In terms of precipitation, rainfall in Ko Samui ranges from 2.3 - 19.3 inches per month. November is typically the wettest month, when rainfall can reach 19.3 in. February is typically the driest time to visit Ko Samui when rainfall is around 2.3 in.

If weather is an important factor for your trip to Ko Samui, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 80.6 F).

What is the cheapest day to fly round-trip from Baltimore to Ko Samui?

Users have found that leaving on a Tuesday can be a cost-effective option. It’s possible to save up to 167% on your flight compared to booking on days when demand is much higher.

Can I find deals for flights from Baltimore to Ko Samui that include hotel bookings?

Yes. In addition to deals on Baltimore to Ko Samui flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Baltimore to Ko Samui?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Baltimore to Ko Samui.

Can I find deals for business class flights from Baltimore to Ko Samui?

Yes. Cheapflights offers flight deals from Baltimore to Ko Samui by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$546+ Flights from Baltimore to Ko Samui

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Cheap flight deals from Baltimore to Ko Samui

Round-trip from	$1,065 (Gurufare)
One-way from	$546 (Kiwi.com)

From Baltimore/Washington to Ko Samui

Search Deals

One-way flight from Baltimore/Washington to Ko Samui

Search Deals

Find flight deals from Baltimore to Ko Samui

Cheapest flights from Baltimore to Ko Samui
Explore the most affordable flight options available from Baltimore to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

Wed 9/106:00 amBWI - USM

3 stops39h 35mJapan Airlines

Wed 9/177:00 amUSM - BWI

3 stops51h 47mJapan Airlines

Deal found 7/27

$1,065

Wed 9/105:45 amBWI - USM

2 stops39h 05mMultiple Airlines

Wed 9/1712:05 pmUSM - BWI

2 stops29h 55mMultiple Airlines

Deal found 7/27

$1,143

Wed 9/106:55 pmBWI - USM

2 stops36h 20mSingapore Airlines

Wed 9/171:30 pmUSM - BWI

2 stops38h 37mSingapore Airlines

Deal found 7/27

$1,762

Thu 8/287:20 pmBWI - USM

2 stops36h 15mCathay Pacific

Thu 9/410:55 amUSM - BWI

2 stops47h 06mCathay Pacific

Deal found 7/29

$1,915

Best flights from Baltimore to Ko Samui
Discover carefully curated flight deals from Baltimore to Ko Samui that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 29, 2025.

Wed 9/106:00 amBWI - USM

3 stops39h 35mJapan Airlines

Wed 9/177:00 amUSM - BWI

3 stops51h 47mJapan Airlines

Deal found 7/27

$1,065

Wed 9/105:45 amBWI - USM

2 stops39h 05mMultiple Airlines

Wed 9/1712:05 pmUSM - BWI

2 stops29h 55mMultiple Airlines

Deal found 7/27

$1,143

Wed 9/106:55 pmBWI - USM

2 stops36h 20mSingapore Airlines

Wed 9/171:30 pmUSM - BWI

2 stops38h 37mSingapore Airlines

Deal found 7/27

$1,762

Thu 8/287:20 pmBWI - USM

2 stops36h 15mCathay Pacific

Thu 9/410:55 amUSM - BWI

2 stops47h 06mCathay Pacific

Deal found 7/29

$1,915

Last-minute flights from Baltimore to Ko Samui
Discover last-minute flight deals from Baltimore to Ko Samui. Data last updated July 29, 2025 and is based on user searches.

Tue 7/296:02 pmBWI - USM

2 stops37h 13mSingapore Airlines

Tue 8/51:30 pmUSM - BWI

3 stops62h 25mSingapore Airlines

Deal found 7/28

$4,028

Thu 8/2810:04 amBWI - USM

3 stops34h 31mMultiple Airlines

Thu 9/48:00 amUSM - BWI

3 stops34h 00mMultiple Airlines

Deal found 7/29

$1,529

Thu 8/287:20 pmBWI - USM

2 stops36h 15mCathay Pacific

Thu 9/410:55 amUSM - BWI

2 stops47h 06mCathay Pacific

Deal found 7/29

$1,915

One-way flights from Baltimore to Ko Samui
Search for one-way flight options from Baltimore to Ko Samui. Find affordable one-way fares based on user searches. Data last updated July 29, 2025.

Thu 9/251:21 pmBWI - USM

3 stops54h 59mMultiple Airlines

Deal found 7/27

$546

Tue 9/231:32 pmBWI - USM

2 stops42h 03mCathay Pacific

Deal found 7/27

$1,085

Wed 9/246:55 pmBWI - USM

2 stops39h 15mSingapore Airlines

Deal found 7/27

$1,088

Fly from

Fly to

Route

Depart

Return

Price

BaltimoreKo Samui

BWI - USM

BWIUSM

Baltimore/Washington

Wed 9/10

6:00 am-8:35 am

3 stops39h 35m

Ko Samui

Wed 9/17

7:00 am-11:47 pm

3 stops51h 47m

$1,065

BaltimoreKo Samui

BWI - USM

BWIUSM

Baltimore/Washington

Wed 9/10

5:45 am-7:50 am

2 stops39h 05m

Ko Samui

Wed 9/17

12:05 pm-7:00 am

2 stops29h 55m

$1,143

BaltimoreKo Samui

BWI - USM

BWIUSM

Baltimore/Washington

Wed 9/10

6:55 pm-6:15 pm

2 stops36h 20m

Ko Samui

Wed 9/17

1:30 pm-5:07 pm

2 stops38h 37m

$1,762

BaltimoreKo Samui

BWI - USM

BWIUSM

Baltimore/Washington

Thu 8/28

7:20 pm-6:35 pm

2 stops36h 15m

Ko Samui

Thu 9/4

10:55 am-11:01 pm

2 stops47h 06m

$1,915

BaltimoreKo Samui

BWI - USM

BWIUSM

Baltimore/Washington

Thu 9/25

1:21 pm-7:20 am

3 stops54h 59m

$546

BaltimoreKo Samui

BWI - USM

BWIUSM

Baltimore/Washington

Tue 9/23

1:32 pm-6:35 pm

2 stops42h 03m

$1,085

BaltimoreKo Samui

BWI - USM

BWIUSM

Baltimore/Washington

Wed 9/24

6:55 pm-9:10 pm

2 stops39h 15m

$1,088

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

Best time to book a flight from Baltimore to Ko Samui

Have a flexible travel schedule? Discover the best time to fly to Ko Samui from Baltimore with our price prediction graph.

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 Baltimore to Ko Samui

What is the cheapest time of day to fly from BWI to USM?

It’s typically best to fly out from Baltimore to Ko Samui in the evening. Doing so could potentially save you 65% on the flight price compared to flying in the afternoon, which is usually more expensive.

What is the cheapest day to fly from Baltimore to Ko Samui?

Travelers seeking maximum savings on their Baltimore to Ko Samui flight should consider departing on Friday 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.

Reviews of airlines servicing Ko Samui

Read reviews from past customers who have flown Japan Airlines, Singapore Airlines, and Cathay Pacific from Baltimore to Ko Samui. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Japan Airlines

8.3

Very good

1,535 reviews

Reviews

1 / 20

2.0

Mediocre

Roger,Jun 2025

ORD - PIT

My bag was at O’Hare airport for five hours waiting on my next flight because it was delayed for 2 1/2 hours and they couldn’t put it on the right goddamn airplane. I am home in Pennsylvania without my bag and all my stuff.

Japan Airlines

8.3

Very good

1,535 reviews

Japan Airlines

8.3

Very good

1,535 reviews

Reviews

1 / 20

2.0

Mediocre

Roger,Jun 2025

ORD - PIT

Singapore Airlines

8.1

Very good

1,335 reviews

Japan Airlines

8.3

Very good

1,535 reviews

Reviews

1 / 20

2.0

Mediocre

Roger,Jun 2025

ORD - PIT

Cathay Pacific

7.6

Good

948 reviews

Japan Airlines

8.3

Very good

1,535 reviews

Reviews

1 / 20

2.0

Mediocre

Roger,Jun 2025

ORD - PIT

Related info for your journey

Can I find deals for flights from Baltimore to Ko Samui that include hotel bookings?
Yes. In addition to deals on Baltimore to Ko Samui flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Baltimore to Ko Samui?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Baltimore to Ko Samui.
Can I find deals for business class flights from Baltimore to Ko Samui?
Yes. Cheapflights offers flight deals from Baltimore to Ko Samui by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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$546+ Cheap flights from Baltimore (BWI) to Ko Samui (USM)

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 9/25. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Baltimore to Ko Samui with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Baltimore to Ko Samui

Round-trip from

One-way from

Find flight deals from Baltimore to Ko Samui

Cheapest flights from Baltimore to Ko SamuiExplore the most affordable flight options available from Baltimore to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

Explore the most affordable flight options available from Baltimore to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Baltimore to Ko Samui that are best for you.

Best time to book a flight from Baltimore to Ko Samui

Have a flexible travel schedule? Discover the best time to fly to Ko Samui from Baltimore with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Baltimore to Ko Samui

What is the cheapest time of day to fly from BWI to USM?

Find hourly flight availability from Baltimore 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 July 29, 2025.

What is the cheapest day to fly from Baltimore to Ko Samui?

Use this chart to determine the cheapest time to fly round-trip from Baltimore to Ko Samui. Price data was last updated on March 30, 2025.

Reviews of airlines servicing Ko Samui

Read reviews from past customers who have flown Japan Airlines, Singapore Airlines, and Cathay Pacific from Baltimore to Ko Samui. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Baltimore to Ko Samui. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

Can I find deals for flights from Baltimore to Ko Samui that include hotel bookings?

How can I find direct flights from Baltimore to Ko Samui?

Can I find deals for business class flights from Baltimore to Ko Samui?

Traveling to a place near Ko Samui?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Baltimore to Ko Samui

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Travel Smart

Cheapest flights from Baltimore to Ko Samui
Explore the most affordable flight options available from Baltimore to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.