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Cheap flights from Portsmouth to Thailand from £435

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 2/3. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BKK
23 Mar — 30 Mar1
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 21 February 2026.

Mon 1/619:20
SOU
-
BKK
2 stops46h 45m
Multiple Airlines
Wed 17/601:50
BKK
-
SOU
2 stops36h 55m
Multiple Airlines
Deal found 20/2£557
Tue 8/917:20
SOU
-
BKK
1 stop34h 10m
KLM
Mon 5/1012:05
BKK
-
SOU
1 stop34h 45m
KLM
Deal found 21/2£578
Mon 1/617:20
SOU
-
BKK
1 stop34h 10m
KLM
Thu 18/612:05
BKK
-
SOU
1 stop26h 30m
KLM
Deal found 20/2£586
Sun 15/1109:30
SOU
-
HKT
2 stops41h 20m
KLM
Fri 4/1207:45
HKT
-
SOU
2 stops32h 05m
KLM
Deal found 18/2£673
Fri 1/520:00
SOU
-
HKT
2 stops45h 40m
Multiple Airlines
Fri 15/502:25
HKT
-
SOU
2 stops36h 10m
Multiple Airlines
Deal found 21/2£735
Wed 8/409:05
SOU
-
HKT
2 stops27h 20m
Multiple Airlines
Tue 14/409:25
HKT
-
SOU
2 stops29h 10m
Multiple Airlines
Deal found 17/2£791
Tue 10/316:05
SOU
-
HKT
3 stops23h 25m
Multiple Airlines
Wed 18/317:05
HKT
-
SOU
3 stops27h 30m
Multiple Airlines
Deal found 19/2£795
Tue 10/308:50
SOU
-
HKT
2 stops25h 45m
KLM
Wed 18/318:20
HKT
-
SOU
2 stops21h 00m
KLM
Deal found 19/2£808
Mon 6/409:10
SOU
-
HKT
2 stops32h 30m
Multiple Airlines
Mon 13/408:55
HKT
-
SOU
3 stops37h 55m
Multiple Airlines
Deal found 20/2£828
Thu 2/409:05
SOU
-
USM
3 stops29h 20m
Multiple Airlines
Fri 17/418:15
USM
-
SOU
3 stops44h 30m
Multiple Airlines
Deal found 17/2£1,117
Sun 8/309:30
SOU
-
USM
3 stops28h 20m
Qatar Airways
Mon 16/311:40
USM
-
SOU
3 stops34h 55m
Qatar Airways
Deal found 18/2£1,214
Sat 30/509:10
SOU
-
USM
3 stops24h 35m
Qatar Airways
Sat 27/621:00
USM
-
SOU
3 stops28h 30m
Qatar Airways
Deal found 20/2£1,564

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 21 February 2026.

Round-trip from

£557

One-way from

£435

Popular in

July

Cheapest in

May

Average price

£618
1/6-17/6
  • 1/6-17/6
  • 4 total stops
  • 83h 40m total
  • Portsmouth to Thailand
Search Deals
Qatar Airways
  • Qatar Airways
  • 2/3
  • 2 total stops
  • 39h 45m total
  • Portsmouth to Thailand
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£62 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 February 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 21 February 2026.
Use the filters below to find and compare flights from Portsmouth to Thailand that are best for you.

Fly from

Portsmouth

Fly to

Thailand

Route

Depart

Return

Price

SouthamptonBangkok

SOU - BKK

SOUBKK

Southampton Eastleigh

Wed 1/4

20:00-06:15

2 stops28h 15m

Bangkok Suvarnabhumi

Wed 29/4

03:15-08:40

2 stops35h 25m

£782

SouthamptonPhuket City

SOU - HKT

SOUHKT

Southampton Eastleigh

Wed 8/4

09:05-18:25

2 stops27h 20m

Phuket City

Tue 14/4

09:25-08:35

2 stops29h 10m

£791

SouthamptonPhuket City

SOU - HKT

SOUHKT

Southampton Eastleigh

Tue 10/3

16:05-23:35

2 stops24h 30m

Phuket City

Wed 18/3

11:30-13:35

3 stops33h 05m

£812

SouthamptonBangkok

SOU - BKK

SOUBKK

Southampton Eastleigh

Thu 13/8

18:05-09:30

1 stop33h 25m

Bangkok Suvarnabhumi

Thu 3/9

11:25-08:35

2 stops27h 10m

£848

SouthamptonBangkok

SOU - BKK

SOUBKK

Southampton Eastleigh

Thu 5/3

20:10-12:15

2 stops33h 05m

Bangkok Suvarnabhumi

Thu 19/3

09:55-19:40

2 stops40h 45m

£857

SouthamptonBangkok

SOU - BKK

SOUBKK

Southampton Eastleigh

Tue 3/3

12:25-19:25

2 stops24h 00m

Bangkok Suvarnabhumi

Mon 23/3

02:00-15:35

2 stops44h 35m

£874

SouthamptonPhuket City

SOU - HKT

SOUHKT

Southampton Eastleigh

Fri 1/5

17:20-07:35

3 stops32h 15m

Phuket City

Fri 15/5

02:25-08:35

2 stops36h 10m

£890

SouthamptonBangkok

SOU - BKK

SOUBKK

Southampton Eastleigh

Mon 23/3

20:10-12:15

2 stops33h 05m

Bangkok Suvarnabhumi

Fri 15/5

19:40-09:45

2 stops20h 05m

£896

SouthamptonBangkok

SOU - BKK

SOUBKK

Southampton Eastleigh

Tue 24/3

12:25-19:25

2 stops24h 00m

Bangkok Suvarnabhumi

Fri 15/5

19:40-19:30

2 stops29h 50m

£990

SouthamptonBangkok

SOU - BKK

SOUBKK

Southampton Eastleigh

Mon 23/3

20:10-13:05

2 stops33h 55m

Bangkok Suvarnabhumi

Fri 15/5

19:40-19:30

2 stops29h 50m

£990

Flights are sorted by cheapest return flights first.

Deals found on 18/2

Showing 1-10 of 47 results
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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 month to book a flight from Portsmouth to Thailand?

Currently, September is the cheapest month in which you can book a flight from Portsmouth to Thailand (average of £176). Flying from Portsmouth to Thailand in August is currently the most expensive (average of £514). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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 February 2026.

It’s optimal to fly from Portsmouth to Thailand in the afternoon. By choosing this option you can save up to 33% on the cost of your flight, compared to a flight in the evening.

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 21 February 2026.

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

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 February 2026.

The most flights from P0R to TH0 are scheduled on a Monday (7 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (7 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 21 February 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
7.7
Good
1,457 reviews
Check prices

Food

7.3

Entertainment

7.1

Comfort

7.6

Boarding

7.8

Crew

8.4

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
KLM
7.7
Good
1,457 reviews
KLM
7.7
Good
1,457 reviews
Check prices

Food

7.3

Entertainment

7.1

Comfort

7.6

Boarding

7.8

Crew

8.4

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas

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 £857, KLM can have you in Thailand from Portsmouth in 33h 05m. 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 (86%), EVA Air (84%) or Air Canada (83%) 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 £453. On average you can expect to pay £2,339. The most popular route, (Southampton Eastleigh - Bangkok Suvarnabhumi), can usually be booked for £586.

  • 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.

  • What is the cheapest month to book a flight from Portsmouth to Thailand?

    Currently, September is the cheapest month in which you can book a flight from Portsmouth to Thailand (average of £176). Flying from Portsmouth to Thailand in August is currently the most expensive (average of £514). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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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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 21 February 2026.
AirlineCheapestAverageFlexibilityOn-time
Bangkok AirwaysCheapest£113Average£142FlexibilityNo cancel feeOn-time74%
Search Bangkok Airways flights
Turkmenistan AirlinesCheapest£268Average£555FlexibilityNo cancel feeOn-time63%
Search Turkmenistan Airlines flights
Hahn AirCheapest£273Average£654FlexibilityNo cancel feeOn-timeN/A
Search Hahn Air flights
Scandinavian AirlinesCheapest£282Average£683FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
China AirlinesCheapest£338Average£698FlexibilityNo cancel feeOn-time70%
Search China Airlines flights
ITA AirwaysCheapest£364Average£554FlexibilityNo cancel feeOn-time81%
Search ITA Airways flights
Royal JordanianCheapest£407Average£690FlexibilityNo cancel feeOn-time61%
Search Royal Jordanian flights
KLMCheapest£426Average£819FlexibilityNo cancel feeOn-time75%
Search KLM flights
CondorCheapest£433Average£652FlexibilityNo cancel feeOn-time76%
Search Condor flights
LufthansaCheapest£465Average£702FlexibilityNo cancel feeOn-time76%
Search Lufthansa 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.

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

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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