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$309+ Cheap flights from Boise (BOI) to London (LON)

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 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — LON
Mar 5 — Mar 121
Thu 3/5
Thu 3/12
1 adult, Economy
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Cheap flight deals from Boise to London

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 February 3, 2026.

This United Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/410:53 am
BOI
-
LHR
1 stop13h 32m
United Airlines
Wed 3/116:50 am
LHR
-
BOI
2 stops22h 06m
United Airlines
Deal found 2/2$635
This Travelocity deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/46:25 am
BOI
-
LHR
2 stops17h 45m
Multiple Airlines
Wed 3/117:40 am
LHR
-
BOI
2 stops19h 49m
Multiple Airlines
Deal found 2/2$638
This Delta deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/45:50 am
BOI
-
LHR
2 stops19h 15m
Delta
Wed 3/118:40 am
LHR
-
BOI
2 stops18h 29m
Delta
Deal found 2/1$640
This Virgin Atlantic deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/43:44 pm
BOI
-
LHR
1 stop16h 51m
Virgin Atlantic
Fri 5/158:40 am
LHR
-
BOI
2 stops18h 35m
Virgin Atlantic
Deal found 2/2$651
This United Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/225:00 am
BOI
-
LHR
2 stops18h 30m
United Airlines
Tue 5/58:45 am
LHR
-
BOI
2 stops19h 32m
United Airlines
Deal found 2/2$655
This Delta deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/51:52 pm
BOI
-
LHR
2 stops16h 13m
Delta
Tue 5/126:30 am
LHR
-
BOI
2 stops17h 49m
Delta
Deal found 2/2$656
This Delta deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/193:44 pm
BOI
-
LHR
1 stop13h 26m
Delta
Tue 4/2811:30 am
LHR
-
BOI
2 stops17h 54m
Delta
Deal found 2/2$658
This Delta deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/53:44 pm
BOI
-
LGW
2 stops17h 16m
Delta
Tue 5/1210:35 am
LGW
-
BOI
2 stops18h 38m
Delta
Deal found 1/31$660
This Expedia deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/51:53 pm
BOI
-
LHR
1 stop15h 17m
Iberia
Mon 5/117:25 pm
LHR
-
BOI
2 stops32h 42m
Iberia
Deal found 1/31$660
This United Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/197:07 am
BOI
-
LHR
1 stop24h 23m
United Airlines
Thu 3/2611:35 am
LHR
-
BOI
1 stop17h 08m
United Airlines
Deal found 2/3$662
This Virgin Atlantic deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/151:52 pm
BOI
-
LHR
2 stops16h 13m
Virgin Atlantic
Wed 4/2211:30 am
LHR
-
BOI
2 stops16h 54m
Virgin Atlantic
Deal found 2/2$663
This KLM deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/191:45 pm
BOI
-
LHR
1 stop14h 45m
KLM
Thu 3/2611:20 am
LHR
-
BOI
1 stop16h 15m
KLM
Deal found 2/1$664

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 February 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$635
(United Airlines)

One-way from

$309
(Mytrip)

Popular in

June

Cheapest in

October

Average price

$819
Provider with most accurate pricing for Boise Air Term. Gowen Fld-London (LON) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-London (LON) flights.
Search Deals
From Boise Air Term. Gowen Fld to London (LON)
Search Deals
One-way flight from Boise Air Term. Gowen Fld to London (LON)
Search Deals
Highest demand for flights based on searches. 22% potential increase in price ($265 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($45 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize 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 2,558,603 searches. Data last updated February 3, 2026.
Use the filters below to find and compare flights from Boise to London that are best for you.

Fly from

Boise

Fly to

London

Route

Depart

Return

Price

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Sun 4/12

2:37 pm-9:40 am

1 stop12h 03m

London Heathrow

Wed 4/22

6:50 am-10:57 pm

2 stops23h 07m

$651

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Mon 4/13

2:18 pm-11:20 am

1 stop14h 02m

London Heathrow

Wed 4/22

6:30 am-4:14 pm

2 stops16h 44m

$651

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Mon 5/4

3:44 pm-3:35 pm

1 stop16h 51m

London Heathrow

Fri 5/15

8:40 am-8:15 pm

2 stops18h 35m

$651

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 5/5

4:20 pm-2:10 pm

1 stop14h 50m

London Heathrow

Tue 5/12

10:50 am-10:37 pm

2 stops18h 47m

$651

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Wed 4/29

7:05 am-3:00 pm

1 stop24h 55m

London Heathrow

Wed 5/6

6:30 am-4:14 pm

2 stops16h 44m

$651

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Mon 5/4

1:52 pm-3:35 pm

1 stop18h 43m

London Heathrow

Thu 5/14

11:45 am-10:13 pm

2 stops17h 28m

$651

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 4/14

5:40 am-12:10 pm

1 stop23h 30m

London Heathrow

Fri 4/24

9:55 am-9:24 pm

2 stops18h 29m

$651

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Wed 5/6

8:22 am-11:10 am

1 stop19h 48m

London Heathrow

Wed 5/13

10:50 am-10:37 pm

2 stops18h 47m

$651

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 5/5

8:34 am-9:20 am

2 stops17h 46m

London Heathrow

Wed 5/13

10:50 am-10:37 pm

2 stops18h 47m

$656

BoiseLondon

BOI - LGW

BOILGW

Boise Air Term. Gowen Fld

Tue 5/5

3:44 pm-4:00 pm

2 stops17h 16m

London Gatwick

Tue 5/12

10:35 am-10:13 pm

2 stops18h 38m

$660

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

Showing 1-10 of 58 results
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Compare providers for flights from Boise to London

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boise to London in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
OvagoPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Boise-London flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boise-London flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boise-London flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boise-London flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boise-London flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 round-trip 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

How far ahead should I book a flight from Boise to London?

Use this chart to determine the optimal time to book a round-trip flight from Boise to London. Price data was last updated on January 30, 2026.

The price you pay for your flight from Boise to London may vary depending on when you book. For the best chance of a lower fare, look to book 82 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 $622). Flying from Boise to London in June is currently the most expensive (average of $1,085). 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.

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to London. Reviews last updated February 3, 2026.
Peruse reviews from past customers who have flown with Delta, Virgin Atlantic, and United Airlines from Boise to London to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,132 reviews

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Crew

8.5

Food

7.2

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,132 reviews
Delta
7.9
Good
8,132 reviews

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Crew

8.5

Food

7.2

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Virgin Atlantic
7.5
Good
678 reviews
Delta
7.9
Good
8,132 reviews

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Crew

8.5

Food

7.2

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,231 reviews
Delta
7.9
Good
8,132 reviews

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Crew

8.5

Food

7.2

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

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?

    Boise Air Term. Gowen Fld (BOI) is the airport you will fly out of if you book a flight from Boise to London. You should not have trouble finding flights to London from Air Term. Gowen Fld; the airport handles an average of 0 outbound flights to London per day. You should also have plenty of airline options to choose from since 5 airlines have flights from the Boise airport to London. 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?

    For as low as $635, Lufthansa can have you in London from Boise in 13h 32m. Airlines will cover a distance of 4829 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Boise to London round-trip?

    KLM, at $577, was found to be the cheapest airline from Boise to London.Alternate airlines to your destination round-trip include Virgin Atlantic and United Airlines. KLM is priced at 36% lower than the current average price of a flight leaving 3 months from now.

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

    The most popular flight routes from Boise to London are Boise Air Term. Gowen Fld - London Heathrow, Boise Air Term. Gowen Fld - London Gatwick and Boise Air Term. Gowen Fld - London City.

  • 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 vacation 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 $622). Flying from Boise to London in June is currently the most expensive (average of $1,085). 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

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Ilford
Hounslow
Croydon
Southend-on-Sea
Harrow
Eastleigh
Gatwick
Dartford
Dover
Winchester
Orpington
Watford
Hayes
Borehamwood
Aylesbury
Chipping Norton
Horley
Kingston upon Thames
Eastbourne
Sutton

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Top 5 airlines flying from Boise to London

Discover the top 5 airlines that operate flights from Boise to London. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$577Average$774FlexibilityNo cancel feeOn-time75%
Virgin AtlanticCheapest$604Average$931FlexibilityNo cancel feeOn-time72%
United AirlinesCheapest$639Average$877FlexibilityNo cancel feeOn-time69%
DeltaCheapest$701Average$1,006FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$703Average$874FlexibilityNo cancel feeOn-time71%

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