IDA - LHR

$555 Find Cheap Flights from Idaho Falls to London - Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$1,011
Typical prices: $844-$1,249
United Airlines
Sat 12/1Thu 12/6
IDA - LHR • 1 stop
Cheapest one-way
$555
Typical prices: $384-$468
Multiple Airlines
Tue 11/13
IDA - LHR • 2 stops
Nonstop flights
Not available
There are currently no direct flights between Idaho Falls and London Heathrow Airport. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to travel
March
Cheapest • 28% price drop
September
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Denver Intl (DEN)
Cheapest • Avg $912 (round-trip)
Salt Lake City (SLC)
Shortest trip • 14h 03m (one-way)
Insights
Insights
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We hope you love your trip to London Heathrow Airport!
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Booking Insights
Flight Deals

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

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

Recent round-trip flight deals from Idaho Falls to London

Wed, Apr 14 - Wed, Apr 21
Alaska Airlines Logo
4:03 pm - 3:05 pmIDA  Idaho Falls Fanning Field-LHR London Heathrow
16h 02m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
5:00 pm - 3:29 pmLHR  London Heathrow-IDA Idaho Falls Fanning Field
29h 29m1 stop Seattle/Tacoma Intl
$905Alaska Airlines
Wed, Apr 14 - Wed, Apr 21
Virgin Atlantic Logo
1:10 pm - 10:00 amIDA  Idaho Falls Fanning Field-LHR London Heathrow
13h 50m1 stop Salt Lake City
Virgin Atlantic Logo
8:40 am - 10:19 pmLHR  London Heathrow-IDA Idaho Falls Fanning Field
20h 39m2 stops Amsterdam Schiphol Salt Lake City
$920Virgin Atlantic
Wed, Apr 14 - Wed, Apr 21
KLM Logo
1:10 pm - 1:05 pmIDA  Idaho Falls Fanning Field-LHR London Heathrow
16h 55m2 stops Salt Lake City Minneapolis St Paul
KLM Logo
6:30 am - 6:14 pmLHR  London Heathrow-IDA Idaho Falls Fanning Field
18h 44m2 stops Amsterdam Schiphol Salt Lake City
$924KLM
Mon, Jan 11 - Wed, Jan 27
Alaska Airlines Logo
1:56 pm - 12:20 pmIDA  Idaho Falls Fanning Field-LHR London Heathrow
15h 24m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
2:45 pm - 10:52 pmLHR  London Heathrow-IDA Idaho Falls Fanning Field
15h 07m1 stop Seattle/Tacoma Intl
$986Alaska Airlines
Mon, Jan 11 - Wed, Jan 27
KLM Logo
1:10 pm - 5:00 pmIDA  Idaho Falls Fanning Field-LHR London Heathrow
20h 50m2 stops Salt Lake City Amsterdam Schiphol
KLM Logo
5:50 pm - 6:19 pmLHR  London Heathrow-IDA Idaho Falls Fanning Field
31h 29m2 stops Amsterdam Schiphol Salt Lake City
$998KLM
Tue, Dec 1 - Sun, Dec 6
United Airlines Logo
2:40 pm - 9:40 amIDA  Idaho Falls Fanning Field-LHR London Heathrow
12h 00m1 stop Denver Intl
United Airlines Logo
3:00 pm - 1:37 pmLHR  London Heathrow-IDA Idaho Falls Fanning Field
29h 37m2 stops Toronto Pearson Intl Denver Intl
$1,011United Airlines
Tue, Dec 1 - Sun, Dec 6
United Airlines Logo
2:40 pm - 9:40 amIDA  Idaho Falls Fanning Field-LHR London Heathrow
12h 00m1 stop Denver Intl
United Airlines Logo
3:00 pm - 1:37 pmLHR  London Heathrow-IDA Idaho Falls Fanning Field
29h 37m2 stops Toronto Pearson Intl Denver Intl
$1,012United Airlines
Tue, Dec 1 - Sun, Dec 6
United Airlines Logo
4:10 pm - 7:40 amIDA  Idaho Falls Fanning Field-LHR London Heathrow
32h 30m2 stops Denver Intl Houston George Bush Intcntl
United Airlines Logo
11:10 am - 1:37 pmLHR  London Heathrow-IDA Idaho Falls Fanning Field
33h 27m2 stops Toronto Pearson Intl Denver Intl
$1,016United Airlines
Wed, Dec 23 - Wed, Dec 30
Delta Logo
6:53 pm - 10:40 amIDA  Idaho Falls Fanning Field-LHR London Heathrow
32h 47m2 stops Salt Lake City Seattle/Tacoma Intl
Delta Logo
3:35 pm - 12:28 pmLHR  London Heathrow-IDA Idaho Falls Fanning Field
27h 53m2 stops Miami Salt Lake City
$1,278Delta
Wed, Dec 23 - Tue, Dec 29
Delta Logo
1:09 pm - 10:40 amIDA  Idaho Falls Fanning Field-LHR London Heathrow
38h 31m2 stops Salt Lake City Seattle/Tacoma Intl
Delta Logo
3:35 pm - 12:28 pmLHR  London Heathrow-IDA Idaho Falls Fanning Field
27h 53m2 stops Miami Salt Lake City
$1,278Delta
Booking Insights

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

Round-trip flights from Idaho Falls to London Heathrow Airport typically range from $844 to $1,249. The lowest price found in the past 5 days was $1,011, on United Airlines.

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

Based on deals KAYAK users found in the last 12 months, Tuesday is the cheapest day of the week to fly from Idaho Falls to London Heathrow Airport. It’s 23% cheaper than the average day, while Thursday is the most expensive, with prices 29% higher.

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Key details for Idaho Falls to London Heathrow Airport flights

Low season

February

Cheapest flight

$555
Beat the crowds with an average 72% drop in travelers.
The most popular month to fly with an average 47% increase in travelers.
One-way flight from Idaho Falls to London Heathrow Airport

When to book flights from Idaho Falls to London

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

Your Idaho Falls to London Heathrow Airport flight questions, answered

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

  • What cabin classes can I book on flights from Idaho Falls to London Heathrow Airport?

    Two cabin classes are available on flights from Idaho Falls to London Heathrow Airport:

    • Economy Class
    • Premium Economy Class

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

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

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

    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 Idaho Falls to London Heathrow Airport flight?

    Round-trip flights from Idaho Falls to London Heathrow Airport range from $844 to $1,249, with an average of $964 over the past 12 months. Anything below $844 counts as a good deal.

  • Have flight prices from Idaho Falls to London Heathrow Airport 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 $905 to $5,820. That means the highest observed fare was about 6x higher than the lowest one.

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

    One-way fares from Idaho Falls to London Heathrow Airport are currently higher than usual. Average one-way flight prices are about $613, which is 46% above the typical average for this route.

  • What car rental options are available at London Heathrow Airport (LHR)?

    London Heathrow Airport (LHR) hosts 5 major car rental companies, with daily rates averaging $39 for economy cars. Top options include:

    • GREEN MOTION
    • DRIVALIA
    • Europcar
    • Alamo
    • Hertz

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

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

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

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

    • Denver Intl (DEN) - 50% of one-stop connections
    • Salt Lake City (SLC) - 36% of one-stop connections
    • Dallas/Fort Worth (DFW) - 11% of one-stop connections
    • Seattle/Tacoma Intl (SEA) - 3% of one-stop connections

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

    Yes. Flexible dates can save you up to 40% on flights from Idaho Falls to London Heathrow Airport. Tuesday is the cheapest departure day at $751 round-trip on average, while Thursday is the most expensive at $1,249, a difference of $498.

    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 Idaho Falls to London Heathrow Airport?

    Flying via Denver Intl (DEN) gives the shortest average 1-stop total travel time at 12h 43m, compared with 14h 03m via Salt Lake City (SLC) and 14h 58m via Seattle/Tacoma Intl (SEA).

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

    London Heathrow Airport is 7 hours ahead of Idaho Falls (British Time vs Mountain Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in London Heathrow Airport?

    Some of the most popular sights in London Heathrow Airport are Hyde Park and Buckingham Palace. These are among the most viewed places in London Heathrow Airport on KAYAK.

Your guide to booking Idaho Falls to London Heathrow Airport 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 Tuesday departure and avoid flying on Thursday. On this route, Tuesday flights average $751, about $498 less than Thursday fares (40% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Idaho Falls to London Heathrow Airport trip for March. Fares historically average $691 round-trip in that month - typically $692 less than the most expensive month, which is June (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to London Heathrow Airport.

    • Hilton London Heathrow Airport

More options for your flight from Idaho Falls to London

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

Car rentals in London
Hotels in London
Vacations in London