Find flights
Deals
Thailand (ภาษาไทย)
ภาษาไทย

฿5,066+ 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 9/1. 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
8 Jan — 15 Jan1
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 9 December 2025.

Fri 6/219:06PHL - SEA
Nonstop6h 23mอลาสกาแอร์ไลน์
Tue 10/209:54SEA - PHL
Nonstop5h 09mอลาสกาแอร์ไลน์
Deal found 9/12฿8,189
Thu 5/219:06PHL - SEA
Nonstop6h 23mอลาสกาแอร์ไลน์
Sun 8/209:54SEA - PHL
Nonstop5h 09mอลาสกาแอร์ไลน์
Deal found 9/12฿8,826
Fri 6/318:20PHL - SEA
Nonstop6h 13mอลาสกาแอร์ไลน์
Wed 25/309:15SEA - PHL
Nonstop5h 13mอลาสกาแอร์ไลน์
Deal found 9/12฿9,463
Sun 25/119:06PHL - SEA
Nonstop6h 23mอลาสกาแอร์ไลน์
Thu 29/109:54SEA - PHL
Nonstop5h 09mอลาสกาแอร์ไลน์
Deal found 9/12฿10,100
Tue 5/507:00PHL - SEA
Nonstop5h 57mอลาสกาแอร์ไลน์
Fri 29/521:25SEA - PHL
Nonstop5h 15mอลาสกาแอร์ไลน์
Deal found 8/12฿11,375
Mon 12/118:50PHL - SEA
Nonstop6h 17mAmerican Airlines
Wed 14/106:12SEA - PHL
Nonstop5h 05mAmerican Airlines
Deal found 7/12฿11,566
Thu 7/518:35PHL - SEA
Nonstop6h 09mอลาสกาแอร์ไลน์
Sun 10/521:15SEA - PHL
Nonstop5h 08mอลาสกาแอร์ไลน์
Deal found 9/12฿12,012
Tue 31/318:35PHL - SEA
Nonstop6h 09mอลาสกาแอร์ไลน์
Fri 3/421:15SEA - PHL
Nonstop5h 08mอลาสกาแอร์ไลน์
Deal found 8/12฿12,649
Fri 13/318:22PHL - SEA
Nonstop6h 13mอลาสกาแอร์ไลน์
Thu 19/309:15SEA - PHL
Nonstop5h 13mอลาสกาแอร์ไลน์
Deal found 9/12฿12,968
Sat 28/307:00PHL - SEA
Nonstop5h 57mอลาสกาแอร์ไลน์
Thu 2/409:15SEA - PHL
Nonstop5h 13mอลาสกาแอร์ไลน์
Deal found 8/12฿13,127
Sun 29/307:00PHL - SEA
Nonstop5h 57mอลาสกาแอร์ไลน์
Thu 2/409:15SEA - PHL
Nonstop5h 13mอลาสกาแอร์ไลน์
Deal found 7/12฿13,287
Fri 5/618:59PHL - SEA
Nonstop5h 59mอลาสกาแอร์ไลน์
Sun 14/621:15SEA - PHL
Nonstop5h 12mอลาสกาแอร์ไลน์
Deal found 9/12฿13,765

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 December 2025.

Fly to

Suvarnabhumi

Route

Depart

Return

Price

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Thu 12/3

18:22-21:35

Nonstop6h 13m

Seattle/Tacoma Intl

Wed 18/3

09:15-17:31

Nonstop5h 16m

฿8,189

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Sat 28/2

18:20-21:33

Nonstop6h 13m

Seattle/Tacoma Intl

Sun 8/3

09:18-17:22

Nonstop5h 04m

฿8,189

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Tue 17/2

18:20-21:33

Nonstop6h 13m

Seattle/Tacoma Intl

Sun 22/2

09:16-17:20

Nonstop5h 04m

฿8,189

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Fri 6/2

19:06-22:29

Nonstop6h 23m

Seattle/Tacoma Intl

Sun 8/2

09:54-18:03

Nonstop5h 09m

฿8,826

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Thu 5/2

19:06-22:29

Nonstop6h 23m

Seattle/Tacoma Intl

Mon 9/2

09:54-18:03

Nonstop5h 09m

฿8,826

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Sat 14/3

18:22-21:35

Nonstop6h 13m

Seattle/Tacoma Intl

Fri 20/3

21:15-05:23

Nonstop5h 08m

฿9,463

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Fri 6/3

18:20-21:33

Nonstop6h 13m

Seattle/Tacoma Intl

Wed 25/3

09:15-17:28

Nonstop5h 13m

฿9,463

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Fri 6/3

18:20-21:33

Nonstop6h 13m

Seattle/Tacoma Intl

Thu 26/3

21:15-05:23

Nonstop5h 08m

฿9,463

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Fri 6/3

18:20-21:33

Nonstop6h 13m

Seattle/Tacoma Intl

Fri 27/3

09:15-17:28

Nonstop5h 13m

฿9,463

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Tue 14/4

07:00-09:57

Nonstop5h 57m

Seattle/Tacoma Intl

Sat 18/4

21:15-05:23

Nonstop5h 08m

฿11,375

Flights are sorted by cheapest return flights first.

Deals found on 6/12

Showing 1-10 of 20 results
1
2

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.

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Direct flights from Pennsylvania cities

Book a direc flight from one of these other cities located in Pennsylvania.
Direct flights from Philadelphia
Direct flights from Los Angeles
Direct flights from San Francisco
Direct flights from Boston
Direct flights from Orlando
Direct flights from Las Vegas
Direct flights from Seattle
Direct flights from Salt Lake City
Direct flights from Portland
Direct flights from Minneapolis
Direct flights from Miami
Direct flights from Honolulu
Direct flights from Atlanta
Direct flights from Denver
Direct flights from Austin
Direct flights from San Diego
Direct flights from Charlotte
Direct flights from Nashville
Direct flights from St. Louis
Direct flights from New Orleans
Direct flights from Rochester
Direct flights from Tampa
Direct flights from Cleveland
Direct flights from Fort Lauderdale
Direct flights from Anchorage
Direct flights from Charleston
Direct flights from Kansas City
Direct flights from Oklahoma City
Direct flights from Bozeman
Direct flights from San Antonio

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.