Find flights
When to book
Airlines
FAQs

Cheap flights from London to Alaska from £405

LON — ANC
10 Oct — 17 Oct1
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 1/1019:30 -
2 stops33h 45m
Sat 10/1001:40 -
2 stops35h 00m
Deal found 6/9£597
Tue 6/1011:45 -
2 stops19h 03m
Tue 13/1007:05 -
1 stop19h 15m
Deal found 6/9£656
Thu 1/1011:45 -
2 stops18h 54m
Sun 11/1009:07 -
1 stop17h 13m
Deal found 5/9£671
Thu 22/1017:45 -
1 stop16h 52m
Thu 29/1005:36 -
1 stop21h 04m
Deal found 7/9£676
Mon 5/1017:45 -
1 stop16h 03m
Mon 19/1010:22 -
1 stop15h 58m
Deal found 7/9£697
Thu 22/1017:45 -
1 stop16h 03m
Thu 29/1010:22 -
1 stop16h 18m
Deal found 7/9£721
Thu 29/1011:55 -
2 stops18h 53m
Thu 12/1108:00 -
2 stops17h 55m
Deal found 9/9£746
Thu 29/1012:15 -
2 stops18h 33m
Thu 12/1108:00 -
2 stops17h 50m
Deal found 9/9£747
Tue 6/1017:45 -
1 stop16h 52m
Tue 13/1008:01 -
2 stops18h 19m
Deal found 6/9£793
Thu 22/1017:00 -
2 stops24h 46m
Thu 29/1005:36 -
1 stop22h 44m
Deal found 7/9£805
Sat 12/910:20 -
1 stop13h 30m
Sat 26/909:07 -
2 stops20h 33m
Deal found 10/9£838
Wed 14/1010:20 -
2 stops20h 28m
Tue 20/1009:07 -
2 stops24h 43m
Deal found 8/9£843

Find flight deals from London to Alaska

Round-trip from

£597

One-way from

£405

Popular in

December

Cheapest in

January

Average price

£1,018
Scandinavian Airlines
  • Scandinavian Airlines
  • 1/10-10/10
  • 4 total stops
  • 68h 45m total
  • London to Alaska
Search Deals
13/11-31/12
  • 13/11-31/12
  • 2 total stops
  • 31h 40m total
  • London to Alaska
Search Deals
High demand for flights, 4% potential price rise
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£22 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 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

LHR London Heathrow - ANC Anchorage

LHRANC

London Heathrow

Thu 12/11

14:50-13:30

2 stops31h 40m

Anchorage

Wed 31/12

00:00-11:00

Nonstop0h 00m

£473

LondonAnchorage

LGW London Gatwick - ANC Anchorage

LGWANC

London Gatwick

Sun 7/2

11:55-13:20

2 stops34h 25m

Anchorage

Wed 31/12

00:00-11:00

Nonstop0h 00m

£507

LondonAnchorage

LGW London Gatwick - ANC Anchorage

LGWANC

London Gatwick

Wed 7/10

12:40-13:36

3 stops33h 56m

Anchorage

Wed 31/12

00:00-11:00

Nonstop0h 00m

£511

LondonAnchorage

LGW London Gatwick - ANC Anchorage

LGWANC

London Gatwick

Sun 15/11

11:40-13:30

3 stops58h 50m

Anchorage

Wed 31/12

00:00-11:00

Nonstop0h 00m

£517

LondonAnchorage

LGW London Gatwick - ANC Anchorage

LGWANC

London Gatwick

Sun 20/9

14:00-19:38

2 stops38h 38m

Anchorage

Wed 31/12

00:00-11:00

Nonstop0h 00m

£519

LondonAnchorage

LGW London Gatwick - ANC Anchorage

LGWANC

London Gatwick

Fri 30/10

12:35-14:30

3 stops57h 55m

Anchorage

Wed 31/12

00:00-11:00

Nonstop0h 00m

£538

LondonAnchorage

LGW London Gatwick - ANC Anchorage

LGWANC

London Gatwick

Thu 12/11

11:40-23:45

2 stops21h 05m

Anchorage

Wed 31/12

00:00-11:00

Nonstop0h 00m

£545

LondonAnchorage

LGW London Gatwick - ANC Anchorage

LGWANC

London Gatwick

Fri 13/11

11:40-23:45

2 stops21h 05m

Anchorage

Wed 31/12

00:00-11:00

Nonstop0h 00m

£545

LondonAnchorage

LGW London Gatwick - ANC Anchorage

LGWANC

London Gatwick

Tue 17/11

11:40-23:45

2 stops21h 05m

Anchorage

Wed 31/12

00:00-11:00

Nonstop0h 00m

£545

LondonAnchorage

LHR London Heathrow - ANC Anchorage

LHRANC

London Heathrow

Sun 25/10

18:30-22:48

2 stops36h 18m

Anchorage

Wed 31/12

00:00-11:00

Nonstop0h 00m

£551

Flights are sorted by cheapest return flights first.

Deals found on 10/9

Showing 1-10 of 56 resultsSorted by cheapest first
1
2
3
...
6

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 £719). Flying from London to Alaska in December is currently the most expensive (average of £1,182). 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 £686 and £1,226 in October.
The cheapest return price found within the last 5 days was £597 on Scandinavian Airlines (1 Oct–10 Oct).

Reviews of airlines servicing Alaska

See what other customers who have flown with Alaska Airlines,Virgin Atlantic, andIcelandair 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
12,907 reviews
Check prices

Overall

7.9

Boarding

8.1

Entertainment

7.0

Crew

8.5

Food

7.0

Comfort

7.8

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
12,907 reviews
Alaska Airlines
7.9
Good
12,907 reviews
Check prices

Overall

7.9

Boarding

8.1

Entertainment

7.0

Crew

8.5

Food

7.0

Comfort

7.8

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.
Virgin Atlantic
7.4
Good
694 reviews
Alaska Airlines
7.9
Good
12,907 reviews
Check prices

Overall

7.9

Boarding

8.1

Entertainment

7.0

Crew

8.5

Food

7.0

Comfort

7.8

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
741 reviews
Alaska Airlines
7.9
Good
12,907 reviews
Check prices

Overall

7.9

Boarding

8.1

Entertainment

7.0

Crew

8.5

Food

7.0

Comfort

7.8

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
8,210 reviews
Alaska Airlines
7.9
Good
12,907 reviews
Check prices

Overall

7.9

Boarding

8.1

Entertainment

7.0

Crew

8.5

Food

7.0

Comfort

7.8

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
578 reviews
Alaska Airlines
7.9
Good
12,907 reviews
Check prices

Overall

7.9

Boarding

8.1

Entertainment

7.0

Crew

8.5

Food

7.0

Comfort

7.8

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 37m. Fly via Alaska Airlines, Scandinavian 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 City - Anchorage or London Gatwick - 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 £719). Flying from London to Alaska in December is currently the most expensive (average of £1,182). 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

Heathrow to Newark flights
Heathrow to John F Kennedy Intl flights
Heathrow to LaGuardia flights
Gatwick to John F Kennedy Intl flights
Gatwick to Newark flights
Stansted to John F Kennedy Intl flights
London City to John F Kennedy Intl flights
Luton to John F Kennedy Intl flights
Gatwick to LaGuardia flights
London City to Newark flights
Heathrow to Miami flights
Heathrow to Orlando flights
Stansted to Newark flights
Luton to Newark flights
Heathrow to Los Angeles flights
Manchester to John F Kennedy Intl flights
Heathrow to Boston flights
Heathrow to Dallas/Fort Worth flights
Heathrow to San Francisco flights
Manchester to Orlando flights
Heathrow to Las Vegas flights
Gatwick to Orlando flights
Gatwick to Miami flights
Heathrow to O'Hare Intl flights
London City to Miami flights
Manchester to Newark flights
Stansted to Miami flights
Manchester to LaGuardia flights
Heathrow to Atlanta flights
Gatwick to Los Angeles flights
Heathrow to Dulles Intl flights
Stansted to Orlando flights
Heathrow to Seattle flights
London City to Los Angeles flights
Heathrow to Hobby flights
Stansted to Los Angeles flights
London City to Orlando flights
Heathrow to Baltimore flights
Heathrow to Ontario flights
Luton to Miami flights
Stansted to LaGuardia flights
Heathrow to Tampa flights
Gatwick to Boston flights
Heathrow to George Bush Intcntl flights
Edinburgh to Newark flights
London City to Boston flights
Luton to LaGuardia flights
Heathrow to Fort Lauderdale flights
Edinburgh to John F Kennedy Intl flights
Luton to Los Angeles flights

Top 4 airlines flying from London to Alaska

AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest£582Average£690FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
CondorCheapest£617Average£1,029FlexibilityNo cancel feeOn-time76%
Search Condor flights
IcelandairCheapest£625Average£846FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Alaska AirlinesCheapest£823Average£1,077FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights

Fly with Cheapflights

How does Cheapflights help users find flights from London to Alaska?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from London to Alaska. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from London to Alaska?

Cheapflights helps you find that perfect flight to Alaska from London by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from London to Alaska with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from London to Alaska flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from London to Alaska become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.