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

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

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 51m on average. If you fly from Idaho Falls (another popular airport in Idaho) to London Heathrow Airport, then the average flight time is 11h 54m.

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.

£257 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.

22:40 - 07:05

GEG

EDI

24h 25m

2 stops

14:05 - 23:35

EDI

GEG

17h 30m

2 stops

£478Delta

Mon, 4 May - Wed, 13 May

18:26 - 18:35

BOI

EDI

17h 09m

2 stops

10:25 - 22:54

EDI

BOI

19h 29m

2 stops

£478American Airlines

Mon, 11 May - Wed, 20 May

17:29 - 12:20

BOI

LHR

11h 51m

1 stop

10:50 - 09:54

LHR

BOI

30h 04m

2 stops

£481United Airlines

Sun, 12 Apr - Tue, 28 Apr

09:00 - 12:10

BOI

LHR

20h 10m

1 stop

06:15 - 16:14

LHR

BOI

16h 59m

2 stops

£486Delta

Sun, 12 Apr - Tue, 28 Apr

06:00 - 06:50

GEG

LHR

17h 50m

2 stops

11:05 - 21:29

LHR

GEG

17h 24m

1 stop

£493Virgin Atlantic

Thu, 19 Mar - Thu, 26 Mar

13:45 - 15:35

BOI

LHR

18h 50m

1 stop

14:30 - 23:00

LHR

BOI

15h 30m

1 stop

£495KLM

Sun, 12 Apr - Tue, 28 Apr

13:45 - 15:35

BOI

LHR

18h 50m

1 stop

09:55 - 23:00

LHR

BOI

20h 05m

1 stop

£502KLM

Sun, 12 Apr - Tue, 28 Apr

05:00 - 08:35

BOI

LHR

20h 35m

2 stops

14:05 - 11:49

LHR

BOI

28h 44m

2 stops

£504Air Canada

Sun, 12 Apr - Tue, 28 Apr

06:15 - 10:00

BOI

LHR

20h 45m

2 stops

09:30 - 09:54

LHR

BOI

31h 24m

2 stops

£507Air Canada

Sun, 12 Apr - Tue, 28 Apr

14:37 - 12:20

BOI

LHR

14h 43m

1 stop

09:00 - 22:35

LHR

BOI

20h 35m

2 stops

£518United Airlines

Wed, 22 Apr - Sun, 26 Apr

United Airlines flights from Idaho to United Kingdom

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

United Airlines

12 Apr

BOI17:29Boise Air Term. Gowen Fld

11h 51m

1 stop

LHR12:20London Heathrow

28 Apr

LHR10:50London Heathrow

30h 04m

2 stops

BOI09:54Boise Air Term. Gowen Fld

£481

United Airlines

14 Apr

GEG12:35Spokane

14h 35m

1 stop

LHR11:10London Heathrow

25 Apr

LHR07:25London Heathrow

22h 10m

2 stops

GEG21:35Spokane

£518

United Airlines

14 Apr

GEG05:05Spokane

17h 25m

2 stops

LHR06:30London Heathrow

25 Apr

LHR07:25London Heathrow

22h 10m

2 stops

GEG21:35Spokane

£521

Delta flights from Idaho to United Kingdom

Our best Delta deals on Idaho to United Kingdom flight tickets

Delta

4 May

GEG22:40Spokane

24h 25m

2 stops

EDI07:05Edinburgh Turnhouse

13 May

EDI14:05Edinburgh Turnhouse

17h 30m

2 stops

GEG23:35Spokane

£478

Delta

12 Apr

BOI09:00Boise Air Term. Gowen Fld

20h 10m

1 stop

LHR12:10London Heathrow

28 Apr

LHR06:15London Heathrow

16h 59m

2 stops

BOI16:14Boise Air Term. Gowen Fld

£486

Delta

14 Apr

GEG11:25Spokane

16h 45m

1 stop

LHR12:10London Heathrow

25 Apr

LHR06:15London Heathrow

20h 42m

2 stops

GEG18:57Spokane

£523

Fly from

Fly to

Route

Depart

Return

Price

SpokaneEdinburgh

GEG - EDI

GEGEDI

Spokane

Mon 4/5

22:40-07:05

2 stops24h 25m

Edinburgh Turnhouse

Wed 13/5

14:05-23:35

2 stops17h 30m

£478

BoiseEdinburgh

BOI - EDI

BOIEDI

Boise Air Term. Gowen Fld

Mon 11/5

18:26-18:35

2 stops17h 09m

Edinburgh Turnhouse

Wed 20/5

10:25-22:54

2 stops19h 29m

£478

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Sun 12/4

17:29-12:20

1 stop11h 51m

London Heathrow

Tue 28/4

10:50-09:54

2 stops30h 04m

£481

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Sun 12/4

09:00-12:10

1 stop20h 10m

London Heathrow

Tue 28/4

06:15-16:14

2 stops16h 59m

£486

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Thu 19/3

06:00-06:50

2 stops17h 50m

London Heathrow

Thu 26/3

11:05-21:29

1 stop17h 24m

£493

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Sun 12/4

13:45-15:35

1 stop18h 50m

London Heathrow

Tue 28/4

14:30-23:00

1 stop15h 30m

£495

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Sun 12/4

13:45-15:35

1 stop18h 50m

London Heathrow

Tue 28/4

09:55-23:00

1 stop20h 05m

£502

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Sun 12/4

05:00-08:35

2 stops20h 35m

London Heathrow

Tue 28/4

14:05-11:49

2 stops28h 44m

£504

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Sun 12/4

06:15-10:00

2 stops20h 45m

London Heathrow

Tue 28/4

09:30-09:54

2 stops31h 24m

£507

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Wed 22/4

14:37-12:20

1 stop14h 43m

London Heathrow

Sun 26/4

09:00-22:35

2 stops20h 35m

£518

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 £520, 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 £528.

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 51m
Direct flights	None

The fastest flight from Idaho to United Kingdom takes 11h 51m

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 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.