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Cheap flights from London to Alaska from £450

LON — ANC
17 Oct — 24 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

Wed 21/1010:55 -
2 stops19h 53m
Thu 12/1114:23 -
2 stops20h 47m
Deal found 16/9£651
Thu 15/1009:55 -
2 stops20h 53m
Fri 30/1006:02 -
2 stops19h 58m
Deal found 16/9£661
Thu 15/1017:00 -
1 stop16h 48m
Thu 29/1001:59 -
1 stop26h 21m
Deal found 16/9£673
Tue 22/906:40 -
3 stops26h 47m
Fri 25/906:12 -
3 stops25h 13m
Deal found 12/9£680
Wed 21/1017:00 -
1 stop16h 48m
Thu 12/1112:04 -
1 stop15h 16m
Deal found 16/9£696
Wed 14/1006:40 -
3 stops27h 05m
Tue 20/1001:50 -
3 stops29h 10m
Deal found 16/9£727
Thu 22/1017:45 -
1 stop16h 52m
Mon 26/1005:36 -
1 stop21h 04m
Deal found 16/9£735
Sun 8/1112:20 -
1 stop18h 25m
Sat 21/1102:52 -
1 stop22h 48m
Deal found 15/9£749
Thu 5/1110:25 -
2 stops24h 25m
Thu 21/108:00 -
2 stops26h 25m
Deal found 16/9£788
Thu 12/1120:35 -
2 stops34h 10m
Thu 26/1107:35 -
2 stops18h 15m
Deal found 16/9£802
Thu 29/1012:15 -
2 stops20h 33m
Thu 5/1117:28 -
2 stops41h 02m
Deal found 14/9£805
Thu 5/1114:45 -
1 stop20h 05m
Thu 21/108:00 -
1 stop19h 20m
Deal found 16/9£817

Find flight deals from London to Alaska

Round-trip from

£651

One-way from

£450

Popular in

December

Cheapest in

January

Average price

£1,025
21/10-12/11
  • 21/10-12/11
  • 4 total stops
  • 40h 40m total
  • London to Alaska
Search Deals
30/10-31/12
  • 30/10-31/12
  • 3 total stops
  • 28h 31m total
  • London to Alaska
Search Deals
High demand for flights, 4% 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 30/10

14:50-23:59

2 stops41h 09m

Anchorage

Wed 31/12

00:00-11:00

Nonstop0h 00m

£514

LondonAnchorage

LGW London Gatwick - ANC Anchorage

LGWANC

London Gatwick

Sat 3/10

09:40-23:39

2 stops22h 59m

Anchorage

Wed 31/12

00:00-11:00

Nonstop0h 00m

£519

LondonAnchorage

LGW London Gatwick - ANC Anchorage

LGWANC

London Gatwick

Fri 30/10

09:00-13:37

3 stops36h 37m

Anchorage

Wed 31/12

00:00-11:00

Nonstop0h 00m

£580

LondonAnchorage

LGW London Gatwick - ANC Anchorage

LGWANC

London Gatwick

Mon 12/10

14:00-00:48

2 stops43h 48m

Anchorage

Wed 31/12

00:00-11:00

Nonstop0h 00m

£584

LondonFairbanks

LGW London Gatwick - FAI Fairbanks

LGWFAI

London Gatwick

Thu 22/10

11:05-15:08

3 stops37h 03m

Fairbanks

Wed 31/12

00:00-11:00

Nonstop0h 00m

£614

LondonAnchorage

LCY London City - ANC Anchorage

LCYANC

London City

Fri 30/10

09:50-12:57

3 stops59h 07m

Anchorage

Wed 31/12

00:00-11:00

Nonstop0h 00m

£660

LondonAnchorage

LHR London Heathrow - ANC Anchorage

LHRANC

London Heathrow

Sat 3/10

15:30-11:50

3 stops53h 20m

Anchorage

Wed 31/12

00:00-11:00

Nonstop0h 00m

£693

LondonFairbanks

LHR London Heathrow - FAI Fairbanks

LHRFAI

London Heathrow

Wed 14/10

06:40-00:45

3 stops27h 05m

Fairbanks

Tue 20/10

01:50-16:00

3 stops29h 10m

£727

LondonAnchorage

LCY London City - ANC Anchorage

LCYANC

London City

Mon 12/10

19:15-00:48

3 stops38h 33m

Anchorage

Wed 31/12

00:00-11:00

Nonstop0h 00m

£735

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

£748

Flights are sorted by cheapest return flights first.

Deals found on 12/9

Showing 1-10 of 50 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 £724). Flying from London to Alaska in December is currently the most expensive (average of £1,191). 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 £691 and £1,235 in October.
The cheapest return price found within the last 5 days was £651 on Multiple Airlines (21 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
12,930 reviews
Check prices

Food

7.0

Comfort

7.8

Overall

7.9

Boarding

8.1

Crew

8.5

Entertainment

7.0

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
12,930 reviews
Alaska Airlines
7.9
Good
12,930 reviews
Check prices

Food

7.0

Comfort

7.8

Overall

7.9

Boarding

8.1

Crew

8.5

Entertainment

7.0

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
12,930 reviews
Check prices

Food

7.0

Comfort

7.8

Overall

7.9

Boarding

8.1

Crew

8.5

Entertainment

7.0

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
744 reviews
Alaska Airlines
7.9
Good
12,930 reviews
Check prices

Food

7.0

Comfort

7.8

Overall

7.9

Boarding

8.1

Crew

8.5

Entertainment

7.0

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
8,227 reviews
Alaska Airlines
7.9
Good
12,930 reviews
Check prices

Food

7.0

Comfort

7.8

Overall

7.9

Boarding

8.1

Crew

8.5

Entertainment

7.0

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
588 reviews
Alaska Airlines
7.9
Good
12,930 reviews
Check prices

Food

7.0

Comfort

7.8

Overall

7.9

Boarding

8.1

Crew

8.5

Entertainment

7.0

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 05m. Fly via Scandinavian Airlines, Alaska Airlines, or Condor 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 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 £724). Flying from London to Alaska in December is currently the most expensive (average of £1,191). 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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London City to Boston flights

Top 3 airlines flying from London to Alaska

AirlineCheapestAverageFlexibilityOn-time
CondorCheapest£622Average£1,037FlexibilityNo cancel feeOn-time76%
Search Condor flights
IcelandairCheapest£630Average£852FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Alaska AirlinesCheapest£830Average£1,085FlexibilityNo 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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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!

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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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