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$371+ 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
Jan 22 — Jan 291
Wed 1/22
Wed 1/29
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 January 17, 2025.

Round-trip from

$719
(United Airlines)

One-way from

$371
(Ovago)
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 January 17, 2025.

This Scandinavian Airlines deal was found by Cheapflights users on 1/14. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/226:40 amGEG - LHR
2 stops27h 00mMultiple Airlines
Mon 10/1310:20 amLHR - GEG
2 stops20h 13mMultiple Airlines
Deal found 1/14$680
This Scandinavian Airlines deal was found by Cheapflights users on 1/14. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/107:15 amBOI - LHR
3 stops28h 35mScandinavian Airlines
Tue 2/256:40 amLHR - BOI
2 stops22h 41mScandinavian Airlines
Deal found 1/14$682
This Scandinavian Airlines deal was found by Cheapflights users on 1/15. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/232:45 pmBOI - LHR
2 stops19h 55mMultiple Airlines
Wed 10/110:20 amLHR - BOI
2 stops18h 15mMultiple Airlines
Deal found 1/15$686
This United Airlines deal was found by Cheapflights users on 1/16. 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.
Sun 3/231:20 pmBOI - LHR
1 stop18h 10mUnited Airlines
Tue 4/82:05 pmLHR - BOI
2 stops34h 47mUnited Airlines
Deal found 1/16$719
This Ovago deal was found by Cheapflights users on 1/15. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/37:05 amBOI - LHR
1 stop17h 15mFinnair
Tue 3/119:25 amLHR - BOI
1 stop18h 30mFinnair
Deal found 1/15$723
This Booking.com deal was found by Cheapflights users on 1/16. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/235:00 amBOI - LHR
2 stops20h 10mAir Canada
Tue 4/85:40 pmLHR - BOI
2 stops31h 12mAir Canada
Deal found 1/16$725
This KLM deal was found by Cheapflights users on 1/16. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/37:05 amJAC - LHR
1 stop19h 55mKLM
Tue 2/118:25 pmLHR - JAC
2 stops27h 14mKLM
Deal found 1/16$726
This United Airlines deal was found by Cheapflights users on 1/16. 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.
Mon 2/310:45 amJAC - LHR
2 stops17h 05mUnited Airlines
Tue 2/116:30 amLHR - JAC
2 stops21h 39mUnited Airlines
Deal found 1/16$730
This Netflights deal was found by Cheapflights users on 1/15. 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.
Sun 2/26:00 amGEG - LHR
1 stop17h 05mVirgin Atlantic
Tue 2/189:10 amLHR - GEG
1 stop21h 42mVirgin Atlantic
Deal found 1/15$734
This United Airlines deal was found by Cheapflights users on 1/15. 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.
Tue 2/45:10 amGEG - LHR
2 stops18h 00mUnited Airlines
Tue 2/113:00 pmLHR - GEG
2 stops32h 12mUnited Airlines
Deal found 1/15$736
This American Airlines deal was found by Cheapflights users on 1/15. 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.
Wed 2/123:21 pmGEG - LHR
1 stop13h 59mAmerican Airlines
Wed 2/1910:40 amLHR - GEG
1 stop16h 12mAmerican Airlines
Deal found 1/15$739
This Travelocity deal was found by Cheapflights users on 1/14. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/107:00 amBOI - LHR
1 stop17h 20mIberia
Tue 2/259:25 amLHR - BOI
1 stop19h 25mIberia
Deal found 1/14$740

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 January 17, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Mon 2/10

7:15 am-6:50 pm

3 stops28h 35m

London Heathrow

Tue 2/25

6:40 am-10:21 pm

2 stops22h 41m

$682

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Sun 3/23

1:20 pm-1:30 pm

1 stop18h 10m

London Heathrow

Tue 4/8

2:05 pm-5:52 pm

2 stops34h 47m

$719

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Mon 3/3

7:05 am-7:20 am

1 stop17h 15m

London Heathrow

Tue 3/11

9:25 am-9:55 pm

1 stop18h 30m

$723

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Sun 3/23

5:00 am-7:10 am

2 stops20h 10m

London Heathrow

Tue 4/8

5:40 pm-5:52 pm

2 stops31h 12m

$725

JacksonLondon

JAC - LHR

JACLHR

Jackson Hole

Mon 2/3

7:05 am-10:00 am

1 stop19h 55m

London Heathrow

Tue 2/11

8:25 pm-4:39 pm

2 stops27h 14m

$726

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Wed 4/16

2:00 pm-1:20 pm

2 stops16h 20m

London Heathrow

Wed 4/30

7:25 am-5:52 pm

2 stops17h 27m

$728

JacksonLondon

JAC - LHR

JACLHR

Jackson Hole

Mon 2/3

10:45 am-10:50 am

2 stops17h 05m

London Heathrow

Tue 2/11

6:30 am-9:09 pm

2 stops21h 39m

$730

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Sun 2/2

6:00 am-7:05 am

1 stop17h 05m

London Heathrow

Tue 2/18

9:10 am-10:52 pm

1 stop21h 42m

$734

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Tue 2/4

5:10 am-9:40 am

1 stop20h 30m

London Heathrow

Tue 2/11

3:00 pm-3:12 pm

2 stops32h 12m

$736

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Wed 2/12

3:21 pm-1:20 pm

1 stop13h 59m

London Heathrow

Wed 2/19

10:40 am-6:52 pm

1 stop16h 12m

$739

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/15

Showing 1-10 of 49 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 $1,137). 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 January 17, 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 January 17, 2025.
Peruse reviews from past customers who have flown with United Airlines, 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
8,511 reviews

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.6

Entertainment

7.9

Comfort

8.0

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
8,511 reviews
Delta
8.0
Very good
8,511 reviews

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.6

Entertainment

7.9

Comfort

8.0

Reviews

1 / 10

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

KLM
7.8
Good
1,339 reviews
Delta
8.0
Very good
8,511 reviews

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.6

Entertainment

7.9

Comfort

8.0

Reviews

1 / 10

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

Finnair
7.6
Good
1,285 reviews
Delta
8.0
Very good
8,511 reviews

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.6

Entertainment

7.9

Comfort

8.0

Reviews

1 / 10

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

SWISS
7.5
Good
1,598 reviews
Delta
8.0
Very good
8,511 reviews

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.6

Entertainment

7.9

Comfort

8.0

Reviews

1 / 10

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

Virgin Atlantic
7.5
Good
664 reviews
Delta
8.0
Very good
8,511 reviews

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.6

Entertainment

7.9

Comfort

8.0

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?

    $371 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 Air Canada and United Airlines, with prices starting from $478 and $483, 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 $1,137). 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
Hayes
Hounslow
Thornton Heath
Harrow
Luton
Wembley
Canterbury
Northampton
Gatwick
Horley
Milton Keynes
Dover
Watford
Orpington
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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Dulles Intl to London City flights
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LaGuardia to Gatwick flights
Baltimore to Gatwick flights
Boston to Stansted flights
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Los Angeles to London City flights
Newark to Stansted flights
O'Hare Intl to Gatwick flights
Stewart to Luton flights
O'Hare Intl to London City flights
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San Francisco to London City flights
San Francisco to Gatwick flights
Baltimore to Stansted flights
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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 January 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$670Average$958FlexibilityNo cancel feeOn-time69%
Virgin AtlanticCheapest$670Average$939FlexibilityNo cancel feeOn-time72%
American AirlinesCheapest$689Average$878FlexibilityNo cancel feeOn-time71%
DeltaCheapest$698Average$1,091FlexibilityNo cancel feeOn-timeN/A
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