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Cheap flights from London Heathrow Airport to Idaho from £448

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 4/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BOI
16 Dec — 23 Dec1
1 adult

Find flights from Heathrow to Idaho within your budget

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 886,240 searches. Data last updated 11 December 2024.

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Depart

Return

Price

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Tue 21/1

15:00-20:53

2 stops37h 53m

Spokane

Tue 28/1

07:02-12:00

1 stop20h 58m

£568

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Tue 21/1

09:10-20:53

2 stops19h 43m

Spokane

Tue 28/1

07:02-13:30

2 stops22h 28m

£571

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Wed 15/1

11:35-20:53

1 stop17h 18m

Spokane

Sun 19/1

16:20-07:25

1 stop31h 05m

£586

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 28/2

13:35-12:00

1 stop29h 25m

Boise Air Term. Gowen Fld

Sun 9/3

18:56-07:25

1 stop30h 29m

£588

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Sat 25/1

07:40-18:02

2 stops17h 22m

Boise Air Term. Gowen Fld

Sat 1/2

08:25-09:40

1 stop18h 15m

£633

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Thu 23/1

06:20-18:17

2 stops18h 57m

Idaho Falls Fanning Field

Thu 30/1

06:00-07:05

2 stops18h 05m

£727

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Tue 31/12

09:10-23:55

1 stop21h 45m

Boise Air Term. Gowen Fld

Wed 14/5

17:00-13:30

1 stop13h 30m

£738

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Thu 23/1

14:30-22:17

1 stop14h 47m

Idaho Falls Fanning Field

Thu 30/1

12:55-09:40

1 stop13h 45m

£745

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Sun 29/12

10:45-16:40

1 stop13h 55m

Spokane

Wed 8/1

13:15-06:25

2 stops33h 10m

£765

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Sun 29/12

10:45-23:58

1 stop21h 13m

Spokane

Wed 8/1

19:24-11:10

1 stop31h 46m

£768

Flights are sorted by cheapest return flights first.

Deals found on 10/12

Showing 1-10 of 37 results
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Cheap flight deals from Heathrow to Idaho

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Idaho (USID). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 11 December 2024.

Round-trip from

£568

One-way from

£448
United Airlines
  • United Airlines
  • 21/1-28/1
  • 3 total stops
  • 58h 51m total
  • London to Idaho
Search Deals
4/6
  • 4/6
  • 3 total stops
  • 33h 50m total
  • London to Idaho
Search Deals

Find flight deals from Heathrow to Idaho

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 11 December 2024.

Tue 31/1211:35LHR - BOI
1 stop29h 26mUnited Airlines
Wed 14/511:10BOI - LHR
1 stop20h 00mUnited Airlines
Deal found 10/12£734
Tue 31/1209:10LHR - BOI
1 stop21h 45mDelta
Wed 14/517:00BOI - LHR
1 stop13h 30mDelta
Deal found 10/12£738
Sun 29/1210:45LHR - GEG
1 stop13h 55mVirgin Atlantic
Wed 8/113:15GEG - LHR
2 stops33h 10mVirgin Atlantic
Deal found 10/12£765
Sun 29/1210:45LHR - GEG
1 stop21h 13mDelta
Wed 8/119:24GEG - LHR
1 stop31h 46mDelta
Deal found 10/12£768
Sun 29/1210:45LHR - IDA
1 stop18h 41mVirgin Atlantic
Sat 11/113:10IDA - LHR
1 stop13h 50mVirgin Atlantic
Deal found 10/12£772
Sun 29/1210:45LHR - IDA
1 stop14h 30mKLM
Sat 11/113:10IDA - LHR
2 stops15h 00mKLM
Deal found 10/12£778
Tue 31/1209:10LHR - BOI
2 stops21h 00mVirgin Atlantic
Wed 14/513:15BOI - LHR
2 stops17h 15mVirgin Atlantic
Deal found 10/12£807
Sun 29/1209:30LHR - GEG
2 stops19h 15mFinnair
Tue 7/115:21GEG - LHR
2 stops56h 29mFinnair
Deal found 10/12£821
Sun 29/1215:00LHR - IDA
2 stops29h 06mLufthansa
Sat 11/114:28IDA - LHR
2 stops37h 47mLufthansa
Deal found 10/12£868
Mon 30/1211:35LHR - GEG
1 stop17h 29mUnited Airlines
Wed 8/116:20GEG - LHR
2 stops20h 15mUnited Airlines
Deal found 10/12£877
Wed 25/1210:45LHR - SUN
1 stop18h 38mDelta
Sun 29/1218:40SUN - LHR
1 stop32h 20mDelta
Deal found 10/12£927
Sun 29/1215:00LHR - GEG
2 stops38h 04mLufthansa
Tue 7/105:10GEG - LHR
1 stop20h 30mLufthansa
Deal found 10/12£945

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.

Travel insights for flights from Heathrow to Idaho

Get recent, data-driven insights about flights from Heathrow to Idaho including ideal travel times, pricing trends, and more.

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

Currently, October is the cheapest month in which you can book a flight from London Heathrow Airport to Idaho (average of £754). Flying from London Heathrow Airport to Idaho in August is currently the most expensive (average of £1,152). 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 11 December 2024.

When flying from London Heathrow Airport 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.

Rainfall in Idaho by month

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

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.

Temperature in Idaho by month

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

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).

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 11 December 2024.
See what other customers who have flown with Lufthansa, United Airlines and Delta from London to Idaho have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
8,650 reviews
Check prices

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.6

Food

7.3

Entertainment

7.9

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very Good
8,650 reviews
Delta
8.0
Very Good
8,650 reviews
Check prices

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.6

Food

7.3

Entertainment

7.9

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Air New Zealand
8.0
Very Good
512 reviews
Delta
8.0
Very Good
8,650 reviews
Check prices

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.6

Food

7.3

Entertainment

7.9

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM
7.8
Good
1,348 reviews
Delta
8.0
Very Good
8,650 reviews
Check prices

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.6

Food

7.3

Entertainment

7.9

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Finnair
7.7
Good
1,288 reviews
Delta
8.0
Very Good
8,650 reviews
Check prices

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.6

Food

7.3

Entertainment

7.9

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Virgin Atlantic
7.5
Good
667 reviews
Delta
8.0
Very Good
8,650 reviews
Check prices

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.6

Food

7.3

Entertainment

7.9

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.

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

    For one-way options, check prices for Icelandair. According to our data, you can fly for as low as £590. Users have also found prices from £638 and £644 on Lufthansa and Air New Zealand, respectively.

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

    While some choose either London Heathrow - Spokane or London Heathrow - Idaho Falls Fanning Field, 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.