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Cheap flights from London to Boise from £420

LON — BOI
28 Oct — 4 Nov1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from London to Boise

Enter your travel dates to find the best prices.

Cheapest flights from London to Boise

Fri 23/1011:40 -
1 stop19h 19m
Thu 26/1114:00 -
1 stop13h 40m
Deal found 23/9£624
Wed 11/1106:30 -
2 stops18h 33m
Wed 18/1113:53 -
1 stop13h 47m
Deal found 26/9£636
Mon 26/1006:30 -
2 stops21h 36m
Mon 2/1106:37 -
2 stops22h 13m
Deal found 25/9£638
Sat 31/1008:55 -
2 stops17h 11m
Tue 3/1113:53 -
1 stop13h 47m
Deal found 23/9£645
Mon 9/1106:30 -
2 stops24h 19m
Mon 16/1113:53 -
1 stop13h 47m
Deal found 25/9£651
Wed 28/1007:40 -
2 stops21h 53m
Wed 4/1106:30 -
1 stop20h 10m
Deal found 25/9£686
Mon 9/1107:50 -
2 stops22h 43m
Sun 17/116:05 -
1 stop32h 20m
Deal found 27/9£687
Mon 9/1115:20 -
2 stops32h 22m
Mon 8/206:10 -
1 stop18h 15m
Deal found 24/9£689
Mon 9/1110:25 -
2 stops18h 55m
Sun 17/112:48 -
2 stops19h 12m
Deal found 27/9£769
Mon 2/1110:25 -
2 stops18h 55m
Mon 16/1113:53 -
2 stops18h 07m
Deal found 27/9£784
Mon 9/1110:25 -
2 stops18h 55m
Mon 8/215:01 -
2 stops21h 24m
Deal found 24/9£793
Tue 20/1010:20 -
2 stops18h 46m
Mon 23/1113:02 -
2 stops18h 58m
Deal found 23/9£797

Find flight deals from London to Boise

Round-trip from

£624

One-way from

£420

Popular in

December

Cheapest in

January

Average price

£770
23/10-26/11
  • 23/10-26/11
  • 2 total stops
  • 32h 59m total
  • London to Boise
Search Deals
10/11-31/12
  • 10/11-31/12
  • 3 total stops
  • 59h 54m total
  • London to Boise
Search Deals
High demand for flights, 3% potential price rise
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£23 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2026
Search Deals

Cheapflights Fare Finder

 
Use the filters below to find and compare flights from London to Boise that are best for you.

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Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Wed 16/12

12:10-18:01

3 stops36h 51m

Boise Air Term. Gowen Fld

Wed 31/12

00:00-08:00

Nonstop0h 00m

£439

LondonBoise

LGW London Gatwick - BOI Boise Air Term. Gowen Fld

LGWBOI

London Gatwick

Wed 16/12

11:15-18:01

3 stops37h 46m

Boise Air Term. Gowen Fld

Wed 31/12

00:00-08:00

Nonstop0h 00m

£451

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Sun 8/11

18:00-18:30

3 stops55h 30m

Boise Air Term. Gowen Fld

Wed 31/12

00:00-08:00

Nonstop0h 00m

£454

LondonBoise

LGW London Gatwick - BOI Boise Air Term. Gowen Fld

LGWBOI

London Gatwick

Sun 8/11

09:35-21:33

3 stops42h 58m

Boise Air Term. Gowen Fld

Wed 31/12

00:00-08:00

Nonstop0h 00m

£458

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Mon 9/11

14:50-15:28

2 stops31h 38m

Boise Air Term. Gowen Fld

Wed 31/12

00:00-08:00

Nonstop0h 00m

£476

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Mon 9/11

11:35-21:32

1 stop16h 57m

Boise Air Term. Gowen Fld

Wed 31/12

00:00-08:00

Nonstop0h 00m

£494

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Sun 8/11

16:40-21:15

2 stops59h 35m

Boise Air Term. Gowen Fld

Wed 31/12

00:00-08:00

Nonstop0h 00m

£499

LondonBoise

LGW London Gatwick - BOI Boise Air Term. Gowen Fld

LGWBOI

London Gatwick

Sat 7/11

18:40-12:57

3 stops49h 17m

Boise Air Term. Gowen Fld

Wed 31/12

00:00-08:00

Nonstop0h 00m

£501

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Thu 17/12

09:50-18:01

3 stops39h 11m

Boise Air Term. Gowen Fld

Wed 31/12

00:00-08:00

Nonstop0h 00m

£504
Fastest return journey

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Tue 10/11

13:45-21:15

1 stop14h 30m

Boise Air Term. Gowen Fld

Wed 31/12

00:00-08:00

Nonstop0h 00m

£508

Flights are sorted by cheapest return flights first.

Deals found on 23/9

Showing 1-10 of 40 resultsSorted by cheapest first
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Best time to book a flight from London to Boise

Have a flexible travel schedule? Discover the best time to fly to Boise from London with our price prediction graph.
Estimated return price

Cheapflights Insights

Everything you need to know about your flight from London to Boise

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

Currently, April is the cheapest month in which you can book a flight from London to Boise (average of £639). Flying from London to Boise in August is currently the most expensive (average of £1,125). 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 London to Boise?

Airfare is below average for this route at the moment.
London to Boise flights typically cost between £675 and £865 in October.
The cheapest return price found within the last 5 days was £624 on Multiple Airlines (23 Oct–26 Nov).

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

Denver (DEN) – chosen by Cheapflights users on 46% of one-stop itineraries from London to Boise on Cheapflights.

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

Denver (DEN) is the most affordable one-stop option, with an average return flight price of £747.

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

Flights via Salt Lake City (SLC) have the shortest average one-way travel time for one-stop routes: 12h 53m.

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

Flights via Denver (DEN) offer the fastest connection on this route, with an average stopover time of 1h 21m.

Reviews of airlines servicing Boise

See what other customers who have flown with Alaska Airlines,United Airlines, andVirgin Atlantic from London to Boise have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
7.9
Good
12,985 reviews
Check prices

Boarding

8.1

Food

7.0

Crew

8.5

Entertainment

7.0

Comfort

7.8

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.
Alaska Airlines
7.9
Good
12,985 reviews
Alaska Airlines
7.9
Good
12,985 reviews
Check prices

Boarding

8.1

Food

7.0

Crew

8.5

Entertainment

7.0

Comfort

7.8

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.
United Airlines
7.4
Good
10,246 reviews
Alaska Airlines
7.9
Good
12,985 reviews
Check prices

Boarding

8.1

Food

7.0

Crew

8.5

Entertainment

7.0

Comfort

7.8

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.
Virgin Atlantic
7.4
Good
694 reviews
Alaska Airlines
7.9
Good
12,985 reviews
Check prices

Boarding

8.1

Food

7.0

Crew

8.5

Entertainment

7.0

Comfort

7.8

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.
Lufthansa
6.8
Okay
8,247 reviews
Alaska Airlines
7.9
Good
12,985 reviews
Check prices

Boarding

8.1

Food

7.0

Crew

8.5

Entertainment

7.0

Comfort

7.8

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.

Related info for your journey

  • What airport do you fly into for flights to Boise from London?

    Located just 3.3 mi from the city center, Boise Air Term. Gowen Fld is the airport most travelers will use when flying to Boise from London. Booking flights from London to Air Term. Gowen Fld (BOI) should be relatively easy as there are 0 daily inbound flights from London from 4 different airlines.

  • How long is the flight from London to Boise?

    Departing from London to Boise will take you 16h 14m. London and Boise are separated by a distance of 4829 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    According to our current data, Lufthansa (£515), United Airlines (£532), and Virgin Atlantic (£728) offers the cheapest pricing from London to Boise. Lufthansa is priced at 38% lower than the current average price of a flight leaving 3 months from now.

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

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

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

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

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

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

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

    Yes. Cheapflights offers flight deals from London to Boise 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 London to Boise?

    Currently, April is the cheapest month in which you can book a flight from London to Boise (average of £639). Flying from London to Boise in August is currently the most expensive (average of £1,125). 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

Browse thousands of different options on Cheapflights for your next trip

Top 4 airlines flying from London to Boise

AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£515Average£777FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£532Average£715FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Virgin AtlanticCheapest£728Average£880FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Alaska AirlinesCheapest£745Average£961FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights

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Deals for London to Boise flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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Users can book flights with no change fees policies with our dedicated filters. Book flights from London to Boise flexibly with Cheapflights today.

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Yes, Cheapflights offers price alerts on London to Boise flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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