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Cheap flights from London to Idaho Falls from £735

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 24/4. 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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American Airlines Logo
10:05 - 21:56LHR-IDA
18h 51m1 stop
American Airlines Logo
13:45 - 06:15IDA-LHR
33h 30m2 stops
£735American Airlines
Find Deal
Fri, 24 Apr - Tue, 28 Apr
American Airlines Logo
14:25 - 12:27LHR-IDA
29h 02m2 stops
American Airlines Logo
13:45 - 06:15IDA-LHR
33h 30m2 stops
£737American Airlines
Find Deal
Fri, 24 Apr - Tue, 28 Apr
American Airlines Logo
08:20 - 21:56LHR-IDA
20h 36m2 stops
American Airlines Logo
13:45 - 06:15IDA-LHR
33h 30m2 stops
£745American Airlines
Find Deal
Fri, 24 Apr - Tue, 28 Apr
American Airlines Logo
10:05 - 21:56LHR-IDA
18h 51m1 stop
American Airlines Logo
13:45 - 10:45IDA-LHR
14h 00m1 stop
£763American Airlines
Find Deal
Fri, 24 Apr - Tue, 28 Apr
American Airlines Logo
10:05 - 21:56LHR-IDA
18h 51m1 stop
American Airlines Logo
08:24 - 10:50IDA-LHR
19h 26m1 stop
£765American Airlines
Find Deal
Fri, 24 Apr - Tue, 28 Apr
American Airlines Logo
16:25 - 12:27LHR-IDA
27h 02m1 stop
American Airlines Logo
13:45 - 10:45IDA-LHR
14h 00m1 stop
£766American Airlines
Find Deal
Fri, 24 Apr - Tue, 28 Apr
American Airlines Logo
12:30 - 13:27LGW-IDA
31h 57m2 stops
American Airlines Logo
13:58 - 07:30IDA-LGW
34h 32m2 stops
£960American Airlines
Find Deal
Mon, 1 Dec - Mon, 8 Dec
United Airlines Logo
18:00 - 21:12LHR-IDA
34h 12m2 stops
United Airlines Logo
14:45 - 09:40IDA-LHR
11h 55m1 stop
£1,218United Airlines
Find Deal
Mon, 1 Dec - Mon, 8 Dec
Multiple Airlines Logo
16:30 - 13:27LHR-IDA
27h 57m1 stop
Multiple Airlines Logo
13:58 - 10:00IDA-LHR
13h 02m1 stop
£1,257Multiple Airlines
Find Deal
Mon, 1 Dec - Mon, 8 Dec
United Airlines Logo
16:20 - 09:58LHR-IDA
24h 38m2 stops
United Airlines Logo
14:40 - 09:40IDA-LHR
12h 00m1 stop
£1,453United Airlines
Find Deal
Sat, 3 Jan - Sat, 10 Jan

American Airlines flights from London to Idaho Falls

Our best American Airlines deals on London to Idaho Falls flight tickets
American Airlines
24 Apr
LHR14:25London Heathrow
29h 02m
2 stops
IDA12:27Idaho Falls Fanning Field
28 Apr
IDA13:45Idaho Falls Fanning Field
33h 30m
2 stops
LHR06:15London Heathrow
£737
Find similar
American Airlines
24 Apr
LHR08:20London Heathrow
20h 36m
2 stops
IDA21:56Idaho Falls Fanning Field
28 Apr
IDA13:45Idaho Falls Fanning Field
33h 30m
2 stops
LHR06:15London Heathrow
£745
Find similar
American Airlines
24 Apr
LHR10:05London Heathrow
18h 51m
2 stops
IDA21:56Idaho Falls Fanning Field
28 Apr
IDA13:45Idaho Falls Fanning Field
33h 30m
2 stops
LHR06:15London Heathrow
£746
Find similar

Lufthansa flights from London to Idaho Falls

Our best Lufthansa deals on London to Idaho Falls flight tickets
Lufthansa
1 Dec
LHR16:20London Heathrow
28h 14m
2 stops
IDA13:34Idaho Falls Fanning Field
8 Dec
IDA10:58Idaho Falls Fanning Field
15h 42m
1 stop
LHR09:40London Heathrow
£1,175
Find similar
Lufthansa
1 Dec
LHR11:35London Heathrow
16h 28m
1 stop
IDA21:03Idaho Falls Fanning Field
4 Dec
IDA10:58Idaho Falls Fanning Field
15h 42m
1 stop
LHR09:40London Heathrow
£4,060
Find similar

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 20 November 2025.
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

Fri 24/4

10:05-21:56

1 stop18h 51m

Idaho Falls Fanning Field

Tue 28/4

13:45-06:15

2 stops33h 30m

£735

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Fri 24/4

14:25-12:27

2 stops29h 02m

Idaho Falls Fanning Field

Tue 28/4

13:45-06:15

2 stops33h 30m

£737

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Fri 24/4

08:20-21:56

2 stops20h 36m

Idaho Falls Fanning Field

Tue 28/4

13:45-06:15

2 stops33h 30m

£745

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Fri 24/4

10:05-21:56

1 stop18h 51m

Idaho Falls Fanning Field

Tue 28/4

13:45-10:45

1 stop14h 00m

£763

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Fri 24/4

10:05-21:56

1 stop18h 51m

Idaho Falls Fanning Field

Tue 28/4

08:24-10:50

1 stop19h 26m

£765

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Fri 24/4

16:25-12:27

1 stop27h 02m

Idaho Falls Fanning Field

Tue 28/4

13:45-10:45

1 stop14h 00m

£766

LondonIdaho Falls

LGW - IDA

LGWIDA

London Gatwick

Mon 1/12

12:30-13:27

2 stops31h 57m

Idaho Falls Fanning Field

Mon 8/12

13:58-07:30

2 stops34h 32m

£960

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Mon 1/12

18:00-21:12

2 stops34h 12m

Idaho Falls Fanning Field

Mon 8/12

14:45-09:40

1 stop11h 55m

£1,218

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Mon 1/12

16:30-13:27

1 stop27h 57m

Idaho Falls Fanning Field

Mon 8/12

13:58-10:00

1 stop13h 02m

£1,257

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 3/1

16:20-09:58

2 stops24h 38m

Idaho Falls Fanning Field

Sat 10/1

14:40-09:40

1 stop12h 00m

£1,453

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 day to depart on your flight to Idaho Falls?

According to our data, Tuesday is the cheapest day to fly to Idaho Falls from London. The lowest ticket price found for a Tuesday departure recently was £706. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. On the other hand, Saturday is the most expensive day to depart from London because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £974.

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

The cheapest time of day to fly to Idaho Falls is in the afternoon when flights can be purchased for as low as £794. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are £911 on average. Flights to Idaho Falls from London in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

Direct flights

None
There are no direct flights from London to Idaho Falls. There are no popular flight routes from London to Idaho Falls.
Search flight deals

  • 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 28m.

  • 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 £665Free CancellationRating
7.5
673 reviews
Search Virgin Atlantic flights
United AirlinesPriceFrom £776Free CancellationRating
7.4
9,023 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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