Which airlines fly to Idaho?

United Airlines, Virgin Atlantic and Alaska Airlines are the top three most popular airlines that fly to Idaho from London Heathrow Airport according to our data. United Airlines is the first choice among our users, with 35% of people opting to fly with this airline when travelling to Idaho. Keep in mind that there are 4 different airlines that fly to Idaho on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from London Heathrow to Idaho?

Air Canada, Icelandair, and United Airlines are the most popular carriers operating from London Heathrow to Idaho

How many operators does momondo search for flights from London Heathrow Airport to Idaho?

There are 4 operators available for flights from London Heathrow Airport to Idaho as of October 2026.

How old do you have to be to fly from London Heathrow Airport to Idaho?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Heathrow Airport to Idaho.

What documentation or ID do you need to fly to Idaho?

The travel and health documents you'll need for your trip to Idaho may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Idaho. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

£403 Cheap Flights from London Heathrow Airport to Idaho in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from London Heathrow Airport to Idaho

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One-way

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Cheap return flights

Enter your travel dates to find the best prices.

18:00 - 14:52LHR London Heathrow-BOI Boise Air Term. Gowen Fld

27h 52m2 stops Toronto Pearson Intl San Francisco

16:10 - 05:55BOI Boise Air Term. Gowen Fld-LHR London Heathrow

30h 45m2 stops San Francisco Chicago O'Hare Intl

£699United Airlines

Tue, 5 Jan - Tue, 12 Jan

14:45 - 14:19LHR London Heathrow-BOI Boise Air Term. Gowen Fld

30h 34m1 stop Seattle/Tacoma Intl

14:12 - 12:20BOI Boise Air Term. Gowen Fld-LHR London Heathrow

15h 08m1 stop Seattle/Tacoma Intl

£719Alaska Airlines

Fri, 11 Dec - Thu, 24 Dec

06:30 - 16:20LHR London Heathrow-BOI Boise Air Term. Gowen Fld

16h 50m2 stops Amsterdam Schiphol Seattle/Tacoma Intl

14:00 - 10:40BOI Boise Air Term. Gowen Fld-LHR London Heathrow

13h 40m1 stop Seattle/Tacoma Intl

£720Multiple Airlines

Thu, 4 Feb - Fri, 12 Feb

14:45 - 14:20LHR London Heathrow-BOI Boise Air Term. Gowen Fld

30h 35m1 stop Seattle/Tacoma Intl

12:00 - 12:20BOI Boise Air Term. Gowen Fld-LHR London Heathrow

17h 20m1 stop Seattle/Tacoma Intl

£722Alaska Airlines

Thu, 4 Feb - Fri, 12 Feb

06:30 - 18:03LHR London Heathrow-BOI Boise Air Term. Gowen Fld

18h 33m2 stops Frankfurt am Main Denver Intl

08:15 - 11:20BOI Boise Air Term. Gowen Fld-LHR London Heathrow

20h 05m2 stops San Francisco Toronto Pearson Intl

£731Lufthansa

Mon, 23 Nov - Sun, 6 Dec

07:30 - 18:09LHR London Heathrow-BOI Boise Air Term. Gowen Fld

17h 39m2 stops Frankfurt am Main Denver Intl

16:08 - 07:10BOI Boise Air Term. Gowen Fld-LHR London Heathrow

32h 02m2 stops San Francisco Montreal Pierre Elliott Trudeau Intl

£733United Airlines

Thu, 4 Feb - Fri, 12 Feb

12:15 - 23:10LHR London Heathrow-BOI Boise Air Term. Gowen Fld

17h 55m2 stops Reykjavik Keflavik Intl Denver Intl

07:30 - 10:50BOI Boise Air Term. Gowen Fld-LHR London Heathrow

20h 20m2 stops Denver Intl Reykjavik Keflavik Intl

£752Multiple Airlines

Fri, 5 Feb - Fri, 12 Feb

07:50 - 22:51LHR London Heathrow-BOI Boise Air Term. Gowen Fld

22h 01m1 stop Chicago O'Hare Intl

08:15 - 11:20BOI Boise Air Term. Gowen Fld-LHR London Heathrow

20h 05m2 stops San Francisco Toronto Pearson Intl

£756Lufthansa

Mon, 23 Nov - Sun, 6 Dec

12:20 - 18:38LHR London Heathrow-BOI Boise Air Term. Gowen Fld

13h 18m1 stop Seattle/Tacoma Intl

05:15 - 07:05BOI Boise Air Term. Gowen Fld-LHR London Heathrow

18h 50m1 stop Minneapolis St Paul

£900Virgin Atlantic

Thu, 10 Dec - Thu, 17 Dec

10:55 - 22:58LHR London Heathrow-BOI Boise Air Term. Gowen Fld

19h 03m1 stop Los Angeles

05:36 - 07:05BOI Boise Air Term. Gowen Fld-LHR London Heathrow

18h 29m1 stop Minneapolis St Paul

£903Virgin Atlantic

Mon, 14 Dec - Mon, 21 Dec

Cheap last-minute flights

Enter your travel dates to find the best prices.

06:40 - 23:04LHR London Heathrow-BOI Boise Air Term. Gowen Fld

23h 24m2 stops Kastrup Copenhagen Los Angeles

16:00 - 21:40BOI Boise Air Term. Gowen Fld-LHR London Heathrow

22h 40m2 stops Los Angeles Kastrup Copenhagen

£649Scandinavian Airlines

Wed, 4 Nov - Sun, 8 Nov

07:05 - 23:04LHR London Heathrow-BOI Boise Air Term. Gowen Fld

22h 59m3 stops Oslo Gardermoen Kastrup Copenhagen Los Angeles

16:00 - 21:35BOI Boise Air Term. Gowen Fld-LHR London Heathrow

22h 35m3 stops Los Angeles Kastrup Copenhagen Oslo Gardermoen

£655Scandinavian Airlines

Wed, 4 Nov - Sun, 8 Nov

12:15 - 22:35LHR London Heathrow-BOI Boise Air Term. Gowen Fld

17h 20m2 stops Reykjavik Keflavik Intl Denver Intl

11:15 - 10:50BOI Boise Air Term. Gowen Fld-LHR London Heathrow

16h 35m2 stops Denver Intl Reykjavik Keflavik Intl

£777Multiple Airlines

Wed, 4 Nov - Sun, 8 Nov

14:45 - 23:49LHR London Heathrow-BOI Boise Air Term. Gowen Fld

16h 04m1 stop Seattle/Tacoma Intl

10:49 - 12:20BOI Boise Air Term. Gowen Fld-LHR London Heathrow

18h 31m1 stop Seattle/Tacoma Intl

£789Alaska Airlines

Wed, 4 Nov - Sun, 8 Nov

14:45 - 09:07LHR London Heathrow-BOI Boise Air Term. Gowen Fld

25h 22m1 stop Seattle/Tacoma Intl

18:21 - 12:20BOI Boise Air Term. Gowen Fld-LHR London Heathrow

34h 59m1 stop Seattle/Tacoma Intl

£825Alaska Airlines

Thu, 5 Nov - Thu, 12 Nov

20:35 - 23:00LHR London Heathrow-BOI Boise Air Term. Gowen Fld

33h 25m2 stops Reykjavik Keflavik Intl Denver Intl

12:49 - 10:50BOI Boise Air Term. Gowen Fld-LHR London Heathrow

15h 01m2 stops Seattle/Tacoma Intl Reykjavik Keflavik Intl

£842Multiple Airlines

Thu, 5 Nov - Thu, 12 Nov

14:45 - 22:20LHR London Heathrow-BOI Boise Air Term. Gowen Fld

14h 35m1 stop Seattle/Tacoma Intl

08:21 - 12:20BOI Boise Air Term. Gowen Fld-LHR London Heathrow

20h 59m2 stops San Francisco Seattle/Tacoma Intl

£893Alaska Airlines

Wed, 4 Nov - Mon, 23 Nov

14:45 - 23:49LHR London Heathrow-BOI Boise Air Term. Gowen Fld

16h 04m1 stop Seattle/Tacoma Intl

08:21 - 12:20BOI Boise Air Term. Gowen Fld-LHR London Heathrow

20h 59m2 stops San Francisco Seattle/Tacoma Intl

£893Alaska Airlines

Mon, 2 Nov - Mon, 23 Nov

14:45 - 22:20LHR London Heathrow-BOI Boise Air Term. Gowen Fld

14h 35m1 stop Seattle/Tacoma Intl

08:21 - 12:20BOI Boise Air Term. Gowen Fld-LHR London Heathrow

20h 59m2 stops San Francisco Seattle/Tacoma Intl

£893Alaska Airlines

Thu, 5 Nov - Mon, 23 Nov

14:45 - 23:49LHR London Heathrow-BOI Boise Air Term. Gowen Fld

16h 04m1 stop Seattle/Tacoma Intl

08:21 - 12:20BOI Boise Air Term. Gowen Fld-LHR London Heathrow

20h 59m2 stops San Francisco Seattle/Tacoma Intl

£893Alaska Airlines

Tue, 3 Nov - Mon, 23 Nov

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United Airlines flights from London Heathrow Airport to Idaho

Our best United Airlines deals on London Heathrow Airport to Idaho flight tickets

United Airlines

5 Jan

LHR18:00London Heathrow

27h 52m

2 stops

BOI14:52Boise Air Term. Gowen Fld

12 Jan

BOI16:10Boise Air Term. Gowen Fld

30h 45m

2 stops

LHR05:55London Heathrow

£699

United Airlines

4 Feb

LHR07:30London Heathrow

17h 39m

2 stops

BOI18:09Boise Air Term. Gowen Fld

12 Feb

BOI16:08Boise Air Term. Gowen Fld

32h 02m

2 stops

LHR07:10London Heathrow

£733

United Airlines

27 Nov

LHR13:45London Heathrow

14h 30m

1 stop

BOI21:15Boise Air Term. Gowen Fld

4 Dec

BOI06:10Boise Air Term. Gowen Fld

22h 50m

2 stops

LHR12:00London Heathrow

£742

Icelandair flights from London Heathrow Airport to Idaho

Our best Icelandair deals on London Heathrow Airport to Idaho flight tickets

Icelandair

9 Nov

LHR12:15London Heathrow

18h 31m

2 stops

BOI23:46Boise Air Term. Gowen Fld

12 Nov

BOI12:49Boise Air Term. Gowen Fld

23h 41m

2 stops

LHR19:30London Heathrow

£770

Icelandair

21 Nov

LHR20:35London Heathrow

32h 37m

2 stops

BOI22:12Boise Air Term. Gowen Fld

28 Nov

BOI05:40Boise Air Term. Gowen Fld

30h 50m

2 stops

LHR19:30London Heathrow

£849

Icelandair

5 Nov

LHR12:15London Heathrow

17h 05m

2 stops

BOI22:20Boise Air Term. Gowen Fld

24 Nov

BOI10:52Boise Air Term. Gowen Fld

25h 38m

2 stops

LHR19:30London Heathrow

£981

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Tue 5/1

18:00-14:52

2 stops27h 52m

Boise Air Term. Gowen Fld

Tue 12/1

16:10-05:55

2 stops30h 45m

£699

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Fri 11/12

14:45-14:19

1 stop30h 34m

Boise Air Term. Gowen Fld

Thu 24/12

14:12-12:20

1 stop15h 08m

£719

Fastest return journey

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Thu 4/2

06:30-16:20

2 stops16h 50m

Boise Air Term. Gowen Fld

Fri 12/2

14:00-10:40

1 stop13h 40m

£720

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Thu 4/2

14:45-14:20

1 stop30h 35m

Boise Air Term. Gowen Fld

Fri 12/2

12:00-12:20

1 stop17h 20m

£722

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Mon 23/11

06:30-18:03

2 stops18h 33m

Boise Air Term. Gowen Fld

Sun 6/12

08:15-11:20

2 stops20h 05m

£731

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Thu 4/2

07:30-18:09

2 stops17h 39m

Boise Air Term. Gowen Fld

Fri 12/2

16:08-07:10

2 stops32h 02m

£733

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Fri 5/2

12:15-23:10

2 stops17h 55m

Boise Air Term. Gowen Fld

Fri 12/2

07:30-10:50

2 stops20h 20m

£752

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Mon 23/11

07:50-22:51

1 stop22h 01m

Boise Air Term. Gowen Fld

Sun 6/12

08:15-11:20

2 stops20h 05m

£756

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Thu 10/12

12:20-18:38

1 stop13h 18m

Boise Air Term. Gowen Fld

Thu 17/12

05:15-07:05

1 stop18h 50m

£900

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Mon 14/12

10:55-22:58

1 stop19h 03m

Boise Air Term. Gowen Fld

Mon 21/12

05:36-07:05

1 stop18h 29m

£903

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from London Heathrow Airport to Idaho

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to Idaho?

The month of February is, on average, the cheapest month to fly to Idaho from London Heathrow Airport, with most prices found around £0. If you’re not able to fly to Idaho in February, then March is your next best option. Flight prices from London Heathrow Airport to Idaho during March average around £637.

Can stopping save me money on London Heathrow Airport to Idaho flights?

You could potentially save up to 60% on your flight if you consider stops on a London Heathrow Airport to Idaho flight.

Cheap London Heathrow Airport to Idaho flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Idaho

Best price found	£403
Fastest flight time	14h 29m
Direct flights	None

The best one-way flight to Idaho from London Heathrow Airport in the past 72 hours is £403. The best return flight deal from London Heathrow Airport to Idaho found on momondo in the last 72 hours is £699.

The fastest flight from London Heathrow Airport to Idaho takes 14h 29m

There are no direct flights from London Heathrow Airport to Idaho. There are no popular flight routes from London Heathrow Airport to Idaho.

Search flight deals

Frequently asked questions about flying from London Heathrow Airport to Idaho

When did momondo last update prices for flights from London Heathrow Airport to Idaho?
Prices for flights from London Heathrow Airport to Idaho refresh daily.
How many operators does momondo search for flights from London Heathrow Airport to Idaho?
There are 4 operators available for flights from London Heathrow Airport to Idaho as of October 2026.
How old do you have to be to fly from London Heathrow Airport to Idaho?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Heathrow Airport to Idaho.
What documentation or ID do you need to fly to Idaho?
The travel and health documents you'll need for your trip to Idaho may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Idaho. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from London Heathrow Airport to Idaho

Compare and see reviews for airlines that fly from London Heathrow Airport to Idaho with momondo

Airline	Rating	Free Cancellation	Price
Lufthansa	PriceFrom £509	Free Cancellation	Rating 6.8 8,301 reviews	Search Lufthansa flights
United Airlines	PriceFrom £526	Free Cancellation	Rating 7.3 10,460 reviews	Search United Airlines flights
Alaska Airlines	PriceFrom £719	Free Cancellation	Rating 7.9 13,139 reviews	Search Alaska Airlines flights
Virgin Atlantic	PriceFrom £719	Free Cancellation	Rating 7.5 699 reviews	Search Virgin Atlantic flights

Why use momondo?

Why should I use momondo to find a flight deal from London to Idaho?

It is quick and easy to find London to Idaho flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Idaho that suits you.

Can I find flights from London to Idaho with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Idaho from London with this policy.

How can momondo help me find flights from London to Idaho?

momondo provides multiple filters to help you find the best flight to Idaho from London. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from London to Idaho right now. Can momondo alert me if prices change?

Yes. momondo can track prices for London to Idaho flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.