Which airlines fly to Idaho?

United Airlines, Virgin Atlantic and Lufthansa are the top three most popular airlines that fly to Idaho from London according to our data. United Airlines is the first choice among our users, with 40% of people opting to fly with this airline when travelling to Idaho. Keep in mind that there are 5 different airlines that fly to Idaho on a routine basis, so you have a few additional options to choose from.

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

American Airlines, Delta, and Finnair 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 are refreshed on a daily basis.

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

As of October 2025, there are 5 operators available to choose from for flights from London to Idaho.

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.

£342 Cheap Flights from London to Idaho in 2025/26

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from London to Idaho

Round-trip

One-way

Cheap return flights

Enter your travel dates to find the best prices.

09:00 - 23:29LHR-GEG

22h 29m2 stops

16:05 - 09:40GEG-LHR

33h 35m1 stop

£550United Airlines

Find Deal

Wed, 19 Nov - Wed, 26 Nov

09:00 - 23:29LHR-GEG

22h 29m2 stops

06:00 - 07:25GEG-LHR

17h 25m1 stop

£551United Airlines

Find Deal

Tue, 4 Nov - Tue, 11 Nov

07:40 - 09:59LHR-BOI

33h 19m2 stops

13:50 - 13:30BOI-LHR

16h 40m1 stop

£553United Airlines

Find Deal

Mon, 8 Dec - Tue, 16 Dec

06:35 - 21:24LHR-GEG

21h 49m2 stops

05:00 - 07:10GEG-LHR

19h 10m2 stops

£554United Airlines

Find Deal

Tue, 10 Mar - Tue, 17 Mar

07:40 - 20:45LHR-GEG

21h 05m2 stops

06:00 - 12:00GEG-LHR

22h 00m1 stop

£556Lufthansa

Find Deal

Thu, 20 Nov - Thu, 27 Nov

11:35 - 18:07LHR-BOI

13h 32m1 stop

12:29 - 07:55BOI-LHR

12h 26m1 stop

£565Lufthansa

Find Deal

Tue, 10 Feb - Wed, 18 Feb

08:20 - 21:49LHR-GEG

20h 29m1 stop

05:25 - 08:35GEG-LHR

19h 10m1 stop

£725Iberia

Find Deal

Mon, 27 Oct - Mon, 3 Nov

10:45 - 18:15LHR-JAC

14h 30m1 stop

12:57 - 10:00JAC-LHR

14h 03m1 stop

£832Virgin Atlantic

Find Deal

Wed, 5 Nov - Wed, 12 Nov

20:25 - 17:10LHR-JAC

27h 45m2 stops

12:57 - 11:40JAC-LHR

15h 43m2 stops

£841KLM

Find Deal

Thu, 20 Nov - Thu, 27 Nov

11:40 - 22:49LHR-GEG

19h 09m2 stops

13:12 - 07:50GEG-LHR

34h 38m2 stops

£862Virgin Atlantic

Find Deal

Sat, 6 Dec - Sat, 27 Dec

Scandinavian Airlines flights from London to Idaho

Our best Scandinavian Airlines deals on London to Idaho flight tickets

Scandinavian Airlines

8 Dec

LHR07:05London Heathrow

22h 00m

3 stops

BOI22:05Boise Air Term. Gowen Fld

15 Dec

BOI15:54Boise Air Term. Gowen Fld

19h 36m

2 stops

LHR18:30London Heathrow

£620

Find similar

Scandinavian Airlines

8 Dec

LHR07:05London Heathrow

22h 00m

3 stops

BOI22:05Boise Air Term. Gowen Fld

15 Dec

BOI15:54Boise Air Term. Gowen Fld

22h 41m

3 stops

LHR21:35London Heathrow

£623

Find similar

Scandinavian Airlines

8 Dec

LHR06:40London Heathrow

22h 25m

3 stops

BOI22:05Boise Air Term. Gowen Fld

15 Dec

BOI15:54Boise Air Term. Gowen Fld

22h 41m

3 stops

LHR21:35London Heathrow

£626

Find similar

Air Canada flights from London to Idaho

Our best Air Canada deals on London to Idaho flight tickets

Air Canada

11 Dec

LHR11:10London Heathrow

17h 15m

2 stops

BOI21:25Boise Air Term. Gowen Fld

9 Jan

BOI10:48Boise Air Term. Gowen Fld

18h 02m

2 stops

LHR11:50London Heathrow

£725

Find similar

Air Canada

11 Dec

LHR11:10London Heathrow

17h 15m

2 stops

BOI21:25Boise Air Term. Gowen Fld

9 Jan

BOI10:48Boise Air Term. Gowen Fld

18h 02m

2 stops

LHR11:50London Heathrow

£726

Find similar

Fly from

Fly to

Route

Depart

Return

Price

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Wed 19/11

09:00-23:29

2 stops22h 29m

Spokane

Wed 26/11

16:05-09:40

1 stop33h 35m

£550

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Tue 4/11

09:00-23:29

2 stops22h 29m

Spokane

Tue 11/11

06:00-07:25

1 stop17h 25m

£551

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Mon 8/12

07:40-09:59

2 stops33h 19m

Boise Air Term. Gowen Fld

Tue 16/12

13:50-13:30

1 stop16h 40m

£553

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Tue 10/3

06:35-21:24

2 stops21h 49m

Spokane

Tue 17/3

05:00-07:10

2 stops19h 10m

£554

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Thu 20/11

07:40-20:45

2 stops21h 05m

Spokane

Thu 27/11

06:00-12:00

1 stop22h 00m

£556

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Tue 10/2

11:35-18:07

1 stop13h 32m

Boise Air Term. Gowen Fld

Wed 18/2

12:29-07:55

1 stop12h 26m

£565

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Mon 27/10

08:20-21:49

1 stop20h 29m

Spokane

Mon 3/11

05:25-08:35

1 stop19h 10m

£725

LondonJackson

LHR - JAC

LHRJAC

London Heathrow

Wed 5/11

10:45-18:15

1 stop14h 30m

Jackson Hole

Wed 12/11

12:57-10:00

1 stop14h 03m

£832

LondonJackson

LHR - JAC

LHRJAC

London Heathrow

Thu 20/11

20:25-17:10

2 stops27h 45m

Jackson Hole

Thu 27/11

12:57-11:40

2 stops15h 43m

£841

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Sat 6/12

11:40-22:49

2 stops19h 09m

Spokane

Sat 27/12

13:12-07:50

2 stops34h 38m

£862

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 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?

The month of September is, on average, the cheapest month to fly to Idaho from London, with most prices found around £589. If you’re not able to fly to Idaho in September, then February is your next best option. Flight prices from London to Idaho during February average around £597.

What is the cheapest day to depart on your flight to Idaho?

On average, the least expensive day to fly to Idaho from London is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as £627. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from London because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £865.

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

According to our data, the cheapest time of day to fly to Idaho is at midday. momondo users have found flights departing from London to Idaho at midday for as low as £647. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the evening are often more expensive, with an average ticket price of £838.

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 £696 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Idaho from London for as low as £573 on momondo.

Can stopping save me money on London to Idaho flights?

You could potentially save up to 8% 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

Direct flights	None

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 are refreshed on a daily basis.
How many operators does momondo search for flights from London to Idaho?
As of October 2025, there are 5 operators available to choose from for flights from London to Idaho.
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.

Best airlines flying from London to Idaho

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

Airline	Rating	Free Cancellation	Price
Finnair	PriceFrom £516	Free Cancellation	Rating 7.6 1,332 reviews	Search Finnair flights
United Airlines	PriceFrom £539	Free Cancellation	Rating 7.4 8,958 reviews	Search United Airlines flights
Lufthansa	PriceFrom £541	Free Cancellation	Rating 6.8 7,457 reviews	Search Lufthansa flights
KLM	PriceFrom £571	Free Cancellation	Rating 7.7 1,396 reviews	Search KLM flights
Virgin Atlantic	PriceFrom £599	Free Cancellation	Rating 7.4 665 reviews	Search Virgin Atlantic flights

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Idaho from London.

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

Yes. All flights to Idaho from London on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

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 London to Idaho.

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

Of course. momondo tracks the price of London to Idaho flights. All you need is a valid email address and we will do the rest; it is that quick and easy.