London

$496+ Cheap flights from Idaho Falls (IDA) to London (LON)

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 6/15. Fares are subject to change and may not be available on all flights or dates of travel.
IDA — LON
May 4 — May 111
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Cheap flight deals from Idaho Falls to London

Discover tips and strategies to find the most affordable flight options for your journey from Idaho Falls (IDA) to London (LON). 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 April 29, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$1,077
(American Airlines)

One-way from

$496
(Kiwi.com)

Popular in

December

Cheapest in

November

Average price

$759
Provider with most accurate pricing for Idaho Falls Fanning Field-London (LON) flight deals.
Provider most trusted by Cheapflights users for Idaho Falls Fanning Field-London (LON) flights.
From Idaho Falls Fanning Field to London (LON)
One-way flight from Idaho Falls Fanning Field to London (LON)
Highest demand for flights based on searches. 3% potential increase in price ($43 potential increase over avg. RT price).
Cheapest flight prices on average. 8% potential price decrease ($87 potential savings vs. average RT price).
Average for round-trip flights in April 2025

Find flight deals from Idaho Falls to London

Cheapest flights from Idaho Falls to London
Explore the most affordable flight options available from Idaho Falls to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2025.

This American Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/316:51 amIDA - LHR
1 stop16h 34mAmerican Airlines
Fri 8/88:50 amLHR - IDA
2 stops19h 29mAmerican Airlines
Deal found 4/28$1,077
This United Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/317:00 amIDA - LHR
2 stops16h 20mUnited Airlines
Fri 8/82:05 pmLHR - IDA
2 stops34h 17mUnited Airlines
Deal found 4/28$1,089
This Air France deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/22:55 pmIDA - LHR
1 stop11h 55mMultiple Airlines
Tue 8/126:15 amLHR - IDA
2 stops18h 57mMultiple Airlines
Deal found 4/28$3,936
This Air France deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/111:20 amIDA - LHR
2 stops14h 35mAir France
Tue 8/126:15 amLHR - IDA
2 stops18h 57mAir France
Deal found 4/28$3,941
This KLM deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/306:52 pmIDA - LHR
2 stops15h 43mKLM
Fri 8/86:30 amLHR - IDA
2 stops18h 42mKLM
Deal found 4/28$5,049

Cheapflights Fare Finder

Customize your flight search to find flights from Idaho Falls to London 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 2,558,603 searches. Data last updated April 29, 2025.
Use the filters below to find and compare flights from Idaho Falls to London that are best for you.

Fly from

Idaho Falls

Fly to

London

Route

Depart

Return

Price

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Thu 7/31

6:51 am-12:45 pm

1 stop22h 54m

London Heathrow

Fri 8/8

8:50 am-9:19 pm

2 stops19h 29m

$1,077

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Thu 7/31

7:00 am-6:20 am

2 stops16h 20m

London Heathrow

Fri 8/8

2:05 pm-5:22 pm

2 stops34h 17m

$1,089

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Sat 8/2

2:55 pm-9:50 am

1 stop11h 55m

London Heathrow

Tue 8/12

6:15 am-6:12 pm

2 stops18h 57m

$3,936

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Fri 8/1

11:20 am-8:55 am

2 stops14h 35m

London Heathrow

Tue 8/12

6:15 am-6:12 pm

2 stops18h 57m

$3,941

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Wed 7/30

6:52 pm-5:35 pm

2 stops15h 43m

London Heathrow

Fri 8/8

6:30 am-6:12 pm

2 stops18h 42m

$5,049

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Sun 6/15

6:15 am-8:20 pm

2 stops31h 05m

$496

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Sun 6/15

1:51 pm-12:45 pm

1 stop15h 54m

$853

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/27

Compare providers for flights from Idaho Falls to London

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Idaho Falls to London in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Idaho Falls-London flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Idaho Falls-London flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Idaho Falls-London flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Idaho Falls-London flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Idaho Falls-London flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Idaho Falls to London

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

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

Currently, November is the cheapest month in which you can book a flight from Idaho Falls to London (average of $661). Flying from Idaho Falls to London in June is currently the most expensive (average of $1,110). 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 is the cheapest time of day to fly from IDA to LON?

Find hourly flight availability from Idaho Falls to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 29, 2025.

It’s typically best to fly out from Idaho Falls to London in the afternoon. Doing so could potentially save you 36% on the flight price compared to flying in the morning, which is usually more expensive.

Rainfall in London by month

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

In terms of precipitation, rainfall in London ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London when rainfall is around 1.6 in.

Temperature in London by month

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

If weather is an important factor for your trip to London, 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 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. 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 London. Reviews last updated April 29, 2025.

Comfort

7.7

Entertainment

7.1

Crew

8.4

Overall

7.8

Boarding

7.8

Food

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.

Comfort

7.7

Entertainment

7.1

Crew

8.4

Overall

7.8

Boarding

7.8

Food

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.

Comfort

7.7

Entertainment

7.1

Crew

8.4

Overall

7.8

Boarding

7.8

Food

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.

Comfort

7.7

Entertainment

7.1

Crew

8.4

Overall

7.8

Boarding

7.8

Food

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.

Comfort

7.7

Entertainment

7.1

Crew

8.4

Overall

7.8

Boarding

7.8

Food

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.

Related info for your journey

Find useful and relevant information for your journey from Idaho Falls to London. 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 from for flights from Idaho Falls to London?

    Located just 3.8 mi from the city center, Idaho Falls Fanning Field is the airport most travelers will use when flying to London from Idaho Falls. Booking flights from Fanning Field (IDA) to London should be relatively easy as there are 0 daily outbound flights to London from 2 different airlines.

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

    Cheapflights users have booked flights from Idaho Falls to London round-trip from $1,077. Other airlines that can offer you cheap pricing are United Airlines, from $1,089, and Air France, from $3,941. You may be able to fly from Idaho Falls to London for 1% less than the average price by searching for these airlines.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Idaho Falls to London 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 Idaho Falls to London?

    Currently, November is the cheapest month in which you can book a flight from Idaho Falls to London (average of $661). Flying from Idaho Falls to London in June is currently the most expensive (average of $1,110). 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

Traveling to a place near Idaho Falls?

Book flights to Idaho Falls if you plan to visit one of these locations
Hayes
Hounslow
Thornton Heath
Luton
Horley
Canterbury
Harrow
Wembley
Dover
Gatwick
Orpington
Watford
Croydon
Borehamwood
Folkestone
Ilford
Aylesbury
Chelmsford
Sutton
Brentwood

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Top 2 airlines flying from Idaho Falls to London

Discover the top 2 airlines that operate flights from Idaho Falls to London. 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 2,558,603 searches. Data last updated April 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$720Average$1,392FlexibilityNo cancel feeOn-time69%
DeltaCheapest$815Average$1,207FlexibilityNo cancel feeOn-timeN/A

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