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 Manchester and flying into Boise (one of the most popular routes), then the duration is 17h 18m on average. Another popular route from United Kingdom to Idaho is flying from London to Boise, which will take roughly 17h 54m. Keep in mind that layovers or delays could extend your travel time.

What is the cheapest airline that flies from United Kingdom to Idaho?

Lufthansa, United Airlines, and Delta are the most popular carriers operating from United Kingdom to Idaho

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

Prices for flights from United Kingdom to Idaho are updated daily.

How old do you have to be to fly from United Kingdom to Idaho?

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 United Kingdom to Idaho.

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

The necessary travel and health documents for your Idaho trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$436 Cheap Flights from the United Kingdom to Idaho in 2026

1 adult

0 bags

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from the United Kingdom to Idaho

Round-trip

One-way

Last minute

Recent round-trip flight deals from the United Kingdom to Idaho

Enter your travel dates to find the best prices.

8:00 am - 6:36 pm

LHR

GEG

18h 36m

1 stop

7:10 am - 9:00 am

GEG

LHR

17h 50m

1 stop

$624United Airlines

Fri, May 1 - Tue, May 5

8:45 am - 11:02 pm

LHR

BOI

21h 17m

2 stops

7:40 am - 10:10 am

BOI

LHR

19h 30m

2 stops

$665Multiple Airlines

Tue, Apr 14 - Tue, Apr 21

8:20 am - 11:02 pm

LHR

BOI

21h 42m

1 stop

7:40 am - 12:45 pm

BOI

LHR

22h 05m

2 stops

$687Multiple Airlines

Tue, Apr 14 - Tue, Apr 21

2:50 pm - 9:22 pm

LHR

BOI

13h 32m

1 stop

10:35 am - 9:40 am

BOI

LHR

16h 05m

1 stop

$775Lufthansa

Mon, Apr 13 - Mon, Apr 20

7:25 am - 9:35 pm

LHR

GEG

22h 10m

2 stops

7:00 am - 2:10 pm

GEG

LHR

23h 10m

1 stop

$795Lufthansa

Thu, Apr 23 - Mon, Apr 27

3:40 pm - 10:57 pm

LGW

BOI

38h 17m

2 stops

4:38 pm - 2:40 pm

BOI

LGW

39h 02m

2 stops

$901Icelandair

Mon, Apr 20 - Mon, Apr 27

3:40 pm - 10:57 pm

LGW

BOI

38h 17m

2 stops

4:38 pm - 2:40 pm

BOI

LGW

39h 02m

2 stops

$905Icelandair

Mon, Apr 20 - Mon, Apr 27

5:00 pm - 4:20 pm

LGW

GEG

31h 20m

2 stops

12:36 pm - 4:00 pm

GEG

LGW

19h 24m

2 stops

$967Air France

Fri, May 1 - Tue, May 5

5:50 pm - 9:05 pm

LCY

GEG

35h 15m

2 stops

12:36 pm - 6:30 pm

GEG

LCY

21h 54m

2 stops

$978KLM

Thu, Apr 30 - Tue, May 5

10:55 am - 10:16 pm

LHR

IDA

18h 21m

1 stop

6:58 pm - 10:00 am

IDA

LHR

32h 02m

1 stop

$1,090KLM

Sun, Apr 12 - Sun, Apr 19

United Airlines flights from United Kingdom to Idaho

Our best United Airlines deals on United Kingdom to Idaho flight tickets

United Airlines

May 1

LHR8:00 amLondon Heathrow

18h 36m

1 stop

GEG6:36 pmSpokane

May 5

GEG7:10 amSpokane

17h 50m

1 stop

LHR9:00 amLondon Heathrow

$624

United Airlines

Apr 20

LHR7:30 amLondon Heathrow

19h 23m

2 stops

BOI7:53 pmBoise Air Term. Gowen Fld

Apr 27

BOI9:26 amBoise Air Term. Gowen Fld

18h 44m

1 stop

LHR11:10 amLondon Heathrow

$769

United Airlines

Apr 20

LHR7:25 amLondon Heathrow

19h 28m

2 stops

BOI7:53 pmBoise Air Term. Gowen Fld

Apr 27

BOI5:00 amBoise Air Term. Gowen Fld

17h 55m

2 stops

LHR5:55 amLondon Heathrow

$770

Lufthansa flights from United Kingdom to Idaho

Our best Lufthansa deals on United Kingdom to Idaho flight tickets

Lufthansa

Apr 13

LHR2:50 pmLondon Heathrow

13h 32m

1 stop

BOI9:22 pmBoise Air Term. Gowen Fld

Apr 20

BOI10:35 amBoise Air Term. Gowen Fld

16h 05m

1 stop

LHR9:40 amLondon Heathrow

$775

Lufthansa

Apr 23

LHR6:55 amLondon Heathrow

22h 40m

2 stops

GEG9:35 pmSpokane

Apr 27

GEG12:35 pmSpokane

17h 35m

1 stop

LHR2:10 pmLondon Heathrow

$795

Lufthansa

Apr 20

LHR6:30 amLondon Heathrow

18h 35m

2 stops

BOI6:05 pmBoise Air Term. Gowen Fld

Apr 27

BOI2:37 pmBoise Air Term. Gowen Fld

14h 43m

1 stop

LHR12:20 pmLondon Heathrow

$796

Fly from

Fly to

Route

Depart

Return

Price

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Fri 5/1

8:00 am-6:36 pm

1 stop18h 36m

Spokane

Tue 5/5

7:10 am-9:00 am

1 stop17h 50m

$624

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Tue 4/14

8:45 am-11:02 pm

2 stops21h 17m

Boise Air Term. Gowen Fld

Tue 4/21

7:40 am-10:10 am

2 stops19h 30m

$665

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Tue 4/14

8:20 am-11:02 pm

1 stop21h 42m

Boise Air Term. Gowen Fld

Tue 4/21

7:40 am-12:45 pm

2 stops22h 05m

$687

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Mon 4/13

2:50 pm-9:22 pm

1 stop13h 32m

Boise Air Term. Gowen Fld

Mon 4/20

10:35 am-9:40 am

1 stop16h 05m

$775

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Thu 4/23

7:25 am-9:35 pm

2 stops22h 10m

Spokane

Mon 4/27

7:00 am-2:10 pm

1 stop23h 10m

$795

LondonBoise

LGW - BOI

LGWBOI

London Gatwick

Mon 4/20

3:40 pm-10:57 pm

2 stops38h 17m

Boise Air Term. Gowen Fld

Mon 4/27

4:38 pm-2:40 pm

2 stops39h 02m

$901

LondonBoise

LGW - BOI

LGWBOI

London Gatwick

Mon 4/20

3:40 pm-10:57 pm

2 stops38h 17m

Boise Air Term. Gowen Fld

Mon 4/27

4:38 pm-2:40 pm

2 stops39h 02m

$905

LondonSpokane

LGW - GEG

LGWGEG

London Gatwick

Fri 5/1

5:00 pm-4:20 pm

2 stops31h 20m

Spokane

Tue 5/5

12:36 pm-4:00 pm

2 stops19h 24m

$967

LondonSpokane

LCY - GEG

LCYGEG

London City

Thu 4/30

5:50 pm-9:05 pm

2 stops35h 15m

Spokane

Tue 5/5

12:36 pm-6:30 pm

2 stops21h 54m

$978

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sun 4/12

10:55 am-10:16 pm

1 stop18h 21m

Idaho Falls Fanning Field

Sun 4/19

6:58 pm-10:00 am

1 stop32h 02m

$1,090

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from United Kingdom 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

Other information

What is the cheapest month to fly to Idaho?

In general, January is the cheapest month to fly from United Kingdom to Idaho. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $753. If you don’t want to visit Idaho in January, then you should wait until September to fly from United Kingdom, when ticket prices are also cheap, with an average price of $790.

How far in advance should I book a flight to Idaho?

You are more likely to see cheaper flights to Idaho from United Kingdom when booking weeks ahead of your departure date. In general, you can expect to find flights to Idaho for around $1,014 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Idaho from United Kingdom for as low as $780 on momondo.

Can stopping save me money on United Kingdom to Idaho flights?

You could potentially save up to 14% on your flight if you consider stops on a United Kingdom to Idaho flight.

Cheap United Kingdom to Idaho flight deals and tips

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

Fastest flight time	14h 15m
Direct flights	None

The fastest flight from United Kingdom to Idaho takes 14h 15m

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

Search flight deals

When did momondo last update prices for flights from United Kingdom to Idaho?
Prices for flights from United Kingdom to Idaho are updated daily.
How old do you have to be to fly from United Kingdom to Idaho?
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 United Kingdom to Idaho.
What documentation or ID do you need to fly to Idaho?
The necessary travel and health documents for your Idaho trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking 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 from United Kingdom to Idaho?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from United Kingdom to Idaho. momondo saves you time and could save you money on your trip.

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

Yes. momondo allows you to filter the results for United Kingdom to Idaho flights to just show those with flexible booking policies.

How can momondo help me find flights from United Kingdom 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 United Kingdom to Idaho.

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

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