BOI - LON

£247 Find Cheap Flights from Boise to London – Compare and Save

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Everything you should know

Cheapest return flight
£536
Typical prices: £587-£852
Iberia
Sat 27/10Sat 3/11
BOI - LHR • 1 stop
Cheapest one-way flight
£247
Typical prices: £322-£467
Virgin Atlantic
Sat 10/3
BOI - LHR • 2 stops
Direct flights
Not available
There are currently no direct flights between Boise and London. You'll need to take a connecting flight to reach the destination.
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Top routes
BOI - LCY
Cheapest • 17% average savings
BOI - LHR
Most popular
Insights
Insights
When to book
10 weeks
in advance
Our data shows that travellers who book at least 10 weeks in advance save around 33% compared to booking last minute.
Insights
Insights
When to travel
November
Cheapest • 21% price drop
August
Most popular
Good to know
+1
Good to know
+1
Top stopover airports
San Francisco (SFO)
Cheapest • Avg £524 (return)
Portland (PDX)
Shortest trip • 12h 39m (one-way)
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Insights
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We hope you enjoy your trip to London!
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Flight Deals

Cheap Flights from Boise to London (BOI-LON)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Boise to London

Tue, 27 Oct - Tue, 3 Nov
Iberia Logo
07:00 - 08:15BOI  Boise Air Term. Gowen Fld-LHR London Heathrow
19h 15m1 stop Dallas/Fort Worth
Iberia Logo
06:05 - 22:42LHR  London Heathrow-BOI Boise Air Term. Gowen Fld
23h 37m2 stops Madrid Barajas Dallas/Fort Worth
£536Iberia
Mon, 22 Feb - Wed, 3 Mar
Iberia Logo
07:00 - 12:00BOI  Boise Air Term. Gowen Fld-LHR London Heathrow
22h 00m1 stop Dallas/Fort Worth
Iberia Logo
07:35 - 21:30LHR  London Heathrow-BOI Boise Air Term. Gowen Fld
20h 55m2 stops Madrid Barajas Dallas/Fort Worth
£540Iberia
Tue, 27 Oct - Tue, 3 Nov
Iberia Logo
07:00 - 10:35BOI  Boise Air Term. Gowen Fld-LHR London Heathrow
21h 35m2 stops Dallas/Fort Worth Madrid Barajas
Iberia Logo
07:30 - 22:42LHR  London Heathrow-BOI Boise Air Term. Gowen Fld
22h 12m2 stops Madrid Barajas Dallas/Fort Worth
£543Iberia
Wed, 28 Oct - Wed, 4 Nov
United Airlines Logo
14:51 - 09:40BOI  Boise Air Term. Gowen Fld-LHR London Heathrow
12h 49m1 stop Denver Intl
United Airlines Logo
13:00 - 11:31LHR  London Heathrow-BOI Boise Air Term. Gowen Fld
29h 31m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl
£545United Airlines
Mon, 22 Feb - Wed, 3 Mar
Iberia Logo
07:00 - 13:30BOI  Boise Air Term. Gowen Fld-LHR London Heathrow
23h 30m2 stops Dallas/Fort Worth Madrid Barajas
Iberia Logo
06:15 - 21:30LHR  London Heathrow-BOI Boise Air Term. Gowen Fld
22h 15m2 stops Madrid Barajas Dallas/Fort Worth
£547Iberia
Tue, 29 Sep - Wed, 7 Oct
United Airlines Logo
08:15 - 11:10BOI  Boise Air Term. Gowen Fld-LHR London Heathrow
19h 55m1 stop San Francisco
United Airlines Logo
07:25 - 19:29LHR  London Heathrow-BOI Boise Air Term. Gowen Fld
19h 04m2 stops Munich Franz Josef Strauss San Francisco
£550United Airlines
Wed, 30 Sep - Wed, 7 Oct
United Airlines Logo
05:00 - 06:30BOI  Boise Air Term. Gowen Fld-LHR London Heathrow
18h 30m2 stops Denver Intl Montreal Pierre Elliott Trudeau Intl
United Airlines Logo
07:25 - 19:29LHR  London Heathrow-BOI Boise Air Term. Gowen Fld
19h 04m2 stops Munich Franz Josef Strauss San Francisco
£553United Airlines
Tue, 29 Sep - Wed, 7 Oct
United Airlines Logo
06:25 - 07:15BOI  Boise Air Term. Gowen Fld-LHR London Heathrow
17h 50m2 stops Denver Intl Newark
United Airlines Logo
07:25 - 19:29LHR  London Heathrow-BOI Boise Air Term. Gowen Fld
19h 04m2 stops Munich Franz Josef Strauss San Francisco
£554United Airlines
Wed, 7 Oct - Tue, 13 Oct
Delta Logo
16:00 - 15:00BOI  Boise Air Term. Gowen Fld-LHR London Heathrow
16h 00m1 stop Los Angeles
Delta Logo
06:30 - 18:33LHR  London Heathrow-BOI Boise Air Term. Gowen Fld
19h 03m2 stops Amsterdam Schiphol Seattle/Tacoma Intl
£555Delta
Sun, 6 Dec - Tue, 8 Dec
Alaska Airlines Logo
09:53 - 12:20BOI  Boise Air Term. Gowen Fld-LHR London Heathrow
19h 27m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
14:45 - 22:47LHR  London Heathrow-BOI Boise Air Term. Gowen Fld
15h 02m1 stop Seattle/Tacoma Intl
£556Alaska Airlines
Booking Insights

Price, demand, and travel trends for Boise to London flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights from Boise to London with more confidence.

How much is a return flight from Boise to London?

Return flights from Boise to London start at £536. Prices are below average for this route right now, with typical return fares ranging from £587 to £852. The lowest price found in the past 5 days was £536 on Iberia.

What is the cheapest Boise to London flight route?

Boise (BOI) to London City Airport (LCY) is the cheapest Boise to London route, averaging £611 return. Other Boise to London routes average £800, based on KAYAK data over the past 12 months.

What's the cheapest day of the week to fly from Boise to London?

Tuesday is the cheapest day of the week to fly from Boise to London and is 16% cheaper than the average day. Thursday is the most expensive day with flight prices 10% higher than average. Based on deals found by KAYAK users in the last 12 months.

What is the cheapest month to fly from Boise to London?

  • November is the cheapest month to fly from Boise to London at £550 return.
  • June (£1,054) and July (£891) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 91% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are prices from Boise to London the cheapest?

Flights from Boise to London are cheapest 10 weeks before departure. Booking in this window typically costs about 33% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

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Key details for Boise to London flights

Low season

December

Cheapest flight

£247
Best time to beat the crowds (9% less expensive on average)
Most popular time to fly (12% more expensive on average)
Flights from Boise to London Heathrow Airport

When to book flights from Boise to London

Are your dates flexible? Find out the best times to travel from Boise to London based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

Your Boise to London flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines, and booking questions.

  • Which airports can I use when flying from Boise to London?

    Flights from Boise to London usually depart from Boise Air Term. Gowen Fld (BOI) and may arrive at several airports in London area, including London City (LCY), London Gatwick (LGW), London Heathrow (LHR), London Luton (LTN), London Southend (SEN) and London Stansted (STN).

  • Which cabin classes can I book on flights from Boise to London?

    Only Economy class is available on flights from Boise to London.

  • Which airports do connecting flights from Boise to London pass through?

    One-stop flights from Boise to London most commonly connect through:

    • Seattle/Tacoma Intl (SEA) – 54% of one-stop connections
    • Denver Intl (DEN) – 33% of one-stop connections
    • Dallas/Fort Worth (DFW) – 3% of one-stop connections
    • Los Angeles (LAX) – 3% of one-stop connections

    Seattle/Tacoma Intl (SEA) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from Boise to London?

    Yes. Being flexible with your travel dates can save you up to 24% on the Boise to London route. Tuesday is the cheapest departure day at £587 return on average, while Thursday is the most expensive at £767, a difference of £180. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What popular places can I visit in London?

    Some of the most popular sights in London are London Victoria Station, London Euston Railway Station, and Hyde Park. These are among the most viewed places in London on KAYAK.

  • How expensive are last-minute Boise to London flights?

    Last-minute fares on this route (booked within 2 weeks of departure) run 30% above the route average of £695. Book 10 weeks before departure for the lowest fares.

  • How long is a flight from Boise to London?

    A direct flight from Boise to London takes 0h 00m, covering 4,838 miles.

  • Do I need a passport to fly from Boise to London?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How are flight prices from Boise to London looking right now?

    One-way fares from Boise to London are currently lower than usual. Average one-way flight prices are about £285, which is 28% below the typical average for this route.

  • How much time can I save by choosing a different stopover airport from Boise to London?

    Flying via Portland (PDX) gives the shortest average 1-stop total travel time of 12h 39m, compared to 12h 48m via Denver Intl (DEN) and 13h 37m via Salt Lake City (SLC).

  • What is the time difference between Boise and London?

    London is 7 hours ahead of Boise (British Time vs Mountain Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car hire options are available in London?

    Since London is served by multiple airports, car hire options and rates can vary depending on which one you fly into.
    Near London Heathrow Airport (LHR) – daily rates from around £5:

    • GREEN MOTION
    • DRIVALIA
    • Europcar
    • Alamo
    • Hertz

    Near London Gatwick Airport (LGW) – daily rates from around £6:

    • GREEN MOTION
    • DRIVALIA
    • U-Save
    • Europcar
    • Alamo

    Near London City Airport (LCY) – daily rates from around £8:

    • GREEN MOTION
    • Budget
    • Hertz
    • Avis
    • Sixt

    Near London Luton Airport (LTN) – daily rates from around £8:

    • GREEN MOTION
    • DRIVALIA
    • Alamo
    • Europcar
    • Budget

    Near London Stansted Airport (STN) – daily rates from around £7:

    • GREEN MOTION
    • DRIVALIA
    • Europcar
    • Alamo
    • U-Save

  • How much should I expect to pay for a Boise to London flight?

    Return flights from Boise to London range from £587 to £852, with an average of £695 over the past 12 months. Anything below £587 counts as a good deal.

Your guide to booking Boise to London flights

Get tips on when to book, when to fly, and what to know before your trip.
  • If your dates are flexible, aim for a Tuesday departure instead of Thursday. On this route, Tuesday flights average £587 – about £180 less than Thursday (23% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 10 weeks before you fly. On this route, that window historically saves about 33% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Boise to London trip for November. Fares historically average £550 return in that month – typically £505 less than the most expensive month, which is June (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, hotels close to the airport you're flying into can be a convenient option.

    Near London City Airport

    · Aloft London Excel
    · Good Hotel London
    · Crowne Plaza London Docklands By IHG

    Near London Heathrow Airport

    · Hilton London Heathrow Airport

    Near London Gatwick Airport

    · Premier Inn London Gatwick Airport

More options for your flight from Boise to London

Complete your trip to London with a hotel stay or car hire

Car hire in London
Hotels in London
Holidays in London