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Cheap flights from Portsmouth to Osaka from £1,355

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 18/1. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — OSA
11 Jan — 18 Jan1
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 12 December 2025.

Sun 18/109:30SOU - KIX
2 stops21h 55mQatar Airways
Thu 22/117:55KIX - SOU
2 stops34h 45mQatar Airways
Deal found 9/12£1,355
Sun 29/309:10SOU - KIX
2 stops24h 15mMultiple Airlines
Thu 16/418:55KIX - SOU
2 stops32h 35mMultiple Airlines
Deal found 11/12£1,721
Mon 30/320:00SOU - KIX
2 stops37h 25mQatar Airways
Thu 16/418:55KIX - SOU
2 stops32h 35mQatar Airways
Deal found 11/12£1,652
Mon 30/320:00SOU - KIX
2 stops37h 25mQatar Airways
Wed 15/418:55KIX - SOU
2 stops32h 35mQatar Airways
Deal found 11/12£1,652
Sat 28/309:30SOU - KIX
2 stops46h 55mQatar Airways
Thu 16/418:55KIX - SOU
2 stops32h 35mQatar Airways
Deal found 11/12£1,683
Thu 26/309:30SOU - KIX
2 stops21h 55mQatar Airways
Wed 15/418:55KIX - SOU
2 stops32h 35mQatar Airways
Deal found 11/12£1,703
Sun 29/309:10SOU - KIX
2 stops24h 15mQatar Airways
Thu 16/418:55KIX - SOU
2 stops32h 35mQatar Airways
Deal found 11/12£1,730
Tue 31/309:10SOU - KIX
2 stops24h 15mQatar Airways
Tue 14/418:55KIX - SOU
2 stops32h 35mQatar Airways
Deal found 11/12£1,747
Tue 31/309:10SOU - KIX
2 stops24h 15mQatar Airways
Sun 19/418:55KIX - SOU
2 stops32h 35mQatar Airways
Deal found 11/12£1,774
Tue 31/309:10SOU - KIX
2 stops24h 15mQatar Airways
Sat 18/418:55KIX - SOU
2 stops32h 35mQatar Airways
Deal found 11/12£1,816

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 12 December 2025.

Round-trip from

£1,355

Popular in

July

Cheapest in

November

Average price

£937
Qatar Airways
  • Qatar Airways
  • 18/1-22/1
  • 4 total stops
  • 56h 40m total
  • Portsmouth to Osaka
Search Deals
Highest demand for flights based on searches. 14% 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 12 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

Sun 18/1

09:30-16:25

2 stops21h 55m

Osaka Kansai Intl

Thu 22/1

17:55-19:40

2 stops34h 45m

£1,355

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Mon 30/3

20:00-17:25

2 stops37h 25m

Osaka Kansai Intl

Thu 16/4

18:55-19:30

2 stops32h 35m

£1,652

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Mon 30/3

20:00-17:25

2 stops37h 25m

Osaka Kansai Intl

Wed 15/4

18:55-19:30

2 stops32h 35m

£1,652

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Sat 28/3

09:30-17:25

2 stops46h 55m

Osaka Kansai Intl

Thu 16/4

18:55-19:30

2 stops32h 35m

£1,683

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Thu 26/3

09:30-16:25

2 stops21h 55m

Osaka Kansai Intl

Wed 15/4

18:55-19:30

2 stops32h 35m

£1,703

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Sun 29/3

09:10-17:25

2 stops24h 15m

Osaka Kansai Intl

Thu 16/4

18:55-19:30

2 stops32h 35m

£1,721

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Sun 29/3

09:10-17:25

2 stops24h 15m

Osaka Kansai Intl

Thu 16/4

18:55-19:30

2 stops32h 35m

£1,730

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Tue 31/3

09:10-17:25

2 stops24h 15m

Osaka Kansai Intl

Tue 14/4

18:55-19:30

2 stops32h 35m

£1,747

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Tue 31/3

09:10-17:25

2 stops24h 15m

Osaka Kansai Intl

Sun 19/4

18:55-19:30

2 stops32h 35m

£1,774

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Tue 31/3

09:10-17:25

2 stops24h 15m

Osaka Kansai Intl

Sat 18/4

18:55-19:30

2 stops32h 35m

£1,816

Flights are sorted by cheapest return flights first.

Deals found on 9/12

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 £308). Flying from Portsmouth to Osaka in July is currently the most expensive (average of £722). 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 12 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 12 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
1,432 reviews
Check prices

Food

7.2

Comfort

7.6

Crew

8.3

Entertainment

7.1

Overall

7.7

Boarding

7.8

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
1,432 reviews
KLM
7.7
Good
1,432 reviews
Check prices

Food

7.2

Comfort

7.6

Crew

8.3

Entertainment

7.1

Overall

7.7

Boarding

7.8

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?

    Qatar Airways can get you from Portsmouth to Osaka in just under 21h 55m. 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.

  • 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 £308). Flying from Portsmouth to Osaka in July is currently the most expensive (average of £722). 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 12 December 2025.
AirlineCheapestAverageFlexibilityOn-time
China EasternCheapest£394Average£601FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
China SouthernCheapest£431Average£537FlexibilityNo cancel feeOn-time69%
Search China Southern flights
Air ChinaCheapest£438Average£653FlexibilityNo cancel feeOn-time67%
Search Air China flights
Shenzhen AirlinesCheapest£452Average£579FlexibilityNo cancel feeOn-time63%
Search Shenzhen Airlines flights
ANACheapest£681Average£1,038FlexibilityNo cancel feeOn-time80%
Search ANA flights
Cathay PacificCheapest£687Average£854FlexibilityNo cancel feeOn-time72%
Search Cathay Pacific flights
FinnairCheapest£721Average£935FlexibilityNo cancel feeOn-time76%
Search Finnair flights
KLMCheapest£727Average£866FlexibilityNo cancel feeOn-time75%
Search KLM flights
Etihad AirwaysCheapest£739Average£1,061FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
Asiana AirlinesCheapest£759Average£945FlexibilityNo 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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