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Cheap flights from London to Alaska from £417

LON — ANC
2 Oct — 9 Oct1
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

Fri 9/1010:20 -
2 stops47h 15m
Sun 11/1006:30 -
2 stops30h 10m
Deal found 30/8£584
Thu 1/1019:30 -
2 stops33h 45m
Sun 11/1006:30 -
2 stops30h 10m
Deal found 31/8£590
Fri 2/1006:40 -
3 stops26h 47m
Sat 10/1001:40 -
3 stops29h 20m
Deal found 28/8£593
Tue 22/906:40 -
3 stops26h 47m
Fri 25/906:12 -
3 stops27h 18m
Deal found 28/8£598
Thu 24/911:40 -
1 stop18h 15m
Wed 30/901:28 -
1 stop24h 52m
Deal found 27/8£725
Tue 27/1007:30 -
3 stops37h 23m
Tue 3/1105:30 -
3 stops26h 20m
Deal found 29/8£729
Mon 12/1011:40 -
1 stop19h 08m
Mon 19/1010:22 -
1 stop15h 58m
Deal found 28/8£745
Sun 11/1011:40 -
1 stop22h 57m
Sun 18/1008:08 -
2 stops18h 12m
Deal found 27/8£754
Mon 12/1011:40 -
1 stop22h 57m
Mon 19/1005:36 -
1 stop24h 59m
Deal found 27/8£769
Wed 28/1012:20 -
1 stop17h 16m
Wed 4/1105:30 -
2 stops21h 10m
Deal found 29/8£780
Tue 27/1012:20 -
1 stop17h 16m
Wed 4/1105:30 -
1 stop20h 10m
Deal found 29/8£791
Fri 9/1010:20 -
2 stops19h 31m
Sun 11/1008:02 -
2 stops25h 48m
Deal found 30/8£848

Find flight deals from London to Alaska

Round-trip from

£584

One-way from

£417

Popular in

December

Cheapest in

January

Average price

£1,019
Scandinavian Airlines
  • Scandinavian Airlines
  • 9/10-11/10
  • 4 total stops
  • 77h 25m total
  • London to Alaska
Search Deals
5/11
  • 5/11
  • 2 total stops
  • 22h 32m total
  • London to Alaska
Search Deals
High demand for flights, 3% 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 September 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

LHR London Heathrow - ANC Anchorage

LHRANC

London Heathrow

Fri 2/10

06:40-00:27

3 stops26h 47m

Anchorage

Sat 10/10

01:40-16:00

3 stops29h 20m

£593

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

£621

LondonFairbanks

LHR London Heathrow - FAI Fairbanks

LHRFAI

London Heathrow

Sun 11/10

11:40-01:37

1 stop22h 57m

Fairbanks

Sun 18/10

08:08-11:20

2 stops18h 12m

£754

LondonFairbanks

LHR London Heathrow - FAI Fairbanks

LHRFAI

London Heathrow

Mon 12/10

11:40-01:37

1 stop22h 57m

Fairbanks

Mon 19/10

05:36-15:35

1 stop24h 59m

£769

LondonFairbanks

LHR London Heathrow - FAI Fairbanks

LHRFAI

London Heathrow

Thu 24/9

11:45-22:46

2 stops20h 01m

Fairbanks

Thu 1/10

05:30-11:20

1 stop20h 50m

£770
Fastest return journey

LondonAnchorage

LHR London Heathrow - ANC Anchorage

LHRANC

London Heathrow

Thu 1/10

11:45-21:39

2 stops18h 54m

Anchorage

Sun 11/10

10:22-11:20

1 stop15h 58m

£774

LondonFairbanks

LHR London Heathrow - FAI Fairbanks

LHRFAI

London Heathrow

Sun 7/2

20:35-21:54

2 stops34h 19m

Fairbanks

Sun 14/2

05:50-10:50

2 stops20h 00m

£808

LondonFairbanks

LHR London Heathrow - FAI Fairbanks

LHRFAI

London Heathrow

Tue 29/9

11:40-20:55

1 stop18h 15m

Fairbanks

Tue 6/10

08:01-15:35

2 stops22h 34m

£840

LondonAnchorage

LGW London Gatwick - ANC Anchorage

LGWANC

London Gatwick

Fri 9/10

10:20-20:51

2 stops19h 31m

Anchorage

Sun 11/10

08:02-18:50

2 stops25h 48m

£848

LondonFairbanks

LHR London Heathrow - FAI Fairbanks

LHRFAI

London Heathrow

Thu 14/1

14:45-01:35

1 stop19h 50m

Fairbanks

Sat 23/1

08:00-12:20

1 stop19h 20m

£866

Flights are sorted by cheapest return flights first.

Deals found on 28/8

Showing 1-10 of 60 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 £720). Flying from London to Alaska in December is currently the most expensive (average of £1,184). 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 £686 and £1,227 in October.
The cheapest return price found within the last 5 days was £584 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
12,865 reviews
Check prices

Comfort

7.8

Crew

8.5

Entertainment

7.0

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
12,865 reviews
Alaska Airlines
7.9
Good
12,865 reviews
Check prices

Comfort

7.8

Crew

8.5

Entertainment

7.0

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
695 reviews
Alaska Airlines
7.9
Good
12,865 reviews
Check prices

Comfort

7.8

Crew

8.5

Entertainment

7.0

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
738 reviews
Alaska Airlines
7.9
Good
12,865 reviews
Check prices

Comfort

7.8

Crew

8.5

Entertainment

7.0

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
8,196 reviews
Alaska Airlines
7.9
Good
12,865 reviews
Check prices

Comfort

7.8

Crew

8.5

Entertainment

7.0

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
6.6
Okay
573 reviews
Alaska Airlines
7.9
Good
12,865 reviews
Check prices

Comfort

7.8

Crew

8.5

Entertainment

7.0

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 24h 25m. Fly via Scandinavian Airlines, Condor, or Delta to get the fastest option. London and Alaska are separated by a distance of 4237 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 Heathrow - Fairbanks 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 £720). Flying from London to Alaska in December is currently the most expensive (average of £1,184). 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 4 airlines flying from London to Alaska

AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest£582Average£691FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
CondorCheapest£618Average£1,030FlexibilityNo cancel feeOn-time76%
Search Condor flights
IcelandairCheapest£626Average£847FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Alaska AirlinesCheapest£824Average£1,078FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights

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

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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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