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Cheap flights from London Heathrow Airport to Boise from £425

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 25/8. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BOI
5 Aug — 12 Aug1
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
Explore the most affordable flight options available from Heathrow to Boise. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 6 July 2026.

Fri 18/906:40
LHR
-
BOI
2 stops22h 54m
Scandinavian Airlines
Fri 25/912:14
BOI
-
LHR
2 stops18h 21m
Scandinavian Airlines
Deal found 3/7£567
Thu 10/917:00
LHR
-
BOI
2 stops36h 34m
Scandinavian Airlines
Mon 14/916:00
BOI
-
LHR
2 stops41h 00m
Scandinavian Airlines
Deal found 5/7£592
Sat 19/906:40
LHR
-
BOI
2 stops19h 00m
Scandinavian Airlines
Mon 28/916:00
BOI
-
LHR
2 stops18h 40m
Scandinavian Airlines
Deal found 4/7£597
Thu 3/1207:40
LHR
-
BOI
2 stops23h 19m
United Airlines
Sun 6/1218:55
BOI
-
LHR
1 stop33h 20m
United Airlines
Deal found 1/7£650

Find flight deals from Heathrow to Boise

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Boise (BOI). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 6 July 2026.

Round-trip from

£567

One-way from

£425

Popular in

August

Cheapest in

November

Average price

£852
Scandinavian Airlines
  • Scandinavian Airlines
  • 18/9-25/9
  • 4 total stops
  • 41h 15m total
  • London to Boise
Search Deals
25/8
  • 25/8
  • 3 total stops
  • 32h 37m total
  • London to Boise
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£80 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£24 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow to Boise that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 6 July 2026.
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 - BOI

LHRBOI

London Heathrow

Fri 18/9

06:40-22:34

2 stops22h 54m

Boise Air Term. Gowen Fld

Fri 25/9

12:14-18:30

3 stops23h 16m

£593

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 18/9

14:10-15:31

2 stops32h 21m

Boise Air Term. Gowen Fld

Fri 25/9

14:44-12:25

1 stop14h 41m

£683

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Sun 6/9

10:20-22:59

2 stops19h 39m

Boise Air Term. Gowen Fld

Fri 11/9

12:14-18:30

3 stops23h 16m

£684

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Thu 1/10

21:05-18:39

3 stops28h 34m

Boise Air Term. Gowen Fld

Thu 15/10

16:00-17:40

2 stops18h 40m

£692

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Sat 19/9

06:40-18:40

3 stops19h 00m

Boise Air Term. Gowen Fld

Mon 28/9

16:00-21:35

3 stops22h 35m

£692
Fastest return journey

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Thu 10/9

10:35-19:19

1 stop15h 44m

Boise Air Term. Gowen Fld

Mon 14/9

17:40-12:25

1 stop11h 45m

£715

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Thu 3/12

10:05-21:15

1 stop18h 10m

Boise Air Term. Gowen Fld

Sun 6/12

12:29-07:55

1 stop12h 26m

£739

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Fri 21/8

07:40-22:27

2 stops21h 47m

Boise Air Term. Gowen Fld

Sun 30/8

06:30-06:30

2 stops17h 00m

£867

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Sun 6/9

06:30-22:53

2 stops23h 23m

Boise Air Term. Gowen Fld

Fri 11/9

06:30-06:30

2 stops17h 00m

£897

LondonBoise

LHR - BOI

LHRBOI

London Heathrow

Thu 16/7

17:00-22:18

2 stops36h 18m

Boise Air Term. Gowen Fld

Wed 22/7

16:00-21:40

2 stops22h 40m

£899

Flights are sorted by cheapest return flights first.

Deals found on 1/7

Showing 1-10 of 17 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
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

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, November is the cheapest month in which you can book a flight from London Heathrow Airport to Boise (average of £603). Flying from London Heathrow Airport to Boise in August is currently the most expensive (average of £1,123). 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?

Reviews of airlines servicing Boise

Get insights into the airlines that provide service to Boise. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Boise. Reviews last updated 6 July 2026.
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
12,629 reviews
Check prices

Boarding

8.1

Comfort

7.8

Food

7.0

Overall

7.9

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.
Alaska Airlines
7.9
Good
12,629 reviews
Alaska Airlines
7.9
Good
12,629 reviews
Check prices

Boarding

8.1

Comfort

7.8

Food

7.0

Overall

7.9

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.
Virgin Atlantic
7.5
Good
691 reviews
Alaska Airlines
7.9
Good
12,629 reviews
Check prices

Boarding

8.1

Comfort

7.8

Food

7.0

Overall

7.9

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.
United Airlines
7.4
Good
9,940 reviews
Alaska Airlines
7.9
Good
12,629 reviews
Check prices

Boarding

8.1

Comfort

7.8

Food

7.0

Overall

7.9

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.
Lufthansa
6.8
Okay
8,117 reviews
Alaska Airlines
7.9
Good
12,629 reviews
Check prices

Boarding

8.1

Comfort

7.8

Food

7.0

Overall

7.9

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Boise. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • 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 Scandinavian Airlines and United Airlines fly from London Heathrow Airport to Boise in about 22h 54m. The time it takes to get you to your destination can typically vary by up to 9h 27m. 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 £510. Other airlines that can offer you cheap pricing are United Airlines, from £555, and Virgin Atlantic, from £602. These flights start at 33% 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, November is the cheapest month in which you can book a flight from London Heathrow Airport to Boise (average of £603). Flying from London Heathrow Airport to Boise in August is currently the most expensive (average of £1,123). 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

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Top 4 airlines flying from Heathrow to Boise

Discover the top 4 airlines that operate flights from Heathrow to Boise. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 6 July 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£510Average£668FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£549Average£701FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Virgin AtlanticCheapest£602Average£838FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Alaska AirlinesCheapest£738Average£954FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights

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