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฿5,284+ 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 28/5. 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
9 May — 16 May1
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 9 April 2026.

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Fri 29/5

07:10-10:00

Nonstop5h 50m

Seattle/Tacoma Intl

Fri 5/6

21:20-05:35

Nonstop5h 15m

฿10,536

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Thu 7/5

18:58-22:02

Nonstop6h 04m

Seattle/Tacoma Intl

Sun 10/5

21:44-06:02

Nonstop5h 18m

฿10,536

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Fri 8/5

07:10-10:00

Nonstop5h 50m

Seattle/Tacoma Intl

Sat 16/5

21:20-05:37

Nonstop5h 17m

฿10,536

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Sun 4/10

07:00-10:01

Nonstop6h 01m

Seattle/Tacoma Intl

Sat 10/10

21:15-05:27

Nonstop5h 12m

฿10,536

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Sun 13/9

07:05-10:04

Nonstop5h 59m

Seattle/Tacoma Intl

Thu 17/9

21:50-06:05

Nonstop5h 15m

฿10,536

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Sun 12/7

07:08-10:04

Nonstop5h 56m

Seattle/Tacoma Intl

Thu 16/7

21:30-05:53

Nonstop5h 23m

฿10,536

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Sun 12/7

07:08-10:04

Nonstop5h 56m

Seattle/Tacoma Intl

Wed 22/7

21:30-05:53

Nonstop5h 23m

฿10,536

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Wed 13/5

07:10-10:00

Nonstop5h 50m

Seattle/Tacoma Intl

Sat 16/5

21:20-05:37

Nonstop5h 17m

฿10,536

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Thu 3/9

07:05-10:04

Nonstop5h 59m

Seattle/Tacoma Intl

Fri 11/9

21:50-06:05

Nonstop5h 15m

฿10,536

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Sat 25/4

07:22-10:20

Nonstop5h 58m

Seattle/Tacoma Intl

Mon 4/5

21:44-06:02

Nonstop5h 18m

฿10,793

Flights are sorted by cheapest return flights first.

Deals found on 5/4

Showing 1-10 of 23 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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