Cheap flights from London Heathrow Airport to Tongatapu from £1,985
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 29/11. Fares are subject to change and may not be available on all flights or dates of travel.
Find flight deals from Heathrow to Tongatapu
Cheapest flights from Heathrow to TongatapuExplore the most affordable flight options available from Heathrow to Tongatapu. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 October 2025.
Explore the most affordable flight options available from Heathrow to Tongatapu. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 October 2025.
Cheapflights Fare Finder
Use the filters below to find and compare flights from London Heathrow Airport to Tongatapu that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
LondonNuku‘alofa
LHR - TBU
LHRTBU
London Heathrow
Sat 29/11
21:45-20:20
2 stops33h 35m
Nuku‘alofa Fua'Amotu Intl
Sat 6/12
14:50-10:55
2 stops33h 05m
Best time to book a flight from Heathrow to Tongatapu
Have a flexible travel schedule? Discover the best time to fly to Tongatapu from Heathrow with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from London Heathrow Airport to Tongatapu
What is the cheapest time of day to fly from LHR to TT?
Find hourly flight availability from Heathrow to Tongatapu. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 17 October 2025.
A simple way to save on the total cost of your ticket is to fly from London Heathrow Airport to Tongatapu in the afternoon. If you’re flexible enough to do this you can expect to save up to 41% on your trip compared to booking a flight in the morning.
Related info for your journey
Find useful and relevant information for your journey from Heathrow to Tongatapu. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Heathrow to Tongatapu
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How does Cheapflights help users find flights from Heathrow to Tongatapu?
When you search for this flight from Heathrow to Tongatapu, 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 Tongatapu?
Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Heathrow to Tongatapu for you. Better yet — we are completely free to use.
Can Cheapflights find flights from Heathrow to Tongatapu with no change fees?
Users can book flights with no change fees policies with our dedicated filters. Book flights from Heathrow to Tongatapu flexibly with Cheapflights today.
Can Cheapflights notify me if prices for flights from Heathrow to Tongatapu become cheaper?
Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Tongatapu from Heathrow today and book when prices fit your budget.