How long is the flight from Portsmouth to Japan?

Qatar Airways and KLM can get you from Portsmouth to Japan in just under 25h 25m. Your travel time can differ by up to 5h 05m. There are 6007 mi between Portsmouth and Japan. Both multi-stop and direct flights can be found to your destination and back.

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 39 days before your planned departure. Booking around this time can save you about 7% on the cost of this flight compared to booking a flight leaving this week. We have found prices from £567 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as £609.

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 £730. You can even find prices in November for less than £730, as users have found deals to Japan from as low as £378. 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 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.

£536+ Cheap Flights from Portsmouth to Japan

Cheap flight deals from Portsmouth to Japan

Round-trip from	£639
One-way from	£536
Popular in	August
Cheapest in	November
Average price	£737

29/10-5/11
4 total stops
69h 45m total
Portsmouth to Japan

Search Deals

Qatar Airways
8/1
2 total stops
36h 45m total
Portsmouth to Japan

Search Deals

Highest demand for flights based on searches. 19% potential increase in price (£127 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 September 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 15 September 2025.

Wed 29/1014:25SOU - KIX

2 stops37h 10mMultiple Airlines

Wed 5/1114:35KIX - SOU

2 stops32h 35mMultiple Airlines

Deal found 14/9£639

Thu 30/1018:05SOU - KIX

2 stops41h 55mMultiple Airlines

Thu 6/1109:20KIX - SOU

2 stops31h 45mMultiple Airlines

Deal found 15/9£689

Wed 29/1008:40SOU - HND

2 stops27h 10mMultiple Airlines

Wed 5/1117:10HND - SOU

2 stops47h 55mMultiple Airlines

Deal found 14/9£782

Wed 29/1008:40SOU - NRT

2 stops27h 15mMultiple Airlines

Wed 5/1118:00NRT - SOU

3 stops30h 35mMultiple Airlines

Deal found 14/9£859

Tue 25/1120:10SOU - NRT

2 stops30h 45mQatar Airways

Fri 5/1221:55NRT - SOU

2 stops50h 40mQatar Airways

Deal found 14/9£968

Sun 12/1020:00SOU - NRT

3 stops32h 00mMultiple Airlines

Sun 19/1014:35NRT - SOU

3 stops32h 00mMultiple Airlines

Deal found 14/9£1,080

Sun 12/1019:50SOU - HND

3 stops34h 30mMultiple Airlines

Sun 19/1010:45HND - SOU

3 stops35h 50mMultiple Airlines

Deal found 14/9£1,094

Thu 18/917:35SOU - HND

2 stops28h 20mKLM

Thu 25/908:50HND - SOU

2 stops31h 55mKLM

Deal found 13/9£1,113

Wed 29/1008:40SOU - NRT

1 stop18h 05mKLM

Wed 5/1113:35NRT - SOU

1 stop27h 45mKLM

Deal found 14/9£1,127

Fri 7/1108:40SOU - NRT

1 stop18h 05mKLM

Sun 16/1113:35NRT - SOU

1 stop27h 35mKLM

Deal found 14/9£1,295

Wed 29/1012:25SOU - HND

2 stops51h 35mMultiple Airlines

Mon 17/1123:30HND - SOU

2 stops25h 50mMultiple Airlines

Deal found 14/9£1,333

Thu 18/909:40SOU - HND

3 stops27h 55mMultiple Airlines

Thu 25/921:45HND - SOU

2 stops29h 50mMultiple Airlines

Deal found 13/9£1,343

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 15 September 2025.

Thu 30/1018:05SOU - KIX

2 stops41h 55mMultiple Airlines

Thu 6/1109:20KIX - SOU

2 stops31h 45mMultiple Airlines

Deal found 15/9£689

Fri 9/109:30SOU - HND

2 stops30h 30mQatar Airways

Sat 24/123:30HND - SOU

2 stops29h 10mQatar Airways

Deal found 14/9£926

Fri 6/209:00SOU - HND

2 stops25h 25mKLM

Tue 10/209:05HND - SOU

2 stops40h 55mKLM

Deal found 12/9£1,071

Wed 29/1008:40SOU - HND

2 stops27h 10mMultiple Airlines

Wed 5/1117:10HND - SOU

2 stops47h 55mMultiple Airlines

Deal found 14/9£782

Wed 29/1017:30SOU - KIX

3 stops33h 40mMultiple Airlines

Wed 5/1115:25KIX - SOU

3 stops37h 15mMultiple Airlines

Deal found 14/9£822

Fri 9/120:10SOU - NRT

2 stops36h 45mQatar Airways

Sat 24/121:55NRT - SOU

2 stops30h 45mQatar Airways

Deal found 14/9£926

Mon 26/120:10SOU - NRT

2 stops30h 45mMultiple Airlines

Tue 10/216:55NRT - SOU

2 stops28h 00mMultiple Airlines

Deal found 14/9£865

Wed 29/1008:40SOU - NRT

1 stop18h 05mKLM

Wed 5/1113:35NRT - SOU

1 stop27h 45mKLM

Deal found 14/9£1,127

Fri 23/109:30SOU - NRT

2 stops23h 25mMultiple Airlines

Thu 29/116:55NRT - SOU

2 stops35h 45mMultiple Airlines

Deal found 15/9£955

Mon 9/320:10SOU - NRT

2 stops30h 45mQatar Airways

Wed 11/316:55NRT - SOU

2 stops35h 45mQatar Airways

Deal found 15/9£1,179

Mon 9/308:50SOU - KIX

1 stop17h 30mKLM

Wed 11/312:45KIX - SOU

2 stops37h 40mKLM

Deal found 13/9£1,257

Fri 7/1108:40SOU - NRT

1 stop18h 05mKLM

Sun 16/1113:35NRT - SOU

1 stop27h 35mKLM

Deal found 14/9£1,295

Last-minute flights from Portsmouth to Japan
Discover last-minute flight deals from Portsmouth to Japan. Data last updated 15 September 2025 and is based on user searches.

Sun 12/1020:00SOU - NRT

3 stops32h 00mMultiple Airlines

Sun 19/1014:35NRT - SOU

3 stops32h 00mMultiple Airlines

Deal found 14/9£1,080

Sun 12/1019:50SOU - HND

3 stops34h 30mMultiple Airlines

Sun 19/1010:45HND - SOU

3 stops35h 50mMultiple Airlines

Deal found 14/9£1,094

Sun 12/1018:25SOU - NRT

1 stop28h 45mKLM

Sun 19/1012:35NRT - SOU

1 stop28h 10mKLM

Deal found 14/9£1,407

Sun 12/1018:25SOU - HND

2 stops54h 30mKLM

Sun 19/1011:45HND - SOU

2 stops53h 00mKLM

Deal found 14/9£1,552

Wed 29/1014:25SOU - KIX

2 stops37h 10mMultiple Airlines

Wed 5/1114:35KIX - SOU

2 stops32h 35mMultiple Airlines

Deal found 14/9£639

Wed 29/1008:40SOU - HND

2 stops27h 10mMultiple Airlines

Wed 5/1117:10HND - SOU

2 stops47h 55mMultiple Airlines

Deal found 14/9£782

Wed 29/1008:40SOU - NRT

2 stops27h 15mMultiple Airlines

Wed 5/1118:00NRT - SOU

3 stops30h 35mMultiple Airlines

Deal found 14/9£859

Wed 29/1008:40SOU - NRT

1 stop18h 05mKLM

Wed 5/1113:35NRT - SOU

1 stop27h 45mKLM

Deal found 14/9£1,127

Wed 29/1012:25SOU - HND

2 stops51h 35mMultiple Airlines

Mon 17/1123:30HND - SOU

2 stops25h 50mMultiple Airlines

Deal found 14/9£1,333

Wed 29/1008:40SOU - HND

2 stops25h 45mKLM

Tue 4/1101:00HND - SOU

2 stops25h 00mKLM

Deal found 14/9£1,454

Wed 29/1008:30SOU - NRT

2 stops24h 25mMultiple Airlines

Mon 17/1121:55NRT - SOU

2 stops54h 45mMultiple Airlines

Deal found 14/9£1,629

Thu 30/1018:05SOU - KIX

2 stops41h 55mMultiple Airlines

Thu 6/1109:20KIX - SOU

2 stops31h 45mMultiple Airlines

Deal found 15/9£689

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 15 September 2025.

Tue 18/1120:10SOU - NRT

2 stops30h 45mQatar Airways

Deal found 14/9£536

Mon 17/1109:30SOU - HND

2 stops30h 30mQatar Airways

Deal found 14/9£536

Tue 18/1120:10SOU - HND

2 stops43h 50mQatar Airways

Deal found 14/9£537

Mon 5/120:10SOU - HND

2 stops43h 50mQatar Airways

Deal found 15/9£540

Mon 17/1120:10SOU - NRT

2 stops54h 45mQatar Airways

Deal found 14/9£543

Sun 16/1109:30SOU - NRT

2 stops23h 25mQatar Airways

Deal found 14/9£561

Sun 16/1109:30SOU - HND

2 stops30h 30mQatar Airways

Deal found 14/9£561

Sat 15/1109:30SOU - NRT

2 stops47h 25mQatar Airways

Deal found 14/9£656

Sat 15/1109:30SOU - HND

2 stops54h 30mQatar Airways

Deal found 14/9£659

Wed 5/1108:40SOU - NRT

1 stop18h 05mKLM

Deal found 14/9£750

Wed 5/1108:40SOU - NRT

2 stops24h 15mMultiple Airlines

Deal found 15/9£965

Tue 6/112:25SOU - NRT

2 stops44h 30mQatar Airways

Deal found 15/9£965

Fly from

Fly to

Route

Depart

Return

Price

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Thu 30/10

18:05-21:00

2 stops41h 55m

Osaka Kansai Intl

Thu 6/11

09:20-08:05

2 stops31h 45m

£689

SouthamptonTokyo

SOU - HND

SOUHND

Southampton Eastleigh

Wed 29/10

08:40-20:50

2 stops27h 10m

Tokyo Haneda

Wed 5/11

17:10-08:05

2 stops47h 55m

£782

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Wed 29/10

17:30-12:10

3 stops33h 40m

Osaka Kansai Intl

Wed 5/11

15:25-19:40

3 stops37h 15m

£822

SouthamptonTokyo

SOU - NRT

SOUNRT

Southampton Eastleigh

Mon 26/1

20:10-11:55

2 stops30h 45m

Tokyo Narita

Tue 10/2

16:55-11:55

2 stops28h 00m

£865

SouthamptonTokyo

SOU - HND

SOUHND

Southampton Eastleigh

Fri 9/1

09:30-01:00

2 stops30h 30m

Tokyo Haneda

Sat 24/1

23:30-19:40

2 stops29h 10m

£926

SouthamptonTokyo

SOU - NRT

SOUNRT

Southampton Eastleigh

Fri 9/1

20:10-17:55

2 stops36h 45m

Tokyo Narita

Sat 24/1

21:55-19:40

2 stops30h 45m

£926

SouthamptonTokyo

SOU - NRT

SOUNRT

Southampton Eastleigh

Fri 23/1

09:30-17:55

2 stops23h 25m

Tokyo Narita

Thu 29/1

16:55-19:40

2 stops35h 45m

£955

SouthamptonTokyo

SOU - HND

SOUHND

Southampton Eastleigh

Fri 6/2

09:00-19:25

2 stops25h 25m

Tokyo Haneda

Tue 10/2

09:05-17:00

2 stops40h 55m

£1,071

SouthamptonTokyo

SOU - HND

SOUHND

Southampton Eastleigh

Sun 12/10

19:50-14:20

3 stops34h 30m

Tokyo Haneda

Sun 19/10

10:45-14:35

3 stops35h 50m

£1,094

SouthamptonTokyo

SOU - NRT

SOUNRT

Southampton Eastleigh

Wed 29/10

08:40-11:45

1 stop18h 05m

Tokyo Narita

Wed 5/11

13:35-08:20

1 stop27h 45m

£1,127

Flights are sorted by cheapest return flights first.

Deals found on 14/9

Showing 1-10 of 45 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

1,385 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Mark,Sept 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.

KLM

7.8

Good

1,385 reviews

KLM

7.8

Good

1,385 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Mark,Sept 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.

Related info for your journey

How long is the flight from Portsmouth to Japan?
Qatar Airways and KLM can get you from Portsmouth to Japan in just under 25h 25m. Your travel time can differ by up to 5h 05m. There are 6007 mi between Portsmouth and Japan. Both multi-stop and direct flights can be found to your destination and back.
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£368	Average£546	FlexibilityNo cancel fee	On-time69%	Search China Southern flights
Shenzhen Airlines	Cheapest£415	Average£623	FlexibilityNo cancel fee	On-time63%	Search Shenzhen Airlines flights
Finnair	Cheapest£439	Average£1,000	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
Scandinavian Airlines	Cheapest£538	Average£950	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights
Air India	Cheapest£561	Average£644	FlexibilityNo cancel fee	On-timeN/A	Search Air India flights
Etihad Airways	Cheapest£644	Average£779	FlexibilityNo cancel fee	On-time75%	Search Etihad Airways flights
SWISS	Cheapest£672	Average£1,008	FlexibilityNo cancel fee	On-time79%	Search SWISS flights
Air France	Cheapest£691	Average£1,029	FlexibilityNo cancel fee	On-time77%	Search Air France flights
KLM	Cheapest£692	Average£970	FlexibilityNo cancel fee	On-time75%	Search KLM flights
Iberia	Cheapest£710	Average£896	FlexibilityNo cancel fee	On-time77%	Search Iberia 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?

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Cheap flights from Portsmouth to Japan from £536

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 18/11. 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 15 September 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 15 September 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 15 September 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 15 September 2025.

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.

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 15 September 2025.