Which airlines fly to Idaho?

United Airlines, Virgin Atlantic and KLM are the top three most popular airlines that fly to Idaho from United Kingdom according to our data. United Airlines is the first choice among our users, with 43% of people opting to fly with this airline when travelling to Idaho. Keep in mind that there are 7 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 United Kingdom to Idaho?

Lufthansa, United Airlines, and Delta are the most popular carriers operating from United Kingdom to Idaho

How long is the flight from United Kingdom to Idaho?

Flight times from United Kingdom to Idaho vary, but if you’re flying out of London and flying into Boise (one of the most popular routes), then the duration is 14h 57m on average. Another popular route from United Kingdom to Idaho is flying from Edinburgh to Boise, which will take roughly 17h 23m. Keep in mind that layovers or delays could extend your travel time.

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

Prices for flights from United Kingdom to Idaho are updated daily.

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

There are 7 operators available for flights from United Kingdom to Idaho as of May 2026.

How old do you have to be to fly from United Kingdom 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 United Kingdom to Idaho.

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

The necessary travel and health documents for your Idaho trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

£363 Cheap Flights from the United Kingdom to Idaho in 2026

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Find the cheapest flights from the United Kingdom to Idaho

Round-trip

One-way

Last minute

Recent return flight deals from the United Kingdom to Idaho

Enter your travel dates to find the best prices.

11:10 - 23:05

LHR

BOI

18h 55m

2 stops

10:39 - 07:30

BOI

LHR

37h 51m

2 stops

£660United Airlines

Wed, 4 Nov - Sun, 8 Nov

08:30 - 23:00

LHR

BOI

21h 30m

2 stops

07:26 - 10:00

BOI

LHR

19h 34m

2 stops

£679Multiple Airlines

Sat, 26 Sep - Sat, 10 Oct

20:25 - 21:14

LHR

GEG

32h 49m

2 stops

12:50 - 07:25

GEG

LHR

34h 35m

1 stop

£687Lufthansa

Sun, 20 Sep - Sun, 18 Oct

17:00 - 15:35

LHR

IDA

29h 35m

1 stop

13:46 - 15:05

IDA

LHR

18h 19m

1 stop

£716Alaska Airlines

Mon, 5 Oct - Wed, 14 Oct

11:25 - 17:58

LHR

BOI

13h 33m

1 stop

12:29 - 11:55

BOI

LHR

16h 26m

1 stop

£718Lufthansa

Sat, 26 Sep - Sat, 10 Oct

17:00 - 15:35

LHR

IDA

29h 35m

1 stop

13:46 - 15:05

IDA

LHR

18h 19m

1 stop

£747Alaska Airlines

Sun, 4 Oct - Wed, 14 Oct

21:25 - 21:18

LHR

GEG

31h 53m

2 stops

19:45 - 20:20

GEG

LHR

40h 35m

2 stops

£764Icelandair

Mon, 8 Jun - Tue, 7 Jul

21:25 - 21:18

LHR

GEG

31h 53m

2 stops

19:45 - 20:20

GEG

LHR

16h 35m

2 stops

£766Icelandair

Mon, 8 Jun - Tue, 7 Jul

10:55 - 22:09

LHR

SUN

18h 14m

1 stop

13:10 - 15:35

SUN

LHR

19h 25m

2 stops

£934KLM

Thu, 25 Jun - Thu, 2 Jul

10:55 - 22:09

LHR

SUN

18h 14m

1 stop

13:10 - 15:35

SUN

LHR

19h 25m

2 stops

£937KLM

Thu, 25 Jun - Thu, 2 Jul

KLM flights from United Kingdom to Idaho

Our best KLM deals on United Kingdom to Idaho flight tickets

KLM

23 Jun

LHR11:45London Heathrow

19h 24m

2 stops

BOI00:09Boise Air Term. Gowen Fld

28 Jun

BOI14:04Boise Air Term. Gowen Fld

33h 21m

1 stop

LHR06:25London Heathrow

£905

KLM

25 Jun

LHR10:55London Heathrow

18h 14m

1 stop

SUN22:09Hailey Sun Valley-Friedman

2 Jul

SUN13:10Hailey Sun Valley-Friedman

19h 25m

2 stops

LHR15:35London Heathrow

£934

KLM

8 Jun

LHR11:45London Heathrow

20h 14m

2 stops

GEG23:59Spokane

7 Jul

GEG16:30Spokane

15h 05m

1 stop

LHR15:35London Heathrow

£1,027

Virgin Atlantic flights from United Kingdom to Idaho

Our best Virgin Atlantic deals on United Kingdom to Idaho flight tickets

Virgin Atlantic

23 Jun

LHR12:25London Heathrow

18h 22m

1 stop

BOI23:47Boise Air Term. Gowen Fld

5 Jul

BOI19:53Boise Air Term. Gowen Fld

33h 12m

1 stop

LHR12:05London Heathrow

£869

Virgin Atlantic

22 Jun

LHR14:30London Heathrow

15h 34m

1 stop

BOI23:04Boise Air Term. Gowen Fld

28 Jun

BOI18:10Boise Air Term. Gowen Fld

34h 55m

1 stop

LHR12:05London Heathrow

£879

Virgin Atlantic

23 Jun

LHR09:55London Heathrow

19h 36m

2 stops

IDA22:31Idaho Falls Fanning Field

30 Jun

IDA15:25Idaho Falls Fanning Field

12h 35m

1 stop

LHR11:00London Heathrow

£884

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Wed 4/11

11:10-23:05

2 stops18h 55m

Boise Air Term. Gowen Fld

Sun 8/11

10:39-07:30

2 stops37h 51m

£660

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Sat 26/9

08:30-23:00

2 stops21h 30m

Boise Air Term. Gowen Fld

Sat 10/10

07:26-10:00

2 stops19h 34m

£679

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Sun 20/9

20:25-21:14

2 stops32h 49m

Spokane

Sun 18/10

12:50-07:25

1 stop34h 35m

£687

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Mon 5/10

17:00-15:35

1 stop29h 35m

Idaho Falls Fanning Field

Wed 14/10

13:46-15:05

1 stop18h 19m

£716

Fastest return journey

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Sat 26/9

11:25-17:58

1 stop13h 33m

Boise Air Term. Gowen Fld

Sat 10/10

12:29-11:55

1 stop16h 26m

£718

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sun 4/10

17:00-15:35

1 stop29h 35m

Idaho Falls Fanning Field

Wed 14/10

13:46-15:05

1 stop18h 19m

£747

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Mon 8/6

21:25-21:18

2 stops31h 53m

Spokane

Tue 7/7

19:45-20:20

2 stops40h 35m

£764

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Mon 8/6

21:25-21:18

2 stops31h 53m

Spokane

Tue 7/7

19:45-20:20

2 stops16h 35m

£766

LondonHailey

LHR - SUN

LHRSUN

London Heathrow

Thu 25/6

10:55-22:09

1 stop18h 14m

Hailey Sun Valley-Friedman

Thu 2/7

13:10-15:35

2 stops19h 25m

£934

LondonHailey

LHR - SUN

LHRSUN

London Heathrow

Thu 25/6

10:55-22:09

1 stop18h 14m

Hailey Sun Valley-Friedman

Thu 2/7

13:10-15:35

2 stops19h 25m

£937

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 United Kingdom 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

Other information

What is the cheapest month to fly to Idaho?

The month of January is, on average, the cheapest month to fly to Idaho from United Kingdom, with most prices found around £501. If you’re not able to fly to Idaho in January, then March is your next best option. Flight prices from United Kingdom to Idaho during March average around £507.

Can stopping save me money on United Kingdom to Idaho flights?

You could potentially save up to 14% on your flight if you consider stops on a United Kingdom to Idaho flight.

Cheap United Kingdom to Idaho flight deals and tips

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

Fastest flight time	16h 10m
Direct flights	None

The fastest flight from United Kingdom to Idaho takes 16h 10m

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

Search flight deals

Frequently asked questions about flying from the United Kingdom to Idaho

When did momondo last update prices for flights from United Kingdom to Idaho?
Prices for flights from United Kingdom to Idaho are updated daily.
How many operators does momondo search for flights from United Kingdom to Idaho?
There are 7 operators available for flights from United Kingdom to Idaho as of May 2026.
How old do you have to be to fly from United Kingdom 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 United Kingdom to Idaho.
What documentation or ID do you need to fly to Idaho?
The necessary travel and health documents for your Idaho trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from United Kingdom to Idaho

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

Airline	Rating	Free Cancellation	Price
Lufthansa	PriceFrom £507	Free Cancellation	Rating 6.8 8,032 reviews	Search Lufthansa flights
United Airlines	PriceFrom £546	Free Cancellation	Rating 7.4 9,757 reviews	Search United Airlines flights
Virgin Atlantic	PriceFrom £599	Free Cancellation	Rating 7.5 689 reviews	Search Virgin Atlantic flights
KLM	PriceFrom £654	Free Cancellation	Rating 7.8 1,525 reviews	Search KLM flights
Icelandair	PriceFrom £699	Free Cancellation	Rating 7.0 661 reviews	Search Icelandair flights
Alaska Airlines	PriceFrom £834	Free Cancellation	Rating 7.9 12,429 reviews	Search Alaska Airlines flights
Delta	PriceFrom £1,036	Free Cancellation	Rating 7.9 8,422 reviews	Search Delta flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from United Kingdom to Idaho. momondo saves you time and could save you money on your trip.

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

momondo does allow users to show only those flights to Idaho from United Kingdom which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from United Kingdom 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 United Kingdom to Idaho.

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

Yes. momondo can track prices for United Kingdom 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.