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Cheap flights from London Heathrow Airport to Idaho Falls from $620

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 Heathrow Airport to Idaho Falls departing on 10/16. 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 London Heathrow Airport to Idaho Falls

Cheap round-trip flights

American Airlines Logo
2:25 pm - 10:34 pmLHR-IDA
15h 09m1 stop
American Airlines Logo
7:10 am - 8:00 pmIDA-LHR
29h 50m2 stops
$809American Airlines
Find Deal
Sat, Nov 22 - Wed, Nov 26
Delta Logo
6:20 am - 6:17 pmLHR-IDA
18h 57m2 stops
Delta Logo
6:00 am - 10:00 amIDA-LHR
21h 00m1 stop
$817Delta
Find Deal
Sat, Nov 22 - Wed, Nov 26
American Airlines Logo
10:05 am - 10:34 pmLHR-IDA
19h 29m2 stops
American Airlines Logo
7:10 am - 8:00 pmIDA-LHR
29h 50m2 stops
$818American Airlines
Find Deal
Sat, Nov 22 - Wed, Nov 26
American Airlines Logo
10:05 am - 10:34 pmLHR-IDA
19h 29m2 stops
American Airlines Logo
7:10 am - 8:00 pmIDA-LHR
29h 50m2 stops
$819American Airlines
Find Deal
Sat, Nov 22 - Wed, Nov 26
Delta Logo
10:45 am - 10:33 pmLHR-IDA
18h 48m1 stop
Delta Logo
6:00 am - 10:00 amIDA-LHR
21h 00m1 stop
$829Delta
Find Deal
Sat, Nov 22 - Wed, Nov 26
Delta Logo
10:45 am - 6:17 pmLHR-IDA
14h 32m1 stop
Delta Logo
6:00 am - 10:00 amIDA-LHR
21h 00m1 stop
$830Delta
Find Deal
Sat, Nov 22 - Wed, Nov 26
United Airlines Logo
11:10 am - 10:52 pmLHR-IDA
18h 42m2 stops
United Airlines Logo
5:00 am - 5:55 amIDA-LHR
17h 55m2 stops
$901United Airlines
Find Deal
Sat, Nov 22 - Wed, Nov 26
United Airlines Logo
7:30 am - 9:03 pmLHR-IDA
19h 33m2 stops
United Airlines Logo
2:45 pm - 9:40 amIDA-LHR
11h 55m1 stop
$904United Airlines
Find Deal
Wed, Oct 29 - Wed, Nov 5
United Airlines Logo
11:35 am - 9:03 pmLHR-IDA
15h 28m1 stop
United Airlines Logo
10:50 am - 9:40 amIDA-LHR
15h 50m1 stop
$934United Airlines
Find Deal
Wed, Oct 29 - Wed, Nov 5

American Airlines flights from London Heathrow Airport to Idaho Falls

Our best American Airlines deals on London Heathrow Airport to Idaho Falls flight tickets
American Airlines
Nov 22
LHR2:25 pmLondon Heathrow
15h 09m
1 stop
IDA10:34 pmIdaho Falls Fanning Field
Nov 26
IDA7:10 amIdaho Falls Fanning Field
29h 50m
2 stops
LHR8:00 pmLondon Heathrow
$809
Find similar
American Airlines
Nov 22
LHR10:05 amLondon Heathrow
19h 29m
2 stops
IDA10:34 pmIdaho Falls Fanning Field
Nov 26
IDA7:10 amIdaho Falls Fanning Field
29h 50m
2 stops
LHR8:00 pmLondon Heathrow
$818
Find similar
American Airlines
Nov 22
LHR10:05 amLondon Heathrow
19h 29m
2 stops
IDA10:34 pmIdaho Falls Fanning Field
Nov 26
IDA7:10 amIdaho Falls Fanning Field
29h 50m
2 stops
LHR8:00 pmLondon Heathrow
$819
Find similar

Delta flights from London Heathrow Airport to Idaho Falls

Our best Delta deals on London Heathrow Airport to Idaho Falls flight tickets
Delta
Nov 22
LHR6:20 amLondon Heathrow
18h 57m
2 stops
IDA6:17 pmIdaho Falls Fanning Field
Nov 26
IDA6:00 amIdaho Falls Fanning Field
21h 00m
1 stop
LHR10:00 amLondon Heathrow
$817
Find similar
Delta
Nov 22
LHR10:45 amLondon Heathrow
18h 48m
1 stop
IDA10:33 pmIdaho Falls Fanning Field
Nov 26
IDA6:00 amIdaho Falls Fanning Field
21h 00m
1 stop
LHR10:00 amLondon Heathrow
$829
Find similar
Delta
Nov 22
LHR10:45 amLondon Heathrow
14h 32m
1 stop
IDA6:17 pmIdaho Falls Fanning Field
Nov 26
IDA6:00 amIdaho Falls Fanning Field
21h 00m
1 stop
LHR10:00 amLondon Heathrow
$830
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from London Heathrow Airport 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 September 15, 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Idaho Falls that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 11/22

2:25 pm-10:34 pm

1 stop15h 09m

Idaho Falls Fanning Field

Wed 11/26

7:10 am-8:00 pm

2 stops29h 50m

$809

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 11/22

6:20 am-6:17 pm

2 stops18h 57m

Idaho Falls Fanning Field

Wed 11/26

6:00 am-10:00 am

1 stop21h 00m

$817

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 11/22

10:05 am-10:34 pm

2 stops19h 29m

Idaho Falls Fanning Field

Wed 11/26

7:10 am-8:00 pm

2 stops29h 50m

$818

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 11/22

10:05 am-10:34 pm

2 stops19h 29m

Idaho Falls Fanning Field

Wed 11/26

7:10 am-8:00 pm

2 stops29h 50m

$819

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 11/22

10:45 am-10:33 pm

1 stop18h 48m

Idaho Falls Fanning Field

Wed 11/26

6:00 am-10:00 am

1 stop21h 00m

$829

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 11/22

10:45 am-6:17 pm

1 stop14h 32m

Idaho Falls Fanning Field

Wed 11/26

6:00 am-10:00 am

1 stop21h 00m

$830

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 11/22

11:10 am-10:52 pm

2 stops18h 42m

Idaho Falls Fanning Field

Wed 11/26

5:00 am-5:55 am

2 stops17h 55m

$901

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Wed 10/29

7:30 am-9:03 pm

2 stops19h 33m

Idaho Falls Fanning Field

Wed 11/5

2:45 pm-9:40 am

1 stop11h 55m

$904

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Wed 10/29

11:35 am-9:03 pm

1 stop15h 28m

Idaho Falls Fanning Field

Wed 11/5

10:50 am-9:40 am

1 stop15h 50m

$934

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Thu 10/16

7:30 am-4:14 pm

2 stops39h 44m

$620

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 resultsSorted by cheapest first
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When to book flights from London Heathrow Airport to Idaho Falls

Are you open to changing your travel dates? Check out the ideal times to fly from London Heathrow Airport to Idaho Falls according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap London Heathrow Airport to Idaho Falls (LHR to IDA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Idaho Falls

Direct flights

None
There are no direct flights from London Heathrow Airport to Idaho Falls. There are no popular flight routes from London Heathrow Airport to Idaho Falls.
Search flight deals

  • How far is London Heathrow to Idaho Falls Fanning Field by plane?

    Idaho Falls Fanning Field is 4706.6 mi away from London Heathrow. In terms of flight time, this usually takes a little over 14h 32m.

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

    Prices for flights from London Heathrow Airport to Idaho Falls Fanning Field Airport are updated daily.

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

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

    The required travel and health documents for your Idaho Falls Fanning Field Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Idaho Falls Fanning Field Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • How do I get Price Alerts for flights from London Heathrow Airport to Idaho Falls?

    Price Alerts will notify you by email when the price for flights to Idaho Falls from London Heathrow Airport decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.

  • How can I save money on flights from London Heathrow Airport to Idaho Falls with momondo?

    Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.

  • How does momondo find its flight prices?

    We compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

Traveling to a place near Idaho Falls?

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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?

momondo does allow users to show only those flights to Idaho Falls from London which offer a flexible booking policy as well as other useful filters and features.

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

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

Of course. momondo tracks the price of London to Idaho Falls flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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