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Cheap flights from London to Alaska from £551

LON — ANC
25 Nov — 2 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

Fri 20/1114:45 -
1 stop16h 14m
Fri 27/1118:47 -
1 stop32h 33m
Deal found 21/10£729
Sun 6/1210:00 -
2 stops22h 21m
Sun 13/1207:05 -
2 stops23h 40m
Deal found 22/10£772
Wed 11/1112:15 -
2 stops18h 22m
Wed 18/1107:14 -
3 stops18h 36m
Deal found 22/10£787
Wed 11/1112:15 -
2 stops18h 22m
Wed 18/1107:04 -
2 stops18h 46m
Deal found 22/10£797
Wed 2/1212:15 -
2 stops31h 56m
Tue 8/1202:56 -
2 stops31h 34m
Deal found 25/10£800
Tue 8/1220:35 -
2 stops34h 42m
Mon 14/1201:37 -
2 stops24h 13m
Deal found 24/10£809
Mon 7/1212:20 -
1 stop18h 35m
Mon 14/1205:45 -
1 stop19h 55m
Deal found 23/10£813
Fri 20/1120:35 -
2 stops37h 20m
Thu 26/1102:52 -
2 stops31h 38m
Deal found 21/10£829
Fri 11/1209:50 -
2 stops21h 27m
Fri 25/1210:12 -
1 stop15h 28m
Deal found 23/10£831
Mon 7/1210:00 -
2 stops20h 55m
Mon 14/1205:45 -
2 stops25h 00m
Deal found 23/10£838
Wed 9/1212:15 -
2 stops19h 02m
Wed 23/1205:45 -
2 stops28h 45m
Deal found 21/10£847
Sat 21/1120:35 -
2 stops37h 14m
Sat 28/1107:35 -
2 stops26h 55m
Deal found 24/10£853

Find flight deals from London to Alaska

Round-trip from

£655

One-way from

£551

Popular in

November

Cheapest in

January

Average price

£903
1/2-15/2
  • 1/2-15/2
  • 4 total stops
  • 44h 41m total
  • London to Alaska
Search Deals
14/4-31/12
  • 14/4-31/12
  • 2 total stops
  • 41h 17m total
  • London to Alaska
Search Deals
Highest demand for flights based on searches. 20% potential increase in price (£191 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (£43 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

Wed 14/4

10:25-18:42

2 stops41h 17m

Anchorage

Wed 31/12

00:00-11:00

Nonstop0h 00m

£551

LondonFairbanks

LHR London Heathrow - FAI Fairbanks

LHRFAI

London Heathrow

Wed 23/12

18:30-02:48

3 stops41h 18m

Fairbanks

Wed 31/12

00:00-11:00

Nonstop0h 00m

£581

LondonFairbanks

LGW London Gatwick - FAI Fairbanks

LGWFAI

London Gatwick

Mon 21/12

09:40-23:11

3 stops46h 31m

Fairbanks

Wed 31/12

00:00-11:00

Nonstop0h 00m

£587

LondonFairbanks

LGW London Gatwick - FAI Fairbanks

LGWFAI

London Gatwick

Wed 23/12

16:35-02:48

3 stops43h 13m

Fairbanks

Wed 31/12

00:00-11:00

Nonstop0h 00m

£602

LondonFairbanks

LGW London Gatwick - FAI Fairbanks

LGWFAI

London Gatwick

Sun 20/12

08:25-23:11

3 stops47h 46m

Fairbanks

Wed 31/12

00:00-11:00

Nonstop0h 00m

£617

LondonAnchorage

LHR London Heathrow - ANC Anchorage

LHRANC

London Heathrow

Wed 14/4

14:10-00:49

2 stops43h 39m

Anchorage

Wed 31/12

00:00-11:00

Nonstop0h 00m

£652

LondonFairbanks

LHR London Heathrow - FAI Fairbanks

LHRFAI

London Heathrow

Mon 21/12

13:40-02:48

3 stops46h 08m

Fairbanks

Wed 31/12

00:00-11:00

Nonstop0h 00m

£681

LondonAnchorage

LHR London Heathrow - ANC Anchorage

LHRANC

London Heathrow

Sat 13/2

14:45-02:11

1 stop20h 26m

Anchorage

Wed 31/12

00:00-11:00

Nonstop0h 00m

£696

LondonFairbanks

LHR London Heathrow - FAI Fairbanks

LHRFAI

London Heathrow

Sun 1/11

21:35-15:09

3 stops50h 34m

Fairbanks

Wed 31/12

00:00-11:00

Nonstop0h 00m

£713

LondonFairbanks

LGW London Gatwick - FAI Fairbanks

LGWFAI

London Gatwick

Tue 22/12

08:00-07:33

3 stops32h 33m

Fairbanks

Wed 31/12

00:00-11:00

Nonstop0h 00m

£715

Flights are sorted by cheapest return flights first.

Deals found on 21/10

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 £728). Flying from London to Alaska in December is currently the most expensive (average of £1,261). 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 £889 and £1,298 in February.
The cheapest return price found within the last 5 days was £655 on Multiple Airlines (1 Feb–15 Feb).

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
13,122 reviews
Check prices

Food

7.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Overall

7.9

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
13,122 reviews
Alaska Airlines
7.9
Good
13,122 reviews
Check prices

Food

7.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Overall

7.9

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
7.0
Good
766 reviews
Alaska Airlines
7.9
Good
13,122 reviews
Check prices

Food

7.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Overall

7.9

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
6.7
Okay
623 reviews
Alaska Airlines
7.9
Good
13,122 reviews
Check prices

Food

7.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Overall

7.9

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
8,271 reviews
Alaska Airlines
7.9
Good
13,122 reviews
Check prices

Food

7.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Overall

7.9

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 18h 22m. Fly via Icelandair or Alaska Airlines to get the fastest option. London and Alaska are separated by a distance of 4418 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 £728). Flying from London to Alaska in December is currently the most expensive (average of £1,261). 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£625Average£1,042FlexibilityNo cancel feeOn-time76%
Search Condor flights
Alaska AirlinesCheapest£844Average£1,090FlexibilityNo 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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