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Cheap flights from London to Alaska from £455

LON — ANC
3 Nov — 10 Nov1
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 5/1112:15 -
2 stops19h 31m
Wed 11/1101:48 -
2 stops24h 02m
Deal found 29/9£599
Thu 29/1011:55 -
2 stops19h 49m
Thu 12/1106:45 -
2 stops19h 10m
Deal found 4/10£606
Thu 5/1114:45 -
1 stop17h 01m
Thu 12/1109:03 -
1 stop18h 17m
Deal found 29/9£655
Tue 10/1114:45 -
1 stop17h 59m
Mon 16/1102:55 -
1 stop24h 25m
Deal found 29/9£656
Tue 10/1112:20 -
1 stop17h 28m
Mon 16/1102:55 -
2 stops19h 10m
Deal found 29/9£668
Tue 27/1014:45 -
1 stop16h 54m
Thu 12/1106:45 -
1 stop20h 35m
Deal found 29/9£673
Tue 27/1012:20 -
1 stop16h 31m
Wed 11/1101:48 -
2 stops20h 17m
Deal found 29/9£682
Mon 9/1120:35 -
2 stops36h 09m
Mon 16/1117:28 -
2 stops32h 22m
Deal found 2/10£731
Tue 27/1014:45 -
1 stop26h 04m
Tue 3/1114:06 -
1 stop13h 14m
Deal found 3/10£743
Mon 23/1114:45 -
1 stop19h 14m
Tue 8/1205:45 -
1 stop21h 35m
Deal found 1/10£750
Mon 23/1112:15 -
2 stops21h 44m
Tue 8/1212:04 -
1 stop15h 16m
Deal found 2/10£774
Thu 29/1011:55 -
2 stops20h 53m
Sat 14/1106:45 -
2 stops19h 10m
Deal found 30/9£781

Find flight deals from London to Alaska

Round-trip from

£603

One-way from

£455

Popular in

December

Cheapest in

January

Average price

£989
29/10-12/11
  • 29/10-12/11
  • 4 total stops
  • 47h 14m total
  • London to Alaska
Search Deals
4/3-31/12
  • 4/3-31/12
  • 3 total stops
  • 34h 12m total
  • London to Alaska
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (£27 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£21 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2026
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

Thu 4/3

16:10-17:22

3 stops34h 12m

Anchorage

Wed 31/12

00:00-11:00

Nonstop0h 00m

£455

LondonFairbanks

LGW London Gatwick - FAI Fairbanks

LGWFAI

London Gatwick

Fri 30/10

12:35-15:08

2 stops34h 33m

Fairbanks

Wed 31/12

00:00-11:00

Nonstop0h 00m

£510

LondonAnchorage

LGW London Gatwick - ANC Anchorage

LGWANC

London Gatwick

Thu 29/10

11:55-23:44

2 stops19h 49m

Anchorage

Thu 12/11

06:45-10:55

2 stops19h 10m

£606

LondonFairbanks

LGW London Gatwick - FAI Fairbanks

LGWFAI

London Gatwick

Wed 14/10

14:00-12:53

3 stops31h 53m

Fairbanks

Wed 31/12

00:00-11:00

Nonstop0h 00m

£664

LondonAnchorage

LGW London Gatwick - ANC Anchorage

LGWANC

London Gatwick

Fri 23/10

10:20-20:51

2 stops19h 31m

Anchorage

Wed 31/12

00:00-11:00

Nonstop0h 00m

£689

LondonFairbanks

LGW London Gatwick - FAI Fairbanks

LGWFAI

London Gatwick

Mon 12/10

15:50-15:08

3 stops56h 18m

Fairbanks

Wed 31/12

00:00-11:00

Nonstop0h 00m

£722

LondonAnchorage

LHR London Heathrow - ANC Anchorage

LHRANC

London Heathrow

Fri 23/10

06:00-13:37

3 stops40h 37m

Anchorage

Wed 31/12

00:00-11:00

Nonstop0h 00m

£723

LondonAnchorage

LHR London Heathrow - ANC Anchorage

LHRANC

London Heathrow

Sun 25/10

14:50-11:21

3 stops52h 31m

Anchorage

Wed 31/12

00:00-11:00

Nonstop0h 00m

£742

LondonJuneau

LHR London Heathrow - JNU Juneau Intl

LHRJNU

London Heathrow

Tue 27/10

14:45-08:49

1 stop26h 04m

Juneau Intl

Tue 3/11

14:06-12:20

1 stop13h 14m

£743

LondonFairbanks

LHR London Heathrow - FAI Fairbanks

LHRFAI

London Heathrow

Mon 23/11

14:45-00:59

1 stop19h 14m

Fairbanks

Tue 8/12

05:00-12:20

2 stops22h 20m

£757

Flights are sorted by cheapest return flights first.

Deals found on 30/9

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, January is the cheapest month in which you can book a flight from London to Alaska (average of £735). Flying from London to Alaska in December is currently the most expensive (average of £1,269). 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 £773 and £1,227 in October.
The cheapest return price found within the last 5 days was £603 on Multiple Airlines (29 Oct–12 Nov).

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
13,012 reviews
Check prices

Comfort

7.8

Entertainment

7.0

Crew

8.5

Boarding

8.1

Food

7.0

Overall

7.9

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
13,012 reviews
Alaska Airlines
7.9
Good
13,012 reviews
Check prices

Comfort

7.8

Entertainment

7.0

Crew

8.5

Boarding

8.1

Food

7.0

Overall

7.9

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.
Virgin Atlantic
7.4
Good
694 reviews
Alaska Airlines
7.9
Good
13,012 reviews
Check prices

Comfort

7.8

Entertainment

7.0

Crew

8.5

Boarding

8.1

Food

7.0

Overall

7.9

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
6.9
Okay
756 reviews
Alaska Airlines
7.9
Good
13,012 reviews
Check prices

Comfort

7.8

Entertainment

7.0

Crew

8.5

Boarding

8.1

Food

7.0

Overall

7.9

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
606 reviews
Alaska Airlines
7.9
Good
13,012 reviews
Check prices

Comfort

7.8

Entertainment

7.0

Crew

8.5

Boarding

8.1

Food

7.0

Overall

7.9

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
8,244 reviews
Alaska Airlines
7.9
Good
13,012 reviews
Check prices

Comfort

7.8

Entertainment

7.0

Crew

8.5

Boarding

8.1

Food

7.0

Overall

7.9

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 19h 31m. Fly via Alaska Airlines or Icelandair to get the fastest option. London and Alaska are separated by a distance of 4495 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 City - Anchorage. You may also consider London Gatwick - Anchorage or London Heathrow - 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 £735). Flying from London to Alaska in December is currently the most expensive (average of £1,269). 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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Top 3 airlines flying from London to Alaska

AirlineCheapestAverageFlexibilityOn-time
CondorCheapest£631Average£1,053FlexibilityNo cancel feeOn-time76%
Search Condor flights
IcelandairCheapest£639Average£866FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Alaska AirlinesCheapest£842Average£1,102FlexibilityNo 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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