Find flights
Deals

฿5,359+ 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 4/7. 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
31 May — 7 Jun1
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 1 May 2026.

Fly to

Route

Depart

Return

Price

Cheapest return flight

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Thu 28/5

07:10-10:00

Nonstop5h 50m

Seattle/Tacoma Intl

Thu 4/6

09:20-17:35

Nonstop5h 15m

฿10,685

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Sat 4/7

16:26-19:30

Nonstop6h 04m

Seattle/Tacoma Intl

Tue 14/7

22:02-06:13

Nonstop5h 11m

฿10,685

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Thu 13/8

07:05-10:04

Nonstop5h 59m

Seattle/Tacoma Intl

Thu 20/8

21:50-06:05

Nonstop5h 15m

฿10,685

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Mon 7/9

07:05-10:04

Nonstop5h 59m

Seattle/Tacoma Intl

Thu 10/9

21:50-06:05

Nonstop5h 15m

฿10,685
Fastest return journey

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Fri 5/6

18:45-21:35

Nonstop5h 50m

Seattle/Tacoma Intl

Sun 14/6

09:25-17:35

Nonstop5h 10m

฿10,685

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Mon 22/6

18:45-21:59

Nonstop6h 14m

Seattle/Tacoma Intl

Mon 29/6

09:25-17:35

Nonstop5h 10m

฿10,685

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Sat 4/7

18:45-21:59

Nonstop6h 14m

Seattle/Tacoma Intl

Tue 7/7

21:20-05:29

Nonstop5h 09m

฿10,685

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Mon 10/8

07:05-10:04

Nonstop5h 59m

Seattle/Tacoma Intl

Tue 18/8

21:50-06:05

Nonstop5h 15m

฿10,685

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Thu 28/5

07:10-10:00

Nonstop5h 50m

Seattle/Tacoma Intl

Mon 1/6

21:20-05:35

Nonstop5h 15m

฿10,685

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Mon 27/7

07:05-10:01

Nonstop5h 56m

Seattle/Tacoma Intl

Thu 6/8

21:30-05:53

Nonstop5h 23m

฿10,685

Flights are sorted by cheapest return flights first.

Deals found on 1/5

Showing 1-10 of 23 resultsSorted by cheapest first
1
2
3

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.

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.