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BOI - LON

$329 Find Cheap Flights from Boise to London - Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$744
Typical prices: $855-$1,223
KLM
Sun 10/21Sat 10/27
BOI - LHR • 1 stop
Cheapest one-way
$329
Typical prices: $403-$647
United Airlines
Wed 4/4
BOI - LHR • 2 stops
Nonstop 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 • 18% average savings
BOI - LHR
Most popular
Insights
Insights
When to book
8 weeks
in advance
Our data shows that travelers who book at least 8 weeks in advance save around 32% compared to booking last minute.
Insights
Insights
When to travel
November
Cheapest • 28% price drop
August
Most popular
Good to know
+1
Good to know
+1
Top layover airports
San Francisco (SFO)
Cheapest • Avg $708 (round-trip)
Portland (PDX)
Shortest trip • 12h 39m (one-way)
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Insights
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We hope you love 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 round-trip flight deals from Boise to London

Wed, Oct 21 - Tue, Oct 27
KLM Logo
3:36 pm - 3:35 pmBOI  Boise Air Term. Gowen Fld-LHR London Heathrow
16h 59m1 stop Seattle/Tacoma Intl
KLM Logo
6:30 am - 5:14 pmLHR  London Heathrow-BOI Boise Air Term. Gowen Fld
16h 44m2 stops Amsterdam Schiphol Seattle/Tacoma Intl
$744KLM
Wed, Oct 21 - Tue, Oct 27
KLM Logo
3:36 pm - 3:35 pmBOI  Boise Air Term. Gowen Fld-LHR London Heathrow
16h 59m1 stop Seattle/Tacoma Intl
KLM Logo
10:55 am - 11:04 pmLHR  London Heathrow-BOI Boise Air Term. Gowen Fld
18h 09m1 stop Los Angeles
$752KLM
Tue, Mar 2 - Fri, Mar 5
United Airlines Logo
4:05 pm - 11:15 amBOI  Boise Air Term. Gowen Fld-LHR London Heathrow
36h 10m1 stop San Francisco
United Airlines Logo
6:35 am - 7:16 pmLHR  London Heathrow-BOI Boise Air Term. Gowen Fld
19h 41m2 stops Munich Franz Josef Strauss San Francisco
$821United Airlines
Tue, Mar 2 - Fri, Mar 5
United Airlines Logo
4:05 pm - 11:15 amBOI  Boise Air Term. Gowen Fld-LHR London Heathrow
36h 10m1 stop San Francisco
United Airlines Logo
6:35 am - 7:16 pmLHR  London Heathrow-BOI Boise Air Term. Gowen Fld
19h 41m2 stops Munich Franz Josef Strauss San Francisco
$822United Airlines
Sun, Feb 21 - Thu, Feb 25
Iberia Logo
12:21 pm - 12:00 pmBOI  Boise Air Term. Gowen Fld-LHR London Heathrow
16h 39m1 stop Dallas/Fort Worth
Iberia Logo
7:30 am - 10:57 pmLHR  London Heathrow-BOI Boise Air Term. Gowen Fld
22h 27m2 stops Madrid Barajas Dallas/Fort Worth
$868Iberia
Tue, Mar 2 - Fri, Mar 5
United Airlines Logo
8:20 am - 10:25 amBOI  Boise Air Term. Gowen Fld-LHR London Heathrow
19h 05m2 stops San Francisco Newark
United Airlines Logo
6:35 am - 7:16 pmLHR  London Heathrow-BOI Boise Air Term. Gowen Fld
19h 41m2 stops Munich Franz Josef Strauss San Francisco
$880United Airlines
Sun, Mar 14 - Fri, Mar 19
Delta Logo
5:40 am - 7:05 amBOI  Boise Air Term. Gowen Fld-LHR London Heathrow
19h 25m1 stop Minneapolis St Paul
Delta Logo
6:30 am - 11:52 pmLHR  London Heathrow-BOI Boise Air Term. Gowen Fld
23h 22m2 stops Amsterdam Schiphol Seattle/Tacoma Intl
$895Delta
Sun, Mar 14 - Fri, Mar 19
Delta Logo
5:40 am - 7:05 amBOI  Boise Air Term. Gowen Fld-LHR London Heathrow
19h 25m1 stop Minneapolis St Paul
Delta Logo
6:30 am - 11:52 pmLHR  London Heathrow-BOI Boise Air Term. Gowen Fld
23h 22m2 stops Amsterdam Schiphol Seattle/Tacoma Intl
$895Delta
Sun, Mar 14 - Fri, Mar 19
Delta Logo
5:40 am - 7:05 amBOI  Boise Air Term. Gowen Fld-LHR London Heathrow
19h 25m1 stop Minneapolis St Paul
Delta Logo
10:50 am - 10:41 pmLHR  London Heathrow-BOI Boise Air Term. Gowen Fld
17h 51m1 stop Atlanta Hartsfield-Jackson
$926Delta
Tue, Dec 8 - Tue, Dec 22
Virgin Atlantic Logo
5:15 am - 6:50 amBOI  Boise Air Term. Gowen Fld-LHR London Heathrow
18h 35m2 stops Minneapolis St Paul Boston Logan Intl
Virgin Atlantic Logo
11:50 am - 11:57 pmLHR  London Heathrow-BOI Boise Air Term. Gowen Fld
19h 07m2 stops San Francisco Seattle/Tacoma Intl
$990Virgin Atlantic
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 with more confidence.

How much is a round-trip flight from Boise to London?

Round-trip flights from Boise to London typically range from $855 to $1,223. The lowest price found in the past 5 days was $744, on KLM.

What is the cheapest Boise to London flight route?

Boise (BOI) to London City Airport (LCY) is the cheapest Boise to London route, averaging $824 round-trip. Other Boise to London routes average $1,094, based on KAYAK data over the past 12 months.

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

Based on deals KAYAK users found in the last 12 months, Tuesday is the cheapest day of the week to fly from Boise to London. It’s 8% cheaper than the average day, while Saturday is the most expensive, with prices 27% higher.

What’s the cheapest month to fly from Boise to London?

•November is the cheapest month to fly from Boise to London at $699 round-trip.
•June ($1,423) and July ($1,203) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 103% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from Boise to London the cheapest?

Flights from Boise to London are cheapest 8 weeks before departure. Booking in this window typically costs about 32% 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

$329
Beat the crowds with an average 8% drop in travelers.
One-way flight 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 round-trip price

Your Boise to London flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

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

    Four cabin classes are available on flights from Boise to London:

    • Economy Class
    • Premium Economy Class
    • Business Class
    • First Class

    Prices vary by airline.

  • How long is a flight from Boise to London?

    A nonstop flight from Boise to London takes 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 much should I expect to pay for a Boise to London flight?

    Round-trip flights from Boise to London range from $855 to $1,223, with an average of $968 over the past 12 months. Anything below $855 counts as a good deal.

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

    Last-minute fares on this route (booked within two weeks of departure) run 29% above the $968 route average. Book 8 weeks before departure for the lowest fares.

  • 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 $406, which is 23% below the typical average for this route.

  • What car rental options are available in London?

    Since London is served by multiple airports, car rental options and rates can vary depending on which one you fly into.
    Near London Heathrow Airport (LHR) — daily rates from around $7:

    • GREEN MOTION
    • DRIVALIA
    • Europcar
    • Alamo
    • Hertz

    Near London Gatwick Airport (LGW) — daily rates from around $8:

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

    Near London City Airport (LCY) — daily rates from around $11:

    • GREEN MOTION
    • Budget
    • Hertz
    • Avis
    • Sixt

    Near London Luton Airport (LTN) — daily rates from around $11:

    • GREEN MOTION
    • DRIVALIA
    • Alamo
    • Europcar
    • Budget

    Near London Stansted Airport (STN) — daily rates from around $10:

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

  • 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 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

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

    Yes. Flexible dates can save you up to 28% on flights from Boise to London. Tuesday is the cheapest departure day at $897 round-trip on average, while Saturday is the most expensive at $1,236, a difference of $339.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

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

    Flying via Portland (PDX) gives the shortest average 1-stop total travel time at 12h 39m, compared with 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 popular places can I visit in London?

    Some of the most popular sights in London are Hyde Park and Buckingham Palace. These are among the most viewed places in London on KAYAK.

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 and avoid flying on Saturday. On this route, Tuesday flights average $897, about $339 less than Saturday fares (27% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 8 weeks before you fly. On this route, that window historically saves about 32% 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 $699 round-trip in that month - typically $724 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

    • Good Hotel London
    • Aloft London Excel
    • Novotel London Excel

    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 rental

Car rentals in London
Hotels in London
Vacations in London