How long is the flight from London to Alaska?

Departing from London to Alaska will take you 18h 52m. Airlines will cover a distance of 4213 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

In terms of precipitation, rainfall in Alaska ranges from 0.5 - 3.3 inches per month. August is typically the wettest month, when rainfall can reach 3.3 in. April is typically the driest time to visit Alaska when rainfall is around 0.5 in.

If weather is an important factor for your trip to Alaska, 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 59.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 17.6 F).

What are the most popular routes from London to Alaska?

Most travelers choose London Heathrow - Anchorage, London Gatwick - Anchorage or London City - Anchorage when deciding on the best route from London to Alaska.

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 vacation 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.

$565+ Flights from London to Alaska

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Cheap flight deals from London to Alaska

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 December 16, 2025.

Wed 12/2412:15 pmLHR - FAI

2 stops23h 35mMultiple Airlines

Fri 1/95:51 amFAI - LHR

2 stops19h 59mMultiple Airlines

Deal found 12/16

$1,005

Tue 12/238:35 pmLHR - FAI

2 stops34h 51mMultiple Airlines

Fri 1/98:00 amFAI - LHR

2 stops26h 30mMultiple Airlines

Deal found 12/15

$1,253

Wed 12/2411:55 amLGW - FAI

2 stops19h 31mIcelandair

Fri 1/95:51 amFAI - LGW

2 stops20h 04mIcelandair

Deal found 12/16

$1,724

Tue 12/238:35 pmLHR - FAI

2 stops34h 51mIcelandair

Fri 1/98:00 amFAI - LHR

2 stops17h 50mIcelandair

Deal found 12/16

$1,730

Tue 12/168:35 pmLHR - ANC

2 stops34h 09mIcelandair

Tue 12/2311:00 amANC - LHR

2 stops38h 50mIcelandair

Deal found 12/15

$1,820

Wed 12/1711:55 amLGW - FAI

2 stops18h 48mIcelandair

Tue 1/63:48 pmFAI - LGW

2 stops34h 07mIcelandair

Deal found 12/14

$1,943

Wed 12/2412:20 pmLHR - FAI

1 stop21h 25mVirgin Atlantic

Thu 1/81:30 amFAI - LHR

1 stop24h 00mVirgin Atlantic

Deal found 12/16

$1,970

Tue 12/168:35 pmLHR - ANC

2 stops34h 09mMultiple Airlines

Tue 12/233:50 pmANC - LHR

2 stops34h 00mMultiple Airlines

Deal found 12/15

$1,979

Tue 12/1610:45 amLHR - ANC

2 stops20h 57mVirgin Atlantic

Tue 12/235:45 amANC - LHR

1 stop19h 45mVirgin Atlantic

Deal found 12/15

$1,986

Wed 12/178:35 pmLHR - FAI

2 stops34h 51mIcelandair

Tue 1/65:45 amFAI - LHR

2 stops28h 45mIcelandair

Deal found 12/14

$1,987

Tue 12/169:10 amLHR - ANC

2 stops22h 46mUnited Airlines

Tue 12/239:00 pmANC - LHR

1 stop25h 55mUnited Airlines

Deal found 12/15

$2,010

Tue 12/2311:55 amLGW - FAI

2 stops19h 31mIcelandair

Fri 1/98:00 amFAI - LGW

2 stops17h 55mIcelandair

Deal found 12/16

$2,063

Best flights from London to Alaska
Discover carefully curated flight deals from London to Alaska that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 16, 2025.

Tue 4/143:40 pmLGW - ANC

2 stops39h 49mIcelandair

Wed 4/291:00 pmANC - LGW

2 stops16h 40mIcelandair

Deal found 12/15

$836

Thu 1/1511:55 amLGW - ANC

2 stops18h 56mMultiple Airlines

Wed 1/211:10 amANC - LGW

2 stops24h 45mMultiple Airlines

Deal found 12/16

$932

Tue 5/125:25 pmLHR - ANC

1 stop37h 57mVirgin Atlantic

Tue 5/268:30 pmANC - LHR

1 stop25h 00mVirgin Atlantic

Deal found 12/15

$1,191

Thu 1/226:35 amLHR - ANC

2 stops25h 40mUnited Airlines

Mon 1/269:00 amANC - LHR

1 stop15h 40mUnited Airlines

Deal found 12/14

$1,484

Tue 4/147:15 pmLCY - ANC

2 stops56h 20mBritish Airways

Wed 4/298:50 pmANC - LCY

2 stops39h 20mBritish Airways

Deal found 12/15

$1,604

Thu 1/227:45 amLCY - ANC

2 stops20h 11mKLM

Sun 1/255:55 amANC - LCY

2 stops25h 40mKLM

Deal found 12/15

$1,631

Tue 5/123:40 pmLGW - ANC

2 stops19h 43mMultiple Airlines

Tue 5/265:00 amANC - LGW

2 stops24h 40mMultiple Airlines

Deal found 12/15

$941

Fri 1/3011:55 amLGW - ANC

2 stops18h 56mIcelandair

Fri 2/68:00 amANC - LGW

2 stops17h 55mIcelandair

Deal found 12/15

$955

Tue 5/121:05 pmLHR - ANC

2 stops22h 18mMultiple Airlines

Tue 5/269:00 amANC - LHR

2 stops17h 55mMultiple Airlines

Deal found 12/15

$942

Thu 1/1512:15 pmLHR - ANC

2 stops18h 36mIcelandair

Thu 1/228:00 amANC - LHR

2 stops17h 50mIcelandair

Deal found 12/16

$961

Fri 1/3011:55 amLGW - ANC

2 stops20h 57mMultiple Airlines

Fri 2/65:05 amANC - LGW

2 stops20h 50mMultiple Airlines

Deal found 12/16

$945

Thu 1/2212:15 pmLHR - ANC

2 stops18h 36mIcelandair

Sun 1/258:00 amANC - LHR

2 stops17h 50mIcelandair

Deal found 12/15

$978

Mon 1/2611:55 amLGW - ANC

2 stops19h 57mMultiple Airlines

Mon 2/98:00 amANC - LGW

2 stops17h 55mMultiple Airlines

Deal found 12/15

$963

Tue 1/1311:55 amLGW - ANC

2 stops18h 56mIcelandair

Tue 1/278:00 amANC - LGW

2 stops17h 55mIcelandair

Deal found 12/16

$981

Thu 1/2211:55 amLGW - ANC

2 stops18h 56mMultiple Airlines

Sun 1/258:00 amANC - LGW

2 stops17h 55mMultiple Airlines

Deal found 12/15

$1,010

Thu 1/2211:55 amLGW - ANC

2 stops18h 56mIcelandair

Mon 1/268:00 amANC - LGW

2 stops17h 55mIcelandair

Deal found 12/14

$1,010

Thu 1/292:30 pmLHR - FAI

1 stop18h 52mVirgin Atlantic

Wed 2/41:30 amFAI - LHR

1 stop24h 00mVirgin Atlantic

Deal found 12/15

$1,496

Thu 1/2912:15 pmLHR - FAI

2 stops20h 41mIcelandair

Thu 2/58:00 amFAI - LHR

2 stops17h 50mIcelandair

Deal found 12/15

$1,013

Mon 1/2612:20 pmLHR - ANC

1 stop17h 31mMultiple Airlines

Mon 2/97:00 amANC - LHR

1 stop18h 30mMultiple Airlines

Deal found 12/15

$1,071

Thu 1/2212:15 pmLHR - ANC

2 stops18h 36mIcelandair

Mon 1/268:00 amANC - LHR

2 stops17h 50mIcelandair

Deal found 12/14

$1,014

Thu 1/296:40 amLHR - FAI

3 stops26h 42mMultiple Airlines

Wed 2/41:30 amFAI - LHR

3 stops29h 30mMultiple Airlines

Deal found 12/15

$1,168

Thu 1/152:50 pmLHR - ANC

2 stops30h 06mMultiple Airlines

Thu 1/228:00 amANC - LHR

1 stop17h 30mMultiple Airlines

Deal found 12/16

$1,179

Tue 4/149:50 amLHR - ANC

1 stop23h 27mMultiple Airlines

Wed 4/291:15 pmANC - LHR

1 stop16h 00mMultiple Airlines

Deal found 12/15

$1,250

Thu 2/192:55 pmLHR - FAI

1 stop16h 20mBritish Airways

Mon 2/2311:30 amFAI - LHR

1 stop15h 50mBritish Airways

Deal found 12/15

$3,363

Mon 1/269:50 amLCY - ANC

2 stops22h 02mMultiple Airlines

Mon 2/98:00 amANC - LCY

2 stops24h 40mMultiple Airlines

Deal found 12/15

$1,445

Thu 1/159:40 amLCY - ANC

2 stops21h 11mMultiple Airlines

Thu 1/228:00 amANC - LCY

2 stops24h 40mMultiple Airlines

Deal found 12/16

$1,574

Last-minute flights from London to Alaska
Discover last-minute flight deals from London to Alaska. Data last updated December 16, 2025 and is based on user searches.

Wed 12/2412:15 pmLHR - FAI

2 stops23h 35mMultiple Airlines

Fri 1/95:51 amFAI - LHR

2 stops19h 59mMultiple Airlines

Deal found 12/16

$1,005

Tue 1/138:35 pmLHR - ANC

2 stops35h 17mIcelandair

Tue 1/278:00 amANC - LHR

2 stops17h 50mIcelandair

Deal found 12/16

$882

Tue 1/1311:55 amLGW - ANC

2 stops18h 56mIcelandair

Tue 1/278:00 amANC - LGW

2 stops17h 55mIcelandair

Deal found 12/16

$981

Thu 1/1511:55 amLGW - ANC

2 stops18h 56mMultiple Airlines

Wed 1/211:10 amANC - LGW

2 stops24h 45mMultiple Airlines

Deal found 12/16

$932

Thu 1/1512:15 pmLHR - ANC

2 stops18h 36mIcelandair

Thu 1/225:05 amANC - LHR

2 stops29h 25mIcelandair

Deal found 12/16

$933

Thu 1/2212:15 pmLHR - ANC

2 stops18h 36mIcelandair

Sun 1/258:00 amANC - LHR

2 stops17h 50mIcelandair

Deal found 12/15

$978

Mon 1/268:35 pmLHR - ANC

2 stops34h 16mIcelandair

Mon 2/98:00 amANC - LHR

2 stops17h 50mIcelandair

Deal found 12/15

$927

Mon 1/2611:55 amLGW - ANC

2 stops19h 57mMultiple Airlines

Mon 2/98:00 amANC - LGW

2 stops17h 55mMultiple Airlines

Deal found 12/15

$963

Fri 1/302:55 pmLHR - ANC

1 stop15h 56mMultiple Airlines

Thu 2/512:38 amANC - LHR

1 stop21h 32mMultiple Airlines

Deal found 12/16

$903

Fri 1/308:35 pmLHR - ANC

2 stops34h 16mIcelandair

Fri 2/68:00 amANC - LHR

2 stops17h 50mIcelandair

Deal found 12/16

$931

Fri 1/3011:55 amLGW - ANC

2 stops20h 57mMultiple Airlines

Fri 2/65:05 amANC - LGW

2 stops20h 50mMultiple Airlines

Deal found 12/16

$945

Fri 1/3011:55 amLGW - ANC

2 stops18h 56mIcelandair

Fri 2/68:00 amANC - LGW

2 stops17h 55mIcelandair

Deal found 12/15

$955

One-way flights from London to Alaska
Search for one-way flight options from London to Alaska. Find affordable one-way fares based on user searches. Data last updated December 16, 2025.

Sun 2/152:50 pmLHR - FAI

3 stops43h 00mMultiple Airlines

Deal found 12/16

$565

Sun 2/156:40 pmLGW - FAI

3 stops46h 00mMultiple Airlines

Deal found 12/16

$628

Thu 4/232:10 pmLHR - ANC

2 stops19h 22mMultiple Airlines

Deal found 12/16

$649

Mon 5/1812:00 pmLHR - FAI

2 stops21h 24mMultiple Airlines

Deal found 12/16

$858

Thu 4/2311:05 amLHR - ANC

1 stop17h 40mLufthansa

Deal found 12/16

$1,033

Sun 2/158:05 pmLCY - FAI

2 stops37h 17mKLM

Deal found 12/16

$1,037

Thu 4/239:25 pmLHR - ANC

2 stops37h 03mIcelandair

Deal found 12/16

$1,070

Sun 2/1512:20 pmLHR - FAI

1 stop21h 02mDelta

Deal found 12/16

$1,083

Mon 5/183:40 pmLGW - FAI

2 stops19h 40mMultiple Airlines

Deal found 12/16

$1,096

Thu 4/238:00 amLHR - ANC

1 stop20h 45mUnited Airlines

Deal found 12/16

$1,104

Mon 5/183:40 pmLGW - FAI

2 stops41h 44mIcelandair

Deal found 12/15

$1,117

Mon 5/1811:20 amLHR - FAI

1 stop21h 46mDelta

Deal found 12/15

$1,156

Find flight deals from London to Alaska

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$802 (Trip.com)
One-way from	$565 (Kiwi.com)
Popular in	January
Cheapest in	October
Average price	$1,592

Provider with most accurate pricing for London (LON)-Anchorage flight deals.

Search Deals

Provider most trusted by Cheapflights users for London (LON)-Anchorage flights.

Search Deals

From London (LON) to Alaska

Search Deals

One-way flight from London (LON) to Alaska

Search Deals

Highest demand for flights based on searches. 13% potential increase in price ($207 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($32 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

LondonAnchorage

LGW - ANC

LGWANC

London Gatwick

Tue 4/14

3:40 pm-10:29 pm

2 stops39h 49m

Anchorage

Wed 4/29

1:00 pm-2:40 pm

2 stops16h 40m

$836

LondonAnchorage

LGW - ANC

LGWANC

London Gatwick

Thu 1/15

11:55 am-9:51 pm

2 stops18h 56m

Anchorage

Wed 1/21

1:10 am-10:55 am

2 stops24h 45m

$932

LondonAnchorage

LGW - ANC

LGWANC

London Gatwick

Tue 5/12

3:40 pm-2:23 am

2 stops19h 43m

Anchorage

Tue 5/26

5:00 am-2:40 pm

2 stops24h 40m

$941

LondonAnchorage

LHR - ANC

LHRANC

London Heathrow

Tue 5/12

1:05 pm-2:23 am

2 stops22h 18m

Anchorage

Tue 5/26

9:00 am-11:55 am

2 stops17h 55m

$942

LondonAnchorage

LGW - ANC

LGWANC

London Gatwick

Fri 1/30

11:55 am-11:52 pm

2 stops20h 57m

Anchorage

Fri 2/6

5:05 am-10:55 am

2 stops20h 50m

$945

LondonAnchorage

LGW - ANC

LGWANC

London Gatwick

Fri 1/30

11:55 am-9:51 pm

2 stops18h 56m

Anchorage

Fri 2/6

8:00 am-10:55 am

2 stops17h 55m

$955

LondonAnchorage

LHR - ANC

LHRANC

London Heathrow

Thu 1/15

12:15 pm-9:51 pm

2 stops18h 36m

Anchorage

Thu 1/22

8:00 am-10:50 am

2 stops17h 50m

$961

LondonAnchorage

LGW - ANC

LGWANC

London Gatwick

Mon 1/26

11:55 am-10:52 pm

2 stops19h 57m

Anchorage

Mon 2/9

8:00 am-10:55 am

2 stops17h 55m

$963

LondonAnchorage

LHR - ANC

LHRANC

London Heathrow

Thu 1/22

12:15 pm-9:51 pm

2 stops18h 36m

Anchorage

Sun 1/25

8:00 am-10:50 am

2 stops17h 50m

$978

LondonAnchorage

LGW - ANC

LGWANC

London Gatwick

Tue 1/13

11:55 am-9:51 pm

2 stops18h 56m

Anchorage

Tue 1/27

8:00 am-10:55 am

2 stops17h 55m

$981

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 47 results

...

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 round-trip 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, September is the cheapest month in which you can book a flight from London to Alaska (average of $878). Flying from London to Alaska in July is currently the most expensive (average of $1,318). 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.

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

It’s optimal to fly from London to Alaska at noon. By choosing this option you can save up to 19% on the cost of your flight, compared to a flight in the morning.

Related info for your journey

How long is the flight from London to Alaska?
Departing from London to Alaska will take you 18h 52m. Airlines will cover a distance of 4213 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
What are the most popular routes from London to Alaska?
Most travelers choose London Heathrow - Anchorage, London Gatwick - Anchorage or London City - Anchorage when deciding on the best route from London to Alaska.
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 vacation 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, September is the cheapest month in which you can book a flight from London to Alaska (average of $878). Flying from London to Alaska in July is currently the most expensive (average of $1,318). 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

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Top airline flying from London to Alaska

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$1,401	Average$1,643	FlexibilityNo cancel fee	On-timeN/A

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$565+ Cheap flights from London (LON) to Alaska

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 2/15. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from London to Alaska

Cheapest flights from London to AlaskaExplore 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 December 16, 2025.

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 December 16, 2025.

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 December 16, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from London to Alaska that are best for you.

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.

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?

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

Find hourly flight availability from London to Alaska. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 16, 2025.

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?

What are the most popular routes from London to Alaska?

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

How can I find direct flights from London to Alaska?

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for London to Alaska

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from London to Alaska

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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 December 16, 2025.