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Cheap flights from London to Idaho Falls from $893

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London to Idaho Falls departing on 1/3. 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

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
12:30 pm - 1:27 pmLGW-IDA
31h 57m2 stops
American Airlines Logo
1:58 pm - 7:30 amIDA-LGW
34h 32m2 stops
$1,008American Airlines
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Mon, Dec 1 - Mon, Dec 8
Virgin Atlantic Logo
8:25 pm - 10:21 pmLHR-IDA
32h 56m2 stops
Virgin Atlantic Logo
6:00 am - 10:00 amIDA-LHR
21h 00m1 stop
$1,122Virgin Atlantic
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Mon, Dec 1 - Mon, Dec 8
Virgin Atlantic Logo
8:25 pm - 10:21 pmLHR-IDA
32h 56m2 stops
Virgin Atlantic Logo
6:00 am - 6:50 amIDA-LHR
17h 50m2 stops
$1,126Virgin Atlantic
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Mon, Dec 1 - Mon, Dec 8
United Airlines Logo
7:40 am - 9:14 pmLHR-IDA
20h 34m2 stops
United Airlines Logo
10:51 am - 9:40 amIDA-LHR
15h 49m1 stop
$1,153United Airlines
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Thu, Jan 8 - Thu, Jan 22
United Airlines Logo
6:00 pm - 9:12 pmLHR-IDA
34h 12m2 stops
United Airlines Logo
2:45 pm - 9:40 amIDA-LHR
11h 55m1 stop
$1,223United Airlines
Find Deal
Mon, Dec 1 - Mon, Dec 8
Delta Logo
6:20 am - 6:17 pmLHR-IDA
18h 57m2 stops
Delta Logo
6:57 pm - 10:00 amIDA-LHR
32h 03m1 stop
$1,313Delta
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Sat, Nov 22 - Tue, Nov 25
Delta Logo
6:20 am - 6:17 pmLHR-IDA
18h 57m2 stops
Delta Logo
6:00 am - 10:15 amIDA-LHR
21h 15m2 stops
$1,314Delta
Find Deal
Sat, Nov 22 - Tue, Nov 25
Delta Logo
10:45 am - 6:17 pmLHR-IDA
14h 32m1 stop
Delta Logo
1:15 pm - 10:00 amIDA-LHR
13h 45m1 stop
$1,325Delta
Find Deal
Sat, Nov 22 - Tue, Nov 25
Multiple Airlines Logo
4:30 pm - 1:27 pmLHR-IDA
27h 57m1 stop
Multiple Airlines Logo
7:00 am - 1:15 pmIDA-LHR
23h 15m1 stop
$1,486Multiple Airlines
Find Deal
Mon, Dec 1 - Mon, Dec 8
Multiple Airlines Logo
2:55 pm - 11:59 pmLHR-IDA
16h 04m1 stop
Multiple Airlines Logo
7:00 am - 1:15 pmIDA-LHR
23h 15m1 stop
$2,707Multiple Airlines
Find Deal
Mon, Dec 1 - Mon, Dec 8

American Airlines flights from London to Idaho Falls

Our best American Airlines deals on London to Idaho Falls flight tickets
American Airlines
Dec 1
LGW12:30 pmLondon Gatwick
31h 57m
2 stops
IDA1:27 pmIdaho Falls Fanning Field
Dec 8
IDA1:58 pmIdaho Falls Fanning Field
34h 32m
2 stops
LGW7:30 amLondon Gatwick
$1,008
Find similar
American Airlines
Dec 1
LGW11:20 amLondon Gatwick
33h 07m
2 stops
IDA1:27 pmIdaho Falls Fanning Field
Dec 8
IDA7:00 amIdaho Falls Fanning Field
19h 00m
3 stops
LGW9:00 amLondon Gatwick
$5,054
Find similar

Virgin Atlantic flights from London to Idaho Falls

Our best Virgin Atlantic deals on London to Idaho Falls flight tickets
Virgin Atlantic
Dec 1
LHR8:25 pmLondon Heathrow
32h 56m
2 stops
IDA10:21 pmIdaho Falls Fanning Field
Dec 8
IDA6:00 amIdaho Falls Fanning Field
21h 00m
1 stop
LHR10:00 amLondon Heathrow
$1,122
Find similar
Virgin Atlantic
Dec 1
LHR8:25 pmLondon Heathrow
32h 56m
2 stops
IDA10:21 pmIdaho Falls Fanning Field
Dec 8
IDA6:00 amIdaho Falls Fanning Field
17h 50m
2 stops
LHR6:50 amLondon Heathrow
$1,126
Find similar

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated November 12, 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

LGW - IDA

LGWIDA

London Gatwick

Mon 12/1

12:30 pm-1:27 pm

2 stops31h 57m

Idaho Falls Fanning Field

Mon 12/8

1:58 pm-7:30 am

2 stops34h 32m

$1,008

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Mon 12/1

8:25 pm-10:21 pm

2 stops32h 56m

Idaho Falls Fanning Field

Mon 12/8

6:00 am-10:00 am

1 stop21h 00m

$1,122

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Mon 12/1

8:25 pm-10:21 pm

2 stops32h 56m

Idaho Falls Fanning Field

Mon 12/8

6:00 am-6:50 am

2 stops17h 50m

$1,126

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Thu 1/8

7:40 am-9:14 pm

2 stops20h 34m

Idaho Falls Fanning Field

Thu 1/22

10:51 am-9:40 am

1 stop15h 49m

$1,153

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Mon 12/1

6:00 pm-9:12 pm

2 stops34h 12m

Idaho Falls Fanning Field

Mon 12/8

2:45 pm-9:40 am

1 stop11h 55m

$1,223

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 11/22

6:20 am-6:17 pm

2 stops18h 57m

Idaho Falls Fanning Field

Tue 11/25

6:57 pm-10:00 am

1 stop32h 03m

$1,313

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 11/22

6:20 am-6:17 pm

2 stops18h 57m

Idaho Falls Fanning Field

Tue 11/25

6:00 am-10:15 am

2 stops21h 15m

$1,314

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 11/22

10:45 am-6:17 pm

1 stop14h 32m

Idaho Falls Fanning Field

Tue 11/25

1:15 pm-10:00 am

1 stop13h 45m

$1,325

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Mon 12/1

4:30 pm-1:27 pm

1 stop27h 57m

Idaho Falls Fanning Field

Mon 12/8

7:00 am-1:15 pm

1 stop23h 15m

$1,486

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Mon 12/1

2:55 pm-11:59 pm

1 stop16h 04m

Idaho Falls Fanning Field

Mon 12/8

7:00 am-1:15 pm

1 stop23h 15m

$2,707

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
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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

Can stopping save me money on London to Idaho Falls flights?

You could potentially save up to 37% on your flight if you consider stops on a London to Idaho Falls flight.

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 round-trip 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

Direct flights

None
There are no direct flights from London to Idaho Falls. There are no popular flight routes from London to Idaho Falls.
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  • How far is London to Idaho Falls Fanning Field by plane?

    There are 4715.6 mi between London and Idaho Falls Fanning Field. Typically, this will take 14h 32m by plane in normal conditions.

  • 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 old do you have to be to fly from London to Idaho Falls Fanning Field Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, 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 you'll need for your trip to Idaho Falls Fanning Field Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Idaho Falls Fanning Field Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Traveling to a place near Idaho Falls?

Book flights to Idaho Falls if you plan to visit one of these locations
Rexburg

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Idaho Falls for you.

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

Yes. momondo allows you to filter the results for London to Idaho Falls flights to just show those with flexible booking policies.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Idaho Falls from London.

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

Price alerts on flights to Idaho Falls from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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