Cheap flights from London Heathrow Airport to South Island from £521
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to South Island departing on 6/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names, great deals
Big names, great deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customise your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from London Heathrow Airport to South Island
Cheap return flights
Cheap one-way flights
Cheap last-minute flights
Qantas Airways flights from London Heathrow Airport to South Island
Our best Qantas Airways deals on London Heathrow Airport to South Island flight tickets
British Airways flights from London Heathrow Airport to South Island
Our best British Airways deals on London Heathrow Airport to South Island flight tickets
See travel insights to South Island from
How to get the cheapest flight ticket from London Heathrow Airport to South Island
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to South Island?
In general, March is the cheapest month to fly from London Heathrow Airport to South Island. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £1,162. If you’re not able to fly to South Island in March, then February is your next best option. Flight prices from London Heathrow Airport to South Island during February average around £1,164.
What is the cheapest day to depart on your flight to South Island?
The cheapest day to depart on your flight to South Island is on a Monday when prices can be found for as low as £1,251. This is often the case because there is less demand to fly during this day of the week. Be sure to avoid booking your departure on a Wednesday as prices are generally higher than usual. According to our data, the average ticket price to South Island on Wednesday is £1,365.
What is the cheapest time of day to depart on your flight to South Island?
Flying to South Island from London Heathrow Airport in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as £1,251 when looking at flights departing in the afternoon. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are £1,468 on average. Flights to South Island from London Heathrow Airport in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.
How far in advance should I book a flight to South Island?
You are more likely to see cheaper flights to South Island from London Heathrow Airport when booking 18 weeks ahead of your departure date. In general, you can expect to find flights to South Island for around £1,307 when searching 18 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to South Island from London Heathrow Airport for as low as £1,109 on momondo.
What is the cheapest airline that flies from London Heathrow to South Island?
Etihad Airways, Singapore Airlines, and Emirates are the most popular carriers operating from London Heathrow to South Island
Which airlines fly to South Island?
Singapore Airlines, Emirates and Air New Zealand are the top three most popular airlines that fly to South Island from London Heathrow Airport according to our data. Singapore Airlines is the first choice among our users, with 33% of people opting to fly with this airline when travelling to South Island. Keep in mind that there are 9 different airlines that fly to South Island on a routine basis, so you have a few additional options to choose from.
Cheap London Heathrow Airport to South Island flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to South Island
When did momondo last update prices for flights from London Heathrow Airport to South Island?
Prices for flights from London Heathrow Airport to South Island refresh daily.
How many operators does momondo search for flights from London Heathrow Airport to South Island?
As of May 2025, there are 9 operators available to choose from for flights from London Heathrow Airport to South Island.
How old do you have to be to fly from London Heathrow Airport to South Island?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Heathrow Airport to South Island.
What documentation or ID do you need to fly to South Island?
The necessary travel and health documents for your South Island trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from London Heathrow Airport to South Island?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from London Heathrow Airport to South Island is Boeing 787-9 Dreamliner (17.76% of total bookings). The next most popular plane models are Airbus A350-1000 (16.33%), Boeing 777 (14.18%), and Boeing 787-8 Dreamliner (7.24%).
Best airlines flying from London Heathrow Airport to South Island
Compare and see reviews for airlines that fly from London Heathrow Airport to South Island with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom £743 | Free Cancellation | Rating 7.5 96 reviews | |||
| PriceFrom £922 | Free Cancellation | Rating 7.4 1,203 reviews | |||
| PriceFrom £938 | Free Cancellation | Rating 6.7 7,045 reviews | |||
| PriceFrom £964 | Free Cancellation | Rating 8.0 472 reviews | |||
| PriceFrom £1,027 | Free Cancellation | Rating 7.4 8,696 reviews | |||
| PriceFrom £1,058 | Free Cancellation | Rating 8.0 3,217 reviews | |||
| PriceFrom £1,066 | Free Cancellation | Rating 7.5 855 reviews | |||
| PriceFrom £1,109 | Free Cancellation | Rating 8.1 1,292 reviews | |||
| PriceFrom £1,112 | Free Cancellation | Rating 7.5 829 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from London to South Island?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to South Island from London.
Can I find flights from London to South Island with flexible booking policies on momondo?
All flight searches from London to South Island on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from London to South Island?
Once you have performed a search for London to South Island flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from London to South Island right now. Can momondo alert me if prices change?
Yes. momondo can track prices for London to South Island flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.