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 Edinburgh and flying into Boise (one of the most popular routes), then the duration is 16h 46m on average. Another popular route from United Kingdom to Idaho is flying from London to Boise, which will take roughly 18h 30m. Keep in mind that layovers or delays could extend your travel time.

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 40% of people opting to fly with this airline when travelling to Idaho. Keep in mind that there are 9 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, Finnair, and Delta are the most popular carriers operating from 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 10 operators available for flights from United Kingdom to Idaho as of November 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.

£281 Cheap Flights from the United Kingdom to Idaho in 2025/26

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Find the cheapest flights from the United Kingdom to Idaho

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Recent return flight deals from the United Kingdom to Idaho

Enter your travel dates to find the best prices.

11:55 - 23:01LGW-BOI

18h 06m2 stops

09:50 - 10:55BOI-LGW

18h 05m2 stops

£519Multiple Airlines

Find Deal

Mon, 9 Feb - Mon, 16 Feb

12:15 - 23:01LHR-BOI

17h 46m2 stops

06:28 - 10:50BOI-LHR

21h 22m2 stops

£522Multiple Airlines

Find Deal

Mon, 9 Feb - Mon, 16 Feb

07:40 - 09:59LHR-BOI

33h 19m2 stops

13:50 - 13:30BOI-LHR

16h 40m1 stop

£551United Airlines

Find Deal

Mon, 8 Dec - Mon, 15 Dec

07:40 - 09:59LHR-BOI

33h 19m2 stops

12:16 - 11:05BOI-LHR

15h 49m2 stops

£552United Airlines

Find Deal

Mon, 8 Dec - Mon, 15 Dec

07:40 - 18:07LHR-BOI

17h 27m2 stops

14:49 - 10:50BOI-LHR

37h 01m2 stops

£568Lufthansa

Find Deal

Tue, 9 Dec - Sun, 14 Dec

07:40 - 18:07LHR-BOI

17h 27m2 stops

14:49 - 10:50BOI-LHR

37h 01m2 stops

£569Lufthansa

Find Deal

Tue, 9 Dec - Sun, 14 Dec

11:55 - 20:59LGW-GEG

16h 04m2 stops

12:00 - 10:55GEG-LGW

15h 55m2 stops

£585Icelandair

Find Deal

Tue, 10 Mar - Tue, 17 Mar

11:55 - 20:59LGW-GEG

16h 04m2 stops

12:44 - 10:55GEG-LGW

15h 11m2 stops

£608Icelandair

Find Deal

Tue, 10 Mar - Tue, 17 Mar

07:45 - 00:09LCY-BOI

23h 24m2 stops

05:35 - 17:20BOI-LCY

28h 45m2 stops

£731Virgin Atlantic

Find Deal

Mon, 8 Dec - Mon, 15 Dec

08:40 - 00:09LCY-BOI

22h 29m2 stops

05:35 - 17:20BOI-LCY

28h 45m2 stops

£732Virgin Atlantic

Find Deal

Mon, 8 Dec - Mon, 15 Dec

United Airlines flights from United Kingdom to Idaho

Our best United Airlines deals on United Kingdom to Idaho flight tickets

United Airlines

8 Dec

LHR07:40London Heathrow

33h 19m

2 stops

BOI09:59Boise Air Term. Gowen Fld

15 Dec

BOI13:50Boise Air Term. Gowen Fld

16h 40m

1 stop

LHR13:30London Heathrow

£551

Find similar

United Airlines

8 Dec

LHR07:40London Heathrow

33h 19m

2 stops

BOI09:59Boise Air Term. Gowen Fld

15 Dec

BOI12:16Boise Air Term. Gowen Fld

15h 49m

2 stops

LHR11:05London Heathrow

£552

Find similar

United Airlines

8 Dec

LHR07:40London Heathrow

33h 19m

2 stops

BOI09:59Boise Air Term. Gowen Fld

15 Dec

BOI14:49Boise Air Term. Gowen Fld

11h 51m

1 stop

LHR09:40London Heathrow

£553

Find similar

Lufthansa flights from United Kingdom to Idaho

Our best Lufthansa deals on United Kingdom to Idaho flight tickets

Lufthansa

9 Dec

LHR07:40London Heathrow

17h 27m

2 stops

BOI18:07Boise Air Term. Gowen Fld

14 Dec

BOI14:49Boise Air Term. Gowen Fld

37h 01m

2 stops

LHR10:50London Heathrow

£568

Find similar

Lufthansa

9 Dec

LHR07:40London Heathrow

17h 27m

2 stops

BOI18:07Boise Air Term. Gowen Fld

14 Dec

BOI14:49Boise Air Term. Gowen Fld

37h 01m

2 stops

LHR10:50London Heathrow

£569

Find similar

Lufthansa

9 Dec

LHR07:40London Heathrow

19h 03m

2 stops

BOI19:43Boise Air Term. Gowen Fld

14 Dec

BOI14:49Boise Air Term. Gowen Fld

32h 06m

2 stops

LHR05:55London Heathrow

£569

Find similar

Fly from

Fly to

Route

Depart

Return

Price

LondonBoise

LGW - BOI

LGWBOI

London Gatwick

Mon 9/2

11:55-23:01

2 stops18h 06m

Boise Air Term. Gowen Fld

Mon 16/2

09:50-10:55

2 stops18h 05m

£518

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Mon 9/2

12:15-23:01

2 stops17h 46m

Boise Air Term. Gowen Fld

Mon 16/2

06:28-10:50

2 stops21h 22m

£522

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Mon 8/12

07:40-09:59

2 stops33h 19m

Boise Air Term. Gowen Fld

Mon 15/12

13:50-13:30

1 stop16h 40m

£551

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Mon 8/12

07:40-09:59

2 stops33h 19m

Boise Air Term. Gowen Fld

Mon 15/12

12:16-11:05

2 stops15h 49m

£552

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Tue 9/12

07:40-18:07

2 stops17h 27m

Boise Air Term. Gowen Fld

Sun 14/12

14:49-10:50

2 stops37h 01m

£568

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Tue 9/12

07:40-18:07

2 stops17h 27m

Boise Air Term. Gowen Fld

Sun 14/12

14:49-10:50

2 stops37h 01m

£569

LondonSpokane

LGW - GEG

LGWGEG

London Gatwick

Tue 10/3

11:55-20:59

2 stops16h 04m

Spokane

Tue 17/3

12:00-10:55

2 stops15h 55m

£585

LondonSpokane

LGW - GEG

LGWGEG

London Gatwick

Tue 10/3

11:55-20:59

2 stops16h 04m

Spokane

Tue 17/3

12:44-10:55

2 stops15h 11m

£608

LondonBoise

LCY - BOI

LCYBOI

London City

Mon 8/12

07:45-00:09

2 stops23h 24m

Boise Air Term. Gowen Fld

Mon 15/12

05:35-17:20

2 stops28h 45m

£731

LondonBoise

LCY - BOI

LCYBOI

London City

Mon 8/12

08:40-00:09

2 stops22h 29m

Boise Air Term. Gowen Fld

Mon 15/12

05:35-17:20

2 stops28h 45m

£732

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 September is, on average, the cheapest month to fly to Idaho from United Kingdom, with most prices found around £602. If you’re not able to fly to Idaho in September, then February is your next best option. Flight prices from United Kingdom to Idaho during February average around £610.

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 £641. 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 £884.

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 £661. 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 £856.

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 £711 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 £585 on momondo.

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

You could potentially save up to 8% 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

Direct flights	None

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

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 10 operators available for flights from United Kingdom to Idaho as of November 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
Finnair	PriceFrom £528	Free Cancellation	Rating 7.6 1,335 reviews	Search Finnair flights
United Airlines	PriceFrom £546	Free Cancellation	Rating 7.4 8,993 reviews	Search United Airlines flights
Lufthansa	PriceFrom £554	Free Cancellation	Rating 6.8 7,542 reviews	Search Lufthansa flights
Virgin Atlantic	PriceFrom £612	Free Cancellation	Rating 7.5 671 reviews	Search Virgin Atlantic flights
Scandinavian Airlines	PriceFrom £615	Free Cancellation	Rating 7.4 1,553 reviews	Search Scandinavian Airlines flights
British Airways	PriceFrom £639	Free Cancellation	Rating 6.7 7,494 reviews	Search British Airways flights
Icelandair	PriceFrom £662	Free Cancellation	Rating 7.1 563 reviews	Search Icelandair flights
Air France	PriceFrom £670	Free Cancellation	Rating 7.4 1,482 reviews	Search Air France flights
KLM	PriceFrom £700	Free Cancellation	Rating 7.7 1,404 reviews	Search KLM 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.