What is the cheapest airline that flies from United Kingdom to Idaho?

WestJet, Lufthansa, and Icelandair are the most popular carriers operating from United Kingdom to Idaho

Which airlines fly to Idaho?

United Airlines, Virgin Atlantic and Lufthansa 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 31% of people opting to fly with this airline when travelling to Idaho. Keep in mind that there are 10 different airlines that fly to Idaho on a routine basis, so you have a few additional options to choose from.

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 15h 25m on average. Another popular route from United Kingdom to Idaho is flying from Edinburgh to Boise, which will take roughly 18h 11m. 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 11 operators available for flights from United Kingdom to Idaho as of August 2025.

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.

£317 Cheap Flights from the United Kingdom to Idaho in 2025

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Find the cheapest flights from the United Kingdom to Idaho

Round-trip

One-way

Recent return flight deals from the United Kingdom to Idaho

10:55 - 22:25LGW-GEG

19h 30m1 stop

06:25 - 10:55GEG-LGW

20h 30m1 stop

£472

Find Deal

Wed, 10 Sep - Wed, 17 Sep

10:55 - 12:46LGW-GEG

33h 51m2 stops

06:25 - 10:55GEG-LGW

20h 30m1 stop

£499

Find Deal

Wed, 10 Sep - Wed, 17 Sep

10:45 - 22:54LGW-BOI

19h 09m1 stop

20:27 - 10:55BOI-LGW

31h 28m1 stop

£512

Find Deal

Sat, 30 Aug - Sat, 6 Sep

07:25 - 21:03LHR-GEG

21h 38m2 stops

12:35 - 10:25GEG-LHR

13h 50m1 stop

£518Lufthansa

Find Deal

Wed, 10 Sep - Wed, 17 Sep

07:25 - 23:05LHR-GEG

23h 40m2 stops

16:00 - 20:40GEG-LHR

20h 40m2 stops

£522United Airlines

Find Deal

Sun, 14 Sep - Sun, 21 Sep

11:25 - 21:03LHR-GEG

17h 38m1 stop

07:23 - 10:25GEG-LHR

19h 02m1 stop

£540Lufthansa

Find Deal

Wed, 10 Sep - Wed, 17 Sep

13:05 - 23:05LHR-GEG

18h 00m2 stops

05:15 - 05:55GEG-LHR

16h 40m2 stops

£543United Airlines

Find Deal

Mon, 15 Sep - Mon, 22 Sep

13:25 - 20:16LHR-BOI

13h 51m1 stop

16:46 - 14:15BOI-LHR

14h 29m1 stop

£620Virgin Atlantic

Find Deal

Mon, 6 Oct - Mon, 13 Oct

10:00 - 23:59LCY-BOI

20h 59m2 stops

16:20 - 19:40BOI-LCY

20h 20m2 stops

£815Virgin Atlantic

Find Deal

Sat, 13 Sep - Sat, 20 Sep

06:30 - 14:45LHR-GEG

16h 15m2 stops

13:00 - 09:50GEG-LHR

12h 50m1 stop

£1,045KLM

Find Deal

Mon, 11 Aug - Fri, 22 Aug

Icelandair flights from United Kingdom to Idaho

Our best Icelandair deals on United Kingdom to Idaho flight tickets

Icelandair

27 Aug

LHR13:05London Heathrow

18h 06m

2 stops

GEG23:11Spokane

3 Sept

GEG20:51Spokane

39h 29m

2 stops

LHR20:20London Heathrow

£604

Find similar

Icelandair

27 Aug

LGW15:35London Gatwick

38h 05m

2 stops

BOI22:40Boise Air Term. Gowen Fld

3 Sept

BOI11:22Boise Air Term. Gowen Fld

17h 23m

2 stops

LGW11:45London Gatwick

£608

Find similar

Icelandair

27 Aug

LHR13:05London Heathrow

16h 35m

2 stops

BOI22:40Boise Air Term. Gowen Fld

3 Sept

BOI11:22Boise Air Term. Gowen Fld

17h 33m

2 stops

LHR11:55London Heathrow

£611

Find similar

Air Canada flights from United Kingdom to Idaho

Our best Air Canada deals on United Kingdom to Idaho flight tickets

Air Canada

28 Oct

LHR15:00London Heathrow

38h 28m

2 stops

BOI23:28Boise Air Term. Gowen Fld

10 Nov

BOI14:31Boise Air Term. Gowen Fld

32h 59m

2 stops

LHR06:30London Heathrow

£586

Find similar

Air Canada

8 Dec

LHR13:25London Heathrow

40h 20m

2 stops

BOI22:45Boise Air Term. Gowen Fld

16 Dec

BOI06:20Boise Air Term. Gowen Fld

17h 50m

2 stops

LHR07:10London Heathrow

£592

Find similar

Air Canada

28 Oct

LHR14:30London Heathrow

29h 14m

2 stops

BOI13:44Boise Air Term. Gowen Fld

16 Nov

BOI06:15Boise Air Term. Gowen Fld

19h 15m

2 stops

LHR08:30London Heathrow

£616

Find similar

Fly from

Fly to

Route

Depart

Return

Price

LondonSpokane

LGW - GEG

LGWGEG

London Gatwick

Wed 10/9

10:55-22:25

1 stop19h 30m

Spokane

Wed 17/9

06:25-10:55

1 stop20h 30m

£472

LondonSpokane

LGW - GEG

LGWGEG

London Gatwick

Wed 10/9

10:55-12:46

2 stops33h 51m

Spokane

Wed 17/9

06:25-10:55

1 stop20h 30m

£499

LondonBoise

LGW - BOI

LGWBOI

London Gatwick

Sat 30/8

10:45-22:54

1 stop19h 09m

Boise Air Term. Gowen Fld

Sat 6/9

20:27-10:55

1 stop31h 28m

£512

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Wed 10/9

07:25-21:03

2 stops21h 38m

Spokane

Wed 17/9

12:35-10:25

1 stop13h 50m

£518

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Sun 14/9

07:25-23:05

2 stops23h 40m

Spokane

Sun 21/9

16:00-20:40

2 stops20h 40m

£522

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Wed 10/9

11:25-21:03

1 stop17h 38m

Spokane

Wed 17/9

07:23-10:25

1 stop19h 02m

£540

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Mon 15/9

13:05-23:05

2 stops18h 00m

Spokane

Mon 22/9

05:15-05:55

2 stops16h 40m

£543

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Mon 6/10

13:25-20:16

1 stop13h 51m

Boise Air Term. Gowen Fld

Mon 13/10

16:46-14:15

1 stop14h 29m

£620

LondonBoise

LCY - BOI

LCYBOI

London City

Sat 13/9

10:00-23:59

2 stops20h 59m

Boise Air Term. Gowen Fld

Sat 20/9

16:20-19:40

2 stops20h 20m

£815

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Mon 11/8

06:30-14:45

2 stops16h 15m

Spokane

Fri 22/8

13:00-09:50

1 stop12h 50m

£1,045

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 November is, on average, the cheapest month to fly to Idaho from United Kingdom, with most prices found around £598. If you’re not able to fly to Idaho in November, then February is your next best option. Flight prices from United Kingdom to Idaho during February average around £608.

What is the cheapest day to depart on your flight to Idaho?

On average, the least expensive day to fly to Idaho from United Kingdom is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as £637. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from United Kingdom because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £878.

What is the cheapest time of day to depart on your flight to Idaho?

According to our data, the cheapest time of day to fly to Idaho is at midday. momondo users have found flights departing from United Kingdom to Idaho at midday for as low as £657. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the evening are often more expensive, with an average ticket price of £851.

How far in advance should I book a flight to Idaho?

You are more likely to see cheaper flights to Idaho from United Kingdom when booking weeks ahead of your departure date. In general, you can expect to find flights to Idaho for around £705 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Idaho from United Kingdom for as low as £578 on momondo.

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

You could potentially save up to 32% 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

Best price found	£317
Fastest flight time	12h 49m
Direct flights	None
Airports in Idaho	4 airports

The best one-way flight to Idaho from United Kingdom in the past 72 hours is £317. The best return flight deal from United Kingdom to Idaho found on momondo in the last 72 hours is £472.

The fastest flight from United Kingdom to Idaho takes 12h 49m

There are no direct flights from United Kingdom to Idaho. Popular non-direct routes for this connection are London Gatwick Airport - Spokane Airport, London Heathrow Airport - Spokane Airport and London Heathrow Airport - Idaho Falls Fanning Field Airport.

There are 4 airports near Idaho: Idaho Falls Fanning Field (IDA), Spokane (GEG), Boise Air Term. Gowen Fld (BOI), Jackson Hole (JAC)

Search flight deals

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 11 operators available for flights from United Kingdom to Idaho as of August 2025.
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
KLM	PriceFrom £538	Free Cancellation	Rating 7.8 1,383 reviews	Search KLM flights
United Airlines	PriceFrom £543	Free Cancellation	Rating 7.4 8,900 reviews	Search United Airlines flights
Lufthansa	PriceFrom £545	Free Cancellation	Rating 6.8 7,275 reviews	Search Lufthansa flights
Finnair	PriceFrom £545	Free Cancellation	Rating 7.6 1,316 reviews	Search Finnair flights
Iberia	PriceFrom £602	Free Cancellation	Rating 7.0 2,859 reviews	Search Iberia flights
Scandinavian Airlines	PriceFrom £611	Free Cancellation	Rating 7.3 1,457 reviews	Search Scandinavian Airlines flights
Virgin Atlantic	PriceFrom £611	Free Cancellation	Rating 7.4 655 reviews	Search Virgin Atlantic flights
British Airways	PriceFrom £623	Free Cancellation	Rating 6.6 7,222 reviews	Search British Airways flights
Icelandair	PriceFrom £645	Free Cancellation	Rating 7.0 520 reviews	Search Icelandair flights
Air France	PriceFrom £666	Free Cancellation	Rating 7.5 1,465 reviews	Search Air France 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.