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Cheap flights from the United Kingdom to Idaho Falls from £434

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United Kingdom to Idaho Falls departing on 7/10. 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 the United Kingdom to Idaho Falls

Recent return flight deals from the United Kingdom to Idaho Falls

Logo
16:30 - 13:27LHR-IDA
27h 57m1 stop
Logo
13:58 - 12:15IDA-LHR
15h 17m1 stop
£653
Find Deal
Sat, 22 Nov - Wed, 26 Nov
American Airlines Logo
14:25 - 22:34LHR-IDA
15h 09m1 stop
American Airlines Logo
07:15 - 20:00IDA-LHR
29h 45m2 stops
£656American Airlines
Find Deal
Sat, 22 Nov - Wed, 26 Nov
Delta Logo
06:20 - 18:14LHR-IDA
18h 54m2 stops
Delta Logo
18:50 - 12:15IDA-LHR
34h 25m2 stops
£657Delta
Find Deal
Sat, 22 Nov - Wed, 26 Nov
Delta Logo
10:45 - 18:14LHR-IDA
14h 29m1 stop
Delta Logo
06:05 - 10:35IDA-LHR
21h 30m2 stops
£666Delta
Find Deal
Sat, 22 Nov - Wed, 26 Nov
American Airlines Logo
14:25 - 22:34LHR-IDA
15h 09m1 stop
American Airlines Logo
13:58 - 12:15IDA-LHR
15h 17m1 stop
£679American Airlines
Find Deal
Sat, 22 Nov - Wed, 26 Nov
Logo
14:55 - 00:02LHR-IDA
16h 07m1 stop
Logo
07:15 - 09:35IDA-LHR
19h 20m2 stops
£680
Find Deal
Sat, 22 Nov - Wed, 26 Nov
United Airlines Logo
08:30 - 22:52LHR-IDA
21h 22m2 stops
United Airlines Logo
10:50 - 10:50IDA-LHR
17h 00m2 stops
£725United Airlines
Find Deal
Sat, 22 Nov - Wed, 26 Nov
British Airways Logo
09:45 - 21:25LHR-IDA
18h 40m2 stops
British Airways Logo
13:35 - 12:15IDA-LHR
15h 40m2 stops
£728British Airways
Find Deal
Sat, 13 Sep - Sat, 20 Sep
British Airways Logo
09:15 - 21:25LHR-IDA
19h 10m2 stops
British Airways Logo
13:35 - 06:25IDA-LHR
33h 50m1 stop
£729British Airways
Find Deal
Sat, 13 Sep - Sat, 20 Sep
United Airlines Logo
14:50 - 20:54LHR-IDA
13h 04m1 stop
United Airlines Logo
10:56 - 11:45IDA-LHR
17h 49m2 stops
£749United Airlines
Find Deal
Sat, 13 Sep - Sat, 20 Sep

Delta flights from United Kingdom to Idaho Falls

Our best Delta deals on United Kingdom to Idaho Falls flight tickets
Delta
22 Nov
LHR06:20London Heathrow
18h 54m
2 stops
IDA18:14Idaho Falls Fanning Field
26 Nov
IDA18:50Idaho Falls Fanning Field
34h 25m
2 stops
LHR12:15London Heathrow
£657
Find similar
Delta
22 Nov
LHR10:45London Heathrow
14h 29m
1 stop
IDA18:14Idaho Falls Fanning Field
26 Nov
IDA06:05Idaho Falls Fanning Field
21h 30m
2 stops
LHR10:35London Heathrow
£666
Find similar
Delta
5 Nov
MAN13:30Manchester
39h 45m
2 stops
IDA22:15Idaho Falls Fanning Field
9 Nov
IDA13:05Idaho Falls Fanning Field
44h 00m
2 stops
MAN16:05Manchester
£710
Find similar

American Airlines flights from United Kingdom to Idaho Falls

Our best American Airlines deals on United Kingdom to Idaho Falls flight tickets
American Airlines
22 Nov
LHR14:25London Heathrow
15h 09m
1 stop
IDA22:34Idaho Falls Fanning Field
26 Nov
IDA07:15Idaho Falls Fanning Field
29h 45m
2 stops
LHR20:00London Heathrow
£656
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
£679
Find similar
American Airlines
22 Nov
LHR15:45London Heathrow
28h 42m
2 stops
IDA13:27Idaho Falls Fanning Field
26 Nov
IDA07:15Idaho Falls Fanning Field
21h 00m
2 stops
LHR11:15London Heathrow
£683
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from United Kingdom 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 1 August 2025.
Use the filters below to find and compare flights from the United Kingdom 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

16:30-13:27

1 stop27h 57m

Idaho Falls Fanning Field

Wed 26/11

13:58-12:15

1 stop15h 17m

£653

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 22/11

14:25-22:34

1 stop15h 09m

Idaho Falls Fanning Field

Wed 26/11

07:15-20:00

2 stops29h 45m

£656

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 22/11

06:20-18:14

2 stops18h 54m

Idaho Falls Fanning Field

Wed 26/11

18:50-12:15

2 stops34h 25m

£657

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 22/11

10:45-18:14

1 stop14h 29m

Idaho Falls Fanning Field

Wed 26/11

06:05-10:35

2 stops21h 30m

£666

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

£679

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 22/11

14:55-00:02

1 stop16h 07m

Idaho Falls Fanning Field

Wed 26/11

07:15-09:35

2 stops19h 20m

£680

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 22/11

08:30-22:52

2 stops21h 22m

Idaho Falls Fanning Field

Wed 26/11

10:50-10:50

2 stops17h 00m

£725

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 13/9

09:45-21:25

2 stops18h 40m

Idaho Falls Fanning Field

Sat 20/9

13:35-12:15

2 stops15h 40m

£728

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 13/9

09:15-21:25

2 stops19h 10m

Idaho Falls Fanning Field

Sat 20/9

13:35-06:25

1 stop33h 50m

£729

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 13/9

14:50-20:54

1 stop13h 04m

Idaho Falls Fanning Field

Sat 20/9

10:56-11:45

2 stops17h 49m

£749

Flights are sorted by cheapest return flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
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See travel insights to Idaho Falls from

How to get the cheapest flight ticket from United Kingdom 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 United Kingdom is in November. Flight prices, which tend to average around £645, 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 United Kingdom averaging around £664.

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 United Kingdom. The lowest ticket price found for a Tuesday departure recently was £699. 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 United Kingdom because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £965.

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 £786. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are £902 on average. Flights to Idaho Falls from United Kingdom in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

Cheap United Kingdom to Idaho Falls flight deals and tips

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

Best price found

£434

Fastest flight time

13h 04m

Direct flights

None

Airports in Idaho Falls

1 airport
The best one-way flight to Idaho Falls from United Kingdom in the past 72 hours is £434. The best return flight deal from United Kingdom to Idaho Falls found on momondo in the last 72 hours is £653.
The fastest flight from United Kingdom to Idaho Falls takes 13h 04m
There are no direct flights from United Kingdom to Idaho Falls. Popular non-direct routes for this connection are Manchester Airport - Idaho Falls Fanning Field Airport, Edinburgh Turnhouse 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)
Search flight deals

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

    Prices for flights from United Kingdom to Idaho Falls Fanning Field Airport are updated daily.

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

  • How old do you have to be to fly from United Kingdom 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 United Kingdom to Idaho Falls Fanning Field Airport.

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

    The necessary travel and health documents for your Idaho Falls Fanning Field Airport 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.

Best airlines flying from United Kingdom to Idaho Falls

Compare and see reviews for airlines that fly from United Kingdom to Idaho Falls with momondo
Airline
Rating
Free Cancellation
Price
Virgin AtlanticPriceFrom £658Free CancellationRating
7.4
655 reviews
Search Virgin Atlantic flights
United AirlinesPriceFrom £769Free CancellationRating
7.4
8,900 reviews
Search United Airlines flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from United Kingdom to Idaho Falls. momondo saves you time and could save you money on your trip.

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

All flight searches from United Kingdom to Idaho Falls on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from United Kingdom to Idaho Falls?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from United Kingdom to Idaho Falls.

I’m not ready to book a flight from United Kingdom to Idaho Falls right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Idaho Falls from United Kingdom. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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