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 21 November 2025.

Sat 28/218:20PHL - SEA

Nonstop6h 13mอลาสกาแอร์ไลน์

Sat 7/309:16SEA - PHL

Nonstop5h 04mอลาสกาแอร์ไลน์

Deal found 21/11฿8,335

Wed 17/1218:54PHL - SEA

Nonstop6h 18mอลาสกาแอร์ไลน์

Wed 24/1221:29SEA - PHL

Nonstop5h 08mอลาสกาแอร์ไลน์

Deal found 19/11฿8,822

Wed 24/1218:44PHL - SEA

Nonstop6h 15mอลาสกาแอร์ไลน์

Mon 5/121:29SEA - PHL

Nonstop5h 08mอลาสกาแอร์ไลน์

Deal found 19/11฿8,984

Wed 24/1218:44PHL - SEA

Nonstop6h 15mอลาสกาแอร์ไลน์

Thu 1/121:29SEA - PHL

Nonstop5h 08mอลาสกาแอร์ไลน์

Deal found 19/11฿9,633

Fri 6/318:20PHL - SEA

Nonstop6h 13mอลาสกาแอร์ไลน์

Wed 25/321:15SEA - PHL

Nonstop5h 08mอลาสกาแอร์ไลน์

Deal found 21/11฿9,957

Thu 18/1207:00PHL - SEA

Nonstop6h 04mอลาสกาแอร์ไลน์

Tue 6/109:34SEA - PHL

Nonstop5h 10mอลาสกาแอร์ไลน์

Deal found 19/11฿10,119

Tue 3/318:20PHL - SEA

Nonstop6h 13mอลาสกาแอร์ไลน์

Fri 6/309:16SEA - PHL

Nonstop5h 04mอลาสกาแอร์ไลน์

Deal found 19/11฿10,281

Fri 6/318:20PHL - SEA

Nonstop6h 13mอลาสกาแอร์ไลน์

Fri 27/309:15SEA - PHL

Nonstop5h 13mอลาสกาแอร์ไลน์

Deal found 21/11฿10,606

Wed 17/1218:54PHL - SEA

Nonstop6h 18mอลาสกาแอร์ไลน์

Thu 1/121:29SEA - PHL

Nonstop5h 08mอลาสกาแอร์ไลน์

Deal found 19/11฿10,768

Thu 11/1207:06PHL - SEA

Nonstop6h 14mอลาสกาแอร์ไลน์

Sun 25/109:54SEA - PHL

Nonstop5h 09mอลาสกาแอร์ไลน์

Deal found 19/11฿11,092

Mon 22/1207:00PHL - SEA

Nonstop6h 04mอลาสกาแอร์ไลน์

Wed 31/1209:34SEA - PHL

Nonstop5h 10mอลาสกาแอร์ไลน์

Deal found 19/11฿11,579

Mon 22/1207:00PHL - SEA

Nonstop6h 04mอลาสกาแอร์ไลน์

Mon 5/121:29SEA - PHL

Nonstop5h 08mอลาสกาแอร์ไลน์

Deal found 19/11฿11,741

Last-minute flights from Philadelphia
Discover last-minute flight deals departing from Philadelphia. Data was last updated 21 November 2025 and is based on user searches.

Wed 26/1118:18PHL - SEA

Nonstop6h 06mอลาสกาแอร์ไลน์

Mon 1/1221:36SEA - PHL

Nonstop5h 11mอลาสกาแอร์ไลน์

Deal found 19/11฿25,525

Wed 26/1107:10PHL - SEA

Nonstop6h 07mอลาสกาแอร์ไลน์

Wed 3/1209:44SEA - PHL

Nonstop5h 09mอลาสกาแอร์ไลน์

Deal found 21/11฿30,227

Thu 27/1107:10PHL - SEA

Nonstop6h 07mอลาสกาแอร์ไลน์

Sun 7/1221:35SEA - PHL

Nonstop5h 11mอลาสกาแอร์ไลน์

Deal found 20/11฿14,660

Thu 27/1107:10PHL - SEA

Nonstop6h 07mอลาสกาแอร์ไลน์

Fri 28/1121:36SEA - PHL

Nonstop5h 11mอลาสกาแอร์ไลน์

Deal found 19/11฿16,768

Thu 27/1107:10PHL - SEA

Nonstop6h 07mอลาสกาแอร์ไลน์

Mon 1/1221:36SEA - PHL

Nonstop5h 11mอลาสกาแอร์ไลน์

Deal found 20/11฿46,930

Sat 29/1107:10PHL - SEA

Nonstop6h 07mอลาสกาแอร์ไลน์

Thu 4/1221:35SEA - PHL

Nonstop5h 11mอลาสกาแอร์ไลน์

Deal found 19/11฿24,227

Sat 29/1107:10PHL - SEA

Nonstop6h 07mอลาสกาแอร์ไลน์

Mon 1/1221:36SEA - PHL

Nonstop5h 11mอลาสกาแอร์ไลน์

Deal found 19/11฿26,336

Sat 29/1107:10PHL - SEA

Nonstop6h 07mอลาสกาแอร์ไลน์

Sat 29/1121:36SEA - PHL

Nonstop5h 11mอลาสกาแอร์ไลน์

Deal found 19/11฿37,363

One-way flights from Philadelphia
Search for one-way flight options from Philadelphia. Find affordable one-way fares based on user searches. Data last updated 21 November 2025.

Tue 17/218:20PHL - SEA

Nonstop6h 13mอลาสกาแอร์ไลน์

Deal found 19/11฿4,670

Tue 16/1218:54PHL - SEA

Nonstop6h 18mอลาสกาแอร์ไลน์

Deal found 18/11฿4,833

Wed 17/1218:54PHL - SEA

Nonstop6h 18mอลาสกาแอร์ไลน์

Deal found 21/11฿5,481

Sat 16/507:05PHL - SEA

Nonstop5h 59mเดลต้า

Deal found 20/11฿6,454

Fri 19/1207:00PHL - SEA

Nonstop6h 04mอลาสกาแอร์ไลน์

Deal found 20/11฿6,616

Mon 8/1218:35PHL - SEA

Nonstop6h 15mAmerican Airlines

Deal found 19/11฿7,006

Fri 15/507:05PHL - SEA

Nonstop5h 59mเดลต้า

Deal found 19/11฿7,103

Mon 18/507:05PHL - SEA

Nonstop5h 59mเดลต้า

Deal found 20/11฿7,751

Tue 23/1207:00PHL - SEA

Nonstop6h 04mอลาสกาแอร์ไลน์

Deal found 20/11฿8,238

Sat 20/1207:00PHL - SEA

Nonstop6h 04mอลาสกาแอร์ไลน์

Deal found 20/11฿10,022

Fri 26/1207:00PHL - SEA

Nonstop6h 04mอลาสกาแอร์ไลน์

Deal found 20/11฿12,292

Tue 2/1207:07PHL - SEA

Nonstop6h 13mอลาสกาแอร์ไลน์

Deal found 19/11฿13,427

Fly to

Route

Depart

Return

Price

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Sat 13/12

18:54-22:12

Nonstop6h 18m

Seattle/Tacoma Intl

Sat 24/1

09:54-18:03

Nonstop5h 09m

฿8,335

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Tue 3/2

19:06-22:29

Nonstop6h 23m

Seattle/Tacoma Intl

Tue 10/2

09:54-18:03

Nonstop5h 09m

฿8,335

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Wed 25/2

18:20-21:33

Nonstop6h 13m

Seattle/Tacoma Intl

Sat 28/2

09:16-17:20

Nonstop5h 04m

฿8,335

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Sat 28/2

18:20-21:33

Nonstop6h 13m

Seattle/Tacoma Intl

Sat 7/3

09:16-17:20

Nonstop5h 04m

฿8,335

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Mon 2/3

18:20-21:33

Nonstop6h 13m

Seattle/Tacoma Intl

Sat 7/3

09:16-17:20

Nonstop5h 04m

฿8,335

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Sat 28/2

18:20-21:33

Nonstop6h 13m

Seattle/Tacoma Intl

Fri 6/3

09:16-17:20

Nonstop5h 04m

฿8,335

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Fri 12/12

07:06-10:20

Nonstop6h 14m

Seattle/Tacoma Intl

Sat 24/1

09:54-18:03

Nonstop5h 09m

฿8,335

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Fri 12/12

07:06-10:20

Nonstop6h 14m

Seattle/Tacoma Intl

Tue 16/12

21:35-05:46

Nonstop5h 11m

฿8,335

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Sun 1/3

18:20-21:33

Nonstop6h 13m

Seattle/Tacoma Intl

Sat 7/3

09:16-17:20

Nonstop5h 04m

฿8,335

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Wed 17/12

18:54-22:12

Nonstop6h 18m

Seattle/Tacoma Intl

Wed 24/12

21:29-05:37

Nonstop5h 08m

฿8,822

Flights are sorted by cheapest return flights first.

Deals found on 20/11

Showing 1-10 of 21 results

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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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 17/2. 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.

Direct flights from Philadelphia

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 21 November 2025.

Explore the most affordable flight options available from Philadelphia. Find the lowest fares based on data from user searches, with prices last updated on 21 November 2025.

Last-minute flights from Philadelphia
Discover last-minute flight deals departing from Philadelphia. Data was last updated 21 November 2025 and is based on user searches.

Discover last-minute flight deals departing from Philadelphia. Data was last updated 21 November 2025 and is based on user searches.

One-way flights from Philadelphia
Search for one-way flight options from Philadelphia. Find affordable one-way fares based on user searches. Data last updated 21 November 2025.

Search for one-way flight options from Philadelphia. Find affordable one-way fares based on user searches. Data last updated 21 November 2025.

Find direct flights from Philadelphia within your budget

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.

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 North America cities

Book a direct flight from one of these popular origins located in North America.

Direct flights from United States

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฿4,670+ 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 17/2. 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.

Direct flights from Philadelphia

Cheapest flights from PhiladelphiaExplore the most affordable flight options available from Philadelphia. Find the lowest fares based on data from user searches, with prices last updated on 21 November 2025.

Explore the most affordable flight options available from Philadelphia. Find the lowest fares based on data from user searches, with prices last updated on 21 November 2025.

Find direct flights from Philadelphia within your budget

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.

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.

100% Free

Book with Flexibility

Travel Smart

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 21 November 2025.