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Cheap flights from Alaska to London Heathrow Airport from £251

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 12/9. Fares are subject to change and may not be available on all flights or dates of travel.
ANC — LHR
17 Jun — 24 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Alaska to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from Alaska to Heathrow
Explore the most affordable flight options available from Alaska to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 May 2026.

Sat 5/921:55
ANC
-
LHR
1 stop25h 10m
British Airways
Mon 21/919:25
LHR
-
ANC
2 stops34h 04m
British Airways
Deal found 18/5£670
Tue 8/907:00
ANC
-
LHR
1 stop22h 25m
British Airways
Tue 15/919:25
LHR
-
ANC
2 stops34h 04m
British Airways
Deal found 15/5£671
Mon 7/907:05
ANC
-
LHR
1 stop23h 00m
Alaska Airlines
Tue 15/917:00
LHR
-
ANC
1 stop17h 36m
Alaska Airlines
Deal found 15/5£672
Tue 3/1107:00
ANC
-
LHR
1 stop20h 20m
Alaska Airlines
Tue 10/1114:45
LHR
-
ANC
1 stop19h 07m
Alaska Airlines
Deal found 14/5£674
Tue 3/1108:00
ANC
-
LHR
1 stop19h 20m
Alaska Airlines
Wed 11/1114:45
LHR
-
ANC
2 stops28h 02m
Alaska Airlines
Deal found 18/5£675
Sat 5/920:20
ANC
-
LHR
1 stop27h 40m
Multiple Airlines
Mon 21/919:25
LHR
-
ANC
2 stops34h 04m
Multiple Airlines
Deal found 18/5£678
Mon 7/906:00
ANC
-
LHR
1 stop21h 10m
Delta
Fri 18/911:45
LHR
-
ANC
2 stops19h 37m
Delta
Deal found 18/5£685
Tue 13/1009:05
ANC
-
LHR
1 stop19h 40m
Multiple Airlines
Thu 22/1009:50
LHR
-
ANC
1 stop20h 58m
Multiple Airlines
Deal found 17/5£685
Sun 6/921:55
ANC
-
LHR
2 stops39h 50m
Multiple Airlines
Mon 21/919:25
LHR
-
ANC
2 stops34h 04m
Multiple Airlines
Deal found 18/5£686
Tue 1/922:00
ANC
-
LHR
2 stops23h 20m
Delta
Thu 24/906:30
LHR
-
ANC
2 stops27h 03m
Delta
Deal found 18/5£688
Mon 7/900:30
ANC
-
LHR
2 stops20h 55m
Delta
Tue 15/909:55
LHR
-
ANC
2 stops24h 40m
Delta
Deal found 15/5£688
Mon 24/814:42
FAI
-
LHR
1 stop15h 53m
Delta
Tue 8/908:55
LHR
-
FAI
2 stops24h 11m
Delta
Deal found 15/5£716

Find flight deals from Alaska to Heathrow

Keep the following information in mind while searching for Alaska to Heathrow flight deals. Data was last updated 18 May 2026.

Round-trip from

£670

One-way from

£251

Popular in

December

Cheapest in

October

Average price

£906
British Airways
  • British Airways
  • 5/9-21/9
  • 3 total stops
  • 59h 14m total
  • Alaska to London
Search Deals
American Airlines
  • American Airlines
  • 12/9
  • 1 total stop
  • 23h 47m total
  • Alaska to London
Search Deals
Highest demand for flights based on searches. 2% potential increase in price (£18 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£15 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Alaska to Heathrow 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 18 May 2026.
Use the filters below to find and compare flights from Alaska to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

AnchorageLondon

ANC - LHR

ANCLHR

Anchorage

Tue 3/11

11:10-12:20

1 stop16h 10m

London Heathrow

Wed 11/11

14:45-00:52

1 stop19h 07m

£672

AnchorageLondon

ANC - LHR

ANCLHR

Anchorage

Tue 1/9

11:23-15:05

1 stop18h 42m

London Heathrow

Tue 15/9

17:00-01:36

1 stop17h 36m

£672

AnchorageLondon

ANC - LHR

ANCLHR

Anchorage

Tue 3/11

07:00-12:20

1 stop20h 20m

London Heathrow

Tue 10/11

14:45-09:40

2 stops27h 55m

£676

AnchorageLondon

ANC - LHR

ANCLHR

Anchorage

Tue 13/10

11:30-20:10

2 stops23h 40m

London Heathrow

Thu 22/10

06:30-16:18

2 stops18h 48m

£688

FairbanksLondon

FAI - LHR

FAILHR

Fairbanks

Mon 24/8

14:42-15:35

1 stop15h 53m

London Heathrow

Tue 8/9

08:55-00:06

2 stops24h 11m

£716
Fastest return journey

AnchorageLondon

ANC - LHR

ANCLHR

Anchorage

Tue 4/8

20:20-20:40

1 stop15h 20m

London Heathrow

Fri 21/8

11:25-19:35

1 stop17h 10m

£726

AnchorageLondon

ANC - LHR

ANCLHR

Anchorage

Sun 9/8

06:00-13:05

1 stop22h 05m

London Heathrow

Wed 26/8

11:45-23:59

2 stops21h 14m

£728

AnchorageLondon

ANC - LHR

ANCLHR

Anchorage

Wed 19/8

01:32-06:25

2 stops19h 53m

London Heathrow

Sun 30/8

06:30-16:26

2 stops18h 56m

£762

FairbanksLondon

FAI - LHR

FAILHR

Fairbanks

Tue 30/6

01:00-10:00

2 stops24h 00m

London Heathrow

Tue 1/9

06:50-19:16

2 stops21h 26m

£780

AnchorageLondon

ANC - LHR

ANCLHR

Anchorage

Mon 10/8

16:00-20:40

2 stops19h 40m

London Heathrow

Mon 17/8

16:25-19:35

2 stops36h 10m

£800

Flights are sorted by cheapest return flights first.

Deals found on 18/5

Showing 1-10 of 40 resultsSorted by cheapest first
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Best time to book a flight from Alaska to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Alaska 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 Alaska to London Heathrow Airport

What is the cheapest month to book a flight from Alaska to London Heathrow Airport?

Currently, August is the cheapest month in which you can book a flight from Alaska to London Heathrow Airport (average of £511). Flying from Alaska to London Heathrow Airport in June is currently the most expensive (average of £1,177). 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 Alaska to London Heathrow Airport?

Related info for your journey

Find useful and relevant information for your journey from Alaska to Heathrow. 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 Alaska to London Heathrow Airport?

    Alaska Airlines, Delta, and United Airlines can get you from Alaska to London Heathrow Airport in just under 15h 20m. Your travel time can differ by up to 8h 20m. Airlines will cover a distance of 4471 mi. Both multi-stop and direct flights can be found to your destination and back.

  • What are the most popular routes from Alaska to London Heathrow Airport?

    While some choose either Fairbanks - London Heathrow or Juneau Intl - London Heathrow, Anchorage - London Heathrow is the most popular route from Alaska to London Heathrow Airport.

  • Can I find deals for flights from Alaska to Heathrow that include hotel bookings?

    Yes. In addition to deals on Alaska to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Alaska to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Alaska to Heathrow.

  • Can I find deals for business class flights from Alaska to Heathrow?

    Yes. Cheapflights offers flight deals from Alaska to Heathrow 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 Alaska to London Heathrow Airport?

    Currently, August is the cheapest month in which you can book a flight from Alaska to London Heathrow Airport (average of £511). Flying from Alaska to London Heathrow Airport in June is currently the most expensive (average of £1,177). 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

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Hounslow
Croydon
Wembley
Northampton
Luton
Gatwick
Slough
Ilford
Hayes
Brentford
Colchester
Romford
Watford
Kingston upon Thames
Eastbourne
Swindon
Ipswich
Southend-on-Sea
Guildford

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Alaska to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
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Los Angeles to London City flights
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Seattle to Gatwick flights
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Fly with Cheapflights

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

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Alaska to Heathrow. 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 Alaska to Heathrow?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Alaska to Heathrow.

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

Certainly. Search results for flights to Heathrow from Alaska shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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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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