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 31m on average. If you fly from Boise (another popular airport in Idaho) to London Heathrow Airport, then the average flight time is 14h 08m.

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

Delta, Lufthansa, 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.

£231 Cheap Flights from Idaho to the United Kingdom in 2026

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Find the cheapest flights from Idaho to the United Kingdom

Return

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

17:40 - 09:40

IDA

LHR

33h 00m

1 stop

06:35 - 17:22

LHR

IDA

17h 47m

2 stops

£615United Airlines

Mon, 30 Nov - Thu, 3 Dec

16:03 - 17:00

GEG

MAN

40h 57m

2 stops

06:10 - 12:18

MAN

GEG

38h 08m

2 stops

£616United Airlines

Sun, 8 Nov - Wed, 11 Nov

13:51 - 15:15

BOI

EDI

18h 24m

2 stops

11:05 - 23:37

EDI

BOI

19h 32m

2 stops

£646Multiple Airlines

Sun, 1 Nov - Wed, 11 Nov

13:46 - 13:45

IDA

LHR

16h 59m

1 stop

08:15 - 21:42

LHR

IDA

20h 27m

2 stops

£649Multiple Airlines

Wed, 7 Oct - Tue, 13 Oct

05:25 - 10:00

GEG

LHR

20h 35m

1 stop

06:15 - 20:55

LHR

GEG

22h 40m

2 stops

£652Iberia

Wed, 18 Nov - Wed, 25 Nov

05:25 - 10:00

GEG

LHR

20h 35m

1 stop

07:35 - 20:55

LHR

GEG

21h 20m

2 stops

£652Iberia

Wed, 18 Nov - Wed, 25 Nov

12:14 - 16:00

BOI

LHR

20h 46m

2 stops

06:40 - 18:40

LHR

BOI

19h 00m

2 stops

£652Scandinavian Airlines

Tue, 8 Sep - Tue, 22 Sep

16:00 - 15:00

BOI

LHR

16h 00m

1 stop

06:30 - 18:33

LHR

BOI

19h 03m

2 stops

£655Delta

Wed, 7 Oct - Tue, 13 Oct

07:00 - 07:10

GEG

LHR

16h 10m

2 stops

06:30 - 23:42

LHR

GEG

24h 12m

2 stops

£657Delta

Wed, 14 Oct - Wed, 28 Oct

12:14 - 16:00

BOI

LHR

20h 46m

2 stops

14:20 - 18:39

LHR

BOI

35h 19m

2 stops

£670Scandinavian Airlines

Sat, 26 Sep - Sat, 3 Oct

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United Airlines flights from Idaho to United Kingdom

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

United Airlines

30 Nov

IDA17:40Idaho Falls Fanning Field

33h 00m

1 stop

LHR09:40London Heathrow

3 Dec

LHR06:35London Heathrow

17h 47m

2 stops

IDA17:22Idaho Falls Fanning Field

£615

United Airlines

8 Nov

GEG16:03Spokane

40h 57m

2 stops

MAN17:00Manchester

11 Nov

MAN06:10Manchester

38h 08m

2 stops

GEG12:18Spokane

£617

United Airlines

30 Nov

IDA17:40Idaho Falls Fanning Field

33h 00m

1 stop

LHR09:40London Heathrow

3 Dec

LHR06:35London Heathrow

33h 53m

2 stops

IDA09:28Idaho Falls Fanning Field

£619

KLM flights from Idaho to United Kingdom

Our best KLM deals on Idaho to United Kingdom flight tickets

KLM

3 Nov

IDA06:00Idaho Falls Fanning Field

18h 05m

2 stops

LHR07:05London Heathrow

10 Nov

LHR17:50London Heathrow

31h 24m

2 stops

IDA18:14Idaho Falls Fanning Field

£658

KLM

7 Oct

IDA18:56Idaho Falls Fanning Field

14h 19m

2 stops

LHR16:15London Heathrow

13 Oct

LHR20:55London Heathrow

28h 21m

2 stops

IDA18:16Idaho Falls Fanning Field

£661

KLM

30 Dec

IDA13:10Idaho Falls Fanning Field

13h 50m

1 stop

LHR10:00London Heathrow

7 Jan

LHR10:45London Heathrow

14h 29m

1 stop

IDA18:14Idaho Falls Fanning Field

£718

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Mon 30/11

17:40-09:40

1 stop33h 00m

London Heathrow

Thu 3/12

06:35-17:22

2 stops17h 47m

£615

SpokaneManchester

GEG - MAN

GEGMAN

Spokane

Sun 8/11

16:03-17:00

2 stops40h 57m

Manchester

Wed 11/11

06:10-12:18

2 stops38h 08m

£616

BoiseEdinburgh

BOI - EDI

BOIEDI

Boise Air Term. Gowen Fld

Sun 1/11

13:51-15:15

2 stops18h 24m

Edinburgh Turnhouse

Wed 11/11

11:05-23:37

2 stops19h 32m

£646

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Wed 7/10

13:46-13:45

1 stop16h 59m

London Heathrow

Tue 13/10

08:15-21:42

2 stops20h 27m

£649

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Wed 18/11

05:25-10:00

1 stop20h 35m

London Heathrow

Wed 25/11

06:15-20:55

2 stops22h 40m

£652

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Wed 18/11

05:25-10:00

1 stop20h 35m

London Heathrow

Wed 25/11

07:35-20:55

2 stops21h 20m

£652

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 8/9

12:14-16:00

2 stops20h 46m

London Heathrow

Tue 22/9

06:40-18:40

2 stops19h 00m

£652

Fastest return journey

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Wed 7/10

16:00-15:00

1 stop16h 00m

London Heathrow

Tue 13/10

06:30-18:33

2 stops19h 03m

£655

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Wed 14/10

07:00-07:10

2 stops16h 10m

London Heathrow

Wed 28/10

06:30-23:42

2 stops24h 12m

£657

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Sat 26/9

12:14-16:00

2 stops20h 46m

London Heathrow

Sat 3/10

14:20-18:39

2 stops35h 19m

£670

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 £298, 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 £409.

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 31m
Direct flights	None

The fastest flight from Idaho to United Kingdom takes 11h 31m

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.