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 46% of people opting to fly with this airline when travelling to Idaho. Keep in mind that there are 3 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?

United Airlines, Lufthansa, and Icelandair 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 March 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.

£310 Cheap Flights from London to Idaho in 2026

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Find the cheapest flights from London to Idaho

Round-trip

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

13:00 - 21:17

LHR

BOI

15h 17m

1 stop

08:34 - 06:45

BOI

LHR

15h 11m

1 stop

£506United Airlines

Mon, 27 Apr - Sun, 3 May

17:45 - 22:50

LHR

GEG

13h 05m

1 stop

15:30 - 15:35

GEG

LHR

16h 05m

1 stop

£590Delta

Tue, 31 Mar - Mon, 20 Apr

06:30 - 21:35

LHR

GEG

23h 05m

2 stops

12:25 - 14:10

GEG

LHR

17h 45m

1 stop

£605Lufthansa

Mon, 27 Apr - Mon, 4 May

07:30 - 21:35

LHR

GEG

22h 05m

2 stops

12:25 - 17:40

GEG

LHR

21h 15m

2 stops

£608Lufthansa

Mon, 27 Apr - Mon, 4 May

15:40 - 21:31

LGW

GEG

37h 51m

2 stops

09:55 - 14:40

GEG

LGW

20h 45m

2 stops

£752Icelandair

Mon, 27 Apr - Mon, 4 May

15:40 - 21:31

LGW

GEG

37h 51m

2 stops

06:00 - 14:40

GEG

LGW

24h 40m

2 stops

£753Icelandair

Sat, 2 May - Sat, 9 May

11:45 - 21:42

LHR

SUN

16h 57m

2 stops

15:34 - 06:45

SUN

LHR

32h 11m

2 stops

£758Virgin Atlantic

Wed, 29 Apr - Wed, 6 May

10:55 - 21:42

LHR

SUN

17h 47m

1 stop

15:34 - 13:15

SUN

LHR

14h 41m

2 stops

£767Virgin Atlantic

Wed, 29 Apr - Wed, 6 May

06:30 - 22:14

LHR

IDA

22h 44m

2 stops

18:50 - 10:00

IDA

LHR

32h 10m

1 stop

£812KLM

Tue, 1 Sep - Fri, 25 Sep

20:55 - 18:14

LHR

IDA

28h 19m

2 stops

18:50 - 10:00

IDA

LHR

32h 10m

1 stop

£825KLM

Tue, 1 Sep - Fri, 25 Sep

United Airlines flights from London to Idaho

Our best United Airlines deals on London to Idaho flight tickets

United Airlines

27 Apr

LHR13:00London Heathrow

15h 17m

1 stop

BOI21:17Boise Air Term. Gowen Fld

3 May

BOI08:34Boise Air Term. Gowen Fld

15h 11m

1 stop

LHR06:45London Heathrow

£506

United Airlines

4 May

LHR08:40London Heathrow

21h 00m

2 stops

GEG21:40Spokane

10 May

GEG16:10Spokane

33h 30m

1 stop

LHR09:40London Heathrow

£612

United Airlines

20 Apr

LHR07:25London Heathrow

19h 28m

2 stops

BOI19:53Boise Air Term. Gowen Fld

27 Apr

BOI06:15Boise Air Term. Gowen Fld

18h 00m

2 stops

LHR07:15London Heathrow

£615

Lufthansa flights from London to Idaho

Our best Lufthansa deals on London to Idaho flight tickets

Lufthansa

27 Apr

LHR06:30London Heathrow

23h 05m

2 stops

GEG21:35Spokane

4 May

GEG12:25Spokane

17h 45m

1 stop

LHR14:10London Heathrow

£605

Lufthansa

27 Apr

LHR07:30London Heathrow

22h 05m

2 stops

GEG21:35Spokane

4 May

GEG12:25Spokane

21h 15m

2 stops

LHR17:40London Heathrow

£608

Lufthansa

27 Apr

LHR06:55London Heathrow

22h 16m

2 stops

GEG21:11Spokane

4 May

GEG12:25Spokane

14h 45m

1 stop

LHR11:10London Heathrow

£609

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Mon 27/4

13:00-21:17

1 stop15h 17m

Boise Air Term. Gowen Fld

Sun 3/5

08:34-06:45

1 stop15h 11m

£506

Fastest return journey

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Tue 31/3

17:45-22:50

1 stop13h 05m

Spokane

Mon 20/4

15:30-15:35

1 stop16h 05m

£590

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Mon 27/4

06:30-21:35

2 stops23h 05m

Spokane

Mon 4/5

12:25-14:10

1 stop17h 45m

£605

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Mon 27/4

07:30-21:35

2 stops22h 05m

Spokane

Mon 4/5

12:25-17:40

2 stops21h 15m

£608

LondonSpokane

LGW - GEG

LGWGEG

London Gatwick

Mon 27/4

15:40-21:31

2 stops37h 51m

Spokane

Mon 4/5

09:55-14:40

2 stops20h 45m

£752

LondonSpokane

LGW - GEG

LGWGEG

London Gatwick

Sat 2/5

15:40-21:31

2 stops37h 51m

Spokane

Sat 9/5

06:00-14:40

2 stops24h 40m

£753

LondonHailey

LHR - SUN

LHRSUN

London Heathrow

Wed 29/4

11:45-21:42

2 stops16h 57m

Hailey Sun Valley-Friedman

Wed 6/5

15:34-06:45

2 stops32h 11m

£758

LondonHailey

LHR - SUN

LHRSUN

London Heathrow

Wed 29/4

10:55-21:42

1 stop17h 47m

Hailey Sun Valley-Friedman

Wed 6/5

15:34-13:15

2 stops14h 41m

£767

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 1/9

06:30-22:14

2 stops22h 44m

Idaho Falls Fanning Field

Fri 25/9

18:50-10:00

1 stop32h 10m

£812

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 1/9

20:55-18:14

2 stops28h 19m

Idaho Falls Fanning Field

Fri 25/9

18:50-10:00

1 stop32h 10m

£825

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 £565. If you’re not able to fly to Idaho in January, then September is your next best option. Flight prices from London to Idaho during September average around £593.

Can stopping save me money on London to Idaho flights?

You could potentially save up to 56% 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	13h 45m
Direct flights	None

The fastest flight from London to Idaho takes 13h 45m

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

Search flight deals

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 March 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 £511	Free Cancellation	Rating 6.8 7,858 reviews	Search Lufthansa flights
United Airlines	PriceFrom £550	Free Cancellation	Rating 7.4 9,435 reviews	Search United Airlines flights
Virgin Atlantic	PriceFrom £604	Free Cancellation	Rating 7.5 682 reviews	Search Virgin Atlantic 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.