In terms of precipitation, rainfall in Osaka ranges from 40.0 - 200.0 inches per month. June is typically the wettest month, when rainfall can reach 200.0 mm. January is typically the driest time to visit Osaka when rainfall is around 40.0 mm.

If weather is an important factor for your trip to Osaka, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 29.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 6.0 C).

What is the cheapest time of day to fly from P0R to OSA?

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.

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.

£621+ Cheap Flights from Portsmouth to Osaka

Cheap flight deals from Portsmouth to Osaka

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

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 17 September 2026.

Thu 29/1012:25 -

2 stops44h 35m

Thu 5/1114:20 -

2 stops30h 35m

Deal found 14/9£821

Tue 3/1120:00 -

2 stops35h 25m

Tue 24/1117:55 -

2 stops34h 35m

Deal found 15/9£1,476

Mon 2/1120:00 -

2 stops59h 25m

Tue 24/1117:55 -

2 stops34h 35m

Deal found 15/9£1,485

Wed 28/1020:00 -

2 stops35h 25m

Tue 24/1117:55 -

2 stops34h 35m

Deal found 15/9£1,517

Fri 30/1020:00 -

2 stops35h 25m

Tue 24/1117:55 -

2 stops34h 35m

Deal found 15/9£1,529

Tue 3/1120:00 -

2 stops35h 25m

Thu 26/1117:55 -

2 stops34h 35m

Deal found 15/9£1,710

Mon 2/1120:00 -

2 stops59h 25m

Thu 26/1117:55 -

2 stops34h 35m

Deal found 15/9£1,719

Sat 31/1010:15 -

2 stops21h 10m

Tue 24/1117:55 -

2 stops34h 35m

Deal found 15/9£1,736

Wed 28/1020:00 -

2 stops35h 25m

Thu 26/1117:55 -

2 stops34h 35m

Deal found 15/9£1,751

Find flight deals from Portsmouth to Osaka

Round-trip from	£821
One-way from	£621
Popular in	July
Cheapest in	January
Average price	£630

29/10-5/11
4 total stops
75h 10m total
Portsmouth to Osaka

Search Deals

20/2-31/12
2 total stops
22h 05m total
Portsmouth to Osaka

Search Deals

Highest demand for flights based on searches. 18% potential increase in price (£118 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 September 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Fastest return journey

SouthamptonOsaka

SOU Southampton Eastleigh - KIX Osaka Kansai Intl

SOUKIX

Southampton Eastleigh

Sat 20/2

09:20-16:25

2 stops22h 05m

Osaka Kansai Intl

Wed 31/12

00:00-16:00

Nonstop0h 00m

£621

SouthamptonOsaka

SOU Southampton Eastleigh - KIX Osaka Kansai Intl

SOUKIX

Southampton Eastleigh

Fri 19/2

20:00-16:25

2 stops35h 25m

Osaka Kansai Intl

Wed 31/12

00:00-16:00

Nonstop0h 00m

£627

SouthamptonOsaka

SOU Southampton Eastleigh - KIX Osaka Kansai Intl

SOUKIX

Southampton Eastleigh

Sun 21/2

12:25-16:25

2 stops43h 00m

Osaka Kansai Intl

Wed 31/12

00:00-16:00

Nonstop0h 00m

£698

SouthamptonOsaka

SOU Southampton Eastleigh - KIX Osaka Kansai Intl

SOUKIX

Southampton Eastleigh

Thu 18/2

09:20-16:25

2 stops22h 05m

Osaka Kansai Intl

Sun 7/3

17:55-11:55

2 stops27h 00m

£972

SouthamptonOsaka

SOU Southampton Eastleigh - KIX Osaka Kansai Intl

SOUKIX

Southampton Eastleigh

Sun 21/2

09:20-16:25

2 stops22h 05m

Osaka Kansai Intl

Sun 7/3

17:55-19:30

2 stops34h 35m

£999

SouthamptonOsaka

SOU Southampton Eastleigh - KIX Osaka Kansai Intl

SOUKIX

Southampton Eastleigh

Sat 20/2

09:20-16:25

2 stops22h 05m

Osaka Kansai Intl

Sun 7/3

17:55-19:30

2 stops34h 35m

£999

SouthamptonOsaka

SOU Southampton Eastleigh - KIX Osaka Kansai Intl

SOUKIX

Southampton Eastleigh

Thu 29/10

17:35-13:20

3 stops34h 45m

Osaka Kansai Intl

Thu 5/11

14:20-08:55

3 stops51h 35m

£1,028

SouthamptonOsaka

SOU Southampton Eastleigh - KIX Osaka Kansai Intl

SOUKIX

Southampton Eastleigh

Fri 19/2

09:20-21:05

3 stops26h 45m

Osaka Kansai Intl

Wed 31/12

00:00-16:00

Nonstop0h 00m

£1,226

SouthamptonOsaka

SOU Southampton Eastleigh - KIX Osaka Kansai Intl

SOUKIX

Southampton Eastleigh

Wed 10/3

09:20-16:25

2 stops22h 05m

Osaka Kansai Intl

Wed 24/3

14:40-19:30

3 stops37h 50m

£1,582

SouthamptonOsaka

SOU Southampton Eastleigh - KIX Osaka Kansai Intl

SOUKIX

Southampton Eastleigh

Sun 14/3

09:20-16:25

2 stops22h 05m

Osaka Kansai Intl

Fri 26/3

17:55-11:55

2 stops27h 00m

£1,667

Flights are sorted by cheapest return flights first.

Deals found on 15/9

Showing 1-10 of 15 resultsSorted 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.

SOU-KIX

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

P0R-OSA

SOU-KIX

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

Related info for your journey

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

Alternative routes

Complete your trip

Direct flights to Japan

Flights by cabin class

Osaka flight routes

Other flight options

Popular flights

Top destinations

Alternative routes for Portsmouth to Osaka

Heathrow to Kansai Intl flights

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Heathrow to Osaka Itami flights

Stansted to Kansai Intl flights

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Manchester to Osaka Itami flights

Newcastle upon Tyne to Kansai Intl flights

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Edinburgh to Osaka Itami flights

Newcastle upon Tyne to Osaka Itami flights

Stansted to Osaka Itami flights

Southampton to Kansai Intl flights

Birmingham to Kansai Intl flights

Norwich to Kansai Intl flights

Bristol to Kansai Intl flights

Birmingham to Osaka Itami flights

Top 8 airlines flying from Portsmouth to Osaka

Airline	Cheapest	Average	Flexibility	On-time
China Eastern	Cheapest£365	Average£617	FlexibilityNo cancel fee	On-time62%	Search China Eastern flights
China Southern	Cheapest£432	Average£450	FlexibilityNo cancel fee	On-time69%	Search China Southern flights
Air China	Cheapest£456	Average£746	FlexibilityNo cancel fee	On-time67%	Search Air China flights
KLM	Cheapest£561	Average£677	FlexibilityNo cancel fee	On-time75%	Search KLM flights
Etihad Airways	Cheapest£636	Average£1,160	FlexibilityNo cancel fee	On-time75%	Search Etihad Airways flights
Cathay Pacific	Cheapest£741	Average£903	FlexibilityNo cancel fee	On-time72%	Search Cathay Pacific flights
Asiana Airlines	Cheapest£747	Average£891	FlexibilityNo cancel fee	On-time76%	Search Asiana Airlines flights
Emirates	Cheapest£989	Average£1,079	FlexibilityNo cancel fee	On-time75%	Search Emirates flights

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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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Cheap flights from Portsmouth to Osaka from £621

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 20/2. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Portsmouth to Osaka

Cheapest flights from Portsmouth to OsakaExplore 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 17 September 2026.

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 17 September 2026.

Best flights from Portsmouth to OsakaDiscover 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 17 September 2026.

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 17 September 2026.

Last-minute flights from Portsmouth to OsakaDiscover last-minute flight deals from Portsmouth to Osaka. Data last updated 17 September 2026 and is based on user searches.

Discover last-minute flight deals from Portsmouth to Osaka. Data last updated 17 September 2026 and is based on user searches.

One-way flights from Portsmouth to OsakaSearch for one-way flight options from Portsmouth to Osaka. Find affordable one-way fares based on user searches. Data last updated 17 September 2026.

Search for one-way flight options from Portsmouth to Osaka. Find affordable one-way fares based on user searches. Data last updated 17 September 2026.

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Best time to book a flight from Portsmouth to Osaka

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Cheapflights Insights

Related info for your journey

Can I find deals for flights from Portsmouth to Osaka that include hotel bookings?

How can I find direct flights from Portsmouth to Osaka?

Can I find deals for business class flights from Portsmouth to Osaka?

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.

Alternative routes for Portsmouth to Osaka

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Osaka by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to Japan

Book a non-stop flight to one of these other cities located in Japan.

Search flights from Portsmouth to Osaka by cabin class

Find flights from Portsmouth to Osaka, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Other flights to Osaka

Explore flights to Osaka departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 17 September 2026.

Portsmouth and Osaka flights

Browse other Portsmouth and Osaka flight options. Last updated on 17 September 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Portsmouth to Osaka flights

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Top 8 airlines flying from Portsmouth to Osaka

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

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

Can Cheapflights find flights from Portsmouth to Osaka with no change fees?

Can Cheapflights notify me if prices for flights from Portsmouth to Osaka become cheaper?

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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 17 September 2026.

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 17 September 2026.

Last-minute flights from Portsmouth to Osaka
Discover last-minute flight deals from Portsmouth to Osaka. Data last updated 17 September 2026 and is based on user searches.

One-way flights from Portsmouth to Osaka
Search for one-way flight options from Portsmouth to Osaka. Find affordable one-way fares based on user searches. Data last updated 17 September 2026.