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Cheap flights from Portsmouth to Vietnam from £645

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 7/10. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SGN
15 Sep — 22 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Portsmouth to Vietnam

Enter your travel dates to find the best prices.

Cheapest flights from Portsmouth to Vietnam
Explore the most affordable flight options available from Portsmouth to Vietnam. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 August 2026.

Sun 27/909:20 -
3 stops32h 55m
Sun 4/1011:10 -
3 stops38h 20m
Deal found 13/8£711
Sun 27/909:20 -
3 stops31h 40m
Sun 4/1008:35 -
3 stops40h 55m
Deal found 13/8£722
Fri 25/909:25 -
3 stops30h 00m
Fri 2/1008:35 -
3 stops40h 55m
Deal found 11/8£779
Sun 27/917:20 -
2 stops56h 05m
Sun 4/1008:40 -
2 stops29h 55m
Deal found 13/8£864
Tue 29/1219:55 -
2 stops28h 00m
Tue 12/119:10 -
2 stops31h 15m
Deal found 14/8£1,045
Thu 24/920:00 -
2 stops29h 15m
Mon 28/919:30 -
2 stops30h 00m
Deal found 13/8£1,078
Tue 10/1108:55 -
2 stops21h 10m
Mon 16/1108:55 -
2 stops41h 35m
Deal found 14/8£1,112
Sun 30/809:20 -
2 stops22h 35m
Sat 12/919:30 -
2 stops20h 15m
Deal found 15/8£1,116
Tue 29/1220:00 -
2 stops27h 55m
Thu 14/119:10 -
2 stops31h 20m
Deal found 14/8£1,135
Thu 31/1209:20 -
2 stops38h 35m
Thu 14/119:10 -
2 stops31h 20m
Deal found 14/8£1,138
Mon 28/1220:00 -
2 stops51h 55m
Thu 14/119:10 -
2 stops31h 20m
Deal found 14/8£1,144
Mon 12/1020:00 -
2 stops35h 50m
Tue 20/1020:00 -
2 stops29h 30m
Deal found 14/8£1,155

Find flight deals from Portsmouth to Vietnam

Keep the following information in mind while searching for Portsmouth to Vietnam flight deals. Data was last updated 16 August 2026.

Round-trip from

£711

One-way from

£645

Popular in

July

Cheapest in

September

Average price

£766
27/9-4/10
  • 27/9-4/10
  • 6 total stops
  • 71h 15m total
  • Portsmouth to Vietnam
Search Deals
7/10
  • 7/10
  • 2 total stops
  • 23h 00m total
  • Portsmouth to Vietnam
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£61 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£13 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Portsmouth to Vietnam 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 16 August 2026.
Use the filters below to find and compare flights from Portsmouth to Vietnam that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SouthamptonHanoi

SOU Southampton Eastleigh - HAN Hanoi Noibai

SOUHAN

Southampton Eastleigh

Sun 27/9

09:20-00:15

3 stops32h 55m

Hanoi Noibai

Sun 4/10

11:10-19:30

3 stops38h 20m

£711

SouthamptonHo Chi Minh City

SOU Southampton Eastleigh - SGN Ho Chi Minh City

SOUSGN

Southampton Eastleigh

Sun 27/9

09:20-23:00

3 stops31h 40m

Ho Chi Minh City

Sun 4/10

08:35-19:30

3 stops40h 55m

£722

SouthamptonHo Chi Minh City

SOU Southampton Eastleigh - SGN Ho Chi Minh City

SOUSGN

Southampton Eastleigh

Fri 25/9

09:25-21:25

3 stops30h 00m

Ho Chi Minh City

Fri 2/10

08:35-19:30

3 stops40h 55m

£779

SouthamptonHo Chi Minh City

SOU Southampton Eastleigh - SGN Ho Chi Minh City

SOUSGN

Southampton Eastleigh

Sun 27/9

17:20-07:25

2 stops56h 05m

Ho Chi Minh City

Sun 4/10

08:40-08:35

2 stops29h 55m

£864

SouthamptonHanoi

SOU Southampton Eastleigh - HAN Hanoi Noibai

SOUHAN

Southampton Eastleigh

Fri 5/2

08:55-12:20

2 stops20h 25m

Hanoi Noibai

Mon 22/3

08:55-19:25

2 stops41h 30m

£939

SouthamptonHo Chi Minh City

SOU Southampton Eastleigh - SGN Ho Chi Minh City

SOUSGN

Southampton Eastleigh

Sat 9/1

07:25-01:10

2 stops34h 45m

Ho Chi Minh City

Sat 30/1

08:50-18:40

3 stops40h 50m

£997

SouthamptonHanoi

SOU Southampton Eastleigh - HAN Hanoi Noibai

SOUHAN

Southampton Eastleigh

Thu 24/9

20:00-07:15

2 stops29h 15m

Hanoi Noibai

Mon 28/9

19:30-19:30

2 stops30h 00m

£1,078

SouthamptonHo Chi Minh City

SOU Southampton Eastleigh - SGN Ho Chi Minh City

SOUSGN

Southampton Eastleigh

Tue 10/11

08:55-13:05

2 stops21h 10m

Ho Chi Minh City

Mon 16/11

08:55-19:30

2 stops41h 35m

£1,112
Fastest return journey

SouthamptonHanoi

SOU Southampton Eastleigh - HAN Hanoi Noibai

SOUHAN

Southampton Eastleigh

Sun 30/8

09:20-13:55

2 stops22h 35m

Hanoi Noibai

Sat 12/9

19:30-09:45

2 stops20h 15m

£1,116

SouthamptonHanoi

SOU Southampton Eastleigh - HAN Hanoi Noibai

SOUHAN

Southampton Eastleigh

Thu 31/12

09:20-06:55

2 stops38h 35m

Hanoi Noibai

Thu 14/1

19:10-19:30

2 stops31h 20m

£1,138

Flights are sorted by cheapest return flights first.

Deals found on 14/8

Showing 1-10 of 29 resultsSorted by cheapest first
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Best time to book a flight from Portsmouth to Vietnam

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

No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Portsmouth to Vietnam. 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 Vietnam?

    KLM can get you from Portsmouth to Vietnam in just under 56h 05m. Your travel time can differ by up to . The distance between Portsmouth and Vietnam is about 6395 mi.

  • What are the most popular routes from Portsmouth to Vietnam?

    When deciding which route to take from Portsmouth to Vietnam consider Southampton Eastleigh - Hanoi Noibai, Southampton Eastleigh - Ho Chi Minh City or Southampton Eastleigh - Da Nang as they are the most popular.

  • What are the cheapest flights from Portsmouth to Vietnam?

    Looking for the cheapest flight from Portsmouth to Vietnam? While on average our users pay £1,072, our data indicates the cheapest price to be £426. The most popular route (Southampton Eastleigh - Hanoi Noibai), is priced around £952.

  • Can I find deals for flights from Portsmouth to Vietnam that include hotel bookings?

    Yes. In addition to deals on Portsmouth to Vietnam flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Portsmouth to Vietnam?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portsmouth to Vietnam.

  • Can I find deals for business class flights from Portsmouth to Vietnam?

    Yes. Cheapflights offers flight deals from Portsmouth to Vietnam 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 Vietnam

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 Vietnam

Discover the top 10 airlines that operate flights from Portsmouth to Vietnam. 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 16 August 2026.
AirlineCheapestAverageFlexibilityOn-time
Hainan AirlinesCheapest£188Average£309FlexibilityNo cancel feeOn-time61%
Search Hainan Airlines flights
Air IndiaCheapest£258Average£607FlexibilityNo cancel feeOn-timeN/A
Search Air India flights
Etihad AirwaysCheapest£339Average£687FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
China EasternCheapest£356Average£477FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
Air ChinaCheapest£360Average£462FlexibilityNo cancel feeOn-time67%
Search Air China flights
Shenzhen AirlinesCheapest£365Average£480FlexibilityNo cancel feeOn-time63%
Search Shenzhen Airlines flights
China SouthernCheapest£401Average£606FlexibilityNo cancel feeOn-time69%
Search China Southern flights
Turkmenistan AirlinesCheapest£466Average£533FlexibilityNo cancel feeOn-time63%
Search Turkmenistan Airlines flights
Air FranceCheapest£502Average£556FlexibilityNo cancel feeOn-time77%
Search Air France flights
Malaysia AirlinesCheapest£512Average£754FlexibilityNo cancel feeOn-time67%
Search Malaysia Airlines 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 Vietnam?

Cheapflights makes it easy to find Portsmouth to Vietnam flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Portsmouth to Vietnam?

Millions of users choose and trust Cheapflights to book the best flight deals from Portsmouth to Vietnam 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 Vietnam with no change fees?

Certainly. Search results for flights to Vietnam from Portsmouth shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Portsmouth to Vietnam become cheaper?

Yes, Cheapflights offers price alerts on Portsmouth to Vietnam flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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