Cheap Flights from London Heathrow to Idaho Falls

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Compare London Heathrow to Idaho Falls flight deals

Find the cheapest month or even day of the year to fly to Idaho Falls

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Flight deals from London Heathrow to Idaho Falls

Looking for a cheap last-minute deal or the best return flight from London Heathrow Airport to Idaho Falls Airport? If you want to travel next month, return fares start from $2,046. Find the lowest prices on one-way and return tickets right here.

Idaho Falls.$1,920 per passenger.Departing Wed, 4 Nov, returning Wed, 11 Nov.Return flight with Delta.Outbound indirect flight with Delta, departs from London Heathrow on Wed, 4 Nov, arriving in Idaho Falls.Inbound indirect flight with Delta, departs from Idaho Falls on Wed, 11 Nov, arriving in London Heathrow.Price includes taxes and charges.From $1,920, select.

Idaho Falls.$1,963 per passenger.Departing Mon, 3 May, returning Thu, 13 May.Return flight with Delta.Outbound indirect flight with Delta, departs from London Heathrow on Mon, 3 May, arriving in Idaho Falls.Inbound indirect flight with Delta, departs from Idaho Falls on Thu, 13 May, arriving in London Heathrow.Price includes taxes and charges.From $1,963, select.

Idaho Falls.$1,992 per passenger.Departing Mon, 7 Dec, returning Sun, 13 Dec.Return flight with Delta.Outbound indirect flight with Delta, departs from London Heathrow on Mon, 7 Dec, arriving in Idaho Falls.Inbound indirect flight with Delta, departs from Idaho Falls on Sun, 13 Dec, arriving in London Heathrow.Price includes taxes and charges.From $1,992, select.

Idaho Falls.$2,042 per passenger.Departing Sun, 18 Apr, returning Sun, 25 Apr.Return flight with Delta.Outbound indirect flight with Delta, departs from London Heathrow on Sun, 18 Apr, arriving in Idaho Falls.Inbound indirect flight with Delta, departs from Idaho Falls on Sun, 25 Apr, arriving in London Heathrow.Price includes taxes and charges.From $2,042, select.

Idaho Falls.$2,046 per passenger.Departing Sat, 3 Oct, returning Tue, 13 Oct.Return flight with Delta.Outbound indirect flight with Delta, departs from London Heathrow on Sat, 3 Oct, arriving in Idaho Falls.Inbound indirect flight with Delta, departs from Idaho Falls on Tue, 13 Oct, arriving in London Heathrow.Price includes taxes and charges.From $2,046, select.

Idaho Falls.$2,059 per passenger.Departing Mon, 4 Jan, returning Sun, 10 Jan.Return flight with Delta.Outbound indirect flight with Delta, departs from London Heathrow on Mon, 4 Jan, arriving in Idaho Falls.Inbound indirect flight with Delta, departs from Idaho Falls on Sun, 10 Jan, arriving in London Heathrow.Price includes taxes and charges.From $2,059, select.

Idaho Falls.$2,228 per passenger.Departing Sun, 20 Jun, returning Wed, 30 Jun.Return flight with KLM.Outbound indirect flight with KLM, departs from London Heathrow on Sun, 20 Jun, arriving in Idaho Falls.Inbound indirect flight with KLM, departs from Idaho Falls on Wed, 30 Jun, arriving in London Heathrow.Price includes taxes and charges.From $2,228, select.

Idaho Falls.$2,316 per passenger.Departing Sun, 11 Jul, returning Sun, 18 Jul.Return flight with Delta.Outbound indirect flight with Delta, departs from London Heathrow on Sun, 11 Jul, arriving in Idaho Falls.Inbound indirect flight with Delta, departs from Idaho Falls on Sun, 18 Jul, arriving in London Heathrow.Price includes taxes and charges.From $2,316, select.

Idaho Falls.$2,353 per passenger.Departing Sun, 27 Dec, returning Thu, 7 Jan.Return flight with Delta.Outbound indirect flight with Delta, departs from London Heathrow on Sun, 27 Dec, arriving in Idaho Falls.Inbound indirect flight with Delta, departs from Idaho Falls on Thu, 7 Jan, arriving in London Heathrow.Price includes taxes and charges.From $2,353, select.

Idaho Falls.$2,703 per passenger.Departing Tue, 22 Sep, returning Tue, 29 Sep.Return flight with KLM and Air France.Outbound indirect flight with KLM, departs from London Heathrow on Tue, 22 Sep, arriving in Idaho Falls.Inbound indirect flight with Air France, departs from Idaho Falls on Tue, 29 Sep, arriving in London Heathrow.Price includes taxes and charges.From $2,703, select.

Idaho Falls.$2,763 per passenger.Departing Sat, 24 Jul, returning Sat, 7 Aug.Return flight with Delta.Outbound indirect flight with Delta, departs from London Heathrow on Sat, 24 Jul, arriving in Idaho Falls.Inbound indirect flight with Delta, departs from Idaho Falls on Sat, 7 Aug, arriving in London Heathrow.Price includes taxes and charges.From $2,763, select.

Idaho Falls.$2,782 per passenger.Departing Thu, 24 Sep, returning Thu, 1 Oct.Return flight with Delta.Outbound indirect flight with Delta, departs from London Heathrow on Thu, 24 Sep, arriving in Idaho Falls.Inbound indirect flight with Delta, departs from Idaho Falls on Thu, 1 Oct, arriving in London Heathrow.Price includes taxes and charges.From $2,782, select.

Find the cheapest month to fly from London Heathrow to Idaho Falls

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like London Heathrow to Idaho Falls flights are currently cheapest in November.

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London Heathrow to Idaho Falls: Alternative routes

Compare routes from London Heathrow to Idaho Falls below. You may find an airport to fly into that's cheaper, faster, or easier than Idaho Falls.

Idaho Falls

4km from central Idaho Falls

ClosestCheapest

from $1,920

Search flights

Pocatello

79km from central Idaho Falls

from $2,473

Search flights

London to Idaho Falls: Flight information

The things to know before you go.

Cheapest flight found	$1,920
Cheapest month to fly	November

Finding cheap flights from London Heathrow to Idaho Falls: Frequently asked questions

How much are return flights from London Heathrow to Idaho Falls?

The best price we found for a return flight from London Heathrow to Idaho Falls is $1,920. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

Which airlines fly direct from London Heathrow to Idaho Falls?

Currently, there are no airlines that fly direct from London Heathrow to Idaho Falls. But we found flights with one or more stops from $1,923.

How many flights are there a week from London Heathrow to Idaho Falls?

As of September 2026, there are no flights flying from London Heathrow to Idaho Falls.

When is the cheapest time to fly from London Heathrow to Idaho Falls?

The cheapest month to fly from London Heathrow to Idaho Falls is usually November.

Which upcoming date is cheapest to fly from London Heathrow Airport to Idaho Falls Airport on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from London Heathrow Airport to Idaho Falls Airport on Wednesday, 4 November 2026.

Can I get a direct flight from London Heathrow Airport to Idaho Falls Airport?

No airlines currently offer direct flights between London Heathrow Airport and Idaho Falls Airport. Most routes have one or more stops.

How can I find the best flight deal to Idaho Falls?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Idaho Falls but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Idaho Falls?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Idaho Falls is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly from London Heathrow Airport to Idaho Falls with?

Currently, Delta offers the cheapest flight tickets to Idaho Falls.

Flying from London Heathrow Airport (LHR) to Idaho Falls Regional Airport (IDA): what you need to know

Get to the airport on time so you don't miss your LHR to IDA flight. Be there at least two hours ahead for international flights and an hour early for domestic departures to avoid the stress of rushing.
You'll likely experience longer queues in popular months like July. Arriving up to four hours in advance for an international flight and two hours for a domestic departure will help ensure a smooth travel experience.
We make it a breeze to book a flight with a stopover. To see all your options for tickets from London Heathrow Airport to Idaho Falls Regional Airport, deselect 'Direct flights only.' Then, choose a flight offering a stop long enough to tour the city of your choice. Top stopovers between LHR and IDA include:
- Portland International Airport
- Denver International Airport
- Salt Lake City International Airport

How to find the cheapest flights from London Heathrow Airport (LHR) to Idaho Falls Regional Airport (IDA)

$1,388 is the lowest price for a one-way London Heathrow Airport to Idaho Falls Regional Airport flight. A return flight starts from $1,923. These fares can change based on demand and availability.
Don't leave things to the last minute. You're more likely to get cheap tickets from LHR to IDA if you book in advance. Airlines often have some terrific early bird discounts.
Getting cheap flights from London Heathrow Airport to Idaho Falls Regional Airport is easy if you're flexible with your dates. Use the 'Whole month' search tool to see the lowest prices throughout the month and snap up a great deal.
Getting your hands on cheap flights from LHR to IDA couldn't be easier with Price Alerts. Simply create one of these automatic alerts and we'll notify you when a lower fare pops up.
Tailor your flights with filters. Choose your ideal departure and arrival times, total journey duration and airlines. You can also sort your results by 'Fastest,' 'Best' or 'Cheapest' flights from London Heathrow Airport to Idaho Falls Regional Airport.

Handy information about London Heathrow Airport (LHR)

When it comes to the on-time performance of London Heathrow Airport, data shows 68.18% of flights stick to their scheduled arrival time.
To reach London Heathrow Airport from central London, it'll take around 55 minutes if you're travelling by car. This depends on traffic though. It's approximately 31 kilometres from the airport to the city centre.
The journey on public transport will take about 1 hour.
Looking for a convenient hotel close to LHR? If you're boarding an early flight from London Heathrow Airport to Idaho Falls Regional Airport, these accommodation options will have you sleeping moments from your departure gate:

Arriving at Idaho Falls Regional Airport (IDA)

The last thing you need is a long trip to your hotel if you're arriving on a late London Heathrow Airport to Idaho Falls Regional Airport flight. Book one of these accommodation options near IDA instead:
Hit the road running by picking up an Idaho Falls Regional Airport rental car. Grab a set of wheels from Budget, Avis or Alamo to explore Idaho Falls and beyond.
To get the lowest possible price, book your ride from Idaho Falls Regional Airport at least a couple of weeks in advance. Prices generally rise closer to your departure date.

Getting from Idaho Falls Regional Airport (IDA) to central Idaho Falls

The address for IDA is 2140 North Skyline.
Idaho Falls Regional Airport is approximately 5 kilometres from central Idaho Falls. Driving there takes about 10 minutes.
If you're using public transport, expect a journey time of around 1 hour.

When to fly to Idaho Falls Regional Airport (IDA)

It's time to pick your dates for your flight from London Heathrow Airport to Idaho Falls Regional Airport. July is the busiest month to visit Idaho Falls. If you'd like a more relaxed vibe, go in February.
The warmest month in Idaho Falls is July, with the temperature ranging between 11ºC and 35ºC. Lock in your flights from London Heathrow Airport to Idaho Falls Regional Airport in this month if this is the type of weather you enjoy.
January sees average temperatures of between -15ºC and 1ºC. Look for cheap tickets from LHR to IDA sometime around then if you like cooler conditions.

Explore more of United States

You've visited Idaho Falls, now it's time to explore more of United States. Journey around 306 kilometres south to Salt Lake City to tick off its leading attractions. From Temple Square to Utah State Capitol and Red Butte Garden, your itinerary will be busy.
If you're ready to explore another side of United States, consider Boise, roughly 338 kilometres west of Idaho Falls. Idaho State Capitol Building, Old Idaho Penitentiary and Zoo Boise are highlights.