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

Air Canada, Lufthansa, and Delta 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 and arriving from 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 airlines fly to United Kingdom?

United Airlines, Delta and Virgin Atlantic are the top three most popular airlines that fly to United Kingdom from Idaho according to our data. United Airlines is the first choice among our users, with 41% of people opting to fly with this airline when traveling to United Kingdom. Keep in mind that there are 3 different airlines that fly to United Kingdom on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Idaho to United Kingdom refresh daily.

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

The number of operators available for flights from Idaho to United Kingdom is 3 as of May 2026.

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 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 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.

$291 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 round-trip flights

Enter your travel dates to find the best prices.

6:55 pm - 11:15 am

BOI

LHR

33h 20m

1 stop

11:05 am - 11:06 pm

LHR

BOI

43h 01m

2 stops

$740Brussels Airlines

Mon, Nov 9 - Thu, Nov 12

5:22 pm - 9:40 am

BOI

LHR

33h 18m

1 stop

6:50 am - 11:06 pm

LHR

BOI

23h 16m

2 stops

$752United Airlines

Mon, Nov 9 - Thu, Nov 12

4:05 pm - 7:25 am

BOI

LHR

32h 20m

1 stop

6:50 am - 11:06 pm

LHR

BOI

23h 16m

2 stops

$753United Airlines

Mon, Nov 9 - Thu, Nov 12

10:37 am - 12:25 pm

BOI

LHR

18h 48m

1 stop

6:55 am - 9:31 pm

LHR

BOI

21h 36m

2 stops

$862Lufthansa

Tue, Sep 29 - Tue, Oct 20

1:37 pm - 12:35 pm

GEG

LHR

14h 58m

1 stop

6:55 am - 10:16 pm

LHR

GEG

23h 21m

2 stops

$862Lufthansa

Wed, Sep 23 - Wed, Oct 14

12:15 pm - 10:55 am

IDA

LHR

15h 40m

1 stop

8:15 am - 9:20 pm

LHR

IDA

20h 05m

2 stops

$869American Airlines

Mon, Sep 14 - Tue, Sep 29

1:43 pm - 11:50 am

BOI

EDI

15h 07m

1 stop

9:00 am - 10:41 pm

EDI

BOI

20h 41m

1 stop

$872KLM

Tue, Oct 13 - Wed, Oct 21

11:10 am - 9:40 pm

GEG

LHR

26h 30m

2 stops

7:30 pm - 5:00 pm

LHR

GEG

29h 30m

2 stops

$875Scandinavian Airlines

Sun, Sep 20 - Mon, Sep 28

2:09 pm - 4:05 pm

GEG

EDI

17h 56m

2 stops

10:30 am - 8:25 pm

EDI

GEG

17h 55m

2 stops

$896American Airlines

Wed, Sep 9 - Wed, Sep 23

10:50 am - 10:10 am

GEG

MAN

15h 20m

2 stops

5:55 am - 4:06 pm

MAN

GEG

18h 11m

2 stops

$928KLM

Wed, Sep 9 - Wed, Oct 7

Scandinavian Airlines flights from Idaho to United Kingdom

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

Scandinavian Airlines

Sep 20

GEG11:10 amSpokane

26h 30m

2 stops

LHR9:40 pmLondon Heathrow

Sep 28

LHR7:30 pmLondon Heathrow

29h 30m

2 stops

GEG5:00 pmSpokane

$875

Scandinavian Airlines

Sep 20

GEG11:10 amSpokane

21h 15m

3 stops

LHR4:25 pmLondon Heathrow

Sep 28

LHR7:30 pmLondon Heathrow

29h 30m

2 stops

GEG5:00 pmSpokane

$884

Scandinavian Airlines

Sep 15

BOI10:35 amBoise Air Term. Gowen Fld

24h 05m

2 stops

LHR5:40 pmLondon Heathrow

Sep 28

LHR7:50 pmLondon Heathrow

29h 50m

3 stops

BOI6:40 pmBoise Air Term. Gowen Fld

$885

Virgin Atlantic flights from Idaho to United Kingdom

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

Virgin Atlantic

Sep 1

BOI11:12 amBoise Air Term. Gowen Fld

17h 08m

2 stops

LHR11:20 amLondon Heathrow

Sep 8

LHR6:15 amLondon Heathrow

19h 20m

2 stops

BOI6:35 pmBoise Air Term. Gowen Fld

$889

Virgin Atlantic

Nov 1

GEG7:00 amSpokane

16h 05m

1 stop

LHR7:05 amLondon Heathrow

Nov 8

LHR6:30 amLondon Heathrow

20h 57m

2 stops

GEG7:27 pmSpokane

$927

Virgin Atlantic

Jun 3

BOI1:53 pmBoise Air Term. Gowen Fld

14h 57m

1 stop

EDI11:50 amEdinburgh Turnhouse

Jun 24

EDI11:20 amEdinburgh Turnhouse

19h 35m

2 stops

BOI11:55 pmBoise Air Term. Gowen Fld

$1,436

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Mon 11/9

6:55 pm-11:15 am

1 stop33h 20m

London Heathrow

Thu 11/12

11:05 am-11:06 pm

2 stops43h 01m

$740

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Mon 11/9

5:22 pm-9:40 am

1 stop33h 18m

London Heathrow

Thu 11/12

6:50 am-11:06 pm

2 stops23h 16m

$752

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Mon 11/9

4:05 pm-7:25 am

1 stop32h 20m

London Heathrow

Thu 11/12

6:50 am-11:06 pm

2 stops23h 16m

$753

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 9/29

10:37 am-12:25 pm

1 stop18h 48m

London Heathrow

Tue 10/20

6:55 am-9:31 pm

2 stops21h 36m

$862

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Wed 9/23

1:37 pm-12:35 pm

1 stop14h 58m

London Heathrow

Wed 10/14

6:55 am-10:16 pm

2 stops23h 21m

$862

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Mon 9/14

12:15 pm-10:55 am

1 stop15h 40m

London Heathrow

Tue 9/29

8:15 am-9:20 pm

2 stops20h 05m

$869

BoiseEdinburgh

BOI - EDI

BOIEDI

Boise Air Term. Gowen Fld

Tue 10/13

1:43 pm-11:50 am

1 stop15h 07m

Edinburgh Turnhouse

Wed 10/21

9:00 am-10:41 pm

1 stop20h 41m

$872

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Sun 9/20

11:10 am-9:40 pm

2 stops26h 30m

London Heathrow

Mon 9/28

7:30 pm-5:00 pm

2 stops29h 30m

$875

SpokaneEdinburgh

GEG - EDI

GEGEDI

Spokane

Wed 9/9

2:09 pm-4:05 pm

2 stops17h 56m

Edinburgh Turnhouse

Wed 9/23

10:30 am-8:25 pm

2 stops17h 55m

$896

Quickest round-trip

SpokaneManchester

GEG - MAN

GEGMAN

Spokane

Wed 9/9

10:50 am-10:10 am

2 stops15h 20m

Manchester

Wed 10/7

5:55 am-4:06 pm

2 stops18h 11m

$928

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 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?

In general, October is the cheapest month to fly from Idaho to United Kingdom. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $399. If you aren’t able to travel to United Kingdom during the month of October, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $547.

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

You could potentially save up to 2% 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.

Search flight deals

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 refresh daily.
How many operators does momondo search for flights from Idaho to United Kingdom?
The number of operators available for flights from Idaho to United Kingdom is 3 as of May 2026.
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 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 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.

Best airlines flying from Idaho to United Kingdom

Compare and see reviews for airlines that fly from Idaho to United Kingdom with momondo

Airline	Rating	Free Cancellation	Price
Virgin Atlantic	PriceFrom $600	Free Cancellation	Rating 7.5 689 reviews	Search Virgin Atlantic flights
Delta	PriceFrom $627	Free Cancellation	Rating 7.9 8,425 reviews	Search Delta flights
United Airlines	PriceFrom $639	Free Cancellation	Rating 7.4 9,750 reviews	Search United Airlines flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Idaho to United Kingdom for you.

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

Yes. momondo enables you to select and highlight flights to United Kingdom from Idaho with this policy.

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

Once you have performed a search for Idaho to United Kingdom flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are simply researching potential flights to United Kingdom, momondo offers a useful price alert feature which will track prices for flights to United Kingdom from Idaho and alert you when they change.