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Cheap flights from Portsmouth to Bangkok from £469

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 24/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BKK
11 Jul — 18 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Portsmouth to Bangkok

Enter your travel dates to find the best prices.

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 11 June 2026.

Thu 3/917:20
SOU
-
BKK
1 stop34h 10m
KLM
Wed 30/912:05
BKK
-
SOU
1 stop26h 30m
KLM
Deal found 9/6£642
Tue 8/917:20
SOU
-
BKK
1 stop34h 10m
KLM
Mon 5/1012:05
BKK
-
SOU
1 stop26h 30m
KLM
Deal found 9/6£685

Find flight deals from Portsmouth to Bangkok

Keep the following information in mind while searching for Portsmouth to Bangkok flight deals. Data was last updated 11 June 2026.

Round-trip from

£642

One-way from

£469

Popular in

December

Cheapest in

June

Average price

£565
KLM
  • KLM
  • 3/9-30/9
  • 2 total stops
  • 60h 40m total
  • Portsmouth to Bangkok
Search Deals
Qatar Airways
  • Qatar Airways
  • 24/6
  • 2 total stops
  • 35h 25m total
  • Portsmouth to Bangkok
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£134 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (£42 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

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 11 June 2026.
Use the filters below to find and compare flights from Portsmouth to Bangkok 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

09:05-09:15

2 stops18h 10m

Bangkok Suvarnabhumi

Mon 5/10

12:05-16:50

1 stop34h 45m

£713

SouthamptonBangkok

SOU - BKK

SOUBKK

Southampton Eastleigh

Tue 17/11

09:20-19:25

2 stops27h 05m

Bangkok Suvarnabhumi

Mon 30/11

20:30-19:30

2 stops30h 00m

£792

SouthamptonBangkok

SOU - BKK

SOUBKK

Southampton Eastleigh

Thu 10/9

09:20-13:25

2 stops22h 05m

Bangkok Suvarnabhumi

Wed 30/9

02:30-19:30

2 stops23h 00m

£795

SouthamptonBangkok

SOU - BKK

SOUBKK

Southampton Eastleigh

Tue 1/9

20:00-13:25

2 stops35h 25m

Bangkok Suvarnabhumi

Mon 28/9

02:30-19:30

2 stops23h 00m

£795

SouthamptonBangkok

SOU - BKK

SOUBKK

Southampton Eastleigh

Thu 12/11

20:00-06:40

2 stops27h 40m

Bangkok Suvarnabhumi

Tue 24/11

20:30-19:30

2 stops30h 00m

£836

SouthamptonBangkok

SOU - BKK

SOUBKK

Southampton Eastleigh

Mon 13/7

20:00-07:15

2 stops29h 15m

Bangkok Suvarnabhumi

Fri 17/7

02:30-19:30

2 stops23h 00m

£843
Fastest return journey

SouthamptonBangkok

SOU - BKK

SOUBKK

Southampton Eastleigh

Wed 8/7

09:20-12:55

2 stops21h 35m

Bangkok Suvarnabhumi

Tue 28/7

02:30-19:30

2 stops23h 00m

£892

SouthamptonBangkok

SOU - BKK

SOUBKK

Southampton Eastleigh

Fri 10/7

20:00-19:25

2 stops41h 25m

Bangkok Suvarnabhumi

Sun 26/7

02:30-19:30

2 stops23h 00m

£996
Cheapest one-way

SouthamptonBangkok

SOU - BKK

SOUBKK

Southampton Eastleigh

Wed 24/6

20:00-13:25

2 stops35h 25m

£469

SouthamptonBangkok

SOU - BKK

SOUBKK

Southampton Eastleigh

Wed 17/6

20:00-12:55

2 stops34h 55m

£469

Flights are sorted by cheapest return flights first.

Deals found on 11/6

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

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 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 11 June 2026.

When flying from Portsmouth to Bangkok, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 10% versus a flight at midday.

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 11 June 2026.

The most flights from P0R to TH1 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).

How much does it cost for a return flight from Portsmouth to Bangkok?

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 11 June 2026.
See what other customers who have flown with KLM 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
1,527 reviews
Check prices

Comfort

7.7

Overall

7.8

Entertainment

7.2

Crew

8.4

Boarding

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
1,527 reviews
KLM
7.8
Good
1,527 reviews
Check prices

Comfort

7.7

Overall

7.8

Entertainment

7.2

Crew

8.4

Boarding

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 Bangkok. 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 Bangkok?

    A quick flight from Portsmouth to Bangkok can take about 18h 10m. KLM provides one of the quickest options available for as low as £713. The distance between Portsmouth and Bangkok is about 5995 mi. This flight may include one or multiple stops.

  • 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 (92%), EVA Air (91%), Air Canada (91%).

  • What are the cheapest flights from Portsmouth to Bangkok?

    Looking for the cheapest flight from Portsmouth to Bangkok? While on average our users pay £1,233, our data indicates the cheapest price to be £511. The most popular route (Southampton Eastleigh - Bangkok Suvarnabhumi), is priced around £642.

  • 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.

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 11 June 2026.
AirlineCheapestAverageFlexibilityOn-time
Turkmenistan AirlinesCheapest£273Average£560FlexibilityNo cancel feeOn-time63%
Search Turkmenistan Airlines flights
Hahn AirCheapest£275Average£667FlexibilityNo cancel feeOn-timeN/A
Search Hahn Air flights
Scandinavian AirlinesCheapest£284Average£684FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
Gulf AirCheapest£319Average£636FlexibilityNo cancel feeOn-time67%
Search Gulf Air flights
ITA AirwaysCheapest£367Average£549FlexibilityNo cancel feeOn-time81%
Search ITA Airways flights
Hainan AirlinesCheapest£372Average£420FlexibilityNo cancel feeOn-time61%
Search Hainan Airlines flights
Air ArabiaCheapest£394Average£634FlexibilityNo cancel feeOn-time79%
Search Air Arabia flights
Royal JordanianCheapest£410Average£659FlexibilityNo cancel feeOn-time61%
Search Royal Jordanian flights
CondorCheapest£427Average£547FlexibilityNo cancel feeOn-time76%
Search Condor flights
LufthansaCheapest£463Average£674FlexibilityNo 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 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.

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