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Cheap flights from Portsmouth to Thailand from £420

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 9/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BKK
27 Jun — 4 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Portsmouth to Thailand

Enter your travel dates to find the best prices.

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 28 May 2026.

Thu 17/917:20
SOU
-
BKK
1 stop34h 10m
KLM
Wed 30/912:05
BKK
-
SOU
1 stop26h 30m
KLM
Deal found 27/5£548
Tue 8/917:20
SOU
-
BKK
2 stops33h 55m
KLM
Mon 5/1012:05
BKK
-
SOU
1 stop26h 30m
KLM
Deal found 25/5£602
Tue 16/620:00
SOU
-
BKK
2 stops34h 10m
Multiple Airlines
Wed 1/703:15
BKK
-
SOU
2 stops35h 25m
Multiple Airlines
Deal found 24/5£652
Sat 4/720:00
SOU
-
HKT
2 stops34h 05m
Multiple Airlines
Sat 11/715:45
HKT
-
SOU
2 stops31h 05m
Multiple Airlines
Deal found 23/5£659
Sun 6/909:15
SOU
-
USM
2 stops22h 30m
KLM
Sun 20/908:45
USM
-
SOU
2 stops29h 50m
KLM
Deal found 28/5£789
Sat 25/709:20
SOU
-
HKT
2 stops44h 45m
Multiple Airlines
Tue 25/809:25
HKT
-
SOU
2 stops28h 40m
Multiple Airlines
Deal found 25/5£815
Thu 19/1109:20
SOU
-
HKT
2 stops20h 35m
Qatar Airways
Sat 5/1200:50
HKT
-
SOU
2 stops25h 40m
Qatar Airways
Deal found 24/5£841
Fri 20/1120:00
SOU
-
HKT
2 stops26h 50m
Qatar Airways
Sat 5/1200:50
HKT
-
SOU
2 stops25h 40m
Qatar Airways
Deal found 24/5£867
Thu 19/1109:20
SOU
-
HKT
2 stops20h 35m
Qatar Airways
Wed 2/1200:50
HKT
-
SOU
2 stops25h 40m
Qatar Airways
Deal found 24/5£926
Thu 19/1109:20
SOU
-
HKT
2 stops20h 35m
Qatar Airways
Wed 2/1208:55
HKT
-
SOU
2 stops41h 35m
Qatar Airways
Deal found 24/5£928
Wed 23/908:55
SOU
-
HKT
2 stops27h 55m
Qatar Airways
Sun 27/920:30
HKT
-
SOU
2 stops29h 00m
Qatar Airways
Deal found 24/5£941
Fri 20/1120:00
SOU
-
HKT
2 stops26h 50m
Qatar Airways
Wed 2/1200:50
HKT
-
SOU
2 stops25h 40m
Qatar Airways
Deal found 24/5£953

Find flight deals from Portsmouth to Thailand

Keep the following information in mind while searching for Portsmouth to Thailand flight deals. Data was last updated 28 May 2026.

Round-trip from

£548

One-way from

£420

Popular in

December

Cheapest in

September

Average price

£545
KLM
  • KLM
  • 17/9-30/9
  • 2 total stops
  • 60h 40m total
  • Portsmouth to Thailand
Search Deals
KLM
  • KLM
  • 7/6
  • 2 total stops
  • 18h 00m total
  • Portsmouth to Thailand
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£27 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£14 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Portsmouth to Thailand that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 28 May 2026.
Use the filters below to find and compare flights from Portsmouth to Thailand that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SouthamptonBangkok

SOU - BKK

SOUBKK

Southampton Eastleigh

Tue 8/9

09:05-09:15

2 stops18h 10m

Bangkok Suvarnabhumi

Mon 5/10

11:25-16:50

2 stops35h 25m

£626

SouthamptonBangkok

SOU - BKK

SOUBKK

Southampton Eastleigh

Thu 6/8

17:20-23:50

2 stops24h 30m

Bangkok Suvarnabhumi

Tue 11/8

09:15-08:05

2 stops28h 50m

£765
Fastest return journey

SouthamptonBangkok

SOU - BKK

SOUBKK

Southampton Eastleigh

Tue 24/11

09:20-12:15

2 stops19h 55m

Bangkok Suvarnabhumi

Mon 14/12

02:00-19:30

2 stops24h 30m

£776

SouthamptonBangkok

SOU - BKK

SOUBKK

Southampton Eastleigh

Sun 20/9

09:20-13:25

2 stops22h 05m

Bangkok Suvarnabhumi

Wed 30/9

21:05-19:30

2 stops28h 25m

£810

SouthamptonBangkok

SOU - BKK

SOUBKK

Southampton Eastleigh

Mon 16/11

09:20-12:15

2 stops19h 55m

Bangkok Suvarnabhumi

Wed 2/12

02:00-19:30

2 stops24h 30m

£822

SouthamptonBangkok

SOU - BKK

SOUBKK

Southampton Eastleigh

Thu 25/6

20:00-12:55

2 stops34h 55m

Bangkok Suvarnabhumi

Wed 15/7

03:00-19:30

2 stops22h 30m

£824

SouthamptonBangkok

SOU - BKK

SOUBKK

Southampton Eastleigh

Wed 10/6

20:00-19:55

2 stops41h 55m

Bangkok Suvarnabhumi

Sun 21/6

20:00-19:30

2 stops29h 30m

£837

SouthamptonBangkok

SOU - BKK

SOUBKK

Southampton Eastleigh

Sat 21/11

09:20-12:15

2 stops19h 55m

Bangkok Suvarnabhumi

Wed 25/11

02:00-19:30

2 stops24h 30m

£849

SouthamptonBangkok

SOU - BKK

SOUBKK

Southampton Eastleigh

Mon 23/11

20:00-06:40

2 stops27h 40m

Bangkok Suvarnabhumi

Thu 3/12

02:00-19:30

2 stops24h 30m

£849

SouthamptonBangkok

SOU - BKK

SOUBKK

Southampton Eastleigh

Tue 17/11

20:00-06:40

2 stops27h 40m

Bangkok Suvarnabhumi

Sat 5/12

18:55-19:30

2 stops31h 35m

£849

Flights are sorted by cheapest return flights first.

Deals found on 26/5

Showing 1-10 of 47 resultsSorted by cheapest first
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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.
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

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 28 May 2026.

It’s optimal to fly from Portsmouth to Thailand in the morning. By choosing this option you can save up to 21% 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 28 May 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).

Reviews of airlines servicing Thailand

Get insights into the airlines that provide service to Thailand. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Thailand. Reviews last updated 28 May 2026.
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
1,525 reviews
Check prices

Crew

8.4

Food

7.3

Entertainment

7.2

Overall

7.8

Boarding

7.8

Comfort

7.7

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
KLM
7.8
Good
1,525 reviews
KLM
7.8
Good
1,525 reviews
Check prices

Crew

8.4

Food

7.3

Entertainment

7.2

Overall

7.8

Boarding

7.8

Comfort

7.7

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

Related info for your journey

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

  • How long is the flight from Portsmouth to Thailand?

    For as low as £626, KLM can have you in Thailand from Portsmouth in 18h 10m. 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 TAP AIR PORTUGAL (87%), Thai Airways (78%) or Air Canada (75%) 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 £509. On average you can expect to pay £1,238. The most popular route, (Southampton Eastleigh - Bangkok Suvarnabhumi), can usually be booked for £548.

  • 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

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Alternative routes for Portsmouth to Thailand

See prices for flight routes from nearby airports that may be better suited for you.
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Luton to Narita flights
Heathrow to Hyderabad flights
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Gatwick to Hong Kong flights
Heathrow to Taiwan Taoyuan Intl flights
Gatwick to Pu Dong flights

Top 10 airlines flying from Portsmouth to Thailand

Discover the top 10 airlines that operate flights from Portsmouth to Thailand. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 28 May 2026.
AirlineCheapestAverageFlexibilityOn-time
Bangkok AirwaysCheapest£114Average£142FlexibilityNo cancel feeOn-time74%
Search Bangkok Airways flights
Turkmenistan AirlinesCheapest£272Average£562FlexibilityNo cancel feeOn-time63%
Search Turkmenistan Airlines flights
Hahn AirCheapest£274Average£664FlexibilityNo cancel feeOn-timeN/A
Search Hahn Air flights
Scandinavian AirlinesCheapest£283Average£681FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
Gulf AirCheapest£318Average£635FlexibilityNo cancel feeOn-time67%
Search Gulf Air flights
ITA AirwaysCheapest£365Average£546FlexibilityNo cancel feeOn-time81%
Search ITA Airways flights
Hainan AirlinesCheapest£377Average£409FlexibilityNo cancel feeOn-time61%
Search Hainan Airlines flights
Air ArabiaCheapest£392Average£631FlexibilityNo cancel feeOn-time79%
Search Air Arabia flights
Royal JordanianCheapest£408Average£658FlexibilityNo cancel feeOn-time61%
Search Royal Jordanian flights
CondorCheapest£423Average£549FlexibilityNo cancel feeOn-time76%
Search Condor flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Portsmouth to Thailand?

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!

Can Cheapflights find flights from Portsmouth to Thailand with no change fees?

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

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