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Cheap flights from Portsmouth to Osaka

LHR — OSA
29 Oct — 5 Nov1
1 adult
1 adult, Economy, 0 bags

Find flight deals from Portsmouth to Osaka

Popular in

July

Cheapest in

January

Average price

£635
Highest demand for flights based on searches. 19% potential increase in price (£126 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£21 potential savings vs. average return price).
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Average for round-trip flights in September 2026
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Related info for your journey

  • 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.

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Top 8 airlines flying from Portsmouth to Osaka

AirlineCheapestAverageFlexibilityOn-time
China EasternCheapest£369Average£621FlexibilityNo cancel feeOn-time62%
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China SouthernCheapest£436Average£452FlexibilityNo cancel feeOn-time69%
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Air ChinaCheapest£460Average£736FlexibilityNo cancel feeOn-time67%
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KLMCheapest£566Average£683FlexibilityNo cancel feeOn-time75%
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Etihad AirwaysCheapest£642Average£1,171FlexibilityNo cancel feeOn-time75%
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Cathay PacificCheapest£747Average£913FlexibilityNo cancel feeOn-time72%
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Asiana AirlinesCheapest£754Average£908FlexibilityNo cancel feeOn-time76%
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EmiratesCheapest£998Average£1,088FlexibilityNo cancel feeOn-time75%
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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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