$1,136+ Cheap flights from Philadelphia (PHL) to Ko Samui (USM)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/12. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — USM
Nov 9 — Nov 161
Round-trip
1 adult, Economy
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Find cheap flights from Philadelphia to Ko Samui with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Philadelphia to Ko Samui
Cheapest
Best
Last-minute
Cheapest flights from Philadelphia to Ko SamuiExplore the most affordable flight options available from Philadelphia to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 10, 2026.
Explore the most affordable flight options available from Philadelphia to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 10, 2026.
This IEagle deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/128:45 pm -
2 stops25h 55m
Mon 11/167:00 pm -
2 stops31h 50m
Deal found 10/6![Qatar Airways logo]()
$1,136
This Mytrip deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/128:30 am -
3 stops47h 05m
Mon 11/164:30 pm -
3 stops42h 46m
Deal found 10/6![Multiple Airlines logo]()
$1,248
This IEagle deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/208:45 pm -
2 stops26h 45m
Fri 11/278:20 pm -
2 stops30h 30m
Deal found 10/6![Qatar Airways logo]()
$1,618
This Mytrip deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/203:20 pm -
3 stops28h 15m
Fri 11/273:50 pm -
2 stops35h 00m
Deal found 10/6![Multiple Airlines logo]()
$2,348
Best flights from Philadelphia to Ko SamuiDiscover carefully curated flight deals from Philadelphia to Ko Samui that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 10, 2026.
Discover carefully curated flight deals from Philadelphia to Ko Samui that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 10, 2026.
This FlightHub deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/318:45 pm -
2 stops29h 05m
Sun 2/286:15 pm -
2 stops32h 35m
Deal found 10/6![Multiple Airlines logo]()
$1,157
This KAYAK deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1210:40 am -
2 stops44h 55m
Mon 11/162:25 pm -
3 stops41h 36m
Deal found 10/6![Multiple Airlines logo]()
$1,337
This Malaysia Airlines deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Malaysia Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/68:45 pm -
3 stops35h 40m
Sat 2/135:05 pm -
3 stops33h 45m
Deal found 10/6![Multiple Airlines logo]()
$2,279
Last-minute flights from Philadelphia to Ko SamuiDiscover last-minute flight deals from Philadelphia to Ko Samui. Data last updated October 10, 2026 and is based on user searches.
Discover last-minute flight deals from Philadelphia to Ko Samui. Data last updated October 10, 2026 and is based on user searches.
This IEagle deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/128:45 pm -
2 stops25h 55m
Mon 11/167:00 pm -
2 stops31h 50m
Deal found 10/6![Qatar Airways logo]()
$1,136
This Mytrip deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/128:30 am -
3 stops47h 05m
Mon 11/164:30 pm -
3 stops42h 46m
Deal found 10/6![Multiple Airlines logo]()
$1,248
This IEagle deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/208:45 pm -
2 stops26h 45m
Fri 11/278:20 pm -
2 stops30h 30m
Deal found 10/6![Qatar Airways logo]()
$1,618
This Mytrip deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/203:20 pm -
3 stops28h 15m
Fri 11/273:50 pm -
2 stops35h 00m
Deal found 10/6![Multiple Airlines logo]()
$2,348
Find flight deals from Philadelphia to Ko Samui
Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to Ko Samui (USM). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,106 (Justfly.com) |
Cheapflights Fare Finder
Customize your flight search to find flights from Philadelphia to Ko Samui that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 10, 2026.
Use the filters below to find and compare flights from Philadelphia to Ko Samui that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
PhiladelphiaKo Samui
PHL Philadelphia - USM Ko Samui
PHLUSM
Philadelphia
Sun 1/31
8:45 pm-1:50 pm
2 stops29h 05m
Ko Samui
Sun 2/28
6:15 pm-2:50 pm
2 stops32h 35m
$1,157
PhiladelphiaKo Samui
PHL Philadelphia - USM Ko Samui
PHLUSM
Philadelphia
Thu 11/12
10:40 am-7:35 pm
2 stops44h 55m
Ko Samui
Mon 11/16
2:25 pm-8:01 pm
3 stops41h 36m
$1,337
PhiladelphiaKo Samui
PHL Philadelphia - USM Ko Samui
PHLUSM
Philadelphia
Sat 2/6
8:45 pm-8:25 pm
3 stops35h 40m
Ko Samui
Sat 2/13
5:05 pm-2:50 pm
3 stops33h 45m
$2,279
Sorted by cheapest first
Compare providers for flights from Philadelphia to Ko Samui
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Philadelphia to Ko Samui in October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Philadelphia-Ko Samui flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Philadelphia-Ko Samui flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Philadelphia-Ko Samui flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Philadelphia-Ko Samui flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Philadelphia-Ko Samui flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Philadelphia to Ko Samui
Have a flexible travel schedule? Discover the best time to fly to Ko Samui from Philadelphia with our price prediction graph.
PHL-USM
Estimated round-trip 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.
Cheapflights Insights
Everything you need to know about your flight from Philadelphia to Ko Samui
How often are flights from Philadelphia to Ko Samui delayed?
About 17% of weekly flights between Philadelphia and Ko Samui have experienced delays in the past year, with the average delay time being 129 minutes.
What is the most punctual flight time for Philadelphia to Ko Samui flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Saturday tends to have the lowest number of delays on this route, whereas Monday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Philadelphia to Ko Samui flights?
Over the last year, Delta have had the lowest number of delays on this route, with just 15% of flights being delayed.
Related info for your journey
Find useful and relevant information for your journey from Philadelphia to Ko Samui. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Ko Samui?
Book flights to Ko Samui if you plan to visit one of these locationsKo Tao
Ko Pha Ngan
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