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Cheap flights from London to Boise from £373

LON — BOI
11 Oct — 18 Oct1
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

Mon 21/919:30 -
2 stops34h 04m
Tue 6/1010:34 -
2 stops24h 06m
Deal found 8/9£678
Wed 30/917:00 -
1 stop23h 56m
Fri 4/1213:00 -
1 stop16h 20m
Deal found 7/9£732
Sat 21/1114:45 -
1 stop16h 14m
Sat 28/1121:59 -
1 stop31h 21m
Deal found 7/9£739
Sat 21/1114:30 -
2 stops40h 03m
Sat 28/1106:30 -
2 stops19h 00m
Deal found 11/9£760
Sat 21/1114:30 -
2 stops40h 03m
Sat 28/1112:31 -
1 stop12h 24m
Deal found 10/9£760
Sat 21/1107:40 -
2 stops22h 11m
Sat 28/1112:31 -
1 stop12h 24m
Deal found 7/9£763
Wed 30/907:30 -
2 stops23h 29m
Fri 4/1216:24 -
2 stops38h 06m
Deal found 7/9£776
Mon 14/918:40 -
2 stops31h 00m
Tue 22/912:17 -
2 stops22h 23m
Deal found 8/9£795
Tue 15/909:55 -
1 stop20h 05m
Thu 24/918:47 -
1 stop15h 48m
Deal found 8/9£814
Thu 17/915:40 -
2 stops37h 58m
Tue 22/916:20 -
2 stops15h 20m
Deal found 8/9£864
Mon 21/1210:25 -
2 stops16h 40m
Sun 3/106:31 -
2 stops29h 54m
Deal found 9/9£877
Wed 16/1220:15 -
2 stops30h 50m
Wed 30/1220:45 -
2 stops39h 40m
Deal found 9/9£985

Find flight deals from London to Boise

Round-trip from

£673

One-way from

£373

Popular in

December

Cheapest in

January

Average price

£684
Alaska Airlines
  • Alaska Airlines
  • 4/3-8/3
  • 2 total stops
  • 47h 46m total
  • London to Boise
Search Deals
United Airlines
  • United Airlines
  • 3/11-31/12
  • 1 total stop
  • 18h 10m total
  • London to Boise
Search Deals
High demand for flights, 2% 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.

Fly from

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Route

Depart

Return

Price

Cheapest return flight

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Tue 3/11

10:05-21:15

1 stop18h 10m

Boise Air Term. Gowen Fld

Wed 31/12

00:00-08:00

Nonstop0h 00m

£373

LondonBoise

LGW London Gatwick - BOI Boise Air Term. Gowen Fld

LGWBOI

London Gatwick

Tue 3/11

09:35-13:30

2 stops34h 55m

Boise Air Term. Gowen Fld

Wed 31/12

00:00-08:00

Nonstop0h 00m

£373

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Tue 3/11

10:20-22:58

2 stops19h 38m

Boise Air Term. Gowen Fld

Wed 31/12

00:00-08:00

Nonstop0h 00m

£418

LondonBoise

LCY London City - BOI Boise Air Term. Gowen Fld

LCYBOI

London City

Tue 3/11

09:15-13:54

3 stops59h 39m

Boise Air Term. Gowen Fld

Wed 31/12

00:00-08:00

Nonstop0h 00m

£441

LondonBoise

LGW London Gatwick - BOI Boise Air Term. Gowen Fld

LGWBOI

London Gatwick

Thu 22/10

06:10-13:55

3 stops38h 45m

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

Wed 6/1

06:30-16:20

2 stops16h 50m

Boise Air Term. Gowen Fld

Wed 31/12

00:00-08:00

Nonstop0h 00m

£451

LondonBoise

LGW London Gatwick - BOI Boise Air Term. Gowen Fld

LGWBOI

London Gatwick

Tue 20/10

18:35-23:59

3 stops36h 24m

Boise Air Term. Gowen Fld

Wed 31/12

00:00-08:00

Nonstop0h 00m

£456

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Tue 20/10

20:05-23:59

3 stops34h 54m

Boise Air Term. Gowen Fld

Wed 31/12

00:00-08:00

Nonstop0h 00m

£456

LondonBoise

LCY London City - BOI Boise Air Term. Gowen Fld

LCYBOI

London City

Tue 20/10

09:15-15:23

3 stops37h 08m

Boise Air Term. Gowen Fld

Wed 31/12

00:00-08:00

Nonstop0h 00m

£466

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Sat 31/10

11:55-22:57

1 stop17h 02m

Boise Air Term. Gowen Fld

Wed 31/12

00:00-08:00

Nonstop0h 00m

£467

Flights are sorted by cheapest return flights first.

Deals found on 10/9

Showing 1-10 of 36 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 £627). Flying from London to Boise in August is currently the most expensive (average of £1,102). 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 typical for this route at the moment.
London to Boise flights typically cost between £607 and £789 in March.
The cheapest return price found within the last 5 days was £673 on Alaska Airlines (4 Mar–8 Mar).

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

Denver (DEN) – chosen by Cheapflights users on 47% 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 £731.

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
12,909 reviews
Check prices

Comfort

7.8

Entertainment

7.0

Overall

7.9

Food

7.0

Boarding

8.1

Crew

8.5

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
12,909 reviews
Alaska Airlines
7.9
Good
12,909 reviews
Check prices

Comfort

7.8

Entertainment

7.0

Overall

7.9

Food

7.0

Boarding

8.1

Crew

8.5

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
10,202 reviews
Alaska Airlines
7.9
Good
12,909 reviews
Check prices

Comfort

7.8

Entertainment

7.0

Overall

7.9

Food

7.0

Boarding

8.1

Crew

8.5

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
12,909 reviews
Check prices

Comfort

7.8

Entertainment

7.0

Overall

7.9

Food

7.0

Boarding

8.1

Crew

8.5

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
8,218 reviews
Alaska Airlines
7.9
Good
12,909 reviews
Check prices

Comfort

7.8

Entertainment

7.0

Overall

7.9

Food

7.0

Boarding

8.1

Crew

8.5

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 (£504), United Airlines (£521), and Virgin Atlantic (£669) 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 £627). Flying from London to Boise in August is currently the most expensive (average of £1,102). 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£504Average£761FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£521Average£694FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Virgin AtlanticCheapest£669Average£862FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Alaska AirlinesCheapest£730Average£943FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights

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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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