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Cheap flights from London Heathrow Airport to Idaho from £368

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 15/1. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BOI
15 Jan — 22 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to Idaho

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Idaho
Explore the most affordable flight options available from Heathrow to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 December 2025.

Tue 30/1214:45LHR - BOI
1 stop14h 16mVirgin Atlantic
Wed 14/105:30BOI - LHR
2 stops17h 50mVirgin Atlantic
Deal found 14/12£745
Mon 29/1206:30LHR - BOI
2 stops22h 31mDelta
Wed 14/105:30BOI - LHR
2 stops17h 50mDelta
Deal found 14/12£793
Tue 30/1206:30LHR - BOI
2 stops22h 01mLufthansa
Wed 14/112:19BOI - LHR
2 stops20h 31mLufthansa
Deal found 14/12£808
Tue 16/1210:45LHR - GEG
1 stop21h 14mVirgin Atlantic
Wed 4/206:30GEG - LHR
1 stop16h 35mVirgin Atlantic
Deal found 14/12£1,026
Tue 16/1208:40LHR - GEG
2 stops19h 30mKLM
Wed 4/205:15GEG - LHR
1 stop20h 45mKLM
Deal found 14/12£1,047
Tue 23/1211:45LHR - SUN
2 stops41h 35mDelta
Thu 8/112:55SUN - LHR
2 stops15h 45mDelta
Deal found 15/12£1,083
Wed 24/1211:05LHR - SUN
2 stops18h 15mDelta
Thu 8/107:25SUN - LHR
2 stops16h 40mDelta
Deal found 15/12£1,096
Wed 24/1206:20LHR - SUN
2 stops23h 00mDelta
Fri 9/107:25SUN - LHR
2 stops16h 40mDelta
Deal found 15/12£1,117
Thu 25/1220:25LHR - SUN
2 stops28h 37mKLM
Thu 8/107:25SUN - LHR
2 stops17h 25mKLM
Deal found 15/12£1,125
Wed 24/1206:20LHR - SUN
2 stops23h 00mMultiple Airlines
Sat 10/112:55SUN - LHR
1 stop14h 05mMultiple Airlines
Deal found 15/12£1,125
Wed 24/1215:45LHR - SUN
1 stop27h 54mMultiple Airlines
Fri 9/113:16SUN - LHR
1 stop15h 19mMultiple Airlines
Deal found 15/12£1,128
Mon 22/1212:15LHR - BOI
2 stops18h 22mMultiple Airlines
Sat 17/111:35BOI - LHR
2 stops16h 15mMultiple Airlines
Deal found 14/12£1,133

Find flight deals from Heathrow to Idaho

Keep the following information in mind while searching for Heathrow to Idaho flight deals. Data was last updated 16 December 2025.

Round-trip from

£480

One-way from

£368

Popular in

December

Cheapest in

September

Average price

£1,113
United Airlines
  • United Airlines
  • 7/2-14/2
  • 2 total stops
  • 29h 28m total
  • London to Idaho
Search Deals
15/1
  • 15/1
  • 3 total stops
  • 50h 35m total
  • London to Idaho
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£55 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£26 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow to Idaho that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 16 December 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Idaho that are best for you.

Fly from

Heathrow

Fly to

Idaho

Route

Depart

Return

Price

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Thu 29/1

12:15-23:59

2 stops18h 44m

Boise Air Term. Gowen Fld

Thu 5/2

11:35-19:30

2 stops24h 55m

£491

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Tue 10/3

06:35-21:03

2 stops21h 28m

Spokane

Tue 17/3

06:00-06:40

2 stops17h 40m

£558

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Wed 18/3

06:35-13:32

2 stops36h 57m

Boise Air Term. Gowen Fld

Tue 19/5

08:20-14:10

1 stop22h 50m

£558

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Thu 29/1

06:35-19:16

2 stops20h 41m

Spokane

Thu 5/2

06:53-12:00

1 stop21h 07m

£588

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Thu 15/1

11:10-10:44

2 stops31h 34m

Spokane

Mon 19/1

06:53-12:00

1 stop21h 07m

£588

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 27/2

11:10-23:48

2 stops19h 38m

Boise Air Term. Gowen Fld

Mon 9/3

05:00-09:40

1 stop22h 40m

£588

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 20/2

06:35-10:12

2 stops34h 37m

Boise Air Term. Gowen Fld

Mon 2/3

10:25-09:40

1 stop16h 15m

£588

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Thu 22/1

06:35-18:07

2 stops18h 32m

Boise Air Term. Gowen Fld

Mon 26/1

06:10-09:40

1 stop20h 30m

£588

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Thu 29/1

06:30-22:57

2 stops23h 27m

Boise Air Term. Gowen Fld

Thu 5/2

14:20-12:00

1 stop14h 40m

£589

LondonHailey

LHR - SUN

LHRSUN

London Heathrow

Fri 6/2

11:35-21:29

1 stop16h 54m

Hailey Sun Valley-Friedman

Sun 15/2

14:32-09:40

1 stop12h 08m

£676

Flights are sorted by cheapest return flights first.

Deals found on 15/12

Showing 1-10 of 40 results
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Best time to book a flight from Heathrow to Idaho

Have a flexible travel schedule? Discover the best time to fly to Idaho from Heathrow 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 London Heathrow Airport to Idaho

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

Currently, March is the cheapest month in which you can book a flight from London Heathrow Airport to Idaho (average of £512). Flying from London Heathrow Airport to Idaho in February is currently the most expensive (average of £714). 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 LHR to ID?

Find hourly flight availability from Heathrow to Idaho. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 16 December 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 12% on flights from London Heathrow Airport to Idaho by exploring options for tickets in the afternoon.

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 16 December 2025.
See what other customers who have flown with Virgin Atlantic, United Airlines, andLufthansa from London Heathrow Airport to Idaho have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Virgin Atlantic
7.5
Good
675 reviews
Check prices

Overall

7.5

Boarding

7.7

Food

6.9

Entertainment

7.5

Crew

8.2

Comfort

7.3

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Virgin Atlantic
7.5
Good
675 reviews
Virgin Atlantic
7.5
Good
675 reviews
Check prices

Overall

7.5

Boarding

7.7

Food

6.9

Entertainment

7.5

Crew

8.2

Comfort

7.3

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
United Airlines
7.4
Good
9,094 reviews
Virgin Atlantic
7.5
Good
675 reviews
Check prices

Overall

7.5

Boarding

7.7

Food

6.9

Entertainment

7.5

Crew

8.2

Comfort

7.3

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Lufthansa
6.8
Okay
7,631 reviews
Virgin Atlantic
7.5
Good
675 reviews
Check prices

Overall

7.5

Boarding

7.7

Food

6.9

Entertainment

7.5

Crew

8.2

Comfort

7.3

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!

Related info for your journey

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

  • How long is the flight from London Heathrow Airport to Idaho?

    For as low as £830, United Airlines can have you in Idaho from London Heathrow Airport in 15h 21m. Airlines will cover a distance of 4658 mi. Both multi-stop and direct flights can be found to your destination and back.

  • What are the most popular routes from London Heathrow Airport to Idaho?

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

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

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

  • How can I find direct flights from Heathrow to Idaho?

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

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

    Yes. Cheapflights offers flight deals from Heathrow 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 Heathrow Airport to Idaho?

    Currently, March is the cheapest month in which you can book a flight from London Heathrow Airport to Idaho (average of £512). Flying from London Heathrow Airport to Idaho in February is currently the most expensive (average of £714). 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

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Alternative routes for Heathrow to Idaho

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Heathrow to Idaho

Discover the top 3 airlines that operate flights from Heathrow to Idaho. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 16 December 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£537Average£657FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£540Average£850FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Virgin AtlanticCheapest£602Average£847FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights

Fly with Cheapflights

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

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It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Heathrow to Idaho.

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

Certainly. Search results for flights to Idaho from Heathrow shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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