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Cheap flights from the United Kingdom to Idaho Falls from £361

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 24/6. 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
1 adult, Economy, 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.
American Airlines Logo
10:05 - 21:20
LHR
-
IDA
18h 15m
1 stop
American Airlines Logo
12:15 - 10:55
IDA
-
LHR
15h 40m
1 stop
£832American Airlines
Tue, 1 Sep - Fri, 25 Sep
American Airlines Logo
12:55 - 21:20
LHR
-
IDA
15h 25m
1 stop
American Airlines Logo
14:08 - 14:25
IDA
-
LHR
17h 17m
1 stop
£833American Airlines
Tue, 1 Sep - Fri, 25 Sep
American Airlines Logo
08:55 - 21:20
LHR
-
IDA
19h 25m
1 stop
American Airlines Logo
12:15 - 10:55
IDA
-
LHR
15h 40m
1 stop
£834American Airlines
Tue, 1 Sep - Fri, 25 Sep
Multiple Airlines Logo
12:55 - 21:20
LHR
-
IDA
15h 25m
1 stop
Multiple Airlines Logo
07:00 - 10:55
IDA
-
LHR
20h 55m
1 stop
£840Multiple Airlines
Tue, 1 Sep - Fri, 25 Sep
Multiple Airlines Logo
12:55 - 21:20
LHR
-
IDA
15h 25m
1 stop
Multiple Airlines Logo
07:00 - 10:55
IDA
-
LHR
20h 55m
1 stop
£841Multiple Airlines
Tue, 1 Sep - Fri, 25 Sep
Delta Logo
06:15 - 18:20
LHR
-
IDA
19h 05m
2 stops
Delta Logo
18:57 - 20:10
IDA
-
LHR
18h 13m
2 stops
£845Delta
Tue, 1 Sep - Fri, 25 Sep
Delta Logo
06:15 - 18:20
LHR
-
IDA
19h 05m
2 stops
Delta Logo
06:00 - 10:00
IDA
-
LHR
21h 00m
1 stop
£849Delta
Tue, 1 Sep - Fri, 25 Sep
Icelandair Logo
13:00 - 22:56
LGW
-
IDA
16h 56m
2 stops
Icelandair Logo
14:01 - 14:40
IDA
-
LGW
17h 39m
2 stops
£960Icelandair
Tue, 1 Sep - Fri, 25 Sep
United Airlines Logo
14:00 - 09:53
GLA
-
IDA
26h 53m
2 stops
United Airlines Logo
16:05 - 10:10
IDA
-
GLA
35h 05m
2 stops
£992United Airlines
Thu, 24 Sep - Mon, 28 Sep
United Airlines Logo
14:00 - 20:54
GLA
-
IDA
37h 54m
2 stops
United Airlines Logo
16:05 - 10:10
IDA
-
GLA
35h 05m
2 stops
£997United Airlines
Thu, 24 Sep - Mon, 28 Sep

American Airlines flights from United Kingdom to Idaho Falls

Our best American Airlines deals on United Kingdom to Idaho Falls flight tickets
American Airlines
1 Sept
LHR10:05London Heathrow
18h 15m
1 stop
IDA21:20Idaho Falls Fanning Field
25 Sept
IDA12:15Idaho Falls Fanning Field
15h 40m
1 stop
LHR10:55London Heathrow
£832
American Airlines
1 Sept
LHR12:55London Heathrow
15h 25m
1 stop
IDA21:20Idaho Falls Fanning Field
25 Sept
IDA14:08Idaho Falls Fanning Field
17h 17m
1 stop
LHR14:25London Heathrow
£833
American Airlines
1 Sept
LHR08:55London Heathrow
19h 25m
1 stop
IDA21:20Idaho Falls Fanning Field
25 Sept
IDA12:15Idaho Falls Fanning Field
15h 40m
1 stop
LHR10:55London Heathrow
£834

Delta flights from United Kingdom to Idaho Falls

Our best Delta deals on United Kingdom to Idaho Falls flight tickets
Delta
1 Sept
LHR06:15London Heathrow
19h 05m
2 stops
IDA18:20Idaho Falls Fanning Field
25 Sept
IDA18:57Idaho Falls Fanning Field
18h 13m
2 stops
LHR20:10London Heathrow
£845
Delta
1 Sept
LHR06:15London Heathrow
19h 05m
2 stops
IDA18:20Idaho Falls Fanning Field
25 Sept
IDA06:00Idaho Falls Fanning Field
21h 00m
1 stop
LHR10:00London Heathrow
£849
Delta
1 Sept
LHR06:15London Heathrow
19h 05m
2 stops
IDA18:20Idaho Falls Fanning Field
25 Sept
IDA06:00Idaho Falls Fanning Field
21h 00m
1 stop
LHR10:00London Heathrow
£850

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 7 June 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

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 1/9

10:05-21:20

1 stop18h 15m

Idaho Falls Fanning Field

Fri 25/9

12:15-10:55

1 stop15h 40m

£832
Fastest return journey

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 1/9

12:55-21:20

1 stop15h 25m

Idaho Falls Fanning Field

Fri 25/9

14:08-14:25

1 stop17h 17m

£833

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 1/9

08:55-21:20

1 stop19h 25m

Idaho Falls Fanning Field

Fri 25/9

12:15-10:55

1 stop15h 40m

£834

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 1/9

12:55-21:20

1 stop15h 25m

Idaho Falls Fanning Field

Fri 25/9

07:00-10:55

1 stop20h 55m

£840

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 1/9

12:55-21:20

1 stop15h 25m

Idaho Falls Fanning Field

Fri 25/9

07:00-10:55

1 stop20h 55m

£841

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 1/9

06:15-18:20

2 stops19h 05m

Idaho Falls Fanning Field

Fri 25/9

18:57-20:10

2 stops18h 13m

£845

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 1/9

06:15-18:20

2 stops19h 05m

Idaho Falls Fanning Field

Fri 25/9

06:00-10:00

1 stop21h 00m

£849

LondonIdaho Falls

LGW - IDA

LGWIDA

London Gatwick

Tue 1/9

13:00-22:56

2 stops16h 56m

Idaho Falls Fanning Field

Fri 25/9

14:01-14:40

2 stops17h 39m

£960

GlasgowIdaho Falls

GLA - IDA

GLAIDA

Glasgow Intl

Thu 24/9

14:00-09:53

2 stops26h 53m

Idaho Falls Fanning Field

Mon 28/9

16:05-10:10

2 stops35h 05m

£992

GlasgowIdaho Falls

GLA - IDA

GLAIDA

Glasgow Intl

Thu 24/9

14:00-20:54

2 stops37h 54m

Idaho Falls Fanning Field

Mon 28/9

16:05-10:10

2 stops35h 05m

£997

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

17h 34m

Direct flights

None
The fastest flight from United Kingdom to Idaho Falls takes 17h 34m
There are no direct flights from United Kingdom to Idaho Falls. There are no popular flight routes from United Kingdom to Idaho Falls.
Search flight deals

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 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.

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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