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Cheap flights from Portsmouth to Osaka from £588

LHR — OSA
20 Sep — 27 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Portsmouth to Osaka

Enter your travel dates to find the best prices.

Cheapest flights from Portsmouth to Osaka

Wed 16/917:20 -
1 stop32h 45m
Tue 22/911:55 -
1 stop36h 55m
Deal found 17/8£588
Wed 16/917:20 -
2 stops34h 00m
Tue 22/911:55 -
1 stop36h 55m
Deal found 17/8£881
Sun 13/909:20 -
2 stops24h 05m
Sun 20/918:55 -
2 stops32h 35m
Deal found 16/8£943
Wed 16/920:00 -
2 stops37h 25m
Tue 22/918:55 -
2 stops32h 35m
Deal found 17/8£981
Sun 13/917:20 -
1 stop32h 45m
Sun 20/911:55 -
1 stop28h 40m
Deal found 16/8£1,013
Wed 30/909:20 -
3 stops37h 05m
Wed 7/1012:25 -
3 stops39h 05m
Deal found 16/8£1,049

Find flight deals from Portsmouth to Osaka

Round-trip from

£588

Popular in

July

Cheapest in

January

Average price

£938
KLM
  • KLM
  • 16/9-22/9
  • 2 total stops
  • 69h 40m total
  • Portsmouth to Osaka
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Highest demand for flights based on searches. 18% potential increase in price (£116 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£19 potential savings vs. average return price).
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Average for round-trip flights in August 2026
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Portsmouth to Osaka that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SouthamptonOsaka

SOU Southampton Eastleigh - KIX Osaka Kansai Intl

SOUKIX

Southampton Eastleigh

Wed 16/9

17:20-10:05

1 stop32h 45m

Osaka Kansai Intl

Tue 22/9

11:55-16:50

1 stop36h 55m

£588

SouthamptonOsaka

SOU Southampton Eastleigh - KIX Osaka Kansai Intl

SOUKIX

Southampton Eastleigh

Wed 16/9

17:20-11:20

2 stops34h 00m

Osaka Kansai Intl

Tue 22/9

11:55-16:50

1 stop36h 55m

£881

SouthamptonOsaka

SOU Southampton Eastleigh - KIX Osaka Kansai Intl

SOUKIX

Southampton Eastleigh

Sun 13/9

17:20-10:05

1 stop32h 45m

Osaka Kansai Intl

Sun 20/9

11:55-08:35

1 stop28h 40m

£1,013
Fastest return journey

SouthamptonOsaka

SOU Southampton Eastleigh - KIX Osaka Kansai Intl

SOUKIX

Southampton Eastleigh

Thu 3/9

09:20-17:25

2 stops24h 05m

Osaka Kansai Intl

Mon 7/9

18:55-19:30

2 stops32h 35m

£1,131

SouthamptonOsaka

SOU Southampton Eastleigh - KIX Osaka Kansai Intl

SOUKIX

Southampton Eastleigh

Wed 30/9

19:55-12:45

2 stops32h 50m

Osaka Kansai Intl

Wed 7/10

14:20-14:30

2 stops32h 10m

£1,154

SouthamptonOsaka

SOU Southampton Eastleigh - KIX Osaka Kansai Intl

SOUKIX

Southampton Eastleigh

Sun 4/10

11:05-17:15

2 stops22h 10m

Osaka Kansai Intl

Sun 11/10

23:45-08:25

2 stops40h 40m

£1,455

Flights are sorted by cheapest return flights first.

Deals found on 17/8

Sorted by cheapest first

Best time to book a flight from Portsmouth to Osaka

Have a flexible travel schedule? Discover the best time to fly to Osaka from Portsmouth with our price prediction graph.
Estimated return price

Cheapflights Insights

Everything you need to know about your flight from Portsmouth to Osaka

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

Related info for your journey

  • How long is the flight from Portsmouth to Osaka?

    KLM can get you from Portsmouth to Osaka in just under 32h 45m. Your travel time can differ by up to . Airlines will cover a distance of 5970 mi.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Portsmouth to Osaka 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

Browse thousands of different options on Cheapflights for your next trip

Top 9 airlines flying from Portsmouth to Osaka

AirlineCheapestAverageFlexibilityOn-time
China EasternCheapest£392Average£631FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
China SouthernCheapest£424Average£441FlexibilityNo cancel feeOn-time69%
Search China Southern flights
Air ChinaCheapest£452Average£694FlexibilityNo cancel feeOn-time67%
Search Air China flights
KLMCheapest£536Average£683FlexibilityNo cancel feeOn-time75%
Search KLM flights
Asiana AirlinesCheapest£544Average£924FlexibilityNo cancel feeOn-time76%
Search Asiana Airlines flights
Etihad AirwaysCheapest£624Average£1,127FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
Cathay PacificCheapest£727Average£888FlexibilityNo cancel feeOn-time72%
Search Cathay Pacific flights
Japan AirlinesCheapest£817Average£1,026FlexibilityNo cancel feeOn-time79%
Search Japan Airlines flights
EmiratesCheapest£971Average£1,059FlexibilityNo cancel feeOn-time75%
Search Emirates flights

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

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Portsmouth to Osaka for you. Better yet — we are completely free to use.

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from Portsmouth to Osaka, users can toggle the no change fees filter when performing a flight search.

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

Yes, Cheapflights offers price alerts on Portsmouth to Osaka 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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