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Cheap flights from Boise to London Heathrow Airport from £256

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 9/5. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — LHR
9 Apr — 16 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Boise to Heathrow

Enter your travel dates to find the best prices.

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 10 March 2026.

Tue 15/912:42
BOI
-
LHR
2 stops21h 58m
Scandinavian Airlines
Tue 22/910:20
LHR
-
BOI
2 stops19h 44m
Scandinavian Airlines
Deal found 10/3£539
Tue 8/910:23
BOI
-
LHR
2 stops25h 07m
Scandinavian Airlines
Fri 18/919:50
LHR
-
BOI
3 stops29h 45m
Scandinavian Airlines
Deal found 7/3£546
Tue 6/1010:38
BOI
-
LHR
2 stops22h 22m
Scandinavian Airlines
Tue 13/1006:40
LHR
-
BOI
3 stops23h 28m
Scandinavian Airlines
Deal found 6/3£549
Mon 17/815:30
BOI
-
LHR
2 stops41h 30m
Scandinavian Airlines
Tue 25/806:40
LHR
-
BOI
2 stops23h 24m
Scandinavian Airlines
Deal found 6/3£552
Tue 22/912:42
BOI
-
LHR
2 stops22h 48m
Scandinavian Airlines
Mon 28/918:40
LHR
-
BOI
2 stops35h 24m
Scandinavian Airlines
Deal found 6/3£574
Sat 3/1012:42
BOI
-
LHR
3 stops21h 18m
Scandinavian Airlines
Mon 12/1006:40
LHR
-
BOI
2 stops23h 28m
Scandinavian Airlines
Deal found 10/3£589
Sun 4/1012:42
BOI
-
LHR
2 stops21h 58m
Scandinavian Airlines
Mon 12/1006:40
LHR
-
BOI
2 stops23h 28m
Scandinavian Airlines
Deal found 5/3£616
Tue 28/416:38
BOI
-
LHR
2 stops20h 42m
Icelandair
Tue 5/513:05
LHR
-
BOI
2 stops16h 57m
Icelandair
Deal found 5/3£619
Mon 27/416:38
BOI
-
LHR
2 stops20h 42m
Icelandair
Mon 11/521:25
LHR
-
BOI
2 stops32h 37m
Icelandair
Deal found 5/3£620
Tue 5/516:38
BOI
-
LHR
2 stops20h 42m
Icelandair
Tue 12/513:05
LHR
-
BOI
2 stops16h 57m
Icelandair
Deal found 6/3£625
Tue 5/516:38
BOI
-
LHR
2 stops20h 42m
Icelandair
Mon 11/521:25
LHR
-
BOI
2 stops32h 37m
Icelandair
Deal found 6/3£626

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 10 March 2026.

Round-trip from

£552

One-way from

£256

Popular in

January

Cheapest in

August

Average price

£672
Scandinavian Airlines
  • Scandinavian Airlines
  • 17/8-25/8
  • 4 total stops
  • 64h 54m total
  • Boise to London
Search Deals
9/5
  • 9/5
  • 3 total stops
  • 42h 28m total
  • Boise to London
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£84 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£25 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 10 March 2026.
Use the filters below to find and compare flights from Boise to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Sun 3/5

08:28-07:25

1 stop15h 57m

London Heathrow

Fri 15/5

06:50-22:50

2 stops23h 00m

£661

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Wed 29/4

09:26-07:25

1 stop14h 59m

London Heathrow

Fri 8/5

17:40-21:17

2 stops34h 37m

£671
Fastest return journey

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Mon 27/4

14:37-09:40

1 stop12h 03m

London Heathrow

Wed 6/5

14:50-21:17

1 stop13h 27m

£683

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Wed 22/4

05:00-09:40

1 stop21h 40m

London Heathrow

Wed 29/4

06:50-23:02

2 stops23h 12m

£683

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Wed 22/4

10:41-13:05

2 stops19h 24m

London Heathrow

Wed 29/4

06:30-16:14

2 stops16h 44m

£687

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Wed 22/4

12:30-11:10

1 stop15h 40m

London Heathrow

Fri 1/5

14:50-21:17

1 stop13h 27m

£705

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Mon 27/4

13:29-12:15

1 stop15h 46m

London Heathrow

Mon 11/5

10:05-22:54

1 stop19h 49m

£720

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Mon 27/4

16:55-15:00

1 stop15h 05m

London Heathrow

Mon 4/5

11:45-21:24

2 stops16h 39m

£722

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Wed 29/4

16:55-15:00

1 stop15h 05m

London Heathrow

Wed 6/5

09:55-21:24

2 stops18h 29m

£722

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Fri 1/5

17:29-12:20

1 stop11h 51m

London Heathrow

Sat 9/5

06:50-19:33

2 stops19h 43m

£736

Flights are sorted by cheapest return flights first.

Deals found on 5/3

Showing 1-10 of 19 resultsSorted by cheapest first
1
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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 return 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 £466). Flying from Boise to London Heathrow Airport in June is currently the most expensive (average of £812). 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 for a return flight from Boise to London Heathrow Airport?

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?

    Boise Air Term. Gowen Fld (BOI) is the airport you will fly out of if you book a flight from Boise to London Heathrow. You should not have trouble finding flights to London Heathrow from Air Term. Gowen Fld; the airport handles an average of 0 outbound flights to London Heathrow per day. You should also have plenty of airline options to choose from since 0 airlines have flights from the Boise airport to London Heathrow. It is only a 3.3 mi journey to Air Term. Gowen Fld (BOI) from Boise’s city center.

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

    United Airlines and Delta can get you from Boise to London Heathrow Airport in just under 15h 57m. Your travel time can differ by up to 3h 27m. Boise and London Heathrow Airport are separated by a distance of 4829 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • 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 holiday 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 £466). Flying from Boise to London Heathrow Airport in June is currently the most expensive (average of £812). 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

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Wembley
Croydon
Northampton
Luton
Hounslow
Slough
Gatwick
Ilford
Hayes
Brentford
Colchester
Guildford
Watford
Kingston upon Thames
Chelmsford
Eastbourne
Ipswich
Swindon
Bedford

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Boise to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
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Fly with Cheapflights

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How does Cheapflights help users find flights from Boise to Heathrow?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Heathrow from Boise today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Boise to Heathrow?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Boise to Heathrow for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Boise to Heathrow with no change fees?

Certainly. Search results for flights to Heathrow from Boise shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Boise to Heathrow become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Heathrow from Boise today and book when prices fit your budget.

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