Find flights
When to book
Airlines
FAQs

Cheap flights from Portsmouth to Bangkok from £313

LHR — BKK
11 Oct — 18 Oct1
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

Wed 16/909:15 -
1 stop18h 15m
Wed 23/912:05 -
1 stop26h 30m
Deal found 11/9£562
Tue 8/909:05 -
1 stop18h 25m
Mon 5/1012:05 -
1 stop34h 45m
Deal found 7/9£585
Mon 12/1020:40 -
2 stops28h 05m
Mon 19/1009:15 -
2 stops29h 25m
Deal found 11/9£618
Mon 14/917:20 -
1 stop34h 10m
Sun 20/912:05 -
1 stop26h 30m
Deal found 9/9£660
Mon 14/920:00 -
2 stops28h 20m
Sun 20/915:55 -
2 stops57h 35m
Deal found 9/9£662
Tue 6/1009:05 -
1 stop18h 25m
Tue 13/1012:05 -
1 stop26h 40m
Deal found 8/9£678
Tue 6/1020:00 -
2 stops29h 35m
Tue 13/1009:15 -
2 stops28h 50m
Deal found 8/9£697

Find flight deals from Portsmouth to Bangkok

Round-trip from

£618

One-way from

£313

Popular in

December

Cheapest in

June

Average price

£643
12/10-19/10
  • 12/10-19/10
  • 4 total stops
  • 57h 30m total
  • Portsmouth to Bangkok
Search Deals
26/10-31/12
  • 26/10-31/12
  • 3 total stops
  • 42h 55m total
  • Portsmouth to Bangkok
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£124 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (£41 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2026
Search Deals

Cheapflights Fare Finder

 
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 Southampton Eastleigh - BKK Bangkok Suvarnabhumi

SOUBKK

Southampton Eastleigh

Mon 26/10

12:25-14:20

3 stops42h 55m

Bangkok Suvarnabhumi

Wed 31/12

00:00-18:00

Nonstop0h 00m

£313
Fastest return journey

SouthamptonBangkok

SOU Southampton Eastleigh - BKK Bangkok Suvarnabhumi

SOUBKK

Southampton Eastleigh

Wed 18/11

09:20-13:05

2 stops20h 45m

Bangkok Suvarnabhumi

Wed 31/12

00:00-18:00

Nonstop0h 00m

£471

SouthamptonBangkok

SOU Southampton Eastleigh - BKK Bangkok Suvarnabhumi

SOUBKK

Southampton Eastleigh

Mon 19/10

09:20-14:25

2 stops23h 05m

Bangkok Suvarnabhumi

Wed 31/12

00:00-18:00

Nonstop0h 00m

£471

SouthamptonBangkok

SOU Southampton Eastleigh - BKK Bangkok Suvarnabhumi

SOUBKK

Southampton Eastleigh

Tue 20/10

20:00-14:25

2 stops36h 25m

Bangkok Suvarnabhumi

Wed 31/12

00:00-18:00

Nonstop0h 00m

£472

SouthamptonBangkok

SOU Southampton Eastleigh - BKK Bangkok Suvarnabhumi

SOUBKK

Southampton Eastleigh

Sat 31/10

09:20-19:25

2 stops27h 05m

Bangkok Suvarnabhumi

Wed 31/12

00:00-18:00

Nonstop0h 00m

£482

SouthamptonBangkok

SOU Southampton Eastleigh - BKK Bangkok Suvarnabhumi

SOUBKK

Southampton Eastleigh

Fri 16/10

20:00-14:25

2 stops36h 25m

Bangkok Suvarnabhumi

Wed 31/12

00:00-18:00

Nonstop0h 00m

£483

SouthamptonBangkok

SOU Southampton Eastleigh - BKK Bangkok Suvarnabhumi

SOUBKK

Southampton Eastleigh

Sun 6/12

09:20-19:25

2 stops27h 05m

Bangkok Suvarnabhumi

Wed 31/12

00:00-18:00

Nonstop0h 00m

£490

SouthamptonBangkok

SOU Southampton Eastleigh - BKK Bangkok Suvarnabhumi

SOUBKK

Southampton Eastleigh

Wed 21/10

09:20-14:25

2 stops23h 05m

Bangkok Suvarnabhumi

Wed 31/12

00:00-18:00

Nonstop0h 00m

£537

SouthamptonBangkok

SOU Southampton Eastleigh - BKK Bangkok Suvarnabhumi

SOUBKK

Southampton Eastleigh

Tue 6/10

09:05-09:30

1 stop18h 25m

Bangkok Suvarnabhumi

Tue 13/10

11:25-16:50

2 stops35h 25m

£774

SouthamptonBangkok

SOU Southampton Eastleigh - BKK Bangkok Suvarnabhumi

SOUBKK

Southampton Eastleigh

Wed 11/11

20:00-06:40

2 stops27h 40m

Bangkok Suvarnabhumi

Tue 24/11

02:00-19:30

2 stops24h 30m

£795

Flights are sorted by cheapest return flights first.

Deals found on 11/9

Showing 1-10 of 20 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

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?

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 at midday, which can drop the price by up to 64% versus a flight in the morning.

Weekly flight availability from Portsmouth to Bangkok

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?

Airfare is typical for this route at the moment.
Portsmouth to Bangkok flights typically cost between £551 and £702 in October.
The cheapest return price found within the last 5 days was £618 on Multiple Airlines (12 Oct–19 Oct).

Reviews of airlines servicing Bangkok

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
1,576 reviews
Check prices

Comfort

7.7

Overall

7.8

Food

7.3

Boarding

7.8

Crew

8.4

Entertainment

7.2

Reviews

1 / 20
8.0
Excellent

Meghana,Aug 2026

QRO - ATL

It was a good one. They were very friendly and helpful
KLM
7.8
Good
1,576 reviews
KLM
7.8
Good
1,576 reviews
Check prices

Comfort

7.7

Overall

7.8

Food

7.3

Boarding

7.8

Crew

8.4

Entertainment

7.2

Reviews

1 / 20
8.0
Excellent

Meghana,Aug 2026

QRO - ATL

It was a good one. They were very friendly and helpful

Related info for your journey

  • How long is the flight from Portsmouth to Bangkok?

    A quick flight from Portsmouth to Bangkok can take about 18h 25m. KLM provides one of the quickest options available for as low as £774. 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 (84%), EVA Air (84%), Air Canada (82%).

  • What are the cheapest flights from Portsmouth to Bangkok?

    Looking for the cheapest flight from Portsmouth to Bangkok? While on average our users pay £1,690, our data indicates the cheapest price to be £479. The most popular route (Southampton Eastleigh - Bangkok Suvarnabhumi), is priced around £717.

  • 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

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Portsmouth to Bangkok

Heathrow to Suvarnabhumi flights
Gatwick to Suvarnabhumi flights
Stansted to Suvarnabhumi flights
London City to Suvarnabhumi flights
Heathrow to Don Mueang Intl flights
Luton to Suvarnabhumi flights
Gatwick to Don Mueang Intl flights
Manchester to Suvarnabhumi flights
Manchester to Don Mueang Intl flights
Heathrow to Phuket City flights
Gatwick to Phuket City flights
Birmingham to Suvarnabhumi flights
Stansted to Phuket City flights
London City to Phuket City flights
Birmingham to Don Mueang Intl flights
Edinburgh to Suvarnabhumi flights
Manchester to Phuket City flights
Newcastle upon Tyne to Suvarnabhumi flights
Southend to Suvarnabhumi flights
Heathrow to Ko Samui flights
Edinburgh to Don Mueang Intl flights
Southampton to Suvarnabhumi flights
Gatwick to Ko Samui flights
Newcastle upon Tyne to Don Mueang Intl flights
Luton to Phuket City flights
London City to Ko Samui flights
Heathrow to Krabi flights
Gatwick to Krabi flights
Heathrow to Chiang Mai flights
Stansted to Ko Samui flights
Stansted to Krabi flights
Birmingham to Phuket City flights
Gatwick to Chiang Mai flights
London City to Chiang Mai flights
Stansted to Chiang Mai flights
London City to Krabi flights
Bristol to Suvarnabhumi flights
Manchester to Ko Samui flights
Edinburgh to Phuket City flights
Manchester to Krabi flights
Newcastle upon Tyne to Phuket City flights
Luton to Chiang Mai flights
Liverpool to Suvarnabhumi flights
Leeds to Suvarnabhumi flights
Gatwick to Khon Kaen flights
Luton to Krabi flights
Heathrow to Rayong flights
Birmingham to Ko Samui flights
Newcastle upon Tyne to Krabi flights

Top 10 airlines flying from Portsmouth to Bangkok

AirlineCheapestAverageFlexibilityOn-time
Turkmenistan AirlinesCheapest£267Average£548FlexibilityNo cancel feeOn-time63%
Search Turkmenistan Airlines flights
Hahn AirCheapest£272Average£731FlexibilityNo cancel feeOn-timeN/A
Search Hahn Air flights
Royal JordanianCheapest£306Average£677FlexibilityNo cancel feeOn-time61%
Search Royal Jordanian flights
Scandinavian AirlinesCheapest£337Average£616FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
Hainan AirlinesCheapest£363Average£421FlexibilityNo cancel feeOn-time61%
Search Hainan Airlines flights
Riyadh AirCheapest£395Average£502FlexibilityNo cancel feeOn-timeN/A
Search Riyadh Air flights
A.P.G.Cheapest£453Average£694FlexibilityNo cancel feeOn-timeN/A
Search A.P.G. flights
LufthansaCheapest£454Average£702FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Kuwait AirwaysCheapest£461Average£567FlexibilityNo cancel feeOn-time64%
Search Kuwait Airways flights
Air ArabiaCheapest£466Average£617FlexibilityNo cancel feeOn-time79%
Search Air Arabia flights

Fly with Cheapflights

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.