How long is the flight from London Heathrow Airport to Tonga?

Airlines like Singapore Airlines fly from London Heathrow Airport to Tonga in about 37h 20m. The time it takes to get you to your destination can typically vary by up to . The distance from London Heathrow Airport to Tonga is about 10321 mi.

In terms of precipitation, rainfall in Tonga ranges from 95.0 - 210.0 inches per month. February is typically the wettest month, when rainfall can reach 210.0 mm. June is typically the driest time to visit Tonga when rainfall is around 95.0 mm.

If weather is an important factor for your trip to Tonga, use this chart to help with planning. For those seeking warmer temperatures, February is the ideal time of year to visit, when temperatures reach an average of 27.0 C. Travellers hoping to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 22.0 C).

What is the cheapest time of day to fly from LHR to TO?

When flying from London Heathrow Airport to Tonga, 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 Heathrow to Tonga that include hotel bookings?

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

How can I find direct flights from Heathrow to Tonga?

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

Can I find deals for business class flights from Heathrow to Tonga?

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

£2,218+ Flights from London Heathrow Airport to Tonga

Cheap flight deals from Heathrow to Tonga

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Tonga
Explore the most affordable flight options available from Heathrow to Tonga. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 January 2026.

Sat 9/509:25

LHR

TBU

2 stops37h 20m

Singapore Airlines

Wed 13/516:25

TBU

LHR

2 stops49h 30m

Singapore Airlines

Deal found 19/1£2,218

Find flight deals from Heathrow to Tonga

Round-trip from	£2,218

Singapore Airlines
9/5-13/5
4 total stops
86h 50m total
London to Tonga

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from London Heathrow Airport to Tonga that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonNuku‘alofa

LHR - TBU

LHRTBU

London Heathrow

Sat 9/5

09:25-10:45

2 stops37h 20m

Nuku‘alofa Fua'Amotu Intl

Wed 13/5

16:25-05:55

2 stops49h 30m

£2,218

Flights are sorted by cheapest return flights first.

Deals found on 19/1

Best time to book a flight from Heathrow to Tonga

Have a flexible travel schedule? Discover the best time to fly to Tonga from Heathrow 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 London Heathrow Airport to Tonga

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

Reviews of airlines servicing Tonga

Read reviews from past customers who have flown with Air New Zealand from London Heathrow Airport to Tonga. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Air New Zealand

8.0

Very Good

573 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

David,Jan 2026

AKL - IAH

Couple of spare seats on this flight so people could spread a little. Much better than a full plane

Air New Zealand

8.0

Very Good

573 reviews

Air New Zealand

8.0

Very Good

573 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

David,Jan 2026

AKL - IAH

Couple of spare seats on this flight so people could spread a little. Much better than a full plane

Related info for your journey

How long is the flight from London Heathrow Airport to Tonga?
Airlines like Singapore Airlines fly from London Heathrow Airport to Tonga in about 37h 20m. The time it takes to get you to your destination can typically vary by up to . The distance from London Heathrow Airport to Tonga is about 10321 mi.
Can I find deals for flights from Heathrow to Tonga that include hotel bookings?
Yes. In addition to deals on Heathrow to Tonga flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Heathrow to Tonga?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Tonga.
Can I find deals for business class flights from Heathrow to Tonga?
Yes. Cheapflights offers flight deals from Heathrow to Tonga by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Heathrow to Tonga

Heathrow to Sydney flights

Heathrow to Melbourne flights

Heathrow to Perth flights

Gatwick to Sydney flights

Stansted to Sydney flights

Gatwick to Melbourne flights

Stansted to Melbourne flights

London City to Sydney flights

London City to Melbourne flights

Heathrow to Auckland flights

Heathrow to Avalon flights

Gatwick to Perth flights

Heathrow to Brisbane flights

Stansted to Perth flights

London City to Perth flights

Gatwick to Auckland flights

Stansted to Auckland flights

Gatwick to Brisbane flights

London City to Auckland flights

Stansted to Brisbane flights

London City to Brisbane flights

Luton to Sydney flights

Heathrow to Christchurch flights

Luton to Auckland flights

Luton to Perth flights

Heathrow to Adelaide flights

Heathrow to Nadi flights

Gatwick to Christchurch flights

Stansted to Christchurch flights

Gatwick to Adelaide flights

Heathrow to Wellington flights

Stansted to Adelaide flights

Luton to Brisbane flights

London City to Adelaide flights

Gatwick to Wellington flights

Stansted to Wellington flights

Gatwick to Nadi flights

Gatwick to Avalon flights

Heathrow to Cairns flights

London City to Christchurch flights

Gatwick to Cairns flights

Stansted to Nadi flights

Heathrow to Papeete flights

Stansted to Cairns flights

Heathrow to Queenstown flights

Heathrow to Canberra flights

Gatwick to Queenstown flights

Southend to Sydney flights

Heathrow to Coolangatta flights

Stansted to Queenstown flights

Top airline flying from Heathrow to Tonga

Airline	Cheapest	Average	Flexibility	On-time
Air New Zealand	Cheapest£1,228	Average£1,477	FlexibilityNo cancel fee	On-time78%	Search Air New Zealand flights

Fly with Cheapflights

How does Cheapflights help users find flights from Heathrow to Tonga?

When you search for this flight from Heathrow to Tonga, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Tonga?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Heathrow to Tonga.

Can Cheapflights find flights from Heathrow to Tonga with no change fees?

Need flexible booking options for your flight to Tonga from Heathrow? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Heathrow to Tonga become cheaper?

Of course! You can now track prices for flights from Heathrow to Tonga and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from London Heathrow Airport to Tonga from £2,218

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/5. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Heathrow to Tonga

Cheapest flights from Heathrow to TongaExplore the most affordable flight options available from Heathrow to Tonga. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 January 2026.

Explore the most affordable flight options available from Heathrow to Tonga. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 January 2026.

Find flight deals from Heathrow to Tonga

Keep the following information in mind while searching for Heathrow to Tonga flight deals. Data was last updated 22 January 2026.

Round-trip from

Cheapflights Fare Finder

Use the filters below to find and compare flights from London Heathrow Airport to Tonga that are best for you.

Best time to book a flight from Heathrow to Tonga

Have a flexible travel schedule? Discover the best time to fly to Tonga from Heathrow with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Tonga

Reviews of airlines servicing Tonga

Get insights into the airlines that provide service to Tonga. 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 Tonga. Reviews last updated 22 January 2026.

Read reviews from past customers who have flown with Air New Zealand from London Heathrow Airport to Tonga. Users can see the overall rating for each airline as well as how each is rated 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 Heathrow to Tonga. 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 London Heathrow Airport to Tonga?

Can I find deals for flights from Heathrow to Tonga that include hotel bookings?

How can I find direct flights from Heathrow to Tonga?

Can I find deals for business class flights from Heathrow to Tonga?

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 Heathrow to Tonga

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

Top airline flying from Heathrow to Tonga

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 Heathrow to Tonga?

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Tonga?

Can Cheapflights find flights from Heathrow to Tonga with no change fees?

Can Cheapflights notify me if prices for flights from Heathrow to Tonga become cheaper?

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Heathrow to Tonga
Explore the most affordable flight options available from Heathrow to Tonga. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 January 2026.