How long is the flight from London to Idaho?

Airlines like Scandinavian Airlines, Icelandair, and Virgin Atlantic fly from London to Idaho in about 20h 34m. The time it takes to get you to your destination can typically vary by up to 20h 14m. The distance from London to Idaho is about 4643 mi. Both multi-stop and direct flights can be found to your destination and back.

In terms of precipitation, rainfall in Idaho ranges from 5.0 - 41.0 inches per month. December is typically the wettest month, when rainfall can reach 41.0 mm. August is typically the driest time to visit Idaho when rainfall is around 5.0 mm.

If weather is an important factor for your trip to Idaho, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 24.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around -1.0 C).

What are the most popular routes from London to Idaho?

While some choose either London Heathrow - Boise Air Term. Gowen Fld or London Gatwick - Spokane, London Heathrow - Spokane is the most popular route from London to Idaho.

What are the most popular airlines that fly from London to Idaho?

Consider United Airlines, Virgin Atlantic or Lufthansa when booking your flight. These represent the most popular airlines when flying from London to Idaho.

What is the cheapest time of day to fly from LON to ID?

When flying from London to Idaho, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Can I find deals for flights from London to Idaho that include hotel bookings?

Yes. In addition to deals on London to Idaho flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from London to Idaho?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Idaho.

Can I find deals for business class flights from London to Idaho?

Yes. Cheapflights offers flight deals from London to Idaho by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£351+ Cheap Flights from London to Idaho

Cheap flight deals from London to Idaho

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from London to Idaho
Explore the most affordable flight options available from London to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 7 August 2026.

Fri 4/906:40 -

2 stops20h 34m

Fri 11/913:00 -

2 stops19h 00m

Deal found 5/8£567

Fri 11/906:40 -

2 stops19h 00m

Sat 26/910:34 -

2 stops24h 06m

Deal found 4/8£581

Sat 12/906:40 -

2 stops18h 29m

Sat 19/913:00 -

3 stops19h 25m

Deal found 3/8£586

Fri 11/919:30 -

2 stops29h 39m

Sat 26/911:10 -

2 stops22h 30m

Deal found 7/8£587

Fri 4/1206:40 -

2 stops23h 14m

Mon 7/1216:14 -

2 stops40h 46m

Deal found 4/8£591

Sat 31/1006:40 -

2 stops22h 24m

Sun 15/1116:14 -

2 stops19h 16m

Deal found 2/8£613

Tue 1/916:40 -

2 stops37h 56m

Tue 8/913:37 -

1 stop14h 48m

Deal found 4/8£686

Mon 21/914:10 -

2 stops37h 06m

Mon 28/911:10 -

1 stop13h 20m

Deal found 7/8£686

Sat 12/909:55 -

1 stop20h 43m

Sat 19/907:00 -

2 stops20h 20m

Deal found 3/8£689

Tue 8/917:40 -

2 stops33h 11m

Tue 6/1011:10 -

1 stop16h 45m

Deal found 7/8£709

Wed 21/1014:10 -

2 stops40h 40m

Mon 2/1112:41 -

1 stop15h 39m

Deal found 4/8£715

Tue 8/913:00 -

2 stops40h 48m

Tue 6/1016:41 -

2 stops13h 59m

Deal found 3/8£726

Best flights from London to Idaho
Discover carefully curated flight deals from London to Idaho that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 7 August 2026.

Sat 12/906:40 -

2 stops18h 29m

Sat 19/913:00 -

3 stops19h 25m

Deal found 3/8£586

Tue 6/1013:05 -

2 stops17h 54m

Sat 17/1006:43 -

2 stops22h 12m

Deal found 3/8£672

Fri 4/1211:35 -

2 stops31h 49m

Tue 8/1211:30 -

1 stop12h 25m

Deal found 3/8£715

Tue 8/913:00 -

2 stops40h 48m

Tue 6/1016:41 -

2 stops13h 59m

Deal found 5/8£727

Tue 8/909:20 -

2 stops21h 34m

Tue 6/1015:30 -

2 stops17h 10m

Deal found 4/8£803

Tue 1/917:00 -

1 stop29h 20m

Fri 25/914:01 -

1 stop18h 04m

Deal found 3/8£811

Mon 21/909:15 -

2 stops19h 59m

Mon 28/913:05 -

2 stops20h 50m

Deal found 7/8£825

Wed 7/1010:25 -

2 stops39h 08m

Wed 14/1017:59 -

2 stops39h 01m

Deal found 4/8£831

Thu 17/911:00 -

1 stop17h 20m

Thu 24/912:15 -

1 stop13h 50m

Deal found 6/8£865

Fri 16/1009:20 -

2 stops20h 44m

Sun 1/1115:00 -

2 stops18h 35m

Deal found 7/8£1,033

Fri 2/1016:05 -

2 stops37h 22m

Sat 17/1014:41 -

2 stops41h 34m

Deal found 7/8£1,137

Fri 11/919:30 -

2 stops29h 39m

Sat 26/911:10 -

2 stops22h 30m

Deal found 7/8£587

Fri 4/1206:40 -

2 stops23h 14m

Mon 7/1216:14 -

2 stops40h 46m

Deal found 2/8£594

Sat 31/1014:45 -

2 stops34h 09m

Sun 15/1116:21 -

1 stop12h 59m

Deal found 2/8£697

Thu 5/1111:35 -

2 stops31h 03m

Sun 8/1113:00 -

1 stop34h 25m

Deal found 5/8£716

Sat 31/1006:40 -

2 stops22h 24m

Sun 15/1116:14 -

2 stops19h 16m

Deal found 2/8£613

Fri 4/1207:40 -

2 stops23h 19m

Mon 7/1214:43 -

1 stop11h 57m

Deal found 6/8£716

Sun 6/915:40 -

2 stops37h 21m

Mon 14/915:34 -

2 stops15h 06m

Deal found 7/8£828

Fri 11/906:40 -

2 stops22h 54m

Sat 26/910:34 -

2 stops24h 56m

Deal found 7/8£622

Mon 31/817:00 -

1 stop29h 20m

Mon 16/1113:53 -

1 stop15h 27m

Deal found 3/8£834

Fri 16/1010:20 -

2 stops20h 39m

Sun 1/1112:49 -

2 stops23h 31m

Deal found 7/8£764

Wed 7/1009:20 -

2 stops19h 48m

Thu 15/1015:36 -

2 stops18h 04m

Deal found 4/8£845

Fri 28/820:55 -

2 stops32h 37m

Tue 17/1106:00 -

2 stops18h 50m

Deal found 3/8£866

Tue 8/909:30 -

2 stops19h 44m

Wed 16/913:09 -

2 stops23h 31m

Deal found 5/8£727

Mon 14/1209:50 -

2 stops19h 19m

Mon 28/1206:20 -

2 stops27h 20m

Deal found 3/8£920

Wed 7/1008:25 -

2 stops22h 34m

Tue 13/1008:25 -

2 stops25h 15m

Deal found 4/8£845

Sun 30/813:00 -

2 stops33h 47m

Sun 6/911:45 -

2 stops40h 00m

Deal found 2/8£850

Tue 1/913:00 -

2 stops17h 25m

Tue 8/912:17 -

2 stops18h 23m

Deal found 4/8£773

Thu 17/917:00 -

1 stop29h 20m

Thu 24/914:01 -

1 stop18h 04m

Deal found 7/8£858

Tue 8/914:50 -

1 stop32h 16m

Tue 6/1013:05 -

2 stops36h 35m

Deal found 6/8£729

Find flight deals from London to Idaho

Round-trip from	£567
One-way from	£351
Popular in	December
Cheapest in	January
Average price	£943

Scandinavian Airlines
4/9-11/9
4 total stops
39h 34m total
London to Idaho

Search Deals

6/11
2 total stops
33h 52m total
London to Idaho

Search Deals

Highest demand for flights based on searches. 2% potential increase in price (£14 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease (£25 potential savings vs. average return price).

Search Deals

Average for round-trip flights in August 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonSpokane

LHR London Heathrow - GEG Spokane

LHRGEG

London Heathrow

Sat 12/9

06:40-17:09

2 stops18h 29m

Spokane

Sat 19/9

13:00-16:25

3 stops19h 25m

£586

LondonSpokane

LHR London Heathrow - GEG Spokane

LHRGEG

London Heathrow

Fri 11/9

19:30-17:09

2 stops29h 39m

Spokane

Sat 26/9

11:10-17:40

2 stops22h 30m

£587

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Fri 4/12

06:40-22:54

2 stops23h 14m

Boise Air Term. Gowen Fld

Mon 7/12

16:14-16:00

2 stops40h 46m

£594

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Sat 31/10

06:40-23:04

2 stops22h 24m

Boise Air Term. Gowen Fld

Sun 15/11

16:14-18:30

2 stops19h 16m

£613

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Fri 11/9

06:40-22:34

2 stops22h 54m

Boise Air Term. Gowen Fld

Sat 26/9

10:34-18:30

2 stops24h 56m

£622

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Tue 6/10

13:05-23:59

2 stops17h 54m

Boise Air Term. Gowen Fld

Sat 17/10

06:43-11:55

2 stops22h 12m

£672

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Sat 31/10

14:45-18:54

2 stops34h 09m

Boise Air Term. Gowen Fld

Sun 15/11

16:21-12:20

1 stop12h 59m

£697

LondonSpokane

LHR London Heathrow - GEG Spokane

LHRGEG

London Heathrow

Fri 4/12

11:35-11:24

2 stops31h 49m

Spokane

Tue 8/12

11:30-07:55

1 stop12h 25m

£715

LondonSpokane

LHR London Heathrow - GEG Spokane

LHRGEG

London Heathrow

Thu 5/11

11:35-10:38

2 stops31h 03m

Spokane

Sun 8/11

13:00-07:25

1 stop34h 25m

£716

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Fri 4/12

07:40-23:59

2 stops23h 19m

Boise Air Term. Gowen Fld

Mon 7/12

14:43-09:40

1 stop11h 57m

£716

Flights are sorted by cheapest return flights first.

Deals found on 5/8

Showing 1-10 of 60 resultsSorted by cheapest first

...

Best time to book a flight from London to Idaho

Have a flexible travel schedule? Discover the best time to fly to Idaho from London with our price prediction graph.

LGW-BOI

LHR-BOI

LHR-GEG

LGW-GEG

LCY-GEG

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London to Idaho

LON-USID

LGW-BOI

LHR-BOI

LHR-GEG

LGW-GEG

What is the cheapest month to book a flight from London to Idaho?

Currently, January is the cheapest month in which you can book a flight from London to Idaho (average of £568). Flying from London to Idaho in August is currently the most expensive (average of £1,053). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost for a return flight from London to Idaho?

Airfare is below average for this route at the moment.

London to Idaho flights typically cost between £763 and £1,090 in September.
The cheapest return price found within the last 5 days was £581 on Scandinavian Airlines (11 Sept–26 Sept).

Reviews of airlines servicing Idaho

Get a feel of what it's like to fly with Virgin Atlantic,United Airlines, andLufthansa from London to Idaho by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Virgin Atlantic

7.5

Good

694 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.

Virgin Atlantic

7.5

Good

694 reviews

Virgin Atlantic

7.5

Good

694 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.

United Airlines

7.4

Good

10,080 reviews

Virgin Atlantic

7.5

Good

694 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.

Lufthansa

6.8

Okay

8,178 reviews

Virgin Atlantic

7.5

Good

694 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.

Related info for your journey

How long is the flight from London to Idaho?
Airlines like Scandinavian Airlines, Icelandair, and Virgin Atlantic fly from London to Idaho in about 20h 34m. The time it takes to get you to your destination can typically vary by up to 20h 14m. The distance from London to Idaho is about 4643 mi. Both multi-stop and direct flights can be found to your destination and back.
What are the most popular routes from London to Idaho?
While some choose either London Heathrow - Boise Air Term. Gowen Fld or London Gatwick - Spokane, London Heathrow - Spokane is the most popular route from London to Idaho.
Can I find deals for flights from London to Idaho that include hotel bookings?
Yes. In addition to deals on London to Idaho flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from London to Idaho?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Idaho.
Can I find deals for business class flights from London to Idaho?
Yes. Cheapflights offers flight deals from London to Idaho by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from London to Idaho?
Currently, January is the cheapest month in which you can book a flight from London to Idaho (average of £568). Flying from London to Idaho in August is currently the most expensive (average of £1,053). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes

Complete your trip

Direct flights to United States

Flights by cabin class

Other flight options

Popular flights

Top destinations

Alternative routes for London to Idaho

Heathrow to John F Kennedy Intl flights

Heathrow to Newark flights

Heathrow to LaGuardia flights

Gatwick to John F Kennedy Intl flights

Gatwick to Newark flights

London City to John F Kennedy Intl flights

Stansted to John F Kennedy Intl flights

Heathrow to Orlando flights

Heathrow to Miami flights

Heathrow to Los Angeles flights

Gatwick to LaGuardia flights

Luton to John F Kennedy Intl flights

Manchester to John F Kennedy Intl flights

Stansted to Newark flights

Luton to Newark flights

London City to Newark flights

Heathrow to San Francisco flights

Manchester to Orlando flights

Heathrow to Boston flights

Heathrow to Dallas/Fort Worth flights

Heathrow to Las Vegas flights

Heathrow to O'Hare Intl flights

Gatwick to Orlando flights

Heathrow to Dulles Intl flights

Heathrow to Atlanta flights

Stansted to Orlando flights

Gatwick to Miami flights

Heathrow to Baltimore flights

Stansted to Miami flights

Heathrow to Hobby flights

Gatwick to Los Angeles flights

Manchester to Newark flights

Heathrow to Seattle flights

London City to Miami flights

London City to Orlando flights

Heathrow to Tampa flights

Manchester to LaGuardia flights

London City to Los Angeles flights

Stansted to Los Angeles flights

Gatwick to Boston flights

Heathrow to George Bush Intcntl flights

Luton to Miami flights

Luton to Los Angeles flights

Gatwick to San Francisco flights

Heathrow to Denver flights

Luton to Orlando flights

Heathrow to Ontario flights

Gatwick to Las Vegas flights

Stansted to San Francisco flights

London City to Boston flights

Top 4 airlines flying from London to Idaho

Airline	Cheapest	Average	Flexibility	On-time
Lufthansa	Cheapest£506	Average£745	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
United Airlines	Cheapest£550	Average£920	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Virgin Atlantic	Cheapest£598	Average£832	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Alaska Airlines	Cheapest£733	Average£947	FlexibilityNo cancel fee	On-time75%	Search Alaska Airlines flights

Fly with Cheapflights

How does Cheapflights help users find flights from London to Idaho?

Deals for London to Idaho flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from London to Idaho?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from London to Idaho for you. Better yet — we are completely free to use.

Can Cheapflights find flights from London to Idaho with no change fees?

Yes, we can. To see specific flights from London to Idaho with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from London to Idaho become cheaper?

Of course! You can now track prices for flights from London to Idaho and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from London to Idaho from £351

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from London to Idaho

Cheapest flights from London to IdahoExplore the most affordable flight options available from London to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 7 August 2026.

Explore the most affordable flight options available from London to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 7 August 2026.

Best flights from London to IdahoDiscover carefully curated flight deals from London to Idaho that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 7 August 2026.

Discover carefully curated flight deals from London to Idaho that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 7 August 2026.

Last-minute flights from London to IdahoDiscover last-minute flight deals from London to Idaho. Data last updated 7 August 2026 and is based on user searches.

Discover last-minute flight deals from London to Idaho. Data last updated 7 August 2026 and is based on user searches.

One-way flights from London to IdahoSearch for one-way flight options from London to Idaho. Find affordable one-way fares based on user searches. Data last updated 7 August 2026.

Search for one-way flight options from London to Idaho. Find affordable one-way fares based on user searches. Data last updated 7 August 2026.

Find flight deals from London to Idaho

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from London to Idaho that are best for you.

Best time to book a flight from London to Idaho

Have a flexible travel schedule? Discover the best time to fly to Idaho from London with our price prediction graph.

Cheapflights Insights

What is the cheapest month to book a flight from London to Idaho?

How much does it cost for a return flight from London to Idaho?

Airfare is below average for this route at the moment.

London to Idaho flights typically cost between £763 and £1,090 in September.The cheapest return price found within the last 5 days was £581 on Scandinavian Airlines (11 Sept–26 Sept).

Reviews of airlines servicing Idaho

Get insights into the airlines that provide service to Idaho. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Idaho. Reviews last updated 7 August 2026.

Get a feel of what it's like to fly with Virgin Atlantic,United Airlines, andLufthansa from London to Idaho by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

How long is the flight from London to Idaho?

What are the most popular routes from London to Idaho?

Can I find deals for flights from London to Idaho that include hotel bookings?

How can I find direct flights from London to Idaho?

Can I find deals for business class flights from London to Idaho?

What is the cheapest month to book a flight from London to Idaho?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for London to Idaho

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Idaho by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to United States

Book a non-stop flight to one of these other cities located in United States.

Search flights from London to Idaho by cabin class

Find flights from London to Idaho, based on your preferred cabin class, be it economy, premium economy, business, or first class.

London and Idaho flights

Browse other London and Idaho flight options. Last updated on 7 August 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

London to Idaho flights

Consider these flights travelling from London to Idaho.

Top 4 airlines flying from London to Idaho

Fly with Cheapflights

How does Cheapflights help users find flights from London to Idaho?

Why should you use Cheapflights to find cheap flight tickets from London to Idaho?

Can Cheapflights find flights from London to Idaho with no change fees?

Can Cheapflights notify me if prices for flights from London to Idaho become cheaper?

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from London to Idaho
Explore the most affordable flight options available from London to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 7 August 2026.

Best flights from London to Idaho
Discover carefully curated flight deals from London to Idaho that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 7 August 2026.

Last-minute flights from London to Idaho
Discover last-minute flight deals from London to Idaho. Data last updated 7 August 2026 and is based on user searches.

One-way flights from London to Idaho
Search for one-way flight options from London to Idaho. Find affordable one-way fares based on user searches. Data last updated 7 August 2026.

London to Idaho flights typically cost between £763 and £1,090 in September.
The cheapest return price found within the last 5 days was £581 on Scandinavian Airlines (11 Sept–26 Sept).