Find flights
Deals

฿1,960+ 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 9/2. 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
22 Feb — 1 Mar1
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 23 January 2026.

Good round-trip deal

฿25,913 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 23 January 2026.

Thu 7/507:05
PHL
-
SEA
Nonstop5h 59m
เดลต้า
Sun 10/521:50
SEA
-
PHL
Nonstop5h 15m
เดลต้า
Deal found 23/1฿7,373
Sat 2/507:00
PHL
-
SEA
1 stop10h 46m
เดลต้า
Wed 13/521:50
SEA
-
PHL
Nonstop5h 15m
เดลต้า
Deal found 23/1฿7,684
Fri 13/212:55
PHL
-
SEA
1 stop9h 08m
United Airlines
Mon 23/209:19
SEA
-
PHL
1 stop9h 14m
United Airlines
Deal found 23/1฿7,871
Tue 17/218:50
PHL
-
SEA
1 stop8h 19m
เดลต้า
Sun 22/223:15
SEA
-
PHL
1 stop6h 35m
เดลต้า
Deal found 23/1฿7,995
Wed 18/210:35
PHL
-
SEA
2 stops11h 28m
United Airlines
Mon 23/207:00
SEA
-
PHL
1 stop7h 14m
United Airlines
Deal found 22/1฿8,151
Fri 15/507:05
PHL
-
SEA
Nonstop5h 59m
เดลต้า
Mon 25/519:35
SEA
-
PHL
1 stop7h 08m
เดลต้า
Deal found 22/1฿8,306
Wed 27/519:17
PHL
-
SEA
Nonstop6h 12m
อลาสกาแอร์ไลน์
Thu 4/621:27
SEA
-
PHL
Nonstop5h 13m
อลาสกาแอร์ไลน์
Deal found 23/1฿8,617
Wed 6/507:22
PHL
-
SEA
Nonstop5h 58m
อลาสกาแอร์ไลน์
Fri 15/520:30
SEA
-
PHL
1 stop16h 32m
อลาสกาแอร์ไลน์
Deal found 22/1฿8,711
Tue 24/318:05
PHL
-
SEA
1 stop8h 50m
เซาท์เวสต์แอร์ไลน์
Tue 31/309:50
SEA
-
PHL
2 stops11h 00m
เซาท์เวสต์แอร์ไลน์
Deal found 22/1฿8,773
Thu 2/406:00
PHL
-
SEA
1 stop7h 55m
เดลต้า
Mon 6/409:00
SEA
-
PHL
2 stops22h 55m
เดลต้า
Deal found 22/1฿8,866
Mon 23/217:00
PHL
-
SEA
1 stop8h 43m
United Airlines
Fri 27/207:00
SEA
-
PHL
1 stop7h 14m
United Airlines
Deal found 23/1฿8,897
Wed 27/507:05
PHL
-
SEA
Nonstop5h 59m
เดลต้า
Wed 27/521:20
SEA
-
PHL
1 stop9h 17m
เดลต้า
Deal found 23/1฿8,928

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 23 January 2026. 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 7/4

07:25-10:30

Nonstop6h 05m

Seattle/Tacoma Intl

Mon 13/4

21:55-06:05

Nonstop5h 10m

฿7,373

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Thu 5/3

18:50-00:09

1 stop8h 19m

Seattle/Tacoma Intl

Tue 10/3

06:00-16:33

1 stop7h 33m

฿7,995

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Wed 4/3

17:00-22:43

1 stop8h 43m

Seattle/Tacoma Intl

Mon 16/3

23:59-10:14

1 stop7h 15m

฿7,995

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Fri 6/3

18:49-00:09

1 stop8h 20m

Seattle/Tacoma Intl

Thu 12/3

05:30-17:28

1 stop8h 58m

฿7,995

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Tue 24/2

17:00-22:43

1 stop8h 43m

Seattle/Tacoma Intl

Thu 26/2

07:00-17:14

1 stop7h 14m

฿7,995

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Thu 12/3

18:49-00:01

1 stop8h 12m

Seattle/Tacoma Intl

Wed 18/3

19:35-05:41

1 stop7h 06m

฿7,995

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Wed 29/4

07:00-14:46

1 stop10h 46m

Seattle/Tacoma Intl

Sun 3/5

19:35-05:35

1 stop7h 00m

฿7,995

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Fri 13/3

07:00-14:52

1 stop10h 52m

Seattle/Tacoma Intl

Wed 18/3

19:35-05:41

1 stop7h 06m

฿7,995

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Fri 15/5

07:05-10:04

Nonstop5h 59m

Seattle/Tacoma Intl

Mon 25/5

21:50-06:05

Nonstop5h 15m

฿9,084

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Wed 27/5

07:05-10:04

Nonstop5h 59m

Seattle/Tacoma Intl

Thu 28/5

21:50-06:05

Nonstop5h 15m

฿9,239

Flights are sorted by cheapest return flights first.

Deals found on 22/1

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 16 January 2026.

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 ฿21,123). Flying from Philadelphia in May will prove the most costly (average of ฿23,985). 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 (495 flights per day), Atlanta (333 flights per day) and Orlando (294 flights per day).

Dublin
Dublin
From ฿22,393

What is the cheapest place to fly to from Philadelphia?

The cheapest city to fly to from Philadelphia is Dublin, with prices starting at ฿22,393. Explore other affordable destinations below.

Dublin
Dublin
From ฿22,393

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 Atlanta
Direct flights from Denver
Direct flights from Miami
Direct flights from Honolulu
Direct flights from Portland
Direct flights from Minneapolis
Direct flights from Austin
Direct flights from San Diego
Direct flights from Nashville
Direct flights from St. Louis
Direct flights from Rochester
Direct flights from Tampa
Direct flights from New Orleans
Direct flights from Cleveland
Direct flights from Charlotte
Direct flights from Kansas City
Direct flights from Fort Lauderdale
Direct flights from Charleston
Direct flights from Anchorage
Direct flights from Omaha
Direct flights from San Antonio
Direct flights from Norfolk

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 23 January 2026.

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

    The most selected flight destinations from Philadelphia for the current month are Atlanta, Cancún, 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 ฿22,393 to Dublin (prices may vary depending on the airline and departure time). On average, users have booked flights for ฿25,913 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 ฿22,896

  • 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.