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Flights from London to Idaho Falls

Cheapest airlines flights from London to Idaho Falls

You can choose from 1 airlines that fly from London to Idaho Falls, including Delta Air Lines, American Airlines has lowest fares on this route.
Delta Air Lines logo Delta Air Lines
Airlines are determined based on actual purchased flight tickets from London to Idaho Falls according to previous 12 months data from Trip.com.

Search cheap flights from London to Idaho Falls in the next 3 months. Based on Trip.com's latest 7-day data, one-way fares start at US$670, and round-trip tickets start at US$805.

      • LHR 14:30
        16h 6m
        1 stop
        IDA 23:36
        London - Idaho Falls | Thu, Feb 19 | Air France
        IDA 08:00
        19h 30m
        1 stop
        LHR 10:30
        Idaho Falls - London | Tue, Feb 24 | Hawaiian Airlines
        US$805 US$1,045
        23% off
        23% off
        US$1,045 US$805
      • LHR 14:55
        15h 41m
        1 stop
        IDA 23:36
        London - Idaho Falls | Thu, Feb 19 | British Airways
        IDA 08:00
        16h
        1 stop
        LHR 07:00
        Idaho Falls - London | Tue, Feb 24 | Hawaiian Airlines
        US$815 US$1,045
        22% off
        22% off
        US$1,045 US$815
      • LHR 16:10
        27h 38m
        1 stop
        IDA 13:48
        London - Idaho Falls | Tue, Mar 10 | American Airlines
        IDA 14:18
        13h 42m
        1 stop
        LHR 10:00
        Idaho Falls - London | Tue, Mar 17 | American Airlines
        US$832 US$1,045
        20% off
        20% off
        US$1,045 US$832
      • LHR 10:45
        13h 30m
        1 stop
        IDA 18:15
        London - Idaho Falls | Wed, Mar 18 | Virgin Atlantic
        IDA 13:11
        14h 49m
        1 stop
        LHR 10:00
        Idaho Falls - London | Mon, Mar 23 | Delta Air Lines
        US$848
        19% off
        US$1,045 US$848
      • LHR 16:30
        28h 18m
        1 stop
        IDA 13:48
        London - Idaho Falls | Wed, Feb 18 | American Airlines
        IDA 14:18
        33h 32m
        1 stop
        LHR 06:50
        Idaho Falls - London | Sun, Feb 22 | American Airlines
        US$849
        19% off
        US$1,045 US$849
      • LHR 10:45
        17h 31m
        1 stop
        IDA 22:16
        London - Idaho Falls | Tue, Mar 10 | Virgin Atlantic
        IDA 05:43
        22h 17m
        1 stop
        LHR 10:00
        Idaho Falls - London | Tue, Mar 17 | Delta Air Lines
        US$854
        18% off
        US$1,045 US$854
      • LHR 15:05
        15h 31m
        1 stop
        IDA 23:36
        London - Idaho Falls | Sat, Feb 21 | Virgin Atlantic
        IDA 08:00
        19h 30m
        1 stop
        LHR 10:30
        Idaho Falls - London | Fri, Feb 27 | Hawaiian Airlines
        US$856
        18% off
        US$1,045 US$856
      • LHR 10:45
        13h 30m
        1 stop
        IDA 18:15
        London - Idaho Falls | Tue, Mar 10 | Delta Air Lines
        IDA 13:10
        14h 50m
        1 stop
        LHR 10:00
        Idaho Falls - London | Tue, Mar 17 | Delta Air Lines
        US$866
        17% off
        US$1,045 US$866
      • LHR 10:45
        18h 36m
        1 stop
        IDA 22:21
        London - Idaho Falls | Thu, Feb 19 | Virgin Atlantic
        IDA 13:10
        13h 50m
        1 stop
        LHR 10:00
        Idaho Falls - London | Wed, Feb 25 | Delta Air Lines
        US$885
        15% off
        US$1,045 US$885
      • LHR 16:30
        28h
        1 stop
        IDA 13:30
        London - Idaho Falls | Tue, Mar 3 | Finnair
        IDA 14:18
        13h 42m
        1 stop
        LHR 10:00
        Idaho Falls - London | Tue, Mar 10 | American Airlines
        US$888
        15% off
        US$1,045 US$888
      • LON 13:00
        17h 25m
        1 stop
        IDA Invalid Date
        London - Idaho Falls | Thu, Feb 19 | Normal Airline
        IDA 15:00
        6h
        Nonstop
        LON 16:00
        Idaho Falls - London | Sat, Feb 21 | Normal Airline
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      • LHR 14:55
        14h 41m
        1 stop
        IDA 23:36
        London - Idaho Falls | Tue, Mar 17 | American Airlines
        US$670 US$1,472
        54% off
        54% off
        US$1,472 US$670
      • LHR 14:55
        14h 41m
        1 stop
        IDA 23:36
        London - Idaho Falls | Tue, Mar 17 | Finnair
        US$672 US$1,472
        54% off
        54% off
        US$1,472 US$672
      • LHR 14:45
        29h 3m
        1 stop
        IDA 13:48
        London - Idaho Falls | Tue, Mar 17 | Iberia
        US$732 US$1,472
        50% off
        50% off
        US$1,472 US$732
      • LHR 11:35
        28h 21m
        1 stop
        IDA 09:56
        London - Idaho Falls | Tue, Mar 17 | Austrian Airlines
        US$859
        42% off
        US$1,472 US$859
      • LHR 10:45
        18h 36m
        1 stop
        IDA 22:21
        London - Idaho Falls | Fri, Feb 20 | Virgin Atlantic
        US$1,212
        18% off
        US$1,472 US$1,212
      • LHR 12:10
        32h 38m
        1 stop
        IDA 13:48
        London - Idaho Falls | Fri, Feb 20 | American Airlines
        US$1,225
        17% off
        US$1,472 US$1,225
      • LHR 14:25
        15h 59m
        1 stop
        IDA 23:24
        London - Idaho Falls | Fri, Feb 20 | Finnair
        US$1,233
        16% off
        US$1,472 US$1,233
      • LHR 14:45
        30h 3m
        1 stop
        IDA 13:48
        London - Idaho Falls | Fri, Feb 20 | British Airways
        US$1,235
        16% off
        US$1,472 US$1,235
      • LHR 10:45
        18h 36m
        1 stop
        IDA 22:21
        London - Idaho Falls | Fri, Feb 20 | Delta Air Lines
        US$1,242
        16% off
        US$1,472 US$1,242
      • LHR 11:35
        29h 13m
        1 stop
        IDA 09:48
        London - Idaho Falls | Fri, Feb 20 | Austrian Airlines
        US$1,251
        15% off
        US$1,472 US$1,251
      • LON 13:00
        17h 25m
        1 stop
        IDA Invalid Date
        London - Idaho Falls | Thu, Feb 19 | Normal Airline
        Find more flights
        Find more flights

Displayed flight fares from London to Idaho Falls are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

London to Idaho Falls Flight Details

The distance between London and Idaho Falls is about 7,591.92 km. Based on Trip.com's latest data, travel demand is highest in July. The off-season for travel is September.

Cheapest one-way flight priceUS$670
Cheapest return ticket priceUS$805
Cheapest monthSeptember
Peak season for travelJuly
Flight distance7,591.92 km
Popular airlineDelta Air Lines
Flight statistics for the London–Idaho Falls route are based on aggregated booking data from Trip.com over the past 12 months.

Frequently Asked Questions

  • What are the cheapest flights from London to Idaho Falls (LON-IDA)?

    Based on Trip.com data, American Airlines offers one-way fares as low as US$670 on Cheapest nonstop routes (e.g. LHR to IDA on Tue, Mar 17), while Air France offers Cheapest nonstop round-trips from US$805 departing on Thu, Feb 19 and returning on Tue, Feb 24.
  • At the moment, you can catch a nonstop flight from London to Idaho Falls with the following airlines, including: Delta Air Lines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from London to Idaho Falls is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • To find best deals on flights from London to Idaho Falls, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Tue, Mar 17, with one-way flights priced at just US$670.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is American Airlines.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for Idaho Falls travel is around July.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from London to Idaho Falls is September, when demand for travel is lower.
  • After crunching the numbers on our February flight calendar, it's currently cheapest to fly from London to Idaho Falls on February 19, 2026 with Air France, with prices starting at US$805.
  • You can land at any one of the following hubs in Idaho Falls, with London Gatwick Airport to Idaho Falls Regional Airport (LGW-IDA) is by far the most common option on this route: Idaho Falls Regional Airport (IDA).
  • The time difference between Idaho Falls and London is 7h.
  • Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

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