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Cheap flights from London Heathrow Airport to Tonga from £1,576

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/10. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — TBU
2 May — 9 May1
1 adult
1 adult, Economy, 0 bags

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 2 April 2026.

Mon 12/1015:05
LHR
-
TBU
2 stops34h 30m
Air New Zealand
Mon 26/1010:05
TBU
-
LHR
2 stops32h 50m
Air New Zealand
Deal found 2/4£1,576
Fri 31/709:30
LHR
-
TBU
3 stops61h 05m
Multiple Airlines
Fri 14/805:40
TBU
-
LHR
3 stops43h 05m
Multiple Airlines
Deal found 1/4£1,925
Wed 1/416:15
LHR
-
TBU
2 stops35h 10m
Multiple Airlines
Wed 8/405:40
TBU
-
LHR
2 stops44h 30m
Multiple Airlines
Deal found 31/3£2,472

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 2 April 2026.

Round-trip from

£1,925
31/7-14/8
  • 31/7-14/8
  • 6 total stops
  • 104h 10m total
  • London to Tonga
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Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow 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, Cheapflights users made 858,174 searches. Data last updated 2 April 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Tonga that are best for you.

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Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

LondonNuku‘alofa

LHR - TBU

LHRTBU

London Heathrow

Fri 31/7

09:30-10:35

3 stops61h 05m

Nuku‘alofa Fua'Amotu Intl

Fri 14/8

05:40-12:45

3 stops43h 05m

£1,925

Flights are sorted by cheapest return flights first.

Deals found on 1/4

Sorted by cheapest first

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

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 2 April 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.
Air New Zealand
8.0
Very Good
623 reviews
Check prices

Boarding

8.2

Entertainment

7.4

Crew

8.5

Food

7.4

Comfort

8.0

Overall

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding
Air New Zealand
8.0
Very Good
623 reviews
Air New Zealand
8.0
Very Good
623 reviews
Check prices

Boarding

8.2

Entertainment

7.4

Crew

8.5

Food

7.4

Comfort

8.0

Overall

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding

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.

  • 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.

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Heathrow to Tonga

Discover the top airline that operate flights from Heathrow to Tonga. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 2 April 2026.
AirlineCheapestAverageFlexibilityOn-time
Air New ZealandCheapest£1,277Average£1,743FlexibilityNo cancel feeOn-time78%
Search Air New Zealand flights

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