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

United Airlines, Finnair, 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 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.

$558 Cheap Flights from London Heathrow Airport to Idaho in 2025/26

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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.

12:15 pm - 12:23 am

LHR

GEG

20h 08m2 stops

7:30 am - 10:50 am

GEG

LHR

19h 20m2 stops

$652Multiple Airlines

Fri, Jan 23 - Fri, Jan 30

6:35 am - 9:18 pm

LHR

GEG

21h 43m2 stops

5:00 am - 7:55 am

GEG

LHR

19h 55m2 stops

$743United Airlines

Tue, Mar 10 - Tue, Mar 17

6:35 am - 9:03 pm

LHR

GEG

21h 28m2 stops

6:00 am - 5:55 am

GEG

LHR

16h 55m1 stop

$744United Airlines

Tue, Mar 10 - Tue, Mar 17

8:00 am - 10:47 pm

LHR

BOI

21h 47m1 stop

12:30 pm - 11:10 am

BOI

LHR

15h 40m1 stop

$781Lufthansa

Mon, Apr 20 - Mon, Apr 27

5:40 pm - 1:26 pm

LHR

BOI

26h 46m2 stops

6:55 pm - 10:10 am

BOI

LHR

32h 15m2 stops

$788Lufthansa

Mon, Apr 20 - Mon, Apr 27

6:20 am - 10:57 pm

LHR

IDA

23h 37m2 stops

1:15 pm - 10:00 am

IDA

LHR

13h 45m1 stop

$1,050Delta

Sat, Jan 24 - Sat, Jan 31

2:05 pm - 3:09 pm

LHR

JAC

56h 04m2 stops

2:40 pm - 8:10 pm

JAC

LHR

46h 30m2 stops

$1,143Virgin Atlantic

Sun, Jan 25 - Sat, Jan 31

10:45 am - 4:24 pm

LHR

JAC

12h 39m1 stop

2:40 pm - 8:10 pm

JAC

LHR

46h 30m2 stops

$1,149Virgin Atlantic

Sat, Jan 24 - Sat, Jan 31

7:10 pm - 12:36 pm

LHR

SUN

24h 26m2 stops

7:46 am - 9:15 am

SUN

LHR

18h 29m2 stops

$1,742American Airlines

Sun, Dec 21 - Wed, Feb 18

12:35 pm - 12:36 pm

LHR

SUN

31h 01m1 stop

1:27 pm - 10:25 am

SUN

LHR

13h 58m1 stop

$1,758American Airlines

Sun, Dec 21 - Wed, Feb 18

Air Canada flights from London Heathrow Airport to Idaho

Our best Air Canada deals on London Heathrow Airport to Idaho flight tickets

Air Canada

May 4

LHR5:40 pmLondon Heathrow

33h 11m

2 stops

GEG6:51 pmSpokane

May 10

GEG7:10 amSpokane

18h 25m

2 stops

LHR9:35 amLondon Heathrow

$845

Find similar

Air Canada

May 7

LHR3:00 pmLondon Heathrow

51h 09m

2 stops

BOI11:09 amBoise Air Term. Gowen Fld

May 17

BOI2:43 pmBoise Air Term. Gowen Fld

32h 52m

2 stops

LHR6:35 amLondon Heathrow

$1,010

Find similar

Air Canada

Mar 7

LHR1:25 pmLondon Heathrow

38h 04m

2 stops

BOI8:29 pmBoise Air Term. Gowen Fld

Mar 14

BOI6:15 amBoise Air Term. Gowen Fld

23h 05m

2 stops

LHR11:20 amLondon Heathrow

$1,166

Find similar

Scandinavian Airlines flights from London Heathrow Airport to Idaho

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

Scandinavian Airlines

Apr 20

LHR10:20 amLondon Heathrow

19h 44m

2 stops

BOI11:04 pmBoise Air Term. Gowen Fld

Apr 27

BOI1:00 pmBoise Air Term. Gowen Fld

25h 35m

3 stops

LHR9:35 pmLondon Heathrow

$853

Find similar

Scandinavian Airlines

Apr 20

LHR6:40 amLondon Heathrow

23h 24m

2 stops

BOI11:04 pmBoise Air Term. Gowen Fld

Apr 27

BOI1:00 pmBoise Air Term. Gowen Fld

25h 35m

3 stops

LHR9:35 pmLondon Heathrow

$854

Find similar

Scandinavian Airlines

Apr 20

LHR7:05 amLondon Heathrow

22h 59m

3 stops

BOI11:04 pmBoise Air Term. Gowen Fld

Apr 27

BOI1:00 pmBoise Air Term. Gowen Fld

25h 35m

3 stops

LHR9:35 pmLondon Heathrow

$857

Find similar

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

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Fri 1/23

12:15 pm-12:23 am

2 stops20h 08m

Spokane

Fri 1/30

7:30 am-10:50 am

2 stops19h 20m

$652

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Tue 3/10

6:35 am-9:18 pm

2 stops21h 43m

Spokane

Tue 3/17

5:00 am-7:55 am

2 stops19h 55m

$743

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Tue 3/10

6:35 am-9:03 pm

2 stops21h 28m

Spokane

Tue 3/17

6:00 am-5:55 am

1 stop16h 55m

$744

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Mon 4/20

8:00 am-10:47 pm

1 stop21h 47m

Boise Air Term. Gowen Fld

Mon 4/27

12:30 pm-11:10 am

1 stop15h 40m

$781

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Mon 4/20

5:40 pm-1:26 pm

2 stops26h 46m

Boise Air Term. Gowen Fld

Mon 4/27

6:55 pm-10:10 am

2 stops32h 15m

$788

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 1/24

6:20 am-10:57 pm

2 stops23h 37m

Idaho Falls Fanning Field

Sat 1/31

1:15 pm-10:00 am

1 stop13h 45m

$1,050

LondonJackson

LHR - JAC

LHRJAC

London Heathrow

Sun 1/25

2:05 pm-3:09 pm

2 stops56h 04m

Jackson Hole

Sat 1/31

2:40 pm-8:10 pm

2 stops46h 30m

$1,143

LondonJackson

LHR - JAC

LHRJAC

London Heathrow

Sat 1/24

10:45 am-4:24 pm

1 stop12h 39m

Jackson Hole

Sat 1/31

2:40 pm-8:10 pm

2 stops46h 30m

$1,149

LondonHailey

LHR - SUN

LHRSUN

London Heathrow

Sun 12/21

7:10 pm-12:36 pm

2 stops24h 26m

Hailey Sun Valley-Friedman

Wed 2/18

7:46 am-9:15 am

2 stops18h 29m

$1,742

LondonHailey

LHR - SUN

LHRSUN

London Heathrow

Sun 12/21

12:35 pm-12:36 pm

1 stop31h 01m

Hailey Sun Valley-Friedman

Wed 2/18

1:27 pm-10:25 am

1 stop13h 58m

$1,758

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, January 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 $757. If you don’t want to visit Idaho in January, then you should wait until November to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of $781.

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

Our data shows that Thursday is the least expensive day to fly to Idaho. Tickets to fly out on this day can be as low as $907. 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 travelers. As a result, prices tend to be around $1,365.

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 noon. momondo users have found flights departing from London Heathrow Airport to Idaho at noon for as low as $1,053. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the morning is when there is more demand to fly to Idaho, so prices are often more expensive at around $1,056 per ticket.

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 $1,005 when searching weeks out. 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 $766 on momondo.

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

You could potentially save up to 17% 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 39m
Direct flights	None

The fastest flight from London Heathrow Airport to Idaho takes 12h 39m

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.