£453 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 20/4. 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
£555
Typical prices: £740-£875
KLM
Sun 6/9Sat 3/10
SOU - BKK • 1 stop
Cheapest one-way flight
£453
Qatar Airways
Mon 20/4
SOU - BKK • 2 stops
Direct flights
Every day
You can fly direct with Batik Air, 9 Air, and others. Average duration is 0
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
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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

Sun, 6 Sep - Sat, 3 Oct
KLM Logo
09:15 - 09:30
SOU
-
BKK
18h 15m
1 stop
KLM Logo
12:05 - 08:45
BKK
-
SOU
26h 40m
1 stop
£555KLM
Tue, 8 Sep - Mon, 5 Oct
KLM Logo
17:20 - 09:30
SOU
-
BKK
34h 10m
1 stop
KLM Logo
12:05 - 08:35
BKK
-
SOU
26h 30m
1 stop
£567KLM
Tue, 8 Sep - Mon, 5 Oct
KLM Logo
17:20 - 09:30
SOU
-
BKK
34h 10m
1 stop
KLM Logo
12:05 - 16:50
BKK
-
SOU
34h 45m
1 stop
£571KLM
Sun, 7 Jun - Sun, 28 Jun
KLM Logo
09:15 - 09:30
SOU
-
BKK
18h 15m
1 stop
KLM Logo
11:25 - 08:35
BKK
-
SOU
27h 10m
2 stops
£582KLM
Tue, 8 Sep - Mon, 5 Oct
KLM Logo
17:20 - 09:30
SOU
-
BKK
34h 10m
1 stop
KLM Logo
12:05 - 08:35
BKK
-
SOU
26h 30m
1 stop
£590KLM
Tue, 8 Sep - Mon, 5 Oct
KLM Logo
17:20 - 09:15
SOU
-
BKK
33h 55m
2 stops
KLM Logo
12:05 - 16:50
BKK
-
SOU
34h 45m
1 stop
£590KLM
Tue, 8 Sep - Mon, 5 Oct
KLM Logo
17:20 - 09:15
SOU
-
BKK
33h 55m
2 stops
KLM Logo
12:05 - 16:50
BKK
-
SOU
34h 45m
1 stop
£591KLM
Tue, 8 Sep - Mon, 5 Oct
KLM Logo
17:20 - 09:30
SOU
-
BKK
34h 10m
1 stop
KLM Logo
12:05 - 16:50
BKK
-
SOU
34h 45m
1 stop
£592KLM
Tue, 8 Sep - Mon, 5 Oct
KLM Logo
17:20 - 09:30
SOU
-
BKK
34h 10m
1 stop
KLM Logo
12:05 - 08:35
BKK
-
SOU
26h 30m
1 stop
£595KLM
Mon, 7 Sep - Sun, 4 Oct
KLM Logo
17:20 - 09:30
SOU
-
BKK
34h 10m
1 stop
KLM Logo
11:25 - 16:50
BKK
-
SOU
35h 25m
2 stops
£608KLM
Useful Info

Good to know - Cheap tickets from Portsmouth to Bangkok

Cheapest flight£453
Flight from Southampton to Bangkok

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.
7.8
KLMOverall score based on 1471 reviews
7.6Comfort
8.4Crew
7.1Entertainment
7.8Boarding
7.3Food
Airline reviews

It was really nice experience by flying this klm flight.I personally recommend everyone to please try this klm flight

10.0 Excellentsmit, Mar 2026
BLR - AMS
Read more KLM reviews

It was really nice experience by flying this klm flight.I personally recommend everyone to please try this klm flight

The crew were unprofessional with a racist element. I was physically abused as well from one of the crew members

Crew is not the cheerful type. very slow meal service (this is their style as have flown this many times)

Empty seats next to me - wish it had been for a longer flight!!

I’m grateful for the KLM Air France shuttle bus service to Ottawa. However due to construction and other issues related to the chaotic Uber pickup system at YUL, it’s a challenge to find the Kelios bus service to Ottawa. The signs are not clear or even available. No staff to guide passengers. It’s a stressful experience.

Terrible last row seats many seats available but no offer to move to better seat

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.

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.
First Class flights to Bangkok
Business Class flights to Bangkok
Premium Economy Class flights to Bangkok
Economy class flights to Bangkok