Find flights
Deals
Thailand (ภาษาไทย)
ภาษาไทย

฿2,209+ 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 25/1. 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
2 Jan — 9 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 3 December 2025.

Good round-trip deal

฿26,663 or less
Price to beat on a round-trip flight from Philadelphia.
Search Deals

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 3 December 2025.

Sun 25/118:37PHL - SEA
1 stop8h 32mเดลต้า
Sun 1/223:10SEA - PHL
1 stop6h 40mเดลต้า
Deal found 1/12฿8,226
Thu 8/108:35PHL - SEA
1 stop10h 09mUnited Airlines
Sat 10/105:00SEA - PHL
2 stops9h 34mUnited Airlines
Deal found 2/12฿8,387
Sat 10/110:30PHL - SEA
2 stops10h 56mUnited Airlines
Sat 17/105:00SEA - PHL
2 stops9h 34mUnited Airlines
Deal found 1/12฿8,547
Thu 19/213:15PHL - SEA
2 stops12h 35mเซาท์เวสต์แอร์ไลน์
Mon 23/209:30SEA - PHL
2 stops9h 45mเซาท์เวสต์แอร์ไลน์
Deal found 2/12฿8,643
Mon 23/205:50PHL - SEA
1 stop8h 00mเซาท์เวสต์แอร์ไลน์
Fri 27/205:15SEA - PHL
2 stops10h 50mเซาท์เวสต์แอร์ไลน์
Deal found 1/12฿8,675
Fri 9/105:40PHL - SEA
1 stop10h 35mเซาท์เวสต์แอร์ไลน์
Mon 12/106:05SEA - PHL
2 stops11h 15mเซาท์เวสต์แอร์ไลน์
Deal found 2/12฿8,771
Sun 25/119:06PHL - SEA
Nonstop6h 23mอลาสกาแอร์ไลน์
Mon 2/209:54SEA - PHL
Nonstop5h 09mอลาสกาแอร์ไลน์
Deal found 1/12฿8,867
Thu 15/110:10PHL - SEA
1 stop8h 51mUnited Airlines
Mon 19/109:25SEA - PHL
1 stop9h 27mUnited Airlines
Deal found 1/12฿8,931
Thu 8/117:00PHL - SEA
1 stop8h 30mเซาท์เวสต์แอร์ไลน์
Sun 11/106:35SEA - PHL
1 stop7h 00mเซาท์เวสต์แอร์ไลน์
Deal found 1/12฿8,963
Tue 13/105:40PHL - SEA
2 stops13h 20mเซาท์เวสต์แอร์ไลน์
Fri 16/106:35SEA - PHL
1 stop7h 00mเซาท์เวสต์แอร์ไลน์
Deal found 2/12฿9,027
Wed 21/113:50PHL - SEA
2 stops11h 40mเซาท์เวสต์แอร์ไลน์
Sun 25/109:50SEA - PHL
2 stops9h 35mเซาท์เวสต์แอร์ไลน์
Deal found 1/12฿9,155
Wed 4/209:00PHL - BKK
2 stops62h 25mUnited Airlines
Wed 11/316:55BKK - PHL
3 stops28h 19mUnited Airlines
Deal found 3/12฿26,184

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 3 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

Tue 17/2

17:17-22:05

1 stop7h 48m

Seattle/Tacoma Intl

Sat 21/2

23:05-09:27

1 stop7h 22m

฿8,226

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Tue 27/1

05:40-12:20

1 stop9h 40m

Seattle/Tacoma Intl

Tue 3/2

05:30-17:25

1 stop8h 55m

฿8,226

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Sat 28/2

06:00-10:55

1 stop7h 55m

Seattle/Tacoma Intl

Sat 7/3

06:00-16:37

1 stop7h 37m

฿8,226

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Thu 8/1

17:17-21:49

1 stop7h 32m

Seattle/Tacoma Intl

Sun 11/1

23:10-08:50

1 stop6h 40m

฿8,226

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Mon 26/1

18:37-00:09

1 stop8h 32m

Seattle/Tacoma Intl

Tue 3/2

23:10-08:50

1 stop6h 40m

฿8,226

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Fri 9/1

05:40-13:15

1 stop10h 35m

Seattle/Tacoma Intl

Mon 12/1

06:05-20:20

2 stops11h 15m

฿8,771

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Thu 8/1

10:30-18:26

2 stops10h 56m

Seattle/Tacoma Intl

Sun 11/1

05:00-15:50

1 stop7h 50m

฿9,123

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Thu 8/1

05:40-16:00

2 stops13h 20m

Seattle/Tacoma Intl

Sun 11/1

06:35-16:35

1 stop7h 00m

฿9,123

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Fri 9/1

10:30-18:27

2 stops10h 57m

Seattle/Tacoma Intl

Sun 11/1

05:00-15:50

1 stop7h 50m

฿9,123

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Mon 9/3

15:45-21:54

1 stop9h 09m

Seattle/Tacoma Intl

Thu 12/3

23:59-10:40

1 stop7h 41m

฿9,507

Flights are sorted by cheapest return flights first.

Deals found on 30/11

Showing 1-10 of 60 results
1
2
3
...
6

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 28 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 ฿21,767). Flying from Philadelphia in May will prove the most costly (average of ฿24,776). 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 (301 flights per day), Orlando (210 flights per day) and Atlanta (181 flights per day).

Dublin
Dublin
From ฿23,041

What is the cheapest place to fly to from Philadelphia?

The cheapest city to fly to from Philadelphia is Dublin, with prices starting at ฿23,041. Explore other affordable destinations below.

Dublin
Dublin
From ฿23,041

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Direct flights from Pennsylvania

Book a direct flight from one of these other cities located in Pennsylvania.
Direct flights from Philadelphia
Direct flights from Los Angeles
Direct flights from San Francisco
Direct flights from Boston
Direct flights from Las Vegas
Direct flights from Orlando
Direct flights from Seattle
Direct flights from Salt Lake City
Direct flights from Portland
Direct flights from Minneapolis
Direct flights from Miami
Direct flights from Denver
Direct flights from Honolulu
Direct flights from Atlanta
Direct flights from Austin
Direct flights from San Diego
Direct flights from Charlotte
Direct flights from St. Louis
Direct flights from New Orleans
Direct flights from Nashville
Direct flights from Tampa
Direct flights from Rochester
Direct flights from Fort Lauderdale
Direct flights from Cleveland
Direct flights from Anchorage
Direct flights from Charleston
Direct flights from Kansas City
Direct flights from Oklahoma City
Direct flights from Bozeman
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 3 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 Atlanta, Boston, Charlotte. 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 ฿23,041 to Dublin (prices may vary depending on the airline and departure time). On average, users have booked flights for ฿26,663 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 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 ฿23,879

  • 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.

See more FAQs

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.