Which airlines fly to Idaho?

United Airlines, Virgin Atlantic and Alaska Airlines are the top three most popular airlines that fly to Idaho from London according to our data. United Airlines is the first choice among our users, with 35% of people opting to fly with this airline when travelling to Idaho. Keep in mind that there are 4 different airlines that fly to Idaho on a routine basis, so you have a few additional options to choose from.

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

Air Canada, Alaska Airlines, and United Airlines are the most popular carriers operating from London to Idaho

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

Prices for flights from London to Idaho are refreshed on a daily basis.

How many operators does momondo search for flights from London to Idaho?

As of October 2026, there are 4 operators available to choose from for flights from London to Idaho.

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

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London 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.

£414 Cheap Flights from London to Idaho in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from London to Idaho

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One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

06:40 - 22:52LHR London Heathrow-BOI Boise Air Term. Gowen Fld

23h 12m2 stops Kastrup Copenhagen Los Angeles

16:10 - 18:30BOI Boise Air Term. Gowen Fld-LHR London Heathrow

19h 20m2 stops Los Angeles Kastrup Copenhagen

£651Scandinavian Airlines

Mon, 9 Nov - Sat, 14 Nov

18:00 - 14:52LHR London Heathrow-BOI Boise Air Term. Gowen Fld

27h 52m2 stops Toronto Pearson Intl San Francisco

16:10 - 05:55BOI Boise Air Term. Gowen Fld-LHR London Heathrow

30h 45m2 stops San Francisco Chicago O'Hare Intl

£702United Airlines

Tue, 5 Jan - Tue, 12 Jan

14:45 - 14:19LHR London Heathrow-BOI Boise Air Term. Gowen Fld

30h 34m1 stop Seattle/Tacoma Intl

14:12 - 12:20BOI Boise Air Term. Gowen Fld-LHR London Heathrow

15h 08m1 stop Seattle/Tacoma Intl

£723Alaska Airlines

Fri, 11 Dec - Thu, 24 Dec

06:30 - 16:20LHR London Heathrow-BOI Boise Air Term. Gowen Fld

16h 50m2 stops Amsterdam Schiphol Seattle/Tacoma Intl

14:00 - 10:40BOI Boise Air Term. Gowen Fld-LHR London Heathrow

13h 40m1 stop Seattle/Tacoma Intl

£723Multiple Airlines

Thu, 4 Feb - Fri, 12 Feb

14:45 - 14:20LHR London Heathrow-BOI Boise Air Term. Gowen Fld

30h 35m1 stop Seattle/Tacoma Intl

12:00 - 12:20BOI Boise Air Term. Gowen Fld-LHR London Heathrow

17h 20m1 stop Seattle/Tacoma Intl

£726Alaska Airlines

Thu, 4 Feb - Fri, 12 Feb

06:30 - 18:03LHR London Heathrow-BOI Boise Air Term. Gowen Fld

18h 33m2 stops Frankfurt am Main Denver Intl

08:15 - 11:20BOI Boise Air Term. Gowen Fld-LHR London Heathrow

20h 05m2 stops San Francisco Toronto Pearson Intl

£735Lufthansa

Mon, 23 Nov - Sun, 6 Dec

07:30 - 18:09LHR London Heathrow-BOI Boise Air Term. Gowen Fld

17h 39m2 stops Frankfurt am Main Denver Intl

16:08 - 07:10BOI Boise Air Term. Gowen Fld-LHR London Heathrow

32h 02m2 stops San Francisco Montreal Pierre Elliott Trudeau Intl

£736United Airlines

Thu, 4 Feb - Fri, 12 Feb

07:50 - 22:51LHR London Heathrow-BOI Boise Air Term. Gowen Fld

22h 01m1 stop Chicago O'Hare Intl

08:15 - 11:20BOI Boise Air Term. Gowen Fld-LHR London Heathrow

20h 05m2 stops San Francisco Toronto Pearson Intl

£759Lufthansa

Mon, 23 Nov - Sun, 6 Dec

12:20 - 18:38LHR London Heathrow-BOI Boise Air Term. Gowen Fld

13h 18m1 stop Seattle/Tacoma Intl

05:15 - 07:05BOI Boise Air Term. Gowen Fld-LHR London Heathrow

18h 50m1 stop Minneapolis St Paul

£904Virgin Atlantic

Thu, 10 Dec - Thu, 17 Dec

10:55 - 22:58LHR London Heathrow-BOI Boise Air Term. Gowen Fld

19h 03m1 stop Los Angeles

05:36 - 07:05BOI Boise Air Term. Gowen Fld-LHR London Heathrow

18h 29m1 stop Minneapolis St Paul

£907Virgin Atlantic

Mon, 14 Dec - Mon, 21 Dec

Cheap last-minute flights

Enter your travel dates to find the best prices.

06:40 - 23:04LHR London Heathrow-BOI Boise Air Term. Gowen Fld

23h 24m2 stops Kastrup Copenhagen Los Angeles

16:00 - 21:40BOI Boise Air Term. Gowen Fld-LHR London Heathrow

22h 40m2 stops Los Angeles Kastrup Copenhagen

£651Scandinavian Airlines

Wed, 4 Nov - Sun, 8 Nov

07:05 - 23:04LHR London Heathrow-BOI Boise Air Term. Gowen Fld

22h 59m3 stops Oslo Gardermoen Kastrup Copenhagen Los Angeles

16:00 - 21:35BOI Boise Air Term. Gowen Fld-LHR London Heathrow

22h 35m3 stops Los Angeles Kastrup Copenhagen Oslo Gardermoen

£657Scandinavian Airlines

Wed, 4 Nov - Sun, 8 Nov

12:15 - 22:35LHR London Heathrow-BOI Boise Air Term. Gowen Fld

17h 20m2 stops Reykjavik Keflavik Intl Denver Intl

11:15 - 10:50BOI Boise Air Term. Gowen Fld-LHR London Heathrow

16h 35m2 stops Denver Intl Reykjavik Keflavik Intl

£780Multiple Airlines

Wed, 4 Nov - Sun, 8 Nov

14:45 - 23:49LHR London Heathrow-BOI Boise Air Term. Gowen Fld

16h 04m1 stop Seattle/Tacoma Intl

10:49 - 12:20BOI Boise Air Term. Gowen Fld-LHR London Heathrow

18h 31m1 stop Seattle/Tacoma Intl

£792Alaska Airlines

Wed, 4 Nov - Sun, 8 Nov

14:45 - 22:20LHR London Heathrow-BOI Boise Air Term. Gowen Fld

14h 35m1 stop Seattle/Tacoma Intl

08:21 - 12:20BOI Boise Air Term. Gowen Fld-LHR London Heathrow

20h 59m2 stops San Francisco Seattle/Tacoma Intl

£897Alaska Airlines

Wed, 4 Nov - Mon, 23 Nov

14:45 - 23:49LHR London Heathrow-BOI Boise Air Term. Gowen Fld

16h 04m1 stop Seattle/Tacoma Intl

08:21 - 12:20BOI Boise Air Term. Gowen Fld-LHR London Heathrow

20h 59m2 stops San Francisco Seattle/Tacoma Intl

£897Alaska Airlines

Mon, 2 Nov - Mon, 23 Nov

14:45 - 22:20LHR London Heathrow-BOI Boise Air Term. Gowen Fld

14h 35m1 stop Seattle/Tacoma Intl

08:21 - 12:20BOI Boise Air Term. Gowen Fld-LHR London Heathrow

20h 59m2 stops San Francisco Seattle/Tacoma Intl

£897Alaska Airlines

Thu, 5 Nov - Mon, 23 Nov

14:45 - 23:49LHR London Heathrow-BOI Boise Air Term. Gowen Fld

16h 04m1 stop Seattle/Tacoma Intl

08:21 - 12:20BOI Boise Air Term. Gowen Fld-LHR London Heathrow

20h 59m2 stops San Francisco Seattle/Tacoma Intl

£897Alaska Airlines

Tue, 3 Nov - Mon, 23 Nov

14:45 - 23:49LHR London Heathrow-BOI Boise Air Term. Gowen Fld

16h 04m1 stop Seattle/Tacoma Intl

19:21 - 12:20BOI Boise Air Term. Gowen Fld-LHR London Heathrow

33h 59m1 stop Seattle/Tacoma Intl

£903Alaska Airlines

Mon, 2 Nov - Sat, 21 Nov

14:45 - 09:07LHR London Heathrow-BOI Boise Air Term. Gowen Fld

25h 22m1 stop Seattle/Tacoma Intl

06:33 - 12:20BOI Boise Air Term. Gowen Fld-LHR London Heathrow

22h 47m1 stop Seattle/Tacoma Intl

£904Alaska Airlines

Tue, 3 Nov - Sun, 22 Nov

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United Airlines flights from London to Idaho

Our best United Airlines deals on London to Idaho flight tickets

United Airlines

5 Jan

LHR18:00London Heathrow

27h 52m

2 stops

BOI14:52Boise Air Term. Gowen Fld

12 Jan

BOI16:10Boise Air Term. Gowen Fld

30h 45m

2 stops

LHR05:55London Heathrow

£702

United Airlines

27 Nov

LHR07:40London Heathrow

20h 35m

2 stops

BOI21:15Boise Air Term. Gowen Fld

4 Dec

BOI06:10Boise Air Term. Gowen Fld

20h 30m

2 stops

LHR09:40London Heathrow

£745

United Airlines

5 Jan

LHR07:40London Heathrow

35h 15m

1 stop

BOI11:55Boise Air Term. Gowen Fld

12 Jan

BOI16:10Boise Air Term. Gowen Fld

32h 30m

2 stops

LHR07:40London Heathrow

£768

Alaska Airlines flights from London to Idaho

Our best Alaska Airlines deals on London to Idaho flight tickets

Alaska Airlines

11 Dec

LHR14:45London Heathrow

30h 34m

1 stop

BOI14:19Boise Air Term. Gowen Fld

24 Dec

BOI14:12Boise Air Term. Gowen Fld

15h 08m

1 stop

LHR12:20London Heathrow

£723

Alaska Airlines

23 Nov

LHR14:45London Heathrow

25h 59m

1 stop

BOI09:44Boise Air Term. Gowen Fld

6 Dec

BOI19:45Boise Air Term. Gowen Fld

33h 35m

1 stop

LHR12:20London Heathrow

£726

Alaska Airlines

28 Jan

LHR14:45London Heathrow

31h 36m

1 stop

IDA15:21Idaho Falls Fanning Field

1 Feb

IDA13:56Idaho Falls Fanning Field

15h 24m

1 stop

LHR12:20London Heathrow

£729

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Mon 9/11

06:40-22:52

2 stops23h 12m

Boise Air Term. Gowen Fld

Sat 14/11

16:10-18:30

2 stops19h 20m

£651

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Tue 5/1

18:00-14:52

2 stops27h 52m

Boise Air Term. Gowen Fld

Tue 12/1

16:10-05:55

2 stops30h 45m

£702

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Fri 11/12

14:45-14:19

1 stop30h 34m

Boise Air Term. Gowen Fld

Thu 24/12

14:12-12:20

1 stop15h 08m

£723

Fastest return journey

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Thu 4/2

06:30-16:20

2 stops16h 50m

Boise Air Term. Gowen Fld

Fri 12/2

14:00-10:40

1 stop13h 40m

£723

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Thu 4/2

14:45-14:20

1 stop30h 35m

Boise Air Term. Gowen Fld

Fri 12/2

12:00-12:20

1 stop17h 20m

£726

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Mon 23/11

06:30-18:03

2 stops18h 33m

Boise Air Term. Gowen Fld

Sun 6/12

08:15-11:20

2 stops20h 05m

£735

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Thu 4/2

07:30-18:09

2 stops17h 39m

Boise Air Term. Gowen Fld

Fri 12/2

16:08-07:10

2 stops32h 02m

£736

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Mon 23/11

07:50-22:51

1 stop22h 01m

Boise Air Term. Gowen Fld

Sun 6/12

08:15-11:20

2 stops20h 05m

£759

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Thu 10/12

12:20-18:38

1 stop13h 18m

Boise Air Term. Gowen Fld

Thu 17/12

05:15-07:05

1 stop18h 50m

£904

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Mon 14/12

10:55-22:58

1 stop19h 03m

Boise Air Term. Gowen Fld

Mon 21/12

05:36-07:05

1 stop18h 29m

£907

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 London 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?

The month of April is, on average, the cheapest month to fly to Idaho from London, with most prices found around £635. If you’re not able to fly to Idaho in April, then March is your next best option. Flight prices from London to Idaho during March average around £655.

Can stopping save me money on London to Idaho flights?

You could potentially save up to 60% on your flight if you consider stops on a London to Idaho flight.

Cheap London to Idaho flight deals and tips

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

Best price found	£414
Fastest flight time	14h 29m
Direct flights	None

The best one-way flight to Idaho from London in the past 72 hours is £414. The best return flight deal from London to Idaho found on momondo in the last 72 hours is £651.

The fastest flight from London to Idaho takes 14h 29m

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

Search flight deals

Frequently asked questions about flying from London to Idaho

When did momondo last update prices for flights from London to Idaho?
Prices for flights from London to Idaho are refreshed on a daily basis.
How many operators does momondo search for flights from London to Idaho?
As of October 2026, there are 4 operators available to choose from for flights from London to Idaho.
How old do you have to be to fly from London to Idaho?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London 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.

Best airlines flying from London to Idaho

Compare and see reviews for airlines that fly from London to Idaho with momondo

Airline	Rating	Free Cancellation	Price
Lufthansa	PriceFrom £511	Free Cancellation	Rating 6.8 8,298 reviews	Search Lufthansa flights
United Airlines	PriceFrom £528	Free Cancellation	Rating 7.3 10,451 reviews	Search United Airlines flights
Alaska Airlines	PriceFrom £722	Free Cancellation	Rating 7.9 13,134 reviews	Search Alaska Airlines flights
Virgin Atlantic	PriceFrom £722	Free Cancellation	Rating 7.5 698 reviews	Search Virgin Atlantic flights

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Idaho from London.

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

Yes. All flights to Idaho from London on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

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 London to Idaho.

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

Of course. momondo tracks the price of London to Idaho flights. All you need is a valid email address and we will do the rest; it is that quick and easy.