What is the most punctual flight time for Washington, D.C. to Ko Samui flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights at night have, in the past, seen delays more frequently in comparison.

How often are flights from Washington, D.C. to Ko Samui delayed?

Historically, on average around 22% of flights between Washington, D.C. and Ko Samui have experienced a delay on any given week. The average delay length over the past 12 months has been 130 minutes.

Which airline has the best punctuality record on Washington, D.C. to Ko Samui flights?

According to our data, American Airlines have had the least number of delays on this route over the last 12 months; with about 21% of their flights experiencing any sort of delay.

What day of the week experiences the fewest flight delays on this route?

Saturday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

When did momondo last update prices for flights from Washington, D.C. Reagan-National Airport to Ko Samui Airport?

Prices for flights from Washington, D.C. Reagan-National Airport to Ko Samui Airport were last updated today.

How old do you have to be to fly from Washington, D.C. Reagan-National Airport to Ko Samui Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. Reagan-National Airport to Ko Samui Airport.

What documentation or ID do you need to fly to Ko Samui Airport?

The travel and health documents required for your trip to Ko Samui Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ko Samui Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$188 Cheap Flights from Washington, D.C. Reagan-National Airport to Ko Samui in 2026

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Find the cheapest flights from Washington, D.C. Reagan-National Airport to Ko Samui

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5:00 pm - 7:40 pm

DCA

USM

39h 40m

2 stops

11:55 am - 3:52 pm

USM

DCA

38h 57m

2 stops

$1,405Multiple Airlines

Wed, Apr 15 - Wed, Apr 22

11:36 am - 7:40 pm

DCA

USM

45h 04m

2 stops

11:55 am - 7:05 pm

USM

DCA

42h 10m

2 stops

$1,410Cathay Pacific

Thu, Apr 9 - Wed, Apr 22

6:59 pm - 7:40 pm

DCA

USM

37h 41m

2 stops

11:55 am - 7:05 pm

USM

DCA

42h 10m

2 stops

$1,411Cathay Pacific

Wed, Apr 8 - Tue, Apr 21

6:59 pm - 7:40 pm

DCA

USM

37h 41m

2 stops

11:55 am - 10:59 pm

USM

DCA

46h 04m

2 stops

$1,429Cathay Pacific

Fri, Apr 10 - Wed, Apr 22

11:36 am - 7:40 pm

DCA

USM

45h 04m

2 stops

11:55 am - 8:35 pm

USM

DCA

43h 40m

2 stops

$1,438Multiple Airlines

Sun, Apr 12 - Sun, Apr 19

11:36 am - 7:40 pm

DCA

USM

45h 04m

2 stops

11:55 am - 7:05 pm

USM

DCA

42h 10m

2 stops

$1,460Cathay Pacific

Thu, Apr 9 - Thu, Apr 23

6:59 pm - 7:40 pm

DCA

USM

37h 41m

2 stops

11:55 am - 7:05 pm

USM

DCA

42h 10m

2 stops

$1,461Cathay Pacific

Wed, May 6 - Thu, May 14

6:59 pm - 7:40 pm

DCA

USM

37h 41m

2 stops

11:55 am - 7:05 pm

USM

DCA

42h 10m

2 stops

$1,465Cathay Pacific

Wed, Apr 8 - Thu, Apr 23

11:36 am - 7:40 pm

DCA

USM

45h 04m

2 stops

11:55 am - 7:05 pm

USM

DCA

42h 10m

2 stops

$1,488Cathay Pacific

Tue, Apr 7 - Thu, Apr 23

6:59 pm - 7:40 pm

DCA

USM

37h 41m

2 stops

11:55 am - 7:05 pm

USM

DCA

42h 10m

2 stops

$1,510Cathay Pacific

Fri, Apr 10 - Thu, Apr 23

Cathay Pacific flights from Washington, D.C. Reagan-National Airport to Ko Samui

Our best Cathay Pacific deals on Washington, D.C. Reagan-National Airport to Ko Samui flight tickets

Cathay Pacific

Apr 9

DCA11:36 amWashington, D.C. Reagan-National

45h 04m

2 stops

USM7:40 pmKo Samui

Apr 22

USM11:55 amKo Samui

42h 10m

2 stops

DCA7:05 pmWashington, D.C. Reagan-National

$1,410

Cathay Pacific

Apr 8

DCA6:59 pmWashington, D.C. Reagan-National

37h 41m

2 stops

USM7:40 pmKo Samui

Apr 21

USM11:55 amKo Samui

42h 10m

2 stops

DCA7:05 pmWashington, D.C. Reagan-National

$1,411

Cathay Pacific

Apr 10

DCA6:59 pmWashington, D.C. Reagan-National

37h 41m

2 stops

USM7:40 pmKo Samui

Apr 22

USM11:55 amKo Samui

46h 04m

2 stops

DCA10:59 pmWashington, D.C. Reagan-National

$1,429

momondo Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Ko Samui that are best for you.

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Route

Depart

Return

Price

Washington, D.C.Ko Samui

DCA - USM

DCAUSM

Washington, D.C. Reagan-National

Wed 4/15

5:00 pm-7:40 pm

2 stops39h 40m

Ko Samui

Wed 4/22

11:55 am-3:52 pm

2 stops38h 57m

$1,405

Washington, D.C.Ko Samui

DCA - USM

DCAUSM

Washington, D.C. Reagan-National

Thu 4/9

11:36 am-7:40 pm

2 stops45h 04m

Ko Samui

Wed 4/22

11:55 am-7:05 pm

2 stops42h 10m

$1,410

Washington, D.C.Ko Samui

DCA - USM

DCAUSM

Washington, D.C. Reagan-National

Wed 4/8

6:59 pm-7:40 pm

2 stops37h 41m

Ko Samui

Tue 4/21

11:55 am-7:05 pm

2 stops42h 10m

$1,411

Washington, D.C.Ko Samui

DCA - USM

DCAUSM

Washington, D.C. Reagan-National

Fri 4/10

6:59 pm-7:40 pm

2 stops37h 41m

Ko Samui

Wed 4/22

11:55 am-10:59 pm

2 stops46h 04m

$1,429

Washington, D.C.Ko Samui

DCA - USM

DCAUSM

Washington, D.C. Reagan-National

Sun 4/12

11:36 am-7:40 pm

2 stops45h 04m

Ko Samui

Sun 4/19

11:55 am-8:35 pm

2 stops43h 40m

$1,438

Washington, D.C.Ko Samui

DCA - USM

DCAUSM

Washington, D.C. Reagan-National

Thu 4/9

11:36 am-7:40 pm

2 stops45h 04m

Ko Samui

Thu 4/23

11:55 am-7:05 pm

2 stops42h 10m

$1,460

Washington, D.C.Ko Samui

DCA - USM

DCAUSM

Washington, D.C. Reagan-National

Wed 5/6

6:59 pm-7:40 pm

2 stops37h 41m

Ko Samui

Thu 5/14

11:55 am-7:05 pm

2 stops42h 10m

$1,461

Washington, D.C.Ko Samui

DCA - USM

DCAUSM

Washington, D.C. Reagan-National

Wed 4/8

6:59 pm-7:40 pm

2 stops37h 41m

Ko Samui

Thu 4/23

11:55 am-7:05 pm

2 stops42h 10m

$1,465

Washington, D.C.Ko Samui

DCA - USM

DCAUSM

Washington, D.C. Reagan-National

Tue 4/7

11:36 am-7:40 pm

2 stops45h 04m

Ko Samui

Thu 4/23

11:55 am-7:05 pm

2 stops42h 10m

$1,488

Washington, D.C.Ko Samui

DCA - USM

DCAUSM

Washington, D.C. Reagan-National

Fri 4/10

6:59 pm-7:40 pm

2 stops37h 41m

Ko Samui

Thu 4/23

11:55 am-7:05 pm

2 stops42h 10m

$1,510

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How to get the cheapest flight ticket from Washington, D.C. Reagan-National Airport to Ko Samui

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Delays

What is the cheapest day to depart on your flight to Ko Samui?

Our data shows that Wednesday is the least expensive day to fly to Ko Samui. Tickets to fly out on this day can be as low as $325. Flights from Washington, D.C. Reagan-National Airport to Ko Samui on a Sunday will generally be more expensive and average around $714. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Ko Samui?

Our data shows that the cheapest Washington, D.C. Reagan-National Airport to Ko Samui flights are usually those with departure times in the evening. Our users have found flights to Ko Samui in the evening for as low as $286. At noon is when there is more demand to fly to Ko Samui, so prices are often more expensive at around $399 per ticket.

When to book flights from Washington, D.C. Reagan-National Airport to Ko Samui

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Reagan-National Airport to Ko Samui according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Washington, D.C. Reagan-National Airport to Ko Samui (DCA to USM) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Reagan-National Airport to Ko Samui

Fastest flight time	32h 11m
Direct flights	None

The fastest flight from Washington, D.C. Reagan-National Airport to Ko Samui takes 32h 11m

There are no direct flights from Washington, D.C. Reagan-National Airport to Ko Samui. There are no popular flight routes from Washington, D.C. Reagan-National Airport to Ko Samui.

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How far is Washington, D.C. Reagan-National to Ko Samui by plane?
There are 9082.9 mi between Washington, D.C. Reagan-National and Ko Samui. 32h 11m is a normal flight duration for this route.
When did momondo last update prices for flights from Washington, D.C. Reagan-National Airport to Ko Samui Airport?
Prices for flights from Washington, D.C. Reagan-National Airport to Ko Samui Airport were last updated today.
How old do you have to be to fly from Washington, D.C. Reagan-National Airport to Ko Samui Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. Reagan-National Airport to Ko Samui Airport.
What documentation or ID do you need to fly to Ko Samui Airport?
The travel and health documents required for your trip to Ko Samui Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ko Samui Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Ko Tao

Ko Pha Ngan

Khanom

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Why should I use momondo to find a flight deal from Washington, D.C. to Ko Samui?

Finding the right flight to Ko Samui from Washington, D.C. is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Ko Samui quick and easy, saving you time and money.

Can I find flights from Washington, D.C. to Ko Samui with flexible booking policies on momondo?

Flights from Washington, D.C. to Ko Samui with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Washington, D.C. to Ko Samui?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Ko Samui from Washington, D.C..

I’m not ready to book a flight from Washington, D.C. to Ko Samui right now. Can momondo alert me if prices change?

Price alerts on flights to Ko Samui from Washington, D.C. are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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How to get the cheapest flight ticket from Washington, D.C. Reagan-National Airport to Ko Samui

What is the cheapest day to depart on your flight to Ko Samui?

What is the cheapest time of day to depart on your flight to Ko Samui?

How often are flights from Washington, D.C. to Ko Samui delayed?

What is the most punctual flight time for Washington, D.C. to Ko Samui flights?

What day of the week experiences the fewest flight delays on this route?

Which airline has the best punctuality record on Washington, D.C. to Ko Samui flights?

When to book flights from Washington, D.C. Reagan-National Airport to Ko Samui

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