How long does it take to fly to London?

Flight times from Idaho to London vary, but if you’re flying out of Lewiston and flying into London Heathrow Airport (one of the most popular routes), then the duration is 11h 50m on average. Another popular route from Idaho to London is flying from Boise to London Heathrow Airport, which will take roughly 14h 05m. Keep in mind that layovers or delays could extend your travel time.

What is the cheapest airline that flies from Idaho to London?

Virgin Atlantic, United Airlines, and KLM are the most popular carriers operating from Idaho to London

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

Prices for flights from Idaho to London are updated daily.

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

As of August 2025, there is 1 operator available to choose from for flights from Idaho to London.

How old do you have to be to fly from Idaho to London?

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 London.

What documentation or ID do you need to fly to London?

The travel and health documents required for your trip to London can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

£211 Cheap Flights from Idaho to London in 2025

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Find the cheapest flights from Idaho to London

Round-trip

One-way

Last minute

Cheap return flights

13:00 - 10:00GEG-LHR

13h 00m1 stop

06:20 - 18:47LHR-GEG

20h 27m2 stops

£441Delta

Find Deal

Wed, 5 Nov - Wed, 19 Nov

06:00 - 06:25GEG-LHR

16h 25m2 stops

06:20 - 18:18LHR-GEG

19h 58m2 stops

£444Delta

Find Deal

Wed, 5 Nov - Wed, 19 Nov

09:45 - 10:00GEG-LHR

16h 15m1 stop

10:45 - 18:18LHR-GEG

15h 33m1 stop

£446KLM

Find Deal

Wed, 5 Nov - Wed, 19 Nov

07:00 - 12:20BOI-LHR

22h 20m1 stop

13:25 - 11:39LHR-BOI

29h 14m2 stops

£451United Airlines

Find Deal

Tue, 14 Oct - Tue, 11 Nov

10:48 - 09:40BOI-LHR

15h 52m1 stop

16:00 - 11:39LHR-BOI

26h 39m2 stops

£456United Airlines

Find Deal

Sun, 21 Sep - Fri, 3 Oct

13:16 - 10:30GEG-LHR

14h 14m1 stop

11:05 - 19:46LHR-GEG

16h 41m1 stop

£457KLM

Find Deal

Tue, 28 Oct - Thu, 6 Nov

07:00 - 06:25BOI-LHR

16h 25m1 stop

10:30 - 21:48LHR-BOI

18h 18m1 stop

£468Finnair

Find Deal

Tue, 23 Sep - Wed, 1 Oct

17:39 - 06:30BOI-LHR

29h 51m2 stops

17:40 - 18:47LHR-BOI

32h 07m2 stops

£469Air Canada

Find Deal

Sat, 20 Sep - Thu, 2 Oct

17:39 - 06:30BOI-LHR

29h 51m2 stops

14:05 - 09:42LHR-BOI

26h 37m2 stops

£484Air Canada

Find Deal

Sat, 20 Sep - Wed, 1 Oct

07:00 - 06:25BOI-LHR

16h 25m1 stop

12:00 - 21:48LHR-BOI

16h 48m1 stop

£572Finnair

Find Deal

Wed, 17 Sep - Fri, 3 Oct

American Airlines flights from Idaho to London

Our best American Airlines deals on Idaho to London flight tickets

American Airlines

13 Nov

JAC13:11Jackson Hole

16h 04m

1 stop

LHR12:15London Heathrow

16 Nov

LHR15:25London Heathrow

27h 51m

2 stops

JAC12:16Jackson Hole

£562

Find similar

American Airlines

13 Nov

JAC13:11Jackson Hole

13h 49m

1 stop

LHR10:00London Heathrow

16 Nov

LHR08:20London Heathrow

34h 56m

1 stop

JAC12:16Jackson Hole

£563

Find similar

American Airlines

25 Sept

JAC15:19Jackson Hole

12h 46m

1 stop

LHR11:05London Heathrow

5 Oct

LHR09:15London Heathrow

13h 13m

1 stop

JAC15:28Jackson Hole

£632

Find similar

Virgin Atlantic flights from Idaho to London

Our best Virgin Atlantic deals on Idaho to London flight tickets

Virgin Atlantic

2 Sept

BOI12:45Boise Air Term. Gowen Fld

15h 35m

2 stops

LHR11:20London Heathrow

16 Sept

LHR13:25London Heathrow

17h 50m

2 stops

BOI00:15Boise Air Term. Gowen Fld

£472

Find similar

Virgin Atlantic

28 Oct

GEG06:00Spokane

17h 50m

2 stops

LHR06:50London Heathrow

8 Nov

LHR08:40London Heathrow

19h 06m

2 stops

GEG19:46Spokane

£494

Find similar

Virgin Atlantic

20 Sept

GEG17:30Spokane

12h 45m

1 stop

LHR14:15London Heathrow

27 Sept

LHR10:55London Heathrow

19h 34m

1 stop

GEG22:29Spokane

£541

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Wed 5/11

13:00-10:00

1 stop13h 00m

London Heathrow

Wed 19/11

06:20-18:47

2 stops20h 27m

£441

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Wed 5/11

06:00-06:25

2 stops16h 25m

London Heathrow

Wed 19/11

06:20-18:18

2 stops19h 58m

£444

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Wed 5/11

09:45-10:00

1 stop16h 15m

London Heathrow

Wed 19/11

10:45-18:18

1 stop15h 33m

£446

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 14/10

07:00-12:20

1 stop22h 20m

London Heathrow

Tue 11/11

13:25-11:39

2 stops29h 14m

£451

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Sun 21/9

10:48-09:40

1 stop15h 52m

London Heathrow

Fri 3/10

16:00-11:39

2 stops26h 39m

£456

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Tue 28/10

13:16-10:30

1 stop14h 14m

London Heathrow

Thu 6/11

11:05-19:46

1 stop16h 41m

£457

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 23/9

07:00-06:25

1 stop16h 25m

London Heathrow

Wed 1/10

10:30-21:48

1 stop18h 18m

£468

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Sat 20/9

17:39-06:30

2 stops29h 51m

London Heathrow

Thu 2/10

17:40-18:47

2 stops32h 07m

£469

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Sat 20/9

17:39-06:30

2 stops29h 51m

London Heathrow

Wed 1/10

14:05-09:42

2 stops26h 37m

£484

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Wed 17/9

07:00-06:25

1 stop16h 25m

London Heathrow

Fri 3/10

12:00-21:48

1 stop16h 48m

£572

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 London

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 London?

The cheapest month to fly to London from Idaho is in October. Flight prices, which tend to average around £560, are often lower during this time because this is during the off-season. The month of February is another great option to travel to London, with average flight prices from Idaho averaging around £587.

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

The cheapest time of day to fly to London is at midday when flights can be purchased for as low as £531. Flights in the afternoon are often more expensive, with an average ticket price of £607.

How far in advance should I book a flight to London?

You are more likely to see cheaper flights to London from Idaho when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around £703 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Idaho for as low as £431 on momondo.

Cheap Idaho to London flight deals and tips

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

Best price found	£211
Fastest flight time	11h 41m
Direct flights	None
Airports in London	3 airports

The best one-way flight to London from Idaho in the past 72 hours is £211. The best return flight deal from Idaho to London found on momondo in the last 72 hours is £441.

The fastest flight from Idaho to London takes 11h 41m

There are no direct flights from Idaho to London. Popular non-direct routes for this connection are Spokane Airport - London Heathrow Airport, Boise Air Term. Gowen Fld Airport - London Heathrow Airport and Spokane Airport - London Gatwick Airport.

There are 3 airports near London: London City (LCY), London Heathrow (LHR), London Gatwick (LGW)

Search flight deals

When did momondo last update prices for flights from Idaho to London?
Prices for flights from Idaho to London are updated daily.
How many operators does momondo search for flights from Idaho to London?
As of August 2025, there is 1 operator available to choose from for flights from Idaho to London.
How old do you have to be to fly from Idaho to London?
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 London.
What documentation or ID do you need to fly to London?
The travel and health documents required for your trip to London can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Idaho to London

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

Airline	Rating	Free Cancellation	Price
Virgin Atlantic	PriceFrom £510	Free Cancellation	Rating 7.4 657 reviews		Search Virgin Atlantic flights

Eastbourne

Milton Keynes

Luton

Slough

Maidstone

Southend-on-Sea

Canterbury

Gatwick

Ipswich

Ilford

Guildford

Colchester

Dartford

Hounslow

Worthing

Dover

Chelmsford

Hayes

Winchester

Bedford

Why use momondo?

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

It is quick and easy to find Idaho to London flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to London that suits you.

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

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

How can momondo help me find flights from Idaho to London?

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 London.

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

Yes momondo offers price alerts on flights to London from Idaho. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.