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Cheap flights from Idaho to London Heathrow Airport from £242

BOI — LHR
10 Dec — 17 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Idaho to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from Idaho to Heathrow

Wed 2/1207:55 -
2 stops28h 35m
Tue 8/1212:15 -
2 stops17h 20m
Deal found 6/11£725
Fri 4/1206:40 -
1 stop17h 10m
Fri 11/1207:30 -
2 stops22h 16m
Deal found 5/11£744
Wed 2/1208:00 -
1 stop14h 55m
Tue 8/1206:35 -
2 stops21h 55m
Deal found 6/11£746
Wed 9/1206:10 -
2 stops22h 40m
Sun 13/1213:25 -
2 stops39h 02m
Deal found 10/11£749
Fri 4/1214:48 -
2 stops22h 47m
Fri 11/1206:35 -
2 stops35h 33m
Deal found 5/11£753
Fri 4/1214:08 -
1 stop16h 27m
Fri 11/1213:35 -
1 stop13h 35m
Deal found 5/11£767
Wed 2/1206:40 -
1 stop17h 10m
Tue 8/1211:50 -
1 stop17h 56m
Deal found 6/11£767
Sun 6/1207:32 -
1 stop21h 03m
Sun 13/1211:45 -
2 stops19h 25m
Deal found 8/11£768
Sun 6/1206:15 -
2 stops16h 40m
Sun 13/1215:20 -
2 stops26h 48m
Deal found 8/11£771
Sat 5/1208:20 -
2 stops19h 30m
Sat 12/1212:15 -
2 stops16h 20m
Deal found 8/11£800
Sat 5/1216:10 -
1 stop17h 20m
Sat 12/1209:50 -
1 stop17h 34m
Deal found 5/11£804
Sat 5/1211:49 -
1 stop13h 06m
Sat 12/1213:00 -
2 stops27h 59m
Deal found 5/11£807

Find flight deals from Idaho to Heathrow

Round-trip from

£649

One-way from

£242

Popular in

January

Cheapest in

May

Average price

£846
Alaska Airlines
  • Alaska Airlines
  • 14/2-18/2
  • 2 total stops
  • 33h 57m total
  • Idaho to London
Search Deals
Iberia
  • Iberia
  • 7/2-31/12
  • 1 total stop
  • 16h 50m total
  • Idaho to London
Search Deals
Highest demand for flights based on searches. 27% potential increase in price (£259 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 15% potential price decrease (£94 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 Idaho to London Heathrow Airport that are best for you.

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Price

Cheapest return flight
Fastest return journey

BoiseLondon

BOI Boise Air Term. Gowen Fld - LHR London Heathrow

BOILHR

Boise Air Term. Gowen Fld

Thu 6/5

05:40-06:25

2 stops17h 45m

London Heathrow

Wed 31/12

00:00-16:00

Nonstop0h 00m

£286

BoiseLondon

BOI Boise Air Term. Gowen Fld - LHR London Heathrow

BOILHR

Boise Air Term. Gowen Fld

Tue 16/2

13:53-13:45

2 stops16h 52m

London Heathrow

Wed 24/2

06:30-19:17

2 stops19h 47m

£666

BoiseLondon

BOI Boise Air Term. Gowen Fld - LHR London Heathrow

BOILHR

Boise Air Term. Gowen Fld

Sun 14/2

06:05-08:05

2 stops19h 00m

London Heathrow

Thu 18/2

06:30-16:35

2 stops17h 05m

£667

BoiseLondon

BOI Boise Air Term. Gowen Fld - LHR London Heathrow

BOILHR

Boise Air Term. Gowen Fld

Wed 5/5

15:22-13:45

2 stops15h 23m

London Heathrow

Thu 13/5

11:45-20:17

2 stops15h 32m

£669

BoiseLondon

BOI Boise Air Term. Gowen Fld - LHR London Heathrow

BOILHR

Boise Air Term. Gowen Fld

Tue 2/3

16:00-21:20

3 stops22h 20m

London Heathrow

Sat 6/3

06:40-22:05

3 stops22h 25m

£702

BoiseLondon

BOI Boise Air Term. Gowen Fld - LHR London Heathrow

BOILHR

Boise Air Term. Gowen Fld

Wed 31/3

19:30-15:35

1 stop13h 05m

London Heathrow

Mon 5/4

11:45-20:17

2 stops15h 32m

£703

BoiseLondon

BOI Boise Air Term. Gowen Fld - LHR London Heathrow

BOILHR

Boise Air Term. Gowen Fld

Wed 21/4

13:15-13:45

2 stops17h 30m

London Heathrow

Sun 9/5

06:30-15:35

2 stops16h 05m

£706

BoiseLondon

BOI Boise Air Term. Gowen Fld - LHR London Heathrow

BOILHR

Boise Air Term. Gowen Fld

Mon 25/1

08:12-12:20

1 stop21h 08m

London Heathrow

Thu 28/1

14:45-23:44

1 stop15h 59m

£737

BoiseLondon

BOI Boise Air Term. Gowen Fld - LHR London Heathrow

BOILHR

Boise Air Term. Gowen Fld

Thu 15/4

13:15-13:45

2 stops17h 30m

London Heathrow

Sat 24/4

08:40-20:17

2 stops18h 37m

£744

BoiseLondon

BOI Boise Air Term. Gowen Fld - LHR London Heathrow

BOILHR

Boise Air Term. Gowen Fld

Fri 12/3

16:50-16:30

1 stop16h 40m

London Heathrow

Sun 21/3

09:50-20:30

1 stop16h 40m

£763

Flights are sorted by cheapest return flights first.

Deals found on 5/11

Sorted by cheapest first

Best time to book a flight from Idaho to Heathrow

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

Cheapflights Insights

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

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

Currently, February is the cheapest month in which you can book a flight from Idaho to London Heathrow Airport (average of £652). Flying from Idaho to London Heathrow Airport in January is currently the most expensive (average of £1,507). 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.

Related info for your journey

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

    Airlines like Delta, Scandinavian Airlines, and Virgin Atlantic fly from Idaho to London Heathrow Airport in about 13h 05m. The time it takes to get you to your destination can typically vary by up to 9h 15m. There are 4829 mi between Idaho and London Heathrow Airport. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    The most popular route from Idaho to London Heathrow Airport is Boise Air Term. Gowen Fld - London Heathrow. You may also consider Spokane - London Heathrow or Idaho Falls Fanning Field - London Heathrow.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Idaho to Heathrow 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 Idaho to London Heathrow Airport?

    Currently, February is the cheapest month in which you can book a flight from Idaho to London Heathrow Airport (average of £652). Flying from Idaho to London Heathrow Airport in January is currently the most expensive (average of £1,507). 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

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Hounslow
Luton
Wembley
Milton Keynes
Gatwick
Slough
Ilford
Hayes
Folkestone
Eastbourne
Croydon
Barnet
Northampton
Southall
Southend-on-Sea
Enfield
Brentford
Dover
Harrow
Watford

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Idaho to Heathrow

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Boston to Stansted flights
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Los Angeles to Gatwick flights
Dulles Intl to London City flights
Denver to Heathrow flights
Hobby to Heathrow flights
Los Angeles to Stansted flights
Boston to Luton flights
Los Angeles to London City flights
Philadelphia to Heathrow flights
Dulles Intl to Luton flights
San Francisco to Gatwick flights
Reagan-National to Gatwick flights
George Bush Intcntl to Heathrow flights
O'Hare Intl to Gatwick flights
Los Angeles to Luton flights
Orlando to Gatwick flights
Baltimore to Gatwick flights
San Francisco to Stansted flights
Sky Harbor Intl to Heathrow flights
LaGuardia to Stansted flights
O'Hare Intl to Stansted flights
O'Hare Intl to London City flights

Fly with Cheapflights

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

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Idaho to Heathrow. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

Cheapflights helps you find that perfect flight to Heathrow from Idaho by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Need flexible booking options for your flight to Heathrow from Idaho? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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Not ready to book yet? You can track prices for flights from Idaho to Heathrow on Cheapflights with our Price Alert feature and get notified when better prices are available.

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