What are the cheapest airlines to fly from Idaho to London Heathrow Airport one-way?

One-way options have recently been found by users for as low as £353 on WestJet. Other airlines that offer cheap prices include Scandinavian Airlines from £365 and Finnair from £382 one-way.

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 Jackson Hole - London Heathrow.

How far in advance should I book a flight from Idaho to London Heathrow Airport?

To save on the cost of your flight from Idaho to London Heathrow Airport, book at least 29 days before your planned departure. Booking around this time can save you about 93% on the cost of this flight compared to booking a flight leaving this week. We have found prices from £575 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as £1,002.

What is the cheapest month to fly from Idaho to London Heathrow Airport?

April is one of the best times of the year to fly to London Heathrow Airport from Idaho. Prices for April average £736 per person but you can even find prices for as low as £508. The most expensive prices can be found in the month of June. Opting for a April flight can save you 57% on your journey compared to booking in June

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.

£353+ Flights from Idaho to London Heathrow Airport

Cheap flight deals from Idaho to Heathrow

Round-trip from	£528
One-way from	£353
Popular in	June
Cheapest in	April
Average price	£623

Air Canada
15/4-22/4
4 total stops
64h 34m total
Idaho to London

Search Deals

WestJet
22/4
2 total stops
14h 55m total
Idaho to London

Search Deals

Highest demand for flights based on searches. 28% potential increase in price (£233 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease (£31 potential savings vs. average return price).

Search Deals

Average for round-trip flights in February 2025

Search Deals

Find flight deals from Idaho to Heathrow

Cheapest flights from Idaho to Heathrow
Explore the most affordable flight options available from Idaho to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 February 2025.

Tue 15/412:06BOI - LHR

2 stops35h 29mAir Canada

Tue 22/414:05LHR - BOI

2 stops29h 05mAir Canada

Deal found 20/2£528

Tue 15/414:10BOI - LHR

1 stop14h 15mVirgin Atlantic

Tue 22/412:25LHR - BOI

1 stop18h 34mVirgin Atlantic

Deal found 20/2£534

Tue 15/412:06BOI - LHR

1 stop13h 14mUnited Airlines

Tue 22/407:30LHR - BOI

2 stops17h 22mUnited Airlines

Deal found 20/2£538

Wed 2/406:15GEG - LHR

1 stop23h 55mUnited Airlines

Wed 9/409:30LHR - GEG

2 stops19h 56mUnited Airlines

Deal found 21/2£545

Tue 23/911:00BOI - LHR

1 stop17h 25mDelta

Wed 1/1011:30LHR - BOI

2 stops18h 46mDelta

Deal found 20/2£550

Mon 3/307:15BOI - LHR

2 stops25h 45mScandinavian Airlines

Tue 11/318:40LHR - BOI

2 stops34h 10mScandinavian Airlines

Deal found 20/2£565

Wed 2/405:00BOI - LHR

3 stops18h 35mMultiple Airlines

Wed 9/408:30LHR - BOI

2 stops20h 13mMultiple Airlines

Deal found 20/2£570

Mon 7/410:50IDA - LHR

1 stop15h 50mUnited Airlines

Mon 14/409:30LHR - IDA

2 stops34h 58mUnited Airlines

Deal found 20/2£578

Sun 6/407:17LWS - LHR

1 stop22h 58mKLM

Sun 13/420:55LHR - LWS

2 stops33h 43mKLM

Deal found 20/2£585

Fri 21/311:17GEG - LHR

1 stop16h 53mDelta

Fri 28/315:50LHR - GEG

1 stop13h 59mDelta

Deal found 19/2£594

Thu 27/307:00GEG - LHR

1 stop19h 45mVirgin Atlantic

Fri 4/418:00LHR - GEG

1 stop14h 01mVirgin Atlantic

Deal found 19/2£597

Fri 28/311:00JAC - LHR

2 stops17h 15mUnited Airlines

Mon 7/413:30LHR - JAC

2 stops38h 22mUnited Airlines

Deal found 19/2£602

Best flights from Idaho to Heathrow
Discover carefully curated flight deals from Idaho to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 February 2025.

Tue 15/412:06BOI - LHR

2 stops35h 29mAir Canada

Tue 22/414:05LHR - BOI

2 stops29h 05mAir Canada

Deal found 20/2£528

Tue 15/414:10BOI - LHR

1 stop14h 15mVirgin Atlantic

Tue 22/412:25LHR - BOI

1 stop18h 34mVirgin Atlantic

Deal found 20/2£534

Tue 15/412:06BOI - LHR

1 stop13h 14mUnited Airlines

Tue 22/407:30LHR - BOI

2 stops17h 22mUnited Airlines

Deal found 20/2£538

Mon 3/307:15BOI - LHR

2 stops25h 45mScandinavian Airlines

Tue 11/318:40LHR - BOI

2 stops34h 10mScandinavian Airlines

Deal found 20/2£565

Wed 2/405:00BOI - LHR

3 stops18h 35mMultiple Airlines

Wed 9/408:30LHR - BOI

2 stops20h 13mMultiple Airlines

Deal found 20/2£570

Sun 6/407:17LWS - LHR

1 stop22h 58mKLM

Sun 13/420:55LHR - LWS

2 stops33h 43mKLM

Deal found 20/2£585

Fri 25/414:10BOI - LHR

1 stop14h 15mDelta

Thu 1/509:55LHR - BOI

2 stops17h 37mDelta

Deal found 19/2£585

Sat 22/306:00GEG - LHR

1 stop18h 05mAir France

Sat 29/310:10LHR - GEG

1 stop13h 11mAir France

Deal found 20/2£634

Fri 2/513:23BOI - LHR

1 stop14h 27mFinnair

Thu 15/512:00LHR - BOI

1 stop16h 59mFinnair

Deal found 20/2£638

Fri 2/515:21GEG - LHR

1 stop15h 19mAmerican Airlines

Sun 18/508:20LHR - GEG

1 stop20h 53mAmerican Airlines

Deal found 20/2£686

Wed 13/821:30BOI - LHR

2 stops15h 50mIcelandair

Mon 18/821:25LHR - BOI

2 stops31h 55mIcelandair

Deal found 19/2£740

Sun 23/307:05BOI - LHR

1 stop18h 15mIberia

Sat 29/318:45LHR - BOI

2 stops33h 10mIberia

Deal found 19/2£1,006

Last-minute flights from Idaho to Heathrow
Discover last-minute flight deals from Idaho to Heathrow. Data last updated 21 February 2025 and is based on user searches.

Sat 22/208:15BOI - LHR

2 stops24h 45mMultiple Airlines

Sun 2/319:30LHR - BOI

3 stops35h 29mMultiple Airlines

Deal found 19/2£839

Sun 2/308:00BOI - LHR

2 stops19h 50mMultiple Airlines

Tue 18/312:15LHR - BOI

2 stops16h 26mMultiple Airlines

Deal found 20/2£1,017

Sun 2/309:25BOI - LHR

1 stop20h 15mKLM

Tue 18/306:30LHR - BOI

2 stops17h 54mKLM

Deal found 20/2£1,176

Sun 2/307:05BOI - LHR

1 stop16h 15mFinnair

Tue 18/309:25LHR - BOI

1 stop18h 30mFinnair

Deal found 20/2£1,184

Mon 3/307:15BOI - LHR

2 stops25h 45mScandinavian Airlines

Tue 11/318:40LHR - BOI

2 stops34h 10mScandinavian Airlines

Deal found 20/2£565

Thu 6/314:35IDA - LHR

2 stops18h 15mUnited Airlines

Fri 14/315:00LHR - IDA

2 stops36h 06mUnited Airlines

Deal found 20/2£593

Fri 21/311:17GEG - LHR

1 stop16h 53mDelta

Fri 28/315:50LHR - GEG

1 stop13h 59mDelta

Deal found 19/2£594

Sat 22/318:30GEG - LHR

2 stops29h 10mUnited Airlines

Mon 31/309:30LHR - GEG

2 stops35h 08mUnited Airlines

Deal found 21/2£580

Sat 22/306:00GEG - LHR

1 stop18h 05mAir France

Sat 29/310:10LHR - GEG

1 stop13h 11mAir France

Deal found 20/2£634

Sat 22/315:30IDA - LHR

1 stop12h 30mVirgin Atlantic

Sat 29/310:10LHR - IDA

1 stop18h 23mVirgin Atlantic

Deal found 20/2£899

Thu 27/307:00GEG - LHR

1 stop19h 45mVirgin Atlantic

Fri 4/418:00LHR - GEG

1 stop14h 01mVirgin Atlantic

Deal found 19/2£597

Fri 28/311:00JAC - LHR

2 stops17h 15mUnited Airlines

Mon 7/413:30LHR - JAC

2 stops38h 22mUnited Airlines

Deal found 19/2£602

One-way flights from Idaho to Heathrow
Search for one-way flight options from Idaho to Heathrow. Find affordable one-way fares based on user searches. Data last updated 21 February 2025.

Tue 22/414:10BOI - LHR

2 stops14h 55mWestJet

Deal found 21/2£353

Mon 26/511:15GEG - LHR

2 stops22h 25mScandinavian Airlines

Deal found 21/2£365

Tue 22/407:05BOI - LHR

1 stop18h 55mFinnair

Deal found 21/2£382

Tue 22/410:36BOI - LHR

3 stops18h 14mAir Canada

Deal found 21/2£387

Tue 3/609:30GEG - LHR

3 stops20h 25mMultiple Airlines

Deal found 20/2£395

Mon 26/511:15GEG - LHR

2 stops16h 50mWestJet

Deal found 20/2£433

Mon 19/507:35BOI - LHR

1 stop19h 50mUnited Airlines

Deal found 20/2£440

Sun 8/611:26BOI - LHR

3 stops21h 34mMultiple Airlines

Deal found 20/2£536

Tue 3/615:05GEG - LHR

1 stop12h 20mVirgin Atlantic

Deal found 20/2£688

Mon 26/515:05GEG - LHR

1 stop15h 10mKLM

Deal found 21/2£700

Find flights from Idaho to Heathrow within your budget

Fly from

Fly to

Route

Depart

Return

Price

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 15/4

12:06-06:35

2 stops35h 29m

London Heathrow

Tue 22/4

14:05-12:10

2 stops29h 05m

£528

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 15/4

14:10-11:25

1 stop14h 15m

London Heathrow

Tue 22/4

12:25-23:59

1 stop18h 34m

£534

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 15/4

12:06-08:20

1 stop13h 14m

London Heathrow

Tue 22/4

07:30-17:52

2 stops17h 22m

£538

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Wed 2/4

06:15-14:10

1 stop23h 55m

London Heathrow

Wed 9/4

09:30-21:26

2 stops19h 56m

£545

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Mon 3/3

07:15-16:00

2 stops25h 45m

London Heathrow

Tue 11/3

18:40-22:50

2 stops34h 10m

£565

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Wed 2/4

05:00-06:35

3 stops18h 35m

London Heathrow

Wed 9/4

08:30-21:43

2 stops20h 13m

£570

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Mon 7/4

10:50-09:40

1 stop15h 50m

London Heathrow

Mon 14/4

09:30-13:28

2 stops34h 58m

£578

LewistonLondon

LWS - LHR

LWSLHR

Lewiston Nez Perce Rgnl

Sun 6/4

07:17-14:15

1 stop22h 58m

London Heathrow

Sun 13/4

20:55-22:38

2 stops33h 43m

£585

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Fri 25/4

14:10-11:25

1 stop14h 15m

London Heathrow

Thu 1/5

09:55-20:32

2 stops17h 37m

£585

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Fri 21/3

11:17-11:10

1 stop16h 53m

London Heathrow

Fri 28/3

15:50-22:49

1 stop13h 59m

£594

Flights are sorted by cheapest return flights first.

Deals found on 21/2

Showing 1-10 of 40 results

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

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.

Travel insights for flights from Idaho to Heathrow

Get recent, data-driven insights about flights from Idaho to Heathrow including ideal travel times, pricing trends, and more.

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

Currently, January is the cheapest month in which you can book a flight from Idaho to London Heathrow Airport (average of £112). Flying from Idaho to London Heathrow Airport in August is currently the most expensive (average of £163). 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.

What is the cheapest time of day to fly from ID to LHR?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Idaho to London Heathrow Airport as you normally would.

Rainfall in Heathrow by month

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

Temperature in Heathrow by month

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

Reviews of airlines servicing Heathrow

Get a feel of what it's like to fly with Delta, Alaska Airlines and KLM from Idaho to London by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very Good

8,213 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta

8.0

Very Good

8,213 reviews

Delta

8.0

Very Good

8,213 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Alaska Airlines

8.0

Very Good

9,697 reviews

Delta

8.0

Very Good

8,213 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM

7.8

Good

1,331 reviews

Delta

8.0

Very Good

8,213 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Finnair

7.6

Good

1,273 reviews

Delta

8.0

Very Good

8,213 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Virgin Atlantic

7.5

Good

654 reviews

Delta

8.0

Very Good

8,213 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

What are the cheapest airlines to fly from Idaho to London Heathrow Airport one-way?
One-way options have recently been found by users for as low as £353 on WestJet. Other airlines that offer cheap prices include Scandinavian Airlines from £365 and Finnair from £382 one-way.
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 Jackson Hole - 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, January is the cheapest month in which you can book a flight from Idaho to London Heathrow Airport (average of £112). Flying from Idaho to London Heathrow Airport in August is currently the most expensive (average of £163). 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

Deal

Hounslow

Milton Keynes

Croydon

Gatwick

Slough

Luton

Ilford

Hayes

Eastbourne

Swindon

Northampton

Wembley

Southend-on-Sea

Ipswich

Winchester

Maidstone

Crawley

Southall

Watford

Browse thousands of different options on Cheapflights for your next trip

Top airline flying from Idaho to Heathrow

Airline	Cheapest	Average	Flexibility	On-time
Virgin Atlantic	Cheapest£481	Average£950	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic 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.

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

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

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

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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.

Cheap flights from Idaho to London Heathrow Airport from £353

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 22/4. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Idaho to Heathrow

Keep the following information in mind while searching for Idaho to Heathrow flight deals. Data was last updated 21 February 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Idaho to Heathrow

Cheapest flights from Idaho to HeathrowExplore the most affordable flight options available from Idaho to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 February 2025.

Explore the most affordable flight options available from Idaho to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 February 2025.

Find flights from Idaho to Heathrow within your budget

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.

Travel insights for flights from Idaho to Heathrow

Get recent, data-driven insights about flights from Idaho to Heathrow including ideal travel times, pricing trends, and more.

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

What is the cheapest time of day to fly from ID to LHR?

Find hourly flight availability from Idaho to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 21 February 2025.

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

Reviews of airlines servicing Heathrow

Get a feel of what it's like to fly with Delta, Alaska Airlines and KLM from Idaho to London by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

What are the cheapest airlines to fly from Idaho to London Heathrow Airport one-way?

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

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

How can I find direct flights from Idaho to Heathrow?

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

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

Travelling to a place near Idaho?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Idaho to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Idaho to Heathrow

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

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

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

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

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Book with Flexibility

Travel Smart

Cheapest flights from Idaho to Heathrow
Explore the most affordable flight options available from Idaho to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 February 2025.