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Idaho Falls

$548+ Cheap flights from Heathrow (LHR) to Idaho Falls (IDA)

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 3/10. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — IDA
Mar 23 — Mar 301
Mon 3/23
Mon 3/30
1 adult, Economy
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Cheap 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 February 21, 2026.

This The Travel House deal was found by Cheapflights users on 2/21. 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 The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/112:55 pm
LHR
-
IDA
1 stop15h 24m
Finnair
Fri 9/257:35 am
IDA
-
LHR
2 stops16h 20m
Finnair
Deal found 2/21$990
This Delta deal was found by Cheapflights users on 2/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/19:20 am
LHR
-
IDA
2 stops19h 54m
Delta
Fri 9/256:50 pm
IDA
-
LHR
2 stops18h 20m
Delta
Deal found 2/21$1,082
This Flighttix deal was found by Cheapflights users on 2/18. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/412:35 pm
LHR
-
IDA
2 stops17h 49m
British Airways
Sat 3/72:18 pm
IDA
-
LHR
2 stops33h 02m
British Airways
Deal found 2/18$1,101
This Scandinavian Airlines deal was found by Cheapflights users on 2/21. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/110:20 am
LHR
-
IDA
3 stops31h 19m
Multiple Airlines
Fri 9/256:50 pm
IDA
-
LHR
3 stops39h 50m
Multiple Airlines
Deal found 2/21$1,332
This Air France deal was found by Cheapflights users on 2/18. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/286:20 am
LHR
-
IDA
2 stops23h 01m
Air France
Thu 3/55:25 am
IDA
-
LHR
2 stops18h 25m
Air France
Deal found 2/18$1,360

Find 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 February 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,101
(Flighttix)

One-way from

$548
(Kiwi.com)
Provider with most accurate pricing for London Heathrow-Idaho Falls Fanning Field flight deals.
Search Deals
Provider most trusted by Cheapflights users for London Heathrow-Idaho Falls Fanning Field flights.
Search Deals
From London Heathrow to Idaho Falls Fanning Field
Search Deals
One-way flight from London Heathrow to Idaho Falls Fanning Field
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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 February 21, 2026.
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

Wed 3/4

12:35 pm-11:24 pm

2 stops17h 49m

Idaho Falls Fanning Field

Sat 3/7

2:18 pm-6:20 am

2 stops33h 02m

$1,101

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Wed 3/4

10:20 am-12:22 pm

3 stops33h 02m

Idaho Falls Fanning Field

Sat 3/7

1:10 pm-5:40 pm

3 stops21h 30m

$2,080

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 3/10

2:50 pm-4:43 pm

3 stops31h 53m

$548

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Fri 6/19

6:00 pm-6:14 pm

2 stops31h 14m

$864

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Fri 6/19

5:00 pm-11:59 pm

1 stop13h 59m

$873

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 3/10

11:35 am-9:06 pm

1 stop15h 31m

$1,120

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Fri 6/19

10:20 am-10:39 am

3 stops31h 19m

$3,749

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/18

  • 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 $777). Flying from London Heathrow Airport to Idaho Falls in December is currently the most expensive (average of $1,366). 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 17h 49m. British Airways provides one of the quickest options available for as low as $1,101. 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 $777). Flying from London Heathrow Airport to Idaho Falls in December is currently the most expensive (average of $1,366). 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

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