IDA - LHR

$739 Find Cheap Flights from Idaho Falls to London - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$748
Typical prices: $744-$1,204
Delta
Fri 9/28Sat 10/13
IDA - LHR • 1 stop
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
April
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Denver Intl (DEN)
Cheapest • Avg $878 (round-trip)
Salt Lake City (SLC)
Shortest trip • 14h 07m (one-way)
Insights
Insights
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We hope you love your trip to London Heathrow Airport!
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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

Mon, Sep 28 - Tue, Oct 13
Delta Logo
6:57 pm - 11:00 amIDA  Idaho Falls Fanning Field-LHR London Heathrow
33h 03m1 stop Salt Lake City
Delta Logo
10:55 am - 6:16 pmLHR  London Heathrow-IDA Idaho Falls Fanning Field
14h 21m1 stop Salt Lake City
$748Delta
Mon, Sep 28 - Tue, Oct 13
Delta Logo
6:57 pm - 5:35 pmIDA  Idaho Falls Fanning Field-LHR London Heathrow
15h 38m2 stops Salt Lake City Los Angeles
Delta Logo
8:05 pm - 10:10 pmLHR  London Heathrow-IDA Idaho Falls Fanning Field
33h 05m2 stops New York John F Kennedy Intl Salt Lake City
$748Delta
Mon, Sep 28 - Tue, Oct 13
Delta Logo
6:57 pm - 5:35 pmIDA  Idaho Falls Fanning Field-LHR London Heathrow
15h 38m2 stops Salt Lake City Los Angeles
Delta Logo
10:55 am - 12:22 pmLHR  London Heathrow-IDA Idaho Falls Fanning Field
32h 27m1 stop Salt Lake City
$748Delta
Mon, Dec 7 - Wed, Dec 9
Alaska Airlines Logo
6:00 am - 12:20 pmIDA  Idaho Falls Fanning Field-LHR London Heathrow
23h 20m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
2:45 pm - 3:07 pmLHR  London Heathrow-IDA Idaho Falls Fanning Field
31h 22m1 stop Seattle/Tacoma Intl
$761Alaska Airlines
Wed, Oct 7 - Tue, Oct 13
Air France Logo
1:05 pm - 3:35 pmIDA  Idaho Falls Fanning Field-LHR London Heathrow
19h 30m2 stops Salt Lake City Seattle/Tacoma Intl
Air France Logo
10:55 am - 6:16 pmLHR  London Heathrow-IDA Idaho Falls Fanning Field
14h 21m1 stop Salt Lake City
$761Air France
Sun, Jan 10 - Mon, Jan 18
KLM Logo
6:00 am - 7:05 amIDA  Idaho Falls Fanning Field-LHR London Heathrow
18h 05m2 stops Salt Lake City Minneapolis St Paul
KLM Logo
8:25 pm - 6:14 pmLHR  London Heathrow-IDA Idaho Falls Fanning Field
28h 49m2 stops Amsterdam Schiphol Salt Lake City
$763KLM
Wed, Oct 7 - Tue, Oct 13
Alaska Airlines Logo
6:09 am - 3:05 pmIDA  Idaho Falls Fanning Field-LHR London Heathrow
25h 56m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
5:00 pm - 3:20 pmLHR  London Heathrow-IDA Idaho Falls Fanning Field
29h 20m1 stop Seattle/Tacoma Intl
$766Alaska Airlines
Wed, Oct 7 - Tue, Oct 13
Alaska Airlines Logo
6:09 am - 3:05 pmIDA  Idaho Falls Fanning Field-LHR London Heathrow
25h 56m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
5:00 pm - 3:20 pmLHR  London Heathrow-IDA Idaho Falls Fanning Field
29h 20m1 stop Seattle/Tacoma Intl
$767Alaska Airlines
Thu, Oct 29 - Thu, Nov 5
Delta Logo
6:00 am - 9:00 amIDA  Idaho Falls Fanning Field-LHR London Heathrow
21h 00m2 stops Salt Lake City Atlanta Hartsfield-Jackson
Delta Logo
6:20 am - 10:10 pmLHR  London Heathrow-IDA Idaho Falls Fanning Field
22h 50m2 stops Paris Charles de Gaulle Salt Lake City
$804Delta
Thu, Oct 29 - Thu, Nov 5
Delta Logo
6:00 am - 9:00 amIDA  Idaho Falls Fanning Field-LHR London Heathrow
21h 00m2 stops Salt Lake City Atlanta Hartsfield-Jackson
Delta Logo
10:45 am - 10:10 pmLHR  London Heathrow-IDA Idaho Falls Fanning Field
18h 25m1 stop Salt Lake City
$811Delta
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 from Idaho Falls to London Heathrow Airport 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 start at $748. Prices are typical for this route right now, with typical round-trip fares ranging from $744 to $1,204. The lowest price found in the past 5 days was $748 on Delta.

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Key details for Idaho Falls to London Heathrow Airport flights

Low season

February
Most popular time to fly and prices are also 21% lower on average.

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 route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • 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).

  • 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

  • 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) - 48% of one-stop connections
    • Salt Lake City (SLC) - 35% of one-stop connections
    • Dallas/Fort Worth (DFW) - 13% of one-stop connections
    • Seattle/Tacoma Intl (SEA) - 4% of one-stop connections

    Denver Intl (DEN) handles the largest share of one-stop connections on this route.

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

    Yes. Being flexible with your travel dates can save you up to 43% on the Idaho Falls to London Heathrow Airport route. Tuesday is the cheapest departure day at $751 round-trip on average, while Friday is the most expensive at $1,311, a difference of $560. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

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

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

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

    A nonstop flight from Idaho Falls to London Heathrow Airport takes 0h 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.

  • 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 $748 to $5,294. That means the highest observed fare was about 7x higher than the lowest one.

  • 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 58m, compared with 14h 07m 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 car rental options are available at London Heathrow Airport (LHR)?

    London Heathrow Airport (LHR) hosts 5 major car rental companies, with daily rates starting from around $7 for economy cars. Top options include:
    • GREEN MOTION
    • DRIVALIA
    • Europcar
    • Alamo
    • Hertz

  • 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 $744 to $1,204, with an average of $963 over the past 12 months. Anything below $744 counts as a good deal.

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 can be flexible, aim for a Tuesday departure instead of Friday. On this route, Tuesday flights average $751 - about $560 less than Friday (43% 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

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