Cheap flights from London to Alaska from £381

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 5/11. Fares are subject to change and may not be available on all flights or dates of travel.
LON — ANC
18 Oct — 25 Oct1
1 adult
1 adult, Economy

Cheap flight deals from London to Alaska

Keep the following information in mind while searching for London to Alaska flight deals. Data was last updated 18 September 2025.

Round-trip from

£626

One-way from

£381

Popular in

January

Cheapest in

April

Average price

£772
7/11-22/11
  • 7/11-22/11
  • 2 total stops
  • 53h 51m total
  • London to Alaska
5/11
  • 5/11
  • 3 total stops
  • 51h 28m total
  • London to Alaska
Highest demand for flights based on searches. 5% potential increase in price (£44 potential increase over avg. return price).
Cheapest flight prices on average. 1% potential price decrease (£13 potential savings vs. average return price).
Average for round-trip flights in September 2025

Find flight deals from London to Alaska

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 18 September 2025.

Tue 14/1015:40LGW - ANC
2 stops40h 05mIcelandair
Tue 21/1010:00ANC - LGW
2 stops19h 40mIcelandair
Deal found 15/9£613
Tue 14/1021:25LHR - ANC
2 stops34h 20mIcelandair
Tue 21/1010:00ANC - LHR
2 stops16h 55mIcelandair
Deal found 15/9£615
Fri 7/1111:20LHR - ANC
1 stop22h 10mMultiple Airlines
Sat 22/1100:09ANC - LHR
1 stop31h 41mMultiple Airlines
Deal found 15/9£626
Tue 14/1015:40LGW - ANC
2 stops40h 05mIcelandair
Tue 28/1010:00ANC - LGW
2 stops16h 55mIcelandair
Deal found 17/9£657
Fri 7/1111:55LGW - ANC
2 stops18h 53mIcelandair
Sun 23/1109:00ANC - LGW
2 stops16h 55mIcelandair
Deal found 16/9£662
Fri 7/1112:15LHR - ANC
2 stops18h 33mIcelandair
Sun 23/1109:00ANC - LHR
2 stops16h 50mIcelandair
Deal found 16/9£665
Sat 1/1120:35LHR - ANC
2 stops34h 13mIcelandair
Sat 8/1108:00ANC - LHR
2 stops26h 30mIcelandair
Deal found 17/9£667
Wed 15/1015:40LGW - ANC
2 stops28h 28mMultiple Airlines
Tue 28/1010:00ANC - LGW
2 stops16h 55mMultiple Airlines
Deal found 17/9£671
Mon 13/1015:40LGW - ANC
2 stops41h 47mMultiple Airlines
Tue 28/1010:00ANC - LGW
2 stops16h 55mMultiple Airlines
Deal found 17/9£673
Thu 6/1111:55LGW - ANC
2 stops18h 53mIcelandair
Thu 20/1108:00ANC - LGW
2 stops17h 55mIcelandair
Deal found 16/9£674
Thu 6/1112:15LHR - ANC
2 stops18h 33mIcelandair
Thu 20/1108:00ANC - LHR
2 stops26h 30mIcelandair
Deal found 16/9£677
Tue 14/1013:05LHR - ANC
2 stops20h 22mMultiple Airlines
Tue 28/1009:00ANC - LHR
2 stops17h 50mMultiple Airlines
Deal found 17/9£680

Cheapflights Fare Finder

 
Customise your flight search to find flights from London to Alaska 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 18 September 2025.
Use the filters below to find and compare flights from London to Alaska that are best for you.

Fly from

London

Fly to

Alaska

Route

Depart

Return

Price

LondonAnchorage

LGW - ANC

LGWANC

London Gatwick

Tue 14/10

15:40-22:45

2 stops40h 05m

Anchorage

Tue 21/10

10:00-14:40

2 stops19h 40m

£613

LondonAnchorage

LGW - ANC

LGWANC

London Gatwick

Thu 6/11

11:55-21:48

2 stops18h 53m

Anchorage

Thu 20/11

08:00-10:55

2 stops17h 55m

£674

LondonAnchorage

LGW - ANC

LGWANC

London Gatwick

Sat 1/11

11:55-22:48

2 stops18h 53m

Anchorage

Sat 8/11

08:00-10:55

2 stops17h 55m

£687

LondonAnchorage

LGW - ANC

LGWANC

London Gatwick

Mon 13/10

15:40-00:27

2 stops41h 47m

Anchorage

Sun 26/10

01:04-10:55

2 stops25h 51m

£690

LondonAnchorage

LGW - ANC

LGWANC

London Gatwick

Fri 31/10

11:55-22:48

2 stops18h 53m

Anchorage

Fri 7/11

08:00-10:55

2 stops17h 55m

£698

LondonAnchorage

LGW - ANC

LGWANC

London Gatwick

Tue 14/10

15:40-13:20

2 stops54h 40m

Anchorage

Mon 27/10

16:30-10:55

2 stops34h 25m

£700

LondonAnchorage

LGW - ANC

LGWANC

London Gatwick

Tue 14/10

15:40-22:45

2 stops40h 05m

Anchorage

Sun 26/10

10:00-10:55

2 stops16h 55m

£716

LondonAnchorage

LGW - ANC

LGWANC

London Gatwick

Tue 14/10

15:40-22:45

2 stops40h 05m

Anchorage

Sat 25/10

13:10-11:55

2 stops37h 45m

£725

LondonAnchorage

LHR - ANC

LHRANC

London Heathrow

Thu 16/10

13:05-23:44

2 stops19h 39m

Anchorage

Thu 23/10

11:16-11:55

2 stops39h 39m

£733

LondonAnchorage

LHR - ANC

LHRANC

London Heathrow

Wed 15/10

06:40-22:43

2 stops25h 03m

Anchorage

Wed 22/10

06:00-18:30

3 stops27h 30m

£736

Flights are sorted by cheapest return flights first.

Deals found on 17/9

Showing 1-10 of 49 results
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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.
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

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 £987). Flying from London to Alaska in July is currently the most expensive (average of £1,736). 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.

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

Find hourly flight availability from London to Alaska. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 18 September 2025.

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.

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

Reviews of airlines servicing Alaska

Get insights into the airlines that provide service to Alaska. 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 Alaska. Reviews last updated 18 September 2025.
See what other customers who have flown with Scandinavian 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.

Food

6.7

Boarding

7.6

Entertainment

6.6

Comfort

7.3

Crew

8.0

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Scott,Sept 2025

CPH - LAX

Unfortunately, usual rubbish at the gate for SAS reporting that boarding is underway, but clearly that was not the case. Internet worked to start with, but at some point it wouldn't connect using any of the devices I had with me and remained that way for the rest of the trip; could not even blame being out of network coverage, for all of that, as surely it should work across continental USA - worked for so little of the flight for me that I wouldn't have advertised that such a service was actually available; if I had had to pay extra for internet, I would have been demanding that money back.

Food

6.7

Boarding

7.6

Entertainment

6.6

Comfort

7.3

Crew

8.0

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Scott,Sept 2025

CPH - LAX

Unfortunately, usual rubbish at the gate for SAS reporting that boarding is underway, but clearly that was not the case. Internet worked to start with, but at some point it wouldn't connect using any of the devices I had with me and remained that way for the rest of the trip; could not even blame being out of network coverage, for all of that, as surely it should work across continental USA - worked for so little of the flight for me that I wouldn't have advertised that such a service was actually available; if I had had to pay extra for internet, I would have been demanding that money back.

Food

6.7

Boarding

7.6

Entertainment

6.6

Comfort

7.3

Crew

8.0

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Scott,Sept 2025

CPH - LAX

Unfortunately, usual rubbish at the gate for SAS reporting that boarding is underway, but clearly that was not the case. Internet worked to start with, but at some point it wouldn't connect using any of the devices I had with me and remained that way for the rest of the trip; could not even blame being out of network coverage, for all of that, as surely it should work across continental USA - worked for so little of the flight for me that I wouldn't have advertised that such a service was actually available; if I had had to pay extra for internet, I would have been demanding that money back.

Food

6.7

Boarding

7.6

Entertainment

6.6

Comfort

7.3

Crew

8.0

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Scott,Sept 2025

CPH - LAX

Unfortunately, usual rubbish at the gate for SAS reporting that boarding is underway, but clearly that was not the case. Internet worked to start with, but at some point it wouldn't connect using any of the devices I had with me and remained that way for the rest of the trip; could not even blame being out of network coverage, for all of that, as surely it should work across continental USA - worked for so little of the flight for me that I wouldn't have advertised that such a service was actually available; if I had had to pay extra for internet, I would have been demanding that money back.

Food

6.7

Boarding

7.6

Entertainment

6.6

Comfort

7.3

Crew

8.0

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Scott,Sept 2025

CPH - LAX

Unfortunately, usual rubbish at the gate for SAS reporting that boarding is underway, but clearly that was not the case. Internet worked to start with, but at some point it wouldn't connect using any of the devices I had with me and remained that way for the rest of the trip; could not even blame being out of network coverage, for all of that, as surely it should work across continental USA - worked for so little of the flight for me that I wouldn't have advertised that such a service was actually available; if I had had to pay extra for internet, I would have been demanding that money back.

Food

6.7

Boarding

7.6

Entertainment

6.6

Comfort

7.3

Crew

8.0

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Scott,Sept 2025

CPH - LAX

Unfortunately, usual rubbish at the gate for SAS reporting that boarding is underway, but clearly that was not the case. Internet worked to start with, but at some point it wouldn't connect using any of the devices I had with me and remained that way for the rest of the trip; could not even blame being out of network coverage, for all of that, as surely it should work across continental USA - worked for so little of the flight for me that I wouldn't have advertised that such a service was actually available; if I had had to pay extra for internet, I would have been demanding that money back.

Related info for your journey

Find useful and relevant information for your journey from London to Alaska. 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 London to Alaska?

    There are many flights that can get you from London to Alaska in 25h 03m. Fly via Icelandair, Scandinavian Airlines, or Delta to get the fastest option. London and Alaska are separated by a distance of 4471 mi. This flight may include one or multiple stops.

  • What are the most popular routes from London to Alaska?

  • 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 £987). Flying from London to Alaska in July is currently the most expensive (average of £1,736). 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

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Alternative routes for London to Alaska

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

Top 6 airlines flying from London to Alaska

Discover the top 6 airlines that operate flights from London to Alaska. 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 18 September 2025.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest£528Average£771FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
IcelandairCheapest£641Average£783FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
British AirwaysCheapest£698Average£1,086FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LufthansaCheapest£791Average£1,234FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Virgin AtlanticCheapest£1,036Average£1,192FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
United AirlinesCheapest£1,049Average£1,248FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

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

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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.

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