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Cheap flights from Portsmouth to Osaka from £1,304

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — OSA
25 Mar — 1 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Portsmouth to Osaka

Enter your travel dates to find the best prices.

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 23 February 2026.

Thu 9/406:50
SOU
-
KIX
2 stops21h 55m
Multiple Airlines
Thu 16/409:30
KIX
-
SOU
3 stops31h 15m
Multiple Airlines
Deal found 23/2£1,304
Sun 6/909:10
SOU
-
KIX
2 stops24h 15m
Qatar Airways
Tue 22/918:55
KIX
-
SOU
2 stops32h 35m
Qatar Airways
Deal found 22/2£1,356
Sun 6/909:10
SOU
-
KIX
2 stops24h 15m
Qatar Airways
Mon 28/918:55
KIX
-
SOU
2 stops56h 35m
Qatar Airways
Deal found 22/2£1,367
Sun 6/909:10
SOU
-
KIX
2 stops24h 15m
Qatar Airways
Fri 25/918:55
KIX
-
SOU
2 stops32h 35m
Qatar Airways
Deal found 22/2£1,382
Tue 8/920:00
SOU
-
KIX
2 stops37h 25m
Qatar Airways
Tue 22/918:55
KIX
-
SOU
2 stops32h 35m
Qatar Airways
Deal found 22/2£1,387
Tue 8/920:00
SOU
-
KIX
2 stops37h 25m
Qatar Airways
Mon 28/918:55
KIX
-
SOU
2 stops56h 35m
Qatar Airways
Deal found 22/2£1,398
Sun 7/609:10
SOU
-
KIX
2 stops24h 15m
Multiple Airlines
Sun 5/718:55
KIX
-
SOU
2 stops27h 50m
Multiple Airlines
Deal found 22/2£1,409
Tue 8/920:00
SOU
-
KIX
2 stops37h 25m
Qatar Airways
Fri 25/918:55
KIX
-
SOU
2 stops32h 35m
Qatar Airways
Deal found 22/2£1,413
Sat 5/910:15
SOU
-
KIX
2 stops23h 10m
Multiple Airlines
Fri 25/918:55
KIX
-
SOU
2 stops32h 35m
Multiple Airlines
Deal found 22/2£1,414
Mon 9/309:30
SOU
-
KIX
2 stops21h 55m
Qatar Airways
Thu 12/317:55
KIX
-
SOU
2 stops30h 40m
Qatar Airways
Deal found 19/2£1,417
Wed 2/909:10
SOU
-
KIX
2 stops24h 15m
Qatar Airways
Thu 24/918:55
KIX
-
SOU
2 stops32h 35m
Qatar Airways
Deal found 22/2£1,477

Find flight deals from Portsmouth to Osaka

Keep the following information in mind while searching for Portsmouth to Osaka flight deals. Data was last updated 23 February 2026.

Round-trip from

£1,304

Popular in

July

Cheapest in

January

Average price

£579
9/4-16/4
  • 9/4-16/4
  • 5 total stops
  • 53h 10m total
  • Portsmouth to Osaka
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (£102 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£21 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Portsmouth to Osaka 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 23 February 2026.
Use the filters below to find and compare flights from Portsmouth to Osaka that are best for you.

Fly from

Portsmouth

Fly to

Osaka

Route

Depart

Return

Price

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Thu 9/4

06:50-12:45

2 stops21h 55m

Osaka Kansai Intl

Thu 16/4

09:30-08:45

3 stops31h 15m

£1,304

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Sun 7/6

09:10-17:25

2 stops24h 15m

Osaka Kansai Intl

Sun 5/7

18:55-14:45

2 stops27h 50m

£1,409

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Thu 9/4

17:20-10:15

1 stop32h 55m

Osaka Kansai Intl

Thu 16/4

11:55-08:35

1 stop28h 40m

£1,545

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Mon 9/3

09:30-16:25

2 stops21h 55m

Osaka Kansai Intl

Thu 12/3

17:55-15:35

2 stops30h 40m

£1,609

SouthamptonOsaka

SOU - KIX

SOUKIX

Southampton Eastleigh

Thu 26/3

09:30-16:25

2 stops21h 55m

Osaka Kansai Intl

Fri 10/4

18:55-16:50

2 stops29h 55m

£2,844

Flights are sorted by cheapest return flights first.

Deals found on 23/2

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.
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

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

Currently, March is the cheapest month in which you can book a flight from Portsmouth to Osaka (average of £306). Flying from Portsmouth to Osaka in July is currently the most expensive (average of £707). 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 OSA?

Find hourly flight availability from Portsmouth to Osaka. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 23 February 2026.

A simple way to save on the total cost of your ticket is to fly from Portsmouth to Osaka in the evening. If you’re flexible enough to do this you can expect to save up to 21% on your trip compared to booking a flight in the morning.

Reviews of airlines servicing Osaka

Get insights into the airlines that provide service to Osaka. 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 Osaka. Reviews last updated 23 February 2026.
Check out reviews from past customers who have flown with KLM from Portsmouth to Osaka 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
7.7
Good
1,458 reviews
Check prices

Boarding

7.8

Food

7.3

Entertainment

7.1

Overall

7.7

Comfort

7.6

Crew

8.4

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
7.7
Good
1,458 reviews
KLM
7.7
Good
1,458 reviews
Check prices

Boarding

7.8

Food

7.3

Entertainment

7.1

Overall

7.7

Comfort

7.6

Crew

8.4

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 Osaka. 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 Osaka?

    KLM and Qatar Airways can get you from Portsmouth to Osaka in just under 21h 55m. Your travel time can differ by up to 11h. Airlines will cover a distance of 5970 mi. This flight may include one or multiple stops.

  • 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.

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

    Currently, March is the cheapest month in which you can book a flight from Portsmouth to Osaka (average of £306). Flying from Portsmouth to Osaka in July is currently the most expensive (average of £707). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 10 airlines flying from Portsmouth to Osaka

Discover the top 10 airlines that operate flights from Portsmouth to Osaka. 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 23 February 2026.
AirlineCheapestAverageFlexibilityOn-time
China EasternCheapest£381Average£597FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
China SouthernCheapest£428Average£545FlexibilityNo cancel feeOn-time69%
Search China Southern flights
Air ChinaCheapest£472Average£659FlexibilityNo cancel feeOn-time67%
Search Air China flights
Cathay PacificCheapest£683Average£859FlexibilityNo cancel feeOn-time72%
Search Cathay Pacific flights
Asiana AirlinesCheapest£751Average£1,043FlexibilityNo cancel feeOn-time76%
Search Asiana Airlines flights
KLMCheapest£781Average£1,148FlexibilityNo cancel feeOn-time75%
Search KLM flights
Japan AirlinesCheapest£825Average£1,232FlexibilityNo cancel feeOn-time79%
Search Japan Airlines flights
Etihad AirwaysCheapest£870Average£1,170FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
EmiratesCheapest£878Average£1,189FlexibilityNo cancel feeOn-time75%
Search Emirates flights
Thai AirwaysCheapest£996Average£1,131FlexibilityNo cancel feeOn-time77%
Search Thai Airways 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 Osaka?

Cheapflights helps you search for flights from Portsmouth to Osaka via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Portsmouth to Osaka for you. Better yet — we are completely free to use.

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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