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Cheap flights from Boise to London Heathrow Airport from £250

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 15/9. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — LHR
10 Jul — 17 Jul1
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 June 2026.

Mon 9/1116:05
BOI
-
LHR
1 stop32h 20m
United Airlines
Thu 12/1106:50
LHR
-
BOI
2 stops23h 16m
United Airlines
Deal found 6/6£562
Tue 8/906:30
BOI
-
LHR
2 stops42h 15m
United Airlines
Fri 11/907:25
LHR
-
BOI
2 stops18h 54m
United Airlines
Deal found 6/6£572
Mon 9/1118:55
BOI
-
LHR
1 stop33h 20m
Brussels Airlines
Thu 12/1111:05
LHR
-
BOI
2 stops43h 01m
Brussels Airlines
Deal found 7/6£591
Mon 9/1116:21
BOI
-
LHR
1 stop12h 59m
Alaska Airlines
Thu 12/1114:45
LHR
-
BOI
1 stop30h 42m
Alaska Airlines
Deal found 6/6£632
Mon 9/1107:00
BOI
-
LHR
2 stops18h 30m
Air Canada
Thu 12/1114:30
LHR
-
BOI
2 stops40h 29m
Air Canada
Deal found 6/6£652
Sun 23/810:35
BOI
-
LHR
2 stops24h 05m
Scandinavian Airlines
Tue 1/906:40
LHR
-
BOI
2 stops19h 08m
Scandinavian Airlines
Deal found 6/6£654
Sun 6/1208:20
BOI
-
LHR
1 stop19h 55m
United Airlines
Thu 10/1206:35
LHR
-
BOI
2 stops19h 41m
United Airlines
Deal found 9/6£655
Tue 29/913:06
BOI
-
LHR
1 stop14h 54m
Delta
Wed 7/1006:30
LHR
-
BOI
2 stops17h 19m
Delta
Deal found 7/6£656
Wed 16/911:10
BOI
-
LHR
2 stops19h 05m
Delta
Wed 30/906:30
LHR
-
BOI
2 stops19h 10m
Delta
Deal found 9/6£658
Tue 15/910:35
BOI
-
LHR
2 stops24h 05m
Scandinavian Airlines
Mon 28/919:50
LHR
-
BOI
3 stops29h 50m
Scandinavian Airlines
Deal found 9/6£660

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 June 2026.

Round-trip from

£562

One-way from

£250

Popular in

January

Cheapest in

August

Average price

£1,097
United Airlines
  • United Airlines
  • 9/11-12/11
  • 3 total stops
  • 55h 36m total
  • Boise to London
Search Deals
Virgin Atlantic
  • Virgin Atlantic
  • 15/9
  • 2 total stops
  • 17h 09m total
  • Boise to London
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£62 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£24 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 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 June 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
Fastest return journey

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Sun 6/12

13:00-12:20

1 stop16h 20m

London Heathrow

Thu 10/12

14:45-22:47

1 stop15h 02m

£662

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 15/9

10:35-16:25

3 stops22h 50m

London Heathrow

Mon 28/9

19:50-18:40

3 stops29h 50m

£663

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Sun 1/11

14:43-09:40

1 stop11h 57m

London Heathrow

Sat 14/11

06:50-23:06

2 stops23h 16m

£692

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 15/9

16:00-17:35

1 stop18h 35m

London Heathrow

Mon 28/9

09:55-22:25

2 stops19h 30m

£693

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Sun 4/10

14:44-09:40

1 stop11h 56m

London Heathrow

Mon 12/10

14:05-17:43

2 stops34h 38m

£698

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Mon 10/8

15:29-15:35

1 stop17h 06m

London Heathrow

Thu 20/8

06:30-17:19

2 stops17h 49m

£701

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Sun 16/8

11:42-15:05

1 stop20h 23m

London Heathrow

Thu 20/8

17:00-23:44

1 stop13h 44m

£722

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Sat 3/10

14:08-15:05

1 stop17h 57m

London Heathrow

Mon 12/10

17:00-23:58

1 stop13h 58m

£737

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Mon 17/8

11:12-10:00

1 stop15h 48m

London Heathrow

Sun 23/8

11:45-22:30

2 stops17h 45m

£738
Cheapest one-way

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 15/9

13:06-13:15

2 stops17h 09m

£250

Flights are sorted by cheapest return flights first.

Deals found on 9/6

Showing 1-10 of 17 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, August is the cheapest month in which you can book a flight from Boise to London Heathrow Airport (average of £544). Flying from Boise to London Heathrow Airport in January is currently the most expensive (average of £1,112). 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?

    Alaska Airlines, Scandinavian Airlines, and United Airlines can get you from Boise to London Heathrow Airport in just under 11h 57m. Your travel time can differ by up to 10h 53m. 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, August is the cheapest month in which you can book a flight from Boise to London Heathrow Airport (average of £544). Flying from Boise to London Heathrow Airport in January is currently the most expensive (average of £1,112). 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
Hounslow
Milton Keynes
Wembley
Luton
Gatwick
Slough
Ilford
Croydon
Hayes
Brentford
Colchester
Northampton
Kingston upon Thames
Eastbourne
Watford
Swindon
Ipswich
Poole
Guildford
Romford

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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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