How long is the flight from London to Alaska?

There are many flights that can get you from London to Alaska in 17h 37m. Fly via Scandinavian Airlines, Icelandair, or Alaska Airlines to get the fastest option. London and Alaska are separated by a distance of 4213 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 Heathrow - Fairbanks.

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

Virgin Atlantic, British Airways and Air Canada 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.

£470+ 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 22 August 2026.

Thu 17/919:30 -

2 stops33h 45m

Fri 25/908:00 -

2 stops20h 35m

Deal found 17/8£574

Sat 3/1006:40 -

2 stops22h 35m

Sun 11/1006:30 -

2 stops24h 30m

Deal found 20/8£574

Sat 26/906:40 -

2 stops22h 35m

Tue 29/908:00 -

2 stops23h 00m

Deal found 19/8£578

Fri 9/1018:40 -

2 stops35h 01m

Sun 11/1006:30 -

2 stops41h 50m

Deal found 22/8£581

Tue 22/906:40 -

3 stops26h 47m

Fri 25/908:00 -

2 stops20h 35m

Deal found 17/8£586

Thu 20/810:20 -

1 stop13h 30m

Sat 5/916:50 -

1 stop16h 55m

Deal found 19/8£660

Sat 29/810:20 -

1 stop13h 30m

Thu 10/917:05 -

1 stop16h 45m

Deal found 17/8£662

Tue 6/1015:40 -

2 stops18h 59m

Tue 13/1012:24 -

2 stops17h 16m

Deal found 22/8£758

Sun 30/815:35 -

1 stop32h 30m

Thu 10/917:05 -

1 stop12h 40m

Deal found 19/8£770

Sun 30/817:15 -

2 stops30h 50m

Thu 10/917:05 -

2 stops21h 50m

Deal found 19/8£776

Fri 2/1015:40 -

2 stops19h 05m

Thu 8/1001:31 -

2 stops28h 09m

Deal found 17/8£785

Sat 12/910:20 -

1 stop13h 30m

Mon 21/908:07 -

2 stops25h 43m

Deal found 22/8£799

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 22 August 2026.

Tue 22/906:40 -

3 stops26h 47m

Fri 25/908:00 -

2 stops20h 35m

Deal found 17/8£586

Mon 11/110:25 -

2 stops20h 29m

Sat 16/102:18 -

2 stops27h 42m

Deal found 21/8£745

Tue 6/1015:40 -

2 stops18h 59m

Tue 13/1012:24 -

2 stops17h 16m

Deal found 22/8£758

Thu 8/1017:00 -

1 stop17h 37m

Sun 11/1001:17 -

1 stop28h 48m

Deal found 20/8£1,025

Wed 7/1010:20 -

2 stops20h 16m

Wed 14/1005:36 -

2 stops28h 09m

Deal found 20/8£1,181

Fri 9/1007:05 -

3 stops26h 30m

Sat 10/1001:40 -

2 stops29h 20m

Deal found 22/8£594

Mon 5/1009:55 -

2 stops23h 35m

Sun 11/1001:50 -

1 stop28h 45m

Deal found 21/8£1,217

Thu 1/1008:25 -

2 stops21h 35m

Thu 8/1011:29 -

2 stops20h 51m

Deal found 17/8£1,241

Tue 6/1010:00 -

2 stops19h 41m

Tue 13/1006:30 -

2 stops18h 00m

Deal found 22/8£1,247

Fri 2/1006:40 -

2 stops22h 35m

Thu 8/1001:40 -

3 stops29h 45m

Deal found 18/8£594

Sun 4/1006:40 -

3 stops26h 47m

Sun 11/1006:30 -

2 stops26h 10m

Deal found 20/8£597

Tue 6/1013:05 -

2 stops18h 43m

Tue 13/1012:24 -

2 stops22h 56m

Deal found 22/8£764

Fri 2/1015:40 -

2 stops19h 05m

Thu 8/1001:31 -

2 stops28h 09m

Deal found 17/8£785

Sat 3/1006:40 -

2 stops22h 35m

Sat 10/1006:30 -

3 stops25h 30m

Deal found 18/8£597

Sat 12/910:20 -

1 stop13h 30m

Mon 21/908:07 -

2 stops25h 43m

Deal found 22/8£799

Thu 8/1017:00 -

2 stops24h 46m

Sun 18/1005:09 -

2 stops24h 56m

Deal found 20/8£1,033

Thu 5/1112:15 -

2 stops22h 35m

Thu 19/1105:30 -

2 stops29h 00m

Deal found 17/8£861

Thu 3/915:40 -

2 stops18h 58m

Mon 7/912:22 -

2 stops17h 18m

Deal found 20/8£956

Fri 9/1017:00 -

1 stop17h 37m

Sat 17/1005:36 -

1 stop24h 29m

Deal found 20/8£1,046

Wed 16/1211:55 -

2 stops23h 43m

Thu 25/205:50 -

2 stops20h 05m

Deal found 19/8£866

Sat 26/908:25 -

2 stops21h 35m

Tue 29/908:00 -

2 stops16h 30m

Deal found 19/8£1,241

Thu 1/1015:40 -

2 stops27h 21m

Wed 7/1002:29 -

2 stops27h 11m

Deal found 17/8£871

Tue 15/910:00 -

2 stops20h 00m

Sun 20/908:00 -

2 stops16h 30m

Deal found 17/8£1,286

Thu 5/1114:45 -

1 stop20h 05m

Thu 19/1105:30 -

1 stop21h 50m

Deal found 17/8£1,076

Thu 24/908:25 -

2 stops21h 35m

Sun 27/911:51 -

2 stops21h 39m

Deal found 18/8£1,270

Sat 3/1010:00 -

2 stops20h 00m

Sun 11/1006:30 -

2 stops18h 00m

Deal found 20/8£1,319

Sun 11/1017:00 -

1 stop17h 37m

Thu 15/1005:36 -

1 stop24h 29m

Deal found 20/8£1,120

Sat 3/1017:45 -

1 stop16h 52m

Sat 10/1009:44 -

2 stops20h 51m

Deal found 19/8£969

Fri 2/1010:00 -

2 stops20h 00m

Fri 9/1006:30 -

2 stops18h 00m

Deal found 18/8£1,320

Fri 9/1015:40 -

2 stops18h 57m

Thu 15/1005:36 -

2 stops24h 04m

Deal found 20/8£977

Find flight deals from London to Alaska

Round-trip from	£574
One-way from	£470
Popular in	December
Cheapest in	October
Average price	£887

Scandinavian Airlines
17/9-25/9
4 total stops
54h 20m total
London to Alaska

Search Deals

2/9
2 total stops
25h 45m 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 (£21 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

08:00-13:35

2 stops20h 35m

£586

LondonAnchorage

LHR London Heathrow - ANC Anchorage

LHRANC

London Heathrow

Fri 9/10

07:05-00:35

3 stops26h 30m

Anchorage

Sat 10/10

01:40-16:00

2 stops29h 20m

£594

LondonAnchorage

LHR London Heathrow - ANC Anchorage

LHRANC

London Heathrow

Fri 2/10

06:40-20:15

2 stops22h 35m

Anchorage

Thu 8/10

01:40-16:25

3 stops29h 45m

£594

LondonAnchorage

LHR London Heathrow - ANC Anchorage

LHRANC

London Heathrow

Sun 4/10

06:40-00:27

3 stops26h 47m

Anchorage

Sun 11/10

06:30-17:40

2 stops26h 10m

£597

LondonAnchorage

LHR London Heathrow - ANC Anchorage

LHRANC

London Heathrow

Sat 3/10

06:40-20:15

2 stops22h 35m

Anchorage

Sat 10/10

06:30-17:00

3 stops25h 30m

£597

LondonFairbanks

LGW London Gatwick - FAI Fairbanks

LGWFAI

London Gatwick

Mon 11/1

10:25-21:54

2 stops20h 29m

Fairbanks

Sat 16/1

02:18-15:00

2 stops27h 42m

£745

Fastest return journey

LondonAnchorage

LGW London Gatwick - ANC Anchorage

LGWANC

London Gatwick

Tue 6/10

15:40-01:39

2 stops18h 59m

Anchorage

Tue 13/10

12:24-14:40

2 stops17h 16m

£758

LondonAnchorage

LHR London Heathrow - ANC Anchorage

LHRANC

London Heathrow

Tue 6/10

13:05-22:48

2 stops18h 43m

Anchorage

Tue 13/10

12:24-20:20

2 stops22h 56m

£764

LondonAnchorage

LGW London Gatwick - ANC Anchorage

LGWANC

London Gatwick

Fri 2/10

15:40-01:45

2 stops19h 05m

Anchorage

Thu 8/10

01:31-14:40

2 stops28h 09m

£785

LondonAnchorage

LGW London Gatwick - ANC Anchorage

LGWANC

London Gatwick

Sat 12/9

10:20-14:50

1 stop13h 30m

Anchorage

Mon 21/9

08:07-18:50

2 stops25h 43m

£799

Flights are sorted by cheapest return flights first.

Deals found on 18/8

Showing 1-10 of 59 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

LGW-ANC

LHR-FAI

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

LGW-ANC

LHR-FAI

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 £716). Flying from London to Alaska in June is currently the most expensive (average of £1,169). 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 £755 and £1,187 in September.
The cheapest return price found within the last 5 days was £574 on Scandinavian Airlines (17 Sept–25 Sept).

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

12,834 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

12,834 reviews

Alaska Airlines

7.9

Good

12,834 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

12,834 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Jun 2026

LHR - SEA

Icelandair

6.9

Okay

732 reviews

Alaska Airlines

7.9

Good

12,834 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Jun 2026

LHR - SEA

British Airways

6.7

Okay

8,183 reviews

Alaska Airlines

7.9

Good

12,834 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Jun 2026

LHR - SEA

Condor

6.5

Okay

557 reviews

Alaska Airlines

7.9

Good

12,834 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 17h 37m. Fly via Scandinavian Airlines, Icelandair, or Alaska Airlines to get the fastest option. London and Alaska are separated by a distance of 4213 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 Heathrow - Fairbanks.
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 £716). Flying from London to Alaska in June is currently the most expensive (average of £1,169). 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

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Complete your trip

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Popular flights

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£578	Average£685	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights
Condor	Cheapest£613	Average£1,022	FlexibilityNo cancel fee	On-time76%	Search Condor flights
Icelandair	Cheapest£620	Average£840	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Alaska Airlines	Cheapest£817	Average£1,069	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 £470

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 2/9. 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 22 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 22 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 22 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 22 August 2026.

Last-minute flights from London to AlaskaDiscover last-minute flight deals from London to Alaska. Data last updated 22 August 2026 and is based on user searches.

Discover last-minute flight deals from London to Alaska. Data last updated 22 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 22 August 2026.

Search for one-way flight options from London to Alaska. Find affordable one-way fares based on user searches. Data last updated 22 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 £755 and £1,187 in September.The cheapest return price found within the last 5 days was £574 on Scandinavian Airlines (17 Sept–25 Sept).

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 22 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?

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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 22 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 22 August 2026.

Last-minute flights from London to Alaska
Discover last-minute flight deals from London to Alaska. Data last updated 22 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 22 August 2026.

London to Alaska flights typically cost between £755 and £1,187 in September.
The cheapest return price found within the last 5 days was £574 on Scandinavian Airlines (17 Sept–25 Sept).