How long is the flight from London to Alaska?

There are many flights that can get you from London to Alaska in 19h 41m. Fly via Scandinavian Airlines, Virgin Atlantic, or KLM to get the fastest option. London and Alaska are separated by a distance of 4475 mi. This flight may include one or multiple stops.

In terms of precipitation, rainfall in Alaska ranges from 13.0 - 84.0 inches per month. August is typically the wettest month, when rainfall can reach 84.0 mm. April is typically the driest time to visit Alaska when rainfall is around 13.0 mm.

If weather is an important factor for your trip to Alaska, 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 15.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -8.0 C).

What are the most popular routes from London to Alaska?

The most popular route from London to Alaska is London Heathrow - Anchorage. You may also consider London Gatwick - Anchorage or London City - Anchorage.

What are the most popular airlines that fly from London to Alaska?

Alaska Airlines, Icelandair and Condor are the most popular airlines when flying from London to Alaska.

What is the cheapest time of day to fly from LON to AK?

When flying from London to Alaska, 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 London to Alaska that include hotel bookings?

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

How can I find direct flights from London to Alaska?

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

Can I find deals for business class flights from London to Alaska?

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

£387+ Cheap Flights from London to Alaska

Cheap flight deals from London to Alaska

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from London to Alaska
Explore the most affordable flight options available from London to Alaska. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 August 2026.

Fri 9/1010:20 -

2 stops47h 15m

Sun 11/1006:30 -

2 stops27h 00m

Deal found 24/8£582

Sat 3/1017:00 -

2 stops40h 27m

Sat 10/1001:40 -

2 stops35h 00m

Deal found 25/8£582

Thu 1/1019:30 -

2 stops33h 45m

Sat 10/1001:40 -

2 stops35h 00m

Deal found 25/8£586

Tue 22/906:40 -

3 stops26h 47m

Fri 25/906:12 -

2 stops22h 23m

Deal found 25/8£591

Sun 11/1006:15 -

2 stops28h 22m

Sun 18/1005:36 -

1 stop20h 44m

Deal found 27/8£699

Sat 10/1006:40 -

2 stops27h 05m

Fri 16/1001:50 -

3 stops29h 10m

Deal found 26/8£708

Thu 24/911:40 -

1 stop18h 15m

Wed 30/901:28 -

1 stop24h 52m

Deal found 27/8£720

Thu 8/1015:40 -

2 stops18h 59m

Wed 14/1002:29 -

2 stops27h 11m

Deal found 23/8£768

Thu 8/1015:40 -

2 stops18h 57m

Wed 14/1001:17 -

2 stops28h 23m

Deal found 25/8£803

Tue 22/915:40 -

2 stops18h 58m

Tue 29/909:07 -

2 stops20h 33m

Deal found 23/8£831

Mon 12/1010:20 -

2 stops20h 28m

Wed 21/1010:22 -

2 stops23h 23m

Deal found 24/8£867

Wed 7/1015:40 -

2 stops40h 08m

Tue 13/1001:31 -

2 stops28h 09m

Deal found 23/8£892

Best flights from London to Alaska
Discover carefully curated flight deals from London to Alaska that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 27 August 2026.

Tue 22/906:40 -

3 stops26h 47m

Fri 25/908:00 -

2 stops23h 00m

Deal found 26/8£591

Sat 10/1006:40 -

2 stops27h 05m

Fri 16/1001:50 -

3 stops29h 10m

Deal found 26/8£708

Sat 10/1021:25 -

2 stops58h 23m

Sat 17/1012:24 -

2 stops38h 31m

Deal found 26/8£890

Fri 9/1017:00 -

2 stops27h 50m

Fri 16/1014:39 -

1 stop15h 26m

Deal found 25/8£1,030

Sat 10/1019:40 -

2 stops38h 57m

Sat 17/1005:36 -

2 stops24h 04m

Deal found 26/8£1,118

Tue 22/908:25 -

2 stops21h 35m

Tue 29/911:51 -

2 stops19h 49m

Deal found 23/8£1,227

Wed 7/1010:00 -

2 stops19h 41m

Wed 14/1011:29 -

2 stops20h 11m

Deal found 23/8£1,248

Tue 22/910:00 -

2 stops36h 32m

Thu 15/1001:50 -

2 stops24h 50m

Deal found 24/8£1,287

Thu 8/1015:40 -

2 stops18h 57m

Wed 14/1001:17 -

2 stops28h 23m

Deal found 25/8£803

Tue 22/915:40 -

2 stops18h 58m

Tue 29/909:07 -

2 stops20h 33m

Deal found 23/8£831

Mon 12/1010:20 -

2 stops20h 28m

Wed 21/1010:22 -

2 stops23h 23m

Deal found 24/8£867

Wed 7/1017:00 -

1 stop15h 39m

Tue 13/1002:29 -

1 stop27h 36m

Deal found 23/8£1,049

Wed 7/1013:05 -

2 stops21h 34m

Wed 14/1009:02 -

2 stops17h 53m

Deal found 23/8£880

Tue 22/917:00 -

1 stop17h 48m

Fri 16/1005:36 -

1 stop24h 29m

Deal found 24/8£1,068

Thu 8/1009:20 -

2 stops24h 25m

Wed 14/1001:50 -

2 stops29h 50m

Deal found 23/8£1,246

Mon 21/909:20 -

2 stops20h 40m

Mon 28/908:00 -

2 stops16h 30m

Deal found 24/8£1,268

Thu 8/1015:40 -

2 stops18h 59m

Wed 14/1002:29 -

2 stops27h 11m

Deal found 24/8£881

Thu 5/1114:45 -

1 stop20h 05m

Thu 19/1112:13 -

1 stop15h 07m

Deal found 25/8£1,091

Thu 8/1010:00 -

2 stops19h 41m

Thu 15/1006:30 -

2 stops18h 00m

Deal found 23/8£1,279

Wed 7/1015:40 -

2 stops40h 08m

Tue 13/1001:31 -

2 stops28h 09m

Deal found 23/8£892

Sun 11/1020:15 -

2 stops37h 30m

Sat 17/1001:50 -

2 stops22h 40m

Deal found 27/8£1,322

Sat 17/1008:25 -

2 stops21h 16m

Sat 24/1006:30 -

2 stops22h 45m

Deal found 25/8£1,477

Thu 24/910:00 -

2 stops20h 00m

Thu 1/1008:00 -

2 stops16h 30m

Deal found 24/8£1,298

Sun 11/1010:20 -

2 stops24h 17m

Sun 18/1005:36 -

2 stops28h 14m

Deal found 27/8£901

Sun 20/920:45 -

2 stops28h 42m

Sun 27/906:00 -

2 stops16h 55m

Deal found 23/8£1,298

Sun 11/1010:20 -

2 stops20h 28m

Sun 18/1010:22 -

2 stops23h 28m

Deal found 27/8£908

Sun 20/920:45 -

2 stops36h 45m

Sat 26/901:35 -

2 stops22h 55m

Deal found 23/8£1,328

Thu 24/915:40 -

2 stops18h 58m

Thu 1/1009:10 -

2 stops20h 30m

Deal found 24/8£918

Sun 11/1020:45 -

2 stops37h 00m

Sat 17/1001:50 -

2 stops22h 40m

Deal found 27/8£1,340

Mon 5/1010:20 -

2 stops20h 28m

Tue 20/1008:05 -

2 stops25h 45m

Deal found 25/8£925

Find flight deals from London to Alaska

Round-trip from	£582
One-way from	£387
Popular in	December
Cheapest in	October
Average price	£889

Scandinavian Airlines
9/10-11/10
4 total stops
74h 15m total
London to Alaska

Search Deals

3/9
3 total stops
32h 50m total
London to Alaska

Search Deals

High demand for flights, 0% potential price rise

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£22 potential savings vs. average return price).

Search Deals

Average for round-trip flights in August 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonAnchorage

LHR London Heathrow - ANC Anchorage

LHRANC

London Heathrow

Tue 22/9

06:40-00:27

3 stops26h 47m

Anchorage

Fri 25/9

08:00-16:00

2 stops23h 00m

£591

LondonFairbanks

LHR London Heathrow - FAI Fairbanks

LHRFAI

London Heathrow

Sat 10/10

06:40-00:45

2 stops27h 05m

Fairbanks

Fri 16/10

01:50-16:00

3 stops29h 10m

£708

LondonFairbanks

LGW London Gatwick - FAI Fairbanks

LGWFAI

London Gatwick

Thu 8/10

15:40-01:37

2 stops18h 57m

Fairbanks

Wed 14/10

01:17-14:40

2 stops28h 23m

£803

LondonAnchorage

LGW London Gatwick - ANC Anchorage

LGWANC

London Gatwick

Tue 22/9

15:40-01:38

2 stops18h 58m

Anchorage

Tue 29/9

09:07-14:40

2 stops20h 33m

£831

LondonAnchorage

LGW London Gatwick - ANC Anchorage

LGWANC

London Gatwick

Mon 12/10

10:20-21:48

2 stops20h 28m

Anchorage

Wed 21/10

10:22-18:45

2 stops23h 23m

£867

LondonAnchorage

LHR London Heathrow - ANC Anchorage

LHRANC

London Heathrow

Wed 7/10

13:05-01:39

2 stops21h 34m

Anchorage

Wed 14/10

09:02-11:55

2 stops17h 53m

£880

LondonAnchorage

LGW London Gatwick - ANC Anchorage

LGWANC

London Gatwick

Thu 8/10

15:40-01:39

2 stops18h 59m

Anchorage

Wed 14/10

02:29-14:40

2 stops27h 11m

£881

LondonAnchorage

LHR London Heathrow - ANC Anchorage

LHRANC

London Heathrow

Sat 10/10

21:25-22:48

2 stops58h 23m

Anchorage

Sat 17/10

12:24-11:55

2 stops38h 31m

£890

LondonAnchorage

LGW London Gatwick - ANC Anchorage

LGWANC

London Gatwick

Wed 7/10

15:40-22:48

2 stops40h 08m

Anchorage

Tue 13/10

01:31-14:40

2 stops28h 09m

£892

LondonFairbanks

LGW London Gatwick - FAI Fairbanks

LGWFAI

London Gatwick

Sun 11/10

10:20-01:37

2 stops24h 17m

Fairbanks

Sun 18/10

05:36-18:50

2 stops28h 14m

£901

Flights are sorted by cheapest return flights first.

Deals found on 23/8

Showing 1-10 of 60 resultsSorted by cheapest first

...

Best time to book a flight from London to Alaska

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

LHR-ANC

LHR-FAI

LGW-ANC

LGW-FAI

LCY-ANC

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 to Alaska

LON-USAK

LHR-ANC

LHR-FAI

LGW-ANC

LGW-FAI

What is the cheapest month to book a flight from London to Alaska?

Currently, January is the cheapest month in which you can book a flight from London to Alaska (average of £717). Flying from London to Alaska in June is currently the most expensive (average of £1,172). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost for a return flight from London to Alaska?

Airfare is below average for this route at the moment.

London to Alaska flights typically cost between £682 and £1,220 in October.
The cheapest return price found within the last 5 days was £582 on Scandinavian Airlines (9 Oct–11 Oct).

Reviews of airlines servicing Alaska

See what other customers who have flown with Alaska Airlines,Virgin Atlantic, andIcelandair from London to Alaska have to say. 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.

Alaska Airlines

7.9

Good

12,847 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.

Alaska Airlines

7.9

Good

12,847 reviews

Alaska Airlines

7.9

Good

12,847 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Jun 2026

LHR - SEA

Virgin Atlantic

7.4

Good

695 reviews

Alaska Airlines

7.9

Good

12,847 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Jun 2026

LHR - SEA

Icelandair

6.9

Okay

738 reviews

Alaska Airlines

7.9

Good

12,847 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Jun 2026

LHR - SEA

British Airways

6.7

Okay

8,194 reviews

Alaska Airlines

7.9

Good

12,847 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Jun 2026

LHR - SEA

Condor

6.6

Okay

566 reviews

Alaska Airlines

7.9

Good

12,847 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Jun 2026

LHR - SEA

Related info for your journey

How long is the flight from London to Alaska?
There are many flights that can get you from London to Alaska in 19h 41m. Fly via Scandinavian Airlines, Virgin Atlantic, or KLM to get the fastest option. London and Alaska are separated by a distance of 4475 mi. This flight may include one or multiple stops.
What are the most popular routes from London to Alaska?
The most popular route from London to Alaska is London Heathrow - Anchorage. You may also consider London Gatwick - Anchorage or London City - Anchorage.
Can I find deals for flights from London to Alaska that include hotel bookings?
Yes. In addition to deals on London to Alaska flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from London to Alaska?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Alaska.
Can I find deals for business class flights from London to Alaska?
Yes. Cheapflights offers flight deals from London to Alaska by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from London to Alaska?
Currently, January is the cheapest month in which you can book a flight from London to Alaska (average of £717). Flying from London to Alaska in June is currently the most expensive (average of £1,172). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes

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Top destinations

Alternative routes for London to Alaska

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Top 4 airlines flying from London to Alaska

Airline	Cheapest	Average	Flexibility	On-time
Scandinavian Airlines	Cheapest£579	Average£686	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights
Condor	Cheapest£614	Average£1,024	FlexibilityNo cancel fee	On-time76%	Search Condor flights
Icelandair	Cheapest£622	Average£842	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Alaska Airlines	Cheapest£819	Average£1,072	FlexibilityNo cancel fee	On-time75%	Search Alaska Airlines flights

Fly with Cheapflights

How does Cheapflights help users find flights from London to Alaska?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from London to Alaska. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from London to Alaska?

Cheapflights helps you find that perfect flight to Alaska from London by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from London to Alaska with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from London to Alaska flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from London to Alaska become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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Cheap flights from London to Alaska from £387

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 3/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from London to Alaska

Cheapest flights from London to AlaskaExplore the most affordable flight options available from London to Alaska. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 August 2026.

Explore the most affordable flight options available from London to Alaska. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 August 2026.

Best flights from London to AlaskaDiscover carefully curated flight deals from London to Alaska that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 27 August 2026.

Discover carefully curated flight deals from London to Alaska that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 27 August 2026.

Last-minute flights from London to AlaskaDiscover last-minute flight deals from London to Alaska. Data last updated 27 August 2026 and is based on user searches.

Discover last-minute flight deals from London to Alaska. Data last updated 27 August 2026 and is based on user searches.

One-way flights from London to AlaskaSearch for one-way flight options from London to Alaska. Find affordable one-way fares based on user searches. Data last updated 27 August 2026.

Search for one-way flight options from London to Alaska. Find affordable one-way fares based on user searches. Data last updated 27 August 2026.

Find flight deals from London to Alaska

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 London to Alaska that are best for you.

Best time to book a flight from London to Alaska

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

Cheapflights Insights

What is the cheapest month to book a flight from London to Alaska?

How much does it cost for a return flight from London to Alaska?

Airfare is below average for this route at the moment.

London to Alaska flights typically cost between £682 and £1,220 in October.The cheapest return price found within the last 5 days was £582 on Scandinavian Airlines (9 Oct–11 Oct).

Reviews of airlines servicing Alaska

See what other customers who have flown with Alaska Airlines,Virgin Atlantic, andIcelandair from London to Alaska have to say. 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

How long is the flight from London to Alaska?

What are the most popular routes from London to Alaska?

Can I find deals for flights from London to Alaska that include hotel bookings?

How can I find direct flights from London to Alaska?

Can I find deals for business class flights from London to Alaska?

What is the cheapest month to book a flight from London to Alaska?

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 London to Alaska

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

Complete your trip

Complete your trip to Alaska by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to United States

Book a non-stop flight to one of these other cities located in United States.

Search flights from London to Alaska by cabin class

Find flights from London to Alaska, based on your preferred cabin class, be it economy, premium economy, business, or first class.

London and Alaska flights

Browse other London and Alaska flight options. Last updated on 27 August 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

London to Alaska flights

Consider these flights travelling from London to Alaska.

Top 4 airlines flying from London to Alaska

Fly with Cheapflights

How does Cheapflights help users find flights from London to Alaska?

Why should you use Cheapflights to find cheap flight tickets from London to Alaska?

Can Cheapflights find flights from London to Alaska with no change fees?

Can Cheapflights notify me if prices for flights from London to Alaska become cheaper?

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from London to Alaska
Explore the most affordable flight options available from London to Alaska. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 August 2026.

Best flights from London to Alaska
Discover carefully curated flight deals from London to Alaska that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 27 August 2026.

Last-minute flights from London to Alaska
Discover last-minute flight deals from London to Alaska. Data last updated 27 August 2026 and is based on user searches.

One-way flights from London to Alaska
Search for one-way flight options from London to Alaska. Find affordable one-way fares based on user searches. Data last updated 27 August 2026.

London to Alaska flights typically cost between £682 and £1,220 in October.
The cheapest return price found within the last 5 days was £582 on Scandinavian Airlines (9 Oct–11 Oct).