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Cheap flights from London to Idaho Falls from £655

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 22/11. 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 (LON-IDA)

Cheap return flights

Delta Logo
06:20 - 22:20LHR-IDA
23h 00m2 stops
Delta Logo
06:05 - 07:05IDA-LHR
18h 00m2 stops
£655Delta
Find Deal
Sat, 22 Nov - Wed, 26 Nov
Delta Logo
06:20 - 18:14LHR-IDA
18h 54m2 stops
Delta Logo
06:05 - 07:50IDA-LHR
18h 45m2 stops
£656Delta
Find Deal
Sat, 22 Nov - Wed, 26 Nov
Delta Logo
10:45 - 18:14LHR-IDA
14h 29m1 stop
Delta Logo
13:05 - 10:00IDA-LHR
13h 55m1 stop
£665Delta
Find Deal
Sat, 22 Nov - Wed, 26 Nov
Delta Logo
10:45 - 22:20LHR-IDA
18h 35m1 stop
Delta Logo
06:05 - 10:00IDA-LHR
20h 55m1 stop
£666Delta
Find Deal
Sat, 22 Nov - Wed, 26 Nov
American Airlines Logo
12:00 - 21:23LHR-IDA
16h 23m1 stop
American Airlines Logo
13:11 - 10:30IDA-LHR
14h 19m1 stop
£672American Airlines
Find Deal
Thu, 2 Oct - Thu, 9 Oct
American Airlines Logo
14:25 - 22:34LHR-IDA
15h 09m1 stop
American Airlines Logo
13:58 - 12:15IDA-LHR
15h 17m1 stop
£674American Airlines
Find Deal
Sat, 22 Nov - Wed, 26 Nov
Logo
09:15 - 21:23LHR-IDA
19h 08m2 stops
Logo
16:15 - 13:40IDA-LHR
14h 25m1 stop
£676
Find Deal
Thu, 2 Oct - Thu, 9 Oct
Delta Logo
06:15 - 18:13LHR-IDA
18h 58m2 stops
Delta Logo
06:00 - 09:50IDA-LHR
20h 50m1 stop
£686Delta
Find Deal
Thu, 9 Oct - Sat, 18 Oct
British Airways Logo
08:55 - 21:23LHR-IDA
19h 28m2 stops
British Airways Logo
06:52 - 06:20IDA-LHR
16h 28m2 stops
£727British Airways
Find Deal
Thu, 2 Oct - Thu, 9 Oct
Logo
15:40 - 22:38LGW-IDA
37h 58m2 stops
Logo
06:00 - 14:35IDA-LGW
25h 35m2 stops
£841
Find Deal
Thu, 9 Oct - Sat, 18 Oct

Delta flights from London to Idaho Falls

Our best Delta deals on London to Idaho Falls flight tickets
Delta
22 Nov
LHR06:20London Heathrow
23h 00m
2 stops
IDA22:20Idaho Falls Fanning Field
26 Nov
IDA06:05Idaho Falls Fanning Field
18h 00m
2 stops
LHR07:05London Heathrow
£655
Find similar
Delta
22 Nov
LHR06:20London Heathrow
18h 54m
2 stops
IDA18:14Idaho Falls Fanning Field
26 Nov
IDA06:05Idaho Falls Fanning Field
18h 45m
2 stops
LHR07:50London Heathrow
£656
Find similar
Delta
22 Nov
LHR10:45London Heathrow
14h 29m
1 stop
IDA18:14Idaho Falls Fanning Field
26 Nov
IDA13:05Idaho Falls Fanning Field
13h 55m
1 stop
LHR10:00London Heathrow
£665
Find similar

American Airlines flights from London to Idaho Falls

Our best American Airlines deals on London to Idaho Falls flight tickets
American Airlines
2 Oct
LHR12:00London Heathrow
16h 23m
1 stop
IDA21:23Idaho Falls Fanning Field
9 Oct
IDA13:11Idaho Falls Fanning Field
14h 19m
1 stop
LHR10:30London Heathrow
£672
Find similar
American Airlines
22 Nov
LHR14:25London Heathrow
15h 09m
1 stop
IDA22:34Idaho Falls Fanning Field
26 Nov
IDA13:58Idaho Falls Fanning Field
15h 17m
1 stop
LHR12:15London Heathrow
£674
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 19 August 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

Sat 22/11

06:20-22:20

2 stops23h 00m

Idaho Falls Fanning Field

Wed 26/11

06:05-07:05

2 stops18h 00m

£655

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 22/11

06:20-18:14

2 stops18h 54m

Idaho Falls Fanning Field

Wed 26/11

06:05-07:50

2 stops18h 45m

£656

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 22/11

10:45-18:14

1 stop14h 29m

Idaho Falls Fanning Field

Wed 26/11

13:05-10:00

1 stop13h 55m

£665

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 22/11

10:45-22:20

1 stop18h 35m

Idaho Falls Fanning Field

Wed 26/11

06:05-10:00

1 stop20h 55m

£666

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Thu 2/10

12:00-21:23

1 stop16h 23m

Idaho Falls Fanning Field

Thu 9/10

13:11-10:30

1 stop14h 19m

£672

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 22/11

14:25-22:34

1 stop15h 09m

Idaho Falls Fanning Field

Wed 26/11

13:58-12:15

1 stop15h 17m

£674

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Thu 2/10

09:15-21:23

2 stops19h 08m

Idaho Falls Fanning Field

Thu 9/10

16:15-13:40

1 stop14h 25m

£676

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Thu 9/10

06:15-18:13

2 stops18h 58m

Idaho Falls Fanning Field

Sat 18/10

06:00-09:50

1 stop20h 50m

£686

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Thu 2/10

08:55-21:23

2 stops19h 28m

Idaho Falls Fanning Field

Thu 9/10

06:52-06:20

2 stops16h 28m

£727

LondonIdaho Falls

LGW - IDA

LGWIDA

London Gatwick

Thu 9/10

15:40-22:38

2 stops37h 58m

Idaho Falls Fanning Field

Sat 18/10

06:00-14:35

2 stops25h 35m

£841

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 month to fly to Idaho Falls?

The cheapest month to fly to Idaho Falls from London is in November. Flight prices, which tend to average around £630, are often lower during this time because this is during the off-season. The month of February is another great option to travel to Idaho Falls, with average flight prices from London averaging around £649.

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 £684. 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 £943.

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 £769. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are £882 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

Best price found

£655

Fastest flight time

14h 29m

Direct flights

None

Airports in Idaho Falls

1 airport
The best flight deal from London to Idaho Falls found on momondo in the last 72 hours is £655
The fastest flight from London to Idaho Falls takes 14h 29m
There are no direct flights from London to Idaho Falls. Popular non-direct routes for this connection are London Gatwick Airport - Idaho Falls Fanning Field Airport and London Heathrow Airport - Idaho Falls Fanning Field Airport.
There is 1 airport near Idaho Falls: Idaho Falls Fanning Field (IDA)
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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 14h 29m.

  • 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 £644Free CancellationRating
7.4
657 reviews
Search Virgin Atlantic flights
United AirlinesPriceFrom £752Free CancellationRating
7.4
8,922 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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