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฿5,823+ 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 23/7. 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
4 Jul — 11 Jul1
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 29 June 2025.

Tue 16/907:20PHL - SEA
Nonstop5h 52mอลาสกาแอร์ไลน์
Wed 24/921:45SEA - PHL
Nonstop5h 15mอลาสกาแอร์ไลน์
Deal found 26/6฿10,149
Wed 23/706:45PHL - SEA
Nonstop5h 57mฮาวายเอี้ยนแอร์ไลน์
Tue 29/721:15SEA - PHL
Nonstop5h 10mฮาวายเอี้ยนแอร์ไลน์
Deal found 28/6฿12,426

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 29 June 2025.

Fly to

Suvarnabhumi

Route

Depart

Return

Price

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Tue 16/9

07:20-10:12

Nonstop5h 52m

Seattle/Tacoma Intl

Mon 22/9

21:45-06:00

Nonstop5h 15m

฿10,149

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Wed 23/7

06:45-09:42

Nonstop5h 57m

Seattle/Tacoma Intl

Tue 29/7

21:15-05:25

Nonstop5h 10m

฿12,426

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Wed 23/7

06:45-09:42

Nonstop5h 57m

฿5,823

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Sun 28/9

07:20-10:12

Nonstop5h 52m

฿5,985

Flights are sorted by cheapest return flights first.

Deals found on 29/6

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.
Check out reviews from past customers who have flown Korean Air, ANA, andJapan Airlines from Philadelphia to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very Good
1,101 reviews
Check prices

Boarding

8.5

Comfort

8.3

Overall

8.4

Entertainment

8.2

Crew

8.7

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Korean Air
8.4
Very Good
1,101 reviews
Korean Air
8.4
Very Good
1,101 reviews
Check prices

Boarding

8.5

Comfort

8.3

Overall

8.4

Entertainment

8.2

Crew

8.7

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
ANA
8.4
Very Good
891 reviews
Korean Air
8.4
Very Good
1,101 reviews
Check prices

Boarding

8.5

Comfort

8.3

Overall

8.4

Entertainment

8.2

Crew

8.7

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Japan Airlines
8.3
Very Good
1,504 reviews
Korean Air
8.4
Very Good
1,101 reviews
Check prices

Boarding

8.5

Comfort

8.3

Overall

8.4

Entertainment

8.2

Crew

8.7

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
เดลต้า
8.0
Very Good
7,965 reviews
Korean Air
8.4
Very Good
1,101 reviews
Check prices

Boarding

8.5

Comfort

8.3

Overall

8.4

Entertainment

8.2

Crew

8.7

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Cathay Pacific
7.6
Good
919 reviews
Korean Air
8.4
Very Good
1,101 reviews
Check prices

Boarding

8.5

Comfort

8.3

Overall

8.4

Entertainment

8.2

Crew

8.7

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

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 29 June 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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