฿17,132+ Cheap flights to Portsmouth

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 22/10. Fares are subject to change and may not be available on all flights or dates of travel.
— LHR
8 Jun — 15 Jun1
1 adult
1 adult, Economy, 0 bags

Flights to Portsmouth in 2026

Enter your travel dates to find the best prices.

Cheapest flights to Portsmouth
Explore the most affordable flight options available to Portsmouth. Find the lowest fares based on data from user searches, with prices last updated on 9 May 2026.

Wed 20/502:30
BKK
-
SOU
2 stops23h 00m
Qatar Airways
Tue 16/620:00
SOU
-
BKK
2 stops34h 55m
Qatar Airways
Deal found 4/5฿35,231
Wed 3/602:30
BKK
-
SOU
2 stops23h 00m
Qatar Airways
Mon 8/609:20
SOU
-
BKK
2 stops22h 55m
Qatar Airways
Deal found 5/5฿35,714
Sat 6/619:00
BKK
-
SOU
2 stops30h 30m
Qatar Airways
Sat 13/609:20
SOU
-
BKK
2 stops39h 30m
Qatar Airways
Deal found 7/5฿36,165
Mon 10/803:00
BKK
-
SOU
2 stops22h 30m
Qatar Airways
Tue 18/820:00
SOU
-
BKK
2 stops28h 20m
Qatar Airways
Deal found 4/5฿41,060
Mon 11/502:30
BKK
-
SOU
2 stops23h 00m
Qatar Airways
Sat 16/520:00
SOU
-
BKK
2 stops35h 45m
Qatar Airways
Deal found 8/5฿57,226

Find flight deals to Portsmouth

Find the latest flights to Portsmouth in 2026, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 17,341 searches and data was last updated on 9 May 2026.

Return from

฿23,670

One-way from

฿17,132

Popular in

January

Cheapest in

November

Average price

฿29,917
ซาอุเดียแอร์ไลน์
  • ซาอุเดียแอร์ไลน์
  • 26/5-9/6
  • 2 total stops
  • 36h 35m total
  • Bangkok to London
Search Deals
Qatar Airways
  • Qatar Airways
  • 22/10
  • 2 total stops
  • 28h 25m total
  • Bangkok to Portsmouth
Search Deals
Highest demand for flights based on searches. 1% potential increase in price.
Search Deals
Cheapest flight prices on average. 0% potential price decrease (฿271 potential savings vs. average return price).
Search Deals
Average for return flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Locate flights to Portsmouth that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 17,341 searches and data was last updated on 9 May 2026.
Use the filters below to find and compare flights to Portsmouth that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest return flight

BangkokSouthampton

BKK - SOU

BKKSOU

Bangkok Suvarnabhumi

Wed 20/5

02:30-19:30

2 stops23h 00m

Southampton Eastleigh

Tue 16/6

20:00-12:55

2 stops34h 55m

฿35,231
Fastest return journey

BangkokSouthampton

BKK - SOU

BKKSOU

Bangkok Suvarnabhumi

Wed 3/6

02:30-19:30

2 stops23h 00m

Southampton Eastleigh

Mon 8/6

09:20-14:15

2 stops22h 55m

฿35,714

BangkokSouthampton

BKK - SOU

BKKSOU

Bangkok Suvarnabhumi

Sat 6/6

19:00-19:30

2 stops30h 30m

Southampton Eastleigh

Sat 13/6

09:20-06:50

2 stops39h 30m

฿36,165

BangkokSouthampton

BKK - SOU

BKKSOU

Bangkok Suvarnabhumi

Mon 10/8

03:00-19:30

2 stops22h 30m

Southampton Eastleigh

Tue 18/8

20:00-06:20

2 stops28h 20m

฿41,060
Cheapest one-way

BangkokSouthampton

BKK - SOU

BKKSOU

Bangkok Suvarnabhumi

Thu 22/10

21:05-19:30

2 stops28h 25m

฿17,132
Fastest single journey

BangkokSouthampton

BKK - SOU

BKKSOU

Bangkok Suvarnabhumi

Wed 15/7

03:00-19:30

2 stops22h 30m

฿17,197

BangkokSouthampton

BKK - SOU

BKKSOU

Bangkok Suvarnabhumi

Mon 25/5

07:05-09:25

2 stops32h 20m

฿29,177

BangkokSouthampton

BKK - SOU

BKKSOU

Bangkok Suvarnabhumi

Sat 23/5

01:00-19:30

2 stops24h 30m

฿30,272

BangkokSouthampton

BKK - SOU

BKKSOU

Bangkok Suvarnabhumi

Tue 26/5

19:00-19:30

2 stops30h 30m

฿32,333

BangkokSouthampton

BKK - SOU

BKKSOU

Bangkok Suvarnabhumi

Thu 18/6

20:00-19:30

2 stops29h 30m

฿32,397

Flights are sorted by cheapest return flights first.

Deals found on 6/5

Showing 1-10 of 14 resultsSorted by cheapest first
1
2

Best time to book a flight to Portsmouth

Have a flexible travel schedule? Discover the best time to fly to 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 to Portsmouth

How long is the flight to Portsmouth?

On average, a flight from Bangkok to Portsmouth takes 29 hours 45 minutes. Flights to Portsmouth from other popular cities in Thailand will vary in length. Below are a few examples of popular routes and their flight times.

Weekly flight availability to Portsmouth

The most flights from Bangkok to Portsmouth 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 Portsmouth by month

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

In terms of precipitation, rainfall in Portsmouth ranges from 25.0 - 76.0 mm per month. December is typically the wettest month, when rainfall can reach 76.0 mm. July is typically the driest time to visit Portsmouth when rainfall is around 25.0 mm.

Temperature in Portsmouth by month

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

If weather is an important factor for your trip to Portsmouth, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 18.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 4.0 C).

FAQs about flying to Portsmouth

  • Can I find cheaper flights to Portsmouth if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to Portsmouth on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to Portsmouth?

    Based on reviews from Cheapflights users, China Eastern is rated the highest out of the airlines that fly to Portsmouth.

  • How much is a return flight to Portsmouth?

    A return flight to Portsmouth will typically cost around ฿9,711, however they can be found for as little as ฿8,373.

  • Where does the fastest flight to Portsmouth depart from?

    For those looking to save time traveling to Portsmouth, Phuket City offers the quickest one-way flight (28 hours 30 minutes).

  • Does London Heathrow have rental cars?

    Yes. Those touching down at London Heathrow can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to London Heathrow?

    Yes. London Heathrow has hotels nearby for those requiring accommodations. Aeropartment & Aerotel, London Heathrow Airport, Terminal 4, Ev Stations & Cheap Parking On Site! is the closest property to London Heathrow (0.0 km away from London Heathrow).

See more FAQs

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How does Cheapflights help users find flights to Portsmouth?

When you search for this flight to Portsmouth, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the best flight for you.

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It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights to Portsmouth.

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Users can book flights with no change fees policies with our dedicated filters. Book flights to Portsmouth flexibly with Cheapflights today.

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