$341 Find Cheap Flights from London to Idaho

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from London to Idaho departing on 9/22. 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
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Idaho

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Idaho, 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 London to Idaho, as well as popular online travel agencies
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Flights Deals

Best Idaho Flight Deals from London

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Hailey
Hailey2 stops$1,397
Spokane
Spokane2 stops$644
Hailey
Hailey2 stops$1,397
Spokane
Spokane2 stops$644

Cheap Flights from London to Idaho

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from London to Idaho 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from London to Idaho

Tue, Sep 9 - Wed, Sep 17
Virgin Atlantic Logo
6:15 am - 6:45 pmLHR-GEG
20h 30m2 stops
Virgin Atlantic Logo
1:30 pm - 9:50 amGEG-LHR
12h 20m1 stop
$644Virgin Atlantic
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Fri, Sep 5 - Sat, Sep 20
Logo
10:55 am - 10:25 pmLGW-GEG
19h 30m1 stop
Logo
1:40 pm - 10:55 amGEG-LGW
37h 15m2 stops
$649
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Fri, Sep 26 - Mon, Oct 6
United Airlines Logo
7:25 am - 9:52 amLHR-BOI
33h 27m2 stops
United Airlines Logo
5:00 am - 9:35 amBOI-LHR
21h 35m2 stops
$785United Airlines
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Fri, Sep 26 - Mon, Oct 6
United Airlines Logo
7:25 am - 9:52 amLHR-BOI
33h 27m2 stops
United Airlines Logo
2:12 pm - 11:10 amBOI-LHR
13h 58m1 stop
$786United Airlines
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Fri, Sep 26 - Mon, Oct 6
Lufthansa Logo
10:35 am - 7:15 pmLHR-BOI
15h 40m1 stop
Lufthansa Logo
9:45 am - 7:25 amBOI-LHR
14h 40m1 stop
$799Lufthansa
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Fri, Sep 26 - Mon, Oct 6
Lufthansa Logo
10:35 am - 11:44 pmLHR-BOI
20h 09m1 stop
Lufthansa Logo
2:12 pm - 11:10 amBOI-LHR
13h 58m1 stop
$800Lufthansa
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Tue, Sep 9 - Wed, Sep 17
Icelandair Logo
1:00 pm - 11:59 pmLGW-GEG
18h 59m2 stops
Icelandair Logo
12:39 pm - 2:40 pmGEG-LGW
18h 01m2 stops
$877Icelandair
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Sat, Aug 30 - Sat, Sep 13
Icelandair Logo
3:40 pm - 10:40 pmLGW-BOI
38h 00m2 stops
Icelandair Logo
4:34 pm - 2:40 pmBOI-LGW
15h 06m2 stops
$900Icelandair
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Tue, Jul 1 - Wed, Jul 16
Delta Logo
6:30 am - 6:56 pmLHR-GEG
20h 26m2 stops
Delta Logo
1:15 pm - 1:30 pmGEG-LHR
16h 15m2 stops
$913Delta
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Tue, Jul 1 - Wed, Jul 16
Delta Logo
6:15 am - 4:40 pmLHR-GEG
18h 25m2 stops
Delta Logo
11:15 am - 2:15 pmGEG-LHR
19h 00m1 stop
$916Delta
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Useful Info

KAYAK's insights & trends for London to Idaho flights

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

What is the cheapest month to fly from London to Idaho?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London to Idaho, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from London to Idaho is November, when tickets cost $792 (return) on average. On the other hand, the most expensive months are August and July, when the average cost of round-trip tickets is $1,359 and $1,173 respectively.

What’s the cheapest day of the week to fly from London to Idaho?

The average price of all round-trip flights from London to Idaho clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Idaho on a Thursday, as we generally find the cheapest rates on that day for this route. On the other hand, Sunday is the most expensive day to fly from London to Idaho. For your return ticket, we recommend flying on a Tuesday and avoiding Fridays for the best deals.

How far in advance should I book a flight from London to Idaho?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from London to Idaho, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from London to Idaho, you should book around 5 weeks before departure. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

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Good to know

Low seasonJanuary
High seasonSeptember
Cheapest flight$341
Best time to beat the crowds with an average 8% drop in price.
Most popular time to fly and prices are also 10% lower on average.
Flight from London Gatwick Airport to Spokane

FAQs - booking Idaho flights

  • How does KAYAK find such low prices on flights from London to Idaho?

    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 London to Idaho.

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

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

    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 London to Idaho 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 London to Idaho?

    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 London to Idaho 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 Idaho?

    The cheapest time of day to fly to Idaho is generally in the afternoon, when round-trip flights cost $1,053 on average. The most expensive time of day to fly to Idaho is generally in the morning, which is peak travel time and where the average cost of a ticket is $1,056.

Top airline flying from London to Idaho

 
See real verified KAYAK customer reviews for airlines flying from London to Idaho. 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 London to Idaho? 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.
7.4
United AirlinesOverall score based on 8790 reviews
7.0Entertainment
7.7Boarding
7.3Comfort
6.6Food
8.1Crew
Airline reviews

it was so bad. I tried to board my flight from vancouver to saskatoon. And to my surprise they did not board me cause the flight was changed and no email was send to me. and on my boarding pass which i got from seattle says different flight. I did not knew anyone from Vancouver, air canada crew was rude, i asked for today flight but they were rude and i had early morning dental appointment in saskatoon. I was so much in pain and my whole day is wasted today. and i suffered alot. They did provide me hotel but they did not provide me any food. I am really really disappointed first time had so bad experience with air canada. I may think twice to book it again. If i can get any reply or any composition that would be great. Thanks

2.0 MediocreAnonymous, Jun 2025LAX - SEA
Read more United Airlines reviews

it was so bad. I tried to board my flight from vancouver to saskatoon. And to my surprise they did not board me cause the flight was changed and no email was send to me. and on my boarding pass which i got from seattle says different flight. I did not knew anyone from Vancouver, air canada crew was rude, i asked for today flight but they were rude and i had early morning dental appointment in saskatoon. I was so much in pain and my whole day is wasted today. and i suffered alot. They did provide me hotel but they did not provide me any food. I am really really disappointed first time had so bad experience with air canada. I may think twice to book it again. If i can get any reply or any composition that would be great. Thanks

It was fine, definitely older planes with no charging or anything. There’s no entertainment set up on board, but it is nice that they allow you to access the in flight entertainment from your phone without having to pay for the Wi-Fi and they do offer free texting.

Boarding was mayhem. Late boarding by 15 minutes because of lack of staff (missing 1 flight attendant. We had to wait for an arrival of another plane before we could board). Flight was a little rough, but cannot blame on airlines.

Impressed with the service despite turbulence because of the weather. Both flights arrived before their scheduled times.

Very comfortable (upgraded to business class). The audio on my screen didn’t work, but I managed to play the audio through my phone while watching the screen.

Great experience…left a bit behind schedule but made up fir that in the air and landed 10 minutes early 😁

I was supposed to be on business class at first class from Denver back to Miami due to weather changes. I missed my connection and it’s put on a flight to Fort Lauderdale. Instead of honoring my business class/1st class ticket, they put me in coach, but there were two first class seats open. I think it’s absolutely disgusting that I paid for first class $1300 ticket and they put me in economy and they had to open seats available and I have still not been refunded the difference. I ended up having to eat a snack box instead of the meal I was supposed to get and did not get home till 2 AM so I think that’s a little pathetic that I had to live off crackers for dinner And my poor dog ate some cheese and salami. Oh yes, apparently when they switched me to the new flight they forgot to mention I had a service dog

Excellent service despite turbulence during the flight. Flight attendants were remarkable!

Airbus plane, nice and polite staff, entertainment even as it was a short flight.

I liked that the flight was nonstop from ORD to CIU for $200 round trip.

Everything you need to know for your flight from London to Idaho

Cabin class types available on flights to Idaho

Cabin classes available on flights to Idaho. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.
First Class flights from London to Idaho
Business Class flights from London to Idaho
Prem Econ Class flights from London to Idaho
Economy Class flights from London to Idaho

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