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 Idaho Falls (a popular airport in Idaho) to London Heathrow Airport (the most popular airport in United Kingdom), then the flight time is 11h 42m on average. If you fly from Boise (another popular airport in Idaho) to London Heathrow Airport, then the average flight time is 11h 56m.

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

Lufthansa, Delta, and KLM 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 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.

£216 Cheap Flights from Idaho to the United Kingdom in 2026

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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.

18:55 - 11:15

BOI

LHR

33h 20m

1 stop

11:05 - 23:06

LHR

BOI

43h 01m

2 stops

£549Brussels Airlines

Mon, 9 Nov - Thu, 12 Nov

16:05 - 07:25

BOI

LHR

32h 20m

1 stop

06:50 - 23:06

LHR

BOI

23h 16m

2 stops

£558United Airlines

Mon, 9 Nov - Thu, 12 Nov

12:42 - 16:00

BOI

LHR

20h 18m

2 stops

17:00 - 23:08

LHR

BOI

37h 08m

2 stops

£601Scandinavian Airlines

Sun, 4 Oct - Mon, 12 Oct

10:37 - 12:25

BOI

LHR

18h 48m

1 stop

06:55 - 21:31

LHR

BOI

21h 36m

2 stops

£640Lufthansa

Tue, 29 Sep - Tue, 20 Oct

13:37 - 12:35

GEG

LHR

14h 58m

1 stop

06:55 - 22:16

LHR

GEG

23h 21m

2 stops

£640Lufthansa

Wed, 23 Sep - Wed, 14 Oct

12:15 - 10:55

IDA

LHR

15h 40m

1 stop

08:15 - 21:20

LHR

IDA

20h 05m

2 stops

£645American Airlines

Mon, 14 Sep - Tue, 29 Sep

13:43 - 11:50

BOI

EDI

15h 07m

1 stop

09:00 - 22:41

EDI

BOI

20h 41m

1 stop

£647KLM

Tue, 13 Oct - Wed, 21 Oct

11:10 - 21:40

GEG

LHR

26h 30m

2 stops

19:30 - 17:00

LHR

GEG

29h 30m

2 stops

£650Scandinavian Airlines

Sun, 20 Sep - Mon, 28 Sep

13:43 - 11:15

IDA

LHR

14h 32m

1 stop

08:55 - 21:22

LHR

IDA

19h 27m

1 stop

£673American Airlines

Wed, 7 Oct - Tue, 13 Oct

10:50 - 10:10

GEG

MAN

15h 20m

2 stops

05:55 - 16:06

MAN

GEG

18h 11m

2 stops

£689KLM

Wed, 9 Sep - Wed, 7 Oct

Scandinavian Airlines flights from Idaho to United Kingdom

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

Scandinavian Airlines

20 Sept

GEG11:10Spokane

26h 30m

2 stops

LHR21:40London Heathrow

28 Sept

LHR19:30London Heathrow

29h 30m

2 stops

GEG17:00Spokane

£650

Scandinavian Airlines

20 Sept

GEG11:10Spokane

21h 15m

3 stops

LHR16:25London Heathrow

28 Sept

LHR19:30London Heathrow

29h 30m

2 stops

GEG17:00Spokane

£656

Scandinavian Airlines

15 Sept

BOI10:35Boise Air Term. Gowen Fld

24h 05m

2 stops

LHR17:40London Heathrow

28 Sept

LHR19:50London Heathrow

29h 50m

3 stops

BOI18:40Boise Air Term. Gowen Fld

£657

Virgin Atlantic flights from Idaho to United Kingdom

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

Virgin Atlantic

1 Sept

BOI11:12Boise Air Term. Gowen Fld

17h 08m

2 stops

LHR11:20London Heathrow

8 Sept

LHR06:15London Heathrow

19h 20m

2 stops

BOI18:35Boise Air Term. Gowen Fld

£660

Virgin Atlantic

1 Nov

GEG07:00Spokane

16h 05m

1 stop

LHR07:05London Heathrow

8 Nov

LHR06:30London Heathrow

20h 57m

2 stops

GEG19:27Spokane

£688

Virgin Atlantic

6 Jun

GEG17:39Spokane

34h 31m

1 stop

LHR12:10London Heathrow

17 Jun

LHR11:40London Heathrow

20h 15m

1 stop

GEG23:55Spokane

£956

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Mon 9/11

18:55-11:15

1 stop33h 20m

London Heathrow

Thu 12/11

11:05-23:06

2 stops43h 01m

£549

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Mon 9/11

16:05-07:25

1 stop32h 20m

London Heathrow

Thu 12/11

06:50-23:06

2 stops23h 16m

£558

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Sun 4/10

12:42-16:00

2 stops20h 18m

London Heathrow

Mon 12/10

17:00-23:08

2 stops37h 08m

£601

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 29/9

10:37-12:25

1 stop18h 48m

London Heathrow

Tue 20/10

06:55-21:31

2 stops21h 36m

£640

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Wed 23/9

13:37-12:35

1 stop14h 58m

London Heathrow

Wed 14/10

06:55-22:16

2 stops23h 21m

£640

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Mon 14/9

12:15-10:55

1 stop15h 40m

London Heathrow

Tue 29/9

08:15-21:20

2 stops20h 05m

£645

BoiseEdinburgh

BOI - EDI

BOIEDI

Boise Air Term. Gowen Fld

Tue 13/10

13:43-11:50

1 stop15h 07m

Edinburgh Turnhouse

Wed 21/10

09:00-22:41

1 stop20h 41m

£647

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Sun 20/9

11:10-21:40

2 stops26h 30m

London Heathrow

Mon 28/9

19:30-17:00

2 stops29h 30m

£650

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Wed 7/10

13:43-11:15

1 stop14h 32m

London Heathrow

Tue 13/10

08:55-21:22

1 stop19h 27m

£673

Fastest return journey

SpokaneManchester

GEG - MAN

GEGMAN

Spokane

Wed 9/9

10:50-10:10

2 stops15h 20m

Manchester

Wed 7/10

05:55-16:06

2 stops18h 11m

£689

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 £296, 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 November is also very affordable. Most momondo users find prices during this month for around £406.

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

Fastest flight time	11h 42m
Direct flights	None

The fastest flight from Idaho to United Kingdom takes 11h 42m

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

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Frequently asked questions about flying from Idaho to the 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 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.