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$499+ Cheap flights from Idaho to Heathrow (LHR)

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 6/3. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — LHR
feb. 25 — mar. 41
mar. 2/25
mar. 3/4
1 adult, Economy
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Cheap flight deals from Idaho to Heathrow

Keep the following information in mind while searching for Idaho to Heathrow flight deals. Data was last updated febrero 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$666
(Gotogate)

One-way from

$499
(Kiwi.com)

Popular in

June

Cheapest in

April

Average price

$787
Provider with most accurate pricing for Boise Air Term. Gowen Fld-London (LON) flight deals.
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Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-London (LON) flights.
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From Idaho to London Heathrow
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One-way flight from Idaho to London Heathrow
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Highest demand for flights based on searches. 28% potential increase in price ($370 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($50 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 Idaho to Heathrow

Cheapest flights from Idaho to Heathrow
Explore the most affordable flight options available from Idaho to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on febrero 20, 2025.

This Gotogate 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/1512:06 pmBOI - LHR
2 stops35h 29mAir Canada
mar. 4/222:05 pmLHR - BOI
2 stops29h 05mAir Canada
Deal found 2/20$666
This Netflights 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 Netflights is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/152:10 pmBOI - LHR
1 stop14h 15mVirgin Atlantic
mar. 4/2212:25 pmLHR - BOI
1 stop18h 34mVirgin Atlantic
Deal found 2/20$674
This KLM 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 3/91:00 pmIDA - LHR
2 stops17h 40mKLM
mar. 3/255:50 pmLHR - IDA
2 stops30h 23mKLM
Deal found 2/19$676
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 3/1911:10 amBOI - LHR
1 stop18h 50mUnited Airlines
mié. 3/263:00 pmLHR - BOI
2 stops36h 29mUnited Airlines
Deal found 2/19$677
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 4/24:08 pmGEG - LHR
1 stop12h 12mUnited Airlines
mié. 4/97:25 amLHR - GEG
2 stops22h 01mUnited Airlines
Deal found 2/19$688
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 3/92:35 pmIDA - LHR
1 stop13h 05mUnited Airlines
mar. 3/2511:35 amLHR - IDA
1 stop15h 31mUnited Airlines
Deal found 2/19$690
This StudentUniverse deal was found by Cheapflights users on 2/18. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/157:05 amBOI - LHR
1 stop16h 20mFinnair
mar. 4/2212:00 pmLHR - BOI
1 stop17h 11mFinnair
Deal found 2/18$692
This Delta deal was found by Cheapflights users on 2/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/1511:25 amBOI - LHR
2 stops18h 45mDelta
mar. 4/226:30 amLHR - BOI
2 stops17h 33mDelta
Deal found 2/18$693
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 3/197:05 amBOI - LHR
1 stop17h 15mIberia
mié. 3/269:25 amLHR - BOI
1 stop18h 30mIberia
Deal found 2/19$700
This Kissandfly.com 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 3/92:35 pmIDA - LHR
1 stop13h 05mLufthansa
mar. 3/254:00 pmLHR - IDA
2 stops31h 03mLufthansa
Deal found 2/19$704
This SmartFares 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 2/257:15 amBOI - LHR
2 stops27h 25mScandinavian Airlines
mar. 3/46:40 pmLHR - BOI
2 stops34h 41mScandinavian Airlines
Deal found 2/20$723
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.
dom. 4/67:17 amLWS - LHR
1 stop22h 58mKLM
dom. 4/138:55 pmLHR - LWS
2 stops33h 43mKLM
Deal found 2/20$738

Find flights from Idaho to Heathrow within your budget

Customize your flight search to find flights from Idaho to Heathrow 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 febrero 20, 2025.

Fly from

Idaho

Fly to

Heathrow

Route

Depart

Return

Price

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

mar. 4/15

12:06 pm-6:35 am

2 stops35h 29m

London Heathrow

mar. 4/22

2:05 pm-12:10 pm

2 stops29h 05m

$666

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

mar. 4/15

2:10 pm-11:25 am

1 stop14h 15m

London Heathrow

mar. 4/22

12:25 pm-11:59 pm

1 stop18h 34m

$674

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

dom. 3/9

1:00 pm-12:40 pm

2 stops17h 40m

London Heathrow

mar. 3/25

5:50 pm-6:13 pm

2 stops30h 23m

$676

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

mié. 3/19

11:10 am-12:00 pm

1 stop18h 50m

London Heathrow

mié. 3/26

3:00 pm-9:29 pm

2 stops36h 29m

$677

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

mié. 4/2

4:08 pm-12:20 pm

1 stop12h 12m

London Heathrow

mié. 4/9

7:25 am-9:26 pm

2 stops22h 01m

$688

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

dom. 3/9

2:35 pm-9:40 am

1 stop13h 05m

London Heathrow

mar. 3/25

11:35 am-9:06 pm

1 stop15h 31m

$690

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

mar. 4/15

7:05 am-6:25 am

1 stop16h 20m

London Heathrow

mar. 4/22

12:00 pm-10:11 pm

1 stop17h 11m

$692

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

mar. 4/15

11:25 am-1:10 pm

2 stops18h 45m

London Heathrow

mar. 4/22

6:30 am-5:03 pm

2 stops17h 33m

$693

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

mié. 3/19

7:05 am-6:20 am

1 stop17h 15m

London Heathrow

mié. 3/26

9:25 am-9:55 pm

1 stop18h 30m

$700

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

dom. 3/9

2:35 pm-9:40 am

1 stop13h 05m

London Heathrow

mar. 3/25

4:00 pm-5:03 pm

2 stops31h 03m

$704

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 42 results
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Best time to book a flight from Idaho to Heathrow

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

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

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

Currently, November is the cheapest month in which you can book a flight from Idaho to London Heathrow Airport (average of $661). Flying from Idaho to London Heathrow Airport in June is currently the most expensive (average of $1,136). 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 ID to LHR?

Find hourly flight availability from Idaho to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated febrero 20, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Idaho to London Heathrow Airport as you normally would.

Rainfall in Heathrow by month

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

In terms of precipitation, rainfall in London Heathrow Airport ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London Heathrow Airport when rainfall is around 1.6 in.

Temperature in Heathrow by month

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

If weather is an important factor for your trip to London Heathrow Airport, 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 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated febrero 20, 2025.
Peruse reviews from past customers who have flown with Delta, KLM and Finnair from Idaho to London to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,219 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Idaho to Heathrow. 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 Idaho to London Heathrow Airport one-way?

    $514 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on Virgin Atlantic and WestJet, with prices starting from $532 and $547, respectively.

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

    Most travelers choose Boise Air Term. Gowen Fld - London Heathrow, Spokane - London Heathrow or Idaho Falls Fanning Field - London Heathrow when deciding on the best route from Idaho to London Heathrow Airport.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Idaho to London Heathrow Airport (average of $661). Flying from Idaho to London Heathrow Airport in June is currently the most expensive (average of $1,136). 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

Traveling to a place near Idaho?

Book flights to Idaho if you plan to visit one of these locations
Hounslow
Hayes
Thornton Heath
Harrow
Luton
Wembley
Horley
Canterbury
Northampton
Gatwick
Milton Keynes
Dover
Orpington
Watford
Stratford-upon-Avon
Croydon
Borehamwood
Bromley
Folkestone
Ilford

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Alternative routes for Idaho to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Idaho to Heathrow

Discover the top 4 airlines that operate flights from Idaho to Heathrow. 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 2,558,603 searches. Data last updated febrero 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$670Average$1,020FlexibilityNo cancel feeOn-time69%
Virgin AtlanticCheapest$695Average$946FlexibilityNo cancel feeOn-time72%
American AirlinesCheapest$697Average$861FlexibilityNo cancel feeOn-time71%
DeltaCheapest$698Average$1,133FlexibilityNo cancel feeOn-timeN/A
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