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Cheap flights from the United Kingdom to Idaho Falls from £527

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 11/9. 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

Discover deals from 900+ travel sites with momondo.

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.
Alaska Airlines Logo
17:00 - 15:20
LHR
-
IDA
29h 20m
1 stop
Alaska Airlines Logo
14:01 - 15:05
IDA
-
LHR
18h 04m
1 stop
£759Alaska Airlines
Tue, 1 Sep - Fri, 25 Sep
Alaska Airlines Logo
17:00 - 15:20
LHR
-
IDA
29h 20m
1 stop
Alaska Airlines Logo
06:18 - 15:05
IDA
-
LHR
25h 47m
1 stop
£802Alaska Airlines
Tue, 1 Sep - Fri, 25 Sep
Alaska Airlines Logo
17:00 - 15:20
LHR
-
IDA
29h 20m
1 stop
Alaska Airlines Logo
06:18 - 15:05
IDA
-
LHR
25h 47m
1 stop
£802Alaska Airlines
Fri, 11 Sep - Fri, 18 Sep
Alaska Airlines Logo
17:00 - 15:20
LHR
-
IDA
29h 20m
1 stop
Alaska Airlines Logo
14:01 - 15:05
IDA
-
LHR
18h 04m
1 stop
£806Alaska Airlines
Tue, 1 Sep - Fri, 25 Sep
Alaska Airlines Logo
17:00 - 15:20
LHR
-
IDA
29h 20m
1 stop
Alaska Airlines Logo
06:18 - 15:05
IDA
-
LHR
25h 47m
1 stop
£811Alaska Airlines
Tue, 1 Sep - Fri, 25 Sep
Alaska Airlines Logo
17:00 - 15:20
LHR
-
IDA
29h 20m
1 stop
Alaska Airlines Logo
14:01 - 15:05
IDA
-
LHR
18h 04m
1 stop
£811Alaska Airlines
Tue, 1 Sep - Fri, 25 Sep
Finnair Logo
10:30 - 21:20
LHR
-
IDA
17h 50m
2 stops
Finnair Logo
12:15 - 12:15
IDA
-
LHR
17h 00m
2 stops
£820Finnair
Tue, 1 Sep - Fri, 25 Sep
Finnair Logo
09:45 - 21:20
LHR
-
IDA
18h 35m
2 stops
Finnair Logo
07:00 - 06:20
IDA
-
LHR
16h 20m
1 stop
£820Finnair
Tue, 1 Sep - Fri, 25 Sep
United Airlines Logo
07:30 - 17:16
LHR
-
IDA
16h 46m
2 stops
United Airlines Logo
10:35 - 10:40
IDA
-
LHR
17h 05m
2 stops
£944United Airlines
Thu, 10 Sep - Thu, 17 Sep
United Airlines Logo
07:30 - 17:16
LHR
-
IDA
16h 46m
2 stops
United Airlines Logo
14:25 - 12:25
IDA
-
LHR
15h 00m
1 stop
£944United Airlines
Thu, 10 Sep - Thu, 17 Sep

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United Airlines flights from United Kingdom to Idaho Falls

Our best United Airlines deals on United Kingdom to Idaho Falls flight tickets
United Airlines
10 Sept
LHR07:30London Heathrow
16h 46m
2 stops
IDA17:16Idaho Falls Fanning Field
17 Sept
IDA14:25Idaho Falls Fanning Field
15h 00m
1 stop
LHR12:25London Heathrow
£944
United Airlines
10 Sept
LHR14:50London Heathrow
13h 28m
1 stop
IDA21:18Idaho Falls Fanning Field
17 Sept
IDA14:25Idaho Falls Fanning Field
15h 00m
1 stop
LHR12:25London Heathrow
£967
United Airlines
12 Sept
LHR08:00London Heathrow
16h 16m
2 stops
IDA17:16Idaho Falls Fanning Field
19 Sept
IDA12:20Idaho Falls Fanning Field
15h 20m
2 stops
LHR10:40London Heathrow
£1,005

Alaska Airlines flights from United Kingdom to Idaho Falls

Our best Alaska Airlines deals on United Kingdom to Idaho Falls flight tickets
Alaska Airlines
1 Sept
LHR17:00London Heathrow
29h 20m
1 stop
IDA15:20Idaho Falls Fanning Field
25 Sept
IDA14:01Idaho Falls Fanning Field
18h 04m
1 stop
LHR15:05London Heathrow
£759
Alaska Airlines
1 Sept
LHR17:00London Heathrow
29h 20m
1 stop
IDA15:20Idaho Falls Fanning Field
25 Sept
IDA06:18Idaho Falls Fanning Field
25h 47m
1 stop
LHR15:05London Heathrow
£802
Alaska Airlines
11 Sept
LHR17:00London Heathrow
29h 20m
1 stop
IDA15:20Idaho Falls Fanning Field
18 Sept
IDA06:18Idaho Falls Fanning Field
25h 47m
1 stop
LHR15:05London Heathrow
£802

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 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

17:00-15:20

1 stop29h 20m

Idaho Falls Fanning Field

Fri 25/9

14:01-15:05

1 stop18h 04m

£759

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 1/9

17:00-15:20

1 stop29h 20m

Idaho Falls Fanning Field

Fri 25/9

06:18-15:05

1 stop25h 47m

£802

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Fri 11/9

17:00-15:20

1 stop29h 20m

Idaho Falls Fanning Field

Fri 18/9

06:18-15:05

1 stop25h 47m

£802

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 1/9

17:00-15:20

1 stop29h 20m

Idaho Falls Fanning Field

Fri 25/9

14:01-15:05

1 stop18h 04m

£806

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 1/9

17:00-15:20

1 stop29h 20m

Idaho Falls Fanning Field

Fri 25/9

06:18-15:05

1 stop25h 47m

£811

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 1/9

17:00-15:20

1 stop29h 20m

Idaho Falls Fanning Field

Fri 25/9

14:01-15:05

1 stop18h 04m

£811

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 1/9

10:30-21:20

2 stops17h 50m

Idaho Falls Fanning Field

Fri 25/9

12:15-12:15

2 stops17h 00m

£820

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Tue 1/9

09:45-21:20

2 stops18h 35m

Idaho Falls Fanning Field

Fri 25/9

07:00-06:20

1 stop16h 20m

£820

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Thu 10/9

07:30-17:16

2 stops16h 46m

Idaho Falls Fanning Field

Thu 17/9

10:35-10:40

2 stops17h 05m

£944
Fastest return journey

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Thu 10/9

07:30-17:16

2 stops16h 46m

Idaho Falls Fanning Field

Thu 17/9

14:25-12:25

1 stop15h 00m

£944

Flights are sorted by cheapest return flights first.

Showing 1-10 of 18 resultsSorted by cheapest first
1
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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 12% 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 39m

Direct flights

None
The fastest flight from United Kingdom to Idaho Falls takes 16h 39m
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 £1,035Free CancellationRating
7.4
10,062 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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