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Cheap flights from London to Idaho Falls from £404

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 13/3. Fares are subject to change and may not be available on all flights or dates of travel.
LON — IDA
7 Feb — 14 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from London to Idaho Falls

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) 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 8 January 2026.

Round-trip from

£704

One-way from

£404

Popular in

December

Cheapest in

November

Average price

£658
Delta
  • Delta
  • 21/2-28/2
  • 2 total stops
  • 32h 26m total
  • London to Idaho Falls
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13/3
  • 13/3
  • 3 total stops
  • 49h 02m total
  • London to Idaho Falls
Search Deals
High demand for flights, 0% potential price rise
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Cheapest flight prices on average. 4% potential price decrease (£26 potential savings vs. average return price).
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Average for round-trip flights in January 2026
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Find flight deals from London to Idaho Falls

Enter your travel dates to find the best prices.

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 8 January 2026.

Sat 21/210:45LHR - IDA
1 stop18h 36mDelta
Sat 28/205:25IDA - LHR
2 stops19h 40mDelta
Deal found 7/1£704
Sat 21/211:20LHR - IDA
2 stops18h 01mVirgin Atlantic
Sat 28/213:10IDA - LHR
2 stops15h 45mVirgin Atlantic
Deal found 7/1£709
Wed 14/116:40LHR - IDA
2 stops48h 16mUnited Airlines
Sun 18/110:51IDA - LHR
2 stops16h 59mUnited Airlines
Deal found 5/1£732
Fri 20/207:25LHR - IDA
2 stops20h 33mUnited Airlines
Fri 27/210:45IDA - LHR
2 stops15h 25mUnited Airlines
Deal found 6/1£749
Mon 20/708:15LHR - IDA
2 stops20h 42mIberia
Wed 5/813:00IDA - LHR
2 stops18h 15mIberia
Deal found 7/1£980
Mon 20/708:55LHR - IDA
1 stop20h 02mFinnair
Wed 5/812:46IDA - LHR
1 stop16h 29mFinnair
Deal found 6/1£1,006
Mon 20/717:00LHR - IDA
1 stop29h 29mAlaska Airlines
Wed 5/816:03IDA - LHR
1 stop16h 02mAlaska Airlines
Deal found 6/1£1,043
Mon 20/709:15LHR - IDA
2 stops19h 42mAmerican Airlines
Wed 5/813:00IDA - LHR
1 stop13h 00mAmerican Airlines
Deal found 6/1£1,051
Sat 21/211:55LGW - IDA
2 stops18h 41mMultiple Airlines
Sat 28/217:20IDA - LGW
2 stops34h 35mMultiple Airlines
Deal found 7/1£1,409
Mon 20/715:40LGW - IDA
2 stops31h 00mMultiple Airlines
Wed 5/806:00IDA - LGW
2 stops22h 45mMultiple Airlines
Deal found 6/1£3,907

Cheapflights Fare Finder

 
Customise your flight search to find flights from London 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 858,174 searches. Data last updated 8 January 2026.
Use the filters below to find and compare flights from London to Idaho Falls that are best for you.

Fly from

London

Fly to

Idaho Falls

Route

Depart

Return

Price

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 21/2

10:45-22:21

1 stop18h 36m

Idaho Falls Fanning Field

Sat 28/2

13:10-10:00

1 stop13h 50m

£704

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 21/2

11:20-22:21

2 stops18h 01m

Idaho Falls Fanning Field

Sat 28/2

13:10-11:55

2 stops15h 45m

£709

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Fri 20/2

11:35-20:58

1 stop16h 23m

Idaho Falls Fanning Field

Fri 27/2

14:40-09:40

1 stop12h 00m

£749

LondonIdaho Falls

LGW - IDA

LGWIDA

London Gatwick

Sat 21/2

11:55-23:36

2 stops18h 41m

Idaho Falls Fanning Field

Sat 28/2

17:20-10:55

2 stops34h 35m

£1,409

LondonIdaho Falls

LGW - IDA

LGWIDA

London Gatwick

Fri 13/3

14:00-09:02

3 stops49h 02m

£404

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Fri 5/6

06:40-15:31

3 stops39h 51m

£460

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Fri 13/3

19:30-09:02

3 stops43h 32m

£471

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Fri 5/6

09:55-22:14

2 stops19h 19m

£634

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Fri 5/6

08:55-21:57

1 stop20h 02m

£639

Flights are sorted by cheapest return flights first.

Deals found on 7/1

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 is the cheapest month to book a flight from London to Idaho Falls?

Currently, September is the cheapest month in which you can book a flight from London to Idaho Falls (average of £597). Flying from London to Idaho Falls in December is currently the most expensive (average of £1,013). 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.

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.

Denver (DEN) – chosen by Cheapflights users on 56% of one-stop itineraries from London to Idaho Falls on Cheapflights.

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.

Dallas (DFW) is the most affordable one-stop option, with an average return flight price of £731.

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.

Flights via Denver (DEN) have the shortest average one-way travel time for one-stop routes: 13h 16m.

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.

Flights via Denver (DEN) offer the fastest connection on this route, with an average stopover time of 1h 36m.

Reviews of airlines servicing Idaho Falls

Get insights into the airlines that provide service to Idaho Falls. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Idaho Falls. Reviews last updated 8 January 2026.
Read through reviews of airlines operating flights from London to Idaho Falls, such as Virgin Atlantic and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Virgin Atlantic
7.5
Good
678 reviews
Check prices

Overall

7.5

Entertainment

7.6

Food

6.9

Boarding

7.7

Comfort

7.3

Crew

8.2

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Virgin Atlantic
7.5
Good
678 reviews
Virgin Atlantic
7.5
Good
678 reviews
Check prices

Overall

7.5

Entertainment

7.6

Food

6.9

Boarding

7.7

Comfort

7.3

Crew

8.2

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
United Airlines
7.4
Good
9,139 reviews
Virgin Atlantic
7.5
Good
678 reviews
Check prices

Overall

7.5

Entertainment

7.6

Food

6.9

Boarding

7.7

Comfort

7.3

Crew

8.2

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!

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?

    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 £749, Delta can have you in Idaho Falls from London in 16h 23m. 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 £646 on this airline. An additional option worth looking into is United Airlines, starting at £754. Virgin Atlantic is 19% 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.

  • What is the cheapest month to book a flight from London to Idaho Falls?

    Currently, September is the cheapest month in which you can book a flight from London to Idaho Falls (average of £597). Flying from London to Idaho Falls in December is currently the most expensive (average of £1,013). 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

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from London to Idaho Falls

Discover the top 2 airlines that operate flights from London to Idaho Falls. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 8 January 2026.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£646Average£896FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
United AirlinesCheapest£754Average£1,006FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

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?

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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