How long is the flight from Idaho to United Kingdom?

The flight from Idaho to United Kingdom depends on which airports you’re departing from and arriving to, and whether or not you have a layover. If you fly from Boise (a popular airport in Idaho) to London Heathrow Airport (the most popular airport in United Kingdom), then the flight time is 11h 57m on average. If you fly from Idaho Falls (another popular airport in Idaho) to London Heathrow Airport, then the average flight time is 13h 45m.

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

United Airlines, American Airlines, and Lufthansa are the most popular carriers operating from Idaho to United Kingdom

When did momondo last update prices for flights from Idaho to United Kingdom?

Prices for flights from Idaho to United Kingdom were last updated today.

How many operators does momondo search for flights from Idaho to United Kingdom?

As of November 2025, there is 1 operator available to choose from for flights from Idaho to United Kingdom.

How old do you have to be to fly from Idaho to United Kingdom?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Idaho to United Kingdom.

What documentation or ID do you need to fly to United Kingdom?

The required travel and health documents for your United Kingdom trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at United Kingdom. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

£241 Cheap Flights from Idaho to the United Kingdom in 2025/26

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Find the cheapest flights from Idaho to the United Kingdom

Round-trip

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

13:46 - 10:30BOI-LHR

13h 44m1 stop

11:20 - 22:49LHR-BOI

18h 29m1 stop

£431Virgin Atlantic

Find Deal

tir., 17 feb. - tor., 26 feb.

05:20 - 07:05BOI-LHR

18h 45m1 stop

12:20 - 18:28LHR-BOI

13h 08m1 stop

£432Virgin Atlantic

Find Deal

tir., 17 feb. - tor., 26 feb.

13:00 - 10:00BOI-LHR

14h 00m1 stop

06:20 - 18:28LHR-BOI

19h 08m2 stops

£455Delta

Find Deal

tir., 17 feb. - fre., 27 feb.

11:22 - 10:30GEG-LHR

15h 08m1 stop

06:20 - 18:47LHR-GEG

20h 27m2 stops

£455Delta

Find Deal

ons., 21 jan. - ons., 4 feb.

11:19 - 10:00BOI-LHR

15h 41m1 stop

06:20 - 23:59LHR-BOI

24h 39m2 stops

£456Delta

Find Deal

tir., 17 feb. - fre., 27 feb.

10:36 - 10:30BOI-LHR

16h 54m1 stop

10:45 - 17:33LHR-BOI

13h 48m1 stop

£461KLM

Find Deal

tir., 17 feb. - tir., 24 feb.

11:15 - 10:30GEG-LHR

15h 15m1 stop

11:05 - 19:59LHR-GEG

16h 54m1 stop

£461KLM

Find Deal

tir., 17 feb. - ons., 4 mar.

07:20 - 15:15BOI-EDI

24h 55m2 stops

18:35 - 19:25EDI-BOI

31h 50m2 stops

£463Finnair

Find Deal

man., 12 jan. - man., 19 jan.

07:20 - 15:15BOI-EDI

24h 55m2 stops

18:35 - 19:25EDI-BOI

31h 50m2 stops

£464Finnair

Find Deal

man., 12 jan. - man., 19 jan.

14:04 - 11:40BOI-LHR

14h 36m1 stop

11:20 - 21:25LHR-BOI

17h 05m1 stop

£474Air France

Find Deal

fre., 5 dec. - ons., 24 dec.

Virgin Atlantic flights from Idaho to United Kingdom

Our best Virgin Atlantic deals on Idaho to United Kingdom flight tickets

Virgin Atlantic

17 Feb

BOI13:46Boise Air Term. Gowen Fld

13h 44m

1 stop

LHR10:30London Heathrow

26 Feb

LHR11:20London Heathrow

18h 29m

1 stop

BOI22:49Boise Air Term. Gowen Fld

£431

Find similar

Virgin Atlantic

17 Feb

BOI05:20Boise Air Term. Gowen Fld

18h 45m

1 stop

LHR07:05London Heathrow

26 Feb

LHR12:20London Heathrow

13h 08m

1 stop

BOI18:28Boise Air Term. Gowen Fld

£432

Find similar

Virgin Atlantic

4 Feb

GEG06:30Spokane

16h 35m

1 stop

LHR07:05London Heathrow

9 Feb

LHR06:30London Heathrow

22h 50m

2 stops

GEG21:20Spokane

£460

Find similar

KLM flights from Idaho to United Kingdom

Our best KLM deals on Idaho to United Kingdom flight tickets

KLM

12 Nov

GEG06:00Spokane

20h 00m

1 stop

LHR10:00London Heathrow

3 Dec

LHR06:30London Heathrow

16h 25m

2 stops

GEG14:55Spokane

£451

Find similar

KLM

12 Nov

GEG06:00Spokane

20h 00m

1 stop

LHR10:00London Heathrow

3 Dec

LHR11:05London Heathrow

17h 05m

1 stop

GEG20:10Spokane

£455

Find similar

KLM

17 Feb

BOI10:36Boise Air Term. Gowen Fld

16h 54m

1 stop

LHR10:30London Heathrow

24 Feb

LHR10:45London Heathrow

13h 48m

1 stop

BOI17:33Boise Air Term. Gowen Fld

£461

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

tir. 17/2

13:46-10:30

1 stop13h 44m

London Heathrow

tor. 26/2

11:20-22:49

1 stop18h 29m

£431

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

tir. 17/2

05:20-07:05

1 stop18h 45m

London Heathrow

tor. 26/2

12:20-18:28

1 stop13h 08m

£432

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

tir. 17/2

13:00-10:00

1 stop14h 00m

London Heathrow

fre. 27/2

06:20-18:28

2 stops19h 08m

£455

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

ons. 21/1

11:22-10:30

1 stop15h 08m

London Heathrow

ons. 4/2

06:20-18:47

2 stops20h 27m

£455

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

tir. 17/2

11:19-10:00

1 stop15h 41m

London Heathrow

fre. 27/2

06:20-23:59

2 stops24h 39m

£456

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

tir. 17/2

10:36-10:30

1 stop16h 54m

London Heathrow

tir. 24/2

10:45-17:33

1 stop13h 48m

£461

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

tir. 17/2

11:15-10:30

1 stop15h 15m

London Heathrow

ons. 4/3

11:05-19:59

1 stop16h 54m

£461

BoiseEdinburgh

BOI - EDI

BOIEDI

Boise Air Term. Gowen Fld

man. 12/1

07:20-15:15

2 stops24h 55m

Edinburgh Turnhouse

man. 19/1

18:35-19:25

2 stops31h 50m

£463

BoiseEdinburgh

BOI - EDI

BOIEDI

Boise Air Term. Gowen Fld

man. 12/1

07:20-15:15

2 stops24h 55m

Edinburgh Turnhouse

man. 19/1

18:35-19:25

2 stops31h 50m

£464

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

fre. 5/12

14:04-11:40

1 stop14h 36m

London Heathrow

ons. 24/12

11:20-21:25

1 stop17h 05m

£474

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 Idaho to United Kingdom

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 United Kingdom?

The cheapest month to fly to United Kingdom from Idaho is in October. Flight prices, which tend to average around £506, are often lower during this time because this is during the off-season. If you are unable to visit United Kingdom during the month of October, then departing from Idaho during the month April is also very affordable. Most momondo users find prices during this month for around £597.

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

The cheapest time of day to fly to United Kingdom is at midday when flights can be purchased for as low as £544. Try not to purchase tickets in the afternoon because they tend to be around £621. Of course, these prices can vary depending on the time of year and what airport you fly to.

How far in advance should I book a flight to United Kingdom?

You are more likely to see cheaper flights to United Kingdom from Idaho when booking week ahead of your departure date. In general, you can expect to find flights to United Kingdom for around £717 when searching week before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to United Kingdom from Idaho for as low as £477 on momondo.

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

You could potentially save up to 3% on your flight if you consider stops on a Idaho to United Kingdom flight.

Cheap Idaho to United Kingdom flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Idaho to United Kingdom

Direct flights	None

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

Search flight deals

When did momondo last update prices for flights from Idaho to United Kingdom?
Prices for flights from Idaho to United Kingdom were last updated today.
How many operators does momondo search for flights from Idaho to United Kingdom?
As of November 2025, there is 1 operator available to choose from for flights from Idaho to United Kingdom.
How old do you have to be to fly from Idaho to United Kingdom?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Idaho to United Kingdom.
What documentation or ID do you need to fly to United Kingdom?
The required travel and health documents for your United Kingdom trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at United Kingdom. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from Idaho to United Kingdom?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Idaho to United Kingdom. momondo saves you time and could save you money on your trip.

Can I find flights from Idaho to United Kingdom with flexible booking policies on momondo?

All flight searches from Idaho to United Kingdom on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Idaho to United Kingdom?

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 Idaho to United Kingdom.

I’m not ready to book a flight from Idaho to United Kingdom right now. Can momondo alert me if prices change?

Price alerts on flights to United Kingdom from Idaho are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.