LHR - IDA

$540 Find Cheap Flights from London to Idaho Falls - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$972
Typical prices: $1,147-$1,541
Alaska Airlines
Sun 1/28Thu 2/1
LHR - IDA • 1 stop
Cheapest one-way
$540
Typical prices: $725-$1,199
Multiple Airlines
Mon 12/3
LHR - IDA • 3 stops
Nonstop flights
Not available
There are currently no direct flights between London Heathrow Airport and Idaho Falls. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to travel
January
Cheapest • 32% price drop
July
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Seattle/Tacoma Intl (SEA)
Cheapest • Avg $1,004 (round-trip)
Denver Intl (DEN)
Shortest trip • 12h 26m (one-way)
Insights
Insights
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Flight Deals

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

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from London to Idaho Falls

Thu, Jan 28 - Mon, Feb 1
Alaska Airlines Logo
2:45 pm - 3:21 pmLHR  London Heathrow-IDA Idaho Falls Fanning Field
31h 36m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
1:56 pm - 12:20 pmIDA  Idaho Falls Fanning Field-LHR London Heathrow
15h 24m1 stop Seattle/Tacoma Intl
$972Alaska Airlines
Thu, Jan 28 - Mon, Feb 1
Alaska Airlines Logo
2:45 pm - 3:21 pmLHR  London Heathrow-IDA Idaho Falls Fanning Field
31h 36m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
1:56 pm - 12:20 pmIDA  Idaho Falls Fanning Field-LHR London Heathrow
15h 24m1 stop Seattle/Tacoma Intl
$974Alaska Airlines
Thu, Jan 28 - Mon, Feb 1
Alaska Airlines Logo
2:45 pm - 3:21 pmLHR  London Heathrow-IDA Idaho Falls Fanning Field
31h 36m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
1:56 pm - 12:20 pmIDA  Idaho Falls Fanning Field-LHR London Heathrow
15h 24m1 stop Seattle/Tacoma Intl
$1,128Alaska Airlines
Thu, Jan 28 - Mon, Feb 1
Alaska Airlines Logo
2:45 pm - 3:21 pmLHR  London Heathrow-IDA Idaho Falls Fanning Field
31h 36m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
1:56 pm - 12:20 pmIDA  Idaho Falls Fanning Field-LHR London Heathrow
15h 24m1 stop Seattle/Tacoma Intl
$1,129Alaska Airlines
Thu, Jan 28 - Mon, Feb 1
Alaska Airlines Logo
2:45 pm - 3:21 pmLHR  London Heathrow-IDA Idaho Falls Fanning Field
31h 36m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
1:56 pm - 12:20 pmIDA  Idaho Falls Fanning Field-LHR London Heathrow
15h 24m1 stop Seattle/Tacoma Intl
$1,131Alaska Airlines
Tue, Nov 17 - Mon, Nov 30
Multiple Airlines Logo
11:50 am - 9:43 pmLHR  London Heathrow-IDA Idaho Falls Fanning Field
16h 53m1 stop Dallas/Fort Worth
Multiple Airlines Logo
1:43 pm - 10:25 amIDA  Idaho Falls Fanning Field-LHR London Heathrow
37h 42m2 stops Dallas/Fort Worth Toronto Pearson Intl
$1,168Multiple Airlines
Tue, Nov 17 - Mon, Nov 30
American Airlines Logo
8:20 am - 9:43 pmLHR  London Heathrow-IDA Idaho Falls Fanning Field
20h 23m1 stop Dallas/Fort Worth
American Airlines Logo
8:00 am - 12:10 pmIDA  Idaho Falls Fanning Field-LHR London Heathrow
21h 10m1 stop Dallas/Fort Worth
$1,193American Airlines
Thu, Jan 28 - Mon, Feb 1
Alaska Airlines Logo
2:45 pm - 10:53 pmLHR  London Heathrow-IDA Idaho Falls Fanning Field
15h 08m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
3:58 pm - 12:20 pmIDA  Idaho Falls Fanning Field-LHR London Heathrow
37h 22m2 stops Portland Seattle/Tacoma Intl
$1,194Alaska Airlines
Thu, Jan 28 - Mon, Feb 1
Alaska Airlines Logo
2:45 pm - 10:53 pmLHR  London Heathrow-IDA Idaho Falls Fanning Field
15h 08m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
3:58 pm - 12:20 pmIDA  Idaho Falls Fanning Field-LHR London Heathrow
37h 22m2 stops Portland Seattle/Tacoma Intl
$1,196Alaska Airlines
Thu, Jan 28 - Mon, Feb 1
Alaska Airlines Logo
2:45 pm - 10:53 pmLHR  London Heathrow-IDA Idaho Falls Fanning Field
15h 08m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
3:58 pm - 12:20 pmIDA  Idaho Falls Fanning Field-LHR London Heathrow
37h 22m2 stops Portland Seattle/Tacoma Intl
$1,198Alaska Airlines
Booking Insights

Price, demand and travel trends for London Heathrow Airport to Idaho Falls flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from London Heathrow Airport to Idaho Falls?

Round-trip flights from London Heathrow Airport to Idaho Falls typically range from $1,147 to $1,541. The lowest price found in the past 5 days was $972, on Alaska Airlines.

What's the cheapest day of the week to fly from London Heathrow Airport to Idaho Falls?

Based on deals KAYAK users found in the last 12 months, Wednesday is the cheapest day of the week to fly from London Heathrow Airport to Idaho Falls. It’s 32% cheaper than the average day, while Monday is the most expensive, with prices 25% higher.

Find deals

Key details for London Heathrow Airport to Idaho Falls flights

Low season

October

Cheapest flight

$540
Beat the crowds with an average 83% drop in travelers.
The most popular month to fly with an average 103% increase in travelers.
One-way flight from London Heathrow Airport to Idaho Falls

When to book flights from London to Idaho Falls

Are your dates flexible? Find out the best times to travel from London to Idaho Falls based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your London Heathrow Airport to Idaho Falls flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • How long is a flight from London Heathrow Airport to Idaho Falls?

    A nonstop flight from London Heathrow Airport to Idaho Falls takes 00m, covering 4,705 miles.

  • Do I need a passport to fly from London Heathrow Airport to Idaho Falls?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much should I expect to pay for a London Heathrow Airport to Idaho Falls flight?

    Round-trip flights from London Heathrow Airport to Idaho Falls range from $1,147 to $1,541, with an average of $1,393 over the past 12 months. Anything below $1,147 counts as a good deal.

  • Have flight prices from London Heathrow Airport to Idaho Falls changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $972 to $5,653. That means the highest observed fare was about 6x higher than the lowest one.

  • How are flight prices from London Heathrow Airport to Idaho Falls looking right now?

    One-way fares from London Heathrow Airport to Idaho Falls are currently lower than usual. Average one-way flight prices are about $618, which is 27% below the typical average for this route.

  • What car rental options are available at Idaho Falls Fanning Field Airport (IDA)?

    Idaho Falls Fanning Field Airport (IDA) hosts 5 major car rental companies, with daily rates averaging $96 for economy cars. Top options include:

    • Alamo
    • Hertz
    • Enterprise Rent-A-Car
    • Budget
    • National

  • Which airports can I use when flying from London Heathrow Airport to Idaho Falls?

    Flights from London Heathrow Airport to Idaho Falls usually depart from London Heathrow (LHR) and arrive at Idaho Falls Fanning Field (IDA).

  • Which airports do connecting flights from London Heathrow Airport to Idaho Falls pass through?

    One-stop flights from London Heathrow Airport to Idaho Falls most commonly connect through:

    • Denver Intl (DEN) - 57% of one-stop connections
    • Salt Lake City (SLC) - 23% of one-stop connections
    • Seattle/Tacoma Intl (SEA) - 11% of one-stop connections
    • Dallas/Fort Worth (DFW) - 9% of one-stop connections

  • Can I save money by using flexible dates for flights from London Heathrow Airport to Idaho Falls?

    Yes. Flexible dates can save you up to 46% on flights from London Heathrow Airport to Idaho Falls. Wednesday is the cheapest departure day at $959 round-trip on average, while Monday is the most expensive at $1,751, a difference of $792.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • How much time can I save by choosing a different layover airport from London Heathrow Airport to Idaho Falls?

    Flying via Denver Intl (DEN) gives the shortest average 1-stop total travel time at 12h 26m, compared with 13h 54m via Salt Lake City (SLC) and 15h 12m via Dallas/Fort Worth (DFW).

  • What is the time difference between London Heathrow Airport and Idaho Falls?

    Idaho Falls is 6 hours behind London Heathrow Airport (Mountain Time vs British Time). Plan for the time shift when scheduling connections or first-day activities.

Your guide to booking London Heathrow Airport to Idaho Falls flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Wednesday departure and avoid flying on Monday. On this route, Wednesday flights average $959, about $792 less than Monday fares (45% savings) based on the last 12 months.
  • If you can choose when to travel, plan your London Heathrow Airport to Idaho Falls trip for January. Fares historically average $946 round-trip in that month - typically $607 less than the most expensive month, which is August (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Idaho Falls Fanning Field Airport.

    • Tru by Hilton Idaho Falls
    • Comfort Suites Idaho Falls
    • Best Western Plus CottonTree Inn

More options for your flight from London to Idaho Falls

Complete your trip to Idaho Falls with a hotel stay or car rental

Car rentals in Idaho Falls
Hotels in Idaho Falls
Vacations in Idaho Falls