When did momondo last update prices for flights from Idaho Falls Fanning Field Airport to London?

Prices for flights from Idaho Falls Fanning Field Airport to London are updated daily.

How many operators does momondo search for flights from Idaho Falls Fanning Field Airport to London?

The number of operators available for flights from Idaho Falls Fanning Field Airport to London is 1 as of October 2025.

How old do you have to be to fly from Idaho Falls Fanning Field Airport to London?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Idaho Falls Fanning Field Airport to London.

What documentation or ID do you need to fly to London?

The necessary travel and health documents for your London trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$674 Cheap Flights from Idaho Falls to London in 2025/26

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Cheap round-trip flights

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10:45 am - 12:20 pmIDA-LHR

18h 35m1 stop

4:25 pm - 5:22 pmLHR-IDA

31h 57m2 stops

$743United Airlines

Find Deal

mar., abr. 7 - mar., abr. 14

7:00 am - 7:40 amIDA-LHR

17h 40m2 stops

4:25 pm - 5:22 pmLHR-IDA

31h 57m2 stops

$748United Airlines

Find Deal

mar., abr. 7 - mar., abr. 14

10:45 am - 11:10 amIDA-LHR

17h 25m2 stops

7:25 am - 9:28 amLHR-IDA

33h 03m2 stops

$753United Airlines

Find Deal

mar., abr. 7 - mar., abr. 14

1:05 pm - 9:50 amIDA-LHR

13h 45m1 stop

10:55 am - 6:14 pmLHR-IDA

14h 19m1 stop

$772KLM

Find Deal

mar., abr. 7 - mar., abr. 14

7:00 am - 12:20 pmIDA-LHR

22h 20m1 stop

7:25 am - 9:08 pmLHR-IDA

20h 43m2 stops

$793United Airlines

Find Deal

vie., abr. 3 - mar., abr. 7

5:57 pm - 12:20 pmIDA-LHR

11h 23m1 stop

11:25 am - 5:22 pmLHR-IDA

12h 57m1 stop

$822United Airlines

Find Deal

vie., abr. 3 - mar., abr. 7

6:45 pm - 8:00 pmIDA-LHR

18h 15m2 stops

10:15 am - 10:21 pmLHR-IDA

19h 06m2 stops

$869Delta

Find Deal

vie., abr. 3 - mar., abr. 7

1:16 pm - 10:00 amIDA-LHR

13h 44m1 stop

4:30 pm - 12:46 pmLHR-IDA

27h 16m1 stop

$969Multiple Airlines

Find Deal

jue., dic. 18 - mié., dic. 24

1:05 pm - 1:45 pmIDA-LHR

18h 40m2 stops

10:55 am - 10:21 pmLHR-IDA

18h 26m1 stop

$976Delta

Find Deal

vie., mar. 27 - mar., mar. 31

8:23 am - 1:15 pmIDA-LHR

22h 52m1 stop

10:05 am - 9:57 pmLHR-IDA

18h 52m1 stop

$1,006American Airlines

Find Deal

vie., mar. 27 - mar., mar. 31

American Airlines flights from Idaho Falls to London

Our best American Airlines deals on Idaho Falls to London flight tickets

American Airlines

Nov 6

IDA1:58 pmIdaho Falls Fanning Field

13h 02m

1 stop

LHR10:00 amLondon Heathrow

Nov 12

LHR10:05 amLondon Heathrow

19h 29m

2 stops

IDA10:34 pmIdaho Falls Fanning Field

$904

Find similar

American Airlines

Mar 27

IDA8:23 amIdaho Falls Fanning Field

22h 52m

1 stop

LHR1:15 pmLondon Heathrow

Mar 31

LHR10:05 amLondon Heathrow

18h 52m

1 stop

IDA9:57 pmIdaho Falls Fanning Field

$1,006

Find similar

American Airlines

Nov 6

IDA1:58 pmIdaho Falls Fanning Field

13h 02m

1 stop

LHR10:00 amLondon Heathrow

Nov 12

LHR2:25 pmLondon Heathrow

15h 09m

1 stop

IDA10:34 pmIdaho Falls Fanning Field

$1,261

Find similar

United Airlines flights from Idaho Falls to London

Our best United Airlines deals on Idaho Falls to London flight tickets

United Airlines

Nov 4

IDA2:45 pmIdaho Falls Fanning Field

33h 25m

2 stops

LHR7:10 amLondon Heathrow

Nov 11

LHR6:35 amLondon Heathrow

34h 13m

2 stops

IDA9:48 amIdaho Falls Fanning Field

$619

Find similar

United Airlines

Nov 5

IDA8:30 amIdaho Falls Fanning Field

16h 25m

2 stops

LHR7:55 amLondon Heathrow

Nov 11

LHR6:35 amLondon Heathrow

38h 00m

2 stops

IDA1:35 pmIdaho Falls Fanning Field

$623

Find similar

United Airlines

Nov 5

IDA2:45 pmIdaho Falls Fanning Field

11h 55m

1 stop

LHR9:40 amLondon Heathrow

Nov 12

LHR11:35 amLondon Heathrow

16h 28m

1 stop

IDA9:03 pmIdaho Falls Fanning Field

$649

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

mar. 4/7

10:45 am-12:20 pm

1 stop18h 35m

London Heathrow

mar. 4/14

4:25 pm-5:22 pm

2 stops31h 57m

$743

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

mar. 4/7

7:00 am-7:40 am

2 stops17h 40m

London Heathrow

mar. 4/14

4:25 pm-5:22 pm

2 stops31h 57m

$748

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

mar. 4/7

10:45 am-11:10 am

2 stops17h 25m

London Heathrow

mar. 4/14

7:25 am-9:28 am

2 stops33h 03m

$753

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

mar. 4/7

1:05 pm-9:50 am

1 stop13h 45m

London Heathrow

mar. 4/14

10:55 am-6:14 pm

1 stop14h 19m

$772

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

vie. 4/3

7:00 am-12:20 pm

1 stop22h 20m

London Heathrow

mar. 4/7

7:25 am-9:08 pm

2 stops20h 43m

$793

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

vie. 4/3

5:57 pm-12:20 pm

1 stop11h 23m

London Heathrow

mar. 4/7

11:25 am-5:22 pm

1 stop12h 57m

$822

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

vie. 4/3

6:45 pm-8:00 pm

2 stops18h 15m

London Heathrow

mar. 4/7

10:15 am-10:21 pm

2 stops19h 06m

$869

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

jue. 12/18

1:16 pm-10:00 am

1 stop13h 44m

London Heathrow

mié. 12/24

4:30 pm-12:46 pm

1 stop27h 16m

$969

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

vie. 3/27

1:05 pm-1:45 pm

2 stops18h 40m

London Heathrow

mar. 3/31

10:55 am-10:21 pm

1 stop18h 26m

$976

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

vie. 3/27

8:23 am-1:15 pm

1 stop22h 52m

London Heathrow

mar. 3/31

10:05 am-9:57 pm

1 stop18h 52m

$1,006

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from Idaho Falls to London

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to London?

The cheapest day to depart from Idaho Falls to London is on a Wednesday. Travelers who choose to depart for London on a Wednesday will often find tickets for as low as $914. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $1,486. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.

What is the cheapest time of day to depart on your flight to London?

Flying to London from Idaho Falls in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $914 when looking at flights departing in the afternoon. Flights to London are more costly in the morning, with an average ticket price of $1,424. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

Can stopping save me money on Idaho Falls to London flights?

You could potentially save up to 1% on your flight if you consider stops on a Idaho Falls to London flight.

When to book flights from Idaho Falls to London

Are you open to changing your travel dates? Check out the ideal times to fly from Idaho Falls to London according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Idaho Falls to London (IDA to LON) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Idaho Falls to London

Direct flights	None

There are no direct flights from Idaho Falls to London. There are no popular flight routes from Idaho Falls to London.

Search flight deals

How far is Idaho Falls Fanning Field to London by plane?
A flight from Idaho Falls Fanning Field to London will travel around 4715.6 mi. Flights usually cover this in 11h 23m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Idaho Falls Fanning Field Airport to London?
Prices for flights from Idaho Falls Fanning Field Airport to London are updated daily.
How many operators does momondo search for flights from Idaho Falls Fanning Field Airport to London?
The number of operators available for flights from Idaho Falls Fanning Field Airport to London is 1 as of October 2025.
How old do you have to be to fly from Idaho Falls Fanning Field Airport to London?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Idaho Falls Fanning Field Airport to London.
What documentation or ID do you need to fly to London?
The necessary travel and health documents for your London trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Idaho Falls to London?
momondo data reveals that the most frequently booked airline on the route from Idaho Falls to London is United Airlines, representing 100% of all bookings.

Best airlines flying from Idaho Falls to London

Compare and see reviews for airlines that fly from Idaho Falls to London with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $699	Free Cancellation	Rating 7.4 9,001 reviews		Search United Airlines flights

Gatwick

Hounslow

Milton Keynes

Dover

Luton

Slough

Guildford

Hayes

Dartford

Crawley

Brentwood

Chelmsford

Folkestone

Romford

Ilford

Cobham

Wembley

Stansted

Watford

Harrow

Why use momondo?

Why should I use momondo to find a flight deal from Idaho Falls to London?

It is quick and easy to find Idaho Falls to London flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to London that suits you.

Can I find flights from Idaho Falls to London with flexible booking policies on momondo?

Flights from Idaho Falls to London with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Idaho Falls to London?

momondo helps you find the best flight between Idaho Falls and London by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Idaho Falls to London right now. Can momondo alert me if prices change?

Price alerts on flights to London from Idaho Falls are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your London trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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jue. 11/27

jue. 12/4

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Find better results for your trip to the United Kingdom

Cheap flights from Idaho Falls to London from $743

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Idaho Falls to London departing on 4/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Idaho Falls to London

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

American Airlines flights from Idaho Falls to London

Our best American Airlines deals on Idaho Falls to London flight tickets

United Airlines flights from Idaho Falls to London

Our best United Airlines deals on Idaho Falls to London flight tickets

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

See travel insights to London from

How to get the cheapest flight ticket from Idaho Falls to London

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to London?

What is the cheapest time of day to depart on your flight to London?

Can stopping save me money on Idaho Falls to London flights?

You could potentially save up to 1% on your flight if you consider stops on a Idaho Falls to London flight.

When to book flights from Idaho Falls to London

Cheap Idaho Falls to London (IDA to LON) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Idaho Falls to London

Direct flights

How far is Idaho Falls Fanning Field to London by plane?

When did momondo last update prices for flights from Idaho Falls Fanning Field Airport to London?

How many operators does momondo search for flights from Idaho Falls Fanning Field Airport to London?

How old do you have to be to fly from Idaho Falls Fanning Field Airport to London?

What documentation or ID do you need to fly to London?

What is the most popular airline from Idaho Falls to London?

Best airlines flying from Idaho Falls to London

Compare and see reviews for airlines that fly from Idaho Falls to London with momondo

Traveling to a place near London?

Why use momondo?

Why should I use momondo to find a flight deal from Idaho Falls to London?

Can I find flights from Idaho Falls to London with flexible booking policies on momondo?

How can momondo help me find flights from Idaho Falls to London?

I’m not ready to book a flight from Idaho Falls to London right now. Can momondo alert me if prices change?

An easier way to manage your London trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London