Find flights
When to book
Airlines
FAQs

Cheap flights from Portsmouth to Bangkok 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 Bangkok

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

Round-trip from

£711

One-way from

£648

Popular in

August

Cheapest in

May

Average price

£729
Qatar Airways
  • Qatar Airways
  • 24/9-7/10
  • 4 total stops
  • 44h 45m total
  • Portsmouth to Bangkok
Search Deals
20/10
  • 20/10
  • 2 total stops
  • 21h 15m total
  • Portsmouth to Bangkok
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (£144 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease (£47 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 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 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

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 13 June 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

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

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

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 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 £718). 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 13 June 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 2 June 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 13 June 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).

Rainfall in Bangkok by month

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

In terms of precipitation, rainfall in Bangkok 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 Bangkok when rainfall is around 10.0 mm.

Temperature in Bangkok by month

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

If weather is an important factor for your trip to Bangkok, 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 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 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 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 (62%), EVA Air (59%), Air Canada (57%).

  • What are the cheapest flights from Portsmouth to Bangkok?

    Looking for the cheapest flight from Portsmouth to Bangkok? While on average our users pay £2,830, our data indicates the cheapest price to be £349. The most popular route (Southampton Eastleigh - Bangkok Suvarnabhumi), is priced around £631.

  • 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 £718). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Portsmouth to Bangkok

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Suvarnabhumi flights
Gatwick to Suvarnabhumi flights
London City to Suvarnabhumi flights
Stansted to Suvarnabhumi flights
Manchester to Suvarnabhumi flights
Luton to Suvarnabhumi flights
Birmingham to Suvarnabhumi flights
Heathrow to Phuket City flights
Gatwick to Phuket City flights
Stansted to Phuket City flights
London City to Phuket City flights
Heathrow to Don Mueang Intl flights
Edinburgh to Suvarnabhumi flights
Manchester to Don Mueang Intl flights
Manchester to Phuket City flights
Newcastle upon Tyne to Suvarnabhumi flights
Heathrow to Ko Samui flights
Gatwick to Ko Samui flights
Birmingham to Don Mueang Intl flights
London City to Ko Samui flights
Gatwick to Don Mueang Intl flights
Luton to Phuket City flights
Stansted to Ko Samui flights
Southampton to Suvarnabhumi flights
Heathrow to Chiang Mai flights
Heathrow to Krabi flights
Gatwick to Chiang Mai flights
Gatwick to Krabi flights
Birmingham to Phuket City flights
Bristol to Suvarnabhumi flights
Stansted to Chiang Mai flights
Stansted to Krabi flights
Leeds to Suvarnabhumi flights
London City to Chiang Mai flights
Newcastle upon Tyne to Phuket City flights
Manchester to Ko Samui flights
Edinburgh to Phuket City flights
London City to Krabi flights
Norwich to Suvarnabhumi flights
Darlington to Suvarnabhumi flights
Liverpool to Suvarnabhumi flights
Heathrow to Udon Thani flights
Manchester to Krabi flights
Southend to Suvarnabhumi flights
East Midlands to Suvarnabhumi flights
Luton to Ko Samui flights
Birmingham to Ko Samui flights
Newcastle upon Tyne to Don Mueang Intl flights
Edinburgh to Don Mueang Intl flights

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 13 June 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkmenistan AirlinesCheapest£287Average£543FlexibilityNo cancel feeOn-time63%
Search Turkmenistan Airlines flights
SAUDIACheapest£334Average£550FlexibilityNo cancel feeOn-time86%
Search SAUDIA flights
Hainan AirlinesCheapest£374Average£433FlexibilityNo cancel feeOn-time61%
Search Hainan Airlines 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
Turkish AirlinesCheapest£479Average£609FlexibilityNo cancel feeOn-time77%
Search Turkish Airlines flights
Air FranceCheapest£480Average£681FlexibilityNo cancel feeOn-time77%
Search Air France flights
KLMCheapest£480Average£762FlexibilityNo cancel feeOn-time75%
Search KLM flights
SWISSCheapest£481Average£741FlexibilityNo cancel feeOn-time79%
Search SWISS 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 Bangkok?

Cheapflights helps you search for flights from Portsmouth to Bangkok 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 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?

Of course! You can now track prices for flights from Portsmouth to Bangkok and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
©2025 Cheapflights