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Cheap flights from London Heathrow Airport to Idaho from £357

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 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BOI
23 Apr — 30 Apr1
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 24 March 2026.

Tue 14/408:45
LHR
-
BOI
2 stops21h 17m
Multiple Airlines
Wed 22/410:45
BOI
-
LHR
1 stop16h 25m
Multiple Airlines
Deal found 22/3£601
Mon 20/410:50
LHR
-
BOI
2 stops19h 12m
Lufthansa
Mon 27/412:04
BOI
-
LHR
1 stop13h 26m
Lufthansa
Deal found 23/3£624
Mon 27/407:25
LHR
-
GEG
2 stops21h 46m
Lufthansa
Mon 4/512:25
GEG
-
LHR
2 stops21h 15m
Lufthansa
Deal found 20/3£628
Wed 9/908:40
LHR
-
GEG
2 stops21h 42m
United Airlines
Sun 13/912:57
GEG
-
LHR
1 stop34h 28m
United Airlines
Deal found 19/3£636
Tue 5/508:45
LHR
-
GEG
2 stops20h 55m
United Airlines
Tue 12/512:25
GEG
-
LHR
1 stop14h 45m
United Airlines
Deal found 21/3£637
Tue 5/508:45
LHR
-
BOI
2 stops19h 32m
United Airlines
Tue 12/506:30
BOI
-
LHR
1 stop22h 55m
United Airlines
Deal found 21/3£637
Mon 20/410:50
LHR
-
BOI
2 stops18h 45m
United Airlines
Mon 27/406:15
BOI
-
LHR
1 stop21h 55m
United Airlines
Deal found 23/3£639
Mon 27/407:25
LHR
-
GEG
2 stops22h 10m
United Airlines
Mon 4/512:25
GEG
-
LHR
1 stop14h 45m
United Airlines
Deal found 20/3£646
Sun 19/416:25
LHR
-
BOI
2 stops37h 10m
United Airlines
Sun 26/417:29
BOI
-
LHR
1 stop33h 11m
United Airlines
Deal found 21/3£647
Thu 7/519:10
LHR
-
GEG
2 stops34h 06m
Lufthansa
Thu 14/512:25
GEG
-
LHR
1 stop14h 45m
Lufthansa
Deal found 23/3£650
Sun 3/511:05
LHR
-
BOI
2 stops42h 45m
United Airlines
Sun 10/518:58
BOI
-
LHR
2 stops28h 57m
United Airlines
Deal found 19/3£650
Sun 3/507:25
LHR
-
GEG
2 stops23h 25m
Lufthansa
Sun 10/512:25
GEG
-
LHR
1 stop35h 00m
Lufthansa
Deal found 19/3£653

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 24 March 2026.

Round-trip from

£601

One-way from

£357

Popular in

December

Cheapest in

January

Average price

£627
14/4-22/4
  • 14/4-22/4
  • 3 total stops
  • 37h 42m total
  • London to Idaho
Search Deals
5/5
  • 5/5
  • 3 total stops
  • 58h 09m total
  • London to Idaho
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£54 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (£31 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
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 24 March 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Idaho that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Wed 9/9

08:40-10:35

2 stops33h 55m

Spokane

Sun 13/9

12:57-06:45

2 stops33h 48m

£636

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Tue 5/5

08:45-21:40

2 stops20h 55m

Spokane

Tue 12/5

12:25-11:10

1 stop14h 45m

£637

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Mon 4/5

10:50-22:35

2 stops18h 45m

Boise Air Term. Gowen Fld

Mon 11/5

10:35-10:40

2 stops17h 05m

£639

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Mon 27/4

07:25-21:35

2 stops22h 10m

Spokane

Mon 4/5

12:25-11:10

1 stop14h 45m

£646

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Sun 19/4

16:25-22:35

2 stops37h 10m

Boise Air Term. Gowen Fld

Sun 26/4

17:29-09:40

1 stop33h 11m

£647

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Thu 7/5

08:45-21:40

2 stops20h 55m

Spokane

Thu 14/5

06:00-10:10

2 stops20h 10m

£666

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Thu 10/9

07:30-11:00

2 stops34h 30m

Boise Air Term. Gowen Fld

Mon 14/9

05:00-09:40

1 stop21h 40m

£669

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Sun 3/5

11:05-22:50

1 stop18h 45m

Boise Air Term. Gowen Fld

Sun 10/5

14:33-12:35

1 stop15h 02m

£723

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Tue 23/6

14:50-22:37

1 stop14h 47m

Boise Air Term. Gowen Fld

Sun 5/7

19:05-07:25

1 stop29h 20m

£782

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sun 3/5

10:55-18:17

1 stop14h 22m

Idaho Falls Fanning Field

Sun 10/5

18:54-10:00

1 stop32h 06m

£807

Flights are sorted by cheapest return flights first.

Deals found on 23/3

Showing 1-10 of 55 resultsSorted by cheapest first
1
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 £512). Flying from London Heathrow Airport to Idaho in February is currently the most expensive (average of £684). 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 24 March 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
685 reviews
Check prices

Boarding

7.7

Food

6.9

Entertainment

7.5

Overall

7.5

Comfort

7.3

Crew

8.1

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
685 reviews
Virgin Atlantic
7.5
Good
685 reviews
Check prices

Boarding

7.7

Food

6.9

Entertainment

7.5

Overall

7.5

Comfort

7.3

Crew

8.1

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
9,471 reviews
Virgin Atlantic
7.5
Good
685 reviews
Check prices

Boarding

7.7

Food

6.9

Entertainment

7.5

Overall

7.5

Comfort

7.3

Crew

8.1

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
7,864 reviews
Virgin Atlantic
7.5
Good
685 reviews
Check prices

Boarding

7.7

Food

6.9

Entertainment

7.5

Overall

7.5

Comfort

7.3

Crew

8.1

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 £807, United Airlines can have you in Idaho from London Heathrow Airport in 14h 22m. Airlines will cover a distance of 4705 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 - Jackson Hole or London Heathrow - Spokane, 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 £684). 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 24 March 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£510Average£674FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£549Average£866FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Virgin AtlanticCheapest£602Average£828FlexibilityNo 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?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Idaho from Heathrow today with Cheapflights!

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

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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