Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from London to Idaho Falls from £510

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 20/6. 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
0 bags

Discover deals from 900+ travel sites with momondo.

Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from London to Idaho Falls

Cheap return flights

Enter your travel dates to find the best prices.
Virgin Atlantic Logo
15:45 - 18:15
LHR
-
IDA
32h 30m
2 stops
Virgin Atlantic Logo
13:10 - 10:30
IDA
-
LHR
15h 20m
2 stops
£722Virgin Atlantic
Mon, 9 Mar - Mon, 16 Mar
American Airlines Logo
16:10 - 13:48
LHR
-
IDA
27h 38m
1 stop
American Airlines Logo
14:18 - 11:40
IDA
-
LHR
15h 22m
1 stop
£754American Airlines
Mon, 9 Mar - Mon, 16 Mar
United Airlines Logo
10:25 - 20:58
LHR
-
IDA
17h 33m
2 stops
United Airlines Logo
14:40 - 20:35
IDA
-
LHR
22h 55m
2 stops
£1,093United Airlines
Wed, 18 Feb - Sun, 22 Feb
United Airlines Logo
09:10 - 20:58
LHR
-
IDA
18h 48m
2 stops
United Airlines Logo
14:40 - 20:35
IDA
-
LHR
22h 55m
2 stops
£1,101United Airlines
Wed, 18 Feb - Sun, 22 Feb
United Airlines Logo
11:35 - 20:58
LHR
-
IDA
16h 23m
1 stop
United Airlines Logo
10:45 - 09:40
IDA
-
LHR
15h 55m
1 stop
£1,115United Airlines
Wed, 18 Feb - Sun, 22 Feb
United Airlines Logo
11:35 - 20:58
LHR
-
IDA
16h 23m
1 stop
United Airlines Logo
14:40 - 09:40
IDA
-
LHR
12h 00m
1 stop
£1,123United Airlines
Wed, 18 Feb - Sun, 22 Feb
Multiple Airlines Logo
10:20 - 12:27
LHR
-
IDA
32h 07m
3 stops
Multiple Airlines Logo
05:45 - 09:20
IDA
-
LHR
21h 35m
3 stops
£1,837Multiple Airlines
Mon, 9 Mar - Mon, 16 Mar

American Airlines flights from London to Idaho Falls

Our best American Airlines deals on London to Idaho Falls flight tickets
American Airlines
9 Mar
LHR16:10London Heathrow
27h 38m
1 stop
IDA13:48Idaho Falls Fanning Field
16 Mar
IDA14:18Idaho Falls Fanning Field
15h 22m
1 stop
LHR11:40London Heathrow
£754
American Airlines
12 Feb
LGW12:30London Gatwick
32h 18m
2 stops
IDA13:48Idaho Falls Fanning Field
20 Feb
IDA14:18Idaho Falls Fanning Field
34h 12m
2 stops
LGW07:30London Gatwick
£2,320

United Airlines flights from London to Idaho Falls

Our best United Airlines deals on London to Idaho Falls flight tickets
United Airlines
18 Feb
LHR10:25London Heathrow
17h 33m
2 stops
IDA20:58Idaho Falls Fanning Field
22 Feb
IDA14:40Idaho Falls Fanning Field
22h 55m
2 stops
LHR20:35London Heathrow
£1,093
United Airlines
18 Feb
LHR09:10London Heathrow
18h 48m
2 stops
IDA20:58Idaho Falls Fanning Field
22 Feb
IDA14:40Idaho Falls Fanning Field
22h 55m
2 stops
LHR20:35London Heathrow
£1,101
United Airlines
18 Feb
LHR11:35London Heathrow
16h 23m
1 stop
IDA20:58Idaho Falls Fanning Field
22 Feb
IDA10:45Idaho Falls Fanning Field
15h 55m
1 stop
LHR09:40London Heathrow
£1,115

momondo Fare Finder

 
Customise 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 279,928 searches. Data last updated 8 February 2026.
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

LHR - IDA

LHRIDA

London Heathrow

Mon 9/3

15:45-18:15

2 stops32h 30m

Idaho Falls Fanning Field

Mon 16/3

13:10-10:30

2 stops15h 20m

£722

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Mon 9/3

16:10-13:48

1 stop27h 38m

Idaho Falls Fanning Field

Mon 16/3

14:18-11:40

1 stop15h 22m

£754

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Wed 18/2

10:25-20:58

2 stops17h 33m

Idaho Falls Fanning Field

Sun 22/2

14:40-20:35

2 stops22h 55m

£1,093

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Wed 18/2

09:10-20:58

2 stops18h 48m

Idaho Falls Fanning Field

Sun 22/2

14:40-20:35

2 stops22h 55m

£1,101

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Wed 18/2

11:35-20:58

1 stop16h 23m

Idaho Falls Fanning Field

Sun 22/2

10:45-09:40

1 stop15h 55m

£1,115

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Wed 18/2

11:35-20:58

1 stop16h 23m

Idaho Falls Fanning Field

Sun 22/2

14:40-09:40

1 stop12h 00m

£1,123

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Mon 9/3

10:20-12:27

3 stops32h 07m

Idaho Falls Fanning Field

Mon 16/3

05:45-09:20

3 stops21h 35m

£1,837

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 20/6

21:10-16:08

3 stops49h 58m

£510

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 20/6

18:10-15:40

2 stops52h 30m

£632

LondonIdaho Falls

LHR - IDA

LHRIDA

London Heathrow

Sat 20/6

17:00-23:59

1 stop13h 59m

£637

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

See travel insights to Idaho Falls from

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

What is the cheapest airline that flies from London to Idaho Falls Fanning Field?

Alaska Airlines is the most popular carrier operating from London to Idaho Falls Fanning Field

Which airlines fly to Idaho Falls?

United Airlines, Lufthansa and Virgin Atlantic are the top three most popular airlines that fly to Idaho Falls from London according to our data. United Airlines is the first choice among our users, with 57% of people opting to fly with this airline when travelling to Idaho Falls. Keep in mind that there are 3 different airlines that fly to Idaho Falls on a routine basis, so you have a few additional options to choose from.

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 return 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

Fastest flight time

14h 19m

Direct flights

None
The fastest flight from London to Idaho Falls takes 14h 19m
There are no direct flights from London to Idaho Falls. There are no popular flight routes from London to Idaho Falls.
Search flight deals

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

    The distance between London and Idaho Falls Fanning Field is about 4715.6 mi. By plane, this route typically takes 14h 19m.

  • 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 many operators does momondo search for flights from London to Idaho Falls Fanning Field Airport?

  • How old do you have to be to fly from London 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 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 required for your trip to Idaho Falls Fanning Field Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Idaho Falls Fanning Field Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from London to Idaho Falls?

Best airlines flying from London to Idaho Falls

Compare and see reviews for airlines that fly from London to Idaho Falls with momondo
Airline
Rating
Free Cancellation
Price
Virgin AtlanticPriceFrom £631Free CancellationRating
7.5
678 reviews
Search Virgin Atlantic flights
United AirlinesPriceFrom £747Free CancellationRating
7.4
9,254 reviews
Search United Airlines flights

Why use momondo?

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

It is quick and easy to find London to Idaho Falls flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Idaho Falls that suits you.

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

Flights from London to Idaho Falls with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo helps you find the best flight between London and Idaho Falls by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are simply researching potential flights to Idaho Falls, momondo offers a useful price alert feature which will track prices for flights to Idaho Falls from London and alert you when they change.

An easier way to manage your Idaho Falls trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Tue 10/3
Tue 17/3
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States