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$612+ Cheap flights from Boise (BOI) to Heathrow (LHR)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/13. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — LHR
Dec 18 — Dec 251
Thu 12/18
Thu 12/25
1 adult, Economy
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Cheapflights Tip: The best prices from Boise Air Term. Gowen Fld to London Heathrow are usually found in April or February, booked 8 days in advance, depart on a Tuesday or Wednesday and return on a Monday

Cheap flight deals from Boise to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Boise (BOI) 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 November 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$612
(Cheapflightsfares)

Popular in

June

Cheapest in

April

Average price

$1,108
Provider with most accurate pricing for Boise Air Term. Gowen Fld-London Heathrow flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-London Heathrow flights.
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From Boise Air Term. Gowen Fld to London Heathrow
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($207 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($42 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find flight deals from Boise to Heathrow

Cheapest flights from Boise to Heathrow
Explore the most affordable flight options available from Boise to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 18, 2025.

This Virgin Atlantic deal was found by Cheapflights users on 11/17. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/2311:42 amBOI - LHR
1 stop15h 48mVirgin Atlantic
Tue 12/22:45 pmLHR - BOI
1 stop12h 35mVirgin Atlantic
Deal found 11/17$647
This United Airlines deal was found by Cheapflights users on 11/17. 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.
Fri 12/512:16 pmBOI - LHR
1 stop15h 59mUnited Airlines
Tue 12/96:35 amLHR - BOI
2 stops18h 32mUnited Airlines
Deal found 11/17$667
This KLM deal was found by Cheapflights users on 11/16. 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.
Sun 11/165:35 amBOI - LHR
1 stop18h 30mMultiple Airlines
Sun 11/235:20 pmLHR - BOI
1 stop36h 19mMultiple Airlines
Deal found 11/16$687
This Virgin Atlantic deal was found by Cheapflights users on 11/17. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/512:55 pmBOI - LHR
1 stop14h 05mVirgin Atlantic
Tue 12/912:20 pmLHR - BOI
1 stop15h 00mVirgin Atlantic
Deal found 11/17$697
This United Airlines deal was found by Cheapflights users on 11/15. 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.
Wed 12/318:30 amBOI - LHR
1 stop15h 55mUnited Airlines
Wed 1/76:00 pmLHR - BOI
2 stops34h 52mUnited Airlines
Deal found 11/15$721
This Expedia deal was found by Cheapflights users on 11/17. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/237:00 pmBOI - LHR
2 stops33h 50mMultiple Airlines
Tue 12/28:15 pmLHR - BOI
2 stops28h 52mMultiple Airlines
Deal found 11/17$727
This United Airlines deal was found by Cheapflights users on 11/17. 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 11/236:15 amBOI - LHR
2 stops42h 15mUnited Airlines
Tue 12/23:30 pmLHR - BOI
2 stops33h 37mUnited Airlines
Deal found 11/17$752
This Trip.com deal was found by Cheapflights users on 11/15. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/317:00 amBOI - LHR
1 stop16h 50mIberia
Wed 1/78:20 amLHR - BOI
1 stop18h 05mIberia
Deal found 11/15$767
This Delta deal was found by Cheapflights users on 11/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/163:54 pmBOI - LHR
1 stop17h 56mDelta
Wed 1/146:30 amLHR - BOI
2 stops20h 42mDelta
Deal found 11/16$796

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boise 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 November 18, 2025.
Use the filters below to find and compare flights from Boise to London Heathrow Airport that are best for you.

Fly from

Boise

Fly to

Heathrow

Route

Depart

Return

Price

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 1/13

8:15 am-7:55 am

1 stop16h 40m

London Heathrow

Tue 1/27

6:35 am-6:07 pm

2 stops18h 32m

$612

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 2/10

8:15 am-5:55 am

1 stop14h 40m

London Heathrow

Tue 2/24

6:30 am-9:32 pm

2 stops22h 02m

$622

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 2/10

5:16 pm-7:10 am

2 stops30h 54m

London Heathrow

Tue 2/24

11:10 am-11:23 pm

2 stops19h 13m

$626

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Sun 2/1

2:37 pm-9:40 am

1 stop12h 03m

London Heathrow

Wed 2/11

6:35 am-6:07 pm

2 stops18h 32m

$626

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 1/13

8:15 am-7:55 am

1 stop16h 40m

London Heathrow

Tue 1/27

6:35 am-6:07 pm

2 stops18h 32m

$626

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Sun 2/1

7:20 am-10:00 am

1 stop19h 40m

London Heathrow

Wed 2/11

8:20 am-7:25 pm

1 stop18h 05m

$639

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Sun 11/23

11:42 am-10:30 am

1 stop15h 48m

London Heathrow

Tue 12/2

2:45 pm-8:20 pm

1 stop12h 35m

$647

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Mon 12/1

8:26 pm-7:30 pm

3 stops40h 04m

$1,268

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Mon 12/1

12:45 pm-5:55 am

1 stop34h 10m

$7,814

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/18

Compare providers for flights from Boise to Heathrow

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boise to Heathrow in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
AranGrantPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Boise-London Heathrow Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Boise-London Heathrow Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Boise-London Heathrow Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boise-London Heathrow Airport flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boise-London Heathrow Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Boise to Heathrow

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

Cheapflights Insights

Everything you need to know about your flight from Boise to London Heathrow Airport

How far ahead should I book a flight from Boise to London Heathrow Airport?

Use this chart to determine the optimal time to book a round-trip flight from Boise to Heathrow. Price data was last updated on November 14, 2025.

To ensure you get the cheapest price possible for a flight from Boise to London Heathrow Airport, you should look to book at least 7 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, July is the cheapest month in which you can book a flight from Boise to London Heathrow Airport (average of $611). Flying from Boise to London Heathrow Airport in June is currently the most expensive (average of $1,085). 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 BOI to LHR?

Find hourly flight availability from Boise 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 November 18, 2025.

A simple way to save on the total cost of your ticket is to fly from Boise to London Heathrow Airport in the evening. If you’re flexible enough to do this you can expect to save up to 11% on your trip compared to booking a flight in the morning.

What is the cheapest day to fly from Boise to London Heathrow Airport?

Use this chart to determine the cheapest time to fly round-trip from Boise to Heathrow. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Boise to London Heathrow Airport flight should consider departing on Wednesday evenings when fares are most often at their lowest. Friday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Boise to London Heathrow Airport?

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 November 18, 2025.
Read reviews from past customers who have flown Delta, KLM, and Virgin Atlantic from Boise to London Heathrow Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,008 reviews

Overall

7.9

Boarding

8.1

Comfort

7.9

Entertainment

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,008 reviews
Delta
7.9
Good
8,008 reviews

Overall

7.9

Boarding

8.1

Comfort

7.9

Entertainment

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
KLM
7.7
Good
1,411 reviews
Delta
7.9
Good
8,008 reviews

Overall

7.9

Boarding

8.1

Comfort

7.9

Entertainment

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Virgin Atlantic
7.5
Good
673 reviews
Delta
7.9
Good
8,008 reviews

Overall

7.9

Boarding

8.1

Comfort

7.9

Entertainment

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,015 reviews
Delta
7.9
Good
8,008 reviews

Overall

7.9

Boarding

8.1

Comfort

7.9

Entertainment

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,047 reviews
Delta
7.9
Good
8,008 reviews

Overall

7.9

Boarding

8.1

Comfort

7.9

Entertainment

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Boise to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Boise to London Heathrow?

    Located just 3.3 mi from the city center, Boise Air Term. Gowen Fld is the airport most travelers will use when flying to London Heathrow from Boise. Booking flights from Air Term. Gowen Fld (BOI) to London Heathrow should be relatively easy as there are 0 daily outbound flights to London Heathrow from 5 different airlines.

  • How long is the flight from Boise to London Heathrow Airport?

    A quick flight from Boise to London Heathrow Airport can take about 16h 40m. Lufthansa provides one of the quickest options available for as low as $612. The distance between Boise and London Heathrow Airport is about 4829 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Boise to London Heathrow Airport round-trip?

    Our cheapest airline available from Boise to London Heathrow Airport is KLM. Our recent data shows that you can find tickets from as low as $577 on this airline. Additional options worth looking into are United Airlines and Virgin Atlantic, starting at $639 and $695 round-trip. KLM is priced at 38% lower than the current average price of a flight leaving 3 months from now.

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

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

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

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

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

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

    Currently, July is the cheapest month in which you can book a flight from Boise to London Heathrow Airport (average of $611). Flying from Boise to London Heathrow Airport in June is currently the most expensive (average of $1,085). 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 London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Hounslow
Ilford
Hayes
Southend-on-Sea
Harrow
Croydon
Eastleigh
Dartford
Dover
Winchester
Orpington
Northampton
Gatwick
Borehamwood
Broadway
Aylesbury
Bedford
Chipping Norton
Wembley
Folkestone

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Top 5 airlines flying from Boise to Heathrow

Discover the top 5 airlines that operate flights from Boise 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 November 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$577Average$774FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$639Average$899FlexibilityNo cancel feeOn-time69%
Virgin AtlanticCheapest$695Average$881FlexibilityNo cancel feeOn-time72%
DeltaCheapest$701Average$1,047FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$703Average$873FlexibilityNo cancel feeOn-time71%

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