£373 Find Cheap Flights from Portsmouth to Bangkok

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Portsmouth to Bangkok departing on 17/1. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest return fare
£716
Overall average: £869
Qatar Airways
Wed 18/3Wed 25/3
SOU - BKK • 2 stops
Cheapest one-way flight
£373
Multiple Airlines
Sat 17/1
SOU - BKK • 3 stops
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Flight Deals
Useful Info
Flight Deals

Cheap Flights from Portsmouth to Bangkok

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Portsmouth to Bangkok that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Portsmouth to Bangkok

Wed, 18 Mar - Wed, 25 Mar
Qatar Airways Logo
12:25 - 06:40
SOU
-
BKK
35h 15m2 stops
Qatar Airways Logo
08:15 - 19:40
BKK
-
SOU
42h 25m2 stops
£716Qatar Airways
Thu, 5 Feb - Thu, 26 Feb
Multiple Airlines Logo
09:00 - 21:05
SOU
-
BKK
29h 05m2 stops
Multiple Airlines Logo
11:50 - 19:20
BKK
-
SOU
38h 30m3 stops
£731Multiple Airlines
Wed, 18 Mar - Wed, 25 Mar
Multiple Airlines Logo
08:40 - 10:05
SOU
-
BKK
18h 25m1 stop
Multiple Airlines Logo
11:35 - 08:20
BKK
-
SOU
27h 45m2 stops
£732Multiple Airlines
Tue, 3 Mar - Tue, 24 Mar
Qatar Airways Logo
12:25 - 19:25
SOU
-
BKK
24h 00m2 stops
Qatar Airways Logo
18:55 - 15:35
BKK
-
SOU
27h 40m2 stops
£764Qatar Airways
Wed, 21 Jan - Wed, 18 Feb
Qatar Airways Logo
12:25 - 19:25
SOU
-
BKK
48h 00m2 stops
Qatar Airways Logo
18:55 - 19:40
BKK
-
SOU
31h 45m2 stops
£772Qatar Airways
Thu, 26 Feb - Wed, 11 Mar
Qatar Airways Logo
09:30 - 12:15
SOU
-
BKK
19h 45m2 stops
Qatar Airways Logo
02:00 - 19:40
BKK
-
SOU
24h 40m2 stops
£773Qatar Airways
Thu, 26 Feb - Tue, 17 Mar
Qatar Airways Logo
09:30 - 12:15
SOU
-
BKK
19h 45m2 stops
Qatar Airways Logo
09:05 - 15:35
BKK
-
SOU
37h 30m2 stops
£776Qatar Airways
Wed, 25 Feb - Wed, 11 Mar
Qatar Airways Logo
12:25 - 13:05
SOU
-
BKK
41h 40m2 stops
Qatar Airways Logo
02:00 - 19:40
BKK
-
SOU
24h 40m2 stops
£779Qatar Airways
Thu, 5 Feb - Thu, 26 Feb
Multiple Airlines Logo
09:00 - 23:25
SOU
-
BKK
31h 25m2 stops
Multiple Airlines Logo
14:40 - 17:00
BKK
-
SOU
33h 20m2 stops
£779Multiple Airlines
Wed, 25 Feb - Tue, 17 Mar
Qatar Airways Logo
12:25 - 12:15
SOU
-
BKK
40h 50m2 stops
Qatar Airways Logo
09:05 - 15:35
BKK
-
SOU
37h 30m2 stops
£781Qatar Airways
Useful Info

Good to know - Cheap tickets from Portsmouth to Bangkok

Cheapest flight£373
Flight from Southampton to Bangkok Suvarnabhumi Airport

When to book flights from Portsmouth to Bangkok

Are your dates flexible? Find out the best times to travel from Portsmouth to Bangkok based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

FAQs for booking flights from Portsmouth to Bangkok

  • How does KAYAK find such low prices on flights from Portsmouth to Bangkok?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Portsmouth to Bangkok.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Portsmouth to Bangkok?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Bangkok from Portsmouth is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Portsmouth to Bangkok?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Bangkok with an airline and back to Portsmouth with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Portsmouth to Bangkok?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Bangkok from Portsmouth up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Portsmouth to Bangkok

 
Need help choosing which airline to fly with from Portsmouth to Bangkok? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.7
KLMOverall score based on 1430 reviews
8.4Crew
7.2Food
7.6Comfort
7.8Boarding
7.1Entertainment
Airline reviews

Delay and had to run between flight to get my connection due to this delay but besides that the overall experience was ok. I arrived with just an hour of delay.

8.0 ExcellentKevin, Nov 2025
HEL - AMS
Read more KLM reviews

Delay and had to run between flight to get my connection due to this delay but besides that the overall experience was ok. I arrived with just an hour of delay.

At the airport, terrible, I do not want to even remember it. It was too humiliating for a business class passenger.

Flight was ok but lack of communication cost me to literally beg to be put on another flight as connecting flight had departed

They forgot to serve food and the crew was very unfriendly. Never experienced such a bad KLM flight. Usually fly from Toronto. New York was different.

Couldn’t get boarding pass in SLC even with help from a redcoat, so had to find a desk in AMS to get boarding pass. Technical problems so not sure why. Very inconvenient. The KLM app is not as user friendly as most apps. Also had to wait almost an hour on the tarmac for a fuel truck, which caused us to miss a connecting bus in LUX.

Over 1 Hr delay. No APU so no AC on ground. Plane was hot during boarding and then they closed the doors over 20 minutes before engine start so interior of plane was steamy hot and stuffy. Could have been helped by opening doors until ready to depart.

First of all we couldn’t check in online, then we learn at the airport we were on stand by for KLM’s mistake of overbooking. The seats were not comfy at all. Our luggage got lost.

Ad experience - been flying many years with them but they are losing out to other carriers with their service and bagage / seating policy. My 2 12-yo kids were not placed with the parent. Absurdity.

Short flight so it was okay. Nice crew, all very pleasant and professional. We were near the back in row 27 so just as we got our drinks, we started our descent so had to drink very quickly!

KLM remains a quality flag carrier airline which maintains its standards whilst all their competitors are lowering theirs.

Everything you need to know for your flight from Portsmouth to Bangkok

Cabin class types available on flights to Portsmouth

Cabin classes available on flights to Portsmouth. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.