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Cheap flights from Portsmouth to Thailand from £648

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 20/10. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BKK
18 Jun — 25 Jun1
1 adult

Cheap flight deals from Portsmouth to Thailand

Keep the following information in mind while searching for Portsmouth to Thailand flight deals. Data was last updated 13 June 2025.

Round-trip from

£711

One-way from

£648

Popular in

December

Cheapest in

May

Average price

£563
Qatar Airways
  • Qatar Airways
  • 24/9-7/10
  • 4 total stops
  • 44h 45m total
  • Portsmouth to Thailand
Search Deals
20/10
  • 20/10
  • 2 total stops
  • 21h 15m total
  • Portsmouth to Thailand
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£42 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£17 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2025
Search Deals

Find flight deals from Portsmouth to Thailand

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 13 June 2025.

Mon 16/617:35SOU - BKK
2 stops33h 40mKLM
Mon 23/611:35BKK - SOU
2 stops36h 15mKLM
Deal found 11/6£658
Wed 24/909:10SOU - BKK
2 stops21h 45mMultiple Airlines
Tue 7/1002:30BKK - SOU
2 stops23h 00mMultiple Airlines
Deal found 12/6£711
Sun 5/1009:10SOU - BKK
2 stops22h 15mQatar Airways
Wed 15/1021:05BKK - SOU
2 stops28h 25mQatar Airways
Deal found 11/6£718
Sun 9/1109:30SOU - HKT
2 stops26h 25mQatar Airways
Thu 27/1108:20HKT - SOU
2 stops38h 15mQatar Airways
Deal found 12/6£973
Sat 26/709:40SOU - HKT
3 stops27h 50mMultiple Airlines
Sat 2/822:50HKT - SOU
2 stops22h 10mMultiple Airlines
Deal found 11/6£1,040

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 13 June 2025.
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 24/9

09:10-12:55

2 stops21h 45m

Bangkok Suvarnabhumi

Tue 7/10

02:30-19:30

2 stops23h 00m

£711

SouthamptonBangkok

SOU - BKK

SOUBKK

Southampton Eastleigh

Sun 5/10

09:10-13:25

2 stops22h 15m

Bangkok Suvarnabhumi

Wed 15/10

21:05-19:30

2 stops28h 25m

£718

SouthamptonBangkok

SOU - BKK

SOUBKK

Southampton Eastleigh

Thu 18/9

17:35-09:30

1 stop33h 55m

Bangkok Suvarnabhumi

Fri 3/10

12:05-08:45

1 stop26h 40m

£814

SouthamptonPhuket City

SOU - HKT

SOUHKT

Southampton Eastleigh

Sun 9/11

09:30-18:55

2 stops26h 25m

Phuket City

Thu 27/11

08:20-15:35

2 stops38h 15m

£973

SouthamptonPhuket City

SOU - HKT

SOUHKT

Southampton Eastleigh

Sat 26/7

09:40-19:30

3 stops27h 50m

Phuket City

Sat 2/8

22:50-15:00

2 stops22h 10m

£1,040

SouthamptonBangkok

SOU - BKK

SOUBKK

Southampton Eastleigh

Mon 20/10

09:40-12:55

2 stops21h 15m

£648

SouthamptonBangkok

SOU - BKK

SOUBKK

Southampton Eastleigh

Sun 26/10

09:30-12:05

2 stops19h 35m

£654

SouthamptonPhuket City

SOU - HKT

SOUHKT

Southampton Eastleigh

Mon 4/8

09:40-18:50

2 stops27h 10m

£684

SouthamptonBangkok

SOU - BKK

SOUBKK

Southampton Eastleigh

Thu 19/6

17:35-09:30

1 stop33h 55m

£729

Flights are sorted by cheapest return flights first.

Deals found on 11/6

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, May is the cheapest month in which you can book a flight from Portsmouth to Thailand (average of £718). Flying from Portsmouth to Thailand in December is currently the most expensive (average of £1,123). 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 13 June 2025.

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

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 13 June 2025.

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).

Rainfall in Thailand by month

Plan your trip to Thailand by taking into account the average rainfall totals by month.

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.

Temperature in Thailand by month

Plan your trip to Thailand by taking into account the average temperature totals by month.

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).

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 13 June 2025.
KLM
7.8
Good
1,358 reviews
Check prices

Boarding

7.8

Food

7.2

Crew

8.4

Comfort

7.7

Overall

7.8

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
KLM
7.8
Good
1,358 reviews
KLM
7.8
Good
1,358 reviews
Check prices

Boarding

7.8

Food

7.2

Crew

8.4

Comfort

7.7

Overall

7.8

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
Qatar Airways
7.4
Good
3,584 reviews
KLM
7.8
Good
1,358 reviews
Check prices

Boarding

7.8

Food

7.2

Crew

8.4

Comfort

7.7

Overall

7.8

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.

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.

  • 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 (62%), EVA Air (59%) or Air Canada (57%) 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 £349. On average you can expect to pay £2,830. The most popular route, (Southampton Eastleigh - Bangkok Suvarnabhumi), can usually be booked for £631.

  • 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, May is the cheapest month in which you can book a flight from Portsmouth to Thailand (average of £718). Flying from Portsmouth to Thailand in December is currently the most expensive (average of £1,123). 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 13 June 2025.
AirlineCheapestAverageFlexibilityOn-time
Bangkok AirwaysCheapest£107Average£143FlexibilityNo cancel feeOn-time74%
Search Bangkok Airways flights
Turkmenistan AirlinesCheapest£287Average£543FlexibilityNo cancel feeOn-time63%
Search Turkmenistan Airlines flights
Hainan AirlinesCheapest£374Average£433FlexibilityNo cancel feeOn-time61%
Search Hainan Airlines flights
KLMCheapest£422Average£774FlexibilityNo cancel feeOn-time75%
Search KLM flights
Norse Atlantic UKCheapest£450Average£559FlexibilityNo cancel feeOn-timeN/A
Search Norse Atlantic UK flights
Royal JordanianCheapest£454Average£624FlexibilityNo cancel feeOn-time61%
Search Royal Jordanian flights
Royal Brunei AirlinesCheapest£463Average£537FlexibilityNo cancel feeOn-time84%
Search Royal Brunei Airlines flights
Air FranceCheapest£480Average£706FlexibilityNo cancel feeOn-time77%
Search Air France flights
SWISSCheapest£481Average£777FlexibilityNo cancel feeOn-time79%
Search SWISS flights
ITA AirwaysCheapest£488Average£569FlexibilityNo cancel feeOn-time81%
Search ITA Airways flights

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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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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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