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£243 Cheap Flights from Idaho Falls (IDA) to London (LHR)

View £243 flight on Tue, 20 Apr 2027Opens in a new window

Popular airlines from Idaho Falls Regional Airport (IDA) to Heathrow Airport (LHR)

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Cheap Flights from Idaho Falls (IDA) to London (LHR)

Prices were available within the past 7 days and start at £243 for one-way flights and £652 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

KLM
Wed, 7 Apr - Wed, 21 Apr
IDA
Idaho Falls
LHR
London
£652 Return, found 6 days ago
£652
Return
found 6 days ago
Select KLM flight, departing Wed, 7 Apr from Idaho Falls to London, returning Wed, 21 Apr, priced at £652 found 6 days ago
Virgin Atlantic
Wed, 7 Apr - Wed, 21 Apr
IDA
Idaho Falls
LHR
London
£653 Return, found 6 days ago
£653
Return
found 6 days ago
Select Virgin Atlantic flight, departing Wed, 7 Apr from Idaho Falls to London, returning Wed, 21 Apr, priced at £653 found 6 days ago
Alaska Airlines
Wed, 7 Apr - Wed, 21 Apr
IDA
Idaho Falls
LHR
London
£654 Return, found 6 days ago
£654
Return
found 6 days ago
Select Alaska Airlines flight, departing Wed, 7 Apr from Idaho Falls to London, returning Wed, 21 Apr, priced at £654 found 6 days ago
Virgin Atlantic
Wed, 7 Apr - Wed, 21 Apr
IDA
Idaho Falls
LHR
London
£657 Return, found 6 days ago
£657
Return
found 6 days ago
Select Virgin Atlantic flight, departing Wed, 7 Apr from Idaho Falls to London, returning Wed, 21 Apr, priced at £657 found 6 days ago
Air France
Wed, 7 Apr - Wed, 21 Apr
IDA
Idaho Falls
LHR
London
£673 Return, found 6 days ago
£673
Return
found 6 days ago
Select Air France flight, departing Wed, 7 Apr from Idaho Falls to London, returning Wed, 21 Apr, priced at £673 found 6 days ago
Air France
Wed, 7 Apr - Wed, 21 Apr
IDA
Idaho Falls
LHR
London
£678 Return, found 6 days ago
£678
Return
found 6 days ago
Select Air France flight, departing Wed, 7 Apr from Idaho Falls to London, returning Wed, 21 Apr, priced at £678 found 6 days ago
Alaska Airlines
Tue, 20 Oct - Thu, 29 Oct
IDA
Idaho Falls
LHR
London
£684 Return, found 6 days ago
£684
Return
found 6 days ago
Select Alaska Airlines flight, departing Tue, 20 Oct from Idaho Falls to London, returning Thu, 29 Oct, priced at £684 found 6 days ago
Air France
Wed, 7 Apr - Wed, 21 Apr
IDA
Idaho Falls
LHR
London
£694 Return, found 6 days ago
£694
Return
found 6 days ago
Select Air France flight, departing Wed, 7 Apr from Idaho Falls to London, returning Wed, 21 Apr, priced at £694 found 6 days ago
Air France
Wed, 7 Apr - Wed, 21 Apr
IDA
Idaho Falls
LHR
London
£695 Return, found 6 days ago
£695
Return
found 6 days ago
Select Air France flight, departing Wed, 7 Apr from Idaho Falls to London, returning Wed, 21 Apr, priced at £695 found 6 days ago
Delta
Mon, 14 Sept - Sun, 20 Sept
IDA
Idaho Falls
LHR
London
£791 Return, found 1 day ago
£791
Return
found 1 day ago
Select Delta flight, departing Mon, 14 Sept from Idaho Falls to London, returning Sun, 20 Sept, priced at £791 found 1 day ago

Frequently asked questions

How much does a flight from Idaho Falls, ID (IDA-Idaho Falls Regional) to London (LHR-Heathrow) cost?
You can find one-way and return flights from IDA to LHR with Expedia. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see our cheapest fares first, and use the Price Tracking tool to receive alerts when IDA to LHR ticket fares go up or down.
What is the cheapest month to fly from Idaho Falls, ID (IDA-Idaho Falls Regional) to London (LHR-Heathrow)?
The cheapest months to fly from IDA to LHR are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Idaho Falls, ID (IDA-Idaho Falls Regional) to London (LHR-Heathrow)?
Enter IDA to LHR and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Idaho Falls, ID (IDA-Idaho Falls Regional) to London (LHR-Heathrow)?
American Airlines is one of the cheapest airlines offering connecting flights from Idaho Falls Regional (IDA) to London Heathrow (LHR), with return tickets starting from around £539 for flights that can be booked for departure within the next year. These flights typically include a layover in Sky Harbor Intl. (PHX). Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.
How do I find cheap flights from Idaho Falls, ID (IDA-Idaho Falls Regional) to London (LHR-Heathrow)?
To find a cheap flight from Idaho Falls, ID (IDA-Idaho Falls Regional) to London (LHR-Heathrow), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Idaho Falls, ID (IDA-Idaho Falls Regional) to London (LHR-Heathrow)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Idaho Falls, ID (IDA-Idaho Falls Regional) to London (LHR-Heathrow)?
There are approximately 12 connecting flights per day from Idaho Falls Regional (IDA) to London Heathrow (LHR). Some common connection points include Seattle - Tacoma Intl. (SEA), Denver Intl. (DEN), and Salt Lake City Intl. (SLC).
What is the earliest flight from Idaho Falls, ID (IDA-Idaho Falls Regional) to London (LHR-Heathrow)?
The earliest flight from Idaho Falls Regional (IDA) to London Heathrow (LHR) typically departs around 5:00 AM. This service is operated by United and Air Canada. This is a seasonal service, active in May and September. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Idaho Falls, ID (IDA-Idaho Falls Regional) to London (LHR-Heathrow)?
You'll typically find the most flights from Idaho Falls Regional (IDA) to London Heathrow (LHR) on a Wednesday, with around 20 flights available. This gives you a good selection for your travel plans. Major airlines on this route include Delta, United, and American Airlines.
What are the most popular departure times for flights from Idaho Falls, ID (IDA-Idaho Falls Regional) to London (LHR-Heathrow)?
The most popular departure times for flights from Idaho Falls Regional (IDA) to London Heathrow (LHR) are in the afternoon, from 12pm to 3pm. Many major carriers, including American Airlines, United and Delta, offer flights during this window. Many travellers prefer this because it allows for a relaxed morning before heading to the airport and an evening arrival at your destination.
How long does it take to fly from Idaho Falls, ID (IDA-Idaho Falls Regional) to London (LHR-Heathrow)?
There are no nonstop flights from Idaho Falls Regional (IDA) to London Heathrow (LHR). The shortest flights typically involve one stop and take around 12 hours 18 minutes. Flights with two or more stops usually take longer, averaging about 18 hours 18 minutes. The distance between these two airports is approximately 7,578 kilometers. Keep in mind that actual flight times can vary due to factors like routing, weather, and wind patterns.
Can you fly business or first class from Idaho Falls, ID (IDA-Idaho Falls Regional) to London (LHR-Heathrow)?
Yes, you can fly business class or first class between IDA and LHR. You can fly business class with Alaska Airlines and Delta.First class cabins are available on American Airlines.
How do I earn miles on a Idaho Falls, ID (IDA-Idaho Falls Regional) to London (LHR-Heathrow) flight with Expedia?
It's easy to earn miles on a Idaho Falls, ID (IDA-Idaho Falls Regional) to London (LHR-Heathrow) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for London (LHR) from Idaho Falls, ID (IDA)?
If you're planning to travel to London from Idaho Falls Regional (IDA), you can fly directly into Heathrow Airport (LHR). Some flights may connect through major hubs like Salt Lake City Intl. (SLC), Denver Intl. (DEN), or Sky Harbor Intl. (PHX) before reaching London. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Idaho Falls, ID (IDA-Idaho Falls Regional) to London (LHR-Heathrow) at the last minute?
Typically, booking a last minute flight from Idaho Falls, ID (IDA-Idaho Falls Regional) to London (LHR-Heathrow) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Idaho Falls, ID (IDA-Idaho Falls Regional) to London (LHR-Heathrow) flight and hotel package?
Securing a Idaho Falls, ID (IDA-Idaho Falls Regional) to London (LHR-Heathrow) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Idaho Falls, ID (IDA-Idaho Falls Regional) to London (LHR-Heathrow)?
If you booked your Idaho Falls, ID (IDA-Idaho Falls Regional) to London (LHR-Heathrow) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Idaho Falls Regional
Destination airport
Heathrow
Airlines serving
Air France, Alaska Airlines, American Airlines, Delta, KLM, United, Virgin Atlantic
Return price
£652
Distance
7533 km

Book with confidence

Compare flights from Idaho Falls to London easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Idaho Falls to London. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Heathrow in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Idaho Falls Regional to Heathrow.  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Idaho Falls Regional (IDA) to Heathrow (LHR)

The easiest way to view the best deals on flights from Idaho Falls to London today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Idaho Falls Regional to Heathrow start at just £652 and range up to £791.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Idaho Falls and London
  • booking your flight during April, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Idaho Falls to London flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Idaho Falls Regional to Heathrow for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Idaho Falls to London easily and book with confidence

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*Available to Expedia members.