$1,177 Cheap Flights from London (LCY) to Idaho Falls (IDA)

View $1,177 flight on Tue, Apr 14, 2026Opens in a new window

Popular airlines from London City Airport (LCY) to Idaho Falls Regional Airport (IDA)

Cheap Flights from London to Idaho Falls (LCY-IDA)

Prices were available within the past 7 days and start at $1,177 for one-way flights and $1,399 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Aer Lingus
Thu, Oct 16 - Thu, Oct 23
LCY
London
IDA
Idaho Falls
$1,399 Roundtrip, found 3 days ago
$1,399
Roundtrip
found 3 days ago
Select Aer Lingus flight, departing Thu, Oct 16 from London to Idaho Falls, returning Thu, Oct 23, priced at $1,399 found 3 days ago
Aer Lingus
Thu, Oct 16 - Thu, Oct 23
LCY
London
IDA
Idaho Falls
$1,412 Roundtrip, found 3 days ago
$1,412
Roundtrip
found 3 days ago
Select Aer Lingus flight, departing Thu, Oct 16 from London to Idaho Falls, returning Thu, Oct 23, priced at $1,412 found 3 days ago
Aer Lingus
Thu, Oct 16 - Thu, Oct 23
LCY
London
IDA
Idaho Falls
$1,419 Roundtrip, found 3 days ago
$1,419
Roundtrip
found 3 days ago
Select Aer Lingus flight, departing Thu, Oct 16 from London to Idaho Falls, returning Thu, Oct 23, priced at $1,419 found 3 days ago
Aer Lingus
Thu, Oct 16 - Thu, Oct 23
LCY
London
IDA
Idaho Falls
$1,425 Roundtrip, found 3 days ago
$1,425
Roundtrip
found 3 days ago
Select Aer Lingus flight, departing Thu, Oct 16 from London to Idaho Falls, returning Thu, Oct 23, priced at $1,425 found 3 days ago
Aer Lingus
Thu, Oct 16 - Thu, Oct 23
LCY
London
IDA
Idaho Falls
$1,431 Roundtrip, found 3 days ago
$1,431
Roundtrip
found 3 days ago
Select Aer Lingus flight, departing Thu, Oct 16 from London to Idaho Falls, returning Thu, Oct 23, priced at $1,431 found 3 days ago
Aer Lingus
Thu, Oct 16 - Thu, Oct 23
LCY
London
IDA
Idaho Falls
$1,433 Roundtrip, found 3 days ago
$1,433
Roundtrip
found 3 days ago
Select Aer Lingus flight, departing Thu, Oct 16 from London to Idaho Falls, returning Thu, Oct 23, priced at $1,433 found 3 days ago
Aer Lingus
Thu, Oct 16 - Thu, Oct 23
LCY
London
IDA
Idaho Falls
$1,436 Roundtrip, found 3 days ago
$1,436
Roundtrip
found 3 days ago
Select Aer Lingus flight, departing Thu, Oct 16 from London to Idaho Falls, returning Thu, Oct 23, priced at $1,436 found 3 days ago
Aer Lingus
Thu, Oct 16 - Thu, Oct 23
LCY
London
IDA
Idaho Falls
$1,438 Roundtrip, found 3 days ago
$1,438
Roundtrip
found 3 days ago
Select Aer Lingus flight, departing Thu, Oct 16 from London to Idaho Falls, returning Thu, Oct 23, priced at $1,438 found 3 days ago
Aer Lingus
Thu, Oct 16 - Thu, Oct 23
LCY
London
IDA
Idaho Falls
$1,444 Roundtrip, found 3 days ago
$1,444
Roundtrip
found 3 days ago
Select Aer Lingus flight, departing Thu, Oct 16 from London to Idaho Falls, returning Thu, Oct 23, priced at $1,444 found 3 days ago
Aer Lingus
Thu, Oct 16 - Thu, Oct 23
LCY
London
IDA
Idaho Falls
$1,445 Roundtrip, found 3 days ago
$1,445
Roundtrip
found 3 days ago
Select Aer Lingus flight, departing Thu, Oct 16 from London to Idaho Falls, returning Thu, Oct 23, priced at $1,445 found 3 days ago
Aer Lingus
Thu, Oct 16 - Thu, Oct 23
LCY
London
IDA
Idaho Falls
$1,446 Roundtrip, found 3 days ago
$1,446
Roundtrip
found 3 days ago
Select Aer Lingus flight, departing Thu, Oct 16 from London to Idaho Falls, returning Thu, Oct 23, priced at $1,446 found 3 days ago
Aer Lingus
Thu, Oct 16 - Thu, Oct 23
LCY
London
IDA
Idaho Falls
$1,448 Roundtrip, found 3 days ago
$1,448
Roundtrip
found 3 days ago
Select Aer Lingus flight, departing Thu, Oct 16 from London to Idaho Falls, returning Thu, Oct 23, priced at $1,448 found 3 days ago
Flights from London (LCY) to Idaho Falls (IDA)
Origin airport
London City
Destination airport
Idaho Falls Regional
Roundtrip price
$1,399
Distance
4722 mi

London to Idaho Falls Flights

The cheapest times to fly from London to Idaho Falls

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from London to Idaho Falls are during the month of October. You can find some of the cheapest flights from London to Idaho Falls with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from London to Idaho Falls

Sunday is one of the best days to book for cheap flights from London to Idaho Falls: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from London to Idaho Falls

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from London to Idaho Falls in 2025. You can also book with separate airlines for your outbound and return journeys, from $1,177 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap London to Idaho Falls flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your London to Idaho Falls airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from London City Airport (LCY) to Idaho Falls Regional Airport (IDA) cost?
Grab a cheap one-way flight from $1,177 or cheap return flight from $1,399 from London City Airport (LCY) to Idaho Falls Regional Airport (IDA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from London City Airport (LCY) to Idaho Falls Regional Airport (IDA)?
The cheapest month to fly from LCY to IDA is October, when demand is low. Off-peak months are generally when airlines offer better prices between these airports.
What is the cheapest airline that flies from London City Airport (LCY) to Idaho Falls Regional Airport (IDA)?
Expedia's filter tool lets you easily compare airlines, flight times and baggage options all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest LCY to IDA flight.
How many flights per day from London City Airport (LCY) to Idaho Falls Regional Airport (IDA)?
You'll have to take a flight with a layover when traveling from London City Airport (LCY) to Idaho Falls Regional Airport (IDA). Direct flights don't operate daily on this route. However, just filter your search to include one or two stops to find an option that works for you.
What day of the week has the most flights from LCY to IDA?
You'll typically find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from London City Airport (LCY) to Idaho Falls Regional Airport (IDA)?
To avoid possible delays on the London City Airport (LCY) to Idaho Falls Regional Airport (IDA) route, travel before 3 PM. Later departures are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from London City Airport (LCY) to Idaho Falls Regional Airport (IDA) last-minute?
Booking your flight from LCY to IDA shortly before your journey is typically more expensive. But if there's some wiggle room with your travel dates and times, you could snag a cheap last-minute fare.
Is it cheaper to book a LCY to IDA flight and hotel package?
Opting for a LCY to IDA flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip in one place. Select from our wide range of accommodations and then add car rentals, flights and activities to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from London City Airport (LCY) to Idaho Falls Regional Airport (IDA)?
Typically, you can cancel or reschedule your LCY to IDA flight. However, additional charges may apply, especially if your booking was made more than 24 hours ago. Double-check your itinerary for the airline's guidelines and fees on flight changes, or if you need further details, visit our Customer Service portal.

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*Available to One Key members.