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Cheap flights from London to Alaska from £449

LON — ANC
20 Nov — 27 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

Fri 20/1114:45 -
1 stop16h 14m
Fri 27/1118:47 -
1 stop32h 33m
Deal found 21/10£731
Sat 5/1214:45 -
1 stop17h 36m
Tue 8/1206:00 -
1 stop21h 20m
Deal found 21/10£737
Sat 5/1212:20 -
1 stop17h 58m
Tue 8/1216:18 -
2 stops18h 52m
Deal found 21/10£755
Thu 26/1112:20 -
1 stop17h 37m
Tue 8/1202:56 -
1 stop22h 44m
Deal found 16/10£761
Thu 3/1212:20 -
1 stop21h 31m
Thu 10/1206:00 -
1 stop19h 40m
Deal found 19/10£764
Sat 5/1212:15 -
2 stops18h 03m
Tue 8/1208:05 -
2 stops17h 45m
Deal found 21/10£768
Fri 4/1212:20 -
1 stop17h 31m
Thu 10/1201:41 -
2 stops20h 24m
Deal found 20/10£772
Thu 19/1112:15 -
2 stops18h 30m
Wed 25/1101:27 -
2 stops33h 03m
Deal found 20/10£785
Thu 19/1112:15 -
2 stops18h 30m
Thu 26/1107:35 -
2 stops26h 55m
Deal found 19/10£787
Thu 24/1212:15 -
2 stops18h 23m
Fri 8/109:00 -
2 stops16h 50m
Deal found 18/10£797
Thu 3/1214:45 -
1 stop16h 10m
Thu 10/1205:45 -
1 stop21h 35m
Deal found 19/10£797
Thu 19/1110:25 -
2 stops19h 23m
Thu 26/1106:00 -
2 stops24h 00m
Deal found 19/10£801

Find flight deals from London to Alaska

Round-trip from

£682

One-way from

£449

Popular in

December

Cheapest in

January

Average price

£904
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

£449

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

£529
Fastest return journey

LondonJuneau

LHR London Heathrow - JNU Juneau Intl

LHRJNU

London Heathrow

Fri 25/12

12:15-21:35

2 stops18h 20m

Juneau Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£549

LondonAnchorage

LGW London Gatwick - ANC Anchorage

LGWANC

London Gatwick

Wed 28/10

09:50-10:34

2 stops32h 44m

Anchorage

Wed 31/12

00:00-11:00

Nonstop0h 00m

£570

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

£592

LondonAnchorage

LGW London Gatwick - ANC Anchorage

LGWANC

London Gatwick

Fri 30/10

12:35-17:27

3 stops36h 52m

Anchorage

Wed 31/12

00:00-11:00

Nonstop0h 00m

£592

LondonJuneau

LHR London Heathrow - JNU Juneau Intl

LHRJNU

London Heathrow

Fri 25/12

14:45-00:34

1 stop18h 49m

Juneau Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£616

LondonAnchorage

LGW London Gatwick - ANC Anchorage

LGWANC

London Gatwick

Tue 29/12

21:10-05:34

3 stops41h 24m

Anchorage

Wed 31/12

00:00-11:00

Nonstop0h 00m

£638

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

£682

LondonSitka

LHR London Heathrow - SIT Sitka

LHRSIT

London Heathrow

Thu 11/2

14:45-10:06

2 stops28h 21m

Sitka

Wed 31/12

00:00-09:00

Nonstop0h 00m

£695

Flights are sorted by cheapest return flights first.

Deals found on 19/10

Showing 1-10 of 51 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 £729). 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.

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 £891 and £1,301 in November.
The cheapest return price found within the last 5 days was £731 on Alaska Airlines (20 Nov–27 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
13,100 reviews
Check prices

Comfort

7.8

Crew

8.5

Overall

7.9

Boarding

8.1

Entertainment

7.0

Food

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
13,100 reviews
Alaska Airlines
7.9
Good
13,100 reviews
Check prices

Comfort

7.8

Crew

8.5

Overall

7.9

Boarding

8.1

Entertainment

7.0

Food

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
762 reviews
Alaska Airlines
7.9
Good
13,100 reviews
Check prices

Comfort

7.8

Crew

8.5

Overall

7.9

Boarding

8.1

Entertainment

7.0

Food

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
8,266 reviews
Alaska Airlines
7.9
Good
13,100 reviews
Check prices

Comfort

7.8

Crew

8.5

Overall

7.9

Boarding

8.1

Entertainment

7.0

Food

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
621 reviews
Alaska Airlines
7.9
Good
13,100 reviews
Check prices

Comfort

7.8

Crew

8.5

Overall

7.9

Boarding

8.1

Entertainment

7.0

Food

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 30m. 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 £729). 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

Alternative routes for London to Alaska

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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£835Average£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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