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฿5,645+ 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 24/8. 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
3 May — 10 May1
1 adult

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 28 April 2025.

Sat 20/907:20PHL - SEA
Nonstop5h 52mฮาวายเอี้ยนแอร์ไลน์
Sun 28/921:45SEA - PHL
Nonstop5h 15mฮาวายเอี้ยนแอร์ไลน์
Deal found 28/4฿11,257
Sat 30/807:20PHL - SEA
Nonstop5h 52mอลาสกาแอร์ไลน์
Mon 8/921:45SEA - PHL
Nonstop5h 15mอลาสกาแอร์ไลน์
Deal found 28/4฿12,092

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 28 April 2025.

Fly to

Suvarnabhumi

Route

Depart

Return

Price

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Wed 27/8

07:20-10:12

Nonstop5h 52m

Seattle/Tacoma Intl

Wed 3/9

21:45-06:00

Nonstop5h 15m

฿11,257

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Wed 2/7

18:52-21:57

Nonstop6h 05m

Seattle/Tacoma Intl

Sun 6/7

21:15-05:25

Nonstop5h 10m

฿19,274

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Sun 24/8

07:20-10:12

Nonstop5h 52m

฿5,645

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Sun 25/5

07:00-09:56

Nonstop5h 56m

฿7,984

Flights are sorted by cheapest return flights first.

Deals found on 28/4

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.

Reviews of airlines flying direct to Philadelphia

Get insights into the airlines that provide direct flights from Philadelphia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight from Philadelphia. Reviews last updated Cheapflights.
Japan Airlines
8.3
Very Good
1,459 reviews
Check prices

Crew

8.7

Boarding

8.4

Comfort

8.2

Overall

8.3

Entertainment

7.8

Food

7.7

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.
Japan Airlines
8.3
Very Good
1,459 reviews
Japan Airlines
8.3
Very Good
1,459 reviews
Check prices

Crew

8.7

Boarding

8.4

Comfort

8.2

Overall

8.3

Entertainment

7.8

Food

7.7

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.
ANA
8.3
Very Good
855 reviews
Japan Airlines
8.3
Very Good
1,459 reviews
Check prices

Crew

8.7

Boarding

8.4

Comfort

8.2

Overall

8.3

Entertainment

7.8

Food

7.7

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.
Asiana Airlines
8.2
Very Good
443 reviews
Japan Airlines
8.3
Very Good
1,459 reviews
Check prices

Crew

8.7

Boarding

8.4

Comfort

8.2

Overall

8.3

Entertainment

7.8

Food

7.7

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.
Cathay Pacific
7.5
Good
852 reviews
Japan Airlines
8.3
Very Good
1,459 reviews
Check prices

Crew

8.7

Boarding

8.4

Comfort

8.2

Overall

8.3

Entertainment

7.8

Food

7.7

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.
China Southern
7.5
Good
95 reviews
Japan Airlines
8.3
Very Good
1,459 reviews
Check prices

Crew

8.7

Boarding

8.4

Comfort

8.2

Overall

8.3

Entertainment

7.8

Food

7.7

Reviews

1 / 20
10.0
Excellent

L,Nov 2024

SNA - SEA

Excellent crew, great food and decent audio selection. Seats are wide and have plenty of leg room but could use some more padding.

Related info for your journey

Access useful and relevant information related to your journey from Philadelphia. This can include details such as airport transportation, visa requirements, travel insurance, luggage regulations, and any other information that can ensure a smooth and hassle-free travel experience. Please note that the information is based on general guidance and may need to be verified with official sources. Data last updated 28 April 2025.

  • Where can you fly direct from Philadelphia?

    Currently, the most popular direct flight destination from Philadelphia is Los Angeles.

  • What is the best time of year to fly direct from Philadelphia?

    If you're seeking the lowest price on a direct flight from Philadelphia, September is worth consideration as prices are at their lowest, on average. In terms of the number of daily non-stop flights, February offers travelers the most options.

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