Which airlines fly to Idaho?

United Airlines, Virgin Atlantic and Lufthansa 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 40% 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?

United Airlines, Delta, and Lufthansa 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 September 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.

£373 Cheap Flights from London Heathrow Airport to Idaho in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from London Heathrow Airport to Idaho

Return

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

17:45 - 23:55LHR London Heathrow-GEG Spokane

14h 10m1 stop Seattle/Tacoma Intl

13:38 - 10:40GEG Spokane-LHR London Heathrow

14h 02m1 stop Seattle/Tacoma Intl

£546Multiple Airlines

Thu, 15 Oct - Wed, 28 Oct

11:45 - 23:55LHR London Heathrow-GEG Spokane

20h 10m2 stops Amsterdam Schiphol Seattle/Tacoma Intl

13:38 - 10:40GEG Spokane-LHR London Heathrow

14h 02m1 stop Seattle/Tacoma Intl

£592Multiple Airlines

Thu, 15 Oct - Wed, 28 Oct

14:45 - 18:11LHR London Heathrow-BOI Boise Air Term. Gowen Fld

34h 26m1 stop Seattle/Tacoma Intl

16:00 - 12:20BOI Boise Air Term. Gowen Fld-LHR London Heathrow

13h 20m1 stop Seattle/Tacoma Intl

£673Alaska Airlines

Thu, 4 Mar - Mon, 8 Mar

13:30 - 18:03LHR London Heathrow-BOI Boise Air Term. Gowen Fld

34h 33m2 stops Frankfurt am Main Denver Intl

19:10 - 09:40BOI Boise Air Term. Gowen Fld-LHR London Heathrow

31h 30m2 stops San Francisco Denver Intl

£676United Airlines

Tue, 27 Oct - Tue, 3 Nov

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

14h 35m1 stop Seattle/Tacoma Intl

06:00 - 12:20BOI Boise Air Term. Gowen Fld-LHR London Heathrow

23h 20m2 stops Portland Seattle/Tacoma Intl

£696Alaska Airlines

Thu, 4 Mar - Mon, 8 Mar

13:35 - 16:42LHR London Heathrow-BOI Boise Air Term. Gowen Fld

33h 07m2 stops Chicago O'Hare Intl San Francisco

14:51 - 09:40BOI Boise Air Term. Gowen Fld-LHR London Heathrow

11h 49m1 stop Denver Intl

£745United Airlines

Tue, 27 Oct - Tue, 3 Nov

17:10 - 23:44LHR London Heathrow-GEG Spokane

38h 34m2 stops Amsterdam Schiphol Salt Lake City

19:25 - 11:20GEG Spokane-LHR London Heathrow

31h 55m1 stop Seattle/Tacoma Intl

£752Virgin Atlantic

Mon, 5 Oct - Sun, 18 Oct

17:10 - 23:44LHR London Heathrow-GEG Spokane

38h 34m2 stops Amsterdam Schiphol Salt Lake City

17:38 - 06:20GEG Spokane-LHR London Heathrow

28h 42m2 stops Seattle/Tacoma Intl New York John F Kennedy Intl

£752Virgin Atlantic

Mon, 5 Oct - Sun, 18 Oct

14:10 - 11:21LHR London Heathrow-JAC Jackson Hole

28h 11m1 stop Chicago O'Hare Intl

07:00 - 09:40JAC Jackson Hole-LHR London Heathrow

19h 40m1 stop Denver Intl

£886Lufthansa

Wed, 7 Oct - Wed, 14 Oct

14:10 - 11:21LHR London Heathrow-JAC Jackson Hole

28h 11m1 stop Chicago O'Hare Intl

07:00 - 06:45JAC Jackson Hole-LHR London Heathrow

16h 45m2 stops Denver Intl Chicago O'Hare Intl

£886Lufthansa

Wed, 7 Oct - Wed, 14 Oct

Cheap last-minute flights

Enter your travel dates to find the best prices.

18:40 - 18:40LHR London Heathrow-BOI Boise Air Term. Gowen Fld

31h 00m2 stops Kastrup Copenhagen Seattle/Tacoma Intl

12:17 - 17:40BOI Boise Air Term. Gowen Fld-LHR London Heathrow

22h 23m2 stops Seattle/Tacoma Intl Kastrup Copenhagen

£794Scandinavian Airlines

Mon, 14 Sep - Tue, 22 Sep

14:30 - 23:00LHR London Heathrow-BOI Boise Air Term. Gowen Fld

15h 30m1 stop Los Angeles

18:47 - 17:35BOI Boise Air Term. Gowen Fld-LHR London Heathrow

15h 48m1 stop Los Angeles

£814Multiple Airlines

Wed, 16 Sep - Wed, 23 Sep

09:55 - 23:00LHR London Heathrow-BOI Boise Air Term. Gowen Fld

20h 05m1 stop Los Angeles

18:47 - 17:35BOI Boise Air Term. Gowen Fld-LHR London Heathrow

15h 48m1 stop Los Angeles

£814Multiple Airlines

Tue, 15 Sep - Thu, 24 Sep

17:00 - 23:44LHR London Heathrow-BOI Boise Air Term. Gowen Fld

13h 44m1 stop Seattle/Tacoma Intl

16:20 - 15:05BOI Boise Air Term. Gowen Fld-LHR London Heathrow

15h 45m1 stop Seattle/Tacoma Intl

£948Alaska Airlines

Thu, 17 Sep - Sun, 20 Sep

17:00 - 23:44LHR London Heathrow-BOI Boise Air Term. Gowen Fld

13h 44m1 stop Seattle/Tacoma Intl

13:31 - 15:05BOI Boise Air Term. Gowen Fld-LHR London Heathrow

18h 34m2 stops Portland Seattle/Tacoma Intl

£985Alaska Airlines

Wed, 16 Sep - Mon, 21 Sep

17:00 - 23:44LHR London Heathrow-BOI Boise Air Term. Gowen Fld

13h 44m1 stop Seattle/Tacoma Intl

14:42 - 15:05BOI Boise Air Term. Gowen Fld-LHR London Heathrow

17h 23m2 stops Spokane Seattle/Tacoma Intl

£985Alaska Airlines

Thu, 17 Sep - Sun, 20 Sep

11:25 - 17:58LHR London Heathrow-BOI Boise Air Term. Gowen Fld

13h 33m1 stop Denver Intl

06:30 - 06:45BOI Boise Air Term. Gowen Fld-LHR London Heathrow

17h 15m2 stops Denver Intl Chicago O'Hare Intl

£1,016United Airlines

Tue, 15 Sep - Mon, 21 Sep

12:00 - 23:03LHR London Heathrow-BOI Boise Air Term. Gowen Fld

18h 03m2 stops Newark Denver Intl

17:30 - 12:25BOI Boise Air Term. Gowen Fld-LHR London Heathrow

11h 55m1 stop Denver Intl

£1,016United Airlines

Tue, 15 Sep - Thu, 24 Sep

12:00 - 23:03LHR London Heathrow-BOI Boise Air Term. Gowen Fld

18h 03m2 stops Newark Denver Intl

17:40 - 12:35BOI Boise Air Term. Gowen Fld-LHR London Heathrow

11h 55m1 stop Denver Intl

£1,016United Airlines

Tue, 15 Sep - Wed, 23 Sep

09:20 - 22:00LHR London Heathrow-BOI Boise Air Term. Gowen Fld

19h 40m1 stop Atlanta Hartsfield-Jackson

11:03 - 10:00BOI Boise Air Term. Gowen Fld-LHR London Heathrow

15h 57m1 stop Salt Lake City

£1,064Virgin Atlantic

Mon, 14 Sep - Mon, 21 Sep

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Scandinavian Airlines flights from London Heathrow Airport to Idaho

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

Scandinavian Airlines

21 Sept

LHR19:30London Heathrow

34h 04m

2 stops

BOI22:34Boise Air Term. Gowen Fld

6 Oct

BOI10:34Boise Air Term. Gowen Fld

24h 06m

2 stops

LHR17:40London Heathrow

£678

Scandinavian Airlines

14 Sept

LHR18:40London Heathrow

31h 00m

2 stops

BOI18:40Boise Air Term. Gowen Fld

22 Sept

BOI12:17Boise Air Term. Gowen Fld

22h 23m

2 stops

LHR17:40London Heathrow

£794

Scandinavian Airlines

21 Sept

LHR21:05London Heathrow

28h 35m

3 stops

BOI18:40Boise Air Term. Gowen Fld

6 Oct

BOI12:08Boise Air Term. Gowen Fld

26h 32m

2 stops

LHR21:40London Heathrow

£850

Icelandair flights from London Heathrow Airport to Idaho

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

Icelandair

17 Sept

LHR13:05London Heathrow

40h 33m

2 stops

BOI22:38Boise Air Term. Gowen Fld

21 Sept

BOI13:15Boise Air Term. Gowen Fld

15h 40m

2 stops

LHR11:55London Heathrow

£901

Icelandair

16 Sept

LHR21:25London Heathrow

56h 13m

2 stops

BOI22:38Boise Air Term. Gowen Fld

21 Sept

BOI13:15Boise Air Term. Gowen Fld

15h 40m

2 stops

LHR11:55London Heathrow

£902

Icelandair

17 Sept

LHR13:05London Heathrow

40h 33m

2 stops

BOI22:38Boise Air Term. Gowen Fld

20 Sept

BOI10:00Boise Air Term. Gowen Fld

18h 55m

2 stops

LHR11:55London Heathrow

£1,013

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

Fastest return journey

LondonSpokane

LHR London Heathrow - GEG Spokane

LHRGEG

London Heathrow

Thu 15/10

17:45-23:55

1 stop14h 10m

Spokane

Wed 28/10

13:38-10:40

1 stop14h 02m

£546

LondonSpokane

LHR London Heathrow - GEG Spokane

LHRGEG

London Heathrow

Thu 15/10

11:45-23:55

2 stops20h 10m

Spokane

Wed 28/10

13:38-10:40

1 stop14h 02m

£592

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Thu 4/3

14:45-18:11

1 stop34h 26m

Boise Air Term. Gowen Fld

Mon 8/3

16:00-12:20

1 stop13h 20m

£673

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Tue 27/10

13:30-18:03

2 stops34h 33m

Boise Air Term. Gowen Fld

Tue 3/11

19:10-09:40

2 stops31h 30m

£676

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Thu 4/3

14:45-22:20

1 stop14h 35m

Boise Air Term. Gowen Fld

Mon 8/3

06:00-12:20

2 stops23h 20m

£696

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Tue 27/10

13:35-16:42

2 stops33h 07m

Boise Air Term. Gowen Fld

Tue 3/11

14:51-09:40

1 stop11h 49m

£745

LondonSpokane

LHR London Heathrow - GEG Spokane

LHRGEG

London Heathrow

Mon 5/10

17:10-23:44

2 stops38h 34m

Spokane

Sun 18/10

19:25-11:20

1 stop31h 55m

£752

LondonSpokane

LHR London Heathrow - GEG Spokane

LHRGEG

London Heathrow

Mon 5/10

17:10-23:44

2 stops38h 34m

Spokane

Sun 18/10

17:38-06:20

2 stops28h 42m

£752

LondonJackson

LHR London Heathrow - JAC Jackson Hole

LHRJAC

London Heathrow

Wed 7/10

14:10-11:21

1 stop28h 11m

Jackson Hole

Wed 14/10

07:00-09:40

1 stop19h 40m

£886

LondonJackson

LHR London Heathrow - JAC Jackson Hole

LHRJAC

London Heathrow

Wed 7/10

14:10-11:21

1 stop28h 11m

Jackson Hole

Wed 14/10

07:00-06:45

2 stops16h 45m

£886

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 March is, on average, the cheapest month to fly to Idaho from London Heathrow Airport, with most prices found around £631. If you’re not able to fly to Idaho in March, then November is your next best option. Flight prices from London Heathrow Airport to Idaho during November average around £656.

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

You could potentially save up to 57% 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	£373
Fastest flight time	14h 18m
Direct flights	None

The best one-way flight to Idaho from London Heathrow Airport in the past 72 hours is £373. The best return flight deal from London Heathrow Airport to Idaho found on momondo in the last 72 hours is £546.

The fastest flight from London Heathrow Airport to Idaho takes 14h 18m

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 September 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 £504	Free Cancellation	Rating 6.8 8,222 reviews	Search Lufthansa flights
United Airlines	PriceFrom £521	Free Cancellation	Rating 7.4 10,211 reviews	Search United Airlines flights
Virgin Atlantic	PriceFrom £669	Free Cancellation	Rating 7.4 694 reviews	Search Virgin Atlantic flights
Alaska Airlines	PriceFrom £729	Free Cancellation	Rating 7.9 12,915 reviews	Search Alaska Airlines 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.