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Cheap flights from London Heathrow Airport to Tonga from £702

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 Tonga departing on 12/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from London Heathrow Airport to Tonga

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
09:00 - 15:55
LHR
-
TBU
42h 55m
3 stops
Multiple Airlines Logo
11:20 - 13:15
TBU
-
LHR
61h 55m
3 stops
£1,553Multiple Airlines
Thu, 17 Sep - Wed, 7 Oct
Air New Zealand Logo
20:35 - 19:45
LHR
-
TBU
35h 10m
2 stops
Air New Zealand Logo
14:50 - 13:20
TBU
-
LHR
34h 30m
2 stops
£1,572Air New Zealand
Thu, 17 Sep - Wed, 7 Oct
Multiple Airlines Logo
22:15 - 19:45
LHR
-
TBU
33h 30m
2 stops
Multiple Airlines Logo
14:50 - 06:35
TBU
-
LHR
51h 45m
3 stops
£1,697Multiple Airlines
Thu, 17 Sep - Wed, 7 Oct

momondo Fare Finder

 
Customise your flight search to find flights from London Heathrow Airport to Tonga that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 31 March 2026.
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

Cheapest return flight

LondonNuku‘alofa

LHR - TBU

LHRTBU

London Heathrow

Thu 17/9

09:00-15:55

3 stops42h 55m

Nuku‘alofa Fua'Amotu Intl

Wed 7/10

11:20-13:15

3 stops61h 55m

£1,553
Fastest return journey

LondonNuku‘alofa

LHR - TBU

LHRTBU

London Heathrow

Thu 17/9

20:35-19:45

2 stops35h 10m

Nuku‘alofa Fua'Amotu Intl

Wed 7/10

14:50-13:20

2 stops34h 30m

£1,572

LondonNuku‘alofa

LHR - TBU

LHRTBU

London Heathrow

Thu 17/9

22:15-19:45

2 stops33h 30m

Nuku‘alofa Fua'Amotu Intl

Wed 7/10

14:50-06:35

3 stops51h 45m

£1,697
Cheapest one-way
Fastest single journey

LondonNuku‘alofa

LHR - TBU

LHRTBU

London Heathrow

Sat 12/9

22:05-16:30

3 stops54h 25m

£702

LondonNuku‘alofa

LHR - TBU

LHRTBU

London Heathrow

Sat 12/9

20:45-16:30

2 stops55h 45m

£832

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

Cheap London Heathrow Airport to Tonga flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Tonga

Fastest flight time

42h 55m

Direct flights

None
The fastest flight from London Heathrow Airport to Tonga takes 42h 55m
There are no direct flights from London Heathrow Airport to Tonga. There are no popular flight routes from London Heathrow Airport to Tonga.
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  • When did momondo last update prices for flights from London Heathrow Airport to Tonga?

    Prices for flights from London Heathrow Airport to Tonga are updated daily.

  • How many operators does momondo search for flights from London Heathrow Airport to Tonga?

  • How old do you have to be to fly from London Heathrow Airport to Tonga?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London Heathrow Airport to Tonga.

  • What documentation or ID do you need to fly to Tonga?

    The required travel and health documents for your Tonga trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Tonga. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from London Heathrow Airport to Tonga

Compare and see reviews for airlines that fly from London Heathrow Airport to Tonga with momondo
Airline
Rating
Free Cancellation
Price
Air New ZealandPriceFrom £1,283Free CancellationRating
8.0
623 reviews
Search Air New Zealand flights

  • How do I get Price Alerts for flights from London Heathrow Airport to Tonga?

    You can take advantage of momondo’s Price Alerts by first searching for your flights to London Heathrow Airport from Tonga. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

  • How can I save money on flights from London Heathrow Airport to Tonga with momondo?

    Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.

  • How does momondo find its flight prices?

    We compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

Why use momondo?

Why should I use momondo to find a flight deal from London to Tonga?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Tonga for you.

Can I find flights from London to Tonga with flexible booking policies on momondo?

momondo does allow users to show only those flights to Tonga from London which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from London to Tonga?

momondo provides multiple filters to help you find the best flight to Tonga from London. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from London to Tonga right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Tonga from London. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Popular Cities in Tonga

Popular flights according to clicks in the last 7 days on momondo
Flights to Nuku‘alofafrom £1,553