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Cheap flights from London Heathrow Airport to Boise from £375

LHR — BOI
30 Sep — 7 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

Tue 13/1014:30 -
1 stop15h 27m
Tue 20/1007:20 -
1 stop19h 55m
Deal found 28/8£596
Thu 15/1017:00 -
1 stop13h 59m
Tue 27/1016:18 -
1 stop14h 02m
Deal found 28/8£639
Sun 11/1011:40 -
1 stop19h 19m
Sun 18/1016:18 -
1 stop16h 17m
Deal found 27/8£666
Mon 16/1107:30 -
2 stops22h 21m
Mon 30/1114:51 -
1 stop11h 49m
Deal found 26/8£669
Sat 21/1111:35 -
1 stop16h 57m
Sat 28/1114:51 -
1 stop11h 49m
Deal found 26/8£677
Sat 21/1111:10 -
2 stops18h 49m
Fri 27/1114:51 -
1 stop11h 49m
Deal found 26/8£686
Fri 20/1107:30 -
2 stops17h 33m
Sun 29/1110:34 -
1 stop16h 06m
Deal found 26/8£687
Mon 28/913:05 -
2 stops30h 53m
Wed 14/1017:30 -
1 stop12h 05m
Deal found 27/8£689
Tue 29/915:05 -
2 stops28h 58m
Wed 14/1010:30 -
2 stops19h 50m
Deal found 27/8£690
Fri 20/1109:30 -
2 stops18h 45m
Fri 27/1106:30 -
2 stops16h 25m
Deal found 26/8£694

Find flight deals from Heathrow to Boise

Round-trip from

£596

One-way from

£375

Popular in

August

Cheapest in

March

Average price

£1,127
13/10-20/10
  • 13/10-20/10
  • 2 total stops
  • 35h 22m total
  • London to Boise
Search Deals
20/10
  • 20/10
  • 3 total stops
  • 49h 33m total
  • London to Boise
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£76 potential increase over avg. return price).
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 August 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.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Sat 21/11

06:35-21:15

2 stops21h 40m

Boise Air Term. Gowen Fld

Sat 28/11

17:44-09:40

1 stop32h 56m

£686

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Fri 20/11

09:30-21:15

2 stops18h 45m

Boise Air Term. Gowen Fld

Fri 27/11

06:30-05:55

2 stops16h 25m

£694
Fastest return journey

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Fri 20/11

13:35-22:51

1 stop16h 16m

Boise Air Term. Gowen Fld

Sun 29/11

14:51-09:40

1 stop11h 49m

£711

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Thu 15/10

17:00-12:28

2 stops26h 28m

Boise Air Term. Gowen Fld

Tue 27/10

07:20-12:20

2 stops23h 00m

£751

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Sat 10/10

10:50-22:33

2 stops18h 43m

Boise Air Term. Gowen Fld

Sat 17/10

08:08-08:35

2 stops17h 27m

£753

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Sun 27/9

06:50-22:58

2 stops23h 08m

Boise Air Term. Gowen Fld

Sun 4/10

14:51-06:45

2 stops32h 54m

£763

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Sat 21/11

07:30-21:34

2 stops21h 04m

Boise Air Term. Gowen Fld

Sat 28/11

12:31-12:50

2 stops17h 19m

£770
Cheapest one-way

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Tue 20/10

08:20-22:57

1 stop21h 37m

£447

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Wed 21/10

13:50-22:01

3 stops39h 11m

£468
Fastest single journey

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Wed 6/1

11:35-19:35

1 stop15h 00m

£512

Flights are sorted by cheapest return flights first.

Deals found on 29/8

Showing 1-10 of 16 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 £1,127). 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 £677 and £766 in October.
The cheapest return price found within the last 5 days was £596 on Multiple Airlines (13 Oct–20 Oct).

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
12,863 reviews
Check prices

Comfort

7.8

Crew

8.5

Boarding

8.1

Overall

7.9

Entertainment

7.0

Food

7.0

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
12,863 reviews
Alaska Airlines
7.9
Good
12,863 reviews
Check prices

Comfort

7.8

Crew

8.5

Boarding

8.1

Overall

7.9

Entertainment

7.0

Food

7.0

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
10,149 reviews
Alaska Airlines
7.9
Good
12,863 reviews
Check prices

Comfort

7.8

Crew

8.5

Boarding

8.1

Overall

7.9

Entertainment

7.0

Food

7.0

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
695 reviews
Alaska Airlines
7.9
Good
12,863 reviews
Check prices

Comfort

7.8

Crew

8.5

Boarding

8.1

Overall

7.9

Entertainment

7.0

Food

7.0

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
8,228 reviews
Alaska Airlines
7.9
Good
12,863 reviews
Check prices

Comfort

7.8

Crew

8.5

Boarding

8.1

Overall

7.9

Entertainment

7.0

Food

7.0

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 United Airlines and Alaska Airlines fly from London Heathrow Airport to Boise in about 21h 40m. The time it takes to get you to your destination can typically vary by up to 4h 48m. 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 £712. 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 £1,127). 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£712Average£841FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Alaska AirlinesCheapest£729Average£941FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights

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