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Idaho Falls

$969+ Cheap flights from Heathrow (LHR) to Idaho Falls (IDA)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/24. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — IDA
Dec 18 — Dec 251
Thu 12/18
Thu 12/25
1 adult, Economy
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Cheap flight deals from Heathrow to Idaho Falls

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Idaho Falls (IDA). 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 November 18, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$977
(American Airlines)

Popular in

May

Cheapest in

November

Average price

$853
Provider with most accurate pricing for London Heathrow-Idaho Falls Fanning Field flight deals.
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Provider most trusted by Cheapflights users for London Heathrow-Idaho Falls Fanning Field flights.
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From London Heathrow to Idaho Falls Fanning Field
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Highest demand for flights based on searches. 14% potential increase in price ($168 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($33 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find flight deals from Heathrow to Idaho Falls

Cheapest flights from Heathrow to Idaho Falls
Explore the most affordable flight options available from Heathrow to Idaho Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 18, 2025.

This United Airlines deal was found by Cheapflights users on 11/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/16:00 pmLHR - IDA
2 stops46h 47mUnited Airlines
Mon 12/82:45 pmIDA - LHR
1 stop11h 55mUnited Airlines
Deal found 11/16$1,224
This Justfly.com deal was found by Cheapflights users on 11/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/178:35 pmLHR - IDA
2 stops34h 24mMultiple Airlines
Sun 11/236:00 amIDA - LHR
2 stops21h 50mMultiple Airlines
Deal found 11/16$1,382
This Finnair deal was found by Cheapflights users on 11/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/14:30 pmLHR - IDA
1 stop27h 57mMultiple Airlines
Mon 12/81:58 pmIDA - LHR
1 stop13h 02mMultiple Airlines
Deal found 11/17$1,488
This Expedia deal was found by Cheapflights users on 11/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/15:25 pmLHR - IDA
2 stops30h 02mMultiple Airlines
Thu 12/46:00 amIDA - LHR
2 stops17h 50mMultiple Airlines
Deal found 11/17$1,519
This ChecknFly deal was found by Cheapflights users on 11/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure ChecknFly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/14:20 pmLHR - IDA
2 stops28h 14mLufthansa
Mon 12/810:58 amIDA - LHR
1 stop15h 42mLufthansa
Deal found 11/17$1,540
This Kiwi.com deal was found by Cheapflights users on 11/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/302:50 pmLHR - IDA
2 stops40h 09mMultiple Airlines
Thu 12/46:05 amIDA - LHR
1 stop21h 25mMultiple Airlines
Deal found 11/17$1,553
This Justfly.com deal was found by Cheapflights users on 11/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/15:05 pmLHR - IDA
2 stops36h 16mVirgin Atlantic
Mon 12/86:00 amIDA - LHR
2 stops18h 50mVirgin Atlantic
Deal found 11/17$1,637

Cheapflights Fare Finder

 
Customize your flight search to find flights from Heathrow to Idaho Falls 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 2,558,603 searches. Data last updated November 18, 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Idaho Falls that are best for you.

Fly from

Heathrow

Fly to

Idaho Falls

Route

Depart

Return

Price

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Fri 4/24

8:20 am-9:56 pm

2 stops20h 36m

Idaho Falls Fanning Field

Tue 4/28

1:45 pm-6:15 am

2 stops33h 30m

$969

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Mon 12/1

6:00 pm-9:47 am

2 stops46h 47m

Idaho Falls Fanning Field

Mon 12/8

2:45 pm-9:40 am

1 stop11h 55m

$1,224

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Mon 12/1

4:30 pm-1:27 pm

1 stop27h 57m

Idaho Falls Fanning Field

Mon 12/8

1:58 pm-11:40 am

1 stop14h 42m

$1,488

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Mon 12/1

5:25 pm-4:27 pm

2 stops30h 02m

Idaho Falls Fanning Field

Thu 12/4

6:00 am-6:50 am

2 stops17h 50m

$1,519

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/15

  • Most accurate provider: When it comes to deals on London Heathrow Airport-Idaho Falls flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on London Heathrow Airport-Idaho Falls flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London Heathrow Airport-Idaho Falls flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on London Heathrow Airport-Idaho Falls flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for London Heathrow Airport-Idaho Falls flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Heathrow to Idaho Falls

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

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

Currently, September is the cheapest month in which you can book a flight from London Heathrow Airport to Idaho Falls (average of $820). Flying from London Heathrow Airport to Idaho Falls in December is currently the most expensive (average of $1,344). 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

Find useful and relevant information for your journey from Heathrow to Idaho Falls. 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 Idaho Falls from London Heathrow?

    Idaho Falls Fanning Field (IDA), located 3.8 mi from the city center, is the airport you fly into when you book flights from London Heathrow to Idaho Falls. 0 airlines have flights to Fanning Field from London Heathrow on a regular basis. Booking flights from London Heathrow to Idaho Falls Fanning Field should not be difficult; the airport handles an average of 0 inbound flights from London Heathrow per day.

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

    A quick flight from London Heathrow Airport to Idaho Falls can take about 20h 36m. American Airlines provides one of the quickest options available for as low as $969. London Heathrow Airport and Idaho Falls are separated by a distance of 4705 mi.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Heathrow to Idaho Falls 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 Idaho Falls?

    Currently, September is the cheapest month in which you can book a flight from London Heathrow Airport to Idaho Falls (average of $820). Flying from London Heathrow Airport to Idaho Falls in December is currently the most expensive (average of $1,344). 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

Traveling to a place near Idaho Falls?

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Rexburg

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