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

Lufthansa, SWISS, and Delta are the most popular carriers operating from London to Idaho

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

Prices for flights from London to Idaho refresh daily.

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

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London to Idaho.

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

The required travel and health documents for your Idaho 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 Idaho. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$430 Cheap Flights from London to Idaho in 2026

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0 bags

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Find the cheapest flights from London to Idaho

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:40 am - 5:51 pm

LHR

GEG

17h 11m

1 stop

1:37 pm - 9:40 am

GEG

LHR

13h 03m

1 stop

$548United Airlines

Wed, Mar 18 - Mon, Mar 23

2:50 pm - 9:11 pm

LHR

GEG

14h 21m

1 stop

7:10 am - 6:45 am

GEG

LHR

15h 35m

1 stop

$560United Airlines

Wed, Apr 15 - Mon, Apr 20

7:40 am - 5:51 pm

LHR

GEG

17h 11m

1 stop

1:37 pm - 9:40 am

GEG

LHR

13h 03m

1 stop

$581United Airlines

Wed, Mar 18 - Mon, Mar 23

7:40 am - 9:03 pm

LHR

GEG

20h 23m

2 stops

12:42 pm - 8:50 pm

GEG

LHR

25h 08m

2 stops

$714Lufthansa

Mon, Mar 16 - Sun, Mar 22

6:35 am - 9:07 pm

LHR

GEG

22h 32m

2 stops

12:41 pm - 12:00 pm

GEG

LHR

15h 19m

1 stop

$717Lufthansa

Fri, Feb 27 - Fri, Mar 6

11:55 am - 9:37 pm

LGW

GEG

16h 42m

2 stops

12:00 pm - 10:55 am

GEG

LGW

15h 55m

2 stops

$809Icelandair

Tue, Mar 10 - Tue, Mar 17

11:55 am - 9:37 pm

LGW

GEG

16h 42m

2 stops

12:00 pm - 10:55 am

GEG

LGW

15h 55m

2 stops

$811Icelandair

Tue, Mar 10 - Tue, Mar 17

6:30 am - 6:22 pm

LHR

SUN

17h 52m

2 stops

12:00 pm - 11:50 am

SUN

LHR

17h 50m

2 stops

$873Multiple Airlines

Sat, Mar 14 - Sat, Mar 21

8:40 am - 7:57 pm

LCY

GEG

19h 17m

2 stops

11:22 am - 4:35 pm

GEG

LCY

21h 13m

2 stops

$900KLM

Thu, Feb 26 - Thu, Mar 5

9:25 am - 6:22 pm

LHR

SUN

14h 57m

1 stop

12:00 pm - 12:20 pm

SUN

LHR

18h 20m

1 stop

$950Multiple Airlines

Sat, Mar 14 - Sat, Mar 21

United Airlines flights from London to Idaho

Our best United Airlines deals on London to Idaho flight tickets

United Airlines

Mar 18

LHR7:40 amLondon Heathrow

17h 11m

1 stop

GEG5:51 pmSpokane

Mar 23

GEG1:37 pmSpokane

13h 03m

1 stop

LHR9:40 amLondon Heathrow

$548

United Airlines

Apr 15

LHR2:50 pmLondon Heathrow

14h 21m

1 stop

GEG9:11 pmSpokane

Apr 20

GEG7:10 amSpokane

15h 35m

1 stop

LHR6:45 amLondon Heathrow

$560

United Airlines

Mar 18

LHR7:40 amLondon Heathrow

17h 11m

1 stop

GEG5:51 pmSpokane

Mar 23

GEG1:37 pmSpokane

13h 03m

1 stop

LHR9:40 amLondon Heathrow

$581

Virgin Atlantic flights from London to Idaho

Our best Virgin Atlantic deals on London to Idaho flight tickets

Virgin Atlantic

Feb 26

LHR12:20 pmLondon Heathrow

13h 02m

1 stop

BOI6:22 pmBoise Air Term. Gowen Fld

Feb 28

BOI1:43 pmBoise Air Term. Gowen Fld

33h 42m

1 stop

LHR6:25 amLondon Heathrow

$1,039

Virgin Atlantic

Feb 26

LHR2:30 pmLondon Heathrow

12h 45m

1 stop

BOI8:15 pmBoise Air Term. Gowen Fld

Feb 28

BOI1:43 pmBoise Air Term. Gowen Fld

33h 42m

1 stop

LHR6:25 amLondon Heathrow

$1,070

Virgin Atlantic

Feb 7

LHR10:45 amLondon Heathrow

18h 10m

1 stop

SUN9:55 pmHailey Sun Valley-Friedman

Feb 14

SUN12:41 pmHailey Sun Valley-Friedman

14h 19m

1 stop

LHR10:00 amLondon Heathrow

$1,385

Fly from

Fly to

Route

Depart

Return

Price

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Wed 3/18

7:40 am-5:51 pm

1 stop17h 11m

Spokane

Mon 3/23

1:37 pm-9:40 am

1 stop13h 03m

$548

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Wed 4/15

2:50 pm-9:11 pm

1 stop14h 21m

Spokane

Mon 4/20

7:10 am-6:45 am

1 stop15h 35m

$560

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Wed 3/18

7:40 am-5:51 pm

1 stop17h 11m

Spokane

Mon 3/23

1:37 pm-9:40 am

1 stop13h 03m

$581

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Mon 3/16

7:40 am-9:03 pm

2 stops20h 23m

Spokane

Sun 3/22

12:42 pm-8:50 pm

2 stops25h 08m

$714

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Fri 2/27

6:35 am-9:07 pm

2 stops22h 32m

Spokane

Fri 3/6

12:41 pm-12:00 pm

1 stop15h 19m

$717

LondonSpokane

LGW - GEG

LGWGEG

London Gatwick

Tue 3/10

11:55 am-9:37 pm

2 stops16h 42m

Spokane

Tue 3/17

12:00 pm-10:55 am

2 stops15h 55m

$809

LondonSpokane

LGW - GEG

LGWGEG

London Gatwick

Tue 3/10

11:55 am-9:37 pm

2 stops16h 42m

Spokane

Tue 3/17

12:00 pm-10:55 am

2 stops15h 55m

$811

LondonHailey

LHR - SUN

LHRSUN

London Heathrow

Sat 3/14

6:30 am-6:22 pm

2 stops17h 52m

Hailey Sun Valley-Friedman

Sat 3/21

12:00 pm-11:50 am

2 stops17h 50m

$873

LondonSpokane

LCY - GEG

LCYGEG

London City

Thu 2/26

8:40 am-7:57 pm

2 stops19h 17m

Spokane

Thu 3/5

11:22 am-4:35 pm

2 stops21h 13m

$900

LondonHailey

LHR - SUN

LHRSUN

London Heathrow

Sat 3/14

9:25 am-6:22 pm

1 stop14h 57m

Hailey Sun Valley-Friedman

Sat 3/21

12:00 pm-12:20 pm

1 stop18h 20m

$950

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 London to Idaho

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

What is the cheapest month to fly to Idaho?

In general, January is the cheapest month to fly from London to Idaho. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $776. If you don’t want to visit Idaho in January, then you should wait until September to fly from London, when ticket prices are also cheap, with an average price of $785.

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

You are more likely to see cheaper flights to Idaho from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Idaho for around $993 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Idaho from London for as low as $766 on momondo.

Can stopping save me money on London to Idaho flights?

You could potentially save up to 14% on your flight if you consider stops on a London to Idaho flight.

Cheap London to Idaho flight deals and tips

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

Fastest flight time	13h 26m
Direct flights	None

The fastest flight from London to Idaho takes 13h 26m

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

Search flight deals

When did momondo last update prices for flights from London to Idaho?
Prices for flights from London to Idaho refresh daily.
How old do you have to be to fly from London to Idaho?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London to Idaho.
What documentation or ID do you need to fly to Idaho?
The required travel and health documents for your Idaho 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 Idaho. 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 London to Idaho?

It is quick and easy to find London to Idaho 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 Idaho that suits you.

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

Flights from London to Idaho with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo provides multiple filters to help you find the best flight to Idaho from London. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

If you are not ready to book a flight from London to Idaho now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Idaho and let you know when they change.