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Cheap flights from London to Alaska from £520

LON — ANC
15 Dec — 22 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from London to Alaska

Enter your travel dates to find the best prices.

Cheapest flights from London to Alaska

Thu 10/1212:15 -
2 stops22h 58m
Thu 24/1216:12 -
2 stops42h 18m
Deal found 14/11£759
Thu 10/1210:25 -
2 stops20h 52m
Thu 24/1211:11 -
2 stops18h 49m
Deal found 14/11£814
Fri 25/1212:15 -
2 stops19h 23m
Wed 6/101:48 -
2 stops32h 42m
Deal found 13/11£847
Sat 26/1212:15 -
2 stops20h 24m
Thu 7/101:48 -
2 stops24h 02m
Deal found 13/11£918
Fri 4/1214:45 -
1 stop16h 10m
Fri 11/1205:00 -
2 stops22h 20m
Deal found 11/11£966
Sat 26/1214:45 -
1 stop17h 54m
Thu 7/100:45 -
2 stops26h 35m
Deal found 13/11£1,003
Fri 25/1214:45 -
1 stop16h 53m
Thu 31/1201:29 -
1 stop25h 51m
Deal found 10/11£1,008
Fri 25/1212:15 -
2 stops19h 23m
Thu 31/1202:50 -
1 stop24h 30m
Deal found 10/11£1,040
Fri 4/1212:20 -
1 stop21h 01m
Thu 10/1202:15 -
1 stop23h 25m
Deal found 11/11£1,058
Thu 10/1214:45 -
1 stop17h 36m
Thu 24/1207:00 -
1 stop20h 20m
Deal found 14/11£1,078
Fri 25/1214:45 -
1 stop32h 40m
Thu 7/108:00 -
1 stop19h 20m
Deal found 13/11£1,096
Sat 26/1212:15 -
2 stops18h 20m
Sat 2/118:32 -
1 stop32h 48m
Deal found 11/11£1,180

Find flight deals from London to Alaska

Round-trip from

£733

One-way from

£520

Popular in

December

Cheapest in

May
13/1-20/1
  • 13/1-20/1
  • 4 total stops
  • 59h 25m total
  • London to Alaska
Search Deals
13/1-31/12
  • 13/1-31/12
  • 2 total stops
  • 35h 25m total
  • London to Alaska
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£47 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£23 potential savings vs. average return price).
Search Deals

Cheapflights Fare Finder

 
Use the filters below to find and compare flights from London to Alaska that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonAnchorage

LGW London Gatwick - ANC Anchorage

LGWANC

London Gatwick

Wed 13/1

09:45-12:10

2 stops35h 25m

Anchorage

Wed 31/12

00:00-11:00

Nonstop0h 00m

£520

LondonFairbanks

LHR London Heathrow - FAI Fairbanks

LHRFAI

London Heathrow

Fri 26/2

14:50-02:05

3 stops44h 15m

Fairbanks

Wed 31/12

00:00-11:00

Nonstop0h 00m

£539

LondonAnchorage

LGW London Gatwick - ANC Anchorage

LGWANC

London Gatwick

Sun 22/11

09:50-10:12

3 stops57h 22m

Anchorage

Wed 31/12

00:00-11:00

Nonstop0h 00m

£614

LondonAnchorage

LGW London Gatwick - ANC Anchorage

LGWANC

London Gatwick

Sat 13/3

16:10-23:33

2 stops40h 23m

Anchorage

Wed 31/12

00:00-11:00

Nonstop0h 00m

£622

LondonFairbanks

LGW London Gatwick - FAI Fairbanks

LGWFAI

London Gatwick

Fri 26/2

09:00-13:06

3 stops37h 06m

Fairbanks

Wed 31/12

00:00-11:00

Nonstop0h 00m

£637

LondonFairbanks

LHR London Heathrow - FAI Fairbanks

LHRFAI

London Heathrow

Fri 26/2

14:45-13:06

1 stop31h 21m

Fairbanks

Wed 31/12

00:00-11:00

Nonstop0h 00m

£640

LondonAnchorage

LGW London Gatwick - ANC Anchorage

LGWANC

London Gatwick

Mon 23/11

19:55-18:39

3 stops55h 44m

Anchorage

Wed 31/12

00:00-11:00

Nonstop0h 00m

£663

LondonAnchorage

LGW London Gatwick - ANC Anchorage

LGWANC

London Gatwick

Fri 12/3

16:40-00:33

2 stops40h 53m

Anchorage

Wed 31/12

00:00-11:00

Nonstop0h 00m

£683

LondonAnchorage

LGW London Gatwick - ANC Anchorage

LGWANC

London Gatwick

Sat 21/11

11:40-11:03

2 stops32h 23m

Anchorage

Wed 31/12

00:00-11:00

Nonstop0h 00m

£700

LondonAnchorage

LGW London Gatwick - ANC Anchorage

LGWANC

London Gatwick

Mon 14/12

10:25-23:21

2 stops21h 56m

Anchorage

Wed 31/12

00:00-11:00

Nonstop0h 00m

£701

Flights are sorted by cheapest return flights first.

Deals found on 12/11

Showing 1-10 of 49 resultsSorted by cheapest first
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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

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, May is the cheapest month in which you can book a flight from London to Alaska (average of £745). Flying from London to Alaska in December is currently the most expensive (average of £1,276). 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.

Reviews of airlines servicing Alaska

See what other customers who have flown with Alaska Airlines,Icelandair, andCondor 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
13,163 reviews
Check prices

Entertainment

7.0

Food

7.0

Crew

8.5

Boarding

8.1

Overall

7.9

Comfort

7.8

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.
Alaska Airlines
7.9
Good
13,163 reviews
Alaska Airlines
7.9
Good
13,163 reviews
Check prices

Entertainment

7.0

Food

7.0

Crew

8.5

Boarding

8.1

Overall

7.9

Comfort

7.8

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.
Icelandair
7.0
Good
766 reviews
Alaska Airlines
7.9
Good
13,163 reviews
Check prices

Entertainment

7.0

Food

7.0

Crew

8.5

Boarding

8.1

Overall

7.9

Comfort

7.8

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.
Condor
6.7
Okay
627 reviews
Alaska Airlines
7.9
Good
13,163 reviews
Check prices

Entertainment

7.0

Food

7.0

Crew

8.5

Boarding

8.1

Overall

7.9

Comfort

7.8

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.
British Airways
6.7
Okay
8,279 reviews
Alaska Airlines
7.9
Good
13,163 reviews
Check prices

Entertainment

7.0

Food

7.0

Crew

8.5

Boarding

8.1

Overall

7.9

Comfort

7.8

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.

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 20h 20m. Fly via Icelandair, Condor, or Alaska Airlines 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?

    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, May is the cheapest month in which you can book a flight from London to Alaska (average of £745). Flying from London to Alaska in December is currently the most expensive (average of £1,276). 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 for London to Alaska

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Top 2 airlines flying from London to Alaska

AirlineCheapestAverageFlexibilityOn-time
CondorCheapest£633Average£1,055FlexibilityNo cancel feeOn-time76%
Search Condor flights
Alaska AirlinesCheapest£854Average£1,104FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights

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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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