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Cheap flights from London to Alaska from £498

LON — ANC
29 Nov — 6 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

Thu 24/1212:20 -
1 stop17h 20m
Tue 29/1205:45 -
1 stop19h 55m
Deal found 30/10£748
Fri 11/1214:45 -
1 stop16h 32m
Fri 25/1211:11 -
1 stop16h 09m
Deal found 28/10£750
Thu 26/1112:20 -
1 stop17h 37m
Thu 3/1206:00 -
1 stop19h 40m
Deal found 27/10£796
Wed 2/1212:15 -
2 stops31h 56m
Tue 8/1202:56 -
2 stops31h 34m
Deal found 25/10£803
Mon 23/1110:25 -
2 stops22h 17m
Mon 30/1110:19 -
2 stops24h 06m
Deal found 26/10£806
Fri 25/1212:15 -
2 stops22h 15m
Thu 14/102:28 -
2 stops23h 22m
Deal found 26/10£812
Wed 4/1120:35 -
2 stops34h 10m
Sun 15/1108:00 -
2 stops17h 50m
Deal found 26/10£824
Wed 4/1111:55 -
2 stops21h 37m
Sun 15/1108:00 -
2 stops17h 55m
Deal found 26/10£830
Thu 26/1110:25 -
2 stops24h 24m
Thu 3/1206:00 -
2 stops24h 00m
Deal found 27/10£839
Tue 24/1120:35 -
2 stops39h 19m
Tue 1/1207:00 -
2 stops27h 30m
Deal found 27/10£842
Mon 23/1120:35 -
2 stops37h 20m
Mon 30/1109:00 -
2 stops16h 50m
Deal found 26/10£856
Sun 22/1112:15 -
2 stops21h 34m
Sat 28/1102:52 -
2 stops22h 58m
Deal found 25/10£860

Find flight deals from London to Alaska

Round-trip from

£679

One-way from

£498

Popular in

November

Cheapest in

January

Average price

£905
1/2-9/2
  • 1/2-9/2
  • 4 total stops
  • 42h 29m total
  • London to Alaska
Search Deals
4/3-31/12
  • 4/3-31/12
  • 3 total stops
  • 45h 54m total
  • London to Alaska
Search Deals
Highest demand for flights based on searches. 20% potential increase in price (£192 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

Sun 25/4

15:40-02:11

2 stops19h 31m

Anchorage

Wed 31/12

00:00-11:00

Nonstop0h 00m

£562

LondonAnchorage

LHR London Heathrow - ANC Anchorage

LHRANC

London Heathrow

Fri 5/3

12:20-20:39

1 stop17h 19m

Anchorage

Wed 31/12

00:00-11:00

Nonstop0h 00m

£616

LondonKetchikan

LHR London Heathrow - KTN Ketchikan

LHRKTN

London Heathrow

Mon 22/3

14:45-08:05

1 stop25h 20m

Ketchikan

Wed 31/12

00:00-09:00

Nonstop0h 00m

£696

LondonKetchikan

LHR London Heathrow - KTN Ketchikan

LHRKTN

London Heathrow

Wed 24/3

14:45-08:05

1 stop25h 20m

Ketchikan

Wed 31/12

00:00-09:00

Nonstop0h 00m

£696

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

£702

LondonAnchorage

LGW London Gatwick - ANC Anchorage

LGWANC

London Gatwick

Thu 25/3

10:25-22:40

2 stops20h 15m

Anchorage

Sun 4/4

09:00-19:10

2 stops25h 10m

£739

LondonFairbanks

LHR London Heathrow - FAI Fairbanks

LHRFAI

London Heathrow

Tue 13/4

13:05-02:38

2 stops22h 33m

Fairbanks

Tue 27/4

05:50-20:20

2 stops29h 30m

£792

LondonKetchikan

LHR London Heathrow - KTN Ketchikan

LHRKTN

London Heathrow

Sat 20/3

14:45-11:59

3 stops29h 14m

Ketchikan

Wed 31/12

00:00-09:00

Nonstop0h 00m

£839

LondonAnchorage

LGW London Gatwick - ANC Anchorage

LGWANC

London Gatwick

Thu 26/11

10:25-01:49

2 stops24h 24m

Anchorage

Thu 3/12

06:00-15:00

2 stops24h 00m

£839

LondonFairbanks

LHR London Heathrow - FAI Fairbanks

LHRFAI

London Heathrow

Tue 24/11

20:35-02:54

2 stops39h 19m

Fairbanks

Tue 1/12

07:00-19:30

2 stops27h 30m

£842

Flights are sorted by cheapest return flights first.

Deals found on 30/10

Showing 1-10 of 39 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 £730). Flying from London to Alaska in December is currently the most expensive (average of £1,264). 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
13,134 reviews
Check prices

Boarding

8.1

Food

7.0

Entertainment

7.0

Comfort

7.8

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
13,134 reviews
Alaska Airlines
7.9
Good
13,134 reviews
Check prices

Boarding

8.1

Food

7.0

Entertainment

7.0

Comfort

7.8

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
764 reviews
Alaska Airlines
7.9
Good
13,134 reviews
Check prices

Boarding

8.1

Food

7.0

Entertainment

7.0

Comfort

7.8

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
625 reviews
Alaska Airlines
7.9
Good
13,134 reviews
Check prices

Boarding

8.1

Food

7.0

Entertainment

7.0

Comfort

7.8

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
8,275 reviews
Alaska Airlines
7.9
Good
13,134 reviews
Check prices

Boarding

8.1

Food

7.0

Entertainment

7.0

Comfort

7.8

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, Alaska Airlines, or Delta 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 £730). Flying from London to Alaska in December is currently the most expensive (average of £1,264). 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£627Average£1,045FlexibilityNo cancel feeOn-time76%
Search Condor flights
Alaska AirlinesCheapest£846Average£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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