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Cheap flights from Portsmouth to Osaka from £639

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 31/8. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — OSA
24 Jun — 1 Jul1
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
Explore the most affordable flight options available from Portsmouth to Osaka. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 25 May 2026.

Thu 2/720:00
SOU
-
KIX
2 stops55h 50m
Multiple Airlines
Wed 8/718:40
KIX
-
SOU
2 stops32h 50m
Multiple Airlines
Deal found 25/5£970
Tue 7/720:00
SOU
-
KIX
2 stops37h 25m
Qatar Airways
Tue 14/718:55
KIX
-
SOU
2 stops32h 35m
Qatar Airways
Deal found 23/5£1,014
Thu 18/619:30
SOU
-
KIX
3 stops32h 10m
Multiple Airlines
Thu 25/610:05
KIX
-
SOU
3 stops31h 20m
Multiple Airlines
Deal found 21/5£1,123
Thu 18/609:05
SOU
-
KIX
1 stop17h 10m
KLM
Thu 25/611:25
KIX
-
SOU
2 stops29h 10m
KLM
Deal found 21/5£1,216
Sat 12/909:20
SOU
-
KIX
2 stops24h 05m
Qatar Airways
Thu 24/918:55
KIX
-
SOU
2 stops32h 35m
Qatar Airways
Deal found 22/5£1,323
Tue 7/706:45
SOU
-
KIX
2 stops22h 00m
Multiple Airlines
Tue 14/709:30
KIX
-
SOU
3 stops30h 35m
Multiple Airlines
Deal found 23/5£1,330

Find flight deals from Portsmouth to Osaka

Keep the following information in mind while searching for Portsmouth to Osaka flight deals. Data was last updated 25 May 2026.

Round-trip from

£970

One-way from

£639

Popular in

July

Cheapest in

January

Average price

£542
2/7-8/7
  • 2/7-8/7
  • 4 total stops
  • 88h 40m total
  • Portsmouth to Osaka
Search Deals
31/8
  • 31/8
  • 2 total stops
  • 24h 05m total
  • Portsmouth to Osaka
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£96 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£19 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Portsmouth to Osaka 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 25 May 2026.
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 - KIX

SOUKIX

Southampton Eastleigh

Thu 2/7

20:00-11:50

2 stops55h 50m

Osaka Kansai Intl

Wed 8/7

18:40-19:30

2 stops32h 50m

£970

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Thu 18/6

19:30-11:40

3 stops32h 10m

Osaka Kansai Intl

Thu 25/6

10:05-09:25

3 stops31h 20m

£1,123
Fastest return journey

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Thu 18/6

09:05-10:15

1 stop17h 10m

Osaka Kansai Intl

Thu 25/6

11:25-08:35

2 stops29h 10m

£1,216

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Sat 12/9

09:20-17:25

2 stops24h 05m

Osaka Kansai Intl

Thu 24/9

18:55-19:30

2 stops32h 35m

£1,323

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Tue 7/7

06:45-12:45

2 stops22h 00m

Osaka Kansai Intl

Tue 14/7

09:30-08:05

3 stops30h 35m

£1,330

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Sun 19/7

09:20-17:25

2 stops24h 05m

Osaka Kansai Intl

Sun 2/8

18:55-14:45

2 stops27h 50m

£1,591

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Sun 13/9

09:20-17:25

2 stops24h 05m

Osaka Kansai Intl

Fri 2/10

18:55-09:45

2 stops22h 50m

£1,739
Cheapest one-way

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Fri 28/8

20:00-17:25

2 stops37h 25m

£658

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Sat 29/8

20:00-17:25

2 stops37h 25m

£658

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Tue 1/9

20:00-17:25

2 stops37h 25m

£709

Flights are sorted by cheapest return flights first.

Deals found on 22/5

Showing 1-10 of 16 resultsSorted by cheapest first
1
2

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

Reviews of airlines servicing Osaka

Get insights into the airlines that provide service to Osaka. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Osaka. Reviews last updated 25 May 2026.
Check out reviews from past customers who have flown with KLM from Portsmouth to Osaka to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,522 reviews
Check prices

Boarding

7.8

Crew

8.4

Food

7.3

Comfort

7.7

Entertainment

7.2

Overall

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
KLM
7.8
Good
1,522 reviews
KLM
7.8
Good
1,522 reviews
Check prices

Boarding

7.8

Crew

8.4

Food

7.3

Comfort

7.7

Entertainment

7.2

Overall

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

Related info for your journey

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

Browse thousands of different options on Cheapflights for your next trip

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Top 9 airlines flying from Portsmouth to Osaka

Discover the top 9 airlines that operate flights from Portsmouth to Osaka. 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 25 May 2026.
AirlineCheapestAverageFlexibilityOn-time
China EasternCheapest£398Average£644FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
China SouthernCheapest£429Average£575FlexibilityNo cancel feeOn-time69%
Search China Southern flights
Air ChinaCheapest£458Average£758FlexibilityNo cancel feeOn-time67%
Search Air China flights
Cathay PacificCheapest£721Average£883FlexibilityNo cancel feeOn-time72%
Search Cathay Pacific flights
Asiana AirlinesCheapest£753Average£978FlexibilityNo cancel feeOn-time76%
Search Asiana Airlines flights
KLMCheapest£784Average£1,232FlexibilityNo cancel feeOn-time75%
Search KLM flights
Etihad AirwaysCheapest£847Average£1,173FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
Japan AirlinesCheapest£980Average£1,207FlexibilityNo cancel feeOn-time79%
Search Japan Airlines flights
EmiratesCheapest£984Average£1,110FlexibilityNo cancel feeOn-time75%
Search Emirates flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Portsmouth to Osaka?

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

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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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