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 $762. Another airline that can offer you cheap pricing is American Airlines. You may be able to fly from Idaho Falls to London for 32% less than the average price by searching for these airlines.

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

Travelers seeking maximum savings on their Idaho Falls to London flight should consider departing on Thursday afternoons when fares are most often at their lowest. Friday at noon 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 Idaho Falls to London?

Users have found that flying from Idaho Falls to London on a Sunday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

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

The best pricing can be found in the month of November. Prices to London from Idaho Falls average $1,131. You can even find prices in November for less than $1,131, as users have found deals to London from as low as $666. The month of December appears to be one of the more expensive times to travel to London from Idaho Falls. Flying in the targeted month can save you up to 72%.

Most accurate provider : When it comes to deals on Idaho Falls-London flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Idaho Falls-London flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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.

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.

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.

$762+ Flights from Idaho Falls to London

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Cheap flight deals from Idaho Falls to London

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$762 (United Airlines)
Popular in	December
Cheapest in	November
Average price	$747

Provider with most accurate pricing for Idaho Falls Fanning Field-London (LON) flight deals.

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Provider most trusted by Cheapflights users for Idaho Falls Fanning Field-London (LON) flights.

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From Idaho Falls Fanning Field to London (LON)

Search Deals

Highest demand for flights based on searches. 0% potential increase in price ($7 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 8% potential price decrease ($92 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in March 2025

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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 March 31, 2025.

Mon 4/212:20 pmIDA - LHR

1 stop15h 00mUnited Airlines

Tue 5/69:00 amLHR - IDA

2 stops31h 32mUnited Airlines

Deal found 3/31

$762

Mon 11/31:50 pmIDA - LHR

1 stop14h 50mMultiple Airlines

Tue 11/254:30 pmLHR - IDA

1 stop26h 49mMultiple Airlines

Deal found 3/30

$778

Mon 11/311:20 amIDA - LHR

2 stops18h 20mVirgin Atlantic

Tue 11/2512:20 pmLHR - IDA

2 stops17h 00mVirgin Atlantic

Deal found 3/30

$787

Mon 4/2112:59 pmIDA - LHR

2 stops16h 16mAmerican Airlines

Tue 5/68:50 amLHR - IDA

2 stops19h 27mAmerican Airlines

Deal found 3/31

$798

Mon 11/34:00 pmIDA - LHR

1 stop32h 00mAlaska Airlines

Tue 11/253:00 pmLHR - IDA

1 stop14h 38mAlaska Airlines

Deal found 3/30

$4,366

Best flights from Idaho Falls to London
Discover carefully curated flight deals from Idaho Falls to London that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 31, 2025.

Mon 4/212:20 pmIDA - LHR

1 stop15h 00mUnited Airlines

Tue 5/69:00 amLHR - IDA

2 stops31h 32mUnited Airlines

Deal found 3/31

$762

Mon 4/2112:59 pmIDA - LHR

2 stops16h 16mAmerican Airlines

Tue 5/68:50 amLHR - IDA

2 stops19h 27mAmerican Airlines

Deal found 3/31

$798

Last-minute flights from Idaho Falls to London
Discover last-minute flight deals from Idaho Falls to London. Data last updated March 31, 2025 and is based on user searches.

Mon 4/212:20 pmIDA - LHR

1 stop15h 00mUnited Airlines

Tue 5/69:00 amLHR - IDA

2 stops31h 32mUnited Airlines

Deal found 3/31

$762

Mon 4/2112:59 pmIDA - LHR

2 stops16h 16mAmerican Airlines

Tue 5/68:50 amLHR - IDA

2 stops19h 27mAmerican Airlines

Deal found 3/31

$798

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Mon 4/21

2:20 pm-12:20 pm

1 stop15h 00m

London Heathrow

Tue 5/6

9:00 am-9:32 am

2 stops31h 32m

$762

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Mon 4/21

12:59 pm-12:15 pm

2 stops16h 16m

London Heathrow

Tue 5/6

8:50 am-9:17 pm

2 stops19h 27m

$798

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

Compare providers for flights from Idaho Falls to London

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 March.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
AranGrant	Price Accuracy3 stars	Trust Score*1 star

*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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Idaho Falls-London flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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?

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

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

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

United Airlines

7.4

Good

8,614 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

United Airlines

7.4

Good

8,614 reviews

United Airlines

7.4

Good

8,614 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

American Airlines

7.2

Good

10,000 reviews

United Airlines

7.4

Good

8,614 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

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 $762. Another airline that can offer you cheap pricing is American Airlines. You may be able to fly from Idaho Falls to London for 32% 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

Hounslow

Hayes

Thornton Heath

Luton

Wembley

Harrow

Horley

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Dover

Gatwick

Orpington

Watford

Milton Keynes

Croydon

Borehamwood

Folkestone

Ilford

Aylesbury

Chelmsford

Sutton

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Top 2 airlines flying from Idaho Falls to London

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$720	Average$1,392	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$815	Average$1,207	FlexibilityNo cancel fee	On-timeN/A

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$762+ Cheap flights from Idaho Falls (IDA) to London (LON)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/21. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Idaho Falls to London with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Idaho Falls to London

Most accurate provider

Most trusted provider

Round-trip from

Popular in

Cheapest in

Average price

Find flight deals from Idaho Falls to London

Cheapest flights from Idaho Falls to LondonExplore 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 March 31, 2025.

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 March 31, 2025.

Cheapflights Fare Finder

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

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 March.

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.

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?

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 March 31, 2025.

Rainfall in London by month

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

Temperature in London by month

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

Reviews of airlines servicing London

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?

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

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

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

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

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

Traveling to a place near Idaho Falls?

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Alternative routes for Idaho Falls to London

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Top 2 airlines flying from Idaho Falls to London

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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 March 31, 2025.