HKG - USM

$183 Find Cheap Flights from Hong Kong to Ko Samui - Compare and Save

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Everything you should know

Cheapest round-trip
$347
Typical prices: $538-$758
Multiple Airlines
Sat 11/10Wed 11/14
HKG - USM • 1 stop
Cheapest non-stop
$564
Typical prices: $526-$722
Bangkok Airways
Sat 11/10Wed 11/14
HKG - USM • Non-stop
Nonstop flights
Every day
You can fly direct with Bangkok Airways. Average duration is 3h 30m
Direct flights
+1
Direct flights
+1
Avoid delays
Cathay Pacific
Most punctual • 88% on-time
Afternoon
Best time • Fewest delays
Insights
Insights
When to book
22 weeks
in advance
Our data shows that travelers who book at least 22 weeks in advance save around 23% compared to booking last minute.
Insights
Insights
When to travel
November
Cheapest • 23% price drop
January
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Singapore Changi (SIN)
Cheapest • Avg $464 (round-trip)
Phuket City (HKT)
Shortest trip • 5h 47m (one-way)
Insights
Insights
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We hope you love your trip to Ko Samui!
Flight Deals
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Expert advice
Flight Deals

Cheap Flights from Hong Kong to Ko Samui (HKG-USM)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Hong Kong to Ko Samui

Tue, Nov 10 - Sat, Nov 14
Multiple Airlines Logo
4:55 pm - 7:10 amHKG  Hong Kong Intl-USM Ko Samui
15h 15m1 stop Bangkok Suvarnabhumi
Multiple Airlines Logo
7:00 am - 3:55 pmUSM  Ko Samui-HKG Hong Kong Intl
7h 55m1 stop Bangkok Suvarnabhumi
$347Multiple Airlines
Wed, Nov 18 - Mon, Nov 30
Multiple Airlines Logo
4:55 pm - 7:10 amHKG  Hong Kong Intl-USM Ko Samui
15h 15m1 stop Bangkok Suvarnabhumi
Multiple Airlines Logo
7:00 am - 2:35 pmUSM  Ko Samui-HKG Hong Kong Intl
6h 35m1 stop Bangkok Suvarnabhumi
$356Multiple Airlines
Thu, Nov 19 - Mon, Nov 30
Multiple Airlines Logo
4:55 pm - 7:10 amHKG  Hong Kong Intl-USM Ko Samui
15h 15m1 stop Bangkok Suvarnabhumi
Multiple Airlines Logo
7:00 am - 2:35 pmUSM  Ko Samui-HKG Hong Kong Intl
6h 35m1 stop Bangkok Suvarnabhumi
$359Multiple Airlines
Sat, Mar 13 - Thu, Mar 18
Multiple Airlines Logo
9:40 pm - 7:10 amHKG  Hong Kong Intl-USM Ko Samui
10h 30m1 stop Bangkok Suvarnabhumi
Multiple Airlines Logo
7:00 am - 3:55 pmUSM  Ko Samui-HKG Hong Kong Intl
7h 55m1 stop Bangkok Suvarnabhumi
$383Multiple Airlines
Sat, Mar 13 - Thu, Mar 18
Bangkok Airways Logo
10:10 pm - 8:10 amHKG  Hong Kong Intl-USM Ko Samui
11h 00m1 stop Bangkok Suvarnabhumi
Bangkok Airways Logo
7:55 am - 3:35 pmUSM  Ko Samui-HKG Hong Kong Intl
6h 40m1 stop Bangkok Suvarnabhumi
$497Bangkok Airways
Sat, Nov 7 - Sun, Nov 8
Bangkok Airways Logo
2:30 pm - 8:25 pmHKG  Hong Kong Intl-USM Ko Samui
6h 55m1 stop Bangkok Suvarnabhumi
Bangkok Airways Logo
7:00 am - 3:35 pmUSM  Ko Samui-HKG Hong Kong Intl
7h 35m1 stop Bangkok Suvarnabhumi
$538Bangkok Airways
Sat, Nov 7 - Thu, Nov 12
Bangkok Airways Logo
2:30 pm - 8:25 pmHKG  Hong Kong Intl-USM Ko Samui
6h 55m1 stop Bangkok Suvarnabhumi
Bangkok Airways Logo
7:00 am - 7:15 pmUSM  Ko Samui-HKG Hong Kong Intl
11h 15m1 stop Bangkok Suvarnabhumi
$538Bangkok Airways
Sat, Mar 13 - Thu, Mar 18
Cathay Pacific Logo
5:05 pm - 7:35 pmHKG  Hong Kong Intl-USM Ko Samui
3h 30mnonstop
Cathay Pacific Logo
11:40 am - 3:55 pmUSM  Ko Samui-HKG Hong Kong Intl
3h 15mnonstop
$636Cathay Pacific
Wed, Nov 18 - Sun, Nov 29
Cathay Pacific Logo
5:05 pm - 7:35 pmHKG  Hong Kong Intl-USM Ko Samui
3h 30mnonstop
Cathay Pacific Logo
11:40 am - 3:55 pmUSM  Ko Samui-HKG Hong Kong Intl
3h 15mnonstop
$638Cathay Pacific
Thu, Nov 19 - Mon, Nov 30
Cathay Pacific Logo
5:05 pm - 7:35 pmHKG  Hong Kong Intl-USM Ko Samui
3h 30mnonstop
Cathay Pacific Logo
11:40 am - 3:55 pmUSM  Ko Samui-HKG Hong Kong Intl
3h 15mnonstop
$639Cathay Pacific
Booking Insights

Price, demand and travel trends for Hong Kong to Ko Samui flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

What's the cheapest day of the week to fly from Hong Kong to Ko Samui?

Based on deals KAYAK users found in the last 12 months, Friday is the cheapest day of the week to fly from Hong Kong to Ko Samui. It’s 10% cheaper than the average day, while Thursday is the most expensive, with prices 19% higher.

What’s the cheapest month to fly from Hong Kong to Ko Samui?

•November is the cheapest month to fly from Hong Kong to Ko Samui at $479 round-trip.
•February ($788) and December ($759) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 64% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from Hong Kong to Ko Samui the cheapest?

Flights from Hong Kong to Ko Samui are cheapest 22 weeks before departure. Booking in this window typically costs about 23% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

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Expert advice

Expert advice for your flight from Hong Kong to Ko Samui

 
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Robert Schrader

Robert Schrader

Expert on HKG

One of the web's original travel bloggers, Robert launched his first site Leave Your Daily Hell in 2009. Since then, he's expanded into destination niche sites (one each for Japan, Thailand and Taiwan), in addition to having written for the inflight magazines of Singapore Airlines and Korean Air. Overall, he's visited nearly 100 countries, and flies business as often as possible.

Read more
Duncan Madden

Duncan Madden

Expert on USM

Duncan is a freelance travel writer, copywriter and book author in constant search of travel stories and the perpetual sensation of being on holiday. He’s never happier than when on a dusty trail in search of empty waves or ducking under the piste tape in search of snowbound solitude. British born, living in Germany, but happiest heading for the horizon. His first book, Found in Translation, explores the etymologies and stories of country names around the world and is out now.

Read more

Key details for Hong Kong to Ko Samui flights

Low season

September

Cheapest flight

$183
Beat the crowds with an average 55% drop in travelers.
The most popular month to fly with an average 50% increase in travelers.
One-way flight from Hong Kong to Ko Samui

When to book flights from Hong Kong to Ko Samui

Are your dates flexible? Find out the best times to travel from Hong Kong to Ko Samui based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Hong Kong to Ko Samui flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What are the earliest and latest flights from Hong Kong to Ko Samui?

    These are the earliest and latest flight times available from Hong Kong to Ko Samui:

    • Earliest: departs at 5:05 pm and lands at 8:35 pm
    • Latest: departs at 5:05 pm and lands at 8:35 pm.

    The flight takes about 3h 30m.

  • What cabin classes can I book on flights from Hong Kong to Ko Samui?

    Two cabin classes are available on flights from Hong Kong to Ko Samui:

    • Economy Class
    • Business Class

  • How long is a flight from Hong Kong to Ko Samui?

    A nonstop flight from Hong Kong to Ko Samui takes 3h 30m, covering 1,272 miles.

  • Do I need a passport to fly from Hong Kong to Ko Samui?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much should I expect to pay for a Hong Kong to Ko Samui flight?

    Round-trip flights from Hong Kong to Ko Samui range from $538 to $758, with an average of $620 over the past 12 months. Anything below $538 counts as a good deal.

  • How expensive are last-minute Hong Kong to Ko Samui flights?

    Last-minute fares on this route (booked within two weeks of departure) run 4% above the $620 route average. Book 22 weeks before departure for the lowest fares.

  • How much can I save by taking a layover when flying from Hong Kong to Ko Samui?

    On this route, layover flights are cheaper than nonstop options on average. Layover fares average $464 round-trip via Singapore Changi (SIN), compared to $607 for nonstop.

  • Which aircraft model is used most often on flights from Hong Kong to Ko Samui?

    The Airbus A319 family is used most often on this route, operated mainly by Bangkok Airways and Cathay Pacific. Other aircraft seen on the route include Airbus A350-1000 variants.

  • How are flight departures from Hong Kong to Ko Samui spread across the day?

    Evening is the busiest departure period on Hong Kong to Ko Samui flights, with 100% of flights leaving in that window. Morning departures account for 0%, afternoon flights for 0%, and night flights for 0%.

  • Have flight prices from Hong Kong to Ko Samui changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $347 to $2,041. That means the highest observed fare was about 6x higher than the lowest one.

  • How are flight prices from Hong Kong to Ko Samui looking right now?

    One-way fares from Hong Kong to Ko Samui are currently in line with typical prices for this route. Average one-way fares are about $338.

  • What car rental options are available at Ko Samui Airport (USM)?

    Ko Samui Airport (USM) hosts 5 major car rental companies, with daily rates starting from around $13 for economy cars. Top options include:

    • Drive Car Rental
    • Alamo
    • Sixt
    • Enterprise Rent-A-Car
    • Thai Rent

  • Which airports can I use when flying from Hong Kong to Ko Samui?

    Flights from Hong Kong to Ko Samui usually depart from Hong Kong Intl (HKG) and arrive at Ko Samui (USM).

  • What time of day has the fewest delays on flights from Hong Kong to Ko Samui?

    Afternoon flights have the fewest delays on this route.

  • At what point is a flight considered delayed from Hong Kong to Ko Samui?

    A flight is considered delayed when it departs 15 minutes or more after its scheduled time. This is the standard used by the US Department of Transportation and most airline industry reporting. On the Hong Kong to Ko Samui route, 12% of flights were delayed in the past 3 months, with delays averaging 2h 31m.

  • Which airports do connecting flights from Hong Kong to Ko Samui pass through?

    One-stop flights from Hong Kong to Ko Samui most commonly connect through:

    • Bangkok Suvarnabhumi (BKK) - 93% of one-stop connections
    • Singapore Changi (SIN) - 3% of one-stop connections
    • Bangkok Don Mueang Intl (DMK) - 2% of one-stop connections
    • Phuket City (HKT) - 2% of one-stop connections

  • Can I save money by using flexible dates for flights from Hong Kong to Ko Samui?

    Yes. Flexible dates can save you up to 25% on flights from Hong Kong to Ko Samui. Friday is the cheapest departure day at $563 round-trip on average, while Thursday is the most expensive at $741, a difference of $178.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What airlines fly from Hong Kong to Ko Samui?

    Only Bangkok Airways operates flights between Hong Kong and Ko Samui.

  • How much time can I save by choosing a different layover airport from Hong Kong to Ko Samui?

    Flying via Phuket City (HKT) gives the shortest average 1-stop total travel time at 5h 47m, compared with 7h 22m via Bangkok Suvarnabhumi (BKK) and 9h via Singapore Changi (SIN).

  • What is the time difference between Hong Kong and Ko Samui?

    Ko Samui is 1 hour behind Hong Kong (Indochina Time vs Hong Kong Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in Ko Samui?

    Some of the most popular sights in Ko Samui are Lamai Beach, Chaweng Beach and Fishermans Village. These are among the most viewed places in Ko Samui on KAYAK.

  • Which airlines offer extra legroom and free seat selection on Hong Kong to Ko Samui flights?

    Among airlines operating Hong Kong to Ko Samui flights:

    • Bangkok Airways: offers free seat selection

    Extra legroom and free seat selection availability depends on fare class and route.

  • Which airlines include bags at no extra cost on Hong Kong to Ko Samui flights?

    Here are some options for this route, based on selected ticket types and cabin classes:

    • Bangkok Airways: a cabin bag and a checked bag in Economy Class
    • Cathay Pacific: a cabin bag and a checked bag in Economy Class

    Bag allowance can vary by ticket type, cabin class, route and airline, so always check the fare details before booking.

Your guide to booking Hong Kong to Ko Samui flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Friday departure and avoid flying on Thursday. On this route, Friday flights average $563, about $178 less than Thursday fares (24% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 22 weeks before you fly. On this route, that window historically saves about 23% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Hong Kong to Ko Samui trip for November. Fares historically average $479 round-trip in that month - typically $309 less than the most expensive month, which is February (based on the last 12 months).
  • For the best chance of arriving on time, fly with Bangkok Airways. Over the past three months, 88% of Bangkok Airways flights from Hong Kong to Ko Samui arrived on time, slightly above the route average of 88%. When flights on this route arrive late, they're delayed by an average of 2h 31m, so choosing an airline with strong on-time performance can make a difference if you're on a tight schedule.
  • If you have the time, taking a 1-stop flight through Singapore Changi Airport (SIN) can be cheaper than flying direct. The cheapest layover option averages $464 round-trip on this route - about $144 less than direct flights (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Ko Samui Airport.

    • Ozo Chaweng Samui - Sha Extra Plus
    • Melia Koh Samui
    • Amari Koh Samui

Prefer to fly direct from Hong Kong to Ko Samui?

 
Find which airlines fly direct from Hong Kong Intl Airport to Ko Samui Airport, which days they fly and book direct flights.

Direct departures

Hong Kong Intl to Ko Samui

Monday

Bangkok Airways

Bangkok Airways

Tuesday

Bangkok Airways

Bangkok Airways

Wednesday

Bangkok Airways

Bangkok Airways

Thursday

Bangkok Airways

Bangkok Airways

Friday

Bangkok Airways

Bangkok Airways

Saturday

Bangkok Airways

Bangkok Airways

Sunday

Bangkok Airways

Bangkok Airways

See more direct flights

Direct returns

Ko Samui to Hong Kong Intl

Monday

Bangkok Airways

Bangkok Airways

Tuesday

Bangkok Airways

Bangkok Airways

Wednesday

Bangkok Airways

Bangkok Airways

Thursday

Bangkok Airways

Bangkok Airways

Friday

Bangkok Airways

Bangkok Airways

Saturday

Bangkok Airways

Bangkok Airways

Sunday

Bangkok Airways

Bangkok Airways

See more direct flights

More options for your flight from Hong Kong to Ko Samui

Complete your trip to Ko Samui with a hotel stay or car rental

Car rentals in Ko Samui
Hotels in Ko Samui
Vacations in Ko Samui