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Cheap flights from Portsmouth to Bangkok from £358

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 31/10. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BKK
9 Jul — 16 Jul1
1 adult

Cheap flight deals from Portsmouth to Bangkok

Keep the following information in mind while searching for Portsmouth to Bangkok flight deals. Data was last updated 4 July 2025.

Round-trip from

£640

One-way from

£358

Popular in

August

Cheapest in

May

Average price

£927
KLM
  • KLM
  • 30/9-10/10
  • 3 total stops
  • 60h 20m total
  • Portsmouth to Bangkok
Search Deals
31/10
  • 31/10
  • 3 total stops
  • 53h 10m total
  • Portsmouth to Bangkok
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (£142 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease (£46 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

Find flight deals from Portsmouth to Bangkok

Cheapest flights from Portsmouth to Bangkok
Explore the most affordable flight options available from Portsmouth to Bangkok. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 July 2025.

Tue 30/917:35SOU - BKK
2 stops33h 40mKLM
Fri 10/1012:05BKK - SOU
1 stop26h 40mKLM
Deal found 2/7£640
Thu 2/1020:00SOU - BKK
2 stops28h 30mMultiple Airlines
Thu 9/1010:05BKK - SOU
2 stops39h 25mMultiple Airlines
Deal found 2/7£682
Wed 15/1009:10SOU - BKK
2 stops22h 15mQatar Airways
Tue 28/1002:00BKK - SOU
2 stops24h 40mQatar Airways
Deal found 3/7£710

Cheapflights Fare Finder

Customise your flight search to find flights from Portsmouth to Bangkok 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 4 July 2025.
Use the filters below to find and compare flights from Portsmouth to Bangkok that are best for you.

Fly from

Portsmouth

Fly to

Bangkok

Route

Depart

Return

Price

SouthamptonBangkok

SOU - BKK

SOUBKK

Southampton Eastleigh

Tue 30/9

17:35-09:15

2 stops33h 40m

Bangkok Suvarnabhumi

Fri 10/10

12:05-08:45

1 stop26h 40m

£640

SouthamptonBangkok

SOU - BKK

SOUBKK

Southampton Eastleigh

Thu 2/10

20:00-06:30

2 stops28h 30m

Bangkok Suvarnabhumi

Thu 9/10

10:05-19:30

2 stops39h 25m

£682

SouthamptonBangkok

SOU - BKK

SOUBKK

Southampton Eastleigh

Wed 15/10

09:10-13:25

2 stops22h 15m

Bangkok Suvarnabhumi

Wed 29/10

18:55-19:40

2 stops31h 45m

£710

SouthamptonBangkok

SOU - BKK

SOUBKK

Southampton Eastleigh

Fri 31/10

14:25-02:35

3 stops53h 10m

£358

SouthamptonBangkok

SOU - BKK

SOUBKK

Southampton Eastleigh

Tue 2/12

20:10-05:55

2 stops26h 45m

£638

SouthamptonBangkok

SOU - BKK

SOUBKK

Southampton Eastleigh

Wed 1/10

17:35-09:30

1 stop33h 55m

£717

Flights are sorted by cheapest return flights first.

Deals found on 2/7

Best time to book a flight from Portsmouth to Bangkok

Have a flexible travel schedule? Discover the best time to fly to Bangkok 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 Bangkok

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

Currently, May is the cheapest month in which you can book a flight from Portsmouth to Bangkok (average of £717). Flying from Portsmouth to Bangkok 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 BKK?

Find hourly flight availability from Portsmouth to Bangkok. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 4 July 2025.

When flying from Portsmouth to Bangkok, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

Use this chart to determine the cheapest time to fly return from Portsmouth to Bangkok. Price data was last updated on 16 December 2024.

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

Weekly flight availability from Portsmouth to Bangkok

Explore weekly flight availability from Portsmouth to Bangkok. 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 4 July 2025.

The most flights from P0R to TH1 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 Bangkok

Get insights into the airlines that provide service to Bangkok. 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 Bangkok. Reviews last updated 4 July 2025.
See what other customers who have flown with KLM and Qatar Airways from Portsmouth to Bangkok have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,367 reviews
Check prices

Overall

7.8

Crew

8.4

Entertainment

7.1

Boarding

7.8

Food

7.2

Comfort

7.7

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
KLM
7.8
Good
1,367 reviews
KLM
7.8
Good
1,367 reviews
Check prices

Overall

7.8

Crew

8.4

Entertainment

7.1

Boarding

7.8

Food

7.2

Comfort

7.7

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
Qatar Airways
7.4
Good
3,588 reviews
KLM
7.8
Good
1,367 reviews
Check prices

Overall

7.8

Crew

8.4

Entertainment

7.1

Boarding

7.8

Food

7.2

Comfort

7.7

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Related info for your journey

Find useful and relevant information for your journey from Portsmouth to Bangkok. 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 reliable airlines from Portsmouth to Bangkok?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Portsmouth to Bangkok on time: Thai Airways (71%), EVA Air (70%), Air Canada (67%).

  • What are the cheapest flights from Portsmouth to Bangkok?

    Looking for the cheapest flight from Portsmouth to Bangkok? While on average our users pay £2,535, our data indicates the cheapest price to be £354. The most popular route (Southampton Eastleigh - Bangkok Suvarnabhumi), is priced around £682.

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

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

  • How can I find direct flights from Portsmouth to Bangkok?

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

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

    Yes. Cheapflights offers flight deals from Portsmouth to Bangkok 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 Bangkok?

    Currently, May is the cheapest month in which you can book a flight from Portsmouth to Bangkok (average of £717). Flying from Portsmouth to Bangkok 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 Bangkok

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 Bangkok

Discover the top 10 airlines that operate flights from Portsmouth to Bangkok. 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 4 July 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkmenistan AirlinesCheapest£286Average£546FlexibilityNo cancel feeOn-time63%
Search Turkmenistan Airlines flights
SAUDIACheapest£332Average£547FlexibilityNo cancel feeOn-time86%
Search SAUDIA flights
Hainan AirlinesCheapest£372Average£430FlexibilityNo cancel feeOn-time61%
Search Hainan Airlines flights
Norse Atlantic UKCheapest£448Average£559FlexibilityNo cancel feeOn-timeN/A
Search Norse Atlantic UK flights
Royal JordanianCheapest£452Average£631FlexibilityNo cancel feeOn-time61%
Search Royal Jordanian flights
Royal Brunei AirlinesCheapest£461Average£535FlexibilityNo cancel feeOn-time84%
Search Royal Brunei Airlines flights
Turkish AirlinesCheapest£476Average£606FlexibilityNo cancel feeOn-time77%
Search Turkish Airlines flights
SWISSCheapest£476Average£733FlexibilityNo cancel feeOn-time79%
Search SWISS flights
LufthansaCheapest£478Average£930FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
KLMCheapest£478Average£763FlexibilityNo cancel feeOn-time75%
Search KLM flights

Fly with Cheapflights

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

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

Millions of users choose and trust Cheapflights to book the best flight deals from Portsmouth to Bangkok for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from Portsmouth to Bangkok, users can toggle the no change fees filter when performing a flight search.

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

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