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฿5,523+ Direct 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 7/10. 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
14 Aug — 21 Aug1
1 adult
1 adult, Economy, 0 bags

Find direct flights from Philadelphia within your budget

 
Use the slider to find direct flights from Philadelphia within your budget. Price data is based on user searches made on Cheapflights. Over the past seven days, Cheapflights users made 17,341 searches. This data was last updated on 15 July 2026.

Fly to

Route

Depart

Return

Price

Cheapest return flight

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Tue 18/8

07:05-10:01

Nonstop5h 56m

Seattle/Tacoma Intl

Mon 31/8

21:30-05:50

Nonstop5h 20m

฿11,012
Fastest return journey

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Sat 12/9

07:00-09:51

Nonstop5h 51m

Seattle/Tacoma Intl

Wed 16/9

21:27-05:40

Nonstop5h 13m

฿11,012

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Wed 30/9

07:05-09:56

Nonstop5h 51m

Seattle/Tacoma Intl

Sat 10/10

21:31-05:45

Nonstop5h 14m

฿11,012

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Fri 21/8

07:02-09:53

Nonstop5h 51m

Seattle/Tacoma Intl

Thu 27/8

21:27-05:40

Nonstop5h 13m

฿11,012

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Thu 27/8

07:05-10:01

Nonstop5h 56m

Seattle/Tacoma Intl

Tue 1/9

21:30-05:50

Nonstop5h 20m

฿11,012

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Tue 1/9

18:59-21:51

Nonstop5h 52m

Seattle/Tacoma Intl

Tue 8/9

21:27-05:40

Nonstop5h 13m

฿11,012

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Wed 4/11

17:49-20:59

Nonstop6h 10m

Seattle/Tacoma Intl

Sat 14/11

21:25-05:33

Nonstop5h 08m

฿11,012

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Thu 20/8

18:59-21:51

Nonstop5h 52m

Seattle/Tacoma Intl

Mon 24/8

21:27-05:40

Nonstop5h 13m

฿11,916

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Thu 13/8

07:33-10:32

Nonstop5h 59m

Seattle/Tacoma Intl

Mon 31/8

21:27-05:40

Nonstop5h 13m

฿12,150

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Sat 22/8

07:02-09:53

Nonstop5h 51m

Seattle/Tacoma Intl

Mon 24/8

21:27-05:40

Nonstop5h 13m

฿12,786

Flights are sorted by cheapest return flights first.

Deals found on 12/7

Showing 1-10 of 21 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.

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