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Cheap flights from London Heathrow Airport to Boise from £372

LHR — BOI
10 Oct — 17 Oct1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to Boise

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow 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£731
Sat 21/1114:45 -
1 stop16h 14m
Sat 28/1121:59 -
1 stop31h 21m
Deal found 7/9£738
Sat 21/1114:30 -
2 stops40h 03m
Sat 28/1106:30 -
2 stops19h 00m
Deal found 6/9£757
Sat 21/1114:30 -
2 stops40h 03m
Sat 28/1112:31 -
1 stop12h 24m
Deal found 6/9£758
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£775
Mon 21/1214:45 -
1 stop16h 14m
Tue 5/106:37 -
1 stop22h 43m
Deal found 6/9£786
Mon 14/918:40 -
2 stops31h 00m
Tue 22/912:17 -
2 stops22h 23m
Deal found 8/9£794

Find flight deals from Heathrow to Boise

Round-trip from

£672

One-way from

£372

Popular in

August

Cheapest in

March

Average price

£754
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
Highest demand for flights based on searches. 11% potential increase in price (£79 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£22 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 Heathrow Airport to Boise that are best for you.

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Route

Depart

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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

£372

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

£417

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
Fastest return journey

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

£466

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Wed 6/1

11:10-13:30

3 stops33h 20m

Boise Air Term. Gowen Fld

Wed 31/12

00:00-08:00

Nonstop0h 00m

£502

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Wed 6/1

13:25-13:30

2 stops31h 05m

Boise Air Term. Gowen Fld

Wed 31/12

00:00-08:00

Nonstop0h 00m

£508

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Sat 21/11

14:45-23:59

1 stop16h 14m

Boise Air Term. Gowen Fld

Sat 28/11

21:59-12:20

1 stop31h 21m

£738

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Sat 21/11

14:30-23:33

2 stops40h 03m

Boise Air Term. Gowen Fld

Sat 28/11

12:31-07:55

1 stop12h 24m

£760

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Wed 30/9

07:30-23:59

2 stops23h 29m

Boise Air Term. Gowen Fld

Fri 4/12

08:00-07:55

1 stop16h 55m

£775

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Tue 22/12

14:45-22:25

1 stop14h 40m

Boise Air Term. Gowen Fld

Tue 5/1

06:37-12:20

1 stop22h 43m

£786

Flights are sorted by cheapest return flights first.

Deals found on 10/9

Showing 1-10 of 15 resultsSorted by cheapest first
1
2

Best time to book a flight from Heathrow to Boise

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

Cheapflights Insights

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

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

Currently, March is the cheapest month in which you can book a flight from London Heathrow Airport to Boise (average of £631). Flying from London Heathrow Airport to Boise in August is currently the most expensive (average of £1,128). 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 Heathrow Airport to Boise?

Airfare is below average for this route at the moment.

London Heathrow Airport to Boise flights typically cost between £738 and £775 in March.
The cheapest return price found within the last 5 days was £672 on Alaska Airlines (4 Mar–8 Mar).

Reviews of airlines servicing Boise

Get a feel of what it's like to fly with Alaska Airlines,United Airlines, andVirgin Atlantic from London Heathrow Airport to Boise by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
7.9
Good
12,906 reviews
Check prices

Entertainment

7.0

Boarding

8.1

Comfort

7.8

Food

7.0

Overall

7.9

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
12,906 reviews
Alaska Airlines
7.9
Good
12,906 reviews
Check prices

Entertainment

7.0

Boarding

8.1

Comfort

7.8

Food

7.0

Overall

7.9

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
10,194 reviews
Alaska Airlines
7.9
Good
12,906 reviews
Check prices

Entertainment

7.0

Boarding

8.1

Comfort

7.8

Food

7.0

Overall

7.9

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
12,906 reviews
Check prices

Entertainment

7.0

Boarding

8.1

Comfort

7.8

Food

7.0

Overall

7.9

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
8,213 reviews
Alaska Airlines
7.9
Good
12,906 reviews
Check prices

Entertainment

7.0

Boarding

8.1

Comfort

7.8

Food

7.0

Overall

7.9

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 Heathrow?

    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 Heathrow. Booking flights from London Heathrow to Air Term. Gowen Fld (BOI) should be relatively easy as there are 0 daily inbound flights from London Heathrow from 4 different airlines.

  • How long is the flight from London Heathrow Airport to Boise?

    Airlines like Alaska Airlines and United Airlines fly from London Heathrow Airport to Boise in about 16h 14m. The time it takes to get you to your destination can typically vary by up to 7h 15m. London Heathrow Airport 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 Heathrow Airport to Boise round-trip?

    Cheapflights users have booked flights from London Heathrow Airport to Boise round-trip from £504. Other airlines that can offer you cheap pricing are United Airlines, from £520, and Virgin Atlantic, from £668. These flights start at 37% lower than the current average price 3 months from now.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Heathrow 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 Heathrow Airport to Boise?

    Currently, March is the cheapest month in which you can book a flight from London Heathrow Airport to Boise (average of £631). Flying from London Heathrow Airport to Boise in August is currently the most expensive (average of £1,128). 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 Heathrow to Boise

AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£504Average£760FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£520Average£693FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Virgin AtlanticCheapest£668Average£861FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Alaska AirlinesCheapest£729Average£942FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights

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