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฿5,385+ Cheap flights from Philadelphia

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 22/6. 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
19 Jun — 26 Jun1
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 20 May 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

Mon 17/8

07:00-09:56

Nonstop5h 56m

Seattle/Tacoma Intl

Thu 20/8

21:29-05:40

Nonstop5h 11m

฿10,738

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Sat 10/10

07:05-10:24

Nonstop6h 19m

Seattle/Tacoma Intl

Wed 14/10

21:50-06:03

Nonstop5h 13m

฿10,738

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Sun 20/9

07:05-10:04

Nonstop5h 59m

Seattle/Tacoma Intl

Sun 27/9

21:50-06:05

Nonstop5h 15m

฿10,738

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Mon 20/7

07:05-10:01

Nonstop5h 56m

Seattle/Tacoma Intl

Thu 23/7

19:50-06:15

1 stop7h 25m

฿11,064

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Thu 23/7

17:28-22:33

1 stop8h 05m

Seattle/Tacoma Intl

Mon 27/7

21:20-05:29

Nonstop5h 09m

฿11,064

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Sun 16/8

07:00-09:56

Nonstop5h 56m

Seattle/Tacoma Intl

Mon 24/8

06:00-18:42

1 stop9h 42m

฿11,064

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Mon 20/7

17:28-22:33

1 stop8h 05m

Seattle/Tacoma Intl

Mon 27/7

19:50-06:15

1 stop7h 25m

฿11,390

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Wed 2/9

18:40-00:01

1 stop8h 21m

Seattle/Tacoma Intl

Wed 9/9

13:45-23:40

1 stop6h 55m

฿11,390

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Thu 13/8

19:00-23:59

1 stop7h 59m

Seattle/Tacoma Intl

Thu 20/8

07:16-18:42

1 stop8h 26m

฿11,390
Fastest return journey

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Wed 8/7

07:05-10:01

Nonstop5h 56m

Seattle/Tacoma Intl

Sun 12/7

21:20-05:29

Nonstop5h 09m

฿11,847

Flights are sorted by cheapest return flights first.

Deals found on 19/5

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.

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 ฿28,688). Flying from Philadelphia in June will prove the most costly (average of ฿47,944). 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 (290 flights per day), Detroit (272 flights per day) and Atlanta (271 flights per day).

Dublin
Dublin
From ฿23,493

What is the cheapest place to fly to from Philadelphia?

The cheapest city to fly to from Philadelphia is Dublin, with prices starting at ฿23,493. Explore other affordable destinations below.

Dublin
Dublin
From ฿23,493

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.

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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 20 May 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, Boston, Chicago. 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 ฿23,493 to Dublin (prices may vary depending on the airline and departure time). On average, users have booked flights for ฿27,186 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.

  • 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.

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