Find flights
When to book
FAQs

Cheap flights from Boise to London from £248

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 25/7. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — LON
11 May — 18 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Boise to London

Enter your travel dates to find the best prices.

Cheapest flights from Boise to London
Explore the most affordable flight options available from Boise to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 April 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 9/4£596
Sat 3/1012:42
BOI
-
LHR
2 stops20h 18m
Scandinavian Airlines
Mon 12/1006:40
LHR
-
BOI
2 stops23h 28m
Scandinavian Airlines
Deal found 6/4£611
Sat 3/1012:42
BOI
-
LHR
2 stops25h 58m
Scandinavian Airlines
Wed 14/1007:05
LHR
-
BOI
3 stops23h 03m
Scandinavian Airlines
Deal found 9/4£619
Tue 18/815:30
BOI
-
LHR
2 stops41h 30m
Scandinavian Airlines
Thu 27/819:30
LHR
-
BOI
2 stops30h 05m
Scandinavian Airlines
Deal found 11/4£627
Tue 1/905:00
BOI
-
LHR
2 stops22h 00m
United Airlines
Thu 3/909:30
LHR
-
BOI
2 stops18h 55m
United Airlines
Deal found 10/4£629
Mon 31/817:44
BOI
-
LHR
1 stop32h 56m
United Airlines
Thu 3/909:30
LHR
-
BOI
2 stops18h 55m
United Airlines
Deal found 10/4£631
Mon 28/916:05
BOI
-
LGW
2 stops16h 55m
Delta
Wed 7/1010:25
LGW
-
BOI
2 stops20h 27m
Delta
Deal found 10/4£660
Tue 18/814:44
BOI
-
LCY
2 stops20h 11m
Lufthansa
Thu 27/809:15
LCY
-
BOI
2 stops19h 10m
Lufthansa
Deal found 10/4£678
Tue 13/1014:43
BOI
-
LCY
2 stops20h 12m
Lufthansa
Wed 21/1009:15
LCY
-
BOI
2 stops19h 01m
Lufthansa
Deal found 6/4£687
Tue 13/1016:05
BOI
-
LGW
2 stops16h 55m
Delta
Wed 21/1010:25
LGW
-
BOI
2 stops20h 27m
Delta
Deal found 6/4£695
Tue 5/516:38
BOI
-
LGW
2 stops15h 02m
Icelandair
Tue 12/513:00
LGW
-
BOI
2 stops17h 02m
Icelandair
Deal found 6/4£703
Mon 28/914:43
BOI
-
LCY
2 stops20h 12m
Lufthansa
Wed 14/1009:15
LCY
-
BOI
2 stops19h 01m
Lufthansa
Deal found 6/4£710

Find flight deals from Boise to London

Discover tips and strategies to find the most affordable flight options for your journey from Boise (BOI) to London (LON). 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 11 April 2026.

Round-trip from

£611

One-way from

£248

Popular in

January

Cheapest in

October

Average price

£525
Scandinavian Airlines
  • Scandinavian Airlines
  • 3/10-12/10
  • 4 total stops
  • 43h 46m total
  • Boise to London
Search Deals
Delta
  • Delta
  • 15/9
  • 2 total stops
  • 15h 45m total
  • Boise to London
Search Deals
Highest demand for flights based on searches. 22% potential increase in price (£164 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 9% potential price decrease (£48 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Boise to London 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 11 April 2026.
Use the filters below to find and compare flights from Boise to London 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

Sat 3/10

12:42-17:00

3 stops21h 18m

London Heathrow

Mon 12/10

06:40-23:08

2 stops23h 28m

£623

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 18/8

14:44-12:25

1 stop14h 41m

London Heathrow

Thu 27/8

10:50-23:50

2 stops20h 00m

£652

BoiseLondon

BOI - LGW

BOILGW

Boise Air Term. Gowen Fld

Mon 28/9

16:05-16:00

2 stops16h 55m

London Gatwick

Wed 7/10

10:25-23:52

2 stops20h 27m

£660

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Mon 28/9

07:00-09:40

1 stop19h 40m

London Heathrow

Wed 7/10

07:30-22:22

2 stops21h 52m

£660

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Mon 28/9

13:18-10:50

1 stop14h 32m

London Heathrow

Wed 14/10

11:00-22:17

1 stop18h 17m

£671

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Sun 13/9

16:05-15:35

1 stop16h 30m

London Heathrow

Fri 25/9

11:40-23:59

1 stop19h 19m

£673

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Sun 13/9

16:05-15:35

1 stop16h 30m

London Heathrow

Fri 25/9

09:40-23:29

2 stops20h 49m

£677

BoiseLondon

BOI - LCY

BOILCY

Boise Air Term. Gowen Fld

Tue 18/8

14:44-17:55

2 stops20h 11m

London City

Thu 27/8

09:15-21:25

2 stops19h 10m

£678

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 18/8

15:30-18:30

2 stops20h 00m

London Heathrow

Thu 27/8

19:50-18:35

3 stops29h 45m

£707

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Sun 10/5

08:02-10:10

1 stop19h 08m

London Heathrow

Mon 18/5

06:50-22:50

2 stops23h 00m

£769

Flights are sorted by cheapest return flights first.

Deals found on 9/4

Showing 1-10 of 58 resultsSorted by cheapest first
1
2
3
...
6

Best time to book a flight from Boise to London

Have a flexible travel schedule? Discover the best time to fly to London 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

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

Currently, October is the cheapest month in which you can book a flight from Boise to London (average of £463). Flying from Boise to London in June is currently the most expensive (average of £807). 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?

What’s the top stopover airport for flights from Boise to London?

Share of one-stop return flights from Boise to London chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Seattle (SEA) – chosen by Cheapflights users on 70% of one-stop itineraries from Boise to London on Cheapflights.

What’s the cheapest stopover airport for flights from Boise to London?

Average return fare for one-stop flights from Boise to London, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Denver (DEN) is the most affordable one-stop option, with an average return flight price of £578.

What’s the fastest stopover option from Boise to London?

Shortest average travel time for one-stop one-way flights from Boise to London, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via Denver (DEN) have the shortest average one-way travel time for one-stop routes: 11h 49m.

Which airport typically offers the quickest stopover for flights from Boise to London?

Average stopover duration for one-stop one-way flights from Boise to London, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Denver (DEN) offer the fastest connection on this route, with an average stopover time of 1h 14m.

Related info for your journey

Find useful and relevant information for your journey from Boise to London. 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?

    For a flight from Boise to London, you will be flying from Air Term. Gowen Fld. Boise Air Term. Gowen Fld (BOI) is just 3.3 mi from the center of the city. Air Term. Gowen Fld is the only Boise airport and it handles 0 outbound flights to London per day. 0 airlines have flights to London from Boise Air Term. Gowen Fld on a regular basis.

  • How long is the flight from Boise to London?

    For as low as £652, Scandinavian Airlines can have you in London from Boise in 14h 41m. The distance from Boise to London is about 4829 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the most popular routes from Boise to London?

    When deciding which route to take from Boise to London consider Boise Air Term. Gowen Fld - London Heathrow, Boise Air Term. Gowen Fld - London Gatwick or Boise Air Term. Gowen Fld - London City as they are the most popular.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Boise to London 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?

    Currently, October is the cheapest month in which you can book a flight from Boise to London (average of £463). Flying from Boise to London in June is currently the most expensive (average of £807). 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?

Book flights to London if you plan to visit one of these locations
Milton Keynes
Wembley
Croydon
Hounslow
Gatwick
Luton
Ilford
Slough
Hayes
Brentford
Colchester
Watford
Kingston upon Thames
Romford
Eastbourne
Chelmsford
Ipswich
Southend-on-Sea
Guildford
Bishop's Stortford

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

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 London from Boise today with Cheapflights!

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

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

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from Boise to London, users can toggle the no change fees filter when performing a flight search.

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

Yes! Start tracking prices for Boise to London flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.