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£247 Cheap Flights from Boise (BOI) to London (LHR)

View £247 flight on Wed, 28 Oct 2026Opens in a new window

Popular airlines from Boise Airport (BOI) to Heathrow Airport (LHR)

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Cheap Flights from Boise (BOI) to London (LHR)

Prices were available within the past 7 days and start at £247 for one-way flights and £650 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

KLM
Wed, 9 Dec - Mon, 18 Jan
BOI
Boise
LHR
London
£650 Return, found 1 day ago
£650
Return
found 1 day ago
Select KLM flight, departing Wed, 9 Dec from Boise to London, returning Mon, 18 Jan, priced at £650 found 1 day ago
KLM
Wed, 9 Dec - Mon, 18 Jan
BOI
Boise
LHR
London
£650 Return, found 1 day ago
£650
Return
found 1 day ago
Select KLM flight, departing Wed, 9 Dec from Boise to London, returning Mon, 18 Jan, priced at £650 found 1 day ago
KLM
Mon, 2 Nov - Tue, 10 Nov
BOI
Boise
LHR
London
£651 Return, just found
£651
Return
just found
Select KLM flight, departing Mon, 2 Nov from Boise to London, returning Tue, 10 Nov, priced at £651 just found
Air France
Mon, 2 Nov - Tue, 10 Nov
BOI
Boise
LHR
London
£657 Return, just found
£657
Return
just found
Select Air France flight, departing Mon, 2 Nov from Boise to London, returning Tue, 10 Nov, priced at £657 just found
Alaska Airlines
Tue, 1 Dec - Fri, 5 Feb
BOI
Boise
LHR
London
£657 Return, found 5 days ago
£657
Return
found 5 days ago
Select Alaska Airlines flight, departing Tue, 1 Dec from Boise to London, returning Fri, 5 Feb, priced at £657 found 5 days ago
Alaska Airlines
Mon, 2 Nov - Tue, 10 Nov
BOI
Boise
LHR
London
£659 Return, just found
£659
Return
just found
Select Alaska Airlines flight, departing Mon, 2 Nov from Boise to London, returning Tue, 10 Nov, priced at £659 just found
Air France
Wed, 9 Dec - Mon, 18 Jan
BOI
Boise
LHR
London
£665 Return, found 1 day ago
£665
Return
found 1 day ago
Select Air France flight, departing Wed, 9 Dec from Boise to London, returning Mon, 18 Jan, priced at £665 found 1 day ago
Air France
Wed, 9 Dec - Mon, 18 Jan
BOI
Boise
LHR
London
£668 Return, found 1 day ago
£668
Return
found 1 day ago
Select Air France flight, departing Wed, 9 Dec from Boise to London, returning Mon, 18 Jan, priced at £668 found 1 day ago
Iberia
Mon, 2 Nov - Tue, 10 Nov
BOI
Boise
LHR
London
£673 Return, just found
£673
Return
just found
Select Iberia flight, departing Mon, 2 Nov from Boise to London, returning Tue, 10 Nov, priced at £673 just found
Virgin Atlantic
Wed, 30 Sept - Tue, 20 Oct
BOI
Boise
LHR
London
£694 Return, found 1 day ago
£694
Return
found 1 day ago
Select Virgin Atlantic flight, departing Wed, 30 Sept from Boise to London, returning Tue, 20 Oct, priced at £694 found 1 day ago

Frequently asked questions

How much does a flight from Boise, ID (BOI) to London (LHR-Heathrow) cost?
You can find cheap one-way flights from £247 and cheap return flights from £650 BOI to LHR with Expedia. One-way flights typically cost between £692 and £1106, and return flights often range between £534 and £4638. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when BOI to LHR ticket fares go up or down.
What is the cheapest month to fly from Boise, ID (BOI) to London (LHR-Heathrow)?
February is typically the cheapest month to fly from Boise, ID (BOI) to London (LHR-Heathrow), with average return fares around £492. February often sees lower prices because it falls outside of peak holiday seasons, when travel demand tends to decrease. April and August are also good months to find deals on this route.
Which airlines fly direct from Boise, ID (BOI) to London (LHR-Heathrow)?
Enter BOI to LHR and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Boise, ID (BOI) to London (LHR-Heathrow)?
Skywest Air is one of the cheapest airlines offering connecting return flights from Boise, ID (BOI) to London (LHR-Heathrow), with tickets starting from around £647 for flights that can be booked for departure within the next year, with a layover in Los Angeles Intl. (LAX). These prices are per adult for economy/coach class. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.
How do I find cheap flights from Boise, ID (BOI) to London (LHR-Heathrow)?
To find a cheap flight from Boise, ID (BOI) to London (LHR-Heathrow), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Boise, ID (BOI) to London (LHR-Heathrow)?
The best time to fly from Boise, ID (BOI) to London (LHR-Heathrow) is typically February. This month offers a great balance, as it's one of the cheapest times to fly, with return flights averaging around £492. You'll also find plenty of flight options since it's a popular time to travel. February can be a good time to visit London before the spring crowds, allowing you to enjoy the city's attractions with fewer people.
How many flights per day from Boise, ID (BOI) to London (LHR-Heathrow)?
There are approximately 38 connecting flights per day from Boise, ID (BOI) to London (LHR-Heathrow). Some common connection points include Seattle - Tacoma Intl. (SEA), O'Hare Intl. (ORD), and Denver Intl. (DEN).
What is the earliest flight from Boise, ID (BOI) to London (LHR-Heathrow)?
The earliest flight from Boise, ID (BOI) to London (LHR-Heathrow) typically departs around 5:00 AM. This service is operated by United and Air Canada. This is a seasonal service active only in September. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Boise, ID (BOI) to London (LHR-Heathrow)?
You'll generally find the most flights from Boise, ID (BOI) to London (LHR-Heathrow) on a Wednesday, with around 58 flights available. This gives you a good selection of options for your journey. Major airlines on this route include Delta, United, and Alaska Airlines. Flight schedules are quite consistent throughout the week, so you'll have plenty of choices no matter which day you choose to fly.
What are the most popular departure times for flights from Boise, ID (BOI) to London (LHR-Heathrow)?
The most popular departure times for flights from Boise, ID (BOI) to London (LHR-Heathrow) are in the afternoon, from 12pm to 3pm. Many major carriers, including United, Delta and American Airlines, offer flights during this window. Many travellers prefer this time as it allows for a relaxed morning before heading to the airport, and you'll arrive in London in the evening, ready to check into your accommodation.
How long does it take to fly from Boise, ID (BOI) to London (LHR-Heathrow)?
There are no nonstop flights from Boise, ID (BOI) to London (LHR-Heathrow). For flights with one stop, you can expect the journey to take around 14 hours. Flights with two or more stops typically take a bit longer, averaging about 17 hours 48 minutes. The total distance covered is approximately 7,778 kilometers. Keep in mind that these are average travel times, and your actual flight duration can vary depending on the specific routing, layover times, and even weather conditions.
Can you fly business or first class from Boise, ID (BOI) to London (LHR-Heathrow)?
Yes, you can fly business class or first class between BOI and LHR. Airlines that offer business class service on this route include:

  • Skywest Air
  • Alaska Airlines
  • United
  • Horizon Air
  • Delta
  • American Airlines

First class cabins are available on Alaska Airlines and American Airlines.
How do I earn miles on a Boise, ID (BOI) to London (LHR-Heathrow) flight with Expedia?
It's easy to earn miles on a Boise, ID (BOI) to London (LHR-Heathrow) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for London (LHR) from Boise, ID (BOI)?
If you're planning to travel to London from BOI, you can fly directly into Heathrow (LHR). Some flights may connect through major hubs like Denver Intl. (DEN), O'Hare Intl. (ORD), or Sky Harbor Intl. (PHX) before reaching London. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Boise, ID (BOI) to London (LHR-Heathrow) at the last minute?
Typically, booking a last minute flight from Boise, ID (BOI) to London (LHR-Heathrow) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Boise, ID (BOI) to London (LHR-Heathrow) flight and hotel package?
Securing a Boise, ID (BOI) to London (LHR-Heathrow) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Boise, ID (BOI) to London (LHR-Heathrow)?
If you booked your Boise, ID (BOI) to London (LHR-Heathrow) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Boise
Destination airport
Heathrow
Airlines serving
Air Canada, Air France, Alaska Airlines, British Airways, Finnair, Iberia, Icelandair, KLM, Lufthansa, Virgin Atlantic
Return price
£649
Distance
7731 km

Book with confidence

Compare flights from Boise to London easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Boise to London. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Heathrow in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Boise to Heathrow.  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Boise (BOI) to Heathrow (LHR)

The easiest way to view the best deals on flights from Boise to London today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Boise to Heathrow start at just £650 and range up to £694.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Boise and London
  • booking your flight during December, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Boise to London flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Boise to Heathrow for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Boise to London easily and book with confidence

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