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฿2,818+ 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 14/5. 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
24 May — 31 May1
1 adult
1 adult, Economy, 0 bags

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

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Sun 7/6

07:00-09:59

Nonstop5h 59m

Seattle/Tacoma Intl

Tue 16/6

21:31-05:45

Nonstop5h 14m

฿10,657

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Mon 22/6

07:00-09:59

Nonstop5h 59m

Seattle/Tacoma Intl

Fri 26/6

17:59-06:08

1 stop9h 09m

฿10,981

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Sun 4/10

07:05-10:04

Nonstop5h 59m

Seattle/Tacoma Intl

Sat 10/10

23:53-10:40

1 stop7h 47m

฿10,981

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Wed 13/5

07:10-10:00

Nonstop5h 50m

Seattle/Tacoma Intl

Sat 23/5

05:30-16:30

1 stop8h 00m

฿11,111

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Tue 12/5

05:45-10:55

1 stop8h 10m

Seattle/Tacoma Intl

Fri 22/5

21:20-05:37

Nonstop5h 17m

฿11,111

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Fri 19/6

19:03-23:59

1 stop7h 56m

Seattle/Tacoma Intl

Mon 22/6

05:30-16:36

1 stop8h 06m

฿11,305

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Tue 2/6

05:50-13:35

2 stops10h 45m

Seattle/Tacoma Intl

Fri 5/6

23:05-11:00

1 stop8h 55m

฿11,467

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Wed 22/7

16:35-00:40

2 stops11h 05m

Seattle/Tacoma Intl

Wed 29/7

05:00-17:00

2 stops9h 00m

฿11,629

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Mon 27/7

07:08-10:04

Nonstop5h 56m

Seattle/Tacoma Intl

Sat 1/8

21:30-05:53

Nonstop5h 23m

฿11,759

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Sun 23/8

07:20-18:00

2 stops13h 40m

Seattle/Tacoma Intl

Tue 1/9

23:05-11:35

1 stop9h 30m

฿11,791

Flights are sorted by cheapest return flights first.

Deals found on 23/4

Showing 1-10 of 60 resultsSorted by cheapest first
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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?

Booking 58 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, February is the cheapest month in which you can book a flight from Philadelphia (average of ฿28,473). Flying from Philadelphia in June will prove the most costly (average of ฿49,302). 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 (558 flights per day), Detroit (340 flights per day) and Atlanta (323 flights per day).

Dublin
Dublin
From ฿23,317

What is the cheapest place to fly to from Philadelphia?

The cheapest city to fly to from Philadelphia is Dublin, with prices starting at ฿23,317. Explore other affordable destinations below.

Dublin
Dublin
From ฿23,317

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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 April 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 ฿23,317 to Dublin (prices may vary depending on the airline and departure time). On average, users have booked flights for ฿26,982 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 February; 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 ฿31,389

  • 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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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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