How long does it take to fly to London?

Flight times from Idaho to London vary, but if you’re flying out of Boise and flying into London Heathrow Airport (one of the most popular routes), then the duration is 12h 05m on average. Another popular route from Idaho to London is flying from Idaho Falls to London Heathrow Airport, which will take roughly 13h 50m. Keep in mind that layovers or delays could extend your travel time.

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

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

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

Prices for flights from Idaho to London are updated daily.

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

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.

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

The travel and health documents required for your trip to London 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. 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 in 2026

Find the cheapest flights from Idaho to London

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One-way

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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

14:44 - 17:55BOI Boise Air Term. Gowen Fld-LCY London City

20h 11m2 stops Denver Intl Frankfurt am Main

09:15 - 21:37LCY London City-BOI Boise Air Term. Gowen Fld

19h 22m2 stops Frankfurt am Main Denver Intl

£889Lufthansa

Wed, 26 Aug - Wed, 2 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

10:14 - 14:45BOI Boise Air Term. Gowen Fld-LGW London Gatwick

21h 31m2 stops San Francisco Frankfurt am Main

10:20 - 23:44LGW London Gatwick-BOI Boise Air Term. Gowen Fld

20h 24m2 stops Frankfurt am Main Seattle/Tacoma Intl

£1,076Multiple Airlines

Wed, 26 Aug - Wed, 2 Sep

16:20 - 14:40BOI Boise Air Term. Gowen Fld-LGW London Gatwick

15h 20m2 stops Seattle/Tacoma Intl Reykjavik Keflavik Intl

13:00 - 22:33LGW London Gatwick-BOI Boise Air Term. Gowen Fld

16h 33m2 stops Reykjavik Keflavik Intl Seattle/Tacoma Intl

£1,617Icelandair

Wed, 26 Aug - Sun, 6 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

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KLM flights from Idaho to London

Our best KLM deals on Idaho to London 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

Our best United Airlines deals on Idaho to London 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

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

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?

The cheapest month to fly to London from Idaho is in November. Flight prices, which tend to average around £521, are often lower during this time because this is during the off-season. The month of October is another great option to travel to London, with average flight prices from Idaho averaging around £594.

Cheap Idaho to London flight deals and tips

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

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

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

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

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

Search flight deals

Frequently asked questions about flying from Idaho to London

When did momondo last update prices for flights from Idaho to London?
Prices for flights from Idaho to London are updated daily.
How old do you have to be to fly from Idaho to London?
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.
What documentation or ID do you need to fly to London?
The travel and health documents required for your trip to London 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. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Eastbourne

Wembley

Gatwick

Milton Keynes

Luton

Southend-on-Sea

Slough

Ipswich

Maidstone

Folkestone

Hastings

Ilford

Canterbury

Chichester

Hayes

Guildford

Bedford

Harlow

Colchester

Chelmsford

Why use momondo?

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

It is quick and easy to find Idaho to London 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 London that suits you.

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

Yes. momondo enables you to select and highlight flights to London from Idaho with this policy.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Idaho to London.

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

Yes momondo offers price alerts on flights to London from Idaho. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Cheap flights from Idaho to London from £240

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Idaho to London departing on 29/12. 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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KLM flights from Idaho to London

Our best KLM deals on Idaho to London flight tickets

United Airlines flights from Idaho to London

Our best United Airlines deals on Idaho to London flight tickets

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How to get the cheapest flight ticket from Idaho to London

What is the cheapest month to fly to London?

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

How long does it take to fly to London?

Cheap Idaho to London flight deals and tips

Best price found

Fastest flight time

Direct flights

Frequently asked questions about flying from Idaho to London

Travelling to a place near London?

Why use momondo?

An easier way to manage your London trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London

Cabin classes currently available on flights to London

List of cabin classes available on flights landing in London. Availability may vary depending on flight origin and airline.

Popular Cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo

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