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Cheap flights from Portsmouth to Osaka from £764

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 15/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — OSA
16 Jul — 23 Jul1
1 adult

Cheap flight deals from Portsmouth to Osaka

Keep the following information in mind while searching for Portsmouth to Osaka flight deals. Data was last updated 11 July 2025.

Round-trip from

£1,114

One-way from

£764

Popular in

July

Cheapest in

November

Average price

£963
23/8-30/8
  • 23/8-30/8
  • 5 total stops
  • 66h 35m total
  • Portsmouth to Osaka
15/9
  • 15/9
  • 2 total stops
  • 20h 05m total
  • Portsmouth to Osaka
Highest demand for flights based on searches. 16% potential increase in price (£96 potential increase over avg. return price).
Cheapest flight prices on average. 4% potential price decrease (£21 potential savings vs. average return price).
Average for round-trip flights in July 2025

Find flight deals from Portsmouth to Osaka

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 11 July 2025.

Sat 23/809:20SOU - KIX
2 stops27h 10mMultiple Airlines
Sat 30/807:35KIX - SOU
3 stops39h 25mMultiple Airlines
Deal found 9/7£1,114
Sat 23/809:20SOU - KIX
2 stops40h 05mKLM
Sat 30/812:00KIX - SOU
1 stop28h 45mKLM
Deal found 9/7£1,366
Sat 23/809:40SOU - KIX
2 stops47h 45mQatar Airways
Sat 30/809:55KIX - SOU
3 stops41h 35mQatar Airways
Deal found 9/7£2,091

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 11 July 2025.
Use the filters below to find and compare flights from Portsmouth to Osaka that are best for you.

Fly from

Portsmouth

Fly to

Osaka

Route

Depart

Return

Price

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Sat 23/8

09:20-20:30

2 stops27h 10m

Osaka Kansai Intl

Sat 30/8

07:35-15:00

3 stops39h 25m

£1,114

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Sat 23/8

09:20-09:25

2 stops40h 05m

Osaka Kansai Intl

Sat 30/8

12:00-08:45

1 stop28h 45m

£1,366

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Sat 23/8

09:40-17:25

2 stops47h 45m

Osaka Kansai Intl

Sat 30/8

09:55-19:30

3 stops41h 35m

£2,091

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Mon 15/9

08:40-12:45

2 stops20h 05m

£764

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Mon 15/9

09:20-10:20

1 stop17h 00m

£789

Flights are sorted by cheapest return flights first.

Deals found on 10/7

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

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

Currently, November is the cheapest month in which you can book a flight from Portsmouth to Osaka (average of £660). Flying from Portsmouth to Osaka in July is currently the most expensive (average of £1,386). 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 OSA?

Find hourly flight availability from Portsmouth to Osaka. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 11 July 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Portsmouth to Osaka as you normally would.

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 11 July 2025.
Check out reviews from past customers who have flown with KLM and Qatar Airways 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.

Crew

8.4

Comfort

7.7

Boarding

7.8

Entertainment

7.1

Overall

7.8

Food

7.3

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Crew

8.4

Comfort

7.7

Boarding

7.8

Entertainment

7.1

Overall

7.8

Food

7.3

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Crew

8.4

Comfort

7.7

Boarding

7.8

Entertainment

7.1

Overall

7.8

Food

7.3

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

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.

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

    Currently, November is the cheapest month in which you can book a flight from Portsmouth to Osaka (average of £660). Flying from Portsmouth to Osaka in July is currently the most expensive (average of £1,386). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 10 airlines flying from Portsmouth to Osaka

Discover the top 10 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 11 July 2025.
AirlineCheapestAverageFlexibilityOn-time
China EasternCheapest£320Average£490FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
Air ChinaCheapest£361Average£531FlexibilityNo cancel feeOn-time67%
Search Air China flights
China SouthernCheapest£415Average£619FlexibilityNo cancel feeOn-time69%
Search China Southern flights
Shenzhen AirlinesCheapest£429Average£528FlexibilityNo cancel feeOn-time63%
Search Shenzhen Airlines flights
Japan AirlinesCheapest£637Average£1,036FlexibilityNo cancel feeOn-time79%
Search Japan Airlines flights
Cathay PacificCheapest£663Average£797FlexibilityNo cancel feeOn-time72%
Search Cathay Pacific flights
Etihad AirwaysCheapest£683Average£773FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
FinnairCheapest£711Average£817FlexibilityNo cancel feeOn-time76%
Search Finnair flights
KLMCheapest£716Average£935FlexibilityNo cancel feeOn-time75%
Search KLM flights
Asiana AirlinesCheapest£719Average£845FlexibilityNo cancel feeOn-time76%
Search Asiana Airlines 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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