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฿1,987+ 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 20/1. 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
23 Jan — 30 Jan1
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 24 December 2025.

Good round-trip deal

฿25,861 or less
Price to beat on a round-trip flight from Philadelphia.
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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 24 December 2025.

Sat 17/106:30PHL - SEA
1 stop8h 02mUnited Airlines
Tue 20/109:25SEA - PHL
1 stop9h 27mUnited Airlines
Deal found 22/12฿7,917
Tue 20/106:30PHL - SEA
1 stop8h 02mUnited Airlines
Thu 22/112:25SEA - PHL
1 stop8h 07mUnited Airlines
Deal found 22/12฿7,948
Fri 6/218:37PHL - SEA
1 stop8h 32mเดลต้า
Mon 9/213:38SEA - PHL
1 stop7h 15mเดลต้า
Deal found 22/12฿7,979
Tue 13/110:30PHL - SEA
2 stops10h 56mUnited Airlines
Wed 14/112:25SEA - PHL
1 stop8h 05mUnited Airlines
Deal found 22/12฿8,134
Sat 17/110:30PHL - SEA
2 stops10h 56mUnited Airlines
Wed 21/108:40SEA - PHL
2 stops9h 56mUnited Airlines
Deal found 22/12฿8,258
Tue 17/207:00PHL - SEA
1 stop10h 44mเดลต้า
Fri 20/206:00SEA - PHL
1 stop7h 32mเดลต้า
Deal found 24/12฿8,289
Fri 30/106:30PHL - SEA
1 stop8h 02mUnited Airlines
Tue 3/208:40SEA - PHL
2 stops9h 56mUnited Airlines
Deal found 23/12฿8,445
Fri 22/519:17PHL - SEA
Nonstop6h 12mอลาสกาแอร์ไลน์
Mon 25/509:59SEA - PHL
Nonstop5h 17mอลาสกาแอร์ไลน์
Deal found 22/12฿8,600
Sun 18/108:35PHL - SEA
1 stop10h 09mUnited Airlines
Sun 25/109:25SEA - PHL
1 stop9h 27mUnited Airlines
Deal found 21/12฿8,693
Thu 22/110:10PHL - SEA
2 stops11h 17mUnited Airlines
Thu 29/107:00SEA - PHL
1 stop7h 34mUnited Airlines
Deal found 23/12฿8,755
Mon 26/113:10PHL - BKK
2 stops29h 20mANA
Tue 17/222:25BKK - PHL
2 stops27h 45mANA
Deal found 23/12฿22,633
Tue 20/106:30PHL - BKK
3 stops40h 55mUnited Airlines
Tue 27/116:55BKK - PHL
3 stops30h 40mUnited Airlines
Deal found 23/12฿23,192

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 24 December 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

Wed 18/2

12:55-19:03

1 stop9h 08m

Seattle/Tacoma Intl

Wed 29/4

23:59-12:17

1 stop9h 18m

฿7,948

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Tue 27/1

14:30-23:15

1 stop11h 45m

Seattle/Tacoma Intl

Tue 3/2

13:38-23:53

1 stop7h 15m

฿7,979

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Mon 13/4

18:47-21:52

Nonstop6h 05m

Seattle/Tacoma Intl

Fri 24/4

21:44-06:02

Nonstop5h 18m

฿7,979

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Fri 6/2

14:30-23:15

1 stop11h 45m

Seattle/Tacoma Intl

Tue 10/2

06:05-16:30

1 stop7h 25m

฿7,979

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Fri 23/1

15:43-21:15

1 stop8h 32m

Seattle/Tacoma Intl

Fri 30/1

07:00-17:34

1 stop7h 34m

฿7,979

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Sat 17/1

10:30-18:26

2 stops10h 56m

Seattle/Tacoma Intl

Wed 21/1

09:25-21:52

1 stop9h 27m

฿8,103

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Thu 26/2

18:45-00:10

1 stop8h 25m

Seattle/Tacoma Intl

Tue 3/3

06:05-20:20

2 stops11h 15m

฿8,134

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Wed 4/2

10:40-18:14

2 stops10h 34m

Seattle/Tacoma Intl

Wed 11/2

10:58-21:36

1 stop7h 38m

฿8,134

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Mon 2/3

10:35-19:03

2 stops11h 28m

Seattle/Tacoma Intl

Tue 10/3

23:59-10:13

1 stop7h 14m

฿8,134

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Sat 17/1

05:50-11:00

1 stop8h 10m

Seattle/Tacoma Intl

Wed 21/1

09:55-22:00

1 stop9h 05m

฿8,258

Flights are sorted by cheapest return flights first.

Deals found on 21/12

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 19 December 2025.

Booking 59 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, January is the cheapest month in which you can book a flight from Philadelphia (average of ฿21,080). Flying from Philadelphia in May will prove the most costly (average of ฿23,937). 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 (414 flights per day), Orlando (390 flights per day) and Atlanta (291 flights per day).

San Francisco
San Francisco
From ฿29,684
Dublin
Dublin
From ฿22,348

What is the cheapest place to fly to from Philadelphia?

The cheapest city to fly to from Philadelphia is Dublin, with prices starting at ฿22,348. Explore other affordable destinations below.

Dublin
Dublin
From ฿22,348
San Francisco
San Francisco
From ฿29,684

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Direct flights from Pennsylvania

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Direct flights from Anchorage
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Direct flights from Charleston
Direct flights from Bozeman
Direct flights from Norfolk
Direct flights from Oklahoma City

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 24 December 2025.

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

    The most selected flight destinations from Philadelphia for the current month are Cancún, Atlanta, Boston. While Atlanta, Cancún, Boston 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 ฿22,348 to Dublin (prices may vary depending on the airline and departure time). On average, users have booked flights for ฿28,128 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 January; with May 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 ฿23,192

  • 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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