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Cheap flights from Idaho Falls to London from $469

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Idaho Falls to London departing on 2/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Idaho Falls to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
2:40 pm - 9:40 am
IDA
-
LHR
12h 00m
1 stop
United Airlines Logo
6:35 am - 9:06 pm
LHR
-
IDA
20h 31m
2 stops
$633United Airlines
lun., mar. 2 - vie., mar. 13
United Airlines Logo
5:33 pm - 7:10 am
IDA
-
LHR
30h 37m
2 stops
United Airlines Logo
6:35 am - 9:56 am
LHR
-
IDA
33h 21m
2 stops
$637United Airlines
lun., mar. 2 - vie., mar. 13
United Airlines Logo
2:31 pm - 12:20 pm
IDA
-
LHR
14h 49m
1 stop
United Airlines Logo
6:55 am - 9:55 am
LHR
-
IDA
34h 00m
2 stops
$646United Airlines
mar., may. 5 - vie., may. 15
United Airlines Logo
5:20 pm - 9:40 am
IDA
-
LHR
33h 20m
1 stop
United Airlines Logo
9:00 am - 9:53 am
LHR
-
IDA
31h 53m
2 stops
$649United Airlines
mar., abr. 7 - mar., abr. 14
United Airlines Logo
10:40 am - 9:40 am
IDA
-
LHR
16h 00m
1 stop
United Airlines Logo
6:55 am - 9:55 am
LHR
-
IDA
34h 00m
2 stops
$650United Airlines
mar., may. 5 - vie., may. 15
United Airlines Logo
5:20 pm - 10:00 am
IDA
-
LHR
33h 40m
2 stops
United Airlines Logo
9:00 am - 9:53 am
LHR
-
IDA
31h 53m
2 stops
$653United Airlines
mar., abr. 7 - mar., abr. 14
United Airlines Logo
2:40 pm - 9:40 am
IDA
-
LHR
12h 00m
1 stop
United Airlines Logo
11:35 am - 9:56 am
LHR
-
IDA
28h 21m
1 stop
$662United Airlines
lun., mar. 2 - vie., mar. 13
United Airlines Logo
5:26 pm - 12:20 pm
IDA
-
LHR
11h 54m
1 stop
United Airlines Logo
2:50 pm - 9:55 am
LHR
-
IDA
26h 05m
1 stop
$675United Airlines
mar., may. 5 - vie., may. 15
United Airlines Logo
10:40 am - 12:20 pm
IDA
-
LHR
18h 40m
1 stop
United Airlines Logo
11:25 am - 9:53 am
LHR
-
IDA
29h 28m
1 stop
$678United Airlines
mar., abr. 7 - mar., abr. 14
American Airlines Logo
1:43 pm - 1:55 pm
IDA
-
LHR
17h 12m
2 stops
American Airlines Logo
4:10 pm - 11:39 pm
LHR
-
IDA
14h 29m
1 stop
$679American Airlines
mar., may. 5 - vie., may. 15

American Airlines flights from Idaho Falls to London

Our best American Airlines deals on Idaho Falls to London flight tickets
American Airlines
May 5
IDA1:43 pmIdaho Falls Fanning Field
17h 12m
2 stops
LHR1:55 pmLondon Heathrow
May 15
LHR4:10 pmLondon Heathrow
14h 29m
1 stop
IDA11:39 pmIdaho Falls Fanning Field
$679
American Airlines
May 5
IDA1:43 pmIdaho Falls Fanning Field
17h 12m
2 stops
LHR1:55 pmLondon Heathrow
May 15
LHR10:05 amLondon Heathrow
20h 34m
2 stops
IDA11:39 pmIdaho Falls Fanning Field
$794
American Airlines
Apr 10
IDA1:43 pmIdaho Falls Fanning Field
17h 12m
2 stops
LHR1:55 pmLondon Heathrow
Apr 19
LHR4:10 pmLondon Heathrow
14h 29m
1 stop
IDA11:39 pmIdaho Falls Fanning Field
$897

United Airlines flights from Idaho Falls to London

Our best United Airlines deals on Idaho Falls to London flight tickets
United Airlines
Mar 2
IDA2:40 pmIdaho Falls Fanning Field
12h 00m
1 stop
LHR9:40 amLondon Heathrow
Mar 13
LHR6:35 amLondon Heathrow
20h 31m
2 stops
IDA9:06 pmIdaho Falls Fanning Field
$633
United Airlines
Mar 2
IDA5:33 pmIdaho Falls Fanning Field
30h 37m
2 stops
LHR7:10 amLondon Heathrow
Mar 13
LHR6:35 amLondon Heathrow
33h 21m
2 stops
IDA9:56 amIdaho Falls Fanning Field
$637
United Airlines
May 5
IDA2:31 pmIdaho Falls Fanning Field
14h 49m
1 stop
LHR12:20 pmLondon Heathrow
May 15
LHR6:55 amLondon Heathrow
34h 00m
2 stops
IDA9:55 amIdaho Falls Fanning Field
$646

momondo 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, momondo users made 832,500 searches. Data last updated enero 29, 2026.
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

lun. 3/2

2:40 pm-9:40 am

1 stop12h 00m

London Heathrow

vie. 3/13

6:35 am-9:06 pm

2 stops20h 31m

$633

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

lun. 3/2

5:33 pm-7:10 am

2 stops30h 37m

London Heathrow

vie. 3/13

6:35 am-9:56 am

2 stops33h 21m

$637

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

mar. 5/5

2:31 pm-12:20 pm

1 stop14h 49m

London Heathrow

vie. 5/15

6:55 am-9:55 am

2 stops34h 00m

$646

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

mar. 4/7

5:20 pm-9:40 am

1 stop33h 20m

London Heathrow

mar. 4/14

9:00 am-9:53 am

2 stops31h 53m

$649

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

mar. 5/5

10:40 am-9:40 am

1 stop16h 00m

London Heathrow

vie. 5/15

6:55 am-9:55 am

2 stops34h 00m

$650

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

mar. 4/7

5:20 pm-10:00 am

2 stops33h 40m

London Heathrow

mar. 4/14

9:00 am-9:53 am

2 stops31h 53m

$653

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

lun. 3/2

2:40 pm-9:40 am

1 stop12h 00m

London Heathrow

vie. 3/13

11:35 am-9:56 am

1 stop28h 21m

$662

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

mar. 5/5

5:26 pm-12:20 pm

1 stop11h 54m

London Heathrow

vie. 5/15

2:50 pm-9:55 am

1 stop26h 05m

$675

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

mar. 4/7

10:40 am-12:20 pm

1 stop18h 40m

London Heathrow

mar. 4/14

11:25 am-9:53 am

1 stop29h 28m

$678

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

mar. 5/5

1:43 pm-1:55 pm

2 stops17h 12m

London Heathrow

vie. 5/15

4:10 pm-11:39 pm

1 stop14h 29m

$679

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
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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 airline that flies from Idaho Falls Fanning Field to London?

Delta is the most popular carrier operating from Idaho Falls Fanning Field to London

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

Fastest flight time

12h 00m

Direct flights

None
The fastest flight from Idaho Falls to London takes 12h 00m
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 12h 00m, 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?

  • 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?

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 AirlinesPriceFrom $699Free CancellationRating
7.4
9,215 reviews
Search United Airlines flights

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Hounslow
Milton Keynes
Luton
Dover
Slough
Guildford
Crawley
Wembley
Dartford
Hayes
Brentwood
Harrow
Watford
Cobham
Folkestone
Romford
Stansted
Croydon
Richmond

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.

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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
London City Airport
London Gatwick Airport
London Heathrow Airport
London Luton Airport
London Southend Airport
London Stansted Airport