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Cheap flights from London to Idaho Falls from £526

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London to Idaho Falls departing on 2/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
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
12:20 - 22:52
LHR
-
IDA
16h 32m
1 stop
Multiple Airlines Logo
06:00 - 15:35
IDA
-
LHR
26h 35m
1 stop
£873Multiple Airlines
Thu, 26 Mar - Thu, 2 Apr
Multiple Airlines Logo
06:20 - 17:19
LHR
-
IDA
16h 59m
2 stops
Multiple Airlines Logo
06:00 - 15:35
IDA
-
LHR
26h 35m
1 stop
£939Multiple Airlines
Thu, 26 Mar - Thu, 2 Apr
Multiple Airlines Logo
20:25 - 18:15
LHR
-
IDA
27h 50m
2 stops
Multiple Airlines Logo
13:11 - 15:35
IDA
-
LHR
19h 24m
2 stops
£1,117Multiple Airlines
Thu, 26 Mar - Thu, 2 Apr
United Airlines Logo
08:00 - 21:08
LHR
-
IDA
19h 08m
2 stops
United Airlines Logo
10:40 - 08:30
IDA
-
LHR
14h 50m
2 stops
£1,263United Airlines
Sat, 28 Mar - Sat, 4 Apr
Multiple Airlines Logo
10:20 - 12:27
LHR
-
IDA
32h 07m
3 stops
Multiple Airlines Logo
13:10 - 17:40
IDA
-
LHR
21h 30m
3 stops
£3,076Multiple Airlines
Thu, 26 Mar - Thu, 2 Apr

United Airlines flights from London to Idaho Falls

Our best United Airlines deals on London to Idaho Falls flight tickets
United Airlines
18 Feb
LHR11:35London Heathrow
16h 23m
1 stop
IDA20:58Idaho Falls Fanning Field
22 Feb
IDA17:33Idaho Falls Fanning Field
20h 02m
2 stops
LHR20:35London Heathrow
£1,092
United Airlines
18 Feb
LHR11:35London Heathrow
16h 23m
1 stop
IDA20:58Idaho Falls Fanning Field
22 Feb
IDA14:40Idaho Falls Fanning Field
22h 55m
2 stops
LHR20:35London Heathrow
£1,094
United Airlines
18 Feb
LHR10:00London Heathrow
17h 58m
2 stops
IDA20:58Idaho Falls Fanning Field
22 Feb
IDA17:33Idaho Falls Fanning Field
20h 47m
2 stops
LHR21:20London Heathrow
£1,096

Virgin Atlantic flights from London to Idaho Falls

Our best Virgin Atlantic deals on London to Idaho Falls flight tickets
Virgin Atlantic
14 Feb
LHR10:45London Heathrow
18h 36m
1 stop
IDA22:21Idaho Falls Fanning Field
16 Feb
IDA05:25Idaho Falls Fanning Field
21h 50m
2 stops
LHR10:15London Heathrow
£1,078
Virgin Atlantic
14 Feb
LHR10:10London Heathrow
19h 11m
2 stops
IDA22:21Idaho Falls Fanning Field
16 Feb
IDA05:25Idaho Falls Fanning Field
18h 25m
2 stops
LHR06:50London Heathrow
£1,095

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 12 February 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

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Thu 26/3

12:20-22:52

1 stop16h 32m

Idaho Falls Fanning Field

Thu 2/4

06:00-15:35

1 stop26h 35m

£873

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Thu 26/3

06:20-17:19

2 stops16h 59m

Idaho Falls Fanning Field

Thu 2/4

06:00-15:35

1 stop26h 35m

£939

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Thu 26/3

20:25-18:15

2 stops27h 50m

Idaho Falls Fanning Field

Thu 2/4

13:11-15:35

2 stops19h 24m

£1,117

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 28/3

08:00-21:08

2 stops19h 08m

Idaho Falls Fanning Field

Sat 4/4

10:40-08:30

2 stops14h 50m

£1,263

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Thu 26/3

10:20-12:27

3 stops32h 07m

Idaho Falls Fanning Field

Thu 2/4

13:10-17:40

3 stops21h 30m

£3,076

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 2/5

21:25-15:29

2 stops49h 04m

£526

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 2/5

06:00-22:40

3 stops23h 40m

£543

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 2/5

10:55-18:17

1 stop14h 22m

£553

LondonIdaho Falls

LGW - IDA

LGWIDA

London Gatwick

Sat 2/5

13:05-15:29

2 stops33h 24m

£593

LondonIdaho Falls

LGW - IDA

LGWIDA

London Gatwick

Sat 2/5

15:40-15:29

3 stops30h 49m

£645

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

What is the cheapest airline that flies from London to Idaho Falls Fanning Field?

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

Which airlines fly to Idaho Falls?

United Airlines, Lufthansa and Virgin Atlantic 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

17h 33m

Direct flights

None
The fastest flight from London to Idaho Falls takes 17h 33m
There are no direct flights from London to Idaho Falls. There are no popular flight routes from London to Idaho Falls.
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  • 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 17h 33m.

  • 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 £629Free CancellationRating
7.5
678 reviews
Search Virgin Atlantic flights
United AirlinesPriceFrom £745Free CancellationRating
7.4
9,281 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.

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