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

United Airlines, Delta, and Lufthansa 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 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 that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check 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 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.

$455 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

Cheap round-trip flights

Enter your travel dates to find the best prices.

10:35 am - 9:17 pm

LHR

BOI

17h 42m

1 stop

6:23 am - 7:25 am

BOI

LHR

18h 02m

1 stop

$674United Airlines

lun, apr 27 - dom, mag 3

5:45 pm - 10:50 pm

LHR

GEG

13h 05m

1 stop

3:30 pm - 3:35 pm

GEG

LHR

16h 05m

1 stop

$786Delta

mar, mar 31 - lun, apr 20

7:25 am - 10:52 pm

LHR

GEG

23h 27m

2 stops

7:09 am - 10:10 am

GEG

LHR

19h 01m

1 stop

$799Multiple Airlines

gio, apr 9 - gio, apr 23

7:25 am - 9:11 pm

LHR

GEG

21h 46m

2 stops

12:25 pm - 11:10 am

GEG

LHR

14h 45m

1 stop

$812Lufthansa

lun, apr 27 - lun, mag 4

7:30 am - 9:11 pm

LHR

GEG

21h 41m

2 stops

7:00 am - 11:10 am

GEG

LHR

20h 10m

1 stop

$813Lufthansa

lun, apr 13 - lun, apr 20

7:25 am - 10:52 pm

LHR

GEG

23h 27m

2 stops

7:09 am - 10:40 am

GEG

LHR

19h 31m

2 stops

$819Multiple Airlines

gio, apr 9 - gio, apr 23

11:45 am - 9:42 pm

LHR

SUN

16h 57m

2 stops

3:34 pm - 6:45 am

SUN

LHR

32h 11m

2 stops

$1,011Virgin Atlantic

mer, apr 29 - mer, mag 6

10:55 am - 9:42 pm

LHR

SUN

17h 47m

1 stop

3:34 pm - 1:15 pm

SUN

LHR

14h 41m

2 stops

$1,022Virgin Atlantic

mer, apr 29 - mer, mag 6

6:30 am - 10:14 pm

LHR

IDA

22h 44m

2 stops

6:50 pm - 10:00 am

IDA

LHR

32h 10m

1 stop

$1,083KLM

mar, set 1 - ven, set 25

8:55 pm - 6:14 pm

LHR

IDA

28h 19m

2 stops

6:50 pm - 10:00 am

IDA

LHR

32h 10m

1 stop

$1,100KLM

mar, set 1 - ven, set 25

United Airlines flights from London Heathrow Airport to Idaho

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

United Airlines

Apr 27

LHR10:35 amLondon Heathrow

17h 42m

1 stop

BOI9:17 pmBoise Air Term. Gowen Fld

May 3

BOI6:23 amBoise Air Term. Gowen Fld

18h 02m

1 stop

LHR7:25 amLondon Heathrow

$674

United Airlines

Apr 20

LHR7:25 amLondon Heathrow

19h 28m

2 stops

BOI7:53 pmBoise Air Term. Gowen Fld

Apr 27

BOI10:35 amBoise Air Term. Gowen Fld

16h 50m

2 stops

LHR10:25 amLondon Heathrow

$805

United Airlines

May 4

LHR8:40 amLondon Heathrow

21h 00m

2 stops

GEG9:40 pmSpokane

May 10

GEG4:10 pmSpokane

33h 30m

1 stop

LHR9:40 amLondon Heathrow

$816

Lufthansa flights from London Heathrow Airport to Idaho

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

Lufthansa

Apr 27

LHR6:55 amLondon Heathrow

22h 16m

2 stops

GEG9:11 pmSpokane

May 4

GEG12:25 pmSpokane

14h 45m

1 stop

LHR11:10 amLondon Heathrow

$812

Lufthansa

Apr 13

LHR7:30 amLondon Heathrow

21h 41m

2 stops

GEG9:11 pmSpokane

Apr 20

GEG7:00 amSpokane

20h 10m

1 stop

LHR11:10 amLondon Heathrow

$813

Lufthansa

Apr 27

LHR7:25 amLondon Heathrow

21h 46m

2 stops

GEG9:11 pmSpokane

May 4

GEG12:25 pmSpokane

25h 45m

2 stops

LHR10:10 pmLondon Heathrow

$818

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 round-trip

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

lun 4/27

10:35 am-9:17 pm

1 stop17h 42m

Boise Air Term. Gowen Fld

dom 5/3

6:23 am-7:25 am

1 stop18h 02m

$674

Quickest round-trip

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

mar 3/31

5:45 pm-10:50 pm

1 stop13h 05m

Spokane

lun 4/20

3:30 pm-3:35 pm

1 stop16h 05m

$786

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

gio 4/9

7:25 am-10:52 pm

2 stops23h 27m

Spokane

gio 4/23

7:09 am-10:10 am

1 stop19h 01m

$799

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

lun 4/27

7:25 am-9:11 pm

2 stops21h 46m

Spokane

lun 5/4

12:25 pm-11:10 am

1 stop14h 45m

$812

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

lun 4/13

7:30 am-9:11 pm

2 stops21h 41m

Spokane

lun 4/20

7:00 am-11:10 am

1 stop20h 10m

$813

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

gio 4/9

7:25 am-10:52 pm

2 stops23h 27m

Spokane

gio 4/23

7:09 am-10:40 am

2 stops19h 31m

$819

LondonHailey

LHR - SUN

LHRSUN

London Heathrow

mer 4/29

11:45 am-9:42 pm

2 stops16h 57m

Hailey Sun Valley-Friedman

mer 5/6

3:34 pm-6:45 am

2 stops32h 11m

$1,011

LondonHailey

LHR - SUN

LHRSUN

London Heathrow

mer 4/29

10:55 am-9:42 pm

1 stop17h 47m

Hailey Sun Valley-Friedman

mer 5/6

3:34 pm-1:15 pm

2 stops14h 41m

$1,022

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

mar 9/1

6:30 am-10:14 pm

2 stops22h 44m

Idaho Falls Fanning Field

ven 9/25

6:50 pm-10:00 am

1 stop32h 10m

$1,083

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

mar 9/1

8:55 pm-6:14 pm

2 stops28h 19m

Idaho Falls Fanning Field

ven 9/25

6:50 pm-10:00 am

1 stop32h 10m

$1,100

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 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?

In general, November is the cheapest month to fly from London Heathrow Airport to Idaho. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $783. If you don’t want to visit Idaho in November, then you should wait until April to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of $844.

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

You could potentially save up to 18% 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 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 that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check 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 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?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from London to Idaho. Millions of users trust and use momondo every year so you are in good hands.

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

momondo does allow users to show only those flights to Idaho from London which offer a flexible booking policy as well as other useful filters and features.

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

momondo helps you find the best flight between London and Idaho by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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.