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Idaho Falls

$879+ 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 10/7. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — IDA
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
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 January 29, 2026.

This The Travel House deal was found by Cheapflights users on 1/27. 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.
Wed 10/712:55 pm
LHR
-
IDA
1 stop15h 14m
Finnair
Mon 10/261:43 pm
IDA
-
LHR
2 stops34h 32m
Finnair
Deal found 1/27$879
This The Travel House deal was found by Cheapflights users on 1/27. 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 9/251:44 pm
IDA
-
LHR
1 stop34h 56m
Finnair
Deal found 1/27$884
This American Airlines deal was found by Cheapflights users on 1/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/19:15 am
LHR
-
IDA
2 stops19h 04m
American Airlines
Fri 9/257:35 am
IDA
-
LHR
1 stop18h 30m
American Airlines
Deal found 1/27$948
This lastminute.com deal was found by Cheapflights users on 1/27. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/711:40 am
LHR
-
IDA
2 stops41h 39m
Virgin Atlantic
Mon 10/261:10 pm
IDA
-
LHR
2 stops39h 20m
Virgin Atlantic
Deal found 1/27$959
This United Airlines deal was found by Cheapflights users on 1/26. 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.
Wed 2/186:30 am
LHR
-
IDA
2 stops34h 18m
United Airlines
Sun 2/222:40 pm
IDA
-
LHR
1 stop12h 00m
United Airlines
Deal found 1/26$992
This The Travel House deal was found by Cheapflights users on 1/27. 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 9/18:55 am
LHR
-
IDA
2 stops40h 19m
Air France
Fri 9/256:50 pm
IDA
-
LHR
2 stops31h 00m
Air France
Deal found 1/27$1,057
This Expedia deal was found by Cheapflights users on 1/29. 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.
Wed 10/71:05 pm
LHR
-
IDA
2 stops16h 34m
Multiple Airlines
Mon 10/264:03 pm
IDA
-
LHR
2 stops36h 47m
Multiple Airlines
Deal found 1/29$1,064
This Finnair deal was found by Cheapflights users on 1/28. 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.
Tue 9/112:55 pm
LHR
-
IDA
1 stop15h 24m
Multiple Airlines
Fri 9/251:46 pm
IDA
-
LHR
1 stop14h 09m
Multiple Airlines
Deal found 1/28$1,069

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 January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$992
(United Airlines)

Popular in

December

Cheapest in

November

Average price

$887
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
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($47 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 January 29, 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 2/18

6:30 am-9:48 am

2 stops34h 18m

Idaho Falls Fanning Field

Sun 2/22

2:40 pm-9:40 am

1 stop12h 00m

$992

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 3/14

9:25 am-11:36 pm

1 stop20h 11m

Idaho Falls Fanning Field

Sat 3/21

2:18 pm-12:15 pm

1 stop15h 57m

$1,122

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 3/14

9:25 am-11:24 pm

2 stops19h 59m

Idaho Falls Fanning Field

Sat 3/21

2:18 pm-12:15 pm

1 stop15h 57m

$1,148

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 3/14

7:40 am-9:06 pm

2 stops19h 26m

Idaho Falls Fanning Field

Sat 3/21

10:50 am-10:15 am

2 stops17h 25m

$1,250

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

  • 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 $1,366). 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 19h 59m. United Airlines provides one of the quickest options available for as low as $1,148. London Heathrow Airport and Idaho Falls are separated by a distance of 4705 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 $1,366). 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

Traveling to a place near Idaho Falls?

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