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$399+ 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 5/13. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — LHR
Mar 16 — Mar 231
Mon 3/16
Mon 3/23
1 adult, Economy
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Cheap 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 February 14, 2026.

This Iberia deal was found by Cheapflights users on 2/12. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/281:53 pm
BOI
-
LHR
1 stop17h 32m
Iberia
Tue 5/57:50 am
LHR
-
BOI
2 stops20h 17m
Iberia
Deal found 2/12$644
This Delta deal was found by Cheapflights users on 2/10. 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 4/57:05 am
BOI
-
LHR
1 stop20h 10m
Delta
Tue 4/216:30 am
LHR
-
BOI
2 stops16h 44m
Delta
Deal found 2/10$648
This United Airlines deal was found by Cheapflights users on 2/11. 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.
Thu 3/197:07 am
BOI
-
LHR
1 stop24h 23m
United Airlines
Thu 3/2610:05 am
LHR
-
BOI
1 stop19h 52m
United Airlines
Deal found 2/11$661
This Air Canada deal was found by Cheapflights users on 2/10. 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 4/195:00 am
BOI
-
LHR
2 stops25h 20m
Air Canada
Fri 5/15:40 pm
LHR
-
BOI
2 stops32h 53m
Air Canada
Deal found 2/10$662
This Air Canada deal was found by Cheapflights users on 2/10. 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.
Mon 4/206:15 am
BOI
-
LHR
2 stops20h 20m
Air Canada
Thu 4/305:40 pm
LHR
-
BOI
2 stops34h 37m
Air Canada
Deal found 2/10$671
This KLM deal was found by Cheapflights users on 2/10. 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 4/54:40 pm
BOI
-
LHR
1 stop15h 55m
Multiple Airlines
Tue 4/219:55 am
LHR
-
BOI
1 stop20h 05m
Multiple Airlines
Deal found 2/10$672
This United Airlines deal was found by Cheapflights users on 2/10. 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 4/192:37 pm
BOI
-
LHR
1 stop12h 03m
United Airlines
Tue 4/2811:25 am
LHR
-
BOI
1 stop13h 40m
United Airlines
Deal found 2/10$677
This Air Canada deal was found by Cheapflights users on 2/10. 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 4/196:15 am
BOI
-
LHR
2 stops24h 05m
Air Canada
Tue 4/289:30 am
LHR
-
BOI
2 stops31h 24m
Air Canada
Deal found 2/10$681
This Cheapflightsfares deal was found by Cheapflights users on 2/11. 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.
Wed 4/82:37 pm
BOI
-
LHR
2 stops19h 03m
Lufthansa
Mon 5/49:00 am
LHR
-
BOI
2 stops20h 45m
Lufthansa
Deal found 2/11$682

Find 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 February 14, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$644
(Iberia)

One-way from

$399
(United Airlines)

Popular in

January

Cheapest in

April

Average price

$807
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. 15% potential increase in price ($186 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($45 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

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 February 14, 2026.
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

Sun 4/5

7:05 am-10:15 am

1 stop20h 10m

London Heathrow

Tue 4/21

6:30 am-4:14 pm

2 stops16h 44m

$648

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Thu 3/19

7:07 am-1:30 pm

1 stop24h 23m

London Heathrow

Thu 3/26

10:05 am-11:57 pm

1 stop19h 52m

$661

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Wed 4/8

9:26 am-7:25 am

1 stop14h 59m

London Heathrow

Mon 5/4

11:05 am-10:45 pm

2 stops42h 40m

$662

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 3/17

5:30 am-6:50 am

2 stops19h 20m

London Heathrow

Thu 3/26

10:45 am-11:59 pm

1 stop19h 14m

$666

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Sun 4/5

6:15 am-9:35 am

2 stops20h 20m

London Heathrow

Tue 4/21

3:05 pm-4:48 pm

2 stops32h 43m

$666

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Sun 4/5

4:40 pm-3:35 pm

1 stop15h 55m

London Heathrow

Tue 4/21

9:55 am-11:00 pm

1 stop20h 05m

$672

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Sun 4/19

9:26 am-7:25 am

1 stop14h 59m

London Heathrow

Fri 5/1

1:05 pm-10:16 pm

1 stop16h 11m

$677

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Sun 4/19

9:26 am-7:25 am

1 stop14h 59m

London Heathrow

Wed 4/29

2:50 pm-9:22 pm

1 stop13h 32m

$677

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 4/21

9:26 am-7:25 am

1 stop14h 59m

London Heathrow

Wed 4/29

2:50 pm-9:22 pm

1 stop13h 32m

$677

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Mon 4/20

9:26 am-7:25 am

1 stop14h 59m

London Heathrow

Thu 4/30

11:25 am-10:37 pm

1 stop18h 12m

$677

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/11

Showing 1-10 of 18 results
1
2

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 February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 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

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

Currently, October is the cheapest month in which you can book a flight from Boise to London Heathrow Airport (average of $622). 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.

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 February 14, 2026.
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
8,202 reviews

Boarding

8.1

Entertainment

7.8

Overall

7.9

Food

7.2

Comfort

7.9

Crew

8.5

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
8,202 reviews
Delta
7.9
Good
8,202 reviews

Boarding

8.1

Entertainment

7.8

Overall

7.9

Food

7.2

Comfort

7.9

Crew

8.5

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
1,454 reviews
Delta
7.9
Good
8,202 reviews

Boarding

8.1

Entertainment

7.8

Overall

7.9

Food

7.2

Comfort

7.9

Crew

8.5

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
678 reviews
Delta
7.9
Good
8,202 reviews

Boarding

8.1

Entertainment

7.8

Overall

7.9

Food

7.2

Comfort

7.9

Crew

8.5

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
9,292 reviews
Delta
7.9
Good
8,202 reviews

Boarding

8.1

Entertainment

7.8

Overall

7.9

Food

7.2

Comfort

7.9

Crew

8.5

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 4 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 19h 20m. Delta provides one of the quickest options available for as low as $666. 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 Virgin Atlantic and United Airlines, starting at $604 and $639 round-trip. KLM is priced at 42% 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, October is the cheapest month in which you can book a flight from Boise to London Heathrow Airport (average of $622). 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
Ilford
Croydon
Hounslow
Southend-on-Sea
Harrow
Eastleigh
Gatwick
Dartford
Dover
Winchester
Orpington
Northampton
Watford
Hayes
Borehamwood
Broadway
Aylesbury
Chipping Norton
Horley
Kingston upon Thames

Browse thousands of different options on Cheapflights for your next trip

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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 February 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$577Average$774FlexibilityNo cancel feeOn-time75%
Virgin AtlanticCheapest$604Average$900FlexibilityNo cancel feeOn-time72%
United AirlinesCheapest$639Average$877FlexibilityNo cancel feeOn-time69%
DeltaCheapest$701Average$1,006FlexibilityNo cancel feeOn-timeN/A

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