How long is the flight from Alaska to London Heathrow Airport?

Alaska Airlines, Delta, and KLM can get you from Alaska to London Heathrow Airport in just under 19h 45m. Your travel time can differ by up to 4h 25m. Airlines will cover a distance of 4471 mi. Both multi-stop and direct flights can be found to your destination and back.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

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.

What is the cheapest time of day to fly from AK to LHR?

When flying from Alaska to London Heathrow Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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.

£251+ Cheap Flights from Alaska to London Heathrow Airport

Cheap flight deals from Alaska to Heathrow

Enter your travel dates to find the best prices.

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Best

Last-minute

One-way

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 5 September 2026.

Wed 14/1011:29 -

1 stop19h 06m

Fri 23/1011:45 -

2 stops17h 56m

Deal found 1/9£665

Wed 14/1011:29 -

1 stop19h 06m

Fri 23/1008:40 -

2 stops21h 01m

Deal found 4/9£668

Sun 11/1023:45 -

1 stop24h 55m

Tue 27/1013:00 -

2 stops38h 39m

Deal found 2/9£685

Sun 11/1006:30 -

1 stop19h 50m

Tue 27/1012:20 -

1 stop16h 21m

Deal found 1/9£687

Fri 2/1011:51 -

2 stops19h 44m

Fri 9/1008:40 -

2 stops21h 19m

Deal found 31/8£690

Fri 6/1120:14 -

1 stop27h 01m

Mon 16/1115:45 -

2 stops36h 24m

Deal found 2/9£701

Tue 10/1101:15 -

1 stop24h 25m

Mon 16/1108:40 -

2 stops21h 16m

Deal found 3/9£706

Sun 18/1001:50 -

2 stops29h 25m

Mon 26/1009:50 -

2 stops22h 55m

Deal found 4/9£729

Sat 17/1001:50 -

1 stop24h 30m

Sun 25/1012:20 -

1 stop20h 25m

Deal found 3/9£729

Fri 16/1012:04 -

1 stop18h 01m

Fri 23/1017:00 -

1 stop17h 37m

Deal found 1/9£803

Sat 19/920:22 -

2 stops25h 53m

Wed 23/911:05 -

1 stop17h 11m

Deal found 3/9£828

Wed 7/1014:23 -

2 stops16h 17m

Wed 14/1009:00 -

3 stops21h 29m

Deal found 31/8£836

Best flights from Alaska to Heathrow
Discover carefully curated flight deals from Alaska to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 5 September 2026.

Wed 3/305:00 -

1 stop22h 20m

Thu 18/314:45 -

1 stop15h 55m

Deal found 5/9£665

Mon 5/1001:40 -

2 stops19h 45m

Thu 22/1006:30 -

2 stops23h 29m

Deal found 31/8£674

Mon 11/120:40 -

1 stop26h 15m

Fri 15/113:00 -

2 stops39h 38m

Deal found 4/9£679

Tue 5/101:30 -

1 stop24h 10m

Sun 17/120:25 -

2 stops36h 50m

Deal found 1/9£702

Sun 18/1001:50 -

2 stops29h 25m

Mon 26/1009:50 -

2 stops22h 55m

Deal found 4/9£729

Sun 4/1014:23 -

1 stop14h 22m

Sun 11/1009:50 -

1 stop20h 55m

Deal found 4/9£888

Sun 10/102:58 -

1 stop24h 22m

Fri 15/114:45 -

1 stop18h 40m

Deal found 3/9£665

Sat 16/101:30 -

2 stops25h 10m

Sat 30/106:30 -

2 stops26h 45m

Deal found 5/9£705

Sun 18/1016:05 -

1 stop14h 30m

Sun 1/1106:30 -

2 stops23h 29m

Deal found 1/9£706

Mon 1/305:50 -

1 stop21h 30m

Fri 5/314:45 -

1 stop20h 53m

Deal found 4/9£740

Wed 28/1007:16 -

1 stop20h 54m

Thu 26/1114:55 -

1 stop26h 54m

Deal found 1/9£865

Tue 5/101:30 -

1 stop24h 10m

Sun 17/112:20 -

1 stop20h 55m

Deal found 1/9£723

Mon 1/307:14 -

2 stops20h 06m

Thu 4/314:45 -

2 stops15h 45m

Deal found 4/9£817

Sun 4/1014:23 -

2 stops32h 52m

Sun 11/1007:25 -

3 stops23h 04m

Deal found 4/9£952

Mon 19/1006:00 -

3 stops24h 05m

Mon 26/1014:45 -

2 stops27h 41m

Deal found 3/9£1,050

Find flight deals from Alaska to Heathrow

Round-trip from	£658
One-way from	£251
Popular in	June
Cheapest in	January
Average price	£880

Alaska Airlines
24/2-2/3
2 total stops
52h 08m total
Alaska to London

Search Deals

Delta
6/2-31/12
1 total stop
26h 01m total
Alaska to London

Search Deals

Highest demand for flights based on searches. 16% potential increase in price (£124 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£17 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 Alaska to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

AnchorageLondon

ANC Anchorage - LHR London Heathrow

ANCLHR

Anchorage

Sat 6/2

20:49-06:50

2 stops25h 01m

London Heathrow

Wed 31/12

00:00-13:00

Nonstop0h 00m

£251

AnchorageLondon

ANC Anchorage - LHR London Heathrow

ANCLHR

Anchorage

Mon 26/10

01:59-12:50

3 stops26h 51m

London Heathrow

Wed 31/12

00:00-13:00

Nonstop0h 00m

£340

AnchorageLondon

ANC Anchorage - LHR London Heathrow

ANCLHR

Anchorage

Sun 1/11

20:43-10:50

2 stops29h 07m

London Heathrow

Wed 31/12

00:00-13:00

Nonstop0h 00m

£342

AnchorageLondon

ANC Anchorage - LHR London Heathrow

ANCLHR

Anchorage

Mon 26/10

01:40-10:40

1 stop25h 00m

London Heathrow

Wed 31/12

00:00-13:00

Nonstop0h 00m

£342

AnchorageLondon

ANC Anchorage - LHR London Heathrow

ANCLHR

Anchorage

Sat 17/10

20:59-07:15

2 stops25h 16m

London Heathrow

Wed 31/12

00:00-13:00

Nonstop0h 00m

£342

JuneauLondon

JNU Juneau Intl - LHR London Heathrow

JNULHR

Juneau Intl

Mon 26/10

07:16-10:45

3 stops19h 29m

London Heathrow

Wed 31/12

00:00-13:00

Nonstop0h 00m

£446

JuneauLondon

JNU Juneau Intl - LHR London Heathrow

JNULHR

Juneau Intl

Sun 20/9

07:23-15:35

1 stop23h 12m

London Heathrow

Wed 31/12

00:00-13:00

Nonstop0h 00m

£541

JuneauLondon

JNU Juneau Intl - LHR London Heathrow

JNULHR

Juneau Intl

Sun 20/9

07:23-13:15

2 stops20h 52m

London Heathrow

Wed 31/12

00:00-13:00

Nonstop0h 00m

£541

Fastest return journey

JuneauLondon

JNU Juneau Intl - LHR London Heathrow

JNULHR

Juneau Intl

Tue 22/9

14:27-15:05

1 stop15h 38m

London Heathrow

Wed 31/12

00:00-13:00

Nonstop0h 00m

£625

AnchorageLondon

ANC Anchorage - LHR London Heathrow

ANCLHR

Anchorage

Wed 3/3

05:00-12:20

1 stop22h 20m

London Heathrow

Thu 18/3

14:45-22:40

1 stop15h 55m

£665

Flights are sorted by cheapest return flights first.

Deals found on 4/9

Showing 1-10 of 24 resultsSorted by cheapest first

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.

ANC-LHR

FAI-LHR

JNU-LHR

SIT-LHR

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

USAK-LHR

ANC-LHR

FAI-LHR

JNU-LHR

SIT-LHR

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

Currently, April is the cheapest month in which you can book a flight from Alaska to London Heathrow Airport (average of £690). Flying from Alaska to London Heathrow Airport in December is currently the most expensive (average of £2,010). 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.

Related info for your journey

How long is the flight from Alaska to London Heathrow Airport?
Alaska Airlines, Delta, and KLM can get you from Alaska to London Heathrow Airport in just under 19h 45m. Your travel time can differ by up to 4h 25m. 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, April is the cheapest month in which you can book a flight from Alaska to London Heathrow Airport (average of £690). Flying from Alaska to London Heathrow Airport in December is currently the most expensive (average of £2,010). 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.

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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.

Can Cheapflights notify me if prices for flights from Alaska to Heathrow 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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Cheap flights from Alaska to London Heathrow Airport from £251

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/2. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Alaska to Heathrow

Cheapest flights from Alaska to HeathrowExplore 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 5 September 2026.

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 5 September 2026.

Best flights from Alaska to HeathrowDiscover carefully curated flight deals from Alaska to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 5 September 2026.

Discover carefully curated flight deals from Alaska to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 5 September 2026.

Last-minute flights from Alaska to HeathrowDiscover last-minute flight deals from Alaska to Heathrow. Data last updated 5 September 2026 and is based on user searches.

Discover last-minute flight deals from Alaska to Heathrow. Data last updated 5 September 2026 and is based on user searches.

One-way flights from Alaska to HeathrowSearch for one-way flight options from Alaska to Heathrow. Find affordable one-way fares based on user searches. Data last updated 5 September 2026.

Search for one-way flight options from Alaska to Heathrow. Find affordable one-way fares based on user searches. Data last updated 5 September 2026.

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Best time to book a flight from Alaska to Heathrow

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

Related info for your journey

How long is the flight from Alaska to London Heathrow Airport?

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

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

How can I find direct flights from Alaska to Heathrow?

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

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

Travelling to a place near London Heathrow Airport?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Alaska to Heathrow

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Complete your trip

Complete your trip to Heathrow by adding a car hire and/or hotel booking to your travel itinerary.

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Search flights from Alaska to Heathrow by cabin class

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Other flights to Heathrow

Explore flights to Heathrow departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 5 September 2026.

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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 5 September 2026.

Best flights from Alaska to Heathrow
Discover carefully curated flight deals from Alaska to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 5 September 2026.

Last-minute flights from Alaska to Heathrow
Discover last-minute flight deals from Alaska to Heathrow. Data last updated 5 September 2026 and is based on user searches.

One-way flights from Alaska to Heathrow
Search for one-way flight options from Alaska to Heathrow. Find affordable one-way fares based on user searches. Data last updated 5 September 2026.