How long is the flight from Portsmouth to Thailand?

For as low as £589, KLM can have you in Thailand from Portsmouth in 18h 25m. Portsmouth and Thailand are separated by a distance of 5995 mi. This flight may include one or multiple stops.

In terms of precipitation, rainfall in Thailand ranges from 10.0 - 320.0 inches per month. September is typically the wettest month, when rainfall can reach 320.0 mm. January is typically the driest time to visit Thailand when rainfall is around 10.0 mm.

If weather is an important factor for your trip to Thailand, 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 30.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 26.0 C).

What are the most popular routes from Portsmouth to Thailand?

Most travelers choose Southampton Eastleigh - Bangkok Suvarnabhumi, Southampton Eastleigh - Phuket City or Southampton Eastleigh - Ko Samui when deciding on the best route from Portsmouth to Thailand.

What are the cheapest flights from Portsmouth to Thailand?

The cheapest flight price from Portsmouth to Thailand is £482. On average you can expect to pay £2,541. The most popular route, (Southampton Eastleigh - Bangkok Suvarnabhumi), can usually be booked for £590.

What are the most reliable airlines from Portsmouth to Thailand?

No one likes to see their flight delayed. When booking a flight from Portsmouth to Thailand consider choosing EVA Air (85%), Thai Airways (85%) or Air Canada (80%) as they are the most reliable in getting you off to your destination on time.

Can I find deals for flights from Portsmouth to Thailand that include hotel bookings?

Yes. In addition to deals on Portsmouth to Thailand flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Portsmouth to Thailand?

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

Can I find deals for business class flights from Portsmouth to Thailand?

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

£302+ Cheap Flights from Portsmouth to Thailand

Cheap flight deals from Portsmouth to Thailand

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from Portsmouth to Thailand
Explore the most affordable flight options available from Portsmouth to Thailand. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 August 2026.

Mon 7/917:20 -

1 stop34h 10m

Mon 28/912:05 -

1 stop26h 30m

Deal found 17/8£558

Mon 21/917:20 -

1 stop34h 10m

Mon 12/1012:05 -

1 stop26h 30m

Deal found 18/8£560

Tue 8/909:05 -

1 stop18h 25m

Mon 5/1012:05 -

1 stop34h 45m

Deal found 17/8£589

Wed 30/909:20 -

2 stops27h 00m

Tue 6/1000:55 -

2 stops45h 55m

Deal found 16/8£597

Mon 21/920:00 -

2 stops34h 10m

Mon 12/1008:00 -

3 stops41h 30m

Deal found 18/8£601

Mon 7/909:20 -

2 stops26h 50m

Mon 28/909:15 -

2 stops29h 25m

Deal found 17/8£608

Sun 4/1009:20 -

2 stops27h 00m

Sun 11/1009:25 -

2 stops29h 15m

Deal found 20/8£619

Mon 9/1120:00 -

2 stops27h 50m

Sat 14/1100:25 -

2 stops23h 10m

Deal found 17/8£782

Wed 30/909:15 -

2 stops29h 15m

Wed 7/1006:00 -

2 stops32h 35m

Deal found 16/8£886

Sat 17/1017:20 -

2 stops20h 40m

Tue 20/1021:35 -

2 stops27h 55m

Deal found 19/8£892

Wed 23/920:00 -

2 stops29h 45m

Sun 27/921:35 -

2 stops27h 55m

Deal found 16/8£914

Sat 19/909:20 -

2 stops28h 40m

Wed 23/921:35 -

2 stops27h 55m

Deal found 17/8£915

Best flights from Portsmouth to Thailand
Discover carefully curated flight deals from Portsmouth to Thailand that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 August 2026.

Tue 8/909:05 -

1 stop18h 25m

Mon 5/1012:05 -

1 stop34h 45m

Deal found 16/8£589

Sun 4/1009:20 -

2 stops27h 00m

Sun 11/1009:25 -

2 stops29h 15m

Deal found 20/8£619

Mon 7/920:00 -

2 stops29h 35m

Sun 13/920:00 -

2 stops29h 30m

Deal found 19/8£800

Sun 17/109:20 -

2 stops26h 00m

Tue 16/215:30 -

2 stops35h 00m

Deal found 19/8£715

Sun 20/909:20 -

2 stops21h 35m

Wed 14/1009:15 -

2 stops40h 15m

Deal found 20/8£804

Mon 16/1109:20 -

2 stops20h 45m

Sun 6/1202:00 -

2 stops21h 35m

Deal found 17/8£779

Thu 5/1120:00 -

2 stops27h 40m

Thu 26/1108:15 -

2 stops42h 15m

Deal found 16/8£805

Mon 9/1120:00 -

2 stops27h 50m

Sat 14/1100:25 -

2 stops23h 10m

Deal found 17/8£782

Fri 18/920:00 -

2 stops28h 20m

Thu 8/1002:30 -

2 stops23h 00m

Deal found 21/8£816

Mon 28/909:20 -

2 stops22h 05m

Sun 1/1103:00 -

2 stops20h 35m

Deal found 18/8£782

Thu 5/1109:20 -

2 stops27h 05m

Sat 14/1103:00 -

2 stops20h 35m

Deal found 19/8£790

Wed 23/920:00 -

2 stops29h 45m

Sun 27/921:35 -

2 stops27h 55m

Deal found 16/8£914

Wed 17/209:20 -

2 stops20h 45m

Tue 9/302:00 -

2 stops24h 30m

Deal found 19/8£796

Sat 19/920:00 -

2 stops29h 45m

Wed 23/921:35 -

2 stops27h 55m

Deal found 18/8£914

Mon 15/209:20 -

2 stops20h 45m

Sun 7/303:00 -

2 stops20h 35m

Deal found 17/8£796

Thu 22/1009:20 -

2 stops40h 15m

Fri 30/1003:00 -

2 stops20h 35m

Deal found 20/8£796

Mon 5/1020:00 -

3 stops32h 30m

Mon 12/1019:00 -

3 stops30h 30m

Deal found 21/8£1,010

Wed 30/909:15 -

2 stops29h 15m

Wed 7/1006:00 -

2 stops32h 35m

Deal found 16/8£886

Sat 17/1017:20 -

2 stops20h 40m

Tue 20/1021:35 -

2 stops27h 55m

Deal found 19/8£892

Mon 5/1017:20 -

2 stops37h 25m

Mon 12/1006:00 -

2 stops32h 35m

Deal found 21/8£915

Tue 29/1220:00 -

2 stops27h 50m

Wed 13/108:20 -

2 stops39h 15m

Deal found 15/8£1,328

Find flight deals from Portsmouth to Thailand

Round-trip from	£558
One-way from	£302
Popular in	December
Cheapest in	September
Average price	£688

KLM
7/9-28/9
2 total stops
60h 40m total
Portsmouth to Thailand

Search Deals

25/8
3 total stops
27h 20m total
Portsmouth to Thailand

Search Deals

Highest demand for flights based on searches. 7% potential increase in price (£35 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£15 potential savings vs. average return price).

Search Deals

Average for round-trip flights in August 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SouthamptonBangkok

SOU Southampton Eastleigh - BKK Bangkok Suvarnabhumi

SOUBKK

Southampton Eastleigh

Tue 8/9

09:05-09:30

1 stop18h 25m

Bangkok Suvarnabhumi

Mon 5/10

12:05-16:50

1 stop34h 45m

£589

SouthamptonPhuket City

SOU Southampton Eastleigh - HKT Phuket City

SOUHKT

Southampton Eastleigh

Sun 4/10

09:20-18:20

2 stops27h 00m

Phuket City

Sun 11/10

09:25-08:40

2 stops29h 15m

£619

SouthamptonPhuket City

SOU Southampton Eastleigh - HKT Phuket City

SOUHKT

Southampton Eastleigh

Sun 17/1

09:20-18:20

2 stops26h 00m

Phuket City

Tue 16/2

15:30-19:30

2 stops35h 00m

£715

SouthamptonBangkok

SOU Southampton Eastleigh - BKK Bangkok Suvarnabhumi

SOUBKK

Southampton Eastleigh

Mon 16/11

09:20-13:05

2 stops20h 45m

Bangkok Suvarnabhumi

Sun 6/12

02:00-16:35

2 stops21h 35m

£779

SouthamptonPhuket City

SOU Southampton Eastleigh - HKT Phuket City

SOUHKT

Southampton Eastleigh

Mon 9/11

20:00-06:50

2 stops27h 50m

Phuket City

Sat 14/11

00:25-16:35

2 stops23h 10m

£782

SouthamptonBangkok

SOU Southampton Eastleigh - BKK Bangkok Suvarnabhumi

SOUBKK

Southampton Eastleigh

Mon 28/9

09:20-13:25

2 stops22h 05m

Bangkok Suvarnabhumi

Sun 1/11

03:00-16:35

2 stops20h 35m

£782

SouthamptonBangkok

SOU Southampton Eastleigh - BKK Bangkok Suvarnabhumi

SOUBKK

Southampton Eastleigh

Thu 5/11

09:20-19:25

2 stops27h 05m

Bangkok Suvarnabhumi

Sat 14/11

03:00-16:35

2 stops20h 35m

£790

SouthamptonBangkok

SOU Southampton Eastleigh - BKK Bangkok Suvarnabhumi

SOUBKK

Southampton Eastleigh

Wed 17/2

09:20-13:05

2 stops20h 45m

Bangkok Suvarnabhumi

Tue 9/3

02:00-19:30

2 stops24h 30m

£796

Fastest return journey

SouthamptonBangkok

SOU Southampton Eastleigh - BKK Bangkok Suvarnabhumi

SOUBKK

Southampton Eastleigh

Mon 15/2

09:20-13:05

2 stops20h 45m

Bangkok Suvarnabhumi

Sun 7/3

03:00-16:35

2 stops20h 35m

£796

SouthamptonBangkok

SOU Southampton Eastleigh - BKK Bangkok Suvarnabhumi

SOUBKK

Southampton Eastleigh

Thu 22/10

09:20-07:35

2 stops40h 15m

Bangkok Suvarnabhumi

Fri 30/10

03:00-16:35

2 stops20h 35m

£796

Flights are sorted by cheapest return flights first.

Deals found on 19/8

Showing 1-10 of 36 resultsSorted by cheapest first

Best time to book a flight from Portsmouth to Thailand

Have a flexible travel schedule? Discover the best time to fly to Thailand from Portsmouth with our price prediction graph.

SOU-BKK

SOU-HKT

SOU-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.

Cheapflights Insights

Everything you need to know about your flight from Portsmouth to Thailand

P0R-TH0

SOU-BKK

SOU-HKT

SOU-USM

What is the cheapest time of day to fly from P0R to TH?

It’s optimal to fly from Portsmouth to Thailand at midday. By choosing this option you can save up to 43% on the cost of your flight, compared to a flight in the evening.

Weekly flight availability from Portsmouth to Thailand

The most flights from P0R to TH0 are scheduled on a Monday (9 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (9 on average).

What is the cheapest day to fly from Portsmouth to Thailand?

Travellers seeking maximum savings on their Portsmouth to Thailand flight should consider departing on Tuesday at midday when fares are most often at their lowest. Thursday at midday flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Thailand

Read reviews from past customers who have flown with KLM from Portsmouth to Thailand. 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.

KLM

7.8

Good

1,560 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Abhisek,Aug 2026

JFK - AMS

They didn’t offer any options for breakfast and had only one option which was cold meat and cheese. I would expect at least one more option in premium economy

KLM

7.8

Good

1,560 reviews

KLM

7.8

Good

1,560 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Abhisek,Aug 2026

JFK - AMS

They didn’t offer any options for breakfast and had only one option which was cold meat and cheese. I would expect at least one more option in premium economy

Related info for your journey

How long is the flight from Portsmouth to Thailand?
For as low as £589, KLM can have you in Thailand from Portsmouth in 18h 25m. Portsmouth and Thailand are separated by a distance of 5995 mi. This flight may include one or multiple stops.
What are the most popular routes from Portsmouth to Thailand?
Most travelers choose Southampton Eastleigh - Bangkok Suvarnabhumi, Southampton Eastleigh - Phuket City or Southampton Eastleigh - Ko Samui when deciding on the best route from Portsmouth to Thailand.
What are the most reliable airlines from Portsmouth to Thailand?
No one likes to see their flight delayed. When booking a flight from Portsmouth to Thailand consider choosing EVA Air (85%), Thai Airways (85%) or Air Canada (80%) as they are the most reliable in getting you off to your destination on time.
What are the cheapest flights from Portsmouth to Thailand?
The cheapest flight price from Portsmouth to Thailand is £482. On average you can expect to pay £2,541. The most popular route, (Southampton Eastleigh - Bangkok Suvarnabhumi), can usually be booked for £590.
Can I find deals for flights from Portsmouth to Thailand that include hotel bookings?
Yes. In addition to deals on Portsmouth to Thailand flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Portsmouth to Thailand?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portsmouth to Thailand.
Can I find deals for business class flights from Portsmouth to Thailand?
Yes. Cheapflights offers flight deals from Portsmouth to Thailand by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes

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Alternative routes for Portsmouth to Thailand

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Top 10 airlines flying from Portsmouth to Thailand

Airline	Cheapest	Average	Flexibility	On-time
Bangkok Airways	Cheapest£116	Average£164	FlexibilityNo cancel fee	On-time74%	Search Bangkok Airways flights
Turkmenistan Airlines	Cheapest£265	Average£543	FlexibilityNo cancel fee	On-time63%	Search Turkmenistan Airlines flights
Hahn Air	Cheapest£270	Average£658	FlexibilityNo cancel fee	On-timeN/A	Search Hahn Air flights
Scandinavian Airlines	Cheapest£279	Average£630	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights
Vietnam Airlines	Cheapest£317	Average£640	FlexibilityNo cancel fee	On-time81%	Search Vietnam Airlines flights
Hainan Airlines	Cheapest£360	Average£415	FlexibilityNo cancel fee	On-time61%	Search Hainan Airlines flights
Royal Jordanian	Cheapest£402	Average£665	FlexibilityNo cancel fee	On-time61%	Search Royal Jordanian flights
A.P.G.	Cheapest£452	Average£688	FlexibilityNo cancel fee	On-timeN/A	Search A.P.G. flights
Lufthansa	Cheapest£453	Average£702	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Kuwait Airways	Cheapest£461	Average£562	FlexibilityNo cancel fee	On-time64%	Search Kuwait Airways flights

Fly with Cheapflights

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Cheapflights helps you search for flights from Portsmouth to Thailand via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Portsmouth to Thailand?

Cheapflights helps you find that perfect flight to Thailand from Portsmouth by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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Users can book flights with no change fees policies with our dedicated filters. Book flights from Portsmouth to Thailand flexibly with Cheapflights today.

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Cheap flights from Portsmouth to Thailand from £302

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 25/8. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Portsmouth to Thailand

Cheapest flights from Portsmouth to ThailandExplore the most affordable flight options available from Portsmouth to Thailand. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 August 2026.

Explore the most affordable flight options available from Portsmouth to Thailand. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 August 2026.

Best flights from Portsmouth to ThailandDiscover carefully curated flight deals from Portsmouth to Thailand that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 August 2026.

Discover carefully curated flight deals from Portsmouth to Thailand that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 August 2026.

Last-minute flights from Portsmouth to ThailandDiscover last-minute flight deals from Portsmouth to Thailand. Data last updated 21 August 2026 and is based on user searches.

Discover last-minute flight deals from Portsmouth to Thailand. Data last updated 21 August 2026 and is based on user searches.

One-way flights from Portsmouth to ThailandSearch for one-way flight options from Portsmouth to Thailand. Find affordable one-way fares based on user searches. Data last updated 21 August 2026.

Search for one-way flight options from Portsmouth to Thailand. Find affordable one-way fares based on user searches. Data last updated 21 August 2026.

Find flight deals from Portsmouth to Thailand

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Portsmouth to Thailand that are best for you.

Best time to book a flight from Portsmouth to Thailand

Have a flexible travel schedule? Discover the best time to fly to Thailand from Portsmouth with our price prediction graph.

Cheapflights Insights

What is the cheapest time of day to fly from P0R to TH?

Find hourly flight availability from Portsmouth to Thailand. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 21 August 2026.

It’s optimal to fly from Portsmouth to Thailand at midday. By choosing this option you can save up to 43% on the cost of your flight, compared to a flight in the evening.

Weekly flight availability from Portsmouth to Thailand

Explore weekly flight availability from Portsmouth to Thailand. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 21 August 2026.

The most flights from P0R to TH0 are scheduled on a Monday (9 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (9 on average).

What is the cheapest day to fly from Portsmouth to Thailand?

Use this chart to determine the cheapest time to fly return from Portsmouth to Thailand. Price data was last updated on 15 August 2026.

Travellers seeking maximum savings on their Portsmouth to Thailand flight should consider departing on Tuesday at midday when fares are most often at their lowest. Thursday at midday flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Thailand

Read reviews from past customers who have flown with KLM from Portsmouth to Thailand. 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

How long is the flight from Portsmouth to Thailand?

What are the most popular routes from Portsmouth to Thailand?

What are the most reliable airlines from Portsmouth to Thailand?

What are the cheapest flights from Portsmouth to Thailand?

Can I find deals for flights from Portsmouth to Thailand that include hotel bookings?

How can I find direct flights from Portsmouth to Thailand?

Can I find deals for business class flights from Portsmouth to Thailand?

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 Portsmouth to Thailand

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

Complete your trip

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

Direct flights to

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

Search flights from Portsmouth to Thailand by cabin class

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Portsmouth and Thailand flights

Browse other Portsmouth and Thailand flight options. Last updated on 21 August 2026.

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Fly to Thailand regions

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Top 10 airlines flying from Portsmouth to Thailand

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Can Cheapflights notify me if prices for flights from Portsmouth to Thailand become cheaper?

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Travel Smart

Cheapest flights from Portsmouth to Thailand
Explore the most affordable flight options available from Portsmouth to Thailand. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 August 2026.

Best flights from Portsmouth to Thailand
Discover carefully curated flight deals from Portsmouth to Thailand that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 August 2026.

Last-minute flights from Portsmouth to Thailand
Discover last-minute flight deals from Portsmouth to Thailand. Data last updated 21 August 2026 and is based on user searches.

One-way flights from Portsmouth to Thailand
Search for one-way flight options from Portsmouth to Thailand. Find affordable one-way fares based on user searches. Data last updated 21 August 2026.