Which airlines fly to Idaho?

United Airlines, Virgin Atlantic and Lufthansa are the top three most popular airlines that fly to Idaho from London according to our data. United Airlines is the first choice among our users, with 44% 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 to Idaho?

Alaska Airlines, Lufthansa, and Delta are the most popular carriers operating from London to Idaho

When did momondo last update prices for flights from London to Idaho?

Prices for flights from London to Idaho are refreshed on a daily basis.

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

As of August 2026, there are 4 operators available to choose from for flights from London to Idaho.

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

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London to Idaho.

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

The required travel and health documents for your Idaho trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Idaho. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

£409 Cheap Flights from London to Idaho in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from London to Idaho

Return

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

06:40 - 18:40

LHR

BOI

19h 00m

2 stops

16:00 - 16:00

BOI

LHR

41h 00m

2 stops

£565Scandinavian Airlines

Fri, 11 Sep - Fri, 18 Sep

06:40 - 17:09

LHR

GEG

18h 29m

2 stops

11:10 - 16:00

GEG

LHR

20h 50m

2 stops

£566Scandinavian Airlines

Sat, 12 Sep - Sat, 19 Sep

11:05 - 22:51

LHR

BOI

41h 46m

2 stops

12:00 - 05:55

BOI

LHR

34h 55m

2 stops

£667United Airlines

Tue, 27 Oct - Tue, 10 Nov

08:00 - 23:59

LHR

BOI

22h 59m

2 stops

06:25 - 07:15

BOI

LHR

17h 50m

2 stops

£678United Airlines

Tue, 6 Oct - Tue, 13 Oct

20:55 - 17:09

LHR

GEG

28h 14m

2 stops

13:59 - 10:20

GEG

LHR

12h 21m

1 stop

£713Virgin Atlantic

Tue, 8 Sep - Tue, 6 Oct

20:55 - 22:54

LHR

GEG

33h 59m

2 stops

19:30 - 15:35

GEG

LHR

12h 05m

1 stop

£715Virgin Atlantic

Tue, 8 Sep - Wed, 16 Sep

11:25 - 21:45

LHR

BOI

17h 20m

1 stop

10:31 - 09:40

BOI

LHR

16h 09m

1 stop

£724Lufthansa

Tue, 15 Sep - Tue, 22 Sep

08:00 - 22:58

LHR

BOI

21h 58m

1 stop

08:08 - 11:55

BOI

LHR

20h 47m

1 stop

£744Lufthansa

Tue, 6 Oct - Tue, 13 Oct

17:00 - 15:20

LHR

IDA

29h 20m

1 stop

14:01 - 15:05

IDA

LHR

18h 04m

1 stop

£759Alaska Airlines

Tue, 1 Sep - Fri, 25 Sep

14:45 - 22:06

LHR

BOI

13h 21m

1 stop

16:21 - 12:20

BOI

LHR

12h 59m

1 stop

£786Alaska Airlines

Tue, 27 Oct - Tue, 10 Nov

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United Airlines flights from London to Idaho

Our best United Airlines deals on London to Idaho flight tickets

United Airlines

27 Oct

LHR11:05London Heathrow

41h 46m

2 stops

BOI22:51Boise Air Term. Gowen Fld

10 Nov

BOI12:00Boise Air Term. Gowen Fld

34h 55m

2 stops

LHR05:55London Heathrow

£667

United Airlines

6 Oct

LHR08:00London Heathrow

22h 59m

2 stops

BOI23:59Boise Air Term. Gowen Fld

13 Oct

BOI14:20Boise Air Term. Gowen Fld

13h 50m

1 stop

LHR11:10London Heathrow

£678

United Airlines

8 Sept

LHR14:50London Heathrow

36h 01m

2 stops

GEG18:51Spokane

16 Sept

GEG05:00Spokane

16h 55m

2 stops

LHR05:55London Heathrow

£679

Scandinavian Airlines flights from London to Idaho

Our best Scandinavian Airlines deals on London to Idaho flight tickets

Scandinavian Airlines

11 Sept

LHR06:40London Heathrow

19h 00m

2 stops

BOI18:40Boise Air Term. Gowen Fld

18 Sept

BOI16:00Boise Air Term. Gowen Fld

41h 00m

2 stops

LHR16:00London Heathrow

£565

Scandinavian Airlines

12 Sept

LHR06:40London Heathrow

18h 29m

2 stops

GEG17:09Spokane

19 Sept

GEG11:10Spokane

20h 50m

2 stops

LHR16:00London Heathrow

£566

Scandinavian Airlines

11 Sept

LHR06:40London Heathrow

22h 54m

2 stops

BOI22:34Boise Air Term. Gowen Fld

26 Sept

BOI10:34Boise Air Term. Gowen Fld

24h 06m

2 stops

LHR17:40London Heathrow

£574

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 11/9

06:40-18:40

2 stops19h 00m

Boise Air Term. Gowen Fld

Fri 18/9

16:00-16:00

2 stops41h 00m

£565

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Sat 12/9

06:40-17:09

2 stops18h 29m

Spokane

Sat 19/9

11:10-16:00

2 stops20h 50m

£566

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Tue 27/10

11:05-22:51

2 stops41h 46m

Boise Air Term. Gowen Fld

Tue 10/11

12:00-05:55

2 stops34h 55m

£667

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Tue 6/10

08:00-23:59

2 stops22h 59m

Boise Air Term. Gowen Fld

Tue 13/10

06:25-07:15

2 stops17h 50m

£678

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Tue 8/9

20:55-17:09

2 stops28h 14m

Spokane

Tue 6/10

13:59-10:20

1 stop12h 21m

£713

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Tue 8/9

20:55-22:54

2 stops33h 59m

Spokane

Wed 16/9

19:30-15:35

1 stop12h 05m

£715

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Tue 15/9

11:25-21:45

1 stop17h 20m

Boise Air Term. Gowen Fld

Tue 22/9

10:31-09:40

1 stop16h 09m

£724

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Tue 6/10

08:00-22:58

1 stop21h 58m

Boise Air Term. Gowen Fld

Tue 13/10

08:08-11:55

1 stop20h 47m

£744

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 1/9

17:00-15:20

1 stop29h 20m

Idaho Falls Fanning Field

Fri 25/9

14:01-15:05

1 stop18h 04m

£759

Fastest return journey

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Tue 27/10

14:45-22:06

1 stop13h 21m

Boise Air Term. Gowen Fld

Tue 10/11

16:21-12:20

1 stop12h 59m

£786

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 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 January is, on average, the cheapest month to fly to Idaho from London, with most prices found around £568. If you’re not able to fly to Idaho in January, then April is your next best option. Flight prices from London to Idaho during April average around £626.

Can stopping save me money on London to Idaho flights?

You could potentially save up to 62% on your flight if you consider stops on a London to Idaho flight.

Cheap London to Idaho flight deals and tips

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

Fastest flight time	12h 50m
Direct flights	None

The fastest flight from London to Idaho takes 12h 50m

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

Search flight deals

Frequently asked questions about flying from London to Idaho

When did momondo last update prices for flights from London to Idaho?
Prices for flights from London to Idaho are refreshed on a daily basis.
How many operators does momondo search for flights from London to Idaho?
As of August 2026, there are 4 operators available to choose from for flights from London to Idaho.
How old do you have to be to fly from London to Idaho?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London to Idaho.
What documentation or ID do you need to fly to Idaho?
The required travel and health documents for your Idaho trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Idaho. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from London to Idaho

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

Airline	Rating	Free Cancellation	Price
Lufthansa	PriceFrom £507	Free Cancellation	Rating 6.8 8,168 reviews	Search Lufthansa flights
United Airlines	PriceFrom £551	Free Cancellation	Rating 7.4 10,062 reviews	Search United Airlines flights
Virgin Atlantic	PriceFrom £598	Free Cancellation	Rating 7.5 694 reviews	Search Virgin Atlantic flights
Alaska Airlines	PriceFrom £733	Free Cancellation	Rating 7.9 12,742 reviews	Search Alaska Airlines flights

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Idaho from London.

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

Yes. All flights to Idaho from London on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from London to Idaho.

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

Of course. momondo tracks the price of London to Idaho flights. All you need is a valid email address and we will do the rest; it is that quick and easy.