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$536+ Cheap flights from Heathrow (LHR) to Idaho

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 5/16. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BOI
févr. 25 — mars 41
mar. 2/25
mar. 3/4
1 adult, Economy
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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 février 20, 2025.

Round-trip from

$702
(United Airlines)

One-way from

$536
(Kiwi.com)

Popular in

August

Cheapest in

November

Average price

$803
From London Heathrow to Idaho
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One-way flight from London Heathrow to Idaho
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Highest demand for flights based on searches. 16% potential increase in price ($187 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($38 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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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 février 20, 2025.

This United Airlines deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 5/57:25 amLHR - GEG
2 stops39h 16mUnited Airlines
jeu. 5/153:25 pmGEG - LHR
2 stops35h 45mUnited Airlines
Deal found 2/20$702
This TravelUp deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 3/48:25 pmLHR - GEG
2 stops26h 20mKLM
lun. 3/312:00 pmGEG - LHR
1 stop15h 10mKLM
Deal found 2/19$713
This The Travel House deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 2/2810:40 amLHR - BOI
1 stop18h 10mIberia
dim. 3/96:58 pmBOI - LHR
1 stop15h 02mIberia
Deal found 2/20$717
This TravelUp deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 5/512:20 pmLHR - GEG
1 stop19h 18mMultiple Airlines
jeu. 5/153:25 pmGEG - LHR
1 stop14h 45mMultiple Airlines
Deal found 2/20$722
This EaseMyTrip deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure EaseMyTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 9/77:30 pmLHR - GEG
2 stops32h 59mLufthansa
dim. 9/282:05 pmGEG - LHR
1 stop33h 20mLufthansa
Deal found 2/19$723
This The Travel House deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 3/48:20 amLHR - GEG
1 stop18h 32mFinnair
lun. 3/313:27 pmGEG - LHR
1 stop13h 23mFinnair
Deal found 2/19$729
This United Airlines deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 4/249:30 amLHR - BOI
2 stops19h 13mUnited Airlines
dim. 4/277:00 pmBOI - LHR
1 stop29h 25mUnited Airlines
Deal found 2/20$752
This TravelUp deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 4/2411:25 amLHR - BOI
1 stop13h 27mMultiple Airlines
dim. 4/2712:06 pmBOI - LHR
1 stop35h 14mMultiple Airlines
Deal found 2/20$759
This KLM deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 2/286:30 amLHR - BOI
2 stops19h 20mKLM
dim. 3/910:50 amBOI - LHR
1 stop19h 50mKLM
Deal found 2/20$788
This TravelUp deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 3/410:00 amLHR - GEG
2 stops38h 19mVirgin Atlantic
lun. 3/312:00 pmGEG - LHR
2 stops37h 10mVirgin Atlantic
Deal found 2/19$793
This EaseMyTrip deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure EaseMyTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 2/287:30 pmLHR - BOI
2 stops33h 51mScandinavian Airlines
dim. 3/97:15 amBOI - LHR
2 stops26h 45mScandinavian Airlines
Deal found 2/20$823
This The Travel House deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 9/193:10 pmLHR - JAC
1 stop25h 55mFinnair
sam. 9/272:50 pmJAC - LHR
1 stop18h 15mFinnair
Deal found 2/20$849

Find flights from Heathrow to Idaho within your budget

Customize 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 2,558,603 searches. Data last updated février 20, 2025.

Fly from

Heathrow

Fly to

Idaho

Route

Depart

Return

Price

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

lun. 5/5

7:25 am-2:41 pm

2 stops39h 16m

Spokane

jeu. 5/15

3:25 pm-11:10 am

2 stops35h 45m

$702

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

mar. 3/4

8:25 pm-2:45 pm

2 stops26h 20m

Spokane

lun. 3/31

2:00 pm-1:10 pm

1 stop15h 10m

$713

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

lun. 5/5

12:20 pm-11:38 pm

1 stop19h 18m

Spokane

jeu. 5/15

3:25 pm-2:10 pm

1 stop14h 45m

$722

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

mar. 3/4

8:20 am-6:52 pm

1 stop18h 32m

Spokane

lun. 3/31

3:27 pm-12:50 pm

1 stop13h 23m

$729

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

jeu. 4/24

9:30 am-9:43 pm

2 stops19h 13m

Boise Air Term. Gowen Fld

dim. 4/27

7:00 pm-7:25 am

1 stop29h 25m

$752

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

jeu. 4/24

11:25 am-5:52 pm

1 stop13h 27m

Boise Air Term. Gowen Fld

dim. 4/27

12:06 pm-6:20 am

1 stop35h 14m

$759

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

mar. 3/4

10:00 am-4:19 pm

2 stops38h 19m

Spokane

lun. 3/31

2:00 pm-11:10 am

2 stops37h 10m

$793

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

jeu. 3/6

6:30 am-6:50 pm

2 stops19h 20m

Boise Air Term. Gowen Fld

lun. 3/10

11:15 am-10:00 am

1 stop16h 45m

$798

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

jeu. 3/6

6:30 am-10:11 pm

2 stops22h 41m

Boise Air Term. Gowen Fld

lun. 3/10

10:50 am-11:10 am

2 stops18h 20m

$855

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

lun. 7/7

4:15 pm-11:09 pm

1 stop14h 54m

Spokane

mar. 7/22

1:37 pm-12:20 pm

1 stop14h 43m

$873

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 43 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 round-trip 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 $314). Flying from London Heathrow Airport to Idaho in June is currently the most expensive (average of $436). 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.

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 0.2 - 1.6 inches per month. December is typically the wettest month, when rainfall can reach 1.6 in. August is typically the driest time to visit Idaho when rainfall is around 0.2 in.

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 75.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 30.2 F).

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 février 20, 2025.
Read reviews from past customers who have flown Delta, KLM and Finnair from London to Idaho. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,219 reviews

Food

7.3

Boarding

8.2

Comfort

8.0

Overall

8.0

Crew

8.5

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

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

Delta
8.0
Very good
8,219 reviews
Delta
8.0
Very good
8,219 reviews

Food

7.3

Boarding

8.2

Comfort

8.0

Overall

8.0

Crew

8.5

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

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

KLM
7.8
Good
1,333 reviews
Delta
8.0
Very good
8,219 reviews

Food

7.3

Boarding

8.2

Comfort

8.0

Overall

8.0

Crew

8.5

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

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

Finnair
7.6
Good
1,274 reviews
Delta
8.0
Very good
8,219 reviews

Food

7.3

Boarding

8.2

Comfort

8.0

Overall

8.0

Crew

8.5

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

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

Virgin Atlantic
7.5
Good
654 reviews
Delta
8.0
Very good
8,219 reviews

Food

7.3

Boarding

8.2

Comfort

8.0

Overall

8.0

Crew

8.5

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

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

Air France
7.4
Good
1,449 reviews
Delta
8.0
Very good
8,219 reviews

Food

7.3

Boarding

8.2

Comfort

8.0

Overall

8.0

Crew

8.5

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

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?

    $590 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on Lufthansa and Icelandair, with prices starting from $796 and $971, respectively.

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

    While some choose either London Heathrow - Boise Air Term. Gowen Fld or London Heathrow - Jackson Hole, London Heathrow - Spokane 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 vacation 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, October is the cheapest month in which you can book a flight from London Heathrow Airport to Idaho (average of $314). Flying from London Heathrow Airport to Idaho in June is currently the most expensive (average of $436). 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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