In terms of precipitation, rainfall in South Island ranges from 40.0 - 60.0 inches per month. May is typically the wettest month, when rainfall can reach 60.0 mm. February is typically the driest time to visit South Island when rainfall is around 40.0 mm.

If weather is an important factor for your trip to South Island, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of June, when temperatures are typically at their lowest (around 6.0 C).

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

When flying from Portsmouth to South Island, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

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

How can I find direct flights from Portsmouth to South Island?

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

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

Yes. Cheapflights offers flight deals from Portsmouth to South Island by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£1,419+ Cheap Flights from Portsmouth to South Island

Cheap flight deals from Portsmouth to South Island

Enter your travel dates to find the best prices.

Cheapest

Best

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Cheapest flights from Portsmouth to South Island
Explore the most affordable flight options available from Portsmouth to South Island. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 8 September 2026.

Mon 19/1017:20 -

3 stops32h 35m

Mon 26/1018:20 -

3 stops51h 30m

Deal found 4/9£1,632

Fri 23/1020:00 -

3 stops54h 00m

Fri 30/1018:20 -

3 stops51h 25m

Deal found 8/9£1,762

Wed 4/1117:35 -

2 stops32h 50m

Sun 22/1117:05 -

2 stops37h 00m

Deal found 6/9£7,341

Find flight deals from Portsmouth to South Island

Round-trip from	£1,419
Popular in	August
Cheapest in	May
Average price	£1,301

22/2-28/2
6 total stops
91h 10m total
Portsmouth to South Island

Search Deals

Highest demand for flights based on searches. 10% potential increase in price (£113 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease (£18 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Portsmouth to South Island that are best for you.

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Route

Depart

Return

Price

Cheapest return flight

SouthamptonChristchurch

SOU Southampton Eastleigh - CHC Christchurch

SOUCHC

Southampton Eastleigh

Mon 22/2

15:15-14:00

3 stops33h 45m

Christchurch

Sun 28/2

18:20-14:45

3 stops57h 25m

£1,419

SouthamptonChristchurch

SOU Southampton Eastleigh - CHC Christchurch

SOUCHC

Southampton Eastleigh

Mon 19/10

17:20-13:55

3 stops32h 35m

Christchurch

Mon 26/10

18:20-08:50

3 stops51h 30m

£1,632

SouthamptonChristchurch

SOU Southampton Eastleigh - CHC Christchurch

SOUCHC

Southampton Eastleigh

Fri 23/10

17:20-13:55

2 stops32h 35m

Christchurch

Fri 30/10

09:15-11:55

3 stops39h 40m

£2,300

SouthamptonChristchurch

SOU Southampton Eastleigh - CHC Christchurch

SOUCHC

Southampton Eastleigh

Sat 6/2

17:30-23:50

2 stops41h 20m

Christchurch

Sat 20/2

12:00-08:10

2 stops57h 10m

£2,338

Fastest return journey

SouthamptonChristchurch

SOU Southampton Eastleigh - CHC Christchurch

SOUCHC

Southampton Eastleigh

Wed 4/11

17:35-15:25

2 stops32h 50m

Christchurch

Sun 22/11

17:05-17:05

2 stops37h 00m

£7,373

Flights are sorted by cheapest return flights first.

Deals found on 5/9

Sorted by cheapest first

Best time to book a flight from Portsmouth to South Island

Have a flexible travel schedule? Discover the best time to fly to South Island from Portsmouth with our price prediction graph.

SOU-CHC

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 South Island

P0R-zzEDG

SOU-CHC

No data available for this route at this time. Please check back soon.

Related info for your journey

Can I find deals for flights from Portsmouth to South Island that include hotel bookings?
Yes. In addition to deals on Portsmouth to South Island flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Portsmouth to South Island?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portsmouth to South Island.
Can I find deals for business class flights from Portsmouth to South Island?
Yes. Cheapflights offers flight deals from Portsmouth to South Island by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Portsmouth to South Island

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Top 10 airlines flying from Portsmouth to South Island

Airline	Cheapest	Average	Flexibility	On-time
Lufthansa	Cheapest£431	Average£1,216	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
China Southern	Cheapest£762	Average£1,093	FlexibilityNo cancel fee	On-time69%	Search China Southern flights
Etihad Airways	Cheapest£956	Average£1,106	FlexibilityNo cancel fee	On-time75%	Search Etihad Airways flights
Emirates	Cheapest£1,069	Average£1,357	FlexibilityNo cancel fee	On-time75%	Search Emirates flights
United Airlines	Cheapest£1,087	Average£1,282	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Air New Zealand	Cheapest£1,113	Average£1,534	FlexibilityNo cancel fee	On-time78%	Search Air New Zealand flights
Qantas Airways	Cheapest£1,133	Average£1,450	FlexibilityNo cancel fee	On-time74%	Search Qantas Airways flights
Cathay Pacific	Cheapest£1,149	Average£1,719	FlexibilityNo cancel fee	On-time72%	Search Cathay Pacific flights
Qatar Airways	Cheapest£1,172	Average£1,395	FlexibilityNo cancel fee	On-time68%	Search Qatar Airways flights
Singapore Airlines	Cheapest£1,182	Average£1,703	FlexibilityNo cancel fee	On-time81%	Search Singapore Airlines flights

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

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Cheap flights from Portsmouth to South Island from £1,419

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 22/2. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Portsmouth to South Island

Cheapest flights from Portsmouth to South IslandExplore the most affordable flight options available from Portsmouth to South Island. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 8 September 2026.

Explore the most affordable flight options available from Portsmouth to South Island. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 8 September 2026.

Best flights from Portsmouth to South IslandDiscover carefully curated flight deals from Portsmouth to South Island that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 8 September 2026.

Discover carefully curated flight deals from Portsmouth to South Island that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 8 September 2026.

Last-minute flights from Portsmouth to South IslandDiscover last-minute flight deals from Portsmouth to South Island. Data last updated 8 September 2026 and is based on user searches.

Discover last-minute flight deals from Portsmouth to South Island. Data last updated 8 September 2026 and is based on user searches.

Find flight deals from Portsmouth to South Island

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Use the filters below to find and compare flights from Portsmouth to South Island that are best for you.

Best time to book a flight from Portsmouth to South Island

Have a flexible travel schedule? Discover the best time to fly to South Island from Portsmouth with our price prediction graph.

Cheapflights Insights

Related info for your journey

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

How can I find direct flights from Portsmouth to South Island?

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

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 South Island

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to South Island by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to

Book a non-stop flight to one of these other cities located in .

Search flights from Portsmouth to South Island by cabin class

Find flights from Portsmouth to South Island, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Portsmouth and South Island flights

Browse other Portsmouth and South Island flight options. Last updated on 8 September 2026.

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How does Cheapflights help users find flights from Portsmouth to South Island?

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

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Cheapest flights from Portsmouth to South Island
Explore the most affordable flight options available from Portsmouth to South Island. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 8 September 2026.

Best flights from Portsmouth to South Island
Discover carefully curated flight deals from Portsmouth to South Island that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 8 September 2026.

Last-minute flights from Portsmouth to South Island
Discover last-minute flight deals from Portsmouth to South Island. Data last updated 8 September 2026 and is based on user searches.