Find flights
When to book
Airlines
FAQs

Cheap flights from London Heathrow Airport to Idaho from £432

LHR — BOI
14 Dec — 21 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to Idaho

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Idaho

Fri 11/1214:45 -
1 stop16h 14m
Thu 24/1214:12 -
1 stop15h 08m
Deal found 13/11£731
Thu 10/1214:45 -
1 stop16h 14m
Thu 24/1217:00 -
1 stop12h 20m
Deal found 11/11£733
Thu 10/1211:20 -
2 stops19h 39m
Thu 24/1213:12 -
1 stop14h 28m
Deal found 10/11£764
Thu 10/1207:30 -
2 stops17h 29m
Thu 24/1214:43 -
1 stop11h 57m
Deal found 11/11£813
Thu 10/1210:25 -
2 stops18h 02m
Thu 24/1210:40 -
2 stops16h 45m
Deal found 11/11£838
Mon 28/1207:50 -
2 stops22h 54m
Sun 10/116:10 -
2 stops34h 30m
Deal found 10/11£838
Fri 11/1214:30 -
2 stops27h 38m
Thu 24/1214:43 -
1 stop11h 57m
Deal found 13/11£841
Fri 11/1210:25 -
2 stops18h 02m
Thu 24/1208:05 -
2 stops15h 35m
Deal found 13/11£841
Sat 21/1120:35 -
2 stops32h 37m
Sat 28/1105:40 -
2 stops30h 50m
Deal found 10/11£861
Sun 15/1114:45 -
1 stop15h 09m
Wed 18/1113:53 -
1 stop15h 27m
Deal found 10/11£929
Tue 17/1117:55 -
2 stops47h 56m
Mon 23/1111:38 -
2 stops45h 42m
Deal found 10/11£979
Thu 17/1216:55 -
2 stops26h 06m
Tue 29/1212:31 -
1 stop13h 04m
Deal found 13/11£1,011

Find flight deals from Heathrow to Idaho

Round-trip from

£631

One-way from

£432

Popular in

August

Cheapest in

April

Average price

£740
Scandinavian Airlines
  • Scandinavian Airlines
  • 25/2-1/3
  • 4 total stops
  • 57h 05m total
  • London to Idaho
Search Deals
18/1-31/12
  • 18/1-31/12
  • 3 total stops
  • 57h 42m total
  • London to Idaho
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (£76 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£20 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2026
Search Deals

Cheapflights Fare Finder

 
Use the filters below to find and compare flights from London Heathrow Airport to Idaho 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

Wed 13/1

14:50-13:41

2 stops29h 51m

Boise Air Term. Gowen Fld

Wed 31/12

00:00-08:00

Nonstop0h 00m

£465

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Wed 6/1

18:00-23:15

2 stops36h 15m

Boise Air Term. Gowen Fld

Wed 31/12

00:00-08:00

Nonstop0h 00m

£531

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Mon 11/1

07:50-23:15

1 stop22h 25m

Boise Air Term. Gowen Fld

Wed 31/12

00:00-08:00

Nonstop0h 00m

£540

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Wed 6/1

13:35-11:55

1 stop29h 20m

Boise Air Term. Gowen Fld

Wed 31/12

00:00-08:00

Nonstop0h 00m

£550

LondonIdaho Falls

LHR London Heathrow - IDA Idaho Falls Fanning Field

LHRIDA

London Heathrow

Fri 8/1

14:50-13:19

3 stops29h 29m

Idaho Falls Fanning Field

Wed 31/12

00:00-08:00

Nonstop0h 00m

£575

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Tue 6/4

14:25-22:38

1 stop15h 13m

Boise Air Term. Gowen Fld

Wed 31/12

00:00-08:00

Nonstop0h 00m

£607

LondonBoise

LHR London Heathrow - BOI Boise Air Term. Gowen Fld

LHRBOI

London Heathrow

Fri 2/4

21:25-22:20

2 stops31h 55m

Boise Air Term. Gowen Fld

Wed 31/12

00:00-08:00

Nonstop0h 00m

£608

LondonHailey

LHR London Heathrow - SUN Hailey Sun Valley-Friedman

LHRSUN

London Heathrow

Thu 1/4

17:00-09:38

1 stop23h 38m

Hailey Sun Valley-Friedman

Wed 31/12

00:00-08:00

Nonstop0h 00m

£612

LondonHailey

LHR London Heathrow - SUN Hailey Sun Valley-Friedman

LHRSUN

London Heathrow

Wed 31/3

17:00-09:38

1 stop23h 38m

Hailey Sun Valley-Friedman

Wed 31/12

00:00-08:00

Nonstop0h 00m

£635

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

£638

Flights are sorted by cheapest return flights first.

Deals found on 12/11

Showing 1-10 of 39 resultsSorted by cheapest first
1
2
3
4

Best time to book a flight from Heathrow to Idaho

Have a flexible travel schedule? Discover the best time to fly to Idaho 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 Idaho

How much does it cost for a return flight from London Heathrow Airport to Idaho?

Airfare is below average for this route at the moment.
London Heathrow Airport to Idaho flights typically cost between £738 and £819 in February.
The cheapest return price found within the last 5 days was £631 on Scandinavian Airlines (25 Feb–1 Mar).

Reviews of airlines servicing Idaho

See what other customers who have flown with Alaska Airlines,Virgin Atlantic, andUnited Airlines from London Heathrow Airport to Idaho have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
7.9
Good
13,162 reviews
Check prices

Crew

8.5

Entertainment

7.0

Comfort

7.8

Food

7.0

Overall

7.9

Boarding

8.1

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
13,162 reviews
Alaska Airlines
7.9
Good
13,162 reviews
Check prices

Crew

8.5

Entertainment

7.0

Comfort

7.8

Food

7.0

Overall

7.9

Boarding

8.1

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
698 reviews
Alaska Airlines
7.9
Good
13,162 reviews
Check prices

Crew

8.5

Entertainment

7.0

Comfort

7.8

Food

7.0

Overall

7.9

Boarding

8.1

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
10,490 reviews
Alaska Airlines
7.9
Good
13,162 reviews
Check prices

Crew

8.5

Entertainment

7.0

Comfort

7.8

Food

7.0

Overall

7.9

Boarding

8.1

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
8,295 reviews
Alaska Airlines
7.9
Good
13,162 reviews
Check prices

Crew

8.5

Entertainment

7.0

Comfort

7.8

Food

7.0

Overall

7.9

Boarding

8.1

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

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

    For as low as £731, United Airlines can have you in Idaho from London Heathrow Airport in 14h 32m. Airlines will cover a distance of 4829 mi. Both multi-stop and direct flights can be found to your destination and back.

  • What are the most popular routes from London Heathrow Airport to Idaho?

    While some choose either London Heathrow - Jackson Hole or London Heathrow - Spokane, London Heathrow - Boise Air Term. Gowen Fld is the most popular route from London Heathrow Airport to Idaho.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Heathrow to Idaho 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

Alternative routes for Heathrow to Idaho

Heathrow to John F Kennedy Intl flights
Heathrow to Newark flights
Heathrow to LaGuardia flights
Gatwick to John F Kennedy Intl flights
Gatwick to Newark flights
Stansted to John F Kennedy Intl flights
London City to John F Kennedy Intl flights
Luton to John F Kennedy Intl flights
Heathrow to Miami flights
Gatwick to LaGuardia flights
Luton to Newark flights
London City to Newark flights
Stansted to Newark flights
Heathrow to Orlando flights
Heathrow to Los Angeles flights
Heathrow to Las Vegas flights
Heathrow to Boston flights
Heathrow to Dallas/Fort Worth flights
Gatwick to Miami flights
Heathrow to San Francisco flights
Heathrow to Seattle flights
Gatwick to Orlando flights
Heathrow to Hobby flights
Stansted to Miami flights
London City to Miami flights
Heathrow to O'Hare Intl flights
Heathrow to Dulles Intl flights
Luton to Miami flights
London City to Los Angeles flights
Gatwick to Los Angeles flights
Stansted to Orlando flights
Stansted to Los Angeles flights
Heathrow to Atlanta flights
London City to Orlando flights
Heathrow to Baltimore flights
Luton to LaGuardia flights
Southend to John F Kennedy Intl flights
Heathrow to George Bush Intcntl flights
Heathrow to Tampa flights
Gatwick to Las Vegas flights
Gatwick to Boston flights
London City to Las Vegas flights
Heathrow to Ontario flights
Heathrow to Denver flights
London City to Boston flights
Luton to Los Angeles flights
Heathrow to Nashville flights
Luton to Orlando flights
Heathrow to Sky Harbor Intl flights
Stansted to Boston flights

Top 4 airlines flying from Heathrow to Idaho

AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£515Average£781FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£532Average£958FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Alaska AirlinesCheapest£728Average£885FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
Virgin AtlanticCheapest£755Average£882FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights

Fly with Cheapflights

How does Cheapflights help users find flights from Heathrow to Idaho?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Idaho from Heathrow today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Idaho?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Heathrow to Idaho.

Can Cheapflights find flights from Heathrow to Idaho with no change fees?

Certainly. Search results for flights to Idaho from Heathrow shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Heathrow to Idaho become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.