How long is the flight from Portsmouth to Japan?

KLM can get you from Portsmouth to Japan in just under 33h 10m. Your travel time can differ by up to . There are 6006 mi between Portsmouth and Japan.

In terms of precipitation, rainfall in Japan ranges from 50.0 - 210.0 inches per month. September is typically the wettest month, when rainfall can reach 210.0 mm. January is typically the driest time to visit Japan when rainfall is around 50.0 mm.

If weather is an important factor for your trip to Japan, 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 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 6.0 C).

What are the most popular routes from Portsmouth to Japan?

When deciding which route to take from Portsmouth to Japan consider Southampton Eastleigh - Tokyo Narita, Southampton Eastleigh - Tokyo Haneda or Southampton Eastleigh - Osaka Kansai Intl as they are the most popular.

What are the most popular airlines that fly from Portsmouth to Japan?

The most popular airlines flying from Portsmouth to Japan are Air China, Cathay Pacific and Japan Airlines. Something to consider prior to booking your flight.

How far in advance should I book a flight from Portsmouth to Japan?

To save on the cost of your flight from Portsmouth to Japan, book at least 31 days before your planned departure. Booking around this time can save you about 10% on the cost of this flight compared to booking a flight leaving this week. We have found prices from £570 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as £651.

What is the cheapest month to fly from Portsmouth to Japan?

The best pricing can be found in the month of November. Prices to Japan from Portsmouth average £725. You can even find prices in November for less than £725, as users have found deals to Japan from as low as £375. The month of July appears to be one of the more expensive times to travel to Japan from Portsmouth. Flying in the targeted month can save you up to 36%.

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

Yes. In addition to deals on Portsmouth to Japan flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Portsmouth to Japan?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portsmouth to Japan.

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

Yes. Cheapflights offers flight deals from Portsmouth to Japan by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£788+ Cheap Flights from Portsmouth to Japan

Cheap flight deals from Portsmouth to Japan

Round-trip from	£877
One-way from	£788
Popular in	July
Cheapest in	November
Average price	£988

22/11-29/11
4 total stops
100h 30m total
Portsmouth to Japan

Search Deals

19/11
2 total stops
24h 15m total
Portsmouth to Japan

Search Deals

Highest demand for flights based on searches. 15% potential increase in price (£95 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 August 2025

Search Deals

Find flight deals from Portsmouth to Japan

Cheapest flights from Portsmouth to Japan
Explore the most affordable flight options available from Portsmouth to Japan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 August 2025.

Sat 22/1109:30SOU - NRT

2 stops41h 10mMultiple Airlines

Sat 29/1117:20NRT - SOU

2 stops59h 20mMultiple Airlines

Deal found 27/8£877

Sun 12/1018:25SOU - NRT

3 stops33h 35mMultiple Airlines

Sun 19/1014:35NRT - SOU

2 stops26h 10mMultiple Airlines

Deal found 28/8£904

Mon 1/917:35SOU - NRT

1 stop33h 10mKLM

Thu 18/912:35NRT - SOU

1 stop28h 10mKLM

Deal found 27/8£935

Mon 1/912:10SOU - NRT

3 stops24h 50mMultiple Airlines

Thu 18/908:55NRT - SOU

3 stops42h 40mMultiple Airlines

Deal found 27/8£936

Mon 1/909:20SOU - HND

2 stops29h 05mMultiple Airlines

Thu 18/907:10HND - SOU

2 stops33h 35mMultiple Airlines

Deal found 27/8£960

Tue 7/1017:35SOU - NRT

1 stop33h 10mKLM

Tue 14/1008:55NRT - SOU

1 stop16h 05mKLM

Deal found 28/8£1,048

Tue 7/1020:00SOU - NRT

3 stops31h 55mMultiple Airlines

Tue 14/1020:15NRT - SOU

3 stops31h 15mMultiple Airlines

Deal found 28/8£1,073

Sun 12/1018:25SOU - HND

2 stops35h 55mMultiple Airlines

Sun 19/1015:40HND - SOU

2 stops25h 05mMultiple Airlines

Deal found 28/8£1,076

Sat 22/1109:25SOU - HND

3 stops26h 25mMultiple Airlines

Sat 29/1108:40HND - SOU

3 stops33h 10mMultiple Airlines

Deal found 27/8£1,095

Sat 22/1117:30SOU - NRT

1 stop33h 15mKLM

Sat 29/1113:35NRT - SOU

1 stop28h 15mKLM

Deal found 27/8£1,114

Tue 7/1017:35SOU - HND

2 stops54h 15mMultiple Airlines

Tue 14/1007:05HND - SOU

2 stops33h 40mMultiple Airlines

Deal found 28/8£1,120

Sat 11/1016:25SOU - KIX

3 stops35h 15mMultiple Airlines

Sat 18/1014:40KIX - SOU

2 stops26h 05mMultiple Airlines

Deal found 27/8£1,147

Best flights from Portsmouth to Japan
Discover carefully curated flight deals from Portsmouth to Japan that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 29 August 2025.

Sat 22/1109:30SOU - NRT

2 stops41h 10mMultiple Airlines

Sat 29/1117:20NRT - SOU

2 stops59h 20mMultiple Airlines

Deal found 27/8£877

Tue 7/1017:35SOU - NRT

1 stop33h 10mKLM

Tue 14/1008:55NRT - SOU

1 stop16h 05mKLM

Deal found 28/8£1,048

Thu 15/120:10SOU - NRT

2 stops36h 45mQatar Airways

Mon 26/121:55NRT - SOU

2 stops30h 45mQatar Airways

Deal found 27/8£1,202

Sun 12/1018:25SOU - NRT

3 stops33h 35mMultiple Airlines

Sun 19/1014:35NRT - SOU

2 stops26h 10mMultiple Airlines

Deal found 28/8£904

Fri 6/209:00SOU - HND

2 stops25h 25mKLM

Tue 10/209:05HND - SOU

2 stops32h 45mKLM

Deal found 27/8£1,113

Tue 7/1020:00SOU - NRT

3 stops31h 55mMultiple Airlines

Tue 14/1020:15NRT - SOU

3 stops31h 15mMultiple Airlines

Deal found 28/8£1,073

Sat 22/1117:30SOU - NRT

1 stop33h 15mKLM

Sat 29/1113:35NRT - SOU

1 stop28h 15mKLM

Deal found 27/8£1,114

Sun 12/1018:25SOU - HND

2 stops35h 55mMultiple Airlines

Sun 19/1015:40HND - SOU

2 stops25h 05mMultiple Airlines

Deal found 28/8£1,076

Sat 11/1018:05SOU - KIX

1 stop32h 15mKLM

Sat 18/1012:00KIX - SOU

1 stop28h 45mKLM

Deal found 27/8£1,179

Sat 22/1109:25SOU - HND

3 stops26h 25mMultiple Airlines

Sat 29/1108:40HND - SOU

3 stops33h 10mMultiple Airlines

Deal found 27/8£1,095

Tue 9/909:10SOU - KIX

2 stops48h 15mQatar Airways

Mon 15/918:55KIX - SOU

2 stops32h 35mQatar Airways

Deal found 28/8£1,523

Tue 7/1017:35SOU - HND

2 stops54h 15mMultiple Airlines

Tue 14/1007:05HND - SOU

2 stops33h 40mMultiple Airlines

Deal found 28/8£1,120

Last-minute flights from Portsmouth to Japan
Discover last-minute flight deals from Portsmouth to Japan. Data last updated 29 August 2025 and is based on user searches.

Sat 30/809:20SOU - NRT

2 stops25h 20mMultiple Airlines

Sun 31/822:50NRT - SOU

2 stops20h 40mMultiple Airlines

Deal found 28/8£1,605

Sun 31/809:10SOU - KIX

2 stops24h 15mQatar Airways

Tue 9/918:55KIX - SOU

2 stops32h 35mQatar Airways

Deal found 27/8£1,463

Sun 31/808:45SOU - KIX

2 stops24h 40mMultiple Airlines

Tue 9/918:55KIX - SOU

2 stops32h 35mMultiple Airlines

Deal found 27/8£1,640

Mon 1/917:35SOU - NRT

1 stop33h 10mKLM

Thu 18/912:35NRT - SOU

1 stop28h 10mKLM

Deal found 27/8£935

Mon 1/912:10SOU - NRT

3 stops24h 50mMultiple Airlines

Thu 18/908:55NRT - SOU

3 stops42h 40mMultiple Airlines

Deal found 27/8£936

Mon 1/909:20SOU - HND

2 stops29h 05mMultiple Airlines

Thu 18/907:10HND - SOU

2 stops33h 35mMultiple Airlines

Deal found 27/8£960

Thu 4/909:40SOU - KIX

2 stops23h 45mQatar Airways

Mon 15/918:55KIX - SOU

2 stops32h 35mQatar Airways

Deal found 28/8£1,565

Fri 5/909:40SOU - KIX

2 stops47h 45mQatar Airways

Mon 15/918:55KIX - SOU

2 stops32h 35mQatar Airways

Deal found 28/8£1,597

Sat 6/909:40SOU - KIX

2 stops47h 45mQatar Airways

Mon 15/918:55KIX - SOU

2 stops32h 35mQatar Airways

Deal found 28/8£1,548

Mon 8/909:40SOU - KIX

2 stops23h 45mQatar Airways

Mon 15/918:55KIX - SOU

2 stops32h 35mQatar Airways

Deal found 28/8£1,625

Tue 9/909:10SOU - KIX

2 stops48h 15mQatar Airways

Mon 15/918:55KIX - SOU

2 stops32h 35mQatar Airways

Deal found 28/8£1,523

Tue 16/909:10SOU - NRT

2 stops43h 45mQatar Airways

Wed 24/917:25NRT - SOU

2 stops34h 05mQatar Airways

Deal found 28/8£1,639

One-way flights from Portsmouth to Japan
Search for one-way flight options from Portsmouth to Japan. Find affordable one-way fares based on user searches. Data last updated 29 August 2025.

Wed 19/1108:40SOU - NRT

2 stops24h 15mMultiple Airlines

Deal found 27/8£788

Sun 14/1209:45SOU - KIX

2 stops21h 40mMultiple Airlines

Deal found 28/8£919

Thu 15/120:10SOU - NRT

2 stops36h 45mQatar Airways

Deal found 27/8£939

Thu 20/1109:30SOU - HND

2 stops30h 30mQatar Airways

Deal found 27/8£939

Wed 19/1120:10SOU - HND

2 stops43h 50mQatar Airways

Deal found 27/8£941

Mon 15/908:40SOU - KIX

2 stops24h 45mMultiple Airlines

Deal found 27/8£953

Fri 16/109:30SOU - NRT

2 stops23h 25mMultiple Airlines

Deal found 27/8£956

Sat 17/109:30SOU - NRT

2 stops23h 25mQatar Airways

Deal found 27/8£964

Fri 16/109:30SOU - HND

2 stops30h 30mQatar Airways

Deal found 27/8£964

Mon 15/917:35SOU - KIX

2 stops31h 50mKLM

Deal found 28/8£1,188

Wed 10/908:40SOU - NRT

2 stops26h 30mMultiple Airlines

Deal found 27/8£4,118

Fly from

Fly to

Route

Depart

Return

Price

SouthamptonTokyo

SOU - NRT

SOUNRT

Southampton Eastleigh

Sat 22/11

09:30-11:40

2 stops41h 10m

Tokyo Narita

Sat 29/11

17:20-19:40

2 stops59h 20m

£877

SouthamptonTokyo

SOU - NRT

SOUNRT

Southampton Eastleigh

Sun 12/10

18:25-12:00

3 stops33h 35m

Tokyo Narita

Sun 19/10

14:35-08:45

2 stops26h 10m

£904

SouthamptonTokyo

SOU - NRT

SOUNRT

Southampton Eastleigh

Tue 7/10

17:35-10:45

1 stop33h 10m

Tokyo Narita

Tue 14/10

08:55-17:00

1 stop16h 05m

£1,048

SouthamptonTokyo

SOU - NRT

SOUNRT

Southampton Eastleigh

Tue 7/10

20:00-11:55

3 stops31h 55m

Tokyo Narita

Tue 14/10

20:15-19:30

3 stops31h 15m

£1,073

SouthamptonTokyo

SOU - HND

SOUHND

Southampton Eastleigh

Sun 12/10

18:25-14:20

2 stops35h 55m

Tokyo Haneda

Sun 19/10

15:40-08:45

2 stops25h 05m

£1,076

SouthamptonTokyo

SOU - HND

SOUHND

Southampton Eastleigh

Sat 22/11

09:25-20:50

3 stops26h 25m

Tokyo Haneda

Sat 29/11

08:40-08:50

3 stops33h 10m

£1,095

SouthamptonTokyo

SOU - HND

SOUHND

Southampton Eastleigh

Fri 6/2

09:00-19:25

2 stops25h 25m

Tokyo Haneda

Tue 10/2

09:05-08:50

2 stops32h 45m

£1,113

SouthamptonTokyo

SOU - NRT

SOUNRT

Southampton Eastleigh

Sat 22/11

17:30-11:45

1 stop33h 15m

Tokyo Narita

Sat 29/11

13:35-08:50

1 stop28h 15m

£1,114

SouthamptonTokyo

SOU - HND

SOUHND

Southampton Eastleigh

Tue 7/10

17:35-07:50

2 stops54h 15m

Tokyo Haneda

Tue 14/10

07:05-08:45

2 stops33h 40m

£1,120

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Sat 11/10

16:25-11:40

3 stops35h 15m

Osaka Kansai Intl

Sat 18/10

14:40-08:45

2 stops26h 05m

£1,147

Flights are sorted by cheapest return flights first.

Deals found on 27/8

Showing 1-10 of 34 results

Best time to book a flight from Portsmouth to Japan

Have a flexible travel schedule? Discover the best time to fly to Japan 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 Japan

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

Currently, November is the cheapest month in which you can book a flight from Portsmouth to Japan (average of £550). Flying from Portsmouth to Japan in July is currently the most expensive (average of £1,239). 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 JP?

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

Reviews of airlines servicing Japan

Check out reviews from past customers who have flown with KLM from Portsmouth to Japan 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

1,383 reviews

Check prices

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.

KLM

7.8

Good

1,383 reviews

KLM

7.8

Good

1,383 reviews

Check prices

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

How long is the flight from Portsmouth to Japan?
KLM can get you from Portsmouth to Japan in just under 33h 10m. Your travel time can differ by up to . There are 6006 mi between Portsmouth and Japan.
What are the most popular routes from Portsmouth to Japan?
When deciding which route to take from Portsmouth to Japan consider Southampton Eastleigh - Tokyo Narita, Southampton Eastleigh - Tokyo Haneda or Southampton Eastleigh - Osaka Kansai Intl as they are the most popular.
Can I find deals for flights from Portsmouth to Japan that include hotel bookings?
Yes. In addition to deals on Portsmouth to Japan flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Portsmouth to Japan?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portsmouth to Japan.
Can I find deals for business class flights from Portsmouth to Japan?
Yes. Cheapflights offers flight deals from Portsmouth to Japan 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 Japan?
Currently, November is the cheapest month in which you can book a flight from Portsmouth to Japan (average of £550). Flying from Portsmouth to Japan in July is currently the most expensive (average of £1,239). 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

Top 10 airlines flying from Portsmouth to Japan

Airline	Cheapest	Average	Flexibility	On-time
China Southern	Cheapest£371	Average£550	FlexibilityNo cancel fee	On-time69%	Search China Southern flights
Shenzhen Airlines	Cheapest£417	Average£599	FlexibilityNo cancel fee	On-time63%	Search Shenzhen Airlines flights
Finnair	Cheapest£441	Average£957	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
Scandinavian Airlines	Cheapest£541	Average£937	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights
Air India	Cheapest£564	Average£647	FlexibilityNo cancel fee	On-timeN/A	Search Air India flights
Turkish Airlines	Cheapest£593	Average£1,033	FlexibilityNo cancel fee	On-time77%	Search Turkish Airlines flights
Air France	Cheapest£647	Average£999	FlexibilityNo cancel fee	On-time77%	Search Air France flights
Etihad Airways	Cheapest£658	Average£791	FlexibilityNo cancel fee	On-time75%	Search Etihad Airways flights
SWISS	Cheapest£676	Average£1,047	FlexibilityNo cancel fee	On-time79%	Search SWISS flights
KLM	Cheapest£682	Average£955	FlexibilityNo cancel fee	On-time75%	Search KLM flights

Fly with Cheapflights

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

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Portsmouth to Japan. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Portsmouth to Japan.

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

Yes! Cheapflights helps users easily find flights from Portsmouth to Japan with no change fees.

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

Of course! You can now track prices for flights from Portsmouth to Japan and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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Cheap flights from Portsmouth to Japan from £788

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 19/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Portsmouth to Japan

Keep the following information in mind while searching for Portsmouth to Japan flight deals. Data was last updated 29 August 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Portsmouth to Japan

Cheapest flights from Portsmouth to JapanExplore the most affordable flight options available from Portsmouth to Japan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 August 2025.

Explore the most affordable flight options available from Portsmouth to Japan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 August 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Portsmouth to Japan that are best for you.

Best time to book a flight from Portsmouth to Japan

Have a flexible travel schedule? Discover the best time to fly to Japan from Portsmouth with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Portsmouth to Japan

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

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

Find hourly flight availability from Portsmouth to Japan. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 29 August 2025.

Reviews of airlines servicing Japan

Get insights into the airlines that provide service to Japan. 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 Japan. Reviews last updated 29 August 2025.

Check out reviews from past customers who have flown with KLM from Portsmouth to Japan 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.

Related info for your journey

Find useful and relevant information for your journey from Portsmouth to Japan. 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 Japan?

What are the most popular routes from Portsmouth to Japan?

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

How can I find direct flights from Portsmouth to Japan?

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

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

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 Japan

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

Top 10 airlines flying from Portsmouth to Japan

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 Japan?

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

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

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

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Cheapest flights from Portsmouth to Japan
Explore the most affordable flight options available from Portsmouth to Japan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 August 2025.