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IDA - LHR

$720 Find cheap flights from Idaho Falls to London

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Idaho Falls to London departing on 9/24. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Sat 6/22
Sat 6/29

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These are the airlines KAYAK users have selected most often from within our search results in flight searches from Idaho Falls to London, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Idaho Falls to London, as well as popular online travel agencies
In the last 7 days travelers have searched 43,800,826 times on KAYAK, and here is why:

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Cheap flight deals from Idaho Falls to London (IDA-LHR)

 
These are the cheapest deals for flights from Idaho Falls to London currently on KAYAK along with options from the most popular airlines KAYAK users selected for this route. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from Idaho Falls to London

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Idaho Falls to London.

Recent one-way flight deals from Idaho Falls to London

Only flying one-way? Below are some of the best one-way flight deals from Idaho Falls to London found on KAYAK recently.

Recent last minute flight deals from Idaho Falls to London

Leaving soon but still want a bargain? Check out these latest deals for last minute flights from Idaho Falls to London.

Recent direct flight deals from Idaho Falls to London

The latest deals for direct flights from Idaho Falls to London so you can sit back and relax without the need for a layover.

Cheap bus & train deals from Idaho Falls to London

Find recent round-trip train or bus tickets from Idaho Falls to London.

All round-trip flight deals to London

The cheapest plane tickets to London found on KAYAK recently.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
7:34 am - 2:25 pmIDA-LHR
23h 51m1 stop
8:20 am - 9:05 pmLHR-IDA
19h 45m2 stops
$720American Airlines
Find Deal
Tue, Sep 24 - Tue, Oct 1
7:34 am - 7:50 amIDA-LHR
17h 16m2 stops
7:40 am - 9:05 pmLHR-IDA
20h 25m2 stops
$725American Airlines
Find Deal
Tue, Sep 24 - Tue, Oct 1
2:35 pm - 9:40 amIDA-LHR
12h 05m1 stop
7:40 am - 8:53 pmLHR-IDA
19h 13m2 stops
$738United Airlines
Find Deal
Tue, Oct 1 - Thu, Oct 31
10:55 am - 10:40 amIDA-LHR
16h 45m2 stops
7:40 am - 8:53 pmLHR-IDA
19h 13m2 stops
$742United Airlines
Find Deal
Tue, Oct 1 - Thu, Oct 31
1:43 pm - 10:50 amIDA-LHR
14h 07m1 stop
1:05 pm - 9:05 pmLHR-IDA
15h 00m1 stop
Tue, Sep 24 - Tue, Oct 1
1:43 pm - 10:40 amIDA-LHR
13h 57m1 stop
1:10 pm - 9:05 pmLHR-IDA
14h 55m1 stop
Thu, Sep 19 - Sat, Sep 28
7:34 am - 6:50 amIDA-LHR
16h 16m2 stops
9:15 am - 9:05 pmLHR-IDA
18h 50m2 stops
$854American Airlines
Find Deal
Thu, Sep 19 - Sat, Sep 28
1:36 pm - 10:45 amIDA-LHR
14h 09m1 stop
1:10 pm - 10:04 pmLHR-IDA
15h 54m1 stop
Sat, Aug 3 - Sat, Aug 17
6:30 am - 6:50 amIDA-LHR
17h 20m2 stops
11:50 am - 10:04 pmLHR-IDA
17h 14m2 stops
$950American Airlines
Find Deal
Sat, Aug 3 - Sat, Aug 17
10:45 am - 12:20 pmIDA-LHR
18h 35m1 stop
7:25 am - 5:15 pmLHR-IDA
16h 50m2 stops
$837United Airlines
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Mon, May 27 - Wed, Jun 5
1:31 pm - 10:00 amIDA-LHR
13h 29m1 stop
6:15 am - 6:17 pmLHR-IDA
19h 02m2 stops
$838Delta
Find Deal
Tue, May 28 - Wed, Jun 5
7:10 am - 7:15 amIDA-LHR
17h 05m2 stops
7:25 am - 5:15 pmLHR-IDA
16h 50m2 stops
$841United Airlines
Find Deal
Mon, May 27 - Wed, Jun 5
6:00 am - 10:15 amIDA-LHR
21h 15m2 stops
6:15 am - 6:17 pmLHR-IDA
19h 02m2 stops
$843Delta
Find Deal
Mon, May 27 - Wed, Jun 5
1:31 pm - 10:00 amIDA-LHR
13h 29m1 stop
11:00 am - 6:17 pmLHR-IDA
14h 17m1 stop
$845KLM
Find Deal
Tue, May 28 - Wed, Jun 5
7:10 am - 12:20 pmIDA-LHR
22h 10m1 stop
11:05 am - 9:08 pmLHR-IDA
17h 03m1 stop
$850United Airlines
Find Deal
Mon, May 27 - Wed, Jun 5
7:10 am - 7:40 amIDA-LHR
17h 30m2 stops
8:30 am - 9:08 pmLHR-IDA
19h 38m2 stops
$855United Airlines
Find Deal
Tue, May 28 - Wed, Jun 5

Good to know

Cheapest flight

$720
Flight from Idaho Falls to London

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
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

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 $720 for a round-trip ticket.

  • 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.

  • Which airline alliances offer flights from Idaho Falls to London?

    oneworld, and Star Alliance are the airline alliances operating flights between Idaho Falls and London, with oneworld being the most commonly used for this 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?

    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.

  • 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.

See more FAQs

Top airlines flying from Idaho Falls to London

 
See real verified KAYAK customer reviews for airlines flying from Idaho Falls to London. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Idaho Falls to London? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 10561 reviews
8.0Entertainment
7.9Comfort
8.6Crew
7.4Food
8.2Boarding
Airline reviews

Paid premium for Delta only to be on safe but tired old 767 with ancient cabin in mediocre condition. Poor wifi and horrible inflight entertainment. Hardly a premium experience. Should have flown SW and had fun flight crew and no pretense

6.0 GoodPeter, May 2024SLC - HNL
Read more about Delta reviews

Paid premium for Delta only to be on safe but tired old 767 with ancient cabin in mediocre condition. Poor wifi and horrible inflight entertainment. Hardly a premium experience. Should have flown SW and had fun flight crew and no pretense

Our flight to Zurich was delayed by almost 3 hours, so we missed our next flight. There was no indication it would be delayed this much. We were told the gate had changed and then it apparently took over 2 hours to load the "catering" on the plane. We were not compensated in any way for the trouble.

Rated entertainment as Mediocre as there were major problems with the Infotainment system that took probably a half hour for them to fix.

Your crew could maybe answer the call bell at least one of the times I pressed it. I pressed it first time with 2.5 hours left in our flight bc my partner was hungry and wanted a sandwich. We finally got the sandwich with 40 mins left in the flight.

Half the bathrooms assigned to economy were out of action

Delta crushed it. Flight attendant in first was attentive and just never stopped. Honestly one of the best domestic flights I’ve been on.

They were an hour late and they didn’t have my wheelchair for me

The Flight crew didn’t serve us until about 1.5 hours into the flight because of turbulence but after it ended it was fine to move around. They served us water only and snacks and then NEVER, NOT ONE TIME came through to collect trash until right before landing about 1.5 hours later. There was absolutely no need for that. They crew was just standing around talking and visiting with each other and really never tried to see if we might want something besides water or even try to come pick up trash. This is VERY unusual for a Delta flight but it was not what I would have expected for a 4 hour flight.

The 1st class male crew member was very pleasant - the short female with round glasses , maybe in 50’s had no personality- never spoke when delivering my food, drink, & never smiled the whole trip! In fact looked annoyed when the boarding proses was happening- I would never hire this woman - unfriendly . Have never dealt with a crew member like her-

5-hour delay due to storms in Tanoa and airspace restricted by Miami traffic controllers.

Fantastic. Smooth boarding with an infant. Never experienced it with any other carriers.

This was a flight operated by Lufthansa. See me prior comments, which were meant for this experience. The CSA, Ashley, should be reprimanded if not fired for incompetence, being rude, and very, very slow. She was whispering to other CSAs, blaming my flight change on others, unable to give me a seat assignment, telling me could not help without offering any advice (I travel 200,000 miles a year and am a consultant to the airlines, so I know how this gets done PRETTY DAMN WELL). Then, she gave me literally the worst seat on the airline (yes, there were other seats open) - the one right next to the bathroom that was so bad the other PAX next to me left to move to another seat. My seat kept getting rammed (3x) by the crew with their carts (no turbulence to speak of), other passengers grabbing the seat to get in or out of the bathroom, and listening to the bathroom flush all night.

This was a Lufthansa flight, not United. The CSA at the counter, Ashley, was not only incompetent, but quite rude. Me and two other PAX waited over 7 minutes standing in front of her and another CSA and they ignored us. We joked that we must have accidently taken invisibility pills. She could have at least said "I'll be with you in a moment, I'm currently....". I could go on about how rude she and the other CSAs were (whispering, not communicating with me, blaming the situation on others, etc.). She would not work for me. Then, she gave me literally the worst seat on the plane. the worst. My seat kept getting bumped (rammed twice by the crew with their carts and about every 5 minutes by someone using the bathroom), listening to the bathroom all night, crowded seat, etc.

My seat was broken. WiFi didn’t work. Gate crew at HOU were rude and condescending. Treated all the passengers badly. Bad experience, United.

First flight of the day… MINIMUM FUEL! 15 minute landing delay at HOU due to fog turned into a 2+ hour delay! Rather than circle, they had to divert to another city to refuel! Sat on tarmac at Austin to refuel. We ALL missed our connections! The crew, including pilots, were clueless. Crew was really a mess. At HOU, Untied employees were exceedingly rude to all. It was pitiful.

Food wasn’t very good, old business seating configuration on an old A340

An hour and a half late is UNACCEPTABLE. The negative impact to our family is unconscionable. And for the price we were forced to pay...

Standard flight experience, but there is only power at the seat to row 20 on the aircraft, on my initial check in it did not say that was the case

Not a fan of the diagonal partially enclosed business class seats or how they have to be converted to beds manually by crew. I prefer more isolation and user control for switching to lie flat.

No lounge access with “United First” ticket. False alarm about late flight, jeopardizing connection. Wrong meal. Loose power socket would not hold plug, could not charge device. In-flight access to text messaging did not work. Toilet seat on plane would not stay up.

Last minute flights from Idaho Falls to London

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Idaho Falls to London that are departing in the next 10 days.
5/27Mon
multi-stopUnited Airlines
18h 35mIDA-LHR
6/5Wed
multi-stopUnited Airlines
16h 50mLHR-IDA
$837
5/28Tue
multi-stopDelta
13h 29mIDA-LHR
6/5Wed
multi-stopDelta
19h 02mLHR-IDA
$838
5/27Mon
multi-stopUnited Airlines
17h 05mIDA-LHR
6/5Wed
multi-stopUnited Airlines
16h 50mLHR-IDA
$841
5/27Mon
multi-stopDelta
21h 15mIDA-LHR
6/5Wed
multi-stopDelta
19h 02mLHR-IDA
$843
5/28Tue
multi-stopKLM
13h 29mIDA-LHR
6/5Wed
multi-stopKLM
14h 17mLHR-IDA
$845
5/27Mon
multi-stopUnited Airlines
22h 10mIDA-LHR
6/5Wed
multi-stopUnited Airlines
17h 03mLHR-IDA
$850
5/28Tue
multi-stopUnited Airlines
17h 30mIDA-LHR
6/5Wed
multi-stopUnited Airlines
19h 38mLHR-IDA
$855

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Idaho Falls - London Flights

Departure:

Idaho Falls (IDA)United States

Destination:

London (LHR)United Kingdom

Return flight deals:

London - Idaho Falls

Cabin classes: