Which airlines fly to Idaho?

United Airlines, Virgin Atlantic and Lufthansa are the top three most popular airlines that fly to Idaho from London Heathrow Airport according to our data. United Airlines is the first choice among our users, with 46% of people opting to fly with this airline when travelling to Idaho. Keep in mind that there are 3 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 Heathrow to Idaho?

United Airlines, Lufthansa, and Delta are the most popular carriers operating from London Heathrow to Idaho

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

Prices for flights from London Heathrow Airport to Idaho refresh daily.

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

There are 4 operators available for flights from London Heathrow Airport to Idaho as of March 2026.

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

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 London Heathrow Airport to Idaho.

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

The travel and health documents you'll need for your trip to Idaho may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Idaho. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

£343 Cheap Flights from London Heathrow Airport to Idaho in 2026

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Find the cheapest flights from London Heathrow Airport to Idaho

Round-trip

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

10:35 - 21:17

LHR

BOI

17h 42m

1 stop

06:23 - 07:25

BOI

LHR

18h 02m

1 stop

£507United Airlines

Mon, 27 Apr - Sun, 3 May

17:45 - 22:50

LHR

GEG

13h 05m

1 stop

15:30 - 15:35

GEG

LHR

16h 05m

1 stop

£592Delta

Tue, 31 Mar - Mon, 20 Apr

07:25 - 21:11

LHR

GEG

21h 46m

2 stops

12:25 - 11:10

GEG

LHR

14h 45m

1 stop

£611Lufthansa

Mon, 27 Apr - Mon, 4 May

07:30 - 21:11

LHR

GEG

21h 41m

2 stops

07:00 - 11:10

GEG

LHR

20h 10m

1 stop

£612Lufthansa

Mon, 13 Apr - Mon, 20 Apr

11:45 - 21:42

LHR

SUN

16h 57m

2 stops

15:34 - 06:45

SUN

LHR

32h 11m

2 stops

£761Virgin Atlantic

Wed, 29 Apr - Wed, 6 May

10:55 - 21:42

LHR

SUN

17h 47m

1 stop

15:34 - 13:15

SUN

LHR

14h 41m

2 stops

£769Virgin Atlantic

Wed, 29 Apr - Wed, 6 May

12:55 - 21:19

LHR

IDA

15h 24m

1 stop

13:46 - 10:55

IDA

LHR

14h 09m

1 stop

£812Multiple Airlines

Tue, 1 Sep - Fri, 25 Sep

06:30 - 22:14

LHR

IDA

22h 44m

2 stops

18:50 - 10:00

IDA

LHR

32h 10m

1 stop

£815KLM

Tue, 1 Sep - Fri, 25 Sep

12:55 - 21:22

LHR

IDA

15h 27m

1 stop

12:12 - 10:55

IDA

LHR

15h 43m

1 stop

£827Multiple Airlines

Tue, 1 Sep - Fri, 25 Sep

20:55 - 18:14

LHR

IDA

28h 19m

2 stops

18:50 - 10:00

IDA

LHR

32h 10m

1 stop

£828KLM

Tue, 1 Sep - Fri, 25 Sep

United Airlines flights from London Heathrow Airport to Idaho

Our best United Airlines deals on London Heathrow Airport to Idaho flight tickets

United Airlines

27 Apr

LHR10:35London Heathrow

17h 42m

1 stop

BOI21:17Boise Air Term. Gowen Fld

3 May

BOI06:23Boise Air Term. Gowen Fld

18h 02m

1 stop

LHR07:25London Heathrow

£507

United Airlines

20 Apr

LHR07:25London Heathrow

19h 28m

2 stops

BOI19:53Boise Air Term. Gowen Fld

27 Apr

BOI10:35Boise Air Term. Gowen Fld

16h 50m

2 stops

LHR10:25London Heathrow

£606

United Airlines

4 May

LHR08:40London Heathrow

21h 00m

2 stops

GEG21:40Spokane

10 May

GEG16:10Spokane

33h 30m

1 stop

LHR09:40London Heathrow

£614

Lufthansa flights from London Heathrow Airport to Idaho

Our best Lufthansa deals on London Heathrow Airport to Idaho flight tickets

Lufthansa

27 Apr

LHR06:55London Heathrow

22h 16m

2 stops

GEG21:11Spokane

4 May

GEG12:25Spokane

14h 45m

1 stop

LHR11:10London Heathrow

£611

Lufthansa

13 Apr

LHR07:30London Heathrow

21h 41m

2 stops

GEG21:11Spokane

20 Apr

GEG07:00Spokane

20h 10m

1 stop

LHR11:10London Heathrow

£612

Lufthansa

27 Apr

LHR07:25London Heathrow

21h 46m

2 stops

GEG21:11Spokane

4 May

GEG12:25Spokane

25h 45m

2 stops

LHR22:10London Heathrow

£616

momondo Fare Finder

Use the filters below to find and compare flights from London Heathrow Airport to Idaho that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Mon 27/4

10:35-21:17

1 stop17h 42m

Boise Air Term. Gowen Fld

Sun 3/5

06:23-07:25

1 stop18h 02m

£507

Fastest return journey

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Tue 31/3

17:45-22:50

1 stop13h 05m

Spokane

Mon 20/4

15:30-15:35

1 stop16h 05m

£592

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Mon 27/4

07:25-21:11

2 stops21h 46m

Spokane

Mon 4/5

12:25-11:10

1 stop14h 45m

£611

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Mon 13/4

07:30-21:11

2 stops21h 41m

Spokane

Mon 20/4

07:00-11:10

1 stop20h 10m

£612

LondonHailey

LHR - SUN

LHRSUN

London Heathrow

Wed 29/4

11:45-21:42

2 stops16h 57m

Hailey Sun Valley-Friedman

Wed 6/5

15:34-06:45

2 stops32h 11m

£761

LondonHailey

LHR - SUN

LHRSUN

London Heathrow

Wed 29/4

10:55-21:42

1 stop17h 47m

Hailey Sun Valley-Friedman

Wed 6/5

15:34-13:15

2 stops14h 41m

£769

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 1/9

12:55-21:19

1 stop15h 24m

Idaho Falls Fanning Field

Fri 25/9

13:46-10:55

1 stop14h 09m

£812

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 1/9

06:30-22:14

2 stops22h 44m

Idaho Falls Fanning Field

Fri 25/9

18:50-10:00

1 stop32h 10m

£815

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 1/9

12:55-21:22

1 stop15h 27m

Idaho Falls Fanning Field

Fri 25/9

12:12-10:55

1 stop15h 43m

£827

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 1/9

20:55-18:14

2 stops28h 19m

Idaho Falls Fanning Field

Fri 25/9

18:50-10:00

1 stop32h 10m

£828

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 Heathrow Airport 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 November is, on average, the cheapest month to fly to Idaho from London Heathrow Airport, with most prices found around £589. If you’re not able to fly to Idaho in November, then April is your next best option. Flight prices from London Heathrow Airport to Idaho during April average around £635.

Can stopping save me money on London Heathrow Airport to Idaho flights?

You could potentially save up to 56% on your flight if you consider stops on a London Heathrow Airport to Idaho flight.

Cheap London Heathrow Airport to Idaho flight deals and tips

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

Fastest flight time	13h 03m
Direct flights	None

The fastest flight from London Heathrow Airport to Idaho takes 13h 03m

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

Search flight deals

When did momondo last update prices for flights from London Heathrow Airport to Idaho?
Prices for flights from London Heathrow Airport to Idaho refresh daily.
How many operators does momondo search for flights from London Heathrow Airport to Idaho?
There are 4 operators available for flights from London Heathrow Airport to Idaho as of March 2026.
How old do you have to be to fly from London Heathrow Airport to Idaho?
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 London Heathrow Airport to Idaho.
What documentation or ID do you need to fly to Idaho?
The travel and health documents you'll need for your trip to Idaho may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Idaho. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from London Heathrow Airport to Idaho

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

Airline	Rating	Free Cancellation	Price
Lufthansa	PriceFrom £513	Free Cancellation	Rating 6.8 7,858 reviews	Search Lufthansa flights
United Airlines	PriceFrom £552	Free Cancellation	Rating 7.4 9,431 reviews	Search United Airlines flights
Virgin Atlantic	PriceFrom £606	Free Cancellation	Rating 7.5 682 reviews	Search Virgin Atlantic flights

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?

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

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?

Yes. momondo can track prices for London to Idaho flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.