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Cheap flights from the United Kingdom to Idaho Falls from £393

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 26/5. 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 the United Kingdom to Idaho Falls

Recent return flight deals from the United Kingdom to Idaho Falls

Enter your travel dates to find the best prices.
Icelandair Logo
13:05 - 22:56
LHR
-
IDA
16h 51m
2 stops
Icelandair Logo
06:18 - 11:55
IDA
-
LHR
22h 37m
2 stops
£798Icelandair
Tue, 1 Sep - Fri, 25 Sep
Icelandair Logo
13:05 - 22:56
LHR
-
IDA
40h 51m
2 stops
Icelandair Logo
13:45 - 20:20
IDA
-
LHR
23h 35m
2 stops
£803Icelandair
Tue, 1 Sep - Fri, 25 Sep
Multiple Airlines Logo
13:00 - 22:56
LGW
-
IDA
16h 56m
2 stops
Multiple Airlines Logo
06:18 - 14:40
IDA
-
LGW
25h 22m
2 stops
£810Multiple Airlines
Tue, 1 Sep - Fri, 25 Sep
Multiple Airlines Logo
13:00 - 22:56
LGW
-
IDA
16h 56m
2 stops
Multiple Airlines Logo
06:18 - 14:40
IDA
-
LGW
25h 22m
2 stops
£816Multiple Airlines
Tue, 1 Sep - Fri, 25 Sep
Alaska Airlines Logo
17:00 - 15:37
LHR
-
IDA
29h 37m
1 stop
Alaska Airlines Logo
13:43 - 15:05
IDA
-
LHR
18h 22m
1 stop
£834Alaska Airlines
Tue, 9 Jun - Tue, 16 Jun
Delta Logo
06:15 - 18:14
LHR
-
IDA
18h 59m
2 stops
Delta Logo
06:10 - 10:00
IDA
-
LHR
20h 50m
1 stop
£837Delta
Tue, 1 Sep - Fri, 25 Sep
Alaska Airlines Logo
17:00 - 15:37
LHR
-
IDA
29h 37m
1 stop
Alaska Airlines Logo
07:15 - 15:05
IDA
-
LHR
24h 50m
1 stop
£838Alaska Airlines
Tue, 9 Jun - Tue, 16 Jun
Delta Logo
06:15 - 18:14
LHR
-
IDA
18h 59m
2 stops
Delta Logo
06:10 - 10:00
IDA
-
LHR
20h 50m
1 stop
£842Delta
Tue, 1 Sep - Fri, 25 Sep
United Airlines Logo
09:00 - 09:53
MAN
-
IDA
55h 53m
2 stops
United Airlines Logo
16:04 - 17:10
IDA
-
MAN
42h 06m
2 stops
£1,107United Airlines
Wed, 14 Oct - Sun, 18 Oct
United Airlines Logo
09:00 - 17:16
MAN
-
IDA
39h 16m
2 stops
United Airlines Logo
16:04 - 17:10
IDA
-
MAN
42h 06m
2 stops
£1,108United Airlines
Wed, 14 Oct - Sun, 18 Oct

Alaska Airlines flights from United Kingdom to Idaho Falls

Our best Alaska Airlines deals on United Kingdom to Idaho Falls flight tickets
Alaska Airlines
9 Jun
LHR17:00London Heathrow
29h 37m
1 stop
IDA15:37Idaho Falls Fanning Field
16 Jun
IDA13:43Idaho Falls Fanning Field
18h 22m
1 stop
LHR15:05London Heathrow
£834
Alaska Airlines
9 Jun
LHR17:00London Heathrow
29h 37m
1 stop
IDA15:37Idaho Falls Fanning Field
16 Jun
IDA07:15Idaho Falls Fanning Field
24h 50m
1 stop
LHR15:05London Heathrow
£838
Alaska Airlines
9 Jun
LHR17:00London Heathrow
29h 37m
1 stop
IDA15:37Idaho Falls Fanning Field
16 Jun
IDA07:15Idaho Falls Fanning Field
24h 50m
1 stop
LHR15:05London Heathrow
£891

British Airways flights from United Kingdom to Idaho Falls

Our best British Airways deals on United Kingdom to Idaho Falls flight tickets
British Airways
23 Jul
LHR14:45London Heathrow
29h 39m
1 stop
IDA13:24Idaho Falls Fanning Field
31 Jul
IDA07:00Idaho Falls Fanning Field
17h 20m
2 stops
LHR07:20London Heathrow
£1,062
British Airways
23 Jul
LHR14:45London Heathrow
29h 39m
1 stop
IDA13:24Idaho Falls Fanning Field
31 Jul
IDA13:54Idaho Falls Fanning Field
15h 16m
1 stop
LHR12:10London Heathrow
£1,066
British Airways
23 Jul
LHR14:45London Heathrow
28h 14m
2 stops
IDA11:59Idaho Falls Fanning Field
31 Jul
IDA07:00Idaho Falls Fanning Field
17h 20m
2 stops
LHR07:20London Heathrow
£1,079

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 19 April 2026.
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

Cheapest return flight
Fastest return journey

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 1/9

13:05-22:56

2 stops16h 51m

Idaho Falls Fanning Field

Fri 25/9

06:18-11:55

2 stops22h 37m

£798

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 1/9

13:05-22:56

2 stops40h 51m

Idaho Falls Fanning Field

Fri 25/9

13:45-20:20

2 stops23h 35m

£803

LondonIdaho Falls

LGW - IDA

LGWIDA

London Gatwick

Tue 1/9

13:00-22:56

2 stops16h 56m

Idaho Falls Fanning Field

Fri 25/9

06:18-14:40

2 stops25h 22m

£810

LondonIdaho Falls

LGW - IDA

LGWIDA

London Gatwick

Tue 1/9

13:00-22:56

2 stops16h 56m

Idaho Falls Fanning Field

Fri 25/9

06:18-14:40

2 stops25h 22m

£816

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 9/6

17:00-15:37

1 stop29h 37m

Idaho Falls Fanning Field

Tue 16/6

13:43-15:05

1 stop18h 22m

£834

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 1/9

06:15-18:14

2 stops18h 59m

Idaho Falls Fanning Field

Fri 25/9

06:10-10:00

1 stop20h 50m

£837

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 9/6

17:00-15:37

1 stop29h 37m

Idaho Falls Fanning Field

Tue 16/6

07:15-15:05

1 stop24h 50m

£838

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 1/9

06:15-18:14

2 stops18h 59m

Idaho Falls Fanning Field

Fri 25/9

06:10-10:00

1 stop20h 50m

£842

ManchesterIdaho Falls

MAN - IDA

MANIDA

Manchester

Wed 14/10

09:00-09:53

2 stops55h 53m

Idaho Falls Fanning Field

Sun 18/10

16:04-17:10

2 stops42h 06m

£1,107

ManchesterIdaho Falls

MAN - IDA

MANIDA

Manchester

Wed 14/10

09:00-17:16

2 stops39h 16m

Idaho Falls Fanning Field

Sun 18/10

16:04-17:10

2 stops42h 06m

£1,108

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 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

Can stopping save me money on United Kingdom to Idaho Falls flights?

You could potentially save up to 28% on your flight if you consider stops on a United Kingdom to Idaho Falls flight.

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

Fastest flight time

16h 56m

Direct flights

None
The fastest flight from United Kingdom to Idaho Falls takes 16h 56m
There are no direct flights from United Kingdom to Idaho Falls. There are no popular flight routes from United Kingdom to Idaho Falls.
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Frequently asked questions about flying from the United Kingdom to Idaho Falls

  • 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
United AirlinesPriceFrom £873Free CancellationRating
7.4
9,604 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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