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

Lufthansa, Virgin Atlantic, and American Airlines 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.

$548 Cheap Flights from London Heathrow Airport to Idaho in 2026

Find the cheapest flights from London Heathrow Airport to Idaho

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

1:05 pm - 11:59 pm

LHR

GEG

18h 54m

2 stops

6:13 am - 11:55 am

GEG

LHR

45h 42m

2 stops

$796Multiple Airlines

Thu, Jul 9 - Wed, Jul 22

7:40 am - 11:38 pm

LHR

GEG

23h 58m

2 stops

7:02 am - 9:10 am

GEG

LHR

18h 08m

2 stops

$833United Airlines

Tue, Nov 10 - Tue, Nov 17

1:00 pm - 11:55 pm

LHR

BOI

17h 55m

1 stop

5:46 pm - 12:35 pm

BOI

LHR

11h 49m

1 stop

$846United Airlines

Mon, Jun 22 - Sun, Jun 28

11:35 am - 9:09 pm

LHR

GEG

17h 34m

1 stop

7:02 am - 7:25 am

GEG

LHR

16h 23m

1 stop

$905Lufthansa

Tue, Nov 10 - Tue, Nov 17

11:25 am - 5:58 pm

LHR

BOI

13h 33m

1 stop

12:24 pm - 6:45 am

BOI

LHR

35h 21m

1 stop

$975Lufthansa

Fri, Sep 4 - Mon, Sep 7

8:55 am - 9:20 pm

LHR

IDA

19h 25m

1 stop

12:15 pm - 10:55 am

IDA

LHR

15h 40m

1 stop

$1,104American Airlines

Tue, Sep 1 - Fri, Sep 25

8:55 am - 9:20 pm

LHR

IDA

19h 25m

1 stop

12:15 pm - 10:55 am

IDA

LHR

15h 40m

1 stop

$1,107American Airlines

Tue, Sep 1 - Fri, Sep 25

1:05 pm - 10:56 pm

LHR

IDA

40h 51m

2 stops

6:18 am - 11:55 am

IDA

LHR

22h 37m

2 stops

$1,116Icelandair

Tue, Sep 1 - Fri, Sep 25

6:15 am - 6:20 pm

LHR

IDA

19h 05m

2 stops

6:57 pm - 8:10 pm

IDA

LHR

18h 13m

2 stops

$1,123Delta

Tue, Sep 1 - Fri, Sep 25

6:15 am - 6:20 pm

LHR

IDA

19h 05m

2 stops

1:04 pm - 1:05 pm

IDA

LHR

17h 01m

2 stops

$1,126Delta

Tue, Sep 1 - Fri, Sep 25

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United Airlines flights from London Heathrow Airport to Idaho

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

United Airlines

Nov 10

LHR7:40 amLondon Heathrow

23h 58m

2 stops

GEG11:38 pmSpokane

Nov 17

GEG7:02 amSpokane

18h 08m

2 stops

LHR9:10 amLondon Heathrow

$833

United Airlines

Jun 22

LHR1:00 pmLondon Heathrow

17h 55m

1 stop

BOI11:55 pmBoise Air Term. Gowen Fld

Jun 28

BOI5:46 pmBoise Air Term. Gowen Fld

11h 49m

1 stop

LHR12:35 pmLondon Heathrow

$846

United Airlines

Sep 4

LHR1:05 pmLondon Heathrow

29h 25m

2 stops

GEG10:30 amSpokane

Sep 7

GEG12:40 pmSpokane

37h 00m

2 stops

LHR9:40 amLondon Heathrow

$876

Lufthansa flights from London Heathrow Airport to Idaho

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

Lufthansa

Nov 10

LHR11:35 amLondon Heathrow

17h 34m

1 stop

GEG9:09 pmSpokane

Nov 17

GEG7:02 amSpokane

16h 23m

1 stop

LHR7:25 amLondon Heathrow

$905

Lufthansa

Sep 4

LHR11:25 amLondon Heathrow

13h 33m

1 stop

BOI5:58 pmBoise Air Term. Gowen Fld

Sep 7

BOI12:24 pmBoise Air Term. Gowen Fld

35h 21m

1 stop

LHR6:45 amLondon Heathrow

$975

Lufthansa

Sep 13

LHR2:50 pmLondon Heathrow

14h 24m

1 stop

GEG9:14 pmSpokane

Sep 20

GEG1:37 pmSpokane

14h 58m

1 stop

LHR12:35 pmLondon Heathrow

$1,008

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

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Thu 7/9

1:05 pm-11:59 pm

2 stops18h 54m

Spokane

Wed 7/22

6:13 am-11:55 am

2 stops45h 42m

$796

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Tue 11/10

7:40 am-11:38 pm

2 stops23h 58m

Spokane

Tue 11/17

7:02 am-9:10 am

2 stops18h 08m

$833

Quickest round-trip

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Mon 6/22

1:00 pm-11:55 pm

1 stop17h 55m

Boise Air Term. Gowen Fld

Sun 6/28

5:46 pm-12:35 pm

1 stop11h 49m

$846

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Tue 11/10

11:35 am-9:09 pm

1 stop17h 34m

Spokane

Tue 11/17

7:02 am-7:25 am

1 stop16h 23m

$905

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 9/4

11:25 am-5:58 pm

1 stop13h 33m

Boise Air Term. Gowen Fld

Mon 9/7

12:24 pm-6:45 am

1 stop35h 21m

$975

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 9/1

8:55 am-9:20 pm

1 stop19h 25m

Idaho Falls Fanning Field

Fri 9/25

12:15 pm-10:55 am

1 stop15h 40m

$1,104

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 9/1

8:55 am-9:20 pm

1 stop19h 25m

Idaho Falls Fanning Field

Fri 9/25

12:15 pm-10:55 am

1 stop15h 40m

$1,107

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 9/1

1:05 pm-10:56 pm

2 stops40h 51m

Idaho Falls Fanning Field

Fri 9/25

6:18 am-11:55 am

2 stops22h 37m

$1,116

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 9/1

6:15 am-6:20 pm

2 stops19h 05m

Idaho Falls Fanning Field

Fri 9/25

6:57 pm-8:10 pm

2 stops18h 13m

$1,123

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 9/1

6:15 am-6:20 pm

2 stops19h 05m

Idaho Falls Fanning Field

Fri 9/25

1:04 pm-1:05 pm

2 stops17h 01m

$1,126

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, March 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 $682. If you don’t want to visit Idaho in March, then you should wait until November to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of $728.

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

You could potentially save up to 7% 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	12h 29m
Direct flights	None

The fastest flight from London Heathrow Airport to Idaho takes 12h 29m

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

Frequently asked questions about flying from London Heathrow Airport 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.

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.