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Cheap flights from Portsmouth to Osaka Kansai Intl Airport from £424

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 1/1. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — KIX
2 Jan — 9 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Portsmouth to Kansai Intl

Enter your travel dates to find the best prices.

Cheapest flights from Portsmouth to Kansai Intl
Explore the most affordable flight options available from Portsmouth to Kansai Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 3 December 2025.

Fri 12/1220:10SOU - KIX
2 stops59h 15mQatar Airways
Thu 8/117:55KIX - SOU
2 stops34h 45mQatar Airways
Deal found 1/12£2,408
Fri 12/1220:10SOU - KIX
2 stops59h 15mQatar Airways
Fri 9/117:55KIX - SOU
2 stops54h 40mQatar Airways
Deal found 1/12£2,442
Tue 23/1220:10SOU - KIX
2 stops35h 15mQatar Airways
Sun 4/117:55KIX - SOU
2 stops34h 45mQatar Airways
Deal found 1/12£2,576
Sun 14/1220:10SOU - KIX
2 stops35h 15mQatar Airways
Thu 8/117:55KIX - SOU
2 stops34h 45mQatar Airways
Deal found 1/12£2,688
Sun 14/1220:10SOU - KIX
2 stops35h 15mQatar Airways
Fri 9/117:55KIX - SOU
2 stops54h 40mQatar Airways
Deal found 1/12£2,723
Sat 13/1209:30SOU - KIX
2 stops21h 55mMultiple Airlines
Thu 8/117:55KIX - SOU
2 stops34h 45mMultiple Airlines
Deal found 1/12£2,891
Sat 13/1209:30SOU - KIX
2 stops21h 55mQatar Airways
Fri 9/117:55KIX - SOU
2 stops54h 40mQatar Airways
Deal found 1/12£2,933
Wed 24/1208:40SOU - KIX
2 stops22h 45mMultiple Airlines
Sat 3/121:05KIX - SOU
3 stops31h 35mMultiple Airlines
Deal found 1/12£3,006
Tue 23/1219:55SOU - KIX
2 stops35h 30mMultiple Airlines
Sat 3/121:05KIX - SOU
3 stops31h 35mMultiple Airlines
Deal found 1/12£3,038

Find flight deals from Portsmouth to Kansai Intl

Keep the following information in mind while searching for Portsmouth to Kansai Intl flight deals. Data was last updated 3 December 2025.

Round-trip from

£699

One-way from

£424

Popular in

July

Cheapest in

February

Average price

£976
15/1-22/1
  • 15/1-22/1
  • 4 total stops
  • 72h 30m total
  • Portsmouth to Osaka
Search Deals
1/1
  • 1/1
  • 3 total stops
  • 46h 05m total
  • Portsmouth to Osaka
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£91 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£21 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Portsmouth to Kansai Intl 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 3 December 2025.
Use the filters below to find and compare flights from Portsmouth to Osaka Kansai Intl Airport that are best for you.

Fly from

Portsmouth

Fly to

Kansai Intl

Route

Depart

Return

Price

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Thu 15/1

15:00-12:35

2 stops36h 35m

Osaka Kansai Intl

Thu 22/1

14:35-17:30

2 stops35h 55m

£699

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Wed 21/1

09:25-11:20

1 stop16h 55m

Osaka Kansai Intl

Sun 25/1

13:00-17:05

1 stop37h 05m

£877

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Sun 11/1

17:45-11:20

1 stop32h 35m

Osaka Kansai Intl

Thu 15/1

13:00-17:05

1 stop37h 05m

£1,019

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Sat 31/1

09:30-16:25

2 stops45h 55m

Osaka Kansai Intl

Sun 22/2

17:55-15:35

2 stops30h 40m

£1,283

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Thu 1/1

14:15-21:20

3 stops46h 05m

£424

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Fri 12/12

20:10-16:25

2 stops59h 15m

£1,193

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Sun 14/12

20:10-16:25

2 stops35h 15m

£1,523

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Sat 13/12

09:30-16:25

2 stops21h 55m

£1,790

Flights are sorted by cheapest return flights first.

Deals found on 2/12

Best time to book a flight from Portsmouth to Kansai Intl

Have a flexible travel schedule? Discover the best time to fly to Kansai Intl 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 Osaka Kansai Intl Airport

What is the cheapest month to book a flight from Portsmouth to Osaka Kansai Intl Airport?

Currently, March is the cheapest month in which you can book a flight from Portsmouth to Osaka Kansai Intl Airport (average of £312). Flying from Portsmouth to Osaka Kansai Intl Airport in July is currently the most expensive (average of £731). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from P0R to KIX?

Find hourly flight availability from Portsmouth to Kansai Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 3 December 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 19% on flights from Portsmouth to Osaka Kansai Intl Airport by exploring options for tickets in the evening.

What is the cheapest day to fly from Portsmouth to Osaka Kansai Intl Airport?

Use this chart to determine the cheapest time to fly return from Portsmouth to Kansai Intl. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their Portsmouth to Osaka Kansai Intl Airport flight should consider departing on Thursday afternoons when fares are most often at their lowest. Sunday at midday flights should be avoided if possible as fares are typically the most expensive at this time.

Related info for your journey

Find useful and relevant information for your journey from Portsmouth to Kansai Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

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

  • How can I find direct flights from Portsmouth to Kansai Intl?

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

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

    Yes. Cheapflights offers flight deals from Portsmouth to Kansai Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Portsmouth to Osaka Kansai Intl Airport?

    Currently, March is the cheapest month in which you can book a flight from Portsmouth to Osaka Kansai Intl Airport (average of £312). Flying from Portsmouth to Osaka Kansai Intl Airport in July is currently the most expensive (average of £731). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top 10 airlines flying from Portsmouth to Kansai Intl

Discover the top 10 airlines that operate flights from Portsmouth to Kansai Intl. 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 3 December 2025.
AirlineCheapestAverageFlexibilityOn-time
China EasternCheapest£399Average£610FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
China SouthernCheapest£432Average£544FlexibilityNo cancel feeOn-time69%
Search China Southern flights
Shenzhen AirlinesCheapest£458Average£587FlexibilityNo cancel feeOn-time63%
Search Shenzhen Airlines flights
Air ChinaCheapest£470Average£675FlexibilityNo cancel feeOn-time67%
Search Air China flights
Cathay PacificCheapest£697Average£868FlexibilityNo cancel feeOn-time72%
Search Cathay Pacific flights
FinnairCheapest£731Average£1,034FlexibilityNo cancel feeOn-time76%
Search Finnair flights
KLMCheapest£737Average£878FlexibilityNo cancel feeOn-time75%
Search KLM flights
Asiana AirlinesCheapest£741Average£936FlexibilityNo cancel feeOn-time76%
Search Asiana Airlines flights
ANACheapest£744Average£989FlexibilityNo cancel feeOn-time80%
Search ANA flights
Etihad AirwaysCheapest£749Average£1,075FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Portsmouth to Kansai Intl?

Deals for Portsmouth to Kansai Intl flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Kansai Intl from Portsmouth.

Can Cheapflights find flights from Portsmouth to Kansai Intl with no change fees?

Certainly. Search results for flights to Kansai Intl 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 Kansai Intl become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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