What are the cheapest airlines to fly from Idaho to London one-way?

The cheapest airline one-way is Scandinavian Airlines, with whom users have recently found tickets for as low as £355. However, be on the lookout for offers from Air Canada and KLM, as they are both options that can get you from Idaho to London for a low price.

What are the most popular routes from Idaho to London?

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

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

To save up to 93% on this flight, we recommend booking at least 29 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Idaho to London from £561 1-2 weeks out and tickets from £977 for flights departing within the next 72 hours.

What is the cheapest month to fly from Idaho to London?

Flights from Idaho to London lean towards being more expensive in June. Prices are generally better when you fly from Idaho to London in November, with the cheapest ticket starting at £490.

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

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

How can I find direct flights from Idaho to London?

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

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

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

£312+ Flights from Idaho to London

Cheap flight deals from Idaho to London

Round-trip from	£530
One-way from	£312
Popular in	June
Cheapest in	November
Average price	£657

Scandinavian Airlines
23/9-1/10
4 total stops
43h 04m total
Idaho to London

Search Deals

8/7
3 total stops
25h 20m total
Idaho to London

Search Deals

Highest demand for flights based on searches. 28% potential increase in price (£219 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease (£30 potential savings vs. average return price).

Search Deals

Average for round-trip flights in March 2025

Search Deals

Find flight deals from Idaho to London

Cheapest flights from Idaho to London
Explore the most affordable flight options available from Idaho to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 March 2025.

Tue 23/913:00BOI - LHR

2 stops21h 40mScandinavian Airlines

Wed 1/1006:40LHR - BOI

2 stops21h 24mScandinavian Airlines

Deal found 28/3£530

Tue 9/913:23GEG - LHR

2 stops20h 17mMultiple Airlines

Tue 23/910:20LHR - GEG

2 stops20h 05mMultiple Airlines

Deal found 27/3£540

Tue 22/407:00JAC - LHR

2 stops20h 00mUnited Airlines

Thu 1/509:30LHR - JAC

2 stops42h 47mUnited Airlines

Deal found 28/3£586

Wed 8/1010:39BOI - LHR

1 stop16h 01mUnited Airlines

Wed 15/1014:05LHR - BOI

2 stops30h 25mUnited Airlines

Deal found 28/3£586

Tue 23/913:15GEG - LHR

1 stop12h 25mUnited Airlines

Tue 14/1014:05LHR - GEG

2 stops30h 35mUnited Airlines

Deal found 28/3£586

Sat 4/1017:57IDA - LHR

2 stops19h 43mUnited Airlines

Wed 15/1009:30LHR - IDA

2 stops38h 52mUnited Airlines

Deal found 28/3£590

Sun 4/513:10BOI - LHR

1 stop18h 25mDelta

Tue 20/508:40LHR - BOI

2 stops19h 26mDelta

Deal found 28/3£593

Sun 4/515:30BOI - LHR

1 stop14h 40mKLM

Tue 20/512:25LHR - BOI

1 stop18h 57mKLM

Deal found 28/3£598

Mon 5/515:18GEG - LHR

1 stop13h 32mAmerican Airlines

Thu 15/512:00LHR - GEG

1 stop16h 53mAmerican Airlines

Deal found 28/3£604

Mon 5/507:00GEG - LGW

2 stops28h 10mMultiple Airlines

Sun 11/510:55LGW - GEG

1 stop19h 34mMultiple Airlines

Deal found 27/3£630

Wed 31/1211:35GEG - LGW

2 stops15h 20mIcelandair

Wed 14/111:55LGW - GEG

2 stops17h 04mIcelandair

Deal found 28/3£633

Thu 24/407:05BOI - LHR

1 stop16h 20mFinnair

Thu 1/512:00LHR - BOI

1 stop17h 11mFinnair

Deal found 28/3£635

Best flights from Idaho to London
Discover carefully curated flight deals from Idaho to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 29 March 2025.

Tue 23/913:00BOI - LHR

2 stops21h 40mScandinavian Airlines

Wed 1/1006:40LHR - BOI

2 stops21h 24mScandinavian Airlines

Deal found 28/3£530

Tue 9/913:23GEG - LHR

2 stops20h 17mMultiple Airlines

Tue 23/910:20LHR - GEG

2 stops20h 05mMultiple Airlines

Deal found 27/3£540

Tue 22/414:21JAC - LHR

1 stop12h 19mUnited Airlines

Thu 1/509:30LHR - JAC

2 stops42h 47mUnited Airlines

Deal found 28/3£586

Tue 23/917:00BOI - LHR

1 stop14h 15mDelta

Wed 1/1006:30LHR - BOI

2 stops17h 00mDelta

Deal found 27/3£593

Sun 4/515:30BOI - LHR

1 stop14h 40mKLM

Tue 20/512:25LHR - BOI

1 stop18h 57mKLM

Deal found 28/3£598

Mon 5/515:18GEG - LHR

1 stop13h 32mAmerican Airlines

Thu 15/512:00LHR - GEG

1 stop16h 53mAmerican Airlines

Deal found 28/3£604

Fri 2/517:25BOI - LHR

2 stops33h 35mAir Canada

Thu 15/509:30LHR - BOI

2 stops43h 12mAir Canada

Deal found 27/3£630

Thu 24/407:05BOI - LHR

1 stop16h 20mFinnair

Thu 1/512:00LHR - BOI

1 stop17h 11mFinnair

Deal found 27/3£635

Tue 23/913:15GEG - LCY

2 stops19h 10mLufthansa

Tue 14/1008:45LCY - GEG

2 stops19h 44mLufthansa

Deal found 28/3£636

Tue 23/916:29BOI - LGW

2 stops15h 11mIcelandair

Tue 30/915:40LGW - BOI

2 stops38h 05mIcelandair

Deal found 28/3£643

Mon 14/414:20BOI - LHR

1 stop16h 55mVirgin Atlantic

Wed 23/411:45LHR - BOI

2 stops19h 24mVirgin Atlantic

Deal found 27/3£727

Thu 29/507:14BOI - LHR

1 stop24h 11mIberia

Mon 9/612:00LHR - BOI

1 stop16h 54mIberia

Deal found 27/3£957

Last-minute flights from Idaho to London
Discover last-minute flight deals from Idaho to London. Data last updated 29 March 2025 and is based on user searches.

Fri 4/415:25GEG - LHR

1 stop14h 50mKLM

Sat 12/417:25LHR - GEG

1 stop14h 36mKLM

Deal found 28/3£816

Fri 4/415:25GEG - LHR

2 stops34h 15mUnited Airlines

Sat 12/416:40LHR - GEG

2 stops27h 58mUnited Airlines

Deal found 28/3£831

Fri 4/410:49GEG - LHR

3 stops21h 11mMultiple Airlines

Sat 12/410:20LHR - GEG

2 stops20h 42mMultiple Airlines

Deal found 27/3£3,609

Mon 14/413:10BOI - LHR

3 stops25h 30mScandinavian Airlines

Wed 23/406:40LHR - BOI

2 stops21h 54mScandinavian Airlines

Deal found 28/3£767

Wed 16/413:29GEG - LHR

2 stops22h 51mIcelandair

Thu 24/413:05LHR - GEG

2 stops18h 54mIcelandair

Deal found 28/3£681

Tue 22/407:00JAC - LHR

2 stops20h 00mUnited Airlines

Thu 1/509:30LHR - JAC

2 stops42h 47mUnited Airlines

Deal found 28/3£586

Tue 22/413:23JAC - LHR

1 stop13h 27mKLM

Thu 1/510:55LHR - JAC

1 stop12h 46mKLM

Deal found 28/3£604

Tue 22/414:21JAC - LCY

2 stops19h 04mLufthansa

Thu 1/508:45LCY - JAC

2 stops19h 32mLufthansa

Deal found 28/3£726

Thu 24/411:00BOI - LHR

1 stop13h 25mUnited Airlines

Thu 1/507:25LHR - BOI

2 stops22h 27mUnited Airlines

Deal found 28/3£631

Thu 24/407:05BOI - LHR

1 stop16h 20mFinnair

Thu 1/512:00LHR - BOI

1 stop17h 11mFinnair

Deal found 28/3£635

Thu 24/413:00BOI - LGW

2 stops18h 40mIcelandair

Thu 1/513:00LGW - BOI

2 stops16h 39mIcelandair

Deal found 28/3£726

Sun 27/405:14GEG - LHR

1 stop23h 06mUnited Airlines

Sun 4/514:05LHR - GEG

2 stops32h 36mUnited Airlines

Deal found 28/3£625

One-way flights from Idaho to London
Search for one-way flight options from Idaho to London. Find affordable one-way fares based on user searches. Data last updated 29 March 2025.

Tue 8/713:00BOI - LHR

3 stops25h 20mMultiple Airlines

Deal found 27/3£312

Mon 26/509:16GEG - LHR

2 stops24h 24mScandinavian Airlines

Deal found 28/3£355

Tue 8/707:00BOI - LHR

2 stops16h 30mAir Canada

Deal found 27/3£426

Tue 8/715:25BOI - LHR

1 stop14h 45mKLM

Deal found 27/3£429

Mon 12/505:29GEG - LHR

2 stops18h 11mUnited Airlines

Deal found 28/3£468

Fri 12/913:40GEG - LHR

1 stop13h 15mAmerican Airlines

Deal found 28/3£476

Fri 13/605:45BOI - LHR

2 stops23h 20mWestJet

Deal found 27/3£657

Tue 1/709:05GEG - LGW

2 stops16h 55mDelta

Deal found 28/3£659

Tue 1/705:45GEG - LHR

2 stops17h 00mDelta

Deal found 28/3£659

Tue 1/706:50GEG - LCY

2 stops18h 00mDelta

Deal found 28/3£688

Fri 30/511:40JAC - LHR

1 stop15h 10mKLM

Deal found 28/3£694

Fri 30/513:04JAC - LCY

2 stops15h 36mKLM

Deal found 28/3£723

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 23/9

13:00-17:40

2 stops21h 40m

London Heathrow

Wed 1/10

06:40-21:04

2 stops21h 24m

£530

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Tue 9/9

13:23-17:40

2 stops20h 17m

London Heathrow

Tue 23/9

10:20-22:25

2 stops20h 05m

£540

JacksonLondon

JAC - LHR

JACLHR

Jackson Hole

Tue 22/4

14:21-09:40

1 stop12h 19m

London Heathrow

Thu 1/5

09:30-21:17

2 stops42h 47m

£586

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Tue 23/9

13:15-09:40

1 stop12h 25m

London Heathrow

Tue 14/10

14:05-12:40

2 stops30h 35m

£586

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 23/9

17:00-14:15

1 stop14h 15m

London Heathrow

Wed 1/10

06:30-16:30

2 stops17h 00m

£593

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Sun 4/5

15:30-13:10

1 stop14h 40m

London Heathrow

Tue 20/5

12:25-00:22

1 stop18h 57m

£598

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Mon 5/5

15:18-12:50

1 stop13h 32m

London Heathrow

Thu 15/5

12:00-20:53

1 stop16h 53m

£604

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Fri 2/5

17:25-10:00

2 stops33h 35m

London Heathrow

Thu 15/5

09:30-21:42

2 stops43h 12m

£630

SpokaneLondon

GEG - LGW

GEGLGW

Spokane

Mon 5/5

07:00-19:10

2 stops28h 10m

London Gatwick

Sun 11/5

10:55-22:29

1 stop19h 34m

£630

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Fri 2/5

12:05-08:20

1 stop13h 15m

London Heathrow

Thu 15/5

09:00-22:52

2 stops20h 52m

£631

Flights are sorted by cheapest return flights first.

Deals found on 27/3

Showing 1-10 of 47 results

...

Best time to book a flight from Idaho to London

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

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 Idaho to London

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

Currently, January is the cheapest month in which you can book a flight from Idaho to London (average of £112). Flying from Idaho to London in August is currently the most expensive (average of £164). 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.

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Idaho to London as you normally would.

Rainfall in London by month

In terms of precipitation, rainfall in London ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London when rainfall is around 40.0 mm.

Temperature in London by month

If weather is an important factor for your trip to London, 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 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

Reviews of airlines servicing London

Read through reviews of airlines operating flights from Idaho to London, such as Delta, Alaska Airlines and KLM. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very Good

7,897 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta

8.0

Very Good

7,897 reviews

Delta

8.0

Very Good

7,897 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Alaska Airlines

8.0

Very Good

9,797 reviews

Delta

8.0

Very Good

7,897 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM

7.8

Good

1,321 reviews

Delta

8.0

Very Good

7,897 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Finnair

7.6

Good

1,267 reviews

Delta

8.0

Very Good

7,897 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Air France

7.4

Good

1,424 reviews

Delta

8.0

Very Good

7,897 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

What are the cheapest airlines to fly from Idaho to London one-way?
The cheapest airline one-way is Scandinavian Airlines, with whom users have recently found tickets for as low as £355. However, be on the lookout for offers from Air Canada and KLM, as they are both options that can get you from Idaho to London for a low price.
What are the most popular routes from Idaho to London?
While some choose either Boise Air Term. Gowen Fld - London Heathrow or Spokane - London Gatwick, Spokane - London Heathrow is the most popular route from Idaho to London.
Can I find deals for flights from Idaho to London that include hotel bookings?
Yes. In addition to deals on Idaho to London flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Idaho to London?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Idaho to London.
Can I find deals for business class flights from Idaho to London?
Yes. Cheapflights offers flight deals from Idaho to London 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 Idaho to London?
Currently, January is the cheapest month in which you can book a flight from Idaho to London (average of £112). Flying from Idaho to London in August is currently the most expensive (average of £164). 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

Hounslow

Deal

Milton Keynes

Gatwick

Croydon

Luton

Slough

Eastbourne

Wembley

Hayes

Ilford

Crawley

Southend-on-Sea

Winchester

Maidstone

Ipswich

Watford

Southall

Dartford

Folkestone

Browse thousands of different options on Cheapflights for your next trip

Top airline flying from Idaho to London

Airline	Cheapest	Average	Flexibility	On-time
Virgin Atlantic	Cheapest£469	Average£927	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights

Fly with Cheapflights

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

When you search for this flight from Idaho to London, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

Millions of users choose and trust Cheapflights to book the best flight deals from Idaho to London for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from Idaho to London flexibly with Cheapflights today.

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

Of course! You can now track prices for flights from Idaho to London 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.

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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 Idaho to London from £312

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 8/7. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Idaho to London

Keep the following information in mind while searching for Idaho to London flight deals. Data was last updated 29 March 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Idaho to London

Cheapest flights from Idaho to LondonExplore the most affordable flight options available from Idaho to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 March 2025.

Explore the most affordable flight options available from Idaho to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 March 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Idaho to London

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

Cheapflights Insights

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

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

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

Find hourly flight availability from Idaho to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 29 March 2025.

Rainfall in London by month

Plan your trip to London by taking into account the average rainfall totals by month.

Temperature in London by month

Plan your trip to London by taking into account the average temperature totals by month.

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. 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 London. Reviews last updated 29 March 2025.

Read through reviews of airlines operating flights from Idaho to London, such as Delta, Alaska Airlines and KLM. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Idaho to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What are the cheapest airlines to fly from Idaho to London one-way?

What are the most popular routes from Idaho to London?

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

How can I find direct flights from Idaho to London?

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

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

Travelling to a place near 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 Idaho to London

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

Top airline flying from Idaho to London

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

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

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

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

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Cheapest flights from Idaho to London
Explore the most affordable flight options available from Idaho to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 March 2025.