Question 1

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

Accepted Answer

Currently, November is the cheapest month in which you can book a flight from Portsmouth to Osaka (average of £660). Flying from Portsmouth to Osaka in July is currently the most expensive (average of £1,386). 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.

Question 2

E

Accepted Answer

In terms of precipitation, rainfall in Osaka ranges from 40.0 - 200.0 inches per month. June is typically the wettest month, when rainfall can reach 200.0 mm. January is typically the driest time to visit Osaka when rainfall is around 40.0 mm.

Question 3

E

Accepted Answer

If weather is an important factor for your trip to Osaka, 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 29.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 6.0 C).

Question 4

What are the most popular airlines that fly from Portsmouth to Osaka?

Accepted Answer

When booking a flight from Portsmouth to Osaka, you may want to consider flying on Finnair, Air China or Cathay Pacific as they are the most popular for this route.

Question 5

How far in advance should I book a flight from Portsmouth to Osaka?

Accepted Answer

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 18 days in advance, which can save you up to 35% on flights from Portsmouth to Osaka compared to booking the week you need them. Waiting 18 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at £478. For sooner than that we have options available in the next 3 days from £534.

Question 6

What is the cheapest month to fly from Portsmouth to Osaka?

Accepted Answer

The best pricing can be found in the month of November. Prices to Osaka from Portsmouth average £661. You can even find prices in November for less than £661, as users have found deals to Osaka from as low as £380. The month of July appears to be one of the more expensive times to travel to Osaka from Portsmouth. Flying in the targeted month can save you up to 45%.

Question 7

What is the cheapest time of day to fly from P0R to OSA?

Accepted Answer

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Portsmouth to Osaka as you normally would.

Question 8

Can I find deals for flights from Portsmouth to Osaka that include hotel bookings?

Accepted Answer

Yes. In addition to deals on Portsmouth to Osaka flights, Cheapflights offers holiday packages that include both flights and hotel.

Question 9

How can I find direct flights from Portsmouth to Osaka?

Accepted Answer

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portsmouth to Osaka.

Question 10

Can I find deals for business class flights from Portsmouth to Osaka?

Accepted Answer

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.

Question 11

How does Cheapflights help users find flights from Portsmouth to Osaka?

Accepted Answer

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.

Question 12

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

Accepted Answer

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.

Question 13

Can Cheapflights find flights from Portsmouth to Osaka with no change fees?

Accepted Answer

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.

Question 14

Can Cheapflights notify me if prices for flights from Portsmouth to Osaka become cheaper?

Accepted Answer

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.

Round-trip from	£1,114
One-way from	£764
Popular in	July
Cheapest in	November
Average price	£963

Airline	Cheapest	Average	Flexibility	On-time
China Eastern	Cheapest£320	Average£490	FlexibilityNo cancel fee	On-time62%	Search China Eastern flights
Air China	Cheapest£361	Average£531	FlexibilityNo cancel fee	On-time67%	Search Air China flights
China Southern	Cheapest£415	Average£619	FlexibilityNo cancel fee	On-time69%	Search China Southern flights
Shenzhen Airlines	Cheapest£429	Average£528	FlexibilityNo cancel fee	On-time63%	Search Shenzhen Airlines flights
Japan Airlines	Cheapest£637	Average£1,036	FlexibilityNo cancel fee	On-time79%	Search Japan Airlines flights
Cathay Pacific	Cheapest£663	Average£797	FlexibilityNo cancel fee	On-time72%	Search Cathay Pacific flights
Etihad Airways	Cheapest£683	Average£773	FlexibilityNo cancel fee	On-time75%	Search Etihad Airways flights
Finnair	Cheapest£711	Average£817	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
KLM	Cheapest£716	Average£935	FlexibilityNo cancel fee	On-time75%	Search KLM flights
Asiana Airlines	Cheapest£719	Average£845	FlexibilityNo cancel fee	On-time76%	Search Asiana Airlines flights

Cheap flights from Portsmouth to Osaka from £764

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 Osaka

Keep the following information in mind while searching for Portsmouth to Osaka flight deals. Data was last updated 11 July 2025.

Round-trip from

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Find flight deals from Portsmouth to Osaka

Cheapest flights from Portsmouth to OsakaExplore 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 11 July 2025.

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 11 July 2025.

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Best time to book a flight from Portsmouth to Osaka

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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?

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 11 July 2025.

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 11 July 2025.

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

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.

Can I find deals for flights from Portsmouth to Osaka that include hotel bookings?

How can I find direct flights from Portsmouth to Osaka?

Can I find deals for business class flights from Portsmouth to Osaka?

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

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Alternative routes for Portsmouth to Osaka

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Top 10 airlines flying from Portsmouth to Osaka

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How does Cheapflights help users find flights from Portsmouth to Osaka?

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

Can Cheapflights find flights from Portsmouth to Osaka with no change fees?

Can Cheapflights notify me if prices for flights from Portsmouth to Osaka become cheaper?

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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 11 July 2025.