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Cheap flights from Portsmouth to Thailand from £400

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 15/8. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BKK
4 Jun — 11 Jun1
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 5 May 2026.

Tue 8/917:20
SOU
-
BKK
2 stops33h 55m
KLM
Mon 5/1012:05
BKK
-
SOU
1 stop34h 45m
KLM
Deal found 1/5£600
Thu 4/620:00
SOU
-
BKK
2 stops28h 45m
Multiple Airlines
Thu 11/609:20
BKK
-
SOU
2 stops29h 20m
Multiple Airlines
Deal found 5/5£605
Wed 6/520:00
SOU
-
BKK
2 stops28h 45m
Multiple Airlines
Wed 13/521:00
BKK
-
SOU
2 stops28h 30m
Multiple Airlines
Deal found 1/5£606
Sun 14/609:20
SOU
-
BKK
2 stops28h 20m
Multiple Airlines
Sun 21/609:15
BKK
-
SOU
2 stops29h 25m
Multiple Airlines
Deal found 2/5£607
Thu 7/520:00
SOU
-
BKK
2 stops28h 45m
Multiple Airlines
Thu 14/509:20
BKK
-
SOU
2 stops29h 20m
Multiple Airlines
Deal found 2/5£609
Sun 7/617:20
SOU
-
BKK
2 stops18h 50m
Multiple Airlines
Sun 28/609:15
BKK
-
SOU
2 stops29h 25m
Multiple Airlines
Deal found 2/5£618
Sat 13/609:20
SOU
-
HKT
2 stops27h 00m
Multiple Airlines
Sat 20/615:45
HKT
-
SOU
2 stops46h 55m
Multiple Airlines
Deal found 3/5£651
Sun 14/620:00
SOU
-
HKT
2 stops34h 05m
Multiple Airlines
Sat 20/602:25
HKT
-
SOU
2 stops36h 15m
Multiple Airlines
Deal found 1/5£722
Wed 17/620:00
SOU
-
HKT
2 stops34h 05m
Multiple Airlines
Tue 23/602:25
HKT
-
SOU
2 stops36h 15m
Multiple Airlines
Deal found 3/5£725
Fri 19/617:20
SOU
-
HKT
2 stops19h 05m
Multiple Airlines
Fri 26/609:25
HKT
-
SOU
2 stops37h 25m
Multiple Airlines
Deal found 5/5£786
Wed 20/509:20
SOU
-
HKT
2 stops22h 55m
Multiple Airlines
Wed 10/620:30
HKT
-
SOU
2 stops26h 20m
Multiple Airlines
Deal found 5/5£814
Wed 3/609:20
SOU
-
HKT
2 stops22h 40m
Multiple Airlines
Wed 10/620:30
HKT
-
SOU
2 stops26h 20m
Multiple Airlines
Deal found 1/5£861

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 5 May 2026.

Round-trip from

£600

One-way from

£400

Popular in

December

Cheapest in

May

Average price

£524
KLM
  • KLM
  • 8/9-5/10
  • 3 total stops
  • 68h 40m total
  • Portsmouth to Thailand
Search Deals
15/8
  • 15/8
  • 2 total stops
  • 41h 40m total
  • Portsmouth to Thailand
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£25 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% 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 5 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

17:20-09:15

2 stops33h 55m

Bangkok Suvarnabhumi

Mon 5/10

12:05-16:50

1 stop34h 45m

£602

SouthamptonPhuket City

SOU - HKT

SOUHKT

Southampton Eastleigh

Sat 13/6

09:20-18:20

2 stops27h 00m

Phuket City

Sat 20/6

15:45-08:40

2 stops46h 55m

£651

SouthamptonPhuket City

SOU - HKT

SOUHKT

Southampton Eastleigh

Sun 14/6

20:00-12:05

2 stops34h 05m

Phuket City

Sat 20/6

02:25-08:40

2 stops36h 15m

£722

SouthamptonPhuket City

SOU - HKT

SOUHKT

Southampton Eastleigh

Wed 17/6

20:00-12:05

2 stops34h 05m

Phuket City

Tue 23/6

02:25-08:40

2 stops36h 15m

£725

SouthamptonPhuket City

SOU - HKT

SOUHKT

Southampton Eastleigh

Fri 19/6

17:20-18:25

2 stops19h 05m

Phuket City

Fri 26/6

09:25-16:50

2 stops37h 25m

£786

SouthamptonPhuket City

SOU - HKT

SOUHKT

Southampton Eastleigh

Wed 3/6

09:20-14:00

2 stops22h 40m

Phuket City

Wed 10/6

20:30-16:50

2 stops26h 20m

£814

SouthamptonPhuket City

SOU - HKT

SOUHKT

Southampton Eastleigh

Wed 20/5

09:20-14:15

2 stops22h 55m

Phuket City

Wed 10/6

20:30-16:50

2 stops26h 20m

£814

SouthamptonBangkok

SOU - BKK

SOUBKK

Southampton Eastleigh

Tue 2/6

09:20-14:15

2 stops22h 55m

Bangkok Suvarnabhumi

Mon 22/6

02:30-19:30

2 stops23h 00m

£842

SouthamptonBangkok

SOU - BKK

SOUBKK

Southampton Eastleigh

Sat 20/6

20:00-06:20

2 stops28h 20m

Bangkok Suvarnabhumi

Mon 20/7

03:00-19:30

2 stops22h 30m

£853
Fastest return journey

SouthamptonBangkok

SOU - BKK

SOUBKK

Southampton Eastleigh

Wed 17/6

09:20-12:55

2 stops21h 35m

Bangkok Suvarnabhumi

Fri 17/7

03:00-19:30

2 stops22h 30m

£853

Flights are sorted by cheapest return flights first.

Deals found on 3/5

Showing 1-10 of 34 resultsSorted by cheapest first
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4

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 5 May 2026.

It’s optimal to fly from Portsmouth to Thailand in the morning. By choosing this option you can save up to 19% 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 5 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 5 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
1,511 reviews
Check prices

Boarding

7.8

Entertainment

7.2

Crew

8.4

Comfort

7.7

Overall

7.8

Food

7.3

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
1,511 reviews
KLM
7.8
Good
1,511 reviews
Check prices

Boarding

7.8

Entertainment

7.2

Crew

8.4

Comfort

7.7

Overall

7.8

Food

7.3

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 £842, KLM can have you in Thailand from Portsmouth in 22h 55m. 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 Thai Airways (78%), Air Canada (75%) or EVA Air (73%) 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 £498. On average you can expect to pay £1,022. The most popular route, (Southampton Eastleigh - Bangkok Suvarnabhumi), can usually be booked for £602.

  • 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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Heathrow to Hyderabad flights
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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 5 May 2026.
AirlineCheapestAverageFlexibilityOn-time
Bangkok AirwaysCheapest£113Average£141FlexibilityNo cancel feeOn-time74%
Search Bangkok Airways flights
Turkmenistan AirlinesCheapest£270Average£558FlexibilityNo cancel feeOn-time63%
Search Turkmenistan Airlines flights
Hahn AirCheapest£271Average£658FlexibilityNo cancel feeOn-timeN/A
Search Hahn Air flights
Scandinavian AirlinesCheapest£280Average£633FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
ITA AirwaysCheapest£362Average£528FlexibilityNo cancel feeOn-time81%
Search ITA Airways flights
Hainan AirlinesCheapest£371Average£401FlexibilityNo cancel feeOn-time61%
Search Hainan Airlines flights
Air ArabiaCheapest£389Average£625FlexibilityNo cancel feeOn-time79%
Search Air Arabia flights
Royal JordanianCheapest£404Average£680FlexibilityNo cancel feeOn-time61%
Search Royal Jordanian flights
CondorCheapest£420Average£620FlexibilityNo cancel feeOn-time76%
Search Condor flights
Gulf AirCheapest£456Average£634FlexibilityNo cancel feeOn-time67%
Search Gulf Air 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?

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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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