How long is the flight from United Kingdom to Idaho?

Flight times from United Kingdom to Idaho vary, but if you’re flying out of London Heathrow and flying into Boise Air Term. Gowen Fld (one of the most popular routes), then the duration is 17h 55m on average. Another popular route from United Kingdom to Idaho is flying from Manchester to Boise Air Term. Gowen Fld, which will take roughly . Keep in mind that layovers or delays could extend your travel time.

£403 Cheap Flights to Idaho in 2026/27

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Recent flights found to popular cities in Idaho

Find flights to these popular cities in Idaho from your nearest airport.

Flights to Boise

Search all flight deals to Boise

United Airlines

5 Jan

LHR

27h 52m

2 stops

BOI

12 Jan

BOI

30h 45m

2 stops

LHR

£700

Alaska Airlines

11 Dec

LHR

30h 34m

1 stop

BOI

24 Dec

BOI

15h 08m

1 stop

LHR

£720

Multiple Airlines

7 Dec

MAN

18h 02m

2 stops

BOI

13 Jan

BOI

23h 43m

2 stops

MAN

£738

Multiple Airlines

7 Dec

MAN

18h 02m

2 stops

BOI

13 Jan

BOI

23h 43m

2 stops

MAN

£739

United Airlines

27 Nov

LHR

20h 35m

2 stops

BOI

4 Dec

BOI

20h 30m

2 stops

LHR

£742

Alaska Airlines

21 Nov

LHR

31h 43m

1 stop

BOI

28 Nov

BOI

22h 47m

1 stop

LHR

£744

Alaska Airlines

21 Nov

LHR

31h 43m

1 stop

BOI

28 Nov

BOI

22h 47m

1 stop

LHR

£746

Alaska Airlines

21 Nov

LHR

31h 43m

1 stop

BOI

28 Nov

BOI

22h 47m

1 stop

LHR

£747

Alaska Airlines

21 Nov

LHR

31h 43m

1 stop

BOI

28 Nov

BOI

22h 47m

1 stop

LHR

£747

Alaska Airlines

21 Nov

LHR

31h 43m

1 stop

BOI

28 Nov

BOI

22h 47m

1 stop

LHR

£749

Multiple Airlines

5 Feb

LHR

17h 55m

2 stops

BOI

12 Feb

BOI

20h 20m

2 stops

LHR

£753

United Airlines

5 Jan

LHR

35h 15m

1 stop

BOI

12 Jan

BOI

32h 30m

2 stops

LHR

£765

Flights to Idaho Falls

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Alaska Airlines

28 Jan

LHR

31h 36m

1 stop

IDA

1 Feb

IDA

21h 20m

1 stop

LHR

£730

Alaska Airlines

28 Jan

LHR

31h 36m

1 stop

IDA

1 Feb

IDA

15h 24m

1 stop

LHR

£731

Alaska Airlines

28 Jan

LHR

31h 36m

1 stop

IDA

1 Feb

IDA

15h 24m

1 stop

LHR

£842

Alaska Airlines

28 Jan

LHR

31h 36m

1 stop

IDA

1 Feb

IDA

15h 24m

1 stop

LHR

£843

Alaska Airlines

28 Jan

LHR

31h 36m

1 stop

IDA

1 Feb

IDA

15h 24m

1 stop

LHR

£845

Multiple Airlines

17 Nov

LHR

16h 53m

1 stop

IDA

30 Nov

IDA

37h 42m

2 stops

LHR

£872

American Airlines

17 Nov

LHR

20h 23m

1 stop

IDA

30 Nov

IDA

21h 10m

1 stop

LHR

£891

Alaska Airlines

28 Jan

LHR

15h 08m

1 stop

IDA

1 Feb

IDA

37h 22m

2 stops

LHR

£892

Alaska Airlines

28 Jan

LHR

15h 08m

1 stop

IDA

1 Feb

IDA

37h 22m

2 stops

LHR

£893

Alaska Airlines

28 Jan

LHR

15h 08m

1 stop

IDA

1 Feb

IDA

37h 22m

2 stops

LHR

£895

American Airlines

14 Dec

LGW

32h 56m

2 stops

IDA

21 Dec

IDA

18h 30m

2 stops

LGW

£895

Finnair

15 Dec

LHR

20h 29m

1 stop

IDA

22 Dec

IDA

19h 15m

1 stop

LHR

£926

Flights to Hailey

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Alaska Airlines

15 Nov

LHR

27h 06m

1 stop

SUN

6 Dec

SUN

17h 29m

1 stop

LHR

£725

Air France

15 Nov

LHR

35h 36m

2 stops

SUN

6 Dec

SUN

35h 07m

2 stops

LHR

£886

United Airlines

14 Jan

LHR

52h 04m

2 stops

SUN

18 Jan

SUN

17h 55m

2 stops

LHR

£921

United Airlines

14 Jan

LHR

52h 04m

2 stops

SUN

18 Jan

SUN

16h 11m

1 stop

LHR

£923

United Airlines

14 Jan

LHR

52h 04m

2 stops

SUN

18 Jan

SUN

19h 40m

1 stop

LHR

£924

Virgin Atlantic

15 Nov

LHR

18h 26m

1 stop

SUN

16 Dec

SUN

33h 22m

2 stops

LHR

£925

Air France

15 Nov

LGW

36h 26m

2 stops

SUN

6 Dec

SUN

19h 47m

2 stops

LGW

£926

United Airlines

14 Jan

LHR

52h 04m

2 stops

SUN

18 Jan

SUN

19h 40m

1 stop

LHR

£930

United Airlines

14 Jan

LHR

52h 04m

2 stops

SUN

18 Jan

SUN

37h 09m

2 stops

LHR

£931

Multiple Airlines

15 Nov

LGW

49h 41m

2 stops

SUN

30 Dec

SUN

36h 01m

2 stops

LGW

£939

Virgin Atlantic

15 Nov

LHR

19h 21m

2 stops

SUN

16 Dec

SUN

33h 22m

2 stops

LHR

£955

Multiple Airlines

15 Nov

LHR

18h 26m

1 stop

SUN

16 Dec

SUN

14h 02m

1 stop

LHR

£961

Find the cheapest flights from the United Kingdom to Idaho

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Recent return flight deals from the United Kingdom to Idaho

Enter your travel dates to find the best prices.

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

£700United 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

£720Alaska Airlines

Fri, 11 Dec - Thu, 24 Dec

14:45 - 10:51LHR London Heathrow-SUN Hailey Sun Valley-Friedman

27h 06m1 stop Seattle/Tacoma Intl

11:51 - 12:20SUN Hailey Sun Valley-Friedman-LHR London Heathrow

17h 29m1 stop Seattle/Tacoma Intl

£725Alaska Airlines

Sun, 15 Nov - Sun, 6 Dec

09:50 - 20:52MAN Manchester-BOI Boise Air Term. Gowen Fld

18h 02m2 stops Dublin San Francisco

10:02 - 16:45BOI Boise Air Term. Gowen Fld-MAN Manchester

23h 43m2 stops San Francisco Dublin

£738Multiple Airlines

Mon, 7 Dec - Wed, 13 Jan

09:50 - 20:52MAN Manchester-BOI Boise Air Term. Gowen Fld

18h 02m2 stops Dublin San Francisco

10:02 - 16:45BOI Boise Air Term. Gowen Fld-MAN Manchester

23h 43m2 stops San Francisco Dublin

£739Multiple Airlines

Mon, 7 Dec - Wed, 13 Jan

13:45 - 21:15LHR London Heathrow-BOI Boise Air Term. Gowen Fld

14h 30m1 stop San Francisco

06:10 - 12:00BOI Boise Air Term. Gowen Fld-LHR London Heathrow

22h 50m2 stops San Francisco Chicago O'Hare Intl

£742United Airlines

Fri, 27 Nov - Fri, 4 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

£904Virgin Atlantic

Mon, 14 Dec - Mon, 21 Dec

17:45 - 23:15MAN Manchester-BOI Boise Air Term. Gowen Fld

36h 30m2 stops Frankfurt am Main Chicago O'Hare Intl

12:36 - 17:00BOI Boise Air Term. Gowen Fld-MAN Manchester

21h 24m2 stops Chicago O'Hare Intl Frankfurt am Main

£904Lufthansa

Tue, 5 Jan - Tue, 12 Jan

12:40 - 22:51EDI Edinburgh Turnhouse-BOI Boise Air Term. Gowen Fld

41h 11m2 stops Frankfurt am Main Chicago O'Hare Intl

14:51 - 23:20BOI Boise Air Term. Gowen Fld-EDI Edinburgh Turnhouse

25h 29m2 stops Denver Intl Frankfurt am Main

£910Lufthansa

Fri, 13 Nov - Tue, 17 Nov

10:45 - 22:11LHR London Heathrow-SUN Hailey Sun Valley-Friedman

18h 26m1 stop Salt Lake City

15:23 - 07:45SUN Hailey Sun Valley-Friedman-LHR London Heathrow

33h 22m2 stops Salt Lake City Detroit Metropolitan Wayne County

£925Virgin Atlantic

Sun, 15 Nov - Wed, 16 Dec

Fly from

Route

Depart

Return

Price

Cheapest return flight

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

£700

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

£720

LondonHailey

LHR London Heathrow - SUN Hailey Sun Valley-Friedman

LHRSUN

London Heathrow

Sun 15/11

14:45-10:51

1 stop27h 06m

Hailey Sun Valley-Friedman

Sun 6/12

11:51-12:20

1 stop17h 29m

£725

ManchesterBoise

MAN Manchester - BOI Boise Air Term. Gowen Fld

MANBOI

Manchester

Mon 7/12

09:50-20:52

2 stops18h 02m

Boise Air Term. Gowen Fld

Wed 13/1

10:02-16:45

2 stops23h 43m

£738

ManchesterBoise

MAN Manchester - BOI Boise Air Term. Gowen Fld

MANBOI

Manchester

Mon 7/12

09:50-20:52

2 stops18h 02m

Boise Air Term. Gowen Fld

Wed 13/1

10:02-16:45

2 stops23h 43m

£739

Fastest return journey

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Fri 27/11

13:45-21:15

1 stop14h 30m

Boise Air Term. Gowen Fld

Fri 4/12

06:10-12:00

2 stops22h 50m

£742

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

£904

ManchesterBoise

MAN Manchester - BOI Boise Air Term. Gowen Fld

MANBOI

Manchester

Tue 5/1

17:45-23:15

2 stops36h 30m

Boise Air Term. Gowen Fld

Tue 12/1

12:36-17:00

2 stops21h 24m

£904

EdinburghBoise

EDI Edinburgh Turnhouse - BOI Boise Air Term. Gowen Fld

EDIBOI

Edinburgh Turnhouse

Fri 13/11

12:40-22:51

2 stops41h 11m

Boise Air Term. Gowen Fld

Tue 17/11

14:51-23:20

2 stops25h 29m

£910

LondonHailey

LHR London Heathrow - SUN Hailey Sun Valley-Friedman

LHRSUN

London Heathrow

Sun 15/11

10:45-22:11

1 stop18h 26m

Hailey Sun Valley-Friedman

Wed 16/12

15:23-07:45

2 stops33h 22m

£925

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

Idaho flights insights and trends

Explore insights for your Idaho flight to craft the best travel plan

Airlines

Other information

Which airlines fly to Idaho?

United Airlines, Virgin Atlantic and Alaska Airlines are the top three most popular airlines that fly to Idaho from United Kingdom 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 5 different airlines that fly to Idaho on a routine basis, so you have a few additional options to choose from.

Cheapest flights to cities in Idaho

Click on the cities below to find out when it's cheapest to fly to Idaho from United Kingdom

Boise

Find flights to Boise

Cheap Idaho flight deals and tips

Summary info about Idaho flight prices, duration and airlines

Best One-Way Price	£403
Best Round-Trip Price	£700
Fastest flight time	23h 38m

The best one-way flight price to Idaho from United Kingdom in the last 5 days is £403 (London Heathrow to Idaho Falls Fanning Field).

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The best return flight price to Idaho from United Kingdom in the last 5 days is £700 (London Heathrow to Boise Air Term. Gowen Fld).

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The fastest flight to Idaho from United Kingdom takes 23h 38m (London Heathrow to Hailey Sun Valley-Friedman).

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Frequently asked questions about flying to Idaho

What is the cheapest flight I can find to Idaho?

The average flight to Idaho costs £328/per person and the cheapest flight to Idaho is £257/per person. This price varies based on a multitude of factors such as departure airport, airline, time of booking and when you plan on travelling.

What is the best airport to fly into to visit Boise?

85% of momondo users visit Boise more often than any other city in Idaho. When travelling to Boise, typically the most convenient airport to fly into is Boise Airport.

What is the weather like in Idaho?

Temperatures in Idaho can vary between -1 °C and 24 °C based on the time of year. Typically, the coldest month in Idaho will be December, and the warmest month will be July. It is also worth noting that those looking to avoid rain and/or snow should consider travelling to Idaho in August, July, and September, as that is when precipitation is least likely.

Which airlines fly to Idaho?

Of the 5 airlines that fly to Idaho, United Airlines, Lufthansa and Virgin Atlantic happen to be the most favoured based on our user data. United Airlines is the most popular among the three airlines, with 37% of users choosing them for their travels to Idaho.

When did momondo last update prices for flights to Idaho?

Prices for flights to Idaho were last updated today.

How many operators does momondo search for flights to Idaho?

As of November 2026, there are 5 operators available to choose from for flights to Idaho.

How old do you have to be to fly 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 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.

Why use momondo?

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

Finding the right flight to Idaho is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. These options can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Idaho quick and easy, saving you time and money.

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

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

How can momondo help me find flights 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 to Idaho.

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

Yes. momondo can track flight prices for Idaho and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.