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 8 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 17h 54m on average. Another popular route from United Kingdom to Idaho is flying from Birmingham to Boise, which will take roughly 22h 27m. Keep in mind that layovers or delays could extend your travel time.

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

Lufthansa, United Airlines, and Icelandair 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 8 operators available for flights from United Kingdom to Idaho as of March 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.

£356 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.

08:00 - 18:36

LHR

GEG

18h 36m

1 stop

07:10 - 09:00

GEG

LHR

17h 50m

1 stop

£463United Airlines

Fri, 1 May - Tue, 5 May

08:45 - 23:02

LHR

BOI

21h 17m

2 stops

07:40 - 10:10

BOI

LHR

19h 30m

2 stops

£493Multiple Airlines

Tue, 14 Apr - Tue, 21 Apr

08:20 - 23:02

LHR

BOI

21h 42m

1 stop

07:40 - 12:45

BOI

LHR

22h 05m

2 stops

£509Multiple Airlines

Tue, 14 Apr - Tue, 21 Apr

06:55 - 21:11

LHR

GEG

22h 16m

2 stops

12:35 - 11:10

GEG

LHR

14h 35m

1 stop

£560Lufthansa

Wed, 15 Apr - Wed, 22 Apr

14:50 - 21:22

LHR

BOI

13h 32m

1 stop

10:35 - 09:40

BOI

LHR

16h 05m

1 stop

£575Lufthansa

Mon, 13 Apr - Mon, 20 Apr

15:40 - 22:57

LGW

BOI

38h 17m

2 stops

16:38 - 14:40

BOI

LGW

39h 02m

2 stops

£668Icelandair

Mon, 20 Apr - Mon, 27 Apr

15:40 - 22:57

LGW

BOI

38h 17m

2 stops

16:38 - 14:40

BOI

LGW

39h 02m

2 stops

£671Icelandair

Mon, 20 Apr - Mon, 27 Apr

10:55 - 22:16

LHR

IDA

18h 21m

1 stop

13:10 - 11:00

IDA

LHR

14h 50m

1 stop

£831Virgin Atlantic

Tue, 31 Mar - Tue, 7 Apr

18:55 - 18:15

LHR

IDA

30h 20m

2 stops

13:10 - 12:10

IDA

LHR

16h 00m

2 stops

£838Virgin Atlantic

Tue, 31 Mar - Tue, 7 Apr

20:05 - 19:02

LCY

JAC

28h 57m

2 stops

17:50 - 18:30

JAC

LCY

17h 40m

2 stops

£989KLM

Tue, 24 Mar - Sun, 29 Mar

United Airlines flights from United Kingdom to Idaho

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

United Airlines

1 May

LHR08:00London Heathrow

18h 36m

1 stop

GEG18:36Spokane

5 May

GEG07:10Spokane

17h 50m

1 stop

LHR09:00London Heathrow

£463

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

16h 40m

2 stops

LHR05:55London Heathrow

£569

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

16h 40m

2 stops

LHR05:55London Heathrow

£570

Icelandair flights from United Kingdom to Idaho

Our best Icelandair deals on United Kingdom to Idaho flight tickets

Icelandair

20 Apr

LGW15:40London Gatwick

38h 17m

2 stops

BOI22:57Boise Air Term. Gowen Fld

27 Apr

BOI16:38Boise Air Term. Gowen Fld

39h 02m

2 stops

LGW14:40London Gatwick

£668

Icelandair

20 Apr

LGW15:40London Gatwick

38h 17m

2 stops

BOI22:57Boise Air Term. Gowen Fld

27 Apr

BOI16:38Boise Air Term. Gowen Fld

39h 02m

2 stops

LGW14:40London Gatwick

£671

Icelandair

11 Mar

LHR12:15London Heathrow

16h 25m

2 stops

BOI22:40Boise Air Term. Gowen Fld

31 Mar

BOI11:58Boise Air Term. Gowen Fld

40h 57m

2 stops

LHR11:55London Heathrow

£676

Fly from

Fly to

Route

Depart

Return

Price

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Fri 1/5

08:00-18:36

1 stop18h 36m

Spokane

Tue 5/5

07:10-09:00

1 stop17h 50m

£463

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Tue 14/4

08:45-23:02

2 stops21h 17m

Boise Air Term. Gowen Fld

Tue 21/4

07:40-10:10

2 stops19h 30m

£493

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Tue 14/4

08:20-23:02

1 stop21h 42m

Boise Air Term. Gowen Fld

Tue 21/4

07:40-12:45

2 stops22h 05m

£509

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Wed 15/4

06:55-21:11

2 stops22h 16m

Spokane

Wed 22/4

12:35-11:10

1 stop14h 35m

£560

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Mon 13/4

14:50-21:22

1 stop13h 32m

Boise Air Term. Gowen Fld

Mon 20/4

10:35-09:40

1 stop16h 05m

£575

LondonBoise

LGW - BOI

LGWBOI

London Gatwick

Mon 20/4

15:40-22:57

2 stops38h 17m

Boise Air Term. Gowen Fld

Mon 27/4

16:38-14:40

2 stops39h 02m

£668

LondonBoise

LGW - BOI

LGWBOI

London Gatwick

Mon 20/4

15:40-22:57

2 stops38h 17m

Boise Air Term. Gowen Fld

Mon 27/4

16:38-14:40

2 stops39h 02m

£671

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 31/3

10:55-22:16

1 stop18h 21m

Idaho Falls Fanning Field

Tue 7/4

13:10-11:00

1 stop14h 50m

£831

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 31/3

18:55-18:15

2 stops30h 20m

Idaho Falls Fanning Field

Tue 7/4

13:10-12:10

2 stops16h 00m

£838

LondonJackson

LCY - JAC

LCYJAC

London City

Tue 24/3

20:05-19:02

2 stops28h 57m

Jackson Hole

Sun 29/3

17:50-18:30

2 stops17h 40m

£989

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 £558. If you’re not able to fly to Idaho in January, then September is your next best option. Flight prices from United Kingdom to Idaho during September average around £586.

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 £752 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 6% 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	14h 40m
Direct flights	None

The fastest flight from United Kingdom to Idaho takes 14h 40m

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 8 operators available for flights from United Kingdom to Idaho as of March 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
United Airlines	PriceFrom £467	Free Cancellation	Rating 7.4 9,376 reviews	Search United Airlines flights
Lufthansa	PriceFrom £539	Free Cancellation	Rating 6.8 7,818 reviews	Search Lufthansa flights
Virgin Atlantic	PriceFrom £597	Free Cancellation	Rating 7.5 680 reviews	Search Virgin Atlantic flights
Scandinavian Airlines	PriceFrom £599	Free Cancellation	Rating 7.3 1,702 reviews	Search Scandinavian Airlines flights
Icelandair	PriceFrom £646	Free Cancellation	Rating 7.1 617 reviews	Search Icelandair flights
Air France	PriceFrom £653	Free Cancellation	Rating 7.4 1,541 reviews	Search Air France flights
KLM	PriceFrom £697	Free Cancellation	Rating 7.7 1,461 reviews	Search KLM flights
Delta	PriceFrom £792	Free Cancellation	Rating 7.9 8,237 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.