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Cheap flights from London Heathrow Airport to Idaho from £326

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 4/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BOI
11 Feb — 18 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to Idaho

Keep the following information in mind while searching for Heathrow to Idaho flight deals. Data was last updated 12 January 2026.

Round-trip from

£502

One-way from

£326

Popular in

December

Cheapest in

January

Average price

£577
Iberia
  • Iberia
  • 10/3-17/3
  • 3 total stops
  • 50h 57m total
  • London to Idaho
Search Deals
4/5
  • 4/5
  • 2 total stops
  • 32h 37m total
  • London to Idaho
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£51 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 January 2026
Search Deals

Find 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 12 January 2026.

Tue 10/316:15
LHR
-
GEG
2 stops35h 57m
Iberia
Tue 17/312:25
GEG
-
LHR
1 stop15h 00m
Iberia
Deal found 10/1£502
Mon 9/206:05
LHR
-
GEG
2 stops20h 44m
Iberia
Mon 16/212:25
GEG
-
LHR
1 stop14h 00m
Iberia
Deal found 12/1£517
Tue 24/209:00
LHR
-
GEG
2 stops20h 07m
United Airlines
Tue 3/307:00
GEG
-
LHR
1 stop16h 55m
United Airlines
Deal found 10/1£520
Thu 5/206:35
LHR
-
GEG
2 stops20h 41m
United Airlines
Sun 8/212:24
GEG
-
LHR
1 stop15h 36m
United Airlines
Deal found 11/1£523
Sat 7/213:30
LHR
-
GEG
2 stops29h 14m
United Airlines
Sat 14/212:38
GEG
-
LHR
1 stop34h 47m
United Airlines
Deal found 10/1£525
Mon 4/508:40
LHR
-
GEG
2 stops34h 29m
United Airlines
Sun 10/506:00
GEG
-
LHR
2 stops22h 20m
United Airlines
Deal found 12/1£531
Thu 3/908:40
LHR
-
GEG
2 stops22h 58m
United Airlines
Sun 13/912:30
GEG
-
LHR
1 stop17h 40m
United Airlines
Deal found 10/1£532
Sat 21/211:05
LHR
-
GEG
2 stops43h 55m
United Airlines
Sat 28/207:00
GEG
-
LHR
1 stop14h 55m
United Airlines
Deal found 10/1£535
Tue 24/211:05
LHR
-
GEG
1 stop16h 52m
Virgin Atlantic
Tue 3/306:45
GEG
-
LHR
1 stop16h 20m
Virgin Atlantic
Deal found 10/1£537
Wed 4/309:30
LHR
-
BOI
2 stops19h 02m
Lufthansa
Tue 17/314:40
BOI
-
LHR
1 stop13h 00m
Lufthansa
Deal found 11/1£537
Wed 25/209:30
LHR
-
BOI
2 stops19h 02m
United Airlines
Wed 4/308:41
BOI
-
LHR
1 stop20h 19m
United Airlines
Deal found 11/1£557
Thu 26/209:30
LHR
-
BOI
2 stops19h 02m
Lufthansa
Thu 5/314:40
BOI
-
LHR
1 stop12h 00m
Lufthansa
Deal found 12/1£566

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 12 January 2026.
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

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Tue 10/3

16:15-21:12

2 stops35h 57m

Spokane

Tue 17/3

12:25-10:25

1 stop15h 00m

£502

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Mon 9/2

06:05-18:49

2 stops20h 44m

Spokane

Mon 16/2

15:10-22:10

2 stops23h 00m

£517

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Tue 24/2

09:00-21:07

2 stops20h 07m

Spokane

Tue 3/3

07:00-07:55

1 stop16h 55m

£520

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Thu 5/2

06:35-19:16

2 stops20h 41m

Spokane

Sun 8/2

11:25-05:55

1 stop34h 30m

£523

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Tue 10/3

06:35-21:18

2 stops21h 43m

Spokane

Tue 17/3

05:00-09:40

1 stop21h 40m

£523

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Wed 25/2

09:30-21:17

2 stops19h 47m

Spokane

Wed 4/3

12:38-13:30

2 stops16h 52m

£524

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Sat 7/2

13:30-10:44

2 stops29h 14m

Spokane

Sat 14/2

12:38-07:25

1 stop34h 47m

£525

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Wed 4/3

06:30-18:47

2 stops19h 17m

Boise Air Term. Gowen Fld

Tue 17/3

08:39-09:40

2 stops19h 01m

£557

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Wed 25/2

07:30-17:45

2 stops17h 15m

Boise Air Term. Gowen Fld

Wed 4/3

08:41-09:40

2 stops17h 59m

£557

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Wed 4/3

10:25-18:47

1 stop15h 22m

Boise Air Term. Gowen Fld

Tue 17/3

07:47-05:55

1 stop16h 08m

£559

Flights are sorted by cheapest return flights first.

Deals found on 12/1

Showing 1-10 of 51 results
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2
3
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6

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 £507). Flying from London Heathrow Airport to Idaho in February is currently the most expensive (average of £710). 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 Heathrow Airport to Idaho?

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 12 January 2026.
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
678 reviews
Check prices

Boarding

7.7

Overall

7.5

Crew

8.2

Food

6.9

Comfort

7.3

Entertainment

7.6

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
678 reviews
Virgin Atlantic
7.5
Good
678 reviews
Check prices

Boarding

7.7

Overall

7.5

Crew

8.2

Food

6.9

Comfort

7.3

Entertainment

7.6

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
9,149 reviews
Virgin Atlantic
7.5
Good
678 reviews
Check prices

Boarding

7.7

Overall

7.5

Crew

8.2

Food

6.9

Comfort

7.3

Entertainment

7.6

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
7,709 reviews
Virgin Atlantic
7.5
Good
678 reviews
Check prices

Boarding

7.7

Overall

7.5

Crew

8.2

Food

6.9

Comfort

7.3

Entertainment

7.6

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 £559, Iberia can have you in Idaho from London Heathrow Airport in 15h 22m. Airlines will cover a distance of 4829 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 £507). Flying from London Heathrow Airport to Idaho in February is currently the most expensive (average of £710). 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 12 January 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£534Average£658FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£537Average£834FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Virgin AtlanticCheapest£598Average£863FlexibilityNo 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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