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Cheap flights from London to Alaska from £424

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/10. Fares are subject to change and may not be available on all flights or dates of travel.
LON — ANC
14 Sep — 21 Sep1
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
Explore the most affordable flight options available from London to Alaska. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 August 2026.

Thu 17/918:40 -
2 stops34h 35m
Fri 25/908:00 -
2 stops20h 35m
Deal found 13/8£565
Sat 26/906:40 -
2 stops22h 35m
Sat 3/1008:00 -
2 stops28h 40m
Deal found 12/8£575
Mon 21/919:30 -
2 stops33h 45m
Fri 25/908:00 -
2 stops20h 35m
Deal found 10/8£575
Sat 12/906:40 -
2 stops26h 47m
Sat 26/906:12 -
2 stops42h 08m
Deal found 10/8£582
Tue 22/906:40 -
3 stops26h 47m
Fri 25/908:00 -
2 stops23h 00m
Deal found 14/8£589
Thu 3/910:20 -
1 stop13h 30m
Thu 10/917:05 -
1 stop16h 45m
Deal found 12/8£636
Thu 20/810:20 -
1 stop13h 30m
Sat 5/916:50 -
1 stop16h 55m
Deal found 10/8£643
Sat 5/910:20 -
1 stop13h 30m
Sat 12/916:50 -
1 stop12h 50m
Deal found 14/8£679
Tue 29/915:40 -
2 stops26h 56m
Mon 5/1001:31 -
2 stops28h 09m
Deal found 14/8£729
Fri 25/906:40 -
2 stops26h 50m
Thu 1/1001:35 -
2 stops27h 00m
Deal found 11/8£735
Thu 3/910:20 -
2 stops20h 25m
Thu 10/917:05 -
1 stop12h 40m
Deal found 12/8£767
Mon 28/921:25 -
2 stops37h 23m
Sun 4/1001:17 -
2 stops34h 03m
Deal found 14/8£811

Find flight deals from London to Alaska

Keep the following information in mind while searching for London to Alaska flight deals. Data was last updated 15 August 2026.

Round-trip from

£565

One-way from

£424

Popular in

December

Cheapest in

October

Average price

£895
Scandinavian Airlines
  • Scandinavian Airlines
  • 17/9-25/9
  • 4 total stops
  • 55h 10m total
  • London to Alaska
Search Deals
1/10
  • 1/10
  • 2 total stops
  • 37h 38m total
  • London to Alaska
Search Deals
Highest demand for flights based on searches. 0% potential increase in price (£3 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
Average for round-trip flights in August 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from London to Alaska that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 15 August 2026.
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

Sat 12/9

06:40-00:27

2 stops26h 47m

Anchorage

Sat 26/9

08:00-18:50

3 stops25h 50m

£623

LondonAnchorage

LHR London Heathrow - ANC Anchorage

LHRANC

London Heathrow

Sun 27/9

06:40-20:15

3 stops22h 35m

Anchorage

Sun 4/10

06:12-16:25

3 stops25h 13m

£699

LondonAnchorage

LGW London Gatwick - ANC Anchorage

LGWANC

London Gatwick

Tue 29/9

15:40-09:36

2 stops26h 56m

Anchorage

Mon 5/10

01:31-14:40

2 stops28h 09m

£729

LondonFairbanks

LHR London Heathrow - FAI Fairbanks

LHRFAI

London Heathrow

Fri 25/9

06:40-00:30

2 stops26h 50m

Fairbanks

Thu 1/10

01:35-13:35

2 stops27h 00m

£735

LondonAnchorage

LHR London Heathrow - ANC Anchorage

LHRANC

London Heathrow

Tue 22/9

06:40-20:15

2 stops22h 35m

Anchorage

Fri 25/9

08:00-13:35

2 stops20h 35m

£743

LondonAnchorage

LGW London Gatwick - ANC Anchorage

LGWANC

London Gatwick

Thu 3/9

10:20-21:45

2 stops20h 25m

Anchorage

Thu 10/9

17:05-14:45

1 stop12h 40m

£767

LondonAnchorage

LHR London Heathrow - ANC Anchorage

LHRANC

London Heathrow

Tue 12/1

12:15-21:39

2 stops18h 24m

Anchorage

Fri 15/1

07:15-19:30

2 stops27h 15m

£769

LondonAnchorage

LGW London Gatwick - ANC Anchorage

LGWANC

London Gatwick

Mon 18/1

11:55-21:39

2 stops18h 44m

Anchorage

Thu 21/1

07:15-10:55

2 stops18h 40m

£813

LondonFairbanks

LHR London Heathrow - FAI Fairbanks

LHRFAI

London Heathrow

Thu 5/11

12:15-01:50

2 stops22h 35m

Fairbanks

Thu 19/11

05:30-19:30

2 stops29h 00m

£866

LondonFairbanks

LGW London Gatwick - FAI Fairbanks

LGWFAI

London Gatwick

Tue 29/9

10:20-22:46

2 stops21h 26m

Fairbanks

Tue 6/10

05:36-18:50

2 stops28h 14m

£881

Flights are sorted by cheapest return flights first.

Deals found on 14/8

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
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

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 £722). Flying from London to Alaska in June is currently the most expensive (average of £1,197). 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 £837 and £1,168 in September.
The cheapest return price found within the last 5 days was £565 on Scandinavian Airlines (17 Sept–25 Sept).

Reviews of airlines servicing Alaska

Get insights into the airlines that provide service to Alaska. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Alaska. Reviews last updated 15 August 2026.
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
12,811 reviews
Check prices

Overall

7.9

Food

7.0

Boarding

8.1

Crew

8.5

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.
Alaska Airlines
7.9
Good
12,811 reviews
Alaska Airlines
7.9
Good
12,811 reviews
Check prices

Overall

7.9

Food

7.0

Boarding

8.1

Crew

8.5

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.
Virgin Atlantic
7.5
Good
694 reviews
Alaska Airlines
7.9
Good
12,811 reviews
Check prices

Overall

7.9

Food

7.0

Boarding

8.1

Crew

8.5

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.
Icelandair
6.9
Okay
730 reviews
Alaska Airlines
7.9
Good
12,811 reviews
Check prices

Overall

7.9

Food

7.0

Boarding

8.1

Crew

8.5

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.
British Airways
6.7
Okay
8,163 reviews
Alaska Airlines
7.9
Good
12,811 reviews
Check prices

Overall

7.9

Food

7.0

Boarding

8.1

Crew

8.5

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.
Condor
6.5
Okay
554 reviews
Alaska Airlines
7.9
Good
12,811 reviews
Check prices

Overall

7.9

Food

7.0

Boarding

8.1

Crew

8.5

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.

Related info for your journey

Find useful and relevant information for your journey from London to Alaska. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from London to Alaska?

    There are many flights that can get you from London to Alaska in 13h 30m. Fly via Scandinavian Airlines, Icelandair, or Condor to get the fastest option. London and Alaska are separated by a distance of 4495 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 £722). Flying from London to Alaska in June is currently the most expensive (average of £1,197). 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

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Alternative routes for London to Alaska

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from London to Alaska

Discover the top 3 airlines that operate flights from London to Alaska. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 15 August 2026.
AirlineCheapestAverageFlexibilityOn-time
CondorCheapest£618Average£1,031FlexibilityNo cancel feeOn-time76%
Search Condor flights
IcelandairCheapest£626Average£767FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Alaska AirlinesCheapest£825Average£1,079FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights

Fly with Cheapflights

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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!

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