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Cheap flights from Portsmouth to Osaka from £982

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 14/12. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — OSA
26 Apr — 3 May1
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 27 March 2026.

Mon 14/1208:40
SOU
-
KIX
2 stops27h 20m
Multiple Airlines
Mon 4/109:20
KIX
-
SOU
2 stops32h 30m
Multiple Airlines
Deal found 24/3£982
Sat 9/520:00
SOU
-
KIX
2 stops31h 50m
Multiple Airlines
Sat 16/510:05
KIX
-
SOU
3 stops41h 25m
Multiple Airlines
Deal found 25/3£1,006
Thu 7/506:50
SOU
-
KIX
2 stops21h 55m
Multiple Airlines
Thu 14/518:20
KIX
-
SOU
3 stops34h 25m
Multiple Airlines
Deal found 23/3£1,166
Tue 21/412:35
SOU
-
KIX
2 stops44h 40m
Multiple Airlines
Tue 28/423:45
KIX
-
SOU
2 stops41h 40m
Multiple Airlines
Deal found 24/3£1,193
Tue 1/920:00
SOU
-
KIX
2 stops37h 25m
Qatar Airways
Mon 14/918:55
KIX
-
SOU
2 stops32h 35m
Qatar Airways
Deal found 25/3£1,498

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 March 2026.

Round-trip from

£1,006

Popular in

July

Cheapest in

January

Average price

£751
9/5-16/5
  • 9/5-16/5
  • 5 total stops
  • 73h 15m total
  • Portsmouth to Osaka
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£90 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£18 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 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 27 March 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
Fastest return journey

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Thu 7/5

06:50-12:45

2 stops21h 55m

Osaka Kansai Intl

Thu 14/5

18:20-20:45

3 stops34h 25m

£1,166

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Tue 1/9

20:00-17:25

2 stops37h 25m

Osaka Kansai Intl

Mon 14/9

18:55-19:30

2 stops32h 35m

£1,498

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Wed 2/9

09:10-17:25

2 stops24h 15m

Osaka Kansai Intl

Mon 14/9

18:55-19:30

2 stops32h 35m

£1,498

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Tue 21/4

17:20-12:10

3 stops34h 50m

Osaka Kansai Intl

Tue 28/4

22:25-12:55

2 stops22h 30m

£1,501

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Sun 6/9

09:10-17:25

2 stops24h 15m

Osaka Kansai Intl

Mon 14/9

18:55-19:30

2 stops32h 35m

£1,524

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Fri 4/9

20:00-17:25

2 stops37h 25m

Osaka Kansai Intl

Thu 17/9

18:55-14:45

2 stops27h 50m

£1,697

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Sun 6/9

09:10-17:25

2 stops24h 15m

Osaka Kansai Intl

Tue 15/9

18:55-19:30

2 stops32h 35m

£1,833

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Sun 6/9

09:10-17:25

2 stops24h 15m

Osaka Kansai Intl

Sun 20/9

18:55-19:30

2 stops32h 35m

£1,858

Flights are sorted by cheapest return flights first.

Deals found on 23/3

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
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, May is the cheapest month in which you can book a flight from Portsmouth to Osaka (average of £366). Flying from Portsmouth to Osaka in July is currently the most expensive (average of £712). 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 March 2026.

A simple way to save on the total cost of your ticket is to fly from Portsmouth to Osaka in the evening. If you’re flexible enough to do this you can expect to save up to 21% on your trip compared to booking a flight in the morning.

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 March 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
1,478 reviews
Check prices

Boarding

7.8

Food

7.3

Comfort

7.6

Overall

7.8

Entertainment

7.1

Crew

8.4

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
KLM
7.8
Good
1,478 reviews
KLM
7.8
Good
1,478 reviews
Check prices

Boarding

7.8

Food

7.3

Comfort

7.6

Overall

7.8

Entertainment

7.1

Crew

8.4

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas

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 37h 25m. 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, May is the cheapest month in which you can book a flight from Portsmouth to Osaka (average of £366). Flying from Portsmouth to Osaka in July is currently the most expensive (average of £712). 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 March 2026.
AirlineCheapestAverageFlexibilityOn-time
China EasternCheapest£400Average£623FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
China SouthernCheapest£432Average£550FlexibilityNo cancel feeOn-time69%
Search China Southern flights
Air ChinaCheapest£477Average£687FlexibilityNo cancel feeOn-time67%
Search Air China flights
Cathay PacificCheapest£695Average£840FlexibilityNo cancel feeOn-time72%
Search Cathay Pacific flights
Asiana AirlinesCheapest£759Average£1,053FlexibilityNo cancel feeOn-time76%
Search Asiana Airlines flights
KLMCheapest£789Average£1,160FlexibilityNo cancel feeOn-time75%
Search KLM flights
Japan AirlinesCheapest£834Average£1,141FlexibilityNo cancel feeOn-time79%
Search Japan Airlines flights
Etihad AirwaysCheapest£879Average£1,181FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
Thai AirwaysCheapest£1,006Average£1,143FlexibilityNo cancel feeOn-time77%
Search Thai Airways flights
EmiratesCheapest£1,026Average£1,118FlexibilityNo cancel feeOn-time75%
Search Emirates 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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