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Cheap flights from Portsmouth to Osaka from £1,227

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/2. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — OSA
26 Jan — 2 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Portsmouth to Osaka

Enter your travel dates to find the best prices.

Best flights from Portsmouth to Osaka
Discover carefully curated flight deals from Portsmouth to Osaka that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 27 December 2025.

Mon 9/209:25SOU - KIX
1 stop16h 55mKLM
Mon 16/212:45KIX - SOU
2 stops37h 20mKLM
Deal found 26/12£1,227
Tue 3/220:30SOU - KIX
2 stops34h 55mMultiple Airlines
Tue 17/217:55KIX - SOU
2 stops27h 00mMultiple Airlines
Deal found 26/12£1,347
Sun 18/109:30SOU - KIX
2 stops21h 55mQatar Airways
Thu 22/117:55KIX - SOU
2 stops34h 45mQatar Airways
Deal found 26/12£1,361
Tue 3/212:25SOU - KIX
2 stops43h 00mQatar Airways
Mon 16/217:55KIX - SOU
2 stops30h 40mQatar Airways
Deal found 26/12£1,412
Mon 2/220:10SOU - KIX
2 stops59h 15mQatar Airways
Mon 16/217:55KIX - SOU
2 stops30h 40mQatar Airways
Deal found 26/12£1,418
Sun 1/209:30SOU - KIX
2 stops21h 55mQatar Airways
Mon 16/217:55KIX - SOU
2 stops30h 40mQatar Airways
Deal found 26/12£1,438
Fri 6/220:10SOU - KIX
2 stops35h 15mQatar Airways
Mon 16/217:55KIX - SOU
2 stops30h 40mQatar Airways
Deal found 26/12£1,438
Sat 31/109:30SOU - KIX
2 stops45h 55mQatar Airways
Mon 16/217:55KIX - SOU
2 stops30h 40mQatar Airways
Deal found 26/12£1,440
Tue 3/212:25SOU - KIX
2 stops43h 00mQatar Airways
Fri 20/217:55KIX - SOU
2 stops54h 40mQatar Airways
Deal found 26/12£1,447
Mon 2/220:10SOU - KIX
2 stops59h 15mQatar Airways
Fri 20/217:55KIX - SOU
2 stops54h 40mQatar Airways
Deal found 26/12£1,452

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 27 December 2025.

Round-trip from

£1,178

Popular in

July

Cheapest in

May

Average price

£927
9/2-16/2
  • 9/2-16/2
  • 4 total stops
  • 110h 55m total
  • Portsmouth to Osaka
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£89 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£20 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 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 27 December 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

Mon 9/2

09:25-11:20

1 stop16h 55m

Osaka Kansai Intl

Mon 16/2

12:45-17:05

2 stops37h 20m

£1,227

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Tue 3/2

20:30-16:25

2 stops34h 55m

Osaka Kansai Intl

Tue 17/2

17:55-11:55

2 stops27h 00m

£1,347

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Sun 18/1

09:30-16:25

2 stops21h 55m

Osaka Kansai Intl

Thu 22/1

17:55-19:40

2 stops34h 45m

£1,361

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Tue 3/2

12:25-16:25

2 stops43h 00m

Osaka Kansai Intl

Mon 16/2

17:55-15:35

2 stops30h 40m

£1,412

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Mon 2/2

20:10-16:25

2 stops59h 15m

Osaka Kansai Intl

Mon 16/2

17:55-15:35

2 stops30h 40m

£1,418

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Sun 1/2

09:30-16:25

2 stops21h 55m

Osaka Kansai Intl

Mon 16/2

17:55-15:35

2 stops30h 40m

£1,438

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Fri 6/2

20:10-16:25

2 stops35h 15m

Osaka Kansai Intl

Mon 16/2

17:55-15:35

2 stops30h 40m

£1,438

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Sat 31/1

09:30-16:25

2 stops45h 55m

Osaka Kansai Intl

Mon 16/2

17:55-15:35

2 stops30h 40m

£1,440

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Tue 3/2

12:25-16:25

2 stops43h 00m

Osaka Kansai Intl

Fri 20/2

17:55-15:35

2 stops54h 40m

£1,447

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Mon 2/2

20:10-16:25

2 stops59h 15m

Osaka Kansai Intl

Fri 20/2

17:55-15:35

2 stops54h 40m

£1,452

Flights are sorted by cheapest return flights first.

Deals found on 25/12

Showing 1-10 of 16 results
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

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

Currently, March is the cheapest month in which you can book a flight from Portsmouth to Osaka (average of £305). Flying from Portsmouth to Osaka in July is currently the most expensive (average of £716). 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 27 December 2025.

A simple way to save on the total cost of your ticket is to fly from Portsmouth to Osaka in the afternoon. If you’re flexible enough to do this you can expect to save up to 14% on your trip compared to booking a flight in the evening.

What is the cheapest day to fly from Portsmouth to Osaka?

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

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

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 27 December 2025.
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
7.7
Good
1,434 reviews
Check prices

Crew

8.3

Entertainment

7.1

Boarding

7.7

Comfort

7.6

Overall

7.7

Food

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
KLM
7.7
Good
1,434 reviews
KLM
7.7
Good
1,434 reviews
Check prices

Crew

8.3

Entertainment

7.1

Boarding

7.7

Comfort

7.6

Overall

7.7

Food

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle

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.

  • How long is the flight from Portsmouth to Osaka?

    KLM and Qatar Airways can get you from Portsmouth to Osaka in just under 16h 55m. Your travel time can differ by up to 5h. Airlines will cover a distance of 5970 mi. This flight may include one or multiple stops.

  • 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, March is the cheapest month in which you can book a flight from Portsmouth to Osaka (average of £305). Flying from Portsmouth to Osaka in July is currently the most expensive (average of £716). 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 27 December 2025.
AirlineCheapestAverageFlexibilityOn-time
China EasternCheapest£390Average£594FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
China SouthernCheapest£428Average£533FlexibilityNo cancel feeOn-time69%
Search China Southern flights
Air ChinaCheapest£434Average£650FlexibilityNo cancel feeOn-time67%
Search Air China flights
Shenzhen AirlinesCheapest£448Average£574FlexibilityNo cancel feeOn-time63%
Search Shenzhen Airlines flights
ANACheapest£675Average£1,030FlexibilityNo cancel feeOn-time80%
Search ANA flights
Cathay PacificCheapest£682Average£850FlexibilityNo cancel feeOn-time72%
Search Cathay Pacific flights
FinnairCheapest£715Average£927FlexibilityNo cancel feeOn-time76%
Search Finnair flights
KLMCheapest£721Average£858FlexibilityNo cancel feeOn-time75%
Search KLM flights
Etihad AirwaysCheapest£733Average£1,052FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
Asiana AirlinesCheapest£768Average£952FlexibilityNo cancel feeOn-time76%
Search Asiana 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 Osaka?

Cheapflights helps you search for flights from Portsmouth to Osaka via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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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