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 13% on the cost of this flight compared to booking a flight leaving this week. We have found prices from £564 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as £707.

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 £706. You can even find prices in November for less than £706, as users have found deals to Japan from as low as £373. The month of August 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 38%.

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.

£1,284+ Flights from Portsmouth to Japan

Cheap flight deals from Portsmouth to Japan

Round-trip from	£970
One-way from	£726
Popular in	August
Cheapest in	November
Average price	£970

14/11-29/11
5 total stops
71h 00m total
Portsmouth to Japan

Search Deals

15/9
2 total stops
20h 05m total
Portsmouth to Japan

Search Deals

Highest demand for flights based on searches. 18% potential increase in price (£115 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 July 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 4 7월 2025.

금 14/1117:20SOU - NRT

2 stops35h 00mMultiple Airlines

토 29/1116:40NRT - SOU

3 stops36h 00mMultiple Airlines

Deal found 2/7£970

월 3/1120:10SOU - HND

2 stops43h 50mQatar Airways

토 22/1123:30HND - SOU

2 stops29h 10mQatar Airways

Deal found 1/7£1,070

금 14/1117:20SOU - HND

2 stops53h 30mMultiple Airlines

토 29/1113:45HND - SOU

2 stops51h 40mMultiple Airlines

Deal found 2/7£1,109

일 6/717:35SOU - HND

2 stops28h 20mKLM

일 13/708:50HND - SOU

2 stops31h 55mKLM

Deal found 1/7£1,267

토 16/809:20SOU - KIX

2 stops27h 10mMultiple Airlines

토 23/819:05KIX - SOU

3 stops32h 25mMultiple Airlines

Deal found 2/7£1,272

금 14/1109:00SOU - NRT

1 stop17h 45mKLM

토 29/1113:35NRT - SOU

1 stop36h 15mKLM

Deal found 2/7£1,280

월 24/1120:10SOU - NRT

2 stops36h 45mQatar Airways

화 30/1221:55NRT - SOU

2 stops30h 45mQatar Airways

Deal found 2/7£1,380

토 16/809:20SOU - KIX

1 stop17h 00mKLM

토 23/812:00KIX - SOU

1 stop28h 45mKLM

Deal found 2/7£1,794

수 6/809:10SOU - KIX

2 stops24h 15mQatar Airways

일 17/818:55KIX - SOU

2 stops32h 35mQatar Airways

Deal found 3/7£1,996

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 4 7월 2025.

금 14/1117:20SOU - NRT

2 stops35h 00mMultiple Airlines

토 29/1116:40NRT - SOU

3 stops36h 00mMultiple Airlines

Deal found 2/7£970

월 3/1120:10SOU - HND

2 stops43h 50mQatar Airways

토 22/1123:30HND - SOU

2 stops29h 10mQatar Airways

Deal found 1/7£1,070

금 14/1109:00SOU - NRT

1 stop17h 45mKLM

토 29/1113:35NRT - SOU

1 stop36h 15mKLM

Deal found 2/7£1,280

금 14/1117:20SOU - HND

2 stops53h 30mMultiple Airlines

토 29/1113:45HND - SOU

2 stops51h 40mMultiple Airlines

Deal found 2/7£1,109

월 24/1120:10SOU - NRT

2 stops36h 45mQatar Airways

화 30/1221:55NRT - SOU

2 stops30h 45mQatar Airways

Deal found 2/7£1,380

토 16/809:20SOU - KIX

2 stops27h 10mMultiple Airlines

토 23/819:05KIX - SOU

3 stops32h 25mMultiple Airlines

Deal found 2/7£1,272

토 16/809:20SOU - KIX

1 stop17h 00mKLM

토 23/812:00KIX - SOU

1 stop28h 45mKLM

Deal found 2/7£1,794

금 15/818:25SOU - HND

2 stops27h 30mKLM

금 22/808:50HND - SOU

2 stops31h 55mKLM

Deal found 1/7£1,912

수 6/809:10SOU - KIX

2 stops24h 15mQatar Airways

일 17/818:55KIX - SOU

2 stops32h 35mQatar Airways

Deal found 3/7£1,996

Last-minute flights from Portsmouth to Japan
Discover last-minute flight deals from Portsmouth to Japan. Data last updated 4 7월 2025 and is based on user searches.

일 6/717:35SOU - HND

2 stops28h 20mKLM

일 13/708:50HND - SOU

2 stops31h 55mKLM

Deal found 1/7£1,267

일 6/715:35SOU - HND

3 stops31h 20mMultiple Airlines

일 13/722:50HND - SOU

2 stops28h 40mMultiple Airlines

Deal found 1/7£1,314

목 31/718:25SOU - NRT

3 stops33h 35mMultiple Airlines

목 7/813:15NRT - SOU

3 stops34h 20mMultiple Airlines

Deal found 3/7£1,054

수 6/809:10SOU - KIX

2 stops24h 15mQatar Airways

일 17/818:55KIX - SOU

2 stops32h 35mQatar Airways

Deal found 3/7£1,996

토 16/809:20SOU - KIX

2 stops27h 10mMultiple Airlines

토 23/819:05KIX - SOU

3 stops32h 25mMultiple Airlines

Deal found 2/7£1,272

토 16/809:20SOU - KIX

1 stop17h 00mKLM

토 23/812:00KIX - SOU

1 stop28h 45mKLM

Deal found 2/7£1,794

일 17/817:35SOU - NRT

1 stop33h 10mKLM

일 24/812:35NRT - SOU

1 stop28h 10mKLM

Deal found 3/7£1,544

금 29/809:40SOU - HND

2 stops30h 15mQatar Airways

일 21/922:50HND - SOU

2 stops28h 40mQatar Airways

Deal found 2/7£1,462

일 31/809:10SOU - NRT

2 stops43h 45mQatar Airways

화 16/922:25NRT - SOU

2 stops29h 05mQatar Airways

Deal found 2/7£1,415

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 4 7월 2025.

월 15/908:40SOU - KIX

2 stops20h 05mMultiple Airlines

Deal found 3/7£726

월 15/909:20SOU - KIX

1 stop17h 00mKLM

Deal found 3/7£791

화 21/1008:40SOU - HND

2 stops31h 15mMultiple Airlines

Deal found 2/7£799

목 2/1009:40SOU - NRT

2 stops43h 15mQatar Airways

Deal found 2/7£966

월 29/909:40SOU - HND

2 stops30h 15mQatar Airways

Deal found 2/7£969

화 30/909:10SOU - KIX

2 stops48h 15mQatar Airways

Deal found 2/7£1,157

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

SouthamptonTokyo

SOU - NRT

SOUNRT

Southampton Eastleigh

금 14/11

17:20-13:20

2 stops35h 00m

Tokyo Narita

토 29/11

16:40-19:40

3 stops36h 00m

£970

SouthamptonTokyo

SOU - HND

SOUHND

Southampton Eastleigh

월 3/11

20:10-01:00

2 stops43h 50m

Tokyo Haneda

토 22/11

23:30-19:40

2 stops29h 10m

£1,070

SouthamptonTokyo

SOU - HND

SOUHND

Southampton Eastleigh

금 14/11

17:20-07:50

2 stops53h 30m

Tokyo Haneda

토 29/11

13:45-08:25

2 stops51h 40m

£1,109

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

토 16/8

09:20-20:30

2 stops27h 10m

Osaka Kansai Intl

토 23/8

19:05-19:30

3 stops32h 25m

£1,272

SouthamptonTokyo

SOU - NRT

SOUNRT

Southampton Eastleigh

금 14/11

09:00-11:45

1 stop17h 45m

Tokyo Narita

토 29/11

13:35-16:50

1 stop36h 15m

£1,280

SouthamptonTokyo

SOU - NRT

SOUNRT

Southampton Eastleigh

월 24/11

20:10-17:55

2 stops36h 45m

Tokyo Narita

화 30/12

21:55-19:40

2 stops30h 45m

£1,380

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

토 16/8

09:20-10:20

1 stop17h 00m

Osaka Kansai Intl

토 23/8

12:00-08:45

1 stop28h 45m

£1,794

SouthamptonTokyo

SOU - HND

SOUHND

Southampton Eastleigh

금 15/8

18:25-05:55

2 stops27h 30m

Tokyo Haneda

금 22/8

08:50-08:45

2 stops31h 55m

£1,912

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

수 6/8

09:10-17:25

2 stops24h 15m

Osaka Kansai Intl

일 17/8

18:55-19:30

2 stops32h 35m

£1,996

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

월 15/9

08:40-12:45

2 stops20h 05m

£726

Flights are sorted by cheapest return flights first.

Deals found on 3/7

Showing 1-10 of 15 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 and Qatar Airways 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

1,363 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

1,363 reviews

KLM

7.8

Good

1,363 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.

Qatar Airways

7.4

Good

3,588 reviews

KLM

7.8

Good

1,363 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

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£363	Average£542	FlexibilityNo cancel fee	On-time69%	Search China Southern flights
Shenzhen Airlines	Cheapest£413	Average£592	FlexibilityNo cancel fee	On-time63%	Search Shenzhen Airlines flights
Finnair	Cheapest£437	Average£917	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
Air France	Cheapest£515	Average£781	FlexibilityNo cancel fee	On-time77%	Search Air France flights
Asiana Airlines	Cheapest£539	Average£846	FlexibilityNo cancel fee	On-time76%	Search Asiana Airlines flights
Scandinavian Airlines	Cheapest£563	Average£930	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights
KLM	Cheapest£586	Average£945	FlexibilityNo cancel fee	On-time75%	Search KLM flights
Air India	Cheapest£604	Average£646	FlexibilityNo cancel fee	On-timeN/A	Search Air India flights
LOT	Cheapest£643	Average£869	FlexibilityNo cancel fee	On-time81%	Search LOT flights
Etihad Airways	Cheapest£660	Average£783	FlexibilityNo cancel fee	On-time75%	Search Etihad Airways 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 £726

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 15/9. 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 4 7월 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 4 7월 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 4 7월 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 4 7월 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 4 7월 2025.

Check out reviews from past customers who have flown with KLM and Qatar Airways 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.

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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Book with Flexibility

Travel Smart

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 4 7월 2025.