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Cheap flights from London to Idaho Falls from £715

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from London to Idaho Falls departing on 14/4. 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 London to Idaho Falls

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
13:05 - 16:19
LHR
-
IDA
34h 14m
2 stops
Multiple Airlines Logo
06:00 - 20:20
IDA
-
LHR
31h 20m
2 stops
£715Multiple Airlines
Tue, 14 Apr - Tue, 21 Apr
Multiple Airlines Logo
15:40 - 22:52
LGW
-
IDA
38h 12m
2 stops
Multiple Airlines Logo
06:00 - 14:40
IDA
-
LGW
25h 40m
2 stops
£752Multiple Airlines
Tue, 14 Apr - Tue, 21 Apr
Multiple Airlines Logo
13:05 - 22:53
LHR
-
IDA
16h 48m
2 stops
Multiple Airlines Logo
13:54 - 20:20
IDA
-
LHR
23h 26m
2 stops
£770Multiple Airlines
Wed, 13 May - Wed, 20 May
Multiple Airlines Logo
13:00 - 22:56
LGW
-
IDA
16h 56m
2 stops
Multiple Airlines Logo
13:45 - 14:40
IDA
-
LGW
17h 55m
2 stops
£795Multiple Airlines
Tue, 1 Sep - Fri, 25 Sep
Multiple Airlines Logo
21:25 - 22:56
LHR
-
IDA
32h 31m
2 stops
Multiple Airlines Logo
13:45 - 20:20
IDA
-
LHR
23h 35m
2 stops
£802Multiple Airlines
Tue, 1 Sep - Fri, 25 Sep
Multiple Airlines Logo
15:40 - 22:56
LGW
-
IDA
38h 16m
2 stops
Multiple Airlines Logo
13:45 - 14:40
IDA
-
LGW
17h 55m
2 stops
£803Multiple Airlines
Tue, 1 Sep - Fri, 25 Sep
Multiple Airlines Logo
21:25 - 22:56
LHR
-
IDA
32h 31m
2 stops
Multiple Airlines Logo
13:45 - 20:20
IDA
-
LHR
23h 35m
2 stops
£804Multiple Airlines
Tue, 1 Sep - Fri, 25 Sep
Multiple Airlines Logo
13:00 - 22:56
LGW
-
IDA
16h 56m
2 stops
Multiple Airlines Logo
13:45 - 14:40
IDA
-
LGW
17h 55m
2 stops
£804Multiple Airlines
Tue, 1 Sep - Fri, 25 Sep
KLM Logo
06:30 - 18:17
LHR
-
IDA
18h 47m
2 stops
KLM Logo
13:09 - 13:05
IDA
-
LHR
16h 56m
2 stops
£809KLM
Mon, 27 Apr - Mon, 4 May
Delta Logo
06:30 - 18:17
LHR
-
IDA
18h 47m
2 stops
Delta Logo
18:58 - 20:10
IDA
-
LHR
18h 12m
2 stops
£829Delta
Tue, 28 Apr - Tue, 5 May

Alaska Airlines flights from London to Idaho Falls

Our best Alaska Airlines deals on London to Idaho Falls flight tickets
Alaska Airlines
3 Jun
LHR17:00London Heathrow
29h 26m
1 stop
IDA15:26Idaho Falls Fanning Field
16 Jun
IDA13:43Idaho Falls Fanning Field
18h 22m
1 stop
LHR15:05London Heathrow
£892
Alaska Airlines
3 Jun
LHR17:00London Heathrow
29h 26m
1 stop
IDA15:26Idaho Falls Fanning Field
13 Jun
IDA13:43Idaho Falls Fanning Field
18h 22m
1 stop
LHR15:05London Heathrow
£908
Alaska Airlines
5 Jun
LHR17:00London Heathrow
29h 26m
1 stop
IDA15:26Idaho Falls Fanning Field
15 Jun
IDA13:43Idaho Falls Fanning Field
18h 22m
1 stop
LHR15:05London Heathrow
£918

American Airlines flights from London to Idaho Falls

Our best American Airlines deals on London to Idaho Falls flight tickets
American Airlines
7 Jun
LHR17:10London Heathrow
27h 34m
2 stops
IDA13:44Idaho Falls Fanning Field
16 Jun
IDA12:44Idaho Falls Fanning Field
15h 31m
1 stop
LHR11:15London Heathrow
£896
American Airlines
7 Jun
LHR17:10London Heathrow
27h 34m
2 stops
IDA13:44Idaho Falls Fanning Field
15 Jun
IDA12:44Idaho Falls Fanning Field
15h 31m
1 stop
LHR11:15London Heathrow
£903
American Airlines
3 Jun
LHR20:10London Heathrow
24h 34m
2 stops
IDA13:44Idaho Falls Fanning Field
16 Jun
IDA07:00Idaho Falls Fanning Field
20h 15m
2 stops
LHR10:15London Heathrow
£913

momondo Fare Finder

 
Customise your flight search to find flights from London to Idaho Falls 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 279,928 searches. Data last updated 3 April 2026.
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

Cheapest return flight

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 14/4

13:05-16:19

2 stops34h 14m

Idaho Falls Fanning Field

Tue 21/4

06:00-20:20

2 stops31h 20m

£715

LondonIdaho Falls

LGW - IDA

LGWIDA

London Gatwick

Tue 14/4

15:40-22:52

2 stops38h 12m

Idaho Falls Fanning Field

Tue 21/4

06:00-14:40

2 stops25h 40m

£752

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Wed 13/5

13:05-22:53

2 stops16h 48m

Idaho Falls Fanning Field

Wed 20/5

13:54-20:20

2 stops23h 26m

£770
Fastest return journey

LondonIdaho Falls

LGW - IDA

LGWIDA

London Gatwick

Tue 1/9

13:00-22:56

2 stops16h 56m

Idaho Falls Fanning Field

Fri 25/9

13:45-14:40

2 stops17h 55m

£795

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 1/9

21:25-22:56

2 stops32h 31m

Idaho Falls Fanning Field

Fri 25/9

13:45-20:20

2 stops23h 35m

£802

LondonIdaho Falls

LGW - IDA

LGWIDA

London Gatwick

Tue 1/9

15:40-22:56

2 stops38h 16m

Idaho Falls Fanning Field

Fri 25/9

13:45-14:40

2 stops17h 55m

£803

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 1/9

21:25-22:56

2 stops32h 31m

Idaho Falls Fanning Field

Fri 25/9

13:45-20:20

2 stops23h 35m

£804

LondonIdaho Falls

LGW - IDA

LGWIDA

London Gatwick

Tue 1/9

13:00-22:56

2 stops16h 56m

Idaho Falls Fanning Field

Fri 25/9

13:45-14:40

2 stops17h 55m

£804

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Mon 27/4

06:30-18:17

2 stops18h 47m

Idaho Falls Fanning Field

Mon 4/5

13:09-13:05

2 stops16h 56m

£809

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 28/4

06:30-18:17

2 stops18h 47m

Idaho Falls Fanning Field

Tue 5/5

18:58-20:10

2 stops18h 12m

£828

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

See travel insights to Idaho Falls from

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

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

Which airlines fly to Idaho Falls?

United Airlines, Virgin Atlantic and Lufthansa are the top three most popular airlines that fly to Idaho Falls from London according to our data. United Airlines is the first choice among our users, with 57% of people opting to fly with this airline when travelling to Idaho Falls. Keep in mind that there are 3 different airlines that fly to Idaho Falls on a routine basis, so you have a few additional options to choose from.

When to book flights from London to Idaho Falls

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

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

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

Fastest flight time

16h 51m

Direct flights

None
The fastest flight from London to Idaho Falls takes 16h 51m
There are no direct flights from London to Idaho Falls. There are no popular flight routes from London to Idaho Falls.
Search flight deals

Frequently asked questions about flying from London to Idaho Falls

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

    The distance between London and Idaho Falls Fanning Field is about 4715.6 mi. By plane, this route typically takes 16h 51m.

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

    Prices for flights from London to Idaho Falls Fanning Field Airport are refreshed on a daily basis.

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London to Idaho Falls Fanning Field Airport.

  • What documentation or ID do you need to fly to Idaho Falls Fanning Field Airport?

    The travel and health documents required for your trip to Idaho Falls Fanning Field Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Idaho Falls Fanning Field Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

Best airlines flying from London to Idaho Falls

Compare and see reviews for airlines that fly from London to Idaho Falls with momondo
Airline
Rating
Free Cancellation
Price
Virgin AtlanticPriceFrom £681Free CancellationRating
7.5
685 reviews
Search Virgin Atlantic flights
United AirlinesPriceFrom £770Free CancellationRating
7.4
9,539 reviews
Search United Airlines flights

Why use momondo?

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

It is quick and easy to find London to Idaho Falls 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 Idaho Falls that suits you.

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

Flights from London to Idaho Falls 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 London to Idaho Falls?

momondo helps you find the best flight between London and Idaho Falls 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 London to Idaho Falls right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Idaho Falls, momondo offers a useful price alert feature which will track prices for flights to Idaho Falls from London and alert you when they change.

An easier way to manage your Idaho Falls trip

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