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Cheap flights from London Heathrow Airport to Boise from £409

LHR — BOI
25 Nov — 2 Dec1
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

Thu 24/1214:45 -
1 stop14h 33m
Sat 9/108:12 -
1 stop21h 08m
Deal found 21/10£590
Thu 24/1212:20 -
1 stop14h 46m
Sun 10/112:48 -
1 stop14h 52m
Deal found 21/10£605
Thu 24/1212:20 -
1 stop14h 46m
Sat 9/105:46 -
2 stops21h 54m
Deal found 21/10£653
Tue 3/1106:40 -
3 stops23h 24m
Fri 6/1116:00 -
2 stops19h 30m
Deal found 21/10£655
Mon 7/1214:30 -
2 stops27h 38m
Mon 25/106:20 -
2 stops17h 50m
Deal found 24/10£683
Mon 7/1215:20 -
2 stops26h 48m
Sun 28/216:08 -
2 stops34h 32m
Deal found 24/10£687
Sun 8/1114:45 -
1 stop16h 04m
Sat 14/1116:16 -
1 stop13h 04m
Deal found 22/10£704
Thu 24/1214:45 -
2 stops25h 38m
Sun 10/108:57 -
2 stops20h 23m
Deal found 21/10£707
Mon 7/1214:45 -
1 stop34h 38m
Sun 28/216:00 -
1 stop13h 20m
Deal found 24/10£720
Sun 8/1114:45 -
1 stop25h 22m
Sat 21/1121:47 -
1 stop31h 33m
Deal found 22/10£723

Find flight deals from Heathrow to Boise

Round-trip from

£590

One-way from

£409

Popular in

August

Cheapest in

March

Average price

£738
Alaska Airlines
  • Alaska Airlines
  • 24/12-9/1
  • 2 total stops
  • 35h 41m total
  • London to Boise
Search Deals
7/12-31/12
  • 7/12-31/12
  • 3 total stops
  • 52h 14m total
  • London to Boise
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£59 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 October 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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Price

Cheapest return flight

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Wed 6/1

13:25-21:33

2 stops39h 08m

Boise Air Term. Gowen Fld

Wed 31/12

00:00-08:00

Nonstop0h 00m

£534

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Sun 21/3

20:35-22:20

2 stops55h 45m

Boise Air Term. Gowen Fld

Wed 31/12

00:00-08:00

Nonstop0h 00m

£557
Fastest return journey

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Wed 6/1

14:45-22:22

1 stop14h 37m

Boise Air Term. Gowen Fld

Wed 31/12

00:00-08:00

Nonstop0h 00m

£584

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Wed 7/4

14:10-23:06

1 stop15h 56m

Boise Air Term. Gowen Fld

Wed 31/12

00:00-08:00

Nonstop0h 00m

£623

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Tue 6/4

10:35-19:16

1 stop15h 41m

Boise Air Term. Gowen Fld

Wed 31/12

00:00-08:00

Nonstop0h 00m

£625

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Mon 7/12

11:35-11:08

2 stops30h 33m

Boise Air Term. Gowen Fld

Sun 28/2

14:35-20:35

2 stops23h 00m

£687

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Thu 24/12

14:45-09:23

2 stops25h 38m

Boise Air Term. Gowen Fld

Sat 9/1

08:57-12:20

2 stops20h 23m

£700

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Thu 24/12

14:45-09:23

2 stops25h 38m

Boise Air Term. Gowen Fld

Sun 10/1

08:57-12:20

2 stops20h 23m

£707

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Thu 10/12

14:45-14:19

1 stop30h 34m

Boise Air Term. Gowen Fld

Thu 24/12

17:00-12:20

1 stop12h 20m

£724

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Sat 21/11

14:45-22:12

1 stop14h 27m

Boise Air Term. Gowen Fld

Sat 28/11

08:07-12:20

1 stop21h 13m

£729

Flights are sorted by cheapest return flights first.

Deals found on 26/10

Showing 1-10 of 13 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

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 £685 and £837 in December.
The cheapest return price found within the last 5 days was £590 on Alaska Airlines (24 Dec–9 Jan).

Reviews of airlines servicing Boise

Get a feel of what it's like to fly with Alaska Airlines,Virgin Atlantic, andUnited Airlines 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
13,122 reviews
Check prices

Boarding

8.1

Crew

8.5

Comfort

7.8

Entertainment

7.0

Food

7.0

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
13,122 reviews
Alaska Airlines
7.9
Good
13,122 reviews
Check prices

Boarding

8.1

Crew

8.5

Comfort

7.8

Entertainment

7.0

Food

7.0

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
7.5
Good
697 reviews
Alaska Airlines
7.9
Good
13,122 reviews
Check prices

Boarding

8.1

Crew

8.5

Comfort

7.8

Entertainment

7.0

Food

7.0

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
7.3
Good
10,443 reviews
Alaska Airlines
7.9
Good
13,122 reviews
Check prices

Boarding

8.1

Crew

8.5

Comfort

7.8

Entertainment

7.0

Food

7.0

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
8,291 reviews
Alaska Airlines
7.9
Good
13,122 reviews
Check prices

Boarding

8.1

Crew

8.5

Comfort

7.8

Entertainment

7.0

Food

7.0

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 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 25h 38m. The time it takes to get you to your destination can typically vary by up to 4h 55m. 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 £509. Other airlines that can offer you cheap pricing are United Airlines, from £526, and Alaska Airlines, from £720. These flights start at 39% 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.

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£509Average£772FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£526Average£740FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Alaska AirlinesCheapest£720Average£874FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
Virgin AtlanticCheapest£720Average£850FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights

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