How long is the flight from Kaua'i to London Heathrow Airport?

Airlines like United Airlines fly from Kaua'i to London Heathrow Airport in about 21h 26m. The time it takes to get you to your destination can typically vary by up to . There are 7198 mi between Kaua'i and London Heathrow Airport.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

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

When flying from Kaua'i to London Heathrow Airport, 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 Kaua'i to Heathrow that include hotel bookings?

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

How can I find direct flights from Kaua'i to Heathrow?

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

Can I find deals for business class flights from Kaua'i to Heathrow?

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

£397+ Flights from Kaua'i to London Heathrow Airport

Cheap flight deals from Kaua'i to Heathrow

Enter your travel dates to find the best prices.

Best flights from Kaua'i to Heathrow
Discover carefully curated flight deals from Kaua'i to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 23 December 2025.

Thu 19/223:59LIH - LHR

1 stop21h 26mUnited Airlines

Mon 23/213:45LHR - LIH

1 stop18h 59mUnited Airlines

Deal found 20/12£675

Wed 25/223:50LIH - LHR

2 stops51h 00mWestJet

Sat 28/214:50LHR - LIH

2 stops41h 52mWestJet

Deal found 21/12£950

Wed 25/214:25LIH - LHR

1 stop31h 00mLufthansa

Sat 28/206:35LHR - LIH

2 stops26h 09mLufthansa

Deal found 21/12£1,351

Find flight deals from Kaua'i to Heathrow

Round-trip from	£675
One-way from	£397
Popular in	June
Cheapest in	November
Average price	£1,112

United Airlines
19/2-23/2
2 total stops
40h 25m total
Kaua'i to London

Search Deals

WestJet
6/3
3 total stops
27h 00m total
Kaua'i to London

Search Deals

Highest demand for flights based on searches. 15% potential increase in price (£110 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease (£25 potential savings vs. average return price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

LihueLondon

LIH - LHR

LIHLHR

Lihue

Thu 19/2

23:59-07:25

1 stop21h 26m

London Heathrow

Mon 23/2

13:45-22:44

1 stop18h 59m

£675

LihueLondon

LIH - LHR

LIHLHR

Lihue

Wed 25/2

23:50-12:50

2 stops51h 00m

London Heathrow

Sat 28/2

14:50-22:42

2 stops41h 52m

£950

LihueLondon

LIH - LHR

LIHLHR

Lihue

Wed 25/2

14:25-07:25

1 stop31h 00m

London Heathrow

Sat 28/2

06:35-22:44

2 stops26h 09m

£1,351

LihueLondon

LIH - LHR

LIHLHR

Lihue

Fri 6/3

23:50-12:50

3 stops27h 00m

£397

LihueLondon

LIH - LHR

LIHLHR

Lihue

Fri 6/3

21:20-10:30

1 stop27h 10m

£404

Flights are sorted by cheapest return flights first.

Deals found on 22/12

Best time to book a flight from Kaua'i to Heathrow

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

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

Related info for your journey

How long is the flight from Kaua'i to London Heathrow Airport?
Airlines like United Airlines fly from Kaua'i to London Heathrow Airport in about 21h 26m. The time it takes to get you to your destination can typically vary by up to . There are 7198 mi between Kaua'i and London Heathrow Airport.
Can I find deals for flights from Kaua'i to Heathrow that include hotel bookings?
Yes. In addition to deals on Kaua'i to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Kaua'i to Heathrow?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Kaua'i to Heathrow.
Can I find deals for business class flights from Kaua'i to Heathrow?
Yes. Cheapflights offers flight deals from Kaua'i to Heathrow 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

Milton Keynes

Croydon

Slough

Hounslow

Northampton

Luton

Gatwick

Wembley

Ilford

Brentford

Colchester

Hayes

Watford

Crawley

Swindon

Bedford

Romford

Chichester

Eastbourne

Ipswich

Browse thousands of different options on Cheapflights for your next trip

Fly with Cheapflights

How does Cheapflights help users find flights from Kaua'i to Heathrow?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Heathrow from Kaua'i today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Kaua'i to Heathrow?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Kaua'i to Heathrow for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Kaua'i to Heathrow with no change fees?

Certainly. Search results for flights to Heathrow from Kaua'i shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Kaua'i to Heathrow become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Heathrow from Kaua'i today and book when prices fit your budget.

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 Kaua'i to London Heathrow Airport from £397

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/3. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Kaua'i to Heathrow

Best flights from Kaua'i to HeathrowDiscover carefully curated flight deals from Kaua'i to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 23 December 2025.

Discover carefully curated flight deals from Kaua'i to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 23 December 2025.

Find flight deals from Kaua'i to Heathrow

Keep the following information in mind while searching for Kaua'i to Heathrow flight deals. Data was last updated 23 December 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

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

Best time to book a flight from Kaua'i to Heathrow

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

Cheapflights Insights

Everything you need to know about your flight from Kaua'i to London Heathrow Airport

Related info for your journey

Find useful and relevant information for your journey from Kaua'i to Heathrow. 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 Kaua'i to London Heathrow Airport?

Can I find deals for flights from Kaua'i to Heathrow that include hotel bookings?

How can I find direct flights from Kaua'i to Heathrow?

Can I find deals for business class flights from Kaua'i to Heathrow?

Travelling to a place near London Heathrow Airport?

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 Kaua'i to Heathrow

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

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 Kaua'i to Heathrow?

Why should you use Cheapflights to find cheap flight tickets from Kaua'i to Heathrow?

Can Cheapflights find flights from Kaua'i to Heathrow with no change fees?

Can Cheapflights notify me if prices for flights from Kaua'i to Heathrow become cheaper?

100% Free

Book with Flexibility

Travel Smart

Best flights from Kaua'i to Heathrow
Discover carefully curated flight deals from Kaua'i to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 23 December 2025.