£339 Cheap Flights from Idaho Falls (IDA) to London (LHR)

View £339 flight on Tue, 28 Oct 2025Opens in a new window

Popular airlines from Idaho Falls Regional Airport (IDA) to Heathrow Airport (LHR)

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Cheap Flights from Idaho Falls (IDA) to London (LHR)

Prices were available within the past 7 days and start at £339 for one-way flights and £484 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Virgin Atlantic
Mon, 1 Sep - Mon, 8 Sep
IDA
Idaho Falls
LHR
London
£484 Return, found 6 days ago
£484
Return
found 6 days ago
Select Virgin Atlantic flight, departing Mon, 1 Sep from Idaho Falls to London, returning Mon, 8 Sep, priced at £484 found 6 days ago
Air France
Mon, 1 Sep - Mon, 8 Sep
IDA
Idaho Falls
LHR
London
£583 Return, found 6 days ago
£583
Return
found 6 days ago
Select Air France flight, departing Mon, 1 Sep from Idaho Falls to London, returning Mon, 8 Sep, priced at £583 found 6 days ago
Air France
Sun, 12 Oct - Sun, 19 Oct
IDA
Idaho Falls
LHR
London
£641 Return, found 2 days ago
£641
Return
found 2 days ago
Select Air France flight, departing Sun, 12 Oct from Idaho Falls to London, returning Sun, 19 Oct, priced at £641 found 2 days ago
KLM
Sun, 11 Jan - Sun, 18 Jan
IDA
Idaho Falls
LHR
London
£653 Return, found 2 days ago
£653
Return
found 2 days ago
Select KLM flight, departing Sun, 11 Jan from Idaho Falls to London, returning Sun, 18 Jan, priced at £653 found 2 days ago
Air France
Fri, 13 Feb - Mon, 16 Feb
IDA
Idaho Falls
LHR
London
£655 Return, found 4 days ago
£655
Return
found 4 days ago
Select Air France flight, departing Fri, 13 Feb from Idaho Falls to London, returning Mon, 16 Feb, priced at £655 found 4 days ago
Air France
Sun, 12 Oct - Sun, 19 Oct
IDA
Idaho Falls
LHR
London
£656 Return, found 2 days ago
£656
Return
found 2 days ago
Select Air France flight, departing Sun, 12 Oct from Idaho Falls to London, returning Sun, 19 Oct, priced at £656 found 2 days ago
KLM
Fri, 3 Apr - Thu, 9 Apr
IDA
Idaho Falls
LHR
London
£659 Return, found 5 days ago
£659
Return
found 5 days ago
Select KLM flight, departing Fri, 3 Apr from Idaho Falls to London, returning Thu, 9 Apr, priced at £659 found 5 days ago
KLM
Sun, 12 Oct - Sun, 19 Oct
IDA
Idaho Falls
LHR
London
£661 Return, found 2 days ago
£661
Return
found 2 days ago
Select KLM flight, departing Sun, 12 Oct from Idaho Falls to London, returning Sun, 19 Oct, priced at £661 found 2 days ago
KLM
Fri, 13 Feb - Mon, 16 Feb
IDA
Idaho Falls
LHR
London
£662 Return, found 4 days ago
£662
Return
found 4 days ago
Select KLM flight, departing Fri, 13 Feb from Idaho Falls to London, returning Mon, 16 Feb, priced at £662 found 4 days ago
Alaska Airlines
Sun, 12 Oct - Sun, 19 Oct
IDA
Idaho Falls
LHR
London
£1,033 Return, found 2 days ago
£1,033
Return
found 2 days ago
Select Alaska Airlines flight, departing Sun, 12 Oct from Idaho Falls to London, returning Sun, 19 Oct, priced at £1,033 found 2 days ago
Flight from Idaho Falls to London route information
Origin airport
Idaho Falls Regional
Destination airport
Heathrow
Return price
£484
Distance
7533 km

Compare flights from Idaho Falls to London easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Idaho Falls to London. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Heathrow in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Idaho Falls Regional to Heathrow.  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Idaho Falls Regional (IDA) to Heathrow (LHR)

The easiest way to view the best deals on flights from Idaho Falls to London today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Idaho Falls Regional to Heathrow start at just £484 and range up to £1,033.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Idaho Falls and London
  • booking your flight during September, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Idaho Falls to London flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Idaho Falls Regional to Heathrow for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Frequently asked questions

How much is a flight from IDA to Heathrow Airport?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price available for a round-trip flight between Idaho Falls Regional Airport and Heathrow Airport (LHR) was £484. Cheap tickets don't hang around, so make sure you book yours ASAP. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from IDA to London Heathrow?
We get that things crop up unexpectedly, so we've made it as simple as possible for you to cancel your flight online. Just visit the Customer Service Portal and follow the instructions.
How do I find cheap flights from Idaho Falls Regional Airport (IDA) to London Heathrow that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Idaho Falls Regional Airport (IDA) to Heathrow Airport (LHR) flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Idaho Falls Regional Airport (IDA) to Heathrow Airport?
With around 7,600 kilometres separating Idaho Falls Regional Airport (IDA) and Heathrow Airport, your flight will be a long one. Pack wisely to make your time on board more comfortable. Things like warm clothing and a quality travel pillow can make a big difference.
Which airlines fly direct from Idaho Falls Regional Airport (IDA) to Heathrow Airport (LHR)?
Flying directly between Idaho Falls Regional Airport and Heathrow Airport (LHR) isn't possible at this time. However, you'll still be able to book a flight to Hounslow with at least one stop.
Are Idaho Falls Regional Airport to LHR flight tickets cheaper when they're purchased at the last minute?
Last-minute bookings from Idaho Falls Regional Airport to LHR can be hit-or-miss. It is possible to find a bargain, but you could also miss out entirely! If you'd prefer to start planning your trip ahead of time, Expedia compares flight deals up to 12 months in advance. Just keep in mind that not all airlines publish their prices that far in advance. Our top tip? Check back often as updates are made frequently.

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