How long does it take to fly to London Heathrow Airport?

If you’re flying from a popular airport in Idaho, such as Boise or Idaho Falls, and flying into London Heathrow Airport, then you can expect flight times to average 12h 05m and 13h 50m, respectively.

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

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

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

Prices for flights from Idaho to London Heathrow Airport are updated daily.

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

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 Idaho to London Heathrow Airport.

What documentation or ID do you need to fly to London Heathrow Airport?

The travel and health documents required for your trip to London Heathrow Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London Heathrow Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

£240 Cheap Flights from Idaho to London Heathrow Airport in 2026

Find the cheapest flights from Idaho to London

Return

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

12:30 - 07:55JAC Jackson Hole-LHR London Heathrow

12h 25m1 stop Chicago O'Hare Intl

06:50 - 21:02LHR London Heathrow-JAC Jackson Hole

21h 12m3 stops Brussels Bruxelles-National Chicago O'Hare Intl Denver Intl

£547United Airlines

Sun, 6 Dec - Tue, 8 Dec

12:30 - 07:55JAC Jackson Hole-LHR London Heathrow

12h 25m1 stop Chicago O'Hare Intl

06:35 - 21:02LHR London Heathrow-JAC Jackson Hole

21h 27m2 stops Munich Franz Josef Strauss Denver Intl

£549United Airlines

Sun, 6 Dec - Tue, 8 Dec

12:30 - 07:55JAC Jackson Hole-LHR London Heathrow

12h 25m1 stop Chicago O'Hare Intl

06:35 - 21:02LHR London Heathrow-JAC Jackson Hole

21h 27m2 stops Munich Franz Josef Strauss Denver Intl

£550United Airlines

Sun, 6 Dec - Tue, 8 Dec

10:39 - 09:10BOI Boise Air Term. Gowen Fld-LHR London Heathrow

15h 31m2 stops Denver Intl Newark

06:35 - 19:16LHR London Heathrow-BOI Boise Air Term. Gowen Fld

19h 41m2 stops Munich Franz Josef Strauss San Francisco

£553United Airlines

Sun, 6 Dec - Tue, 8 Dec

12:30 - 07:55JAC Jackson Hole-LHR London Heathrow

12h 25m1 stop Chicago O'Hare Intl

06:35 - 21:02LHR London Heathrow-JAC Jackson Hole

21h 27m2 stops Munich Franz Josef Strauss Denver Intl

£586Lufthansa

Sun, 6 Dec - Tue, 8 Dec

11:30 - 10:45BOI Boise Air Term. Gowen Fld-LHR London Heathrow

16h 15m2 stops Salt Lake City Amsterdam Schiphol

10:45 - 17:58LHR London Heathrow-BOI Boise Air Term. Gowen Fld

14h 13m1 stop Salt Lake City

£597Delta

Sun, 6 Dec - Tue, 8 Dec

10:39 - 09:40BOI Boise Air Term. Gowen Fld-LHR London Heathrow

16h 01m1 stop Denver Intl

06:35 - 19:16LHR London Heathrow-BOI Boise Air Term. Gowen Fld

19h 41m2 stops Munich Franz Josef Strauss San Francisco

£599United Airlines

Sun, 6 Dec - Tue, 8 Dec

10:39 - 09:40BOI Boise Air Term. Gowen Fld-LHR London Heathrow

16h 01m1 stop Denver Intl

06:35 - 19:16LHR London Heathrow-BOI Boise Air Term. Gowen Fld

19h 41m2 stops Munich Franz Josef Strauss San Francisco

£600United Airlines

Sun, 6 Dec - Tue, 8 Dec

07:00 - 09:40IDA Idaho Falls Fanning Field-LHR London Heathrow

19h 40m1 stop Denver Intl

06:35 - 17:22LHR London Heathrow-IDA Idaho Falls Fanning Field

41h 47m2 stops Munich Franz Josef Strauss Denver Intl

£604United Airlines

Mon, 7 Dec - Wed, 9 Dec

16:25 - 20:35JAC Jackson Hole-LHR London Heathrow

21h 10m2 stops Denver Intl Newark

11:10 - 10:03LHR London Heathrow-JAC Jackson Hole

29h 53m2 stops Munich Franz Josef Strauss Denver Intl

£607United Airlines

Sun, 6 Dec - Tue, 8 Dec

Cheap last-minute flights

Enter your travel dates to find the best prices.

08:59 - 12:10BOI Boise Air Term. Gowen Fld-LHR London Heathrow

20h 11m1 stop Seattle/Tacoma Intl

06:30 - 18:48LHR London Heathrow-BOI Boise Air Term. Gowen Fld

19h 18m2 stops Amsterdam Schiphol Seattle/Tacoma Intl

£753Delta

Wed, 26 Aug - Wed, 2 Sep

05:00 - 10:00BOI Boise Air Term. Gowen Fld-LHR London Heathrow

22h 00m2 stops Denver Intl Montreal Pierre Elliott Trudeau Intl

07:25 - 19:24LHR London Heathrow-BOI Boise Air Term. Gowen Fld

18h 59m2 stops Munich Franz Josef Strauss San Francisco

£756United Airlines

Wed, 26 Aug - Wed, 2 Sep

05:00 - 07:45BOI Boise Air Term. Gowen Fld-LHR London Heathrow

19h 45m2 stops Denver Intl Houston George Bush Intcntl

07:30 - 17:58LHR London Heathrow-BOI Boise Air Term. Gowen Fld

17h 28m2 stops Frankfurt am Main Denver Intl

£772Lufthansa

Wed, 26 Aug - Sun, 6 Sep

14:53 - 13:05BOI Boise Air Term. Gowen Fld-LHR London Heathrow

15h 12m1 stop Minneapolis St Paul

12:25 - 23:59LHR London Heathrow-BOI Boise Air Term. Gowen Fld

18h 34m1 stop Minneapolis St Paul

£775KLM

Wed, 26 Aug - Wed, 2 Sep

12:24 - 08:30BOI Boise Air Term. Gowen Fld-LHR London Heathrow

13h 06m1 stop Chicago O'Hare Intl

11:25 - 21:37LHR London Heathrow-BOI Boise Air Term. Gowen Fld

17h 12m1 stop Denver Intl

£785Lufthansa

Wed, 26 Aug - Sun, 6 Sep

05:00 - 06:35BOI Boise Air Term. Gowen Fld-LHR London Heathrow

18h 35m3 stops Denver Intl Chicago O'Hare Intl Toronto Pearson Intl

09:30 - 22:40LHR London Heathrow-BOI Boise Air Term. Gowen Fld

20h 10m2 stops Montreal Pierre Elliott Trudeau Intl Denver Intl

£1,039Multiple Airlines

Wed, 26 Aug - Wed, 2 Sep

14:44 - 12:35BOI Boise Air Term. Gowen Fld-LHR London Heathrow

14h 51m1 stop Denver Intl

09:30 - 22:33LHR London Heathrow-BOI Boise Air Term. Gowen Fld

20h 03m2 stops Montreal Pierre Elliott Trudeau Intl Denver Intl

£1,688Multiple Airlines

Wed, 26 Aug - Wed, 30 Sep

10:31 - 09:40BOI Boise Air Term. Gowen Fld-LHR London Heathrow

16h 09m1 stop Denver Intl

09:30 - 22:58LHR London Heathrow-BOI Boise Air Term. Gowen Fld

20h 28m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

£1,689Multiple Airlines

Wed, 26 Aug - Wed, 30 Sep

14:44 - 09:40BOI Boise Air Term. Gowen Fld-LHR London Heathrow

11h 56m1 stop Denver Intl

08:30 - 19:29LHR London Heathrow-BOI Boise Air Term. Gowen Fld

17h 59m2 stops Toronto Pearson Intl San Francisco

£1,690Multiple Airlines

Wed, 26 Aug - Wed, 30 Sep

12:23 - 12:10BOI Boise Air Term. Gowen Fld-LHR London Heathrow

16h 47m1 stop Seattle/Tacoma Intl

11:40 - 22:34LHR London Heathrow-BOI Boise Air Term. Gowen Fld

17h 54m1 stop Seattle/Tacoma Intl

£1,785Delta

Wed, 26 Aug - Wed, 30 Sep

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KLM flights from Idaho to London Heathrow Airport

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

KLM

1 Dec

IDA06:00Idaho Falls Fanning Field

21h 00m

1 stop

LHR10:00London Heathrow

3 Dec

LHR17:50London Heathrow

31h 26m

2 stops

IDA18:16Idaho Falls Fanning Field

£643

KLM

30 Nov

JAC13:05Jackson Hole

13h 55m

1 stop

LHR10:00London Heathrow

7 Dec

LHR20:25London Heathrow

30h 06m

2 stops

JAC19:31Jackson Hole

£643

KLM

1 Dec

JAC07:25Jackson Hole

16h 40m

2 stops

LHR07:05London Heathrow

7 Dec

LHR17:50London Heathrow

29h 37m

2 stops

JAC16:27Jackson Hole

£646

United Airlines flights from Idaho to London Heathrow Airport

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

United Airlines

6 Dec

JAC12:30Jackson Hole

12h 25m

1 stop

LHR07:55London Heathrow

8 Dec

LHR06:50London Heathrow

21h 12m

3 stops

JAC21:02Jackson Hole

£547

United Airlines

6 Dec

JAC12:30Jackson Hole

12h 25m

1 stop

LHR07:55London Heathrow

8 Dec

LHR06:35London Heathrow

21h 27m

2 stops

JAC21:02Jackson Hole

£549

United Airlines

6 Dec

JAC12:30Jackson Hole

12h 25m

1 stop

LHR07:55London Heathrow

8 Dec

LHR06:35London Heathrow

21h 27m

2 stops

JAC21:02Jackson Hole

£550

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

JacksonLondon

JAC Jackson Hole - LHR London Heathrow

JACLHR

Jackson Hole

Sun 6/12

12:30-07:55

1 stop12h 25m

London Heathrow

Tue 8/12

06:50-21:02

3 stops21h 12m

£547

JacksonLondon

JAC Jackson Hole - LHR London Heathrow

JACLHR

Jackson Hole

Sun 6/12

12:30-07:55

1 stop12h 25m

London Heathrow

Tue 8/12

06:35-21:02

2 stops21h 27m

£549

JacksonLondon

JAC Jackson Hole - LHR London Heathrow

JACLHR

Jackson Hole

Sun 6/12

12:30-07:55

1 stop12h 25m

London Heathrow

Tue 8/12

06:35-21:02

2 stops21h 27m

£550

BoiseLondon

BOI Boise Air Term. Gowen Fld - LHR London Heathrow

BOILHR

Boise Air Term. Gowen Fld

Sun 6/12

10:39-09:10

2 stops15h 31m

London Heathrow

Tue 8/12

06:35-19:16

2 stops19h 41m

£552

JacksonLondon

JAC Jackson Hole - LHR London Heathrow

JACLHR

Jackson Hole

Sun 6/12

12:30-07:55

1 stop12h 25m

London Heathrow

Tue 8/12

06:35-21:02

2 stops21h 27m

£586

Fastest return journey

BoiseLondon

BOI Boise Air Term. Gowen Fld - LHR London Heathrow

BOILHR

Boise Air Term. Gowen Fld

Sun 6/12

11:30-10:45

2 stops16h 15m

London Heathrow

Tue 8/12

10:45-17:58

1 stop14h 13m

£597

BoiseLondon

BOI Boise Air Term. Gowen Fld - LHR London Heathrow

BOILHR

Boise Air Term. Gowen Fld

Sun 6/12

10:39-09:40

1 stop16h 01m

London Heathrow

Tue 8/12

06:35-19:16

2 stops19h 41m

£599

BoiseLondon

BOI Boise Air Term. Gowen Fld - LHR London Heathrow

BOILHR

Boise Air Term. Gowen Fld

Sun 6/12

10:39-09:40

1 stop16h 01m

London Heathrow

Tue 8/12

06:35-19:16

2 stops19h 41m

£600

Idaho FallsLondon

IDA Idaho Falls Fanning Field - LHR London Heathrow

IDALHR

Idaho Falls Fanning Field

Mon 7/12

07:00-09:40

1 stop19h 40m

London Heathrow

Wed 9/12

06:35-17:22

2 stops41h 47m

£604

JacksonLondon

JAC Jackson Hole - LHR London Heathrow

JACLHR

Jackson Hole

Sun 6/12

16:25-20:35

2 stops21h 10m

London Heathrow

Tue 8/12

11:10-10:03

2 stops29h 53m

£607

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 Idaho to London Heathrow Airport

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

Other information

What is the cheapest month to fly to London Heathrow Airport?

In general, November is the cheapest month to fly from Idaho to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £468. The month of October is another great option to travel to London Heathrow Airport, with average flight prices from Idaho averaging around £594.

Cheap Idaho to London Heathrow Airport flight deals and tips

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

Best price found	£240
Fastest flight time	12h 00m
Direct flights	None

The best one-way flight to London Heathrow Airport from Idaho in the past 72 hours is £240. The best return flight deal from Idaho to London Heathrow Airport found on momondo in the last 72 hours is £547.

The fastest flight from Idaho to London Heathrow Airport takes 12h 00m

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

Search flight deals

Frequently asked questions about flying from Idaho to London Heathrow Airport

When did momondo last update prices for flights from Idaho to London Heathrow Airport?
Prices for flights from Idaho to London Heathrow Airport are updated daily.
How old do you have to be to fly from Idaho to London Heathrow Airport?
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 Idaho to London Heathrow Airport.
What documentation or ID do you need to fly to London Heathrow Airport?
The travel and health documents required for your trip to London Heathrow Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London Heathrow Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Eastbourne

Wembley

Gatwick

Milton Keynes

Stratford-upon-Avon

Luton

Southend-on-Sea

Slough

Northampton

Ipswich

Maidstone

Swindon

Folkestone

Hastings

Ilford

Poole

Canterbury

Chichester

Hayes

Guildford

Why use momondo?

Why should I use momondo to find a flight deal from Idaho to London?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Idaho to London for you.

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

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

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

Once all potential Idaho to London flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Idaho to London right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Idaho to London now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to London and let you know when they change.