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

Our cheapest airline available from London to Idaho Falls is KLM. Our recent data shows that you can find tickets from as low as £773 on this airline. Additional options worth looking into are Virgin Atlantic and Delta, starting at £776 and £800 round-trip.

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.

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

It’s generally more expensive to depart on a Monday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

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

Due to multiple factors, expect to potentially pay more when booking in May. For low rates, February can be a great choice for travel to Idaho Falls. Flights to Idaho Falls from London in February are about £770 on average during February, but can be found for as low as £638.

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.

£773+ Flights from London to Idaho Falls

Cheap flight deals from London to Idaho Falls

Round-trip from	£773
Popular in	May
Cheapest in	February
Average price	£895

KLM
4/7-10/7
4 total stops
38h 55m total
London to Idaho Falls

Search Deals

Highest demand for flights based on searches. 10% potential increase in price (£69 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£14 potential savings vs. average return price).

Search Deals

Average for round-trip flights in June 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 13 June 2025.

Fri 4/711:45LHR - IDA

2 stops18h 10mKLM

Thu 10/711:20IDA - LHR

2 stops20h 45mKLM

Deal found 11/6£773

Sat 28/610:55LHR - IDA

1 stop14h 17mVirgin Atlantic

Wed 2/713:09IDA - LHR

1 stop13h 41mVirgin Atlantic

Deal found 12/6£776

Sat 28/612:25LHR - IDA

2 stops17h 30mDelta

Wed 2/713:09IDA - LHR

2 stops17h 36mDelta

Deal found 12/6£800

Fri 4/712:00LHR - IDA

1 stop32h 17mBritish Airways

Thu 10/713:47IDA - LHR

1 stop14h 03mBritish Airways

Deal found 11/6£811

Fri 4/709:15LHR - IDA

2 stops18h 58mAmerican Airlines

Thu 10/706:51IDA - LHR

1 stop19h 09mAmerican Airlines

Deal found 11/6£823

Sat 26/721:25LHR - IDA

2 stops26h 39mMultiple Airlines

Sat 2/821:34IDA - LHR

3 stops39h 46mMultiple Airlines

Deal found 10/6£919

Sat 26/713:00LGW - IDA

2 stops16h 39mMultiple Airlines

Sat 2/816:03IDA - LGW

2 stops15h 37mMultiple Airlines

Deal found 10/6£954

Sat 26/708:20LHR - IDA

1 stop20h 15mIberia

Sat 2/806:51IDA - LHR

1 stop19h 09mIberia

Deal found 10/6£1,069

Sun 27/712:05LHR - IDA

2 stops17h 46mUnited Airlines

Sun 3/816:13IDA - LHR

1 stop34h 27mUnited Airlines

Deal found 12/6£1,135

Sat 2/814:50LHR - IDA

1 stop15h 01mLufthansa

Tue 12/810:45IDA - LHR

1 stop18h 35mLufthansa

Deal found 11/6£1,244

Sat 2/812:00LGW - IDA

2 stops41h 29mVirgin Atlantic

Tue 12/815:00IDA - LGW

2 stops36h 00mVirgin Atlantic

Deal found 11/6£1,283

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 13 June 2025.

Fri 4/711:45LHR - IDA

2 stops18h 10mKLM

Thu 10/711:20IDA - LHR

2 stops20h 45mKLM

Deal found 11/6£773

Sat 28/610:55LHR - IDA

1 stop14h 17mVirgin Atlantic

Wed 2/713:09IDA - LHR

1 stop13h 41mVirgin Atlantic

Deal found 12/6£776

Sat 28/612:25LHR - IDA

2 stops17h 30mDelta

Wed 2/713:09IDA - LHR

2 stops17h 36mDelta

Deal found 12/6£800

Fri 4/712:00LHR - IDA

1 stop32h 17mBritish Airways

Thu 10/713:47IDA - LHR

1 stop14h 03mBritish Airways

Deal found 11/6£811

Fri 4/709:15LHR - IDA

2 stops18h 58mAmerican Airlines

Thu 10/706:51IDA - LHR

1 stop19h 09mAmerican Airlines

Deal found 11/6£823

Sat 26/721:25LHR - IDA

2 stops26h 39mMultiple Airlines

Sat 2/821:34IDA - LHR

3 stops39h 46mMultiple Airlines

Deal found 10/6£919

Sat 26/708:20LHR - IDA

1 stop20h 15mIberia

Sat 2/806:51IDA - LHR

1 stop19h 09mIberia

Deal found 10/6£1,069

Sun 27/712:05LHR - IDA

2 stops17h 46mUnited Airlines

Sun 3/816:13IDA - LHR

2 stops21h 27mUnited Airlines

Deal found 12/6£1,135

Sat 2/814:50LHR - IDA

1 stop15h 01mLufthansa

Tue 12/810:45IDA - LHR

1 stop18h 35mLufthansa

Deal found 11/6£1,244

Sat 26/713:00LGW - IDA

2 stops16h 39mMultiple Airlines

Sat 2/816:03IDA - LGW

2 stops15h 37mMultiple Airlines

Deal found 10/6£954

Sat 2/812:00LGW - IDA

2 stops41h 29mVirgin Atlantic

Tue 12/815:00IDA - LGW

2 stops36h 00mVirgin Atlantic

Deal found 11/6£1,283

Last-minute flights from London to Idaho Falls
Discover last-minute flight deals from London to Idaho Falls. Data last updated 13 June 2025 and is based on user searches.

Sat 28/610:55LHR - IDA

1 stop14h 17mVirgin Atlantic

Wed 2/713:09IDA - LHR

1 stop13h 41mVirgin Atlantic

Deal found 12/6£776

Sat 28/612:25LHR - IDA

2 stops17h 30mDelta

Wed 2/713:09IDA - LHR

2 stops17h 36mDelta

Deal found 12/6£800

Fri 4/711:45LHR - IDA

2 stops18h 10mKLM

Thu 10/711:20IDA - LHR

2 stops20h 45mKLM

Deal found 11/6£773

Fri 4/712:00LHR - IDA

1 stop32h 17mBritish Airways

Thu 10/713:47IDA - LHR

1 stop14h 03mBritish Airways

Deal found 11/6£811

Fri 4/709:15LHR - IDA

2 stops18h 58mAmerican Airlines

Thu 10/706:51IDA - LHR

1 stop19h 09mAmerican Airlines

Deal found 11/6£823

Sat 26/721:25LHR - IDA

2 stops26h 39mMultiple Airlines

Sat 2/821:34IDA - LHR

3 stops39h 46mMultiple Airlines

Deal found 10/6£919

Sat 26/713:00LGW - IDA

2 stops16h 39mMultiple Airlines

Sat 2/816:03IDA - LGW

2 stops15h 37mMultiple Airlines

Deal found 10/6£954

Sat 26/708:20LHR - IDA

1 stop20h 15mIberia

Sat 2/806:51IDA - LHR

1 stop19h 09mIberia

Deal found 10/6£1,069

Sun 27/712:05LHR - IDA

2 stops17h 46mUnited Airlines

Sun 3/816:13IDA - LHR

2 stops21h 27mUnited Airlines

Deal found 12/6£1,135

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Fri 4/7

11:45-22:55

2 stops18h 10m

Idaho Falls Fanning Field

Thu 10/7

11:20-15:05

2 stops20h 45m

£773

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 28/6

10:55-18:12

1 stop14h 17m

Idaho Falls Fanning Field

Wed 2/7

13:09-09:50

1 stop13h 41m

£776

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 28/6

12:25-22:55

2 stops17h 30m

Idaho Falls Fanning Field

Wed 2/7

13:09-13:45

2 stops17h 36m

£800

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Fri 4/7

12:00-13:17

1 stop32h 17m

Idaho Falls Fanning Field

Thu 10/7

13:47-10:50

1 stop14h 03m

£811

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Fri 4/7

09:15-21:13

2 stops18h 58m

Idaho Falls Fanning Field

Thu 10/7

06:51-09:00

1 stop19h 09m

£823

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 26/7

21:25-17:04

2 stops26h 39m

Idaho Falls Fanning Field

Sat 2/8

21:34-20:20

3 stops39h 46m

£919

LondonIdaho Falls

LGW - IDA

LGWIDA

London Gatwick

Sat 26/7

13:00-22:39

2 stops16h 39m

Idaho Falls Fanning Field

Sat 2/8

16:03-14:40

2 stops15h 37m

£954

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 26/7

08:20-21:35

1 stop20h 15m

Idaho Falls Fanning Field

Sat 2/8

06:51-09:00

1 stop19h 09m

£1,069

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sun 27/7

12:05-22:51

2 stops17h 46m

Idaho Falls Fanning Field

Sun 3/8

16:13-20:40

2 stops21h 27m

£1,135

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 2/8

14:50-22:51

1 stop15h 01m

Idaho Falls Fanning Field

Tue 12/8

10:45-12:20

1 stop18h 35m

£1,244

Flights are sorted by cheapest return flights first.

Deals found on 11/6

Showing 1-10 of 11 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

Rainfall in Idaho Falls by month

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.

Temperature in Idaho Falls by month

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).

Reviews of airlines servicing Idaho Falls

Delta

8.0

Very Good

7,950 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very Good

7,950 reviews

Delta

8.0

Very Good

7,950 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

KLM

7.8

Good

1,358 reviews

Delta

8.0

Very Good

7,950 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

United Airlines

7.4

Good

8,790 reviews

Delta

8.0

Very Good

7,950 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Virgin Atlantic

7.4

Good

652 reviews

Delta

8.0

Very Good

7,950 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very Good

7,950 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.
What are the cheapest airlines flying from London to Idaho Falls round-trip?
Our cheapest airline available from London to Idaho Falls is KLM. Our recent data shows that you can find tickets from as low as £773 on this airline. Additional options worth looking into are Virgin Atlantic and Delta, starting at £776 and £800 round-trip.
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£641	Average£947	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
United Airlines	Cheapest£731	Average£998	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights

Fly with Cheapflights

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 £773

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/7. 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

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 13 June 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 13 June 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

Rainfall in Idaho Falls by month

Plan your trip to Idaho Falls by taking into account the average rainfall totals by month.

Temperature in Idaho Falls by month

Plan your trip to Idaho Falls by taking into account the average temperature totals by month.

Reviews of airlines servicing Idaho Falls

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?

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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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?

100% Free

Book with Flexibility

Travel Smart

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 13 June 2025.