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 19h 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.

£455 Cheap Flights to Idaho in 2026

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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

Scandinavian Airlines

11 Sept

LHR

19h 00m

2 stops

BOI

26 Sept

BOI

24h 06m

2 stops

LHR

£569

Scandinavian Airlines

3 Oct

LHR

22h 54m

2 stops

BOI

10 Oct

BOI

22h 51m

3 stops

LHR

£585

Scandinavian Airlines

11 Sept

LHR

19h 00m

2 stops

BOI

26 Sept

BOI

23h 26m

3 stops

LHR

£588

United Airlines

4 Sept

LHR

17h 49m

1 stop

BOI

11 Sept

BOI

17h 37m

1 stop

LHR

£605

Scandinavian Airlines

3 Oct

LHR

19h 00m

2 stops

BOI

10 Oct

BOI

28h 06m

2 stops

LHR

£612

Scandinavian Airlines

11 Sept

LHR

28h 35m

3 stops

BOI

26 Sept

BOI

23h 26m

3 stops

LHR

£623

United Airlines

6 Oct

LHR

22h 59m

2 stops

BOI

13 Oct

BOI

13h 50m

1 stop

LHR

£689

Multiple Airlines

24 Oct

LHR

54h 37m

2 stops

BOI

8 Nov

BOI

12h 59m

1 stop

LHR

£692

Multiple Airlines

24 Oct

LHR

18h 30m

2 stops

BOI

7 Nov

BOI

32h 28m

1 stop

LHR

£693

Scandinavian Airlines

23 Oct

LHR

34h 34m

2 stops

BOI

8 Nov

BOI

41h 00m

2 stops

LHR

£694

Multiple Airlines

17 Oct

LHR

55h 47m

2 stops

BOI

1 Nov

BOI

21h 00m

1 stop

LHR

£695

Multiple Airlines

24 Oct

LHR

18h 30m

2 stops

BOI

7 Nov

BOI

32h 28m

1 stop

LHR

£696

Flights to Idaho Falls

Search all flight deals to Idaho Falls

Alaska Airlines

1 Sept

LHR

29h 20m

1 stop

IDA

25 Sept

IDA

18h 04m

1 stop

LHR

£765

Finnair

1 Sept

LHR

17h 50m

2 stops

IDA

25 Sept

IDA

20h 15m

2 stops

LHR

£766

Finnair

1 Sept

LHR

20h 00m

2 stops

IDA

25 Sept

IDA

20h 15m

2 stops

LHR

£767

Finnair

1 Sept

LHR

19h 25m

1 stop

IDA

25 Sept

IDA

37h 07m

2 stops

LHR

£768

Finnair

1 Sept

LHR

18h 15m

1 stop

IDA

25 Sept

IDA

20h 15m

2 stops

LHR

£812

Finnair

19 Sept

LHR

30h 15m

2 stops

IDA

27 Sept

IDA

20h 30m

2 stops

LHR

£817

Finnair

1 Sept

LHR

18h 15m

1 stop

IDA

25 Sept

IDA

19h 05m

1 stop

LHR

£830

Finnair

1 Sept

LHR

18h 15m

1 stop

IDA

25 Sept

IDA

16h 20m

1 stop

LHR

£837

Finnair

1 Sept

LHR

15h 25m

1 stop

IDA

25 Sept

IDA

19h 10m

1 stop

LHR

£840

Delta

1 Sept

LHR

19h 05m

2 stops

IDA

25 Sept

IDA

18h 13m

2 stops

LHR

£849

Finnair

1 Sept

LHR

18h 15m

1 stop

IDA

25 Sept

IDA

15h 17m

1 stop

LHR

£851

Multiple Airlines

19 Sept

LHR

18h 27m

1 stop

IDA

27 Sept

IDA

32h 03m

1 stop

LHR

£869

Flights to Hailey

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United Airlines

31 Oct

LHR

38h 18m

2 stops

SUN

4 Nov

SUN

12h 06m

1 stop

LHR

£952

United Airlines

31 Oct

LHR

38h 18m

2 stops

SUN

4 Nov

SUN

12h 06m

1 stop

LHR

£954

United Airlines

31 Oct

LHR

38h 09m

2 stops

SUN

4 Nov

SUN

12h 11m

1 stop

LHR

£955

United Airlines

31 Oct

LHR

33h 34m

2 stops

SUN

4 Nov

SUN

32h 51m

2 stops

LHR

£957

United Airlines

31 Oct

LHR

33h 18m

1 stop

SUN

4 Nov

SUN

12h 06m

1 stop

LHR

£976

United Airlines

31 Oct

LHR

33h 18m

1 stop

SUN

4 Nov

SUN

12h 06m

1 stop

LHR

£977

United Airlines

31 Oct

LHR

33h 18m

1 stop

SUN

4 Nov

SUN

12h 06m

1 stop

LHR

£978

United Airlines

31 Oct

LHR

33h 09m

1 stop

SUN

4 Nov

SUN

12h 11m

1 stop

LHR

£980

United Airlines

31 Oct

LHR

33h 09m

1 stop

SUN

4 Nov

SUN

12h 11m

1 stop

LHR

£982

Delta

17 Aug

LHR

22h 38m

2 stops

SUN

24 Aug

SUN

37h 40m

2 stops

LHR

£1,098

KLM

10 Aug

LHR

32h 13m

2 stops

SUN

17 Aug

SUN

19h 20m

1 stop

LHR

£1,107

KLM

10 Aug

LHR

32h 13m

2 stops

SUN

18 Aug

SUN

16h 59m

2 stops

LHR

£1,110

Find the cheapest flights from the United Kingdom to Idaho

Return

One-way

Last minute

Recent return flight deals from the United Kingdom to Idaho

Enter your travel dates to find the best prices.

19:30 - 17:00

LHR

GEG

29h 30m

2 stops

13:00 - 13:35

GEG

LHR

16h 35m

2 stops

£569Scandinavian Airlines

Fri, 4 Sep - Fri, 11 Sep

06:40 - 18:40

LHR

BOI

19h 00m

2 stops

10:34 - 17:40

BOI

LHR

24h 06m

2 stops

£569Scandinavian Airlines

Fri, 11 Sep - Sat, 26 Sep

06:40 - 22:34

LHR

BOI

22h 54m

2 stops

10:34 - 16:25

BOI

LHR

22h 51m

3 stops

£585Scandinavian Airlines

Sat, 3 Oct - Sat, 10 Oct

10:35 - 21:24

LHR

BOI

17h 49m

1 stop

08:23 - 09:00

BOI

LHR

17h 37m

1 stop

£605United Airlines

Fri, 4 Sep - Fri, 11 Sep

08:00 - 23:59

LHR

BOI

22h 59m

2 stops

14:20 - 11:10

BOI

LHR

13h 50m

1 stop

£689United Airlines

Tue, 6 Oct - Tue, 13 Oct

10:35 - 22:54

LGW

GEG

20h 19m

2 stops

15:30 - 16:00

GEG

LGW

16h 30m

2 stops

£733Virgin Atlantic

Tue, 8 Sep - Tue, 6 Oct

10:35 - 22:54

LGW

GEG

20h 19m

2 stops

15:30 - 16:00

GEG

LGW

16h 30m

2 stops

£734Virgin Atlantic

Tue, 8 Sep - Tue, 6 Oct

14:10 - 15:28

LHR

JAC

32h 18m

2 stops

09:28 - 14:10

JAC

LHR

21h 42m

1 stop

£872Lufthansa

Fri, 11 Sep - Tue, 22 Sep

15:40 - 23:59

LGW

GEG

40h 19m

2 stops

16:41 - 14:40

GEG

LGW

37h 59m

2 stops

£899Icelandair

Wed, 30 Sep - Sun, 4 Oct

16:00 - 10:03

LHR

JAC

25h 03m

2 stops

10:51 - 09:10

JAC

LHR

15h 19m

2 stops

£908Lufthansa

Mon, 11 Jan - Mon, 25 Jan

Fly from

Route

Depart

Return

Price

Cheapest return flight

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Fri 4/9

19:30-17:00

2 stops29h 30m

Spokane

Fri 11/9

13:00-13:35

2 stops16h 35m

£569

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 11/9

06:40-18:40

2 stops19h 00m

Boise Air Term. Gowen Fld

Sat 26/9

10:34-17:40

2 stops24h 06m

£569

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Sat 3/10

06:40-22:34

2 stops22h 54m

Boise Air Term. Gowen Fld

Sat 10/10

10:34-16:25

3 stops22h 51m

£585

Fastest return journey

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 4/9

10:35-21:24

1 stop17h 49m

Boise Air Term. Gowen Fld

Fri 11/9

08:23-09:00

1 stop17h 37m

£605

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Tue 6/10

08:00-23:59

2 stops22h 59m

Boise Air Term. Gowen Fld

Tue 13/10

14:20-11:10

1 stop13h 50m

£689

LondonSpokane

LGW - GEG

LGWGEG

London Gatwick

Tue 8/9

10:35-22:54

2 stops20h 19m

Spokane

Tue 6/10

15:30-16:00

2 stops16h 30m

£733

LondonSpokane

LGW - GEG

LGWGEG

London Gatwick

Tue 8/9

10:35-22:54

2 stops20h 19m

Spokane

Tue 6/10

15:30-16:00

2 stops16h 30m

£734

LondonJackson

LHR - JAC

LHRJAC

London Heathrow

Fri 11/9

14:10-15:28

2 stops32h 18m

Jackson Hole

Tue 22/9

09:28-14:10

1 stop21h 42m

£872

LondonSpokane

LGW - GEG

LGWGEG

London Gatwick

Wed 30/9

15:40-23:59

2 stops40h 19m

Spokane

Sun 4/10

16:41-14:40

2 stops37h 59m

£899

LondonJackson

LHR - JAC

LHRJAC

London Heathrow

Mon 11/1

16:00-10:03

2 stops25h 03m

Jackson Hole

Mon 25/1

10:51-09:10

2 stops15h 19m

£908

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 Icelandair 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 44% of people opting to fly with this airline when travelling to Idaho. Keep in mind that there are 7 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	£455
Best Round-Trip Price	£569
Fastest flight time	18h 28m

The best one-way flight price to Idaho from United Kingdom in the last 5 days is £455 (London Heathrow to Spokane).

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The best return flight price to Idaho from United Kingdom in the last 5 days is £569 (London Heathrow to Spokane).

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The fastest flight to Idaho from United Kingdom takes 18h 28m (London Heathrow to Boise Air Term. Gowen Fld).

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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 £398/per person and the cheapest flight to Idaho is £306/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?

81% 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 7 airlines that fly to Idaho, United Airlines, Virgin Atlantic and Lufthansa happen to be the most favoured based on our user data. United Airlines is the most popular among the three airlines, with 48% 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 July 2026, there are 7 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.