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Cheap flights from Portsmouth to Japan from £603

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 30/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — FUK
16 Apr — 23 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Portsmouth to Japan

Enter your travel dates to find the best prices.

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 17 March 2026.

Thu 30/409:20
SOU
-
NRT
2 stops43h 15m
Multiple Airlines
Thu 7/518:15
NRT
-
SOU
2 stops57h 15m
Multiple Airlines
Deal found 16/3£802
Mon 18/518:20
SOU
-
KIX
2 stops34h 25m
Multiple Airlines
Mon 25/514:20
KIX
-
SOU
2 stops38h 25m
Multiple Airlines
Deal found 15/3£804
Wed 29/406:50
SOU
-
KIX
2 stops45h 00m
Multiple Airlines
Wed 6/518:40
KIX
-
SOU
2 stops34h 05m
Multiple Airlines
Deal found 15/3£806
Thu 30/406:50
SOU
-
KIX
2 stops21h 00m
Multiple Airlines
Thu 7/514:00
KIX
-
SOU
3 stops27h 25m
Multiple Airlines
Deal found 16/3£1,022
Thu 21/509:20
SOU
-
NRT
2 stops26h 10m
Multiple Airlines
Sun 31/515:25
NRT
-
SOU
2 stops36h 05m
Multiple Airlines
Deal found 17/3£1,038
Sun 26/409:20
SOU
-
KIX
2 stops24h 05m
Multiple Airlines
Sun 3/518:55
KIX
-
SOU
2 stops29h 55m
Multiple Airlines
Deal found 12/3£1,040
Thu 7/520:00
SOU
-
NRT
2 stops39h 30m
Multiple Airlines
Thu 21/522:25
NRT
-
SOU
2 stops29h 05m
Multiple Airlines
Deal found 16/3£1,054
Thu 7/520:00
SOU
-
HND
2 stops43h 55m
Multiple Airlines
Thu 21/522:50
HND
-
SOU
2 stops28h 40m
Multiple Airlines
Deal found 16/3£1,055
Thu 7/520:00
SOU
-
NRT
2 stops33h 20m
Qatar Airways
Thu 21/522:25
NRT
-
SOU
2 stops53h 05m
Qatar Airways
Deal found 16/3£1,063
Wed 6/520:00
SOU
-
NRT
2 stops57h 20m
Qatar Airways
Thu 21/522:25
NRT
-
SOU
2 stops53h 05m
Qatar Airways
Deal found 16/3£1,075
Mon 11/520:00
SOU
-
NRT
2 stops39h 30m
Multiple Airlines
Fri 22/522:25
NRT
-
SOU
2 stops29h 05m
Multiple Airlines
Deal found 16/3£1,081
Mon 11/520:00
SOU
-
HND
2 stops43h 55m
Multiple Airlines
Fri 22/522:50
HND
-
SOU
2 stops28h 40m
Multiple Airlines
Deal found 16/3£1,082

Find flight deals from Portsmouth to Japan

Keep the following information in mind while searching for Portsmouth to Japan flight deals. Data was last updated 17 March 2026.

Round-trip from

£802

One-way from

£603

Popular in

August

Cheapest in

November

Average price

£900
30/4-7/5
  • 30/4-7/5
  • 4 total stops
  • 100h 30m total
  • Portsmouth to Japan
Search Deals
30/4
  • 30/4
  • 3 total stops
  • 39h 25m total
  • Portsmouth to Japan
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£106 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 March 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Portsmouth to Japan 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 17 March 2026.
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

Cheapest return flight

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Wed 29/4

06:50-11:50

2 stops45h 00m

Osaka Kansai Intl

Wed 6/5

18:40-20:45

2 stops34h 05m

£806

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Sun 26/4

17:20-12:10

3 stops34h 50m

Osaka Kansai Intl

Sun 3/5

14:20-20:45

2 stops38h 25m

£1,058

SouthamptonTokyo

SOU - NRT

SOUNRT

Southampton Eastleigh

Thu 14/5

09:10-19:30

2 stops26h 20m

Tokyo Narita

Fri 22/5

22:25-19:30

2 stops29h 05m

£1,087

SouthamptonTokyo

SOU - NRT

SOUNRT

Southampton Eastleigh

Tue 12/5

20:00-13:20

2 stops33h 20m

Tokyo Narita

Fri 22/5

15:25-19:30

2 stops36h 05m

£1,131

SouthamptonTokyo

SOU - NRT

SOUNRT

Southampton Eastleigh

Thu 28/5

20:00-13:20

2 stops33h 20m

Tokyo Narita

Tue 9/6

15:25-19:30

2 stops36h 05m

£1,178

SouthamptonTokyo

SOU - NRT

SOUNRT

Southampton Eastleigh

Thu 28/5

20:00-13:20

2 stops33h 20m

Tokyo Narita

Mon 8/6

15:25-19:30

2 stops36h 05m

£1,178

SouthamptonTokyo

SOU - HND

SOUHND

Southampton Eastleigh

Tue 12/5

09:20-23:55

2 stops30h 35m

Tokyo Haneda

Tue 26/5

22:50-19:30

2 stops28h 40m

£1,192

SouthamptonTokyo

SOU - HND

SOUHND

Southampton Eastleigh

Mon 11/5

20:00-23:55

2 stops43h 55m

Tokyo Haneda

Tue 26/5

22:50-19:30

2 stops28h 40m

£1,201

SouthamptonSapporo

SOU - CTS

SOUCTS

Southampton Eastleigh

Thu 30/4

06:50-20:05

3 stops29h 15m

Sapporo Chitose

Thu 7/5

09:35-09:25

3 stops31h 50m

£1,201

SouthamptonTokyo

SOU - HND

SOUHND

Southampton Eastleigh

Mon 25/5

20:00-23:55

2 stops43h 55m

Tokyo Haneda

Mon 8/6

22:50-19:30

2 stops28h 40m

£1,208

Flights are sorted by cheapest return flights first.

Deals found on 16/3

Showing 1-10 of 52 resultsSorted by cheapest first
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6

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, March is the cheapest month in which you can book a flight from Portsmouth to Japan (average of £346). Flying from Portsmouth to Japan in July is currently the most expensive (average of £675). 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?

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 17 March 2026.

It’s optimal to fly from Portsmouth to Japan in the afternoon. By choosing this option you can save up to 30% on the cost of your flight, compared to a flight at midday.

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

Use this chart to determine the cheapest time to fly return from Portsmouth to Japan. Price data was last updated on 30 March 2025.

Travellers seeking maximum savings on their Portsmouth to Japan flight should consider departing on Monday afternoons when fares are most often at their lowest. Saturday at midday flights should be avoided if possible as fares are typically the most expensive at this time.

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 17 March 2026.
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
1,472 reviews
Check prices

Food

7.3

Overall

7.8

Crew

8.4

Boarding

7.8

Comfort

7.6

Entertainment

7.1

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
1,472 reviews
KLM
7.8
Good
1,472 reviews
Check prices

Food

7.3

Overall

7.8

Crew

8.4

Boarding

7.8

Comfort

7.6

Entertainment

7.1

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 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?

    Qatar Airways can get you from Portsmouth to Japan in just under 26h 20m. 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, March is the cheapest month in which you can book a flight from Portsmouth to Japan (average of £346). Flying from Portsmouth to Japan in July is currently the most expensive (average of £675). 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

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Alternative routes for Portsmouth to Japan

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Portsmouth to Japan

Discover the top 10 airlines that operate flights from Portsmouth to Japan. 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 17 March 2026.
AirlineCheapestAverageFlexibilityOn-time
FinnairCheapest£335Average£1,099FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Shenzhen AirlinesCheapest£338Average£676FlexibilityNo cancel feeOn-time63%
Search Shenzhen Airlines flights
China SouthernCheapest£389Average£567FlexibilityNo cancel feeOn-time69%
Search China Southern flights
Air IndiaCheapest£599Average£673FlexibilityNo cancel feeOn-timeN/A
Search Air India flights
Etihad AirwaysCheapest£659Average£1,004FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
SWISSCheapest£685Average£983FlexibilityNo cancel feeOn-time79%
Search SWISS flights
KLMCheapest£693Average£1,109FlexibilityNo cancel feeOn-time75%
Search KLM flights
ANACheapest£698Average£1,163FlexibilityNo cancel feeOn-time80%
Search ANA flights
Scandinavian AirlinesCheapest£728Average£1,020FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
LufthansaCheapest£729Average£1,163FlexibilityNo cancel feeOn-time76%
Search Lufthansa 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 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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