What is the cheapest airline that flies from London to Alaska?

Icelandair, Alaska Airlines, and Delta are the most popular carriers operating from London to Alaska

When did momondo last update prices for flights from London to Alaska?

Prices for flights from London to Alaska are refreshed on a daily basis.

How many operators does momondo search for flights from London to Alaska?

As of November 2026, there are 2 operators available to choose from for flights from London to Alaska.

How old do you have to be to fly from London to Alaska?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London to Alaska.

What documentation or ID do you need to fly to Alaska?

The required travel and health documents for your Alaska trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Alaska. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

£511 Cheap Flights from London to Alaska in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from London to Alaska

Return

One-way

Cheap return flights

Enter your travel dates to find the best prices.

10:00 - 21:39LGW London Gatwick-ANC Anchorage

20h 39m2 stops Frankfurt am Main Seattle/Tacoma Intl

09:00 - 14:45ANC Anchorage-LGW London Gatwick

20h 45m2 stops Seattle/Tacoma Intl Frankfurt am Main

£687Multiple Airlines

Thu, 8 Apr - Fri, 16 Apr

06:40 - 00:37LHR London Heathrow-FAI Fairbanks

26h 57m3 stops Kastrup Copenhagen San Francisco Seattle/Tacoma Intl

01:42 - 16:00FAI Fairbanks-LHR London Heathrow

29h 18m3 stops Seattle/Tacoma Intl San Francisco Kastrup Copenhagen

£736Multiple Airlines

Wed, 2 Dec - Tue, 8 Dec

10:00 - 20:39LGW London Gatwick-ANC Anchorage

19h 39m2 stops Frankfurt am Main Seattle/Tacoma Intl

08:00 - 14:45ANC Anchorage-LGW London Gatwick

21h 45m2 stops Seattle/Tacoma Intl Frankfurt am Main

£738Multiple Airlines

Thu, 8 Apr - Thu, 15 Apr

10:25 - 22:27LGW London Gatwick-ANC Anchorage

21h 02m2 stops Frankfurt am Main Seattle/Tacoma Intl

05:00 - 19:25ANC Anchorage-LGW London Gatwick

29h 25m2 stops Seattle/Tacoma Intl Frankfurt am Main

£764Multiple Airlines

Thu, 4 Feb - Sun, 14 Feb

14:45 - 22:17LHR London Heathrow-ANC Anchorage

16h 32m1 stop Seattle/Tacoma Intl

09:12 - 12:20ANC Anchorage-LHR London Heathrow

18h 08m1 stop Seattle/Tacoma Intl

£809Alaska Airlines

Thu, 10 Dec - Thu, 24 Dec

17:00 - 23:59LHR London Heathrow-ANC Anchorage

15h 59m1 stop Seattle/Tacoma Intl

15:20 - 15:05ANC Anchorage-LHR London Heathrow

14h 45m1 stop Seattle/Tacoma Intl

£898Alaska Airlines

Sun, 2 May - Sun, 9 May

16:10 - 21:38LGW London Gatwick-ANC Anchorage

38h 28m2 stops Frankfurt am Main Seattle/Tacoma Intl

05:45 - 15:00ANC Anchorage-LGW London Gatwick

24h 15m2 stops Seattle/Tacoma Intl Frankfurt am Main

£1,319Condor

Sun, 20 Dec - Sun, 27 Dec

10:25 - 20:40LGW London Gatwick-ANC Anchorage

43h 15m2 stops Frankfurt am Main Seattle/Tacoma Intl

09:00 - 19:25ANC Anchorage-LGW London Gatwick

25h 25m2 stops Seattle/Tacoma Intl Frankfurt am Main

£1,467Condor

Sat, 26 Dec - Thu, 7 Jan

14:45 - 08:23LHR London Heathrow-KTN Ketchikan

50h 38m2 stops Seattle/Tacoma Intl Juneau Intl

17:35 - 12:20KTN Ketchikan-LHR London Heathrow

33h 45m1 stop Seattle/Tacoma Intl

£1,616Alaska Airlines

Wed, 23 Dec - Wed, 30 Dec

14:45 - 08:23LHR London Heathrow-KTN Ketchikan

50h 38m2 stops Seattle/Tacoma Intl Juneau Intl

20:29 - 12:20KTN Ketchikan-LHR London Heathrow

30h 51m2 stops Juneau Intl Seattle/Tacoma Intl

£1,642Alaska Airlines

Wed, 23 Dec - Wed, 30 Dec

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Alaska Airlines flights from London to Alaska

Our best Alaska Airlines deals on London to Alaska flight tickets

Alaska Airlines

10 Dec

LHR14:45London Heathrow

16h 32m

1 stop

ANC22:17Anchorage

24 Dec

ANC09:12Anchorage

18h 08m

1 stop

LHR12:20London Heathrow

£809

Alaska Airlines

6 Dec

LHR14:45London Heathrow

17h 36m

1 stop

ANC23:21Anchorage

13 Dec

ANC10:10Anchorage

17h 10m

1 stop

LHR12:20London Heathrow

£964

Alaska Airlines

10 Dec

LHR14:45London Heathrow

30h 23m

2 stops

ANC12:08Anchorage

28 Dec

ANC02:50Anchorage

24h 30m

1 stop

LHR12:20London Heathrow

£1,025

Icelandair flights from London to Alaska

Our best Icelandair deals on London to Alaska flight tickets

Icelandair

4 Feb

LHR20:35London Heathrow

34h 52m

2 stops

ANC22:27Anchorage

14 Feb

ANC09:00Anchorage

16h 50m

2 stops

LHR10:50London Heathrow

£815

Icelandair

25 Feb

LHR12:15London Heathrow

19h 35m

2 stops

FAI22:50Fairbanks

1 Mar

FAI07:00Fairbanks

18h 50m

2 stops

LHR10:50London Heathrow

£1,005

Icelandair

25 Feb

LHR12:15London Heathrow

19h 35m

2 stops

FAI22:50Fairbanks

1 Mar

FAI07:00Fairbanks

18h 50m

2 stops

LHR10:50London Heathrow

£1,011

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonAnchorage

LGW London Gatwick - ANC Anchorage

LGWANC

London Gatwick

Thu 8/4

10:00-21:39

2 stops20h 39m

Anchorage

Fri 16/4

09:00-14:45

2 stops20h 45m

£687

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

LondonAnchorage

LGW London Gatwick - ANC Anchorage

LGWANC

London Gatwick

Thu 8/4

10:00-20:39

2 stops19h 39m

Anchorage

Thu 15/4

08:00-14:45

2 stops21h 45m

£738

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

LondonAnchorage

LHR London Heathrow - ANC Anchorage

LHRANC

London Heathrow

Thu 10/12

14:45-22:17

1 stop16h 32m

Anchorage

Thu 24/12

09:12-12:20

1 stop18h 08m

£809

Fastest return journey

LondonAnchorage

LHR London Heathrow - ANC Anchorage

LHRANC

London Heathrow

Sun 2/5

17:00-23:59

1 stop15h 59m

Anchorage

Sun 9/5

15:20-15:05

1 stop14h 45m

£898

LondonAnchorage

LGW London Gatwick - ANC Anchorage

LGWANC

London Gatwick

Sun 20/12

16:10-21:38

2 stops38h 28m

Anchorage

Sun 27/12

05:45-15:00

2 stops24h 15m

£1,319

LondonAnchorage

LGW London Gatwick - ANC Anchorage

LGWANC

London Gatwick

Sat 26/12

10:25-20:40

2 stops43h 15m

Anchorage

Thu 7/1

09:00-19:25

2 stops25h 25m

£1,467

LondonKetchikan

LHR London Heathrow - KTN Ketchikan

LHRKTN

London Heathrow

Wed 23/12

14:45-08:23

2 stops50h 38m

Ketchikan

Wed 30/12

17:35-12:20

1 stop33h 45m

£1,616

LondonKetchikan

LHR London Heathrow - KTN Ketchikan

LHRKTN

London Heathrow

Wed 23/12

14:45-08:23

2 stops50h 38m

Ketchikan

Wed 30/12

20:29-12:20

2 stops30h 51m

£1,642

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from London to Alaska

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to Alaska?

The cheapest month to fly to Alaska from London is in January. Flight prices, which tend to average around £767, are often lower during this time because this is during the off-season. If you’re not able to fly to Alaska in January, then May is your next best option. Flight prices from London to Alaska during May average around £836.

Can stopping save me money on London to Alaska flights?

You could potentially save up to 78% on your flight if you consider stops on a London to Alaska flight.

Cheap London to Alaska flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London to Alaska

Best price found	£511
Fastest flight time	18h 24m
Direct flights	None

The best one-way flight to Alaska from London in the past 72 hours is £511. The best return flight deal from London to Alaska found on momondo in the last 72 hours is £687.

The fastest flight from London to Alaska takes 18h 24m

There are no direct flights from London to Alaska. There are no popular flight routes from London to Alaska.

Search flight deals

Frequently asked questions about flying from London to Alaska

When did momondo last update prices for flights from London to Alaska?
Prices for flights from London to Alaska are refreshed on a daily basis.
How many operators does momondo search for flights from London to Alaska?
As of November 2026, there are 2 operators available to choose from for flights from London to Alaska.
How old do you have to be to fly from London to Alaska?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London to Alaska.
What documentation or ID do you need to fly to Alaska?
The required travel and health documents for your Alaska trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Alaska. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from London to Alaska

Compare and see reviews for airlines that fly from London to Alaska with momondo

Airline	Rating	Free Cancellation	Price
Condor	PriceFrom £626	Free Cancellation	Rating 6.7 626 reviews		Search Condor flights
Alaska Airlines	PriceFrom £845	Free Cancellation	Rating 7.9 13,159 reviews		Search Alaska Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from London to Alaska?

Finding the right flight to Alaska from London is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Alaska quick and easy, saving you time and money.

Can I find flights from London to Alaska with flexible booking policies on momondo?

momondo does allow users to show only those flights to Alaska from London which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from London to Alaska?

momondo helps you find the best flight between London and Alaska by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from London to Alaska right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Alaska from London. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.