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Cheap flights from London Heathrow Airport to Alaska from £481

LHR — ANC
2 Nov — 9 Nov1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to Alaska

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Alaska

Thu 5/1112:15 -
2 stops19h 31m
Wed 11/1101:48 -
2 stops24h 02m
Deal found 29/9£600
Thu 5/1114:45 -
1 stop17h 01m
Thu 12/1109:03 -
1 stop18h 17m
Deal found 29/9£656
Tue 10/1114:45 -
1 stop17h 59m
Mon 16/1102:55 -
1 stop24h 25m
Deal found 29/9£657
Tue 10/1112:20 -
1 stop17h 28m
Mon 16/1102:55 -
2 stops19h 10m
Deal found 29/9£669
Tue 27/1014:45 -
1 stop16h 54m
Thu 12/1106:45 -
1 stop20h 35m
Deal found 29/9£674
Tue 27/1012:20 -
1 stop16h 31m
Wed 11/1101:48 -
2 stops20h 17m
Deal found 29/9£683
Thu 29/1012:20 -
1 stop18h 28m
Thu 12/1108:00 -
1 stop17h 40m
Deal found 28/9£725
Mon 9/1120:35 -
2 stops36h 09m
Mon 16/1117:28 -
2 stops32h 22m
Deal found 2/10£732
Mon 23/1114:45 -
1 stop19h 14m
Tue 8/1205:45 -
1 stop21h 35m
Deal found 1/10£751
Thu 12/1109:00 -
3 stops35h 57m
Sat 14/1123:59 -
2 stops22h 26m
Deal found 28/9£755
Mon 23/1112:15 -
2 stops21h 44m
Tue 8/1212:04 -
1 stop15h 16m
Deal found 2/10£775
Thu 29/1014:45 -
1 stop18h 52m
Mon 2/1112:13 -
1 stop15h 07m
Deal found 2/10£803

Find flight deals from Heathrow to Alaska

Round-trip from

£600

One-way from

£481

Popular in

December

Cheapest in

January

Average price

£991
5/11-11/11
  • 5/11-11/11
  • 4 total stops
  • 43h 33m total
  • London to Alaska
Search Deals
4/3-31/12
  • 4/3-31/12
  • 3 total stops
  • 46h 06m total
  • London to Alaska
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (£27 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£21 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2026
Search Deals

Cheapflights Fare Finder

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

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Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonFairbanks

LHR London Heathrow - FAI Fairbanks

LHRFAI

London Heathrow

Thu 25/2

12:15-00:18

2 stops21h 03m

Fairbanks

Wed 31/12

00:00-11:00

Nonstop0h 00m

£508

LondonFairbanks

LHR London Heathrow - FAI Fairbanks

LHRFAI

London Heathrow

Sat 27/2

12:15-00:27

3 stops21h 12m

Fairbanks

Wed 31/12

00:00-11:00

Nonstop0h 00m

£530

LondonFairbanks

LHR London Heathrow - FAI Fairbanks

LHRFAI

London Heathrow

Fri 26/2

20:35-02:38

2 stops39h 03m

Fairbanks

Wed 31/12

00:00-11:00

Nonstop0h 00m

£548

LondonAnchorage

LHR London Heathrow - ANC Anchorage

LHRANC

London Heathrow

Sat 13/2

14:45-02:11

1 stop20h 26m

Anchorage

Wed 31/12

00:00-11:00

Nonstop0h 00m

£604

LondonJuneau

LHR London Heathrow - JNU Juneau Intl

LHRJNU

London Heathrow

Thu 19/11

12:15-21:37

2 stops18h 22m

Juneau Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£624
Fastest return journey

LondonJuneau

LHR London Heathrow - JNU Juneau Intl

LHRJNU

London Heathrow

Thu 19/11

14:45-21:28

1 stop15h 43m

Juneau Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£700

LondonAnchorage

LHR London Heathrow - ANC Anchorage

LHRANC

London Heathrow

Fri 23/10

06:00-13:37

3 stops40h 37m

Anchorage

Wed 31/12

00:00-11:00

Nonstop0h 00m

£725

LondonFairbanks

LHR London Heathrow - FAI Fairbanks

LHRFAI

London Heathrow

Mon 23/11

14:45-00:59

1 stop19h 14m

Fairbanks

Tue 8/12

05:00-12:20

2 stops22h 20m

£759

LondonFairbanks

LHR London Heathrow - FAI Fairbanks

LHRFAI

London Heathrow

Mon 23/11

12:15-00:59

2 stops21h 44m

Fairbanks

Tue 8/12

12:04-12:20

1 stop15h 16m

£775

LondonFairbanks

LHR London Heathrow - FAI Fairbanks

LHRFAI

London Heathrow

Thu 22/10

17:00-01:37

1 stop17h 37m

Fairbanks

Mon 26/10

05:36-12:20

1 stop22h 44m

£806

Flights are sorted by cheapest return flights first.

Deals found on 30/9

Showing 1-10 of 39 resultsSorted by cheapest first
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Best time to book a flight from Heathrow to Alaska

Have a flexible travel schedule? Discover the best time to fly to Alaska from Heathrow with our price prediction graph.
Estimated return price

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Alaska

No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Alaska

Read reviews from past customers who have flown with Alaska Airlines and Icelandair from London Heathrow Airport to Alaska. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
7.9
Good
13,006 reviews
Check prices

Food

7.0

Crew

8.5

Entertainment

7.0

Boarding

8.1

Comfort

7.8

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.
Alaska Airlines
7.9
Good
13,006 reviews
Alaska Airlines
7.9
Good
13,006 reviews
Check prices

Food

7.0

Crew

8.5

Entertainment

7.0

Boarding

8.1

Comfort

7.8

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.
Icelandair
6.9
Okay
756 reviews
Alaska Airlines
7.9
Good
13,006 reviews
Check prices

Food

7.0

Crew

8.5

Entertainment

7.0

Boarding

8.1

Comfort

7.8

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.

Related info for your journey

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

    Airlines like Alaska Airlines fly from London Heathrow Airport to Alaska in about 19h 14m. The time it takes to get you to your destination can typically vary by up to . There are 4213 mi between London Heathrow Airport and Alaska.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Heathrow 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Heathrow to Alaska

AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£640Average£867FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Alaska AirlinesCheapest£844Average£1,104FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights

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Yes! Cheapflights helps users easily find flights from Heathrow to Alaska with no change fees.

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Yes, Cheapflights offers price alerts on Heathrow to Alaska flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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