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 on average. Another popular route from United Kingdom to Idaho is flying from Birmingham to Boise, which will take roughly 19h 03m. 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 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 is 1 operator 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 for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for 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.

$485 Cheap Flights from the United Kingdom to Idaho in 2026

Find the cheapest flights from the United Kingdom to Idaho

Round-trip

One-way

Last minute

Recent round-trip flight deals from the United Kingdom to Idaho

Enter your travel dates to find the best prices.

6:40 am - 6:50 pm

LHR

GEG

20h 10m

2 stops

11:18 am - 9:40 pm

GEG

LHR

26h 22m

2 stops

$777Scandinavian Airlines

Tue, Sep 8 - Tue, Oct 6

6:40 am - 5:09 pm

LHR

GEG

18h 29m

2 stops

1:00 pm - 5:40 pm

GEG

LHR

20h 40m

2 stops

$778Scandinavian Airlines

Tue, Sep 8 - Tue, Oct 6

3:40 pm - 11:59 pm

LGW

GEG

16h 19m

2 stops

7:03 am - 2:40 pm

GEG

LGW

23h 37m

2 stops

$869Multiple Airlines

Thu, Sep 3 - Wed, Sep 16

10:20 am - 11:58 pm

LGW

BOI

20h 38m

2 stops

2:08 pm - 6:50 pm

BOI

LGW

21h 42m

2 stops

$927Multiple Airlines

Mon, Oct 19 - Fri, Oct 23

2:10 pm - 11:06 am

LHR

BOI

27h 56m

2 stops

10:31 am - 12:35 pm

BOI

LHR

19h 04m

1 stop

$932United Airlines

Wed, Sep 16 - Wed, Sep 23

1:00 pm - 9:48 pm

LGW

GEG

16h 48m

2 stops

4:38 pm - 2:40 pm

GEG

LGW

14h 02m

2 stops

$964Icelandair

Tue, Sep 8 - Tue, Oct 6

1:00 pm - 11:59 pm

LGW

GEG

18h 59m

2 stops

4:38 pm - 2:40 pm

GEG

LGW

38h 02m

2 stops

$979Icelandair

Tue, Sep 8 - Tue, Oct 6

10:00 am - 6:48 pm

LGW

GEG

16h 48m

2 stops

10:50 am - 3:45 pm

GEG

LGW

20h 55m

2 stops

$981Virgin Atlantic

Wed, Nov 18 - Wed, Nov 25

10:35 am - 10:54 pm

LGW

GEG

20h 19m

2 stops

3:30 pm - 4:00 pm

GEG

LGW

16h 30m

2 stops

$983Virgin Atlantic

Tue, Sep 8 - Tue, Oct 6

6:05 am - 12:24 pm

MAN

GEG

38h 19m

2 stops

5:00 am - 5:10 pm

GEG

MAN

28h 10m

2 stops

$1,099United Airlines

Thu, Oct 1 - Mon, Oct 5

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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

Oct 30

LHR2:30 pmLondon Heathrow

26h 44m

2 stops

BOI11:14 amBoise Air Term. Gowen Fld

Nov 14

BOI11:51 amBoise Air Term. Gowen Fld

16h 59m

2 stops

LHR11:50 amLondon Heathrow

$997

Air Canada

Dec 7

MAN11:30 amManchester

33h 00m

2 stops

BOI1:30 pmBoise Air Term. Gowen Fld

Jan 13

BOI6:20 amBoise Air Term. Gowen Fld

19h 20m

2 stops

MAN8:40 amManchester

$1,016

Air Canada

Sep 4

LHR2:05 pmLondon Heathrow

33h 06m

2 stops

GEG3:11 pmSpokane

Sep 16

GEG1:09 pmSpokane

35h 26m

2 stops

LHR8:35 amLondon Heathrow

$1,019

Alaska Airlines flights from United Kingdom to Idaho

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

Alaska Airlines

Oct 17

LHR5:00 pmLondon Heathrow

13h 58m

1 stop

BOI11:58 pmBoise Air Term. Gowen Fld

Nov 1

BOI4:21 pmBoise Air Term. Gowen Fld

12h 59m

1 stop

LHR12:20 pmLondon Heathrow

$1,033

Alaska Airlines

Oct 24

LHR5:00 pmLondon Heathrow

13h 58m

1 stop

BOI11:58 pmBoise Air Term. Gowen Fld

Nov 7

BOI8:52 pmBoise Air Term. Gowen Fld

32h 28m

1 stop

LHR12:20 pmLondon Heathrow

$1,044

Alaska Airlines

Jul 24

LHR5:00 pmLondon Heathrow

14h 04m

1 stop

BOI12:04 amBoise Air Term. Gowen Fld

Jan 2

BOI7:12 pmBoise Air Term. Gowen Fld

34h 08m

1 stop

LHR12:20 pmLondon Heathrow

$1,817

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Tue 9/8

6:40 am-6:50 pm

2 stops20h 10m

Spokane

Tue 10/6

11:18 am-9:40 pm

2 stops26h 22m

$777

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Tue 9/8

6:40 am-5:09 pm

2 stops18h 29m

Spokane

Tue 10/6

1:00 pm-5:40 pm

2 stops20h 40m

$778

LondonSpokane

LGW - GEG

LGWGEG

London Gatwick

Thu 9/3

3:40 pm-11:59 pm

2 stops16h 19m

Spokane

Wed 9/16

7:03 am-2:40 pm

2 stops23h 37m

$869

LondonBoise

LGW - BOI

LGWBOI

London Gatwick

Mon 10/19

10:20 am-11:58 pm

2 stops20h 38m

Boise Air Term. Gowen Fld

Fri 10/23

2:08 pm-6:50 pm

2 stops21h 42m

$927

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Wed 9/16

2:10 pm-11:06 am

2 stops27h 56m

Boise Air Term. Gowen Fld

Wed 9/23

10:31 am-12:35 pm

1 stop19h 04m

$932

Quickest round-trip

LondonSpokane

LGW - GEG

LGWGEG

London Gatwick

Tue 9/8

1:00 pm-9:48 pm

2 stops16h 48m

Spokane

Tue 10/6

4:38 pm-2:40 pm

2 stops14h 02m

$964

LondonSpokane

LGW - GEG

LGWGEG

London Gatwick

Tue 9/8

1:00 pm-11:59 pm

2 stops18h 59m

Spokane

Tue 10/6

4:38 pm-2:40 pm

2 stops38h 02m

$979

LondonSpokane

LGW - GEG

LGWGEG

London Gatwick

Wed 11/18

10:00 am-6:48 pm

2 stops16h 48m

Spokane

Wed 11/25

10:50 am-3:45 pm

2 stops20h 55m

$981

LondonSpokane

LGW - GEG

LGWGEG

London Gatwick

Tue 9/8

10:35 am-10:54 pm

2 stops20h 19m

Spokane

Tue 10/6

3:30 pm-4:00 pm

2 stops16h 30m

$983

ManchesterSpokane

MAN - GEG

MANGEG

Manchester

Thu 10/1

6:05 am-12:24 pm

2 stops38h 19m

Spokane

Mon 10/5

5:00 am-5:10 pm

2 stops28h 10m

$1,099

Flights are sorted by cheapest round-trip 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?

In general, April is the cheapest month to fly from United Kingdom to Idaho. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $834. If you don’t want to visit Idaho in April, then you should wait until February to fly from United Kingdom, when ticket prices are also cheap, with an average price of $878.

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

You could potentially save up to 16% 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 is 1 operator 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 for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for 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.

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?

Yes. momondo allows you to filter the results for United Kingdom to Idaho flights to just show those with flexible booking policies.

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?

If you are not ready to book a flight from United Kingdom to Idaho now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Idaho and let you know when they change.