$735 Find Cheap Flights from Idaho Falls to the United Kingdom

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 the United Kingdom departing on 7/27. 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.
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Cheap Flights from Idaho Falls to the United Kingdom

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Idaho Falls to the United Kingdom that are departing in the next months. 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 the United Kingdom

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Idaho Falls to the United Kingdom.
Discover the best prices for you by selecting your travel dates on KAYAK.
United Airlines Logo
2:38 pm - 9:40 amIDA-LHR
12h 02m1 stop
United Airlines Logo
9:30 am - 8:54 pmLHR-IDA
18h 24m2 stops
$735United Airlines
Find Deal
Sun, Jul 27 - Tue, Aug 19
United Airlines Logo
6:03 pm - 9:40 amIDA-LHR
32h 37m1 stop
United Airlines Logo
9:30 am - 10:48 pmLHR-IDA
20h 18m2 stops
$740United Airlines
Find Deal
Sat, Jul 26 - Wed, Aug 20
Delta Logo
11:20 am - 2:15 pmIDA-LHR
19h 55m2 stops
Delta Logo
11:15 am - 10:15 pmLHR-IDA
18h 00m2 stops
$752Delta
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Sun, Jul 27 - Tue, Aug 19
Delta Logo
3:04 pm - 2:15 pmIDA-LHR
16h 11m2 stops
Delta Logo
5:25 pm - 10:33 amLHR-IDA
24h 08m2 stops
$820Delta
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Mon, Jul 14 - Wed, Aug 20
KLM Logo
3:05 pm - 1:10 pmIDA-LHR
15h 05m2 stops
KLM Logo
12:25 pm - 10:15 pmLHR-IDA
16h 50m2 stops
$880KLM
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Sun, Jul 27 - Sun, Aug 17
 Logo
3:05 pm - 1:10 pmIDA-LHR
15h 05m2 stops
 Logo
6:15 am - 6:12 pmLHR-IDA
18h 57m2 stops
Sun, Jul 27 - Mon, Aug 18
Air France Logo
11:20 am - 9:50 amIDA-LHR
15h 30m1 stop
Air France Logo
6:15 am - 6:12 pmLHR-IDA
18h 57m2 stops
$984Air France
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Mon, Jul 14 - Mon, Aug 18
 Logo
3:05 pm - 1:10 pmIDA-LHR
15h 05m2 stops
 Logo
6:15 am - 6:12 pmLHR-IDA
18h 57m2 stops
Sun, Jul 13 - Mon, Aug 18
Air France Logo
11:20 am - 9:50 amIDA-LHR
15h 30m1 stop
Air France Logo
6:15 am - 6:12 pmLHR-IDA
18h 57m2 stops
$996Air France
Find Deal
Mon, Jul 28 - Mon, Aug 18
KLM Logo
2:55 pm - 1:10 pmIDA-LHR
15h 15m2 stops
KLM Logo
12:25 pm - 10:15 pmLHR-IDA
16h 50m2 stops
$1,007KLM
Find Deal
Sat, Jul 12 - Sun, Aug 17
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KAYAK's insights & trends for Idaho Falls to the United Kingdom flights

Get data-powered insights and trends into flights from Idaho Falls to the United Kingdom to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Idaho Falls to the United Kingdom?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Idaho Falls to the United Kingdom were found on United Airlines ($735) and Delta ($752).


Good to know

Low seasonOctober
High seasonJune
Cheapest flight$735
Best time to beat the crowds with an average 50% drop in price.
Most popular time to fly with an average 7% increase in price.
Flight from Idaho Falls to London

FAQs - booking United Kingdom flights

  • How does KAYAK find such low prices on flights from Idaho Falls to the United Kingdom?

    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 the United Kingdom.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Idaho Falls to the United Kingdom?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Idaho Falls to the United Kingdom 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 the United Kingdom?

    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 from Idaho Falls to the United Kingdom with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Idaho Falls to the United Kingdom?

    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 from Idaho Falls to the United Kingdom up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to the United Kingdom?

    The cheapest time of day to fly to the United Kingdom is generally in the evening, when round-trip flights cost $914 on average. Morning departures are around 60% more expensive than evening flights, on average. The most expensive time of day to fly to the United Kingdom is generally in the morning, which is peak travel time and where the average cost of a ticket is $1,424.

Top airlines flying from Idaho Falls to the United Kingdom

Need help choosing which airline to fly with from Idaho Falls to the United Kingdom? 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 7940 reviews
7.9Entertainment
7.3Food
8.2Boarding
8.5Crew
7.9Comfort
Airline reviews

Food from the flight from Atlanta to Santiago was very poor..

4.0 OkayAnonymous, May 2025FAI - SEA
Read more Delta reviews

Food from the flight from Atlanta to Santiago was very poor..

Flight was delayed due to weather. Crew did a nice job of making us comfortable. No complain complaints.

Our bag was lost so that made unnecessary chaos On our trip

Delta is my preferred airline. I've traveled with them for years. On time in most cases, good communication, easy to use app. Most planes are pretty nice. I was on a CRJ 700/900 however, which was pretty badly aged inside and needed a refresh. No infotainment, unreliable wifi, best to download before boarding or bring a book. Food choices are really just snacks on this flight, nice variety but about what you'd expect. Great staff and prompt in departure and early arrival too. Overall quite satisfied.

Crew was friendly Love the entertainment in the seat head rest.

Delta flight was on time, seats were comfortable, and crew was nice.

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

Delayed take-off. Very small plane so very scary with lots of bumps during the flight. Would never fly Delta on short flights in small 80 seaters plane again! Felt relieved when landed.

The worst part was I was NOT allowed in the lounge even though I was holding a first class ticket and have a premium American Express card. I have flown Business or First Class with many airlines. Delta is the ONLY one who does not extend this courtesy to anyone except people who hold the very expensive American Express card. As a result, I won’t fly Delta if I have any other choice.

It was an overnight flight and I desperately needed coffee before we landed, but Delta does only one beverage service, and that is shortly after takeoff, not before landing at 5 am.

Liked fold flat bed. Didn’t like having no window. Didn’t like poor choice of food and being served dinner very late, hours after take off of a 7:40pm flight. Servers not friendly. Food horrible in business class.

Everything is good except the dinner and breakfast. The sandwich is very delicious. Toilet is clean, I only use one of them. Flight attendants are very nice. 👍👍

A bit rush for transit. Food and entertainment are not available

Boarding was a little difficult. The gate area at O'Hare was very small and crowded due to multiple gates in the area. Could not hear the intercom, so had to rely on signage to see when my group was boarding and the signage was blocked by passengers standing in the gate. Flight was great and we arrived in Montreal on time.

Multiple delays and not straight answer from the United team

For economy, it was very good. Staff was great, they even let some of us change seats for more leg room... Put an empty seat between us which was fantastic for a 12hr flight. Onboard entertainment was excellent, I think over 200 choices of movies/tv/etc The bad was the barely/nonfunctional wifi that cost either $16.99 or 1700 miles (full flight). It was atrocious... Definitely the worst of the last 3 long haul major airlines I was on the last few months.

Stewardess spilled orange juice on my clothes/seat no help no apology just threw napkins at me to clean the mess up. Not Happy.

Smooth flight. Boarding was chaotic. Could not hear the gate agent over the intercom. People were lined up in the wrong lines. Groups one and two were told to board through line one and group 3 through line 2. All very confusing. Once in the air, the flight was smooth. There was no entertainment option on this aircraft, even though it was a larger aircraft.

The plane pushed back from the gate on time. However, it stopped on the ramp, and we waited for over 20 minutes before the aircraft pulled back to the gate. Apparently, something of importance had to be removed from the aircraft by the gate agent. I found this to be odd. The delay was not significant, but I felt that whatever was on the aircraft that had to be taken off, should’ve been done before we pushed back from the gate.

I didn’t get on plane. Passport being processed by consulate with visa application. Tried to cancel through underpricer after purchasing cacelling for any reason. No dice, they are thieves.

Everything you need to know for your flight from Idaho Falls to the United Kingdom

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