How long is the flight from London to Idaho Falls?

For as low as £596, American Airlines can have you in Idaho Falls from London in 15h 09m. There are 4705 mi between London and Idaho Falls. Both multi-stop and direct flights can be found to your destination and back.

What are the cheapest airlines flying from London to Idaho Falls round-trip?

Our cheapest airline available from London to Idaho Falls is Virgin Atlantic. Our recent data shows that you can find tickets from as low as £638 on this airline. An additional option worth looking into is United Airlines, starting at £746. Virgin Atlantic is 16% cheaper than the average price of flights available within the next 90 days to this destination.

What is the cheapest day to fly from London to Idaho Falls?

Travellers seeking maximum savings on their London to Idaho Falls flight should consider departing on Tuesday mornings when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in Idaho Falls ranges from 15.0 - 51.0 inches per month. May is typically the wettest month, when rainfall can reach 51.0 mm. July is typically the driest time to visit Idaho Falls when rainfall is around 15.0 mm.

If weather is an important factor for your trip to Idaho Falls, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

What is the cheapest time of day to fly from LON to IDA?

A simple way to save on the total cost of your ticket is to fly from London to Idaho Falls in the afternoon. If you’re flexible enough to do this you can expect to save up to 13% on your trip compared to booking a flight in the morning.

What airport do you fly into for flights to Idaho Falls from London?

For a flight from London to Idaho Falls, you will be flying into Fanning Field. Idaho Falls Fanning Field (IDA) is just 3.8 mi from the center of the city. Fanning Field is the only Idaho Falls airport and it handles 0 inbound flights from London per day. 2 airlines have flights to Idaho Falls Fanning Field from London on a regular basis.

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

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

How can I find direct flights from London to Idaho Falls?

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

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

Yes. Cheapflights offers flight deals from London 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.

£418+ Cheap Flights from London to Idaho Falls

Cheap flight deals from London to Idaho Falls

Round-trip from	£596
One-way from	£418
Popular in	May
Cheapest in	November
Average price	£764

American Airlines
22/11-26/11
3 total stops
44h 59m total
London to Idaho Falls

Search Deals

2/12
2 total stops
27h 39m total
London to Idaho Falls

Search Deals

Highest demand for flights based on searches. 6% potential increase in price (£40 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£15 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2025

Search Deals

Find flight deals from London to Idaho Falls

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

Thu 30/1010:05LHR - IDA

1 stop17h 44mMultiple Airlines

Thu 6/1113:58IDA - LHR

1 stop14h 42mMultiple Airlines

Deal found 15/9£591

Sat 22/1114:25LHR - IDA

1 stop15h 09mAmerican Airlines

Wed 26/1107:10IDA - LHR

2 stops29h 50mAmerican Airlines

Deal found 16/9£596

Sat 22/1106:20LHR - IDA

2 stops18h 57mDelta

Wed 26/1106:00IDA - LHR

1 stop21h 00mDelta

Deal found 14/9£599

Thu 30/1010:45LHR - IDA

1 stop13h 28mDelta

Thu 6/1106:00IDA - LHR

2 stops18h 05mDelta

Deal found 15/9£608

Sat 1/1111:55LHR - IDA

1 stop15h 53mMultiple Airlines

Sat 8/1107:10IDA - LHR

1 stop23h 05mMultiple Airlines

Deal found 17/9£624

Thu 30/1011:15LHR - IDA

2 stops31h 26mBritish Airways

Thu 6/1107:10IDA - LHR

2 stops20h 15mBritish Airways

Deal found 15/9£639

Sat 1/1110:10LHR - IDA

2 stops18h 05mDelta

Sat 8/1106:00IDA - LHR

1 stop21h 00mDelta

Deal found 17/9£641

Sat 22/1106:20LHR - IDA

2 stops18h 57mAir France

Wed 26/1106:00IDA - LHR

2 stops29h 20mAir France

Deal found 16/9£653

Best flights from London to Idaho Falls
Discover carefully curated flight deals from London to Idaho Falls that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 18 September 2025.

Sat 22/1114:25LHR - IDA

1 stop15h 09mAmerican Airlines

Wed 26/1107:10IDA - LHR

2 stops29h 50mAmerican Airlines

Deal found 16/9£596

Sat 22/1106:20LHR - IDA

2 stops23h 13mDelta

Wed 26/1106:00IDA - LHR

1 stop21h 00mDelta

Deal found 15/9£600

Sat 22/1106:20LHR - IDA

2 stops18h 57mAir France

Wed 26/1106:00IDA - LHR

2 stops29h 20mAir France

Deal found 16/9£653

Sat 1/1107:30LHR - IDA

2 stops16h 16mUnited Airlines

Sat 8/1110:50IDA - LHR

1 stop15h 50mUnited Airlines

Deal found 17/9£666

Sat 1/1110:10LHR - IDA

2 stops18h 05mDelta

Sat 8/1106:00IDA - LHR

1 stop21h 00mDelta

Deal found 17/9£641

Last-minute flights from London to Idaho Falls
Discover last-minute flight deals from London to Idaho Falls. Data last updated 18 September 2025 and is based on user searches.

Thu 30/1010:05LHR - IDA

1 stop17h 44mMultiple Airlines

Thu 6/1113:58IDA - LHR

1 stop14h 42mMultiple Airlines

Deal found 15/9£591

Thu 30/1010:45LHR - IDA

1 stop13h 28mDelta

Thu 6/1106:00IDA - LHR

2 stops18h 05mDelta

Deal found 15/9£608

Thu 30/1011:15LHR - IDA

2 stops31h 26mBritish Airways

Thu 6/1107:10IDA - LHR

2 stops20h 15mBritish Airways

Deal found 15/9£639

One-way flights from London to Idaho Falls
Search for one-way flight options from London to Idaho Falls. Find affordable one-way fares based on user searches. Data last updated 18 September 2025.

Tue 2/1214:50LHR - IDA

2 stops27h 39mMultiple Airlines

Deal found 15/9£418

Tue 25/1111:40LHR - IDA

2 stops32h 47mAmerican Airlines

Deal found 16/9£463

Sat 11/1008:10LGW - IDA

3 stops38h 28mMultiple Airlines

Deal found 17/9£471

Fri 28/1114:50LHR - IDA

3 stops40h 12mMultiple Airlines

Deal found 15/9£484

Wed 26/1110:45LHR - IDA

1 stop18h 34mDelta

Deal found 16/9£491

Tue 2/1214:20LHR - IDA

1 stop15h 14mAmerican Airlines

Deal found 15/9£493

Mon 1/1215:00LHR - IDA

2 stops38h 34mAmerican Airlines

Deal found 16/9£501

Fly from

Fly to

Route

Depart

Return

Price

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 22/11

14:25-22:34

1 stop15h 09m

Idaho Falls Fanning Field

Wed 26/11

07:10-20:00

2 stops29h 50m

£596

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 22/11

06:20-22:33

2 stops23h 13m

Idaho Falls Fanning Field

Wed 26/11

06:00-10:00

1 stop21h 00m

£600

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 1/11

10:10-22:15

2 stops18h 05m

Idaho Falls Fanning Field

Sat 8/11

06:00-10:00

1 stop21h 00m

£641

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 22/11

06:20-18:17

2 stops18h 57m

Idaho Falls Fanning Field

Wed 26/11

06:00-18:20

2 stops29h 20m

£653

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 1/11

07:30-17:46

2 stops16h 16m

Idaho Falls Fanning Field

Sat 8/11

10:50-09:40

1 stop15h 50m

£666

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 2/12

14:50-11:29

2 stops27h 39m

£418

LondonIdaho Falls

LGW - IDA

LGWIDA

London Gatwick

Sat 11/10

08:10-15:38

3 stops38h 28m

£471

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Fri 28/11

14:50-00:02

3 stops40h 12m

£484

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 25/11

10:45-22:19

1 stop18h 34m

£491

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Wed 26/11

10:45-22:19

1 stop18h 34m

£491

Flights are sorted by cheapest return flights first.

Deals found on 15/9

Showing 1-10 of 12 results

Best time to book a flight from London to Idaho Falls

Have a flexible travel schedule? Discover the best time to fly to Idaho Falls from London with our price prediction graph.

Estimated return 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 to Idaho Falls

What’s the top stopover airport for flights from London to Idaho Falls?

Denver (DEN) – chosen by Cheapflights users on 54% of one-stop itineraries from London to Idaho Falls on Cheapflights.

What’s the cheapest stopover airport for flights from London to Idaho Falls?

Dallas (DFW) is the most affordable one-stop option, with an average return flight price of £680.

What’s the fastest stopover option from London to Idaho Falls?

Flights via Denver (DEN) have the shortest average one-way travel time for one-stop routes: 13h 14m.

Which airport typically offers the quickest stopover for flights from London to Idaho Falls?

Flights via Denver (DEN) offer the fastest connection on this route, with an average stopover time of 1h 33m.

Reviews of airlines servicing Idaho Falls

Read through reviews of airlines operating flights from London to Idaho Falls, such as United Airlines and Virgin Atlantic. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

8,926 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Julia,Sept 2025

BUF - DEN

The staff were amazing, from check in to boarding and on the flight. The range of entertainment options were really good as well.

United Airlines

7.4

Good

8,926 reviews

United Airlines

7.4

Good

8,926 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Julia,Sept 2025

BUF - DEN

The staff were amazing, from check in to boarding and on the flight. The range of entertainment options were really good as well.

Virgin Atlantic

7.4

Good

664 reviews

United Airlines

7.4

Good

8,926 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Julia,Sept 2025

BUF - DEN

The staff were amazing, from check in to boarding and on the flight. The range of entertainment options were really good as well.

Related info for your journey

What airport do you fly into for flights to Idaho Falls from London?
For a flight from London to Idaho Falls, you will be flying into Fanning Field. Idaho Falls Fanning Field (IDA) is just 3.8 mi from the center of the city. Fanning Field is the only Idaho Falls airport and it handles 0 inbound flights from London per day. 2 airlines have flights to Idaho Falls Fanning Field from London on a regular basis.
How long is the flight from London to Idaho Falls?
For as low as £596, American Airlines can have you in Idaho Falls from London in 15h 09m. There are 4705 mi between London and Idaho Falls. Both multi-stop and direct flights can be found to your destination and back.
What are the cheapest airlines flying from London to Idaho Falls round-trip?
Our cheapest airline available from London to Idaho Falls is Virgin Atlantic. Our recent data shows that you can find tickets from as low as £638 on this airline. An additional option worth looking into is United Airlines, starting at £746. Virgin Atlantic is 16% cheaper than the average price of flights available within the next 90 days to this destination.
Can I find deals for flights from London to Idaho Falls that include hotel bookings?
Yes. In addition to deals on London to Idaho Falls flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from London to Idaho Falls?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Idaho Falls.
Can I find deals for business class flights from London to Idaho Falls?
Yes. Cheapflights offers flight deals from London 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for London to Idaho Falls

Direct flights to United States

Top 2 airlines flying from London to Idaho Falls

Airline	Cheapest	Average	Flexibility	On-time
Virgin Atlantic	Cheapest£638	Average£886	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
United Airlines	Cheapest£746	Average£1,019	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights

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How does Cheapflights help users find flights from London to Idaho Falls?

Deals for London to Idaho Falls flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from London to Idaho Falls?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from London to Idaho Falls for you. Better yet — we are completely free to use.

Can Cheapflights find flights from London to Idaho Falls with no change fees?

Certainly. Search results for flights to Idaho Falls from London shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from London to Idaho Falls become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Idaho Falls from London today and book when prices fit your budget.

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Cheap flights from London to Idaho Falls from £418

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 2/12. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from London to Idaho Falls

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from London to Idaho Falls

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

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

Cheapflights Fare Finder

Use the filters below to find and compare flights from London to Idaho Falls that are best for you.

Best time to book a flight from London to Idaho Falls

Have a flexible travel schedule? Discover the best time to fly to Idaho Falls from London with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from London to Idaho Falls

What’s the top stopover airport for flights from London to Idaho Falls?

Share of one-stop return flights from London to Idaho Falls chosen by Cheapflights users in the past 12 months, using the same stopover each way.

What’s the cheapest stopover airport for flights from London to Idaho Falls?

Average return fare for one-stop flights from London to Idaho Falls, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

What’s the fastest stopover option from London to Idaho Falls?

Shortest average travel time for one-stop one-way flights from London to Idaho Falls, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Which airport typically offers the quickest stopover for flights from London to Idaho Falls?

Average stopover duration for one-stop one-way flights from London to Idaho Falls, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Reviews of airlines servicing Idaho Falls

Read through reviews of airlines operating flights from London to Idaho Falls, such as United Airlines and Virgin Atlantic. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from London 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?

How long is the flight from London to Idaho Falls?

What are the cheapest airlines flying from London to Idaho Falls round-trip?

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

How can I find direct flights from London to Idaho Falls?

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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for London to Idaho Falls

See prices for flight routes from nearby airports that may be better suited for you.

Top 2 airlines flying from London to Idaho Falls

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from London to Idaho Falls?

Why should you use Cheapflights to find cheap flight tickets from London to Idaho Falls?

Can Cheapflights find flights from London to Idaho Falls with no change fees?

Can Cheapflights notify me if prices for flights from London to Idaho Falls become cheaper?

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