$978+ Cheap flights from Dallas 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 4/29. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Dallas to Ko Samui with Cheapflights
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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 Dallas to Ko Samui
Cheapest flights from Dallas to Ko SamuiExplore the most affordable flight options available from Dallas to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 30, 2025.
Explore the most affordable flight options available from Dallas to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 30, 2025.
This Expedia deal was found by Cheapflights users on 12/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Find flight deals from Dallas to Ko Samui
Discover tips and strategies to find the most affordable flight options for your journey from Dallas (A78) 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 December 30, 2025.
Round-trip from | $1,000 (FlightHub) |
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Cheapflights Fare Finder
Use the filters below to find and compare flights from Dallas to Ko Samui that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
DallasKo Samui
DFW - USM
DFWUSM
Dallas/Fort Worth
Wed 4/29
10:50 pm-9:35 pm
2 stops34h 45m
Ko Samui
Fri 5/8
8:45 am-7:55 pm
2 stops23h 10m
DallasKo Samui
DFW - USM
DFWUSM
Dallas/Fort Worth
Thu 4/30
10:50 pm-8:30 pm
2 stops33h 40m
Ko Samui
Fri 5/8
6:00 am-7:55 pm
2 stops25h 55m
DallasKo Samui
DFW - USM
DFWUSM
Dallas/Fort Worth
Thu 4/23
10:50 pm-4:35 pm
2 stops29h 45m
Ko Samui
Mon 4/27
9:15 am-7:40 pm
2 stops22h 25m
DallasKo Samui
DFW - USM
DFWUSM
Dallas/Fort Worth
Wed 4/29
4:12 pm-8:35 am
3 stops28h 23m
Ko Samui
Fri 5/8
8:35 pm-7:35 pm
2 stops35h 00m
Best time to book a flight from Dallas to Ko Samui
Have a flexible travel schedule? Discover the best time to fly to Ko Samui from Dallas with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Dallas to Ko Samui
What is the cheapest time of day to fly from DFW to USM?
Find hourly flight availability from Dallas to Ko Samui. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 30, 2025.
Unlike in the morning, when flights are generally more expensive, you can save up to 22% on flights from Dallas to Ko Samui by exploring options for tickets in the evening.
What is the cheapest day to fly from Dallas to Ko Samui?
Use this chart to determine the cheapest time to fly round-trip from Dallas to Ko Samui. Price data was last updated on March 30, 2025.
Travelers seeking maximum savings on their Dallas to Ko Samui flight should consider departing on Thursday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
How often are flights from Dallas to Ko Samui delayed?
About 22% of weekly flights between Dallas and Ko Samui have experienced delays in the past year, with the average delay time being 145 minutes.
What is the most punctual flight time for Dallas 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?
Tuesday 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 Dallas to Ko Samui flights?
Over the last year, Delta have had the lowest number of delays on this route, with just 13% of flights being delayed.