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Cheap flights from London to Alaska from £450

LON — ANC
18 Nov — 25 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

Mon 23/1110:25 -
2 stops22h 17m
Sun 29/1106:00 -
2 stops28h 25m
Deal found 15/10£730
Thu 26/1112:20 -
1 stop17h 37m
Tue 8/1202:56 -
1 stop22h 44m
Deal found 16/10£762
Thu 3/1212:20 -
1 stop21h 31m
Thu 10/1206:00 -
1 stop19h 40m
Deal found 19/10£765
Fri 20/1114:45 -
1 stop17h 57m
Fri 27/1106:00 -
1 stop21h 20m
Deal found 15/10£786
Thu 24/1212:15 -
2 stops18h 23m
Fri 8/109:00 -
2 stops16h 50m
Deal found 18/10£798
Wed 11/1112:15 -
2 stops18h 22m
Wed 18/1107:04 -
2 stops27h 26m
Deal found 14/10£798
Thu 3/1214:45 -
1 stop16h 10m
Thu 10/1205:45 -
1 stop21h 35m
Deal found 19/10£798
Tue 1/1220:35 -
2 stops36h 46m
Tue 8/1207:00 -
2 stops27h 30m
Deal found 17/10£808
Wed 2/1220:35 -
2 stops37h 16m
Tue 8/1202:56 -
2 stops31h 34m
Deal found 18/10£810
Mon 23/1120:35 -
2 stops34h 24m
Sun 29/1106:00 -
2 stops19h 50m
Deal found 15/10£814
Mon 16/1110:25 -
2 stops20h 12m
Sun 22/1105:45 -
2 stops24h 15m
Deal found 17/10£818
Sat 21/1112:15 -
2 stops20h 27m
Sat 5/1208:05 -
2 stops26h 25m
Deal found 18/10£818

Find flight deals from London to Alaska

Round-trip from

£683

One-way from

£450

Popular in

December

Cheapest in

January

Average price

£906
16/4-20/4
  • 16/4-20/4
  • 4 total stops
  • 53h 28m total
  • London to Alaska
Search Deals
19/11-31/12
  • 19/11-31/12
  • 2 total stops
  • 35h 31m total
  • London to Alaska
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£78 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 19/11

11:00-13:31

2 stops35h 31m

Anchorage

Wed 31/12

00:00-11:00

Nonstop0h 00m

£450

LondonAnchorage

LHR London Heathrow - ANC Anchorage

LHRANC

London Heathrow

Thu 19/11

14:50-05:10

2 stops23h 20m

Anchorage

Wed 31/12

00:00-11:00

Nonstop0h 00m

£530

LondonKetchikan

LHR London Heathrow - KTN Ketchikan

LHRKTN

London Heathrow

Fri 25/12

12:15-08:12

2 stops28h 57m

Ketchikan

Wed 31/12

00:00-09:00

Nonstop0h 00m

£593

LondonAnchorage

LGW London Gatwick - ANC Anchorage

LGWANC

London Gatwick

Mon 29/3

20:40-22:40

3 stops35h 00m

Anchorage

Wed 31/12

00:00-11:00

Nonstop0h 00m

£599

LondonJuneau

LHR London Heathrow - JNU Juneau Intl

LHRJNU

London Heathrow

Fri 25/12

14:45-20:02

3 stops38h 17m

Juneau Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£612

LondonAnchorage

LGW London Gatwick - ANC Anchorage

LGWANC

London Gatwick

Sat 27/3

22:30-22:40

3 stops32h 10m

Anchorage

Wed 31/12

00:00-11:00

Nonstop0h 00m

£623

LondonAnchorage

LGW London Gatwick - ANC Anchorage

LGWANC

London Gatwick

Fri 26/3

13:00-20:39

3 stops39h 39m

Anchorage

Wed 31/12

00:00-11:00

Nonstop0h 00m

£673

LondonFairbanks

LGW London Gatwick - FAI Fairbanks

LGWFAI

London Gatwick

Fri 16/4

10:30-02:38

2 stops25h 08m

Fairbanks

Tue 20/4

05:50-19:10

2 stops28h 20m

£683

LondonAnchorage

LHR London Heathrow - ANC Anchorage

LHRANC

London Heathrow

Sat 13/2

14:45-00:10

1 stop18h 25m

Anchorage

Wed 31/12

00:00-11:00

Nonstop0h 00m

£686

LondonAnchorage

LGW London Gatwick - ANC Anchorage

LGWANC

London Gatwick

Sun 28/3

06:25-22:40

2 stops25h 15m

Anchorage

Wed 31/12

00:00-11:00

Nonstop0h 00m

£689

Flights are sorted by cheapest return flights first.

Deals found on 19/10

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 £731). Flying from London to Alaska in December is currently the most expensive (average of £1,265). 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 £768 and £983 in November.
The cheapest return price found within the last 5 days was £730 on Multiple Airlines (23 Nov–29 Nov).

Reviews of airlines servicing Alaska

See what other customers who have flown with Alaska Airlines,Icelandair, andBritish Airways 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
13,086 reviews
Check prices

Comfort

7.8

Boarding

8.1

Entertainment

7.0

Food

7.0

Overall

7.9

Crew

8.5

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
13,086 reviews
Alaska Airlines
7.9
Good
13,086 reviews
Check prices

Comfort

7.8

Boarding

8.1

Entertainment

7.0

Food

7.0

Overall

7.9

Crew

8.5

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
761 reviews
Alaska Airlines
7.9
Good
13,086 reviews
Check prices

Comfort

7.8

Boarding

8.1

Entertainment

7.0

Food

7.0

Overall

7.9

Crew

8.5

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
8,265 reviews
Alaska Airlines
7.9
Good
13,086 reviews
Check prices

Comfort

7.8

Boarding

8.1

Entertainment

7.0

Food

7.0

Overall

7.9

Crew

8.5

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
620 reviews
Alaska Airlines
7.9
Good
13,086 reviews
Check prices

Comfort

7.8

Boarding

8.1

Entertainment

7.0

Food

7.0

Overall

7.9

Crew

8.5

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 15h 53m. Fly via Icelandair, Alaska Airlines, or Condor 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 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 £731). Flying from London to Alaska in December is currently the most expensive (average of £1,265). 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£627Average£1,046FlexibilityNo cancel feeOn-time76%
Search Condor flights
Alaska AirlinesCheapest£837Average£1,094FlexibilityNo 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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