In terms of precipitation, rainfall in Ko Samui ranges from 58.0 - 490.0 inches per month. November is typically the wettest month, when rainfall can reach 490.0 mm. February is typically the driest time to visit Ko Samui when rainfall is around 58.0 mm.

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 29.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 27.0 C).

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Grimsby to Ko Samui as you normally would.

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

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

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

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

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

Yes. Cheapflights offers flight deals from Grimsby 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.

£1,405+ Cheap Flights from Grimsby to Ko Samui

Cheap flight deals from Grimsby to Ko Samui

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

Cheapest flights from Grimsby to Ko Samui
Explore the most affordable flight options available from Grimsby to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 8 November 2026.

Tue 22/1217:10 -

3 stops20h 40m

Tue 29/1219:00 -

3 stops28h 40m

Deal found 7/11£1,405

Find flight deals from Grimsby to Ko Samui

Round-trip from	£1,405

22/12-29/12
6 total stops
49h 20m total
Grimsby to Ko Samui

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Fastest return journey

GrimsbyKo Samui

HUY Grimsby Humberside - USM Ko Samui

HUYUSM

Grimsby Humberside

Tue 22/12

17:10-20:50

3 stops20h 40m

Ko Samui

Tue 29/12

19:00-16:40

3 stops28h 40m

£1,405

Flights are sorted by cheapest return flights first.

Deals found on 7/11

Sorted by cheapest first

Best time to book a flight from Grimsby to Ko Samui

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

HUY-USM

Estimated return 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.

Related info for your journey

Can I find deals for flights from Grimsby to Ko Samui that include hotel bookings?
Yes. In addition to deals on Grimsby to Ko Samui flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Grimsby to Ko Samui?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Grimsby to Ko Samui.
Can I find deals for business class flights from Grimsby to Ko Samui?
Yes. Cheapflights offers flight deals from Grimsby 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.

Ko Pha Ngan

Ko Tao

Khanom

Browse thousands of different options on Cheapflights for your next trip

Alternative routes

Complete your trip

Direct flights to Thailand

Flights by cabin class

Ko Samui flight routes

Other flight options

Popular flights

Alternative routes for Grimsby to Ko Samui

Heathrow to Suvarnabhumi flights

Gatwick to Suvarnabhumi flights

Stansted to Suvarnabhumi flights

London City to Suvarnabhumi flights

Heathrow to Don Mueang Intl flights

Luton to Suvarnabhumi flights

Gatwick to Don Mueang Intl flights

Manchester to Suvarnabhumi flights

Manchester to Don Mueang Intl flights

Heathrow to Phuket City flights

Southend to Suvarnabhumi flights

Gatwick to Phuket City flights

Stansted to Phuket City flights

London City to Phuket City flights

Birmingham to Suvarnabhumi flights

Manchester to Phuket City flights

Luton to Phuket City flights

Birmingham to Don Mueang Intl flights

Edinburgh to Suvarnabhumi flights

Heathrow to Ko Samui flights

Newcastle upon Tyne to Suvarnabhumi flights

Gatwick to Ko Samui flights

Stansted to Ko Samui flights

London City to Ko Samui flights

Edinburgh to Don Mueang Intl flights

Heathrow to Krabi flights

Newcastle upon Tyne to Don Mueang Intl flights

Stansted to Krabi flights

Gatwick to Krabi flights

Newcastle upon Tyne to Krabi flights

Leeds to Suvarnabhumi flights

Heathrow to Chiang Mai flights

Gatwick to Chiang Mai flights

Birmingham to Phuket City flights

Edinburgh to Phuket City flights

London City to Krabi flights

Southampton to Suvarnabhumi flights

Bristol to Suvarnabhumi flights

London City to Chiang Mai flights

Stansted to Chiang Mai flights

Manchester to Ko Samui flights

Manchester to Krabi flights

Liverpool to Suvarnabhumi flights

Luton to Ko Samui flights

Heathrow to Rayong flights

Luton to Chiang Mai flights

Manchester to Chiang Mai flights

Gatwick to Rayong flights

Fly with Cheapflights

How does Cheapflights help users find flights from Grimsby to Ko Samui?

Cheapflights makes it easy to find Grimsby to Ko Samui flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Grimsby to Ko Samui?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Grimsby to Ko Samui.

Can Cheapflights find flights from Grimsby to Ko Samui with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Grimsby to Ko Samui flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Grimsby to Ko Samui become cheaper?

Not ready to book yet? You can track prices for flights from Grimsby to Ko Samui on Cheapflights with our Price Alert feature and get notified when better prices are available.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from Grimsby to Ko Samui from £1,405

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 22/12. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Grimsby to Ko Samui

Cheapest flights from Grimsby to Ko SamuiExplore the most affordable flight options available from Grimsby to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 8 November 2026.

Explore the most affordable flight options available from Grimsby to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 8 November 2026.

Best flights from Grimsby to Ko SamuiDiscover carefully curated flight deals from Grimsby to Ko Samui that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 8 November 2026.

Discover carefully curated flight deals from Grimsby to Ko Samui that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 8 November 2026.

Last-minute flights from Grimsby to Ko SamuiDiscover last-minute flight deals from Grimsby to Ko Samui. Data last updated 8 November 2026 and is based on user searches.

Discover last-minute flight deals from Grimsby to Ko Samui. Data last updated 8 November 2026 and is based on user searches.

Find flight deals from Grimsby to Ko Samui

Round-trip from

Cheapflights Fare Finder

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

Best time to book a flight from Grimsby to Ko Samui

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

Related info for your journey

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

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

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

Travelling 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 Grimsby to Ko Samui

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Ko Samui by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to Thailand

Book a non-stop flight to one of these other cities located in Thailand.

Search flights from Grimsby to Ko Samui by cabin class

Find flights from Grimsby to Ko Samui, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Other flights to Ko Samui

Explore flights to Ko Samui departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 8 November 2026.

Grimsby and Ko Samui flights

Browse other Grimsby and Ko Samui flight options. Last updated on 8 November 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026