Question 1

What is the cheapest flight from Idaho Falls to London Heathrow Airport?

Accepted Answer

In the last 3 days, the lowest price for a flight from Idaho Falls to London Heathrow Airport was $2,447 for a one-way ticket and $900 for a round-trip. <a href='/flight-routes/Idaho-Falls-Fanning-Field-IDA/London-Heathrow-LHR'>Visit our flight page for the latest deals!>/a>

Question 2

Do I need a passport to fly between Idaho Falls and London?

Accepted Answer

Yes <a href='/flight-routes/Idaho-Falls-Fanning-Field-IDA/London-Heathrow-LHR'>Visit our flight page for the latest deals!>/a>

Question 3

Which airports will I be using when flying from Idaho Falls to London?

Accepted Answer

When flying out of Idaho Falls you will be using Idaho Falls Fanning Field. You will be landing at London, also known as London Heathrow. <a href='/flight-routes/Idaho-Falls-Fanning-Field-IDA/London-Heathrow-LHR'>Visit our flight page for the latest deals!>/a>

Question 4

Which aircraft models fly most regularly from Idaho Falls to London?

Accepted Answer

We unfortunately don’t have that data for this specific route.

Question 5

How does KAYAK find such low prices on flights from Idaho Falls to London?

Accepted Answer

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Idaho Falls to London. <a href='/flight-routes/Idaho-Falls-Fanning-Field-IDA/London-Heathrow-LHR'>Visit our flight page for the latest deals!>/a>

Question 6

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Idaho Falls to London?

Accepted Answer

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from Idaho Falls is likely to change within 7 days, so travelers know whether to wait or book now. <a href='/flight-routes/Idaho-Falls-Fanning-Field-IDA/London-Heathrow-LHR'>Visit our flight page for the latest deals!>/a>

Question 7

What is the Hacker Fare option on flights from Idaho Falls to London?

Accepted Answer

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to London with an airline and back to Idaho Falls with another airline. Booking your flights between Idaho Falls and LHR can sometimes prove cheaper using this method. <a href='/flight-routes/Idaho-Falls-Fanning-Field-IDA/London-Heathrow-LHR'>Visit our flight page for the latest deals!>/a>

Question 8

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Idaho Falls to London?

Accepted Answer

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London from Idaho Falls up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. <a href='/flight-routes/Idaho-Falls-Fanning-Field-IDA/London-Heathrow-LHR'>Visit our flight page for the latest deals!>/a>

Question 9

What is the cheapest layover airport when flying from Idaho Falls to London?

Accepted Answer

Flights via Denver (DEN) offer the most affordable fares, with an average round-trip price of $859.

Question 10

What is the most popular layover airport when flying from Idaho Falls to London?

Accepted Answer

Denver (DEN) is the top choice – 80% of KAYAK users who clicked on 1-stop flights from Idaho Falls to London picked an itinerary connecting there.

Question 11

Which layover airport has the quickest connection when flying from Idaho Falls to London?

Accepted Answer

If you prefer a quick connection, Salt Lake City (SLC) often has the shortest layovers from Idaho Falls to London, with an average of 2h 16m.

Question 12

Which layover airport offers the shortest total travel time from Idaho Falls to London?

Accepted Answer

Consider flying via Salt Lake City (SLC) for the shortest journey. The average one-way travel time for flights connecting there is 12h 35m.

Question 13

Which airlines provide the cheapest flights from Idaho Falls to London?

Accepted Answer

In the past 3 days, the cheapest round-trip tickets from Idaho Falls to London were found on Delta ($972) and United Airlines ($1,090).

Question 14

Which airlines provide the cheapest flights from Idaho Falls to London?

Accepted Answer

In the past 3 days, the cheapest round-trip tickets from Idaho Falls to London were found on Delta ($972) and United Airlines ($1,090).

IDA - LHR

$900 Find Cheap Flights from Idaho Falls to London

KAYAK searches hundreds of travel sites at once for deals on flights to London Heathrow Airport

Everything you should know

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

Recent round-trip flight deals from Idaho Falls to London

Recent one-way flight deals from Idaho Falls to London

KAYAK's insights & trends for Idaho Falls to London flights

Get data-powered insights and trends into flights from Idaho Falls to London to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Idaho Falls to London?

In the past 3 days, the cheapest round-trip tickets from Idaho Falls to London were found on Delta ($972) and United Airlines ($1,090).

What is the most popular layover airport when flying from Idaho Falls to London?

Denver (DEN) is the top choice – 80% of KAYAK users who clicked on 1-stop flights from Idaho Falls to London picked an itinerary connecting there.

What is the cheapest layover airport when flying from Idaho Falls to London?

Flights via Denver (DEN) offer the most affordable fares, with an average round-trip price of $859.

Which layover airport offers the shortest total travel time from Idaho Falls to London?

Consider flying via Salt Lake City (SLC) for the shortest journey. The average one-way travel time for flights connecting there is 12h 35m.

Which layover airport has the quickest connection when flying from Idaho Falls to London?

If you prefer a quick connection, Salt Lake City (SLC) often has the shortest layovers from Idaho Falls to London, with an average of 2h 16m.

Good to know

When to book flights from Idaho Falls to London

FAQs for booking Idaho Falls to London flights

What is the cheapest flight from Idaho Falls to London Heathrow Airport?

In the last 3 days, the lowest price for a flight from Idaho Falls to London Heathrow Airport was $2,447 for a one-way ticket and $900 for a round-trip.

Do I need a passport to fly between Idaho Falls and London?

Yes

Which airports will I be using when flying from Idaho Falls to London?

When flying out of Idaho Falls you will be using Idaho Falls Fanning Field. You will be landing at London, also known as London Heathrow.

Which aircraft models fly most regularly from Idaho Falls to London?

We unfortunately don’t have that data for this specific route.

How does KAYAK find such low prices on flights from Idaho Falls to London?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Idaho Falls to London.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Idaho Falls to London?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from Idaho Falls is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Idaho Falls to London?

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Idaho Falls to London?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London from Idaho Falls up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from Idaho Falls to London

Information on your arrival and departure airports

Cabin class types available on flights to London

Complete your trip to London with a hotel stay or car rental

Find direct flights to and from Idaho Falls and London

Flights to other popular destinations

Flights from domestic origins to London

Choose which airport to fly into in London

Find deals for your return flight