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Cheap flights from London Heathrow Airport to Idaho from £475

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Idaho departing on 26/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from London Heathrow Airport to Idaho

Cheap return flights

Enter your travel dates to find the best prices.
United Airlines Logo
07:40 - 09:59LHR-BOI
33h 19m2 stops
United Airlines Logo
14:49 - 09:40BOI-LHR
11h 51m1 stop
£552United Airlines
Find Deal
Mon, 8 Dec - Mon, 15 Dec
United Airlines Logo
07:40 - 09:59LHR-BOI
33h 19m2 stops
United Airlines Logo
14:49 - 09:40BOI-LHR
11h 51m1 stop
£553United Airlines
Find Deal
Mon, 8 Dec - Mon, 15 Dec
United Airlines Logo
08:30 - 22:45LHR-BOI
21h 15m2 stops
United Airlines Logo
06:20 - 09:40BOI-LHR
20h 20m1 stop
£556United Airlines
Find Deal
Tue, 9 Dec - Mon, 15 Dec
Lufthansa Logo
11:35 - 18:07LHR-BOI
13h 32m1 stop
Lufthansa Logo
14:49 - 09:40BOI-LHR
11h 51m1 stop
£568Lufthansa
Find Deal
Tue, 9 Dec - Mon, 15 Dec
Lufthansa Logo
13:45 - 22:59LHR-GEG
17h 14m1 stop
Lufthansa Logo
12:33 - 12:00GEG-LHR
15h 27m1 stop
£569Lufthansa
Find Deal
Wed, 26 Nov - Wed, 3 Dec
Multiple Airlines Logo
14:30 - 16:10LHR-BOI
32h 40m2 stops
Multiple Airlines Logo
14:40 - 09:40BOI-LHR
12h 00m1 stop
£581Multiple Airlines
Find Deal
Mon, 9 Feb - Tue, 17 Feb
Multiple Airlines Logo
13:25 - 23:48LHR-BOI
17h 23m2 stops
Multiple Airlines Logo
05:00 - 06:30BOI-LHR
18h 30m3 stops
£635Multiple Airlines
Find Deal
Wed, 25 Feb - Sat, 7 Mar
Virgin Atlantic Logo
12:40 - 23:59LHR-GEG
19h 19m2 stops
Virgin Atlantic Logo
06:05 - 07:05GEG-LHR
17h 00m1 stop
£653Virgin Atlantic
Find Deal
Wed, 12 Nov - Thu, 20 Nov
Virgin Atlantic Logo
17:50 - 21:59LHR-SUN
35h 09m2 stops
Virgin Atlantic Logo
13:06 - 10:00SUN-LHR
13h 54m1 stop
£741Virgin Atlantic
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Sat, 22 Nov - Tue, 2 Dec
Finnair Logo
10:05 - 12:29LHR-JAC
33h 24m1 stop
Finnair Logo
13:11 - 08:35JAC-LHR
12h 24m1 stop
£864Finnair
Find Deal
Wed, 12 Nov - Thu, 20 Nov

United Airlines flights from London Heathrow Airport to Idaho

Our best United Airlines deals on London Heathrow Airport to Idaho flight tickets
United Airlines
8 Dec
LHR07:40London Heathrow
33h 19m
2 stops
BOI09:59Boise Air Term. Gowen Fld
15 Dec
BOI14:49Boise Air Term. Gowen Fld
11h 51m
1 stop
LHR09:40London Heathrow
£552
Find similar
United Airlines
8 Dec
LHR07:40London Heathrow
33h 19m
2 stops
BOI09:59Boise Air Term. Gowen Fld
15 Dec
BOI14:49Boise Air Term. Gowen Fld
11h 51m
1 stop
LHR09:40London Heathrow
£553
Find similar
United Airlines
9 Dec
LHR08:30London Heathrow
21h 15m
2 stops
BOI22:45Boise Air Term. Gowen Fld
15 Dec
BOI06:20Boise Air Term. Gowen Fld
20h 20m
1 stop
LHR09:40London Heathrow
£556
Find similar

Lufthansa flights from London Heathrow Airport to Idaho

Our best Lufthansa deals on London Heathrow Airport to Idaho flight tickets
Lufthansa
9 Dec
LHR11:35London Heathrow
13h 32m
1 stop
BOI18:07Boise Air Term. Gowen Fld
15 Dec
BOI14:49Boise Air Term. Gowen Fld
11h 51m
1 stop
LHR09:40London Heathrow
£568
Find similar
Lufthansa
26 Nov
LHR13:45London Heathrow
17h 14m
1 stop
GEG22:59Spokane
3 Dec
GEG12:33Spokane
15h 27m
1 stop
LHR12:00London Heathrow
£569
Find similar
Lufthansa
9 Dec
LHR06:35London Heathrow
20h 08m
2 stops
BOI19:43Boise Air Term. Gowen Fld
15 Dec
BOI10:40Boise Air Term. Gowen Fld
17h 10m
2 stops
LHR10:50London Heathrow
£570
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from London Heathrow Airport to Idaho that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 31 October 2025.
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

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Mon 8/12

07:40-09:59

2 stops33h 19m

Boise Air Term. Gowen Fld

Mon 15/12

14:49-09:40

1 stop11h 51m

£552

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Mon 8/12

07:40-09:59

2 stops33h 19m

Boise Air Term. Gowen Fld

Mon 15/12

14:49-09:40

1 stop11h 51m

£553

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Tue 9/12

08:30-22:45

2 stops21h 15m

Boise Air Term. Gowen Fld

Mon 15/12

06:20-09:40

1 stop20h 20m

£556

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Tue 9/12

11:35-18:07

1 stop13h 32m

Boise Air Term. Gowen Fld

Mon 15/12

14:49-09:40

1 stop11h 51m

£568

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Wed 26/11

13:45-22:59

1 stop17h 14m

Spokane

Wed 3/12

12:33-12:00

1 stop15h 27m

£569

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Mon 9/2

14:30-16:10

2 stops32h 40m

Boise Air Term. Gowen Fld

Tue 17/2

14:40-09:40

1 stop12h 00m

£581

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Wed 25/2

13:25-23:48

2 stops17h 23m

Boise Air Term. Gowen Fld

Sat 7/3

05:00-06:30

3 stops18h 30m

£635

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Wed 12/11

12:40-23:59

2 stops19h 19m

Spokane

Thu 20/11

06:05-07:05

1 stop17h 00m

£653

LondonHailey

LHR - SUN

LHRSUN

London Heathrow

Sat 22/11

17:50-21:59

2 stops35h 09m

Hailey Sun Valley-Friedman

Tue 2/12

13:06-10:00

1 stop13h 54m

£741

LondonJackson

LHR - JAC

LHRJAC

London Heathrow

Wed 12/11

10:05-12:29

1 stop33h 24m

Jackson Hole

Thu 20/11

13:11-08:35

1 stop12h 24m

£864

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Idaho from

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

What is the cheapest month to fly to Idaho?

The month of January is, on average, the cheapest month to fly to Idaho from London Heathrow Airport, with most prices found around £574. If you’re not able to fly to Idaho in January, then November is your next best option. Flight prices from London Heathrow Airport to Idaho during November average around £599.

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

On average, the least expensive day to fly to Idaho from London Heathrow Airport is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as £640. 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 Heathrow Airport because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £882.

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 Heathrow Airport to Idaho at midday for as low as £660. 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 £855.

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

You are more likely to see cheaper flights to Idaho from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Idaho for around £710 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 Heathrow Airport for as low as £584 on momondo.

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

Direct flights

None
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?

  • 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
FinnairPriceFrom £527Free CancellationRating
7.6
1,333 reviews
Search Finnair flights
United AirlinesPriceFrom £550Free CancellationRating
7.4
8,995 reviews
Search United Airlines flights
LufthansaPriceFrom £553Free CancellationRating
6.8
7,542 reviews
Search Lufthansa flights
Virgin AtlanticPriceFrom £611Free CancellationRating
7.5
671 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.

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