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Cheap flights from London to Alaska from £511

LON — ANC
9 Dec — 16 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

Wed 2/1206:40 -
3 stops26h 57m
Tue 8/1201:42 -
3 stops29h 18m
Deal found 4/11£736
Tue 1/1220:35 -
2 stops47h 36m
Mon 7/1202:26 -
2 stops23h 24m
Deal found 6/11£781
Thu 26/1112:15 -
2 stops22h 34m
Tue 8/1202:26 -
2 stops32h 04m
Deal found 4/11£787
Thu 10/1214:45 -
1 stop16h 32m
Thu 24/1209:12 -
1 stop18h 08m
Deal found 6/11£809
Mon 23/1112:15 -
2 stops21h 34m
Thu 26/1102:52 -
2 stops31h 38m
Deal found 7/11£821
Fri 4/1220:35 -
2 stops34h 20m
Tue 8/1207:00 -
2 stops18h 50m
Deal found 6/11£847
Fri 20/1112:15 -
2 stops21h 34m
Fri 4/1206:00 -
2 stops19h 50m
Deal found 4/11£856
Thu 24/1211:55 -
2 stops20h 16m
Thu 31/1205:45 -
2 stops20h 10m
Deal found 9/11£859
Sun 27/1211:20 -
2 stops21h 18m
Tue 5/109:15 -
2 stops36h 50m
Deal found 7/11£868
Thu 10/1212:15 -
2 stops21h 36m
Thu 24/1213:00 -
2 stops36h 50m
Deal found 6/11£871
Sat 21/1112:15 -
2 stops31h 48m
Mon 7/1217:18 -
2 stops41h 12m
Deal found 7/11£872
Sun 13/1212:20 -
1 stop17h 31m
Sat 26/1202:50 -
1 stop22h 50m
Deal found 5/11£891

Find flight deals from London to Alaska

Round-trip from

£703

One-way from

£511

Popular in

December

Cheapest in

May
4/12-7/12
  • 4/12-7/12
  • 6 total stops
  • 57h 55m total
  • London to Alaska
Search Deals
4/3-31/12
  • 4/3-31/12
  • 3 total stops
  • 37h 29m total
  • London to Alaska
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£45 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£22 potential savings vs. average return price).
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

16:10-20:39

3 stops37h 29m

Anchorage

Wed 31/12

00:00-11:00

Nonstop0h 00m

£511

LondonFairbanks

LGW London Gatwick - FAI Fairbanks

LGWFAI

London Gatwick

Fri 26/2

14:25-00:27

3 stops43h 02m

Fairbanks

Wed 31/12

00:00-11:00

Nonstop0h 00m

£602

LondonFairbanks

LHR London Heathrow - FAI Fairbanks

LHRFAI

London Heathrow

Wed 18/11

18:30-00:50

3 stops39h 20m

Fairbanks

Wed 31/12

00:00-11:00

Nonstop0h 00m

£666

LondonJuneau

LGW London Gatwick - JNU Juneau Intl

LGWJNU

London Gatwick

Mon 14/12

16:35-13:19

3 stops53h 44m

Juneau Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£694

LondonJuneau

LGW London Gatwick - JNU Juneau Intl

LGWJNU

London Gatwick

Tue 15/12

10:30-13:19

3 stops35h 49m

Juneau Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£735

LondonFairbanks

LHR London Heathrow - FAI Fairbanks

LHRFAI

London Heathrow

Wed 2/12

06:40-00:37

3 stops26h 57m

Fairbanks

Tue 8/12

01:42-16:00

3 stops29h 18m

£736

LondonJuneau

LHR London Heathrow - JNU Juneau Intl

LHRJNU

London Heathrow

Tue 15/12

06:00-13:19

3 stops40h 19m

Juneau Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£738

LondonJuneau

LGW London Gatwick - JNU Juneau Intl

LGWJNU

London Gatwick

Wed 23/12

17:00-21:35

3 stops37h 35m

Juneau Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£762

LondonAnchorage

LGW London Gatwick - ANC Anchorage

LGWANC

London Gatwick

Mon 11/1

10:25-23:27

2 stops22h 02m

Anchorage

Thu 14/1

08:00-19:25

2 stops26h 25m

£763

LondonAnchorage

LGW London Gatwick - ANC Anchorage

LGWANC

London Gatwick

Thu 4/2

10:25-22:27

2 stops21h 02m

Anchorage

Sun 14/2

05:00-19:25

2 stops29h 25m

£764

Flights are sorted by cheapest return flights first.

Deals found on 6/11

Showing 1-10 of 48 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 £767). Flying from London to Alaska in December is currently the most expensive (average of £1,263). 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.

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
13,159 reviews
Check prices

Entertainment

7.0

Food

7.0

Comfort

7.8

Boarding

8.1

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
13,159 reviews
Alaska Airlines
7.9
Good
13,159 reviews
Check prices

Entertainment

7.0

Food

7.0

Comfort

7.8

Boarding

8.1

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
767 reviews
Alaska Airlines
7.9
Good
13,159 reviews
Check prices

Entertainment

7.0

Food

7.0

Comfort

7.8

Boarding

8.1

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
6.7
Okay
626 reviews
Alaska Airlines
7.9
Good
13,159 reviews
Check prices

Entertainment

7.0

Food

7.0

Comfort

7.8

Boarding

8.1

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
8,286 reviews
Alaska Airlines
7.9
Good
13,159 reviews
Check prices

Entertainment

7.0

Food

7.0

Comfort

7.8

Boarding

8.1

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 17h 36m. Fly via Icelandair or Alaska Airlines 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 Heathrow - Fairbanks.

  • 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 £767). Flying from London to Alaska in December is currently the most expensive (average of £1,263). 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 2 airlines flying from London to Alaska

AirlineCheapestAverageFlexibilityOn-time
CondorCheapest£626Average£1,044FlexibilityNo cancel feeOn-time76%
Search Condor flights
Alaska AirlinesCheapest£845Average£1,092FlexibilityNo 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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