Which airlines fly to Idaho?

United Airlines, Virgin Atlantic and Icelandair 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 44% 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 16h 32m on average. Another popular route from United Kingdom to Idaho is flying from Edinburgh to Boise, which will take roughly 18h 51m. 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 July 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.

£429 Cheap Flights from the United Kingdom to Idaho in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from the United Kingdom to Idaho

Return

One-way

Last minute

Recent return flight deals from the United Kingdom to Idaho

Enter your travel dates to find the best prices.

14:10 - 22:58

LHR

BOI

15h 48m

1 stop

08:08 - 06:45

BOI

LHR

15h 37m

1 stop

£556United Airlines

Wed, 30 Sep - Thu, 8 Oct

19:30 - 17:00

LHR

GEG

29h 30m

2 stops

13:00 - 13:35

GEG

LHR

16h 35m

2 stops

£558Scandinavian Airlines

Fri, 4 Sep - Fri, 11 Sep

06:40 - 18:40

LHR

BOI

19h 00m

2 stops

16:00 - 16:00

BOI

LHR

41h 00m

2 stops

£574Scandinavian Airlines

Tue, 15 Sep - Fri, 16 Oct

10:35 - 22:54

LGW

GEG

20h 19m

2 stops

15:30 - 16:00

GEG

LGW

16h 30m

2 stops

£735Virgin Atlantic

Tue, 8 Sep - Tue, 6 Oct

10:35 - 22:54

LGW

GEG

20h 19m

2 stops

15:30 - 16:00

GEG

LGW

16h 30m

2 stops

£738Virgin Atlantic

Tue, 8 Sep - Tue, 6 Oct

17:00 - 15:20

LHR

IDA

29h 20m

1 stop

06:18 - 15:05

IDA

LHR

25h 47m

1 stop

£785Alaska Airlines

Tue, 1 Sep - Tue, 8 Sep

17:00 - 15:20

LHR

IDA

29h 20m

1 stop

06:18 - 15:05

IDA

LHR

25h 47m

1 stop

£800Alaska Airlines

Tue, 1 Sep - Fri, 25 Sep

11:25 - 17:49

LHR

JAC

13h 24m

1 stop

13:40 - 12:25

JAC

LHR

15h 45m

1 stop

£886Lufthansa

Tue, 1 Sep - Tue, 15 Sep

16:00 - 09:43

LHR

JAC

24h 43m

2 stops

07:15 - 05:55

JAC

LHR

15h 40m

2 stops

£911Lufthansa

Tue, 1 Sep - Tue, 15 Sep

11:55 - 21:11

LGW

GEG

17h 16m

2 stops

11:44 - 10:55

GEG

LGW

15h 11m

2 stops

£1,121Icelandair

Mon, 28 Dec - Mon, 4 Jan

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Air Canada flights from United Kingdom to Idaho

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

Air Canada

6 Oct

LHR15:05London Heathrow

28h 58m

2 stops

BOI13:03Boise Air Term. Gowen Fld

13 Oct

BOI06:25Boise Air Term. Gowen Fld

17h 05m

2 stops

LHR06:30London Heathrow

£689

Air Canada

30 Oct

LHR14:30London Heathrow

26h 44m

2 stops

BOI11:14Boise Air Term. Gowen Fld

14 Nov

BOI11:51Boise Air Term. Gowen Fld

16h 59m

2 stops

LHR11:50London Heathrow

£744

Air Canada

30 Oct

LHR14:30London Heathrow

26h 44m

2 stops

BOI11:14Boise Air Term. Gowen Fld

6 Nov

BOI06:30Boise Air Term. Gowen Fld

17h 40m

2 stops

LHR07:10London Heathrow

£746

Scandinavian Airlines flights from United Kingdom to Idaho

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

Scandinavian Airlines

4 Sept

LHR19:30London Heathrow

29h 30m

2 stops

GEG17:00Spokane

11 Sept

GEG13:00Spokane

16h 35m

2 stops

LHR13:35London Heathrow

£558

Scandinavian Airlines

15 Sept

LHR06:40London Heathrow

19h 00m

2 stops

BOI18:40Boise Air Term. Gowen Fld

16 Oct

BOI16:00Boise Air Term. Gowen Fld

41h 00m

2 stops

LHR16:00London Heathrow

£574

Scandinavian Airlines

3 Oct

LHR06:40London Heathrow

19h 00m

2 stops

BOI18:40Boise Air Term. Gowen Fld

10 Oct

BOI12:08Boise Air Term. Gowen Fld

21h 52m

3 stops

LHR17:00London Heathrow

£587

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Wed 30/9

14:10-22:58

1 stop15h 48m

Boise Air Term. Gowen Fld

Thu 8/10

08:08-06:45

1 stop15h 37m

£556

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Fri 4/9

19:30-17:00

2 stops29h 30m

Spokane

Fri 11/9

13:00-13:35

2 stops16h 35m

£558

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Tue 15/9

06:40-18:40

2 stops19h 00m

Boise Air Term. Gowen Fld

Fri 16/10

16:00-16:00

2 stops41h 00m

£574

LondonSpokane

LGW - GEG

LGWGEG

London Gatwick

Tue 8/9

10:35-22:54

2 stops20h 19m

Spokane

Tue 6/10

15:30-16:00

2 stops16h 30m

£735

LondonSpokane

LGW - GEG

LGWGEG

London Gatwick

Tue 8/9

10:35-22:54

2 stops20h 19m

Spokane

Tue 6/10

15:30-16:00

2 stops16h 30m

£738

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 1/9

17:00-15:20

1 stop29h 20m

Idaho Falls Fanning Field

Tue 8/9

06:18-15:05

1 stop25h 47m

£785

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 1/9

17:00-15:20

1 stop29h 20m

Idaho Falls Fanning Field

Fri 25/9

06:18-15:05

1 stop25h 47m

£800

Fastest return journey

LondonJackson

LHR - JAC

LHRJAC

London Heathrow

Tue 1/9

11:25-17:49

1 stop13h 24m

Jackson Hole

Tue 15/9

13:40-12:25

1 stop15h 45m

£886

LondonJackson

LHR - JAC

LHRJAC

London Heathrow

Tue 1/9

16:00-09:43

2 stops24h 43m

Jackson Hole

Tue 15/9

07:15-05:55

2 stops15h 40m

£911

LondonSpokane

LGW - GEG

LGWGEG

London Gatwick

Mon 28/12

11:55-21:11

2 stops17h 16m

Spokane

Mon 4/1

11:44-10:55

2 stops15h 11m

£1,121

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 April is, on average, the cheapest month to fly to Idaho from United Kingdom, with most prices found around £622. If you’re not able to fly to Idaho in April, then February is your next best option. Flight prices from United Kingdom to Idaho during February average around £655.

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

You could potentially save up to 24% 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	12h 49m
Direct flights	None

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

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 July 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 £508	Free Cancellation	Rating 6.8 8,152 reviews	Search Lufthansa flights
United Airlines	PriceFrom £553	Free Cancellation	Rating 7.4 10,018 reviews	Search United Airlines flights
Virgin Atlantic	PriceFrom £600	Free Cancellation	Rating 7.5 693 reviews	Search Virgin Atlantic flights
KLM	PriceFrom £656	Free Cancellation	Rating 7.8 1,543 reviews	Search KLM flights
Icelandair	PriceFrom £701	Free Cancellation	Rating 7.0 715 reviews	Search Icelandair flights
Alaska Airlines	PriceFrom £736	Free Cancellation	Rating 7.9 12,687 reviews	Search Alaska Airlines flights
Delta	PriceFrom £1,038	Free Cancellation	Rating 7.8 8,476 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.