Find flights
Deals

฿2,559+ 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 8/4. 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
9 abr. — 16 abr.1
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 10 marzo 2026.

Good round-trip deal

฿26,641 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 10 marzo 2026.

vie. 15/507:10
PHL
-
SEA
Nonstop5h 50m
เดลต้า
lun. 18/521:20
SEA
-
PHL
Nonstop5h 17m
เดลต้า
Deal found 9/3฿9,243
mar. 18/807:05
PHL
-
SEA
Nonstop5h 59m
เดลต้า
mar. 15/1221:50
SEA
-
PHL
Nonstop5h 13m
เดลต้า
Deal found 8/3฿9,275
lun. 6/418:47
PHL
-
SEA
Nonstop6h 05m
อลาสกาแอร์ไลน์
mar. 21/421:55
SEA
-
PHL
Nonstop5h 10m
อลาสกาแอร์ไลน์
Deal found 9/3฿9,499
mié. 6/514:59
PHL
-
SEA
1 stop8h 43m
เดลต้า
vie. 15/521:20
SEA
-
PHL
Nonstop5h 17m
เดลต้า
Deal found 9/3฿9,563
mar. 18/807:05
PHL
-
SEA
Nonstop5h 59m
เดลต้า
vie. 18/1219:35
SEA
-
PHL
1 stop7h 06m
เดลต้า
Deal found 8/3฿9,595
jue. 2/418:54
PHL
-
SEA
1 stop7h 46m
เดลต้า
lun. 8/621:50
SEA
-
PHL
Nonstop5h 15m
เดลต้า
Deal found 6/3฿9,691
jue. 9/418:00
PHL
-
SEA
1 stop9h 05m
เซาท์เวสต์แอร์ไลน์
mié. 15/413:25
SEA
-
PHL
1 stop7h 30m
เซาท์เวสต์แอร์ไลน์
Deal found 9/3฿9,883
dom. 16/818:40
PHL
-
SEA
1 stop8h 21m
เดลต้า
vie. 18/1219:35
SEA
-
PHL
1 stop7h 06m
เดลต้า
Deal found 8/3฿9,915
jue. 2/418:55
PHL
-
SEA
1 stop8h 39m
United Airlines
jue. 9/423:59
SEA
-
PHL
1 stop9h 20m
United Airlines
Deal found 5/3฿9,947
vie. 3/419:05
PHL
-
SEA
1 stop8h 25m
เซาท์เวสต์แอร์ไลน์
mar. 7/423:45
SEA
-
PHL
1 stop8h 05m
เซาท์เวสต์แอร์ไลน์
Deal found 8/3฿10,011
mar. 31/318:49
PHL
-
SEA
1 stop8h 14m
เดลต้า
mié. 1/405:30
SEA
-
PHL
1 stop9h 08m
เดลต้า
Deal found 8/3฿10,139
mar. 1/920:30
PHL
-
BKK
1 stop29h 55m
Qatar Airways
jue. 10/909:15
BKK
-
PHL
1 stop34h 45m
Qatar Airways
Deal found 5/3฿27,665

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 10 marzo 2026. In the last 7 days, Cheapflights users made a total of 17,341 searches

Fly to

Route

Depart

Return

Price

Cheapest return flight

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

vie. 8/5

07:10-10:00

Nonstop5h 50m

Seattle/Tacoma Intl

jue. 14/5

21:20-05:37

Nonstop5h 17m

฿9,243

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

mar. 1/9

07:05-10:04

Nonstop5h 59m

Seattle/Tacoma Intl

mar. 8/9

21:50-06:05

Nonstop5h 15m

฿9,243

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

sáb. 9/5

07:10-10:00

Nonstop5h 50m

Seattle/Tacoma Intl

dom. 17/5

21:20-05:37

Nonstop5h 17m

฿9,243

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

jue. 27/8

07:05-10:04

Nonstop5h 59m

Seattle/Tacoma Intl

lun. 31/8

21:50-06:05

Nonstop5h 15m

฿9,243

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

jue. 14/5

19:01-23:44

1 stop7h 43m

Seattle/Tacoma Intl

lun. 15/6

21:50-06:05

Nonstop5h 15m

฿9,563

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

lun. 31/8

18:40-00:01

1 stop8h 21m

Seattle/Tacoma Intl

mar. 8/9

21:50-06:05

Nonstop5h 15m

฿9,563

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

vie. 29/5

18:45-00:12

1 stop8h 27m

Seattle/Tacoma Intl

mar. 2/6

23:05-11:50

1 stop9h 45m

฿9,883

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

vie. 3/4

19:05-00:30

1 stop8h 25m

Seattle/Tacoma Intl

mar. 7/4

23:45-10:50

1 stop8h 05m

฿10,011

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

jue. 13/8

05:55-13:55

1 stop11h 00m

Seattle/Tacoma Intl

mié. 26/8

23:05-13:15

2 stops11h 10m

฿10,043

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

jue. 28/5

16:30-00:55

2 stops11h 25m

Seattle/Tacoma Intl

lun. 1/6

21:00-10:50

2 stops10h 50m

฿10,203

Flights are sorted by cheapest return flights first.

Deals found on 5/3

Showing 1-10 of 60 resultsSorted by cheapest first
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 6 March 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, April is the cheapest month in which you can book a flight from Philadelphia (average of ฿20,117). Flying from Philadelphia in May will prove the most costly (average of ฿24,339). 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 (471 flights per day), Detroit (310 flights per day) and Atlanta (298 flights per day).

Dublin
Dublin
From ฿23,022

What is the cheapest place to fly to from Philadelphia?

The cheapest city to fly to from Philadelphia is Dublin, with prices starting at ฿23,022. Explore other affordable destinations below.

Dublin
Dublin
From ฿23,022

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.

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 10 marzo 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 ฿23,022 to Dublin (prices may vary depending on the airline and departure time). On average, users have booked flights for ฿26,641 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 April; 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 ฿27,569

  • 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.