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$494+ Cheap flights from Boise (BOI) 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 7/21. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — LHR
Mar 31 — Apr 71
Mon 3/31
Mon 4/7
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 October or September, booked 89 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 March 26, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$685
(United Airlines)

One-way from

$494
(United Airlines)

Popular in

June

Cheapest in

October

Average price

$844
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.
Search Deals
From Boise Air Term. Gowen Fld to London Heathrow
Search Deals
One-way flight from Boise Air Term. Gowen Fld to London Heathrow
Search Deals
Highest demand for flights based on searches. 24% potential increase in price ($306 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($40 potential savings vs. average RT price).
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Average for round-trip flights in March 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 March 26, 2025.

This FlightHub deal was found by Cheapflights users on 3/25. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/231:00 pmBOI - LHR
2 stops21h 40mScandinavian Airlines
Wed 10/16:40 amLHR - BOI
2 stops21h 24mScandinavian Airlines
Deal found 3/25$686
This Delta deal was found by Cheapflights users on 3/24. 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 9/301:43 pmBOI - LHR
1 stop16h 47mDelta
Wed 10/86:30 amLHR - BOI
2 stops17h 00mDelta
Deal found 3/24$694
This Scandinavian Airlines deal was found by Cheapflights users on 3/24. 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 9/3012:21 pmBOI - LHR
2 stops22h 19mMultiple Airlines
Wed 10/87:05 amLHR - BOI
3 stops23h 11mMultiple Airlines
Deal found 3/24$703
This KLM deal was found by Cheapflights users on 3/24. 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.
Tue 9/302:35 pmBOI - LHR
1 stop16h 40mKLM
Wed 10/812:45 pmLHR - BOI
1 stop17h 44mKLM
Deal found 3/24$708
This United deal was found by Cheapflights users on 3/24. 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.
Thu 5/152:00 pmBOI - LHR
1 stop17h 10mUnited Airlines
Tue 5/205:40 pmLHR - BOI
2 stops31h 20mUnited Airlines
Deal found 3/24$714
This Justfly.com deal was found by Cheapflights users on 3/25. 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.
Wed 9/172:45 pmBOI - LHR
2 stops15h 35mAir Canada
Fri 10/39:30 amLHR - BOI
2 stops44h 35mAir Canada
Deal found 3/25$857
This Finnair deal was found by Cheapflights users on 3/25. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/177:30 amBOI - LHR
1 stop15h 55mFinnair
Fri 10/312:00 pmLHR - BOI
1 stop16h 14mFinnair
Deal found 3/25$870
This Virgin Atlantic deal was found by Cheapflights users on 3/24. 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 3/284:40 pmBOI - LHR
1 stop12h 30mVirgin Atlantic
Sat 4/55:25 pmLHR - BOI
1 stop13h 22mVirgin Atlantic
Deal found 3/24$1,058
This oojo deal was found by Cheapflights users on 3/25. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/91:00 pmBOI - LHR
2 stops24h 20mIcelandair
Mon 5/269:25 pmLHR - BOI
2 stops32h 17mIcelandair
Deal found 3/25$1,071
This Expedia deal was found by Cheapflights users on 3/25. 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 7/2711:44 amBOI - LHR
1 stop14h 16mIberia
Tue 8/1212:00 pmLHR - BOI
1 stop16h 16mIberia
Deal found 3/25$1,159
This Lufthansa deal was found by Cheapflights users on 3/25. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/3012:06 pmBOI - LHR
1 stop16h 39mLufthansa
Wed 5/142:50 pmLHR - BOI
1 stop13h 52mLufthansa
Deal found 3/25$1,899
This oojo deal was found by Cheapflights users on 3/25. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2211:19 amBOI - LHR
1 stop19h 21mBritish Airways
Mon 10/64:30 pmLHR - BOI
1 stop12h 50mBritish Airways
Deal found 3/25$1,921

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 March 26, 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

Wed 9/3

3:43 pm-5:40 pm

2 stops18h 57m

London Heathrow

Tue 9/16

6:40 am-11:16 pm

2 stops23h 36m

$687

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Wed 9/3

8:40 am-11:20 am

1 stop19h 40m

London Heathrow

Tue 9/16

9:55 am-11:16 pm

1 stop20h 21m

$706

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Thu 5/15

2:00 pm-2:10 pm

1 stop17h 10m

London Heathrow

Tue 5/20

5:40 pm-6:00 pm

2 stops31h 20m

$714

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Thu 5/15

1:00 pm-5:40 pm

2 stops21h 40m

London Heathrow

Tue 5/20

9:05 pm-7:09 pm

3 stops29h 04m

$816

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Wed 9/17

2:45 pm-1:20 pm

2 stops15h 35m

London Heathrow

Fri 10/3

9:30 am-11:05 pm

2 stops44h 35m

$857

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Wed 9/17

7:30 am-6:25 am

1 stop15h 55m

London Heathrow

Fri 10/3

12:00 pm-9:14 pm

1 stop16h 14m

$870

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Fri 5/9

1:00 pm-8:20 pm

2 stops24h 20m

London Heathrow

Mon 5/26

9:25 pm-10:42 pm

2 stops32h 17m

$1,071

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Sun 7/27

11:44 am-9:00 am

1 stop14h 16m

London Heathrow

Tue 8/12

12:00 pm-9:16 pm

1 stop16h 16m

$1,159

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Mon 5/12

2:47 pm-1:10 pm

1 stop15h 23m

London Heathrow

Mon 6/23

12:25 pm-11:59 pm

1 stop18h 34m

$1,420

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Wed 4/30

12:06 pm-11:45 am

1 stop16h 39m

London Heathrow

Wed 5/14

2:50 pm-9:42 pm

1 stop13h 52m

$1,899

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Showing 1-10 of 21 results
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2
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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 March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
business-class.comPrice 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boise-London Heathrow Airport flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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 March 21, 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 88 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, November is the cheapest month in which you can book a flight from Boise to London Heathrow Airport (average of $661). Flying from Boise to London Heathrow Airport in June is currently the most expensive (average of $1,115). 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 March 26, 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 12% 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.

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 March 26, 2025.
Delta
8.0
Very good
7,891 reviews

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Crew

8.5

Food

7.3

Overall

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
7,891 reviews
Delta
8.0
Very good
7,891 reviews

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Crew

8.5

Food

7.3

Overall

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
1,318 reviews
Delta
8.0
Very good
7,891 reviews

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Crew

8.5

Food

7.3

Overall

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
1,266 reviews
Delta
8.0
Very good
7,891 reviews

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Crew

8.5

Food

7.3

Overall

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.
United Airlines
7.4
Good
8,608 reviews
Delta
8.0
Very good
7,891 reviews

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Crew

8.5

Food

7.3

Overall

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
7.4
Good
634 reviews
Delta
8.0
Very good
7,891 reviews

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Crew

8.5

Food

7.3

Overall

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 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 4 different airlines.

  • 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 United Airlines. Our recent data shows that you can find tickets from as low as $685 on this airline. Additional options worth looking into are Scandinavian Airlines and Delta, starting at $687 and $692 round-trip. United Airlines is priced at 28% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Boise to London Heathrow Airport one-way?

    The cheapest airlines for a one-way flight from Boise to London Heathrow Airport are United Airlines ($494), KLM ($923), and Air Canada ($929).

  • 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, November is the cheapest month in which you can book a flight from Boise to London Heathrow Airport (average of $661). Flying from Boise to London Heathrow Airport in June is currently the most expensive (average of $1,115). 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 Boise?

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

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Top 4 airlines flying from Boise to Heathrow

Discover the top 4 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 March 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$687Average$1,021FlexibilityNo cancel feeOn-time69%
Virgin AtlanticCheapest$695Average$893FlexibilityNo cancel feeOn-time72%
American AirlinesCheapest$697Average$857FlexibilityNo cancel feeOn-time71%
DeltaCheapest$727Average$1,066FlexibilityNo cancel feeOn-timeN/A
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