stop7h 38m

Seattle/Tacoma Intl

Sun 11/1

13:30-23:15

1 stop6h 45m

฿8,971

Flights are sorted by cheapest return flights first.

Deals found on 13/11

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 7 November 2025.

Booking 42 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 ฿22,022). Flying from Philadelphia in June will prove the most costly (average of ฿29,956). 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 (449 flights per day), Orlando (322 flights per day) and Atlanta (297 flights per day).

Dublin
Dublin
From ฿23,311

What is the cheapest place to fly to from Philadelphia?

The cheapest city to fly to from Philadelphia is Dublin, with prices starting at ฿23,311. Explore other affordable destinations below.

Dublin
Dublin
From ฿23,311

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Direct flights from Pennsylvania

Book a direct flight from one of these other cities located in Pennsylvania.
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Direct flights from Rochester
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Direct flights from Fort Lauderdale
Direct flights from Cleveland
Direct flights from Nashville
Direct flights from Norfolk
Direct flights from Charleston
Direct flights from Kansas City
Direct flights from Indianapolis
Direct flights from San Antonio

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 15 November 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 ฿23,311 to Dublin (prices may vary depending on the airline and departure time). On average, users have booked flights for ฿26,976 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 ฿27,236

  • 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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