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฿4,688+ 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 30/5. 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
30 Jan — 6 Feb1
1 adult
1 adult, Economy, 0 bags

Direct 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 31 December 2025.

Sat 16/519:17PHL - SEA
Nonstop6h 12mอลาสกาแอร์ไลน์
Sat 23/521:27SEA - PHL
Nonstop5h 13mอลาสกาแอร์ไลน์
Deal found 30/12฿8,086
Sat 17/119:06PHL - SEA
Nonstop6h 23mอลาสกาแอร์ไลน์
Wed 21/109:54SEA - PHL
Nonstop5h 09mอลาสกาแอร์ไลน์
Deal found 29/12฿8,684
Sat 23/519:17PHL - SEA
Nonstop6h 12mอลาสกาแอร์ไลน์
Sun 31/521:27SEA - PHL
Nonstop5h 13mอลาสกาแอร์ไลน์
Deal found 31/12฿8,716
Mon 18/519:17PHL - SEA
Nonstop6h 12mอลาสกาแอร์ไลน์
Wed 20/521:27SEA - PHL
Nonstop5h 13mอลาสกาแอร์ไลน์
Deal found 30/12฿9,345
Sat 28/218:20PHL - SEA
Nonstop6h 13mอลาสกาแอร์ไลน์
Sun 8/309:18SEA - PHL
Nonstop5h 04mอลาสกาแอร์ไลน์
Deal found 31/12฿9,660
Sat 17/119:06PHL - SEA
Nonstop6h 23mอลาสกาแอร์ไลน์
Sun 18/109:54SEA - PHL
Nonstop5h 09mอลาสกาแอร์ไลน์
Deal found 31/12฿9,943
Mon 1/607:00PHL - SEA
Nonstop5h 59mอลาสกาแอร์ไลน์
Sun 7/621:27SEA - PHL
Nonstop5h 13mอลาสกาแอร์ไลน์
Deal found 31/12฿9,974
Sun 18/118:50PHL - SEA
Nonstop6h 17mAmerican Airlines
Sat 31/106:12SEA - PHL
Nonstop5h 05mAmerican Airlines
Deal found 29/12฿10,194
Sun 17/519:17PHL - SEA
Nonstop6h 12mอลาสกาแอร์ไลน์
Sat 23/521:27SEA - PHL
Nonstop5h 13mอลาสกาแอร์ไลน์
Deal found 30/12฿10,289
Sat 6/607:00PHL - SEA
Nonstop5h 59mอลาสกาแอร์ไลน์
Mon 15/621:36SEA - PHL
Nonstop5h 14mอลาสกาแอร์ไลน์
Deal found 30/12฿10,604
Sat 17/119:06PHL - SEA
Nonstop6h 23mอลาสกาแอร์ไลน์
Tue 20/109:54SEA - PHL
Nonstop5h 09mอลาสกาแอร์ไลน์
Deal found 31/12฿10,887
Sat 28/307:25PHL - SEA
Nonstop6h 05mอลาสกาแอร์ไลน์
Sun 5/421:55SEA - PHL
Nonstop5h 10mอลาสกาแอร์ไลน์
Deal found 30/12฿10,918

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 31 December 2025.

Fly to

Suvarnabhumi

Route

Depart

Return

Price

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Wed 13/5

19:17-22:29

Nonstop6h 12m

Seattle/Tacoma Intl

Wed 27/5

21:27-05:40

Nonstop5h 13m

฿8,086

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Thu 7/5

07:05-10:04

Nonstop5h 59m

Seattle/Tacoma Intl

Sun 10/5

21:50-06:05

Nonstop5h 15m

฿8,086

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Thu 12/3

18:22-21:35

Nonstop6h 13m

Seattle/Tacoma Intl

Wed 18/3

09:37-17:47

Nonstop5h 10m

฿8,086

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Thu 14/5

07:00-09:59

Nonstop5h 59m

Seattle/Tacoma Intl

Fri 22/5

21:27-05:40

Nonstop5h 13m

฿8,086

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Thu 7/5

07:22-10:20

Nonstop5h 58m

Seattle/Tacoma Intl

Sun 10/5

21:44-06:02

Nonstop5h 18m

฿8,086

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Fri 1/5

18:58-22:02

Nonstop6h 04m

Seattle/Tacoma Intl

Tue 5/5

09:32-17:58

Nonstop5h 26m

฿8,086

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Fri 6/3

18:20-21:33

Nonstop6h 13m

Seattle/Tacoma Intl

Thu 26/3

09:37-17:47

Nonstop5h 10m

฿8,086

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Sat 16/5

19:17-22:29

Nonstop6h 12m

Seattle/Tacoma Intl

Sat 23/5

21:27-05:40

Nonstop5h 13m

฿8,086

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Sat 17/1

19:06-22:29

Nonstop6h 23m

Seattle/Tacoma Intl

Wed 21/1

09:54-18:03

Nonstop5h 09m

฿8,684

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Sun 24/5

07:05-10:04

Nonstop5h 59m

Seattle/Tacoma Intl

Fri 5/6

21:50-06:05

Nonstop5h 15m

฿8,716

Flights are sorted by cheapest return flights first.

Deals found on 29/12

Showing 1-10 of 19 results
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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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