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$400+ 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 5/26. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — LHR
Dec 23 — Dec 301
Mon 12/23
Mon 12/30
1 adult, Economy
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Cheap flight deals from Idaho to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Idaho (USID) to Heathrow (LHR). 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 December 18, 2024.

Round-trip from

$688
(Scandinavian Airlines)

One-way from

$400
(KAYAK)
From Idaho to London Heathrow
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One-way flight from Idaho to London Heathrow
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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 December 18, 2024.

This KLM deal was found by Cheapflights users on 12/17. 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.
Sun 12/297:35 amBOI - LHR
1 stop22h 05mKLM
Mon 1/138:25 pmLHR - BOI
2 stops26h 51mKLM
Deal found 12/17$1,480
This Delta deal was found by Cheapflights users on 12/17. 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.
Sun 12/295:59 amBOI - LHR
2 stops17h 51mDelta
Mon 1/136:30 amLHR - BOI
2 stops20h 45mDelta
Deal found 12/17$1,535
This American Airlines deal was found by Cheapflights users on 12/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/291:23 pmBOI - LHR
1 stop13h 17mAmerican Airlines
Mon 1/132:30 pmLHR - BOI
1 stop14h 54mAmerican Airlines
Deal found 12/17$1,544
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Sun 12/225:41 pmIDA - LHR
1 stop32h 59mUnited Airlines
Tue 12/313:00 pmLHR - IDA
2 stops49h 51mUnited Airlines
Deal found 12/17$1,745
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Sat 12/216:25 pmGEG - LHR
1 stop31h 15mUnited Airlines
Sat 12/281:30 pmLHR - GEG
2 stops39h 34mUnited Airlines
Deal found 12/17$1,888
This Justfly.com deal was found by Cheapflights users on 12/17. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/205:20 pmBOI - LHR
2 stops30h 50mAir Canada
Fri 1/33:00 pmLHR - BOI
2 stops52h 17mAir Canada
Deal found 12/17$1,952
This United Airlines deal was found by Cheapflights users on 12/16. 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.
Fri 12/207:00 amJAC - LHR
1 stop19h 40mUnited Airlines
Sun 12/223:00 pmLHR - JAC
2 stops33h 09mUnited Airlines
Deal found 12/16$2,038
This United deal was found by Cheapflights users on 12/17. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/205:00 amBOI - LHR
2 stops19h 30mUnited Airlines
Fri 1/31:35 pmLHR - BOI
1 stop29h 42mUnited Airlines
Deal found 12/17$2,150
This Air Canada deal was found by Cheapflights users on 12/17. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2910:42 amBOI - LHR
3 stops18h 08mMultiple Airlines
Mon 1/133:00 pmLHR - BOI
2 stops28h 20mMultiple Airlines
Deal found 12/17$2,222
This KLM deal was found by Cheapflights users on 12/17. 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.
Fri 12/206:30 amGEG - LHR
1 stop16h 35mKLM
Sat 12/2810:45 amLHR - GEG
1 stop13h 55mKLM
Deal found 12/17$2,626
This Cheapflightsfares deal was found by Cheapflights users on 12/16. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/3010:42 amBOI - LHR
1 stop15h 58mLufthansa
Sat 1/411:35 amLHR - BOI
1 stop16h 58mLufthansa
Deal found 12/16$2,648
This American Airlines deal was found by Cheapflights users on 12/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/225:25 amIDA - LHR
1 stop24h 55mAmerican Airlines
Tue 12/312:30 pmLHR - IDA
1 stop14h 51mAmerican Airlines
Deal found 12/17$3,366

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 December 18, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Tue 1/14

7:02 am-6:30 pm

2 stops27h 28m

London Heathrow

Wed 1/29

6:40 am-10:31 pm

2 stops23h 51m

$688

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Mon 1/13

7:15 am-4:00 pm

2 stops25h 45m

London Heathrow

Tue 1/28

6:40 am-10:21 pm

2 stops22h 41m

$728

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Mon 2/17

1:35 pm-11:40 am

1 stop15h 05m

London Heathrow

Thu 2/27

8:25 pm-4:16 pm

2 stops26h 51m

$760

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Tue 1/14

1:25 pm-11:10 am

1 stop13h 45m

London Heathrow

Tue 1/28

6:30 am-2:45 pm

2 stops16h 15m

$760

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Tue 2/11

6:00 am-10:00 am

1 stop21h 00m

London Heathrow

Thu 2/20

8:25 pm-6:17 pm

2 stops28h 52m

$760

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Mon 2/17

7:05 am-7:20 am

1 stop17h 15m

London Heathrow

Thu 2/27

10:40 am-9:50 pm

1 stop18h 10m

$764

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Tue 2/11

1:10 pm-11:40 am

2 stops15h 30m

London Heathrow

Thu 2/20

5:50 pm-6:17 pm

2 stops31h 27m

$765

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Mon 2/17

10:35 am-11:10 am

2 stops17h 35m

London Heathrow

Thu 2/27

6:30 am-6:38 pm

2 stops19h 08m

$765

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Mon 2/17

10:35 am-11:10 am

2 stops17h 35m

London Heathrow

Thu 2/27

6:20 am-8:15 pm

2 stops20h 55m

$769

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Mon 2/10

6:00 am-4:40 pm

2 stops27h 40m

London Heathrow

Thu 2/20

6:20 am-10:44 pm

2 stops23h 24m

$769

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/18

Showing 1-10 of 54 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 $1,088). 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 December 18, 2024.

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 December 18, 2024.
Peruse reviews from past customers who have flown with Scandinavian Airlines, KLM and Delta 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
8,604 reviews

Crew

8.6

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

7.9

Reviews

1 / 10

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

Delta
8.0
Very good
8,604 reviews
Delta
8.0
Very good
8,604 reviews

Crew

8.6

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

7.9

Reviews

1 / 10

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

Alaska Airlines
8.0
Very good
9,554 reviews
Delta
8.0
Very good
8,604 reviews

Crew

8.6

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

7.9

Reviews

1 / 10

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

Air New Zealand
8.0
Very good
496 reviews
Delta
8.0
Very good
8,604 reviews

Crew

8.6

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

7.9

Reviews

1 / 10

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

KLM
7.8
Good
1,349 reviews
Delta
8.0
Very good
8,604 reviews

Crew

8.6

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

7.9

Reviews

1 / 10

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

Finnair
7.7
Good
1,285 reviews
Delta
8.0
Very good
8,604 reviews

Crew

8.6

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

7.9

Reviews

1 / 10

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?

    $400 is the cheapest one-way deal found within the past few days, from Scandinavian Airlines. You may also be able to find cheap deals on American Airlines and Delta, with prices starting from $462 and $482, 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 $1,088). 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.

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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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Boston to Stansted flights
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Philadelphia to Heathrow flights
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LaGuardia to Gatwick flights
Raleigh to Heathrow flights
San Francisco to London City flights
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Minneapolis to Heathrow flights
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Baltimore to Stansted flights
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Dallas/Fort Worth to Gatwick flights

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 December 18, 2024.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$654Average$948FlexibilityNo cancel feeOn-time69%
Virgin AtlanticCheapest$670Average$947FlexibilityNo cancel feeOn-time72%
American AirlinesCheapest$689Average$872FlexibilityNo cancel feeOn-time71%
DeltaCheapest$698Average$1,091FlexibilityNo cancel feeOn-timeN/A
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