£367 Find Cheap Flights from London Heathrow Airport 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 Heathrow to Idaho departing on 15/1. 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, 0 bags

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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Cheap Flights from Heathrow to Idaho

Cheapest return prices found by our users on KAYAK in the last 72 hours
Boise
Boise1 stop£479
Hailey
Hailey1 stop£674
Boise
Boise1 stop£479
Hailey
Hailey1 stop£674

Book Cheap Heathrow to Idaho Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Heathrow 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 return flight deals from Heathrow to Idaho

Sat, 7 Feb - Sun, 15 Feb
United Airlines Logo
10:25 - 19:13
LHR
-
BOI
15h 48m1 stop
United Airlines Logo
08:05 - 05:55
BOI
-
LHR
14h 50m1 stop
£479United Airlines
Thu, 29 Jan - Thu, 5 Feb
Multiple Airlines Logo
12:15 - 23:59
LHR
-
BOI
18h 44m2 stops
Multiple Airlines Logo
11:35 - 19:30
BOI
-
LHR
24h 55m2 stops
£490Multiple Airlines
Thu, 15 Jan - Thu, 22 Jan
Multiple Airlines Logo
12:15 - 21:25
LHR
-
GEG
17h 10m2 stops
Multiple Airlines Logo
07:30 - 19:30
GEG
-
LHR
28h 00m2 stops
£501Multiple Airlines
Thu, 15 Jan - Thu, 22 Jan
Lufthansa Logo
10:05 - 19:16
LHR
-
GEG
17h 11m1 stop
Lufthansa Logo
12:24 - 12:00
GEG
-
LHR
15h 36m1 stop
£593Lufthansa
Mon, 4 May - Sun, 10 May
Iberia Logo
10:05 - 20:34
LHR
-
GEG
18h 29m1 stop
Iberia Logo
06:09 - 08:05
GEG
-
LHR
17h 56m1 stop
£604Iberia
Fri, 30 Jan - Fri, 6 Feb
Lufthansa Logo
06:35 - 19:16
LHR
-
GEG
20h 41m2 stops
Lufthansa Logo
12:24 - 12:00
GEG
-
LHR
15h 36m1 stop
£616Lufthansa
Thu, 29 Jan - Thu, 5 Feb
American Airlines Logo
12:35 - 12:46
LHR
-
SUN
31h 11m1 stop
American Airlines Logo
13:16 - 10:25
SUN
-
LHR
14h 09m1 stop
£772American Airlines
Fri, 30 Jan - Fri, 6 Feb
American Airlines Logo
12:35 - 12:46
LHR
-
SUN
31h 11m1 stop
American Airlines Logo
08:09 - 13:15
SUN
-
LHR
22h 06m1 stop
£802American Airlines
Wed, 28 Jan - Wed, 4 Feb
Virgin Atlantic Logo
10:45 - 19:06
LHR
-
JAC
15h 21m1 stop
Virgin Atlantic Logo
12:58 - 10:00
JAC
-
LHR
14h 02m1 stop
£828Virgin Atlantic
Fri, 30 Jan - Fri, 6 Feb
Virgin Atlantic Logo
20:25 - 16:24
LHR
-
JAC
26h 59m2 stops
Virgin Atlantic Logo
12:58 - 10:00
JAC
-
LHR
14h 02m1 stop
£874Virgin Atlantic
Booking Insights

KAYAK's insights & trends for Heathrow to Idaho flights

Get data-powered insights and trends into flights from Heathrow 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 Heathrow Airport to Idaho?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London Heathrow Airport 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 Heathrow Airport to Idaho is January, when tickets cost £565 (return) on average. On the other hand, the most expensive months are December and February, when the average cost of return tickets is £1,219 and £989 respectively.

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

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

When flying from London Heathrow Airport to Idaho, you should consider leaving on a Wednesday and avoid Sundays if you are looking for the best rates. For your return to London Heathrow Airport, you’ll find the best rates on Wednesdays and the most expensive ones on Thursdays.

How far in advance should I book a flight from London Heathrow Airport 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 Heathrow Airport 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 a flight from London Heathrow Airport to Idaho, you should book around 2 weeks before departure, which saves you about 38% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.

Good to know - Cheap tickets from London Heathrow Airport to Idaho

Low seasonJanuary
Cheapest flight£367
Best time to beat the crowds (25% less expensive on average)
Most popular time to fly (11% more expensive on average)
Flight from London Heathrow Airport to Spokane

FAQs - booking Idaho flights

  • How does KAYAK find such low prices on flights from London Heathrow Airport 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 Heathrow Airport to Idaho.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from London Heathrow Airport to Idaho is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from London Heathrow Airport to Idaho?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from London Heathrow Airport 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 Heathrow Airport 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 Heathrow Airport 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 retur flights cost £649 on average. Morning departures are around 21% cheaper than evening flights, on average. The most expensive time of day to fly to Idaho is generally at night, which is peak travel time and where the average cost of a ticket is £840.

Reviews of the top 3 airlines flying from Heathrow 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 Heathrow 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.
7.5
Virgin AtlanticOverall score based on 675 reviews
6.9Food
7.5Entertainment
7.7Boarding
7.3Comfort
8.2Crew
Airline reviews

Food has been disappointing in both legs of flight to india

10.0 ExcellentRanj, Nov 2025
DEL - LHR
Read more Virgin Atlantic reviews

Food has been disappointing in both legs of flight to india

Great staff great experience, made a 2 hour delay very bearable

Great staff, great experience, made a 2 hour delay very bearable

Food was the worst I’ve had on a VA flight. Normally it’s a lot better

I was my pleasure to fly virgin on my birthday for my first solo trip ever 🫶🏼

These are one of the older seat arrangements facing away from the windows! Not particularly convenient sets. No storage spaces. NO COAT HANGING HOOKS. Inconvenient business class seat compared to any other airlines of similar class. Staff are excellent! Extremely professional, friendly. Food is good too.

Overall, flight was excellent but check in was very slow for Premium Economy. Economy queue was shorter but we weren't allowed to use it.

The staff was not very polite but the flight was very very nice and comfortable and the entertainment was great

Great crew - old style upper class seats on the older fleet now feels dated

Premium economy more comfortable than economy, but not by much. Did was awful, do not try the omelette. Flight crew were helpful. Flight was delayed by over an hour. Overall but bad, arrived safely and thank God.

The flight was on time. I generally don’t drink or eat on short flights and the seats were good and the flight attendants were friendly. That’s all I expect

Movie selection is good. Crew did not understand mileage program and were no help. Sick later. Food?

Staff on board was excellent. Positive upbeat helpful- like it used to be.

It was nice to have gotten up upgraded to first class with a meal on a three hour flight

For an expensive flight to another country, United has a lot of nerve serving pretzels and no meals (unless, of course, you want to buy something to eat). Unacceptable.

The food is terrible. The same pasta or chicken with bad taste and presentation

United have really come back. Airport and boarding process is clear and good, app and information also very good

The Sears in the 800s are not too good perfect Airbus why cant the new 737 fix that

Flight was delayed 8 times. We were sitting at the airport for 14 hours. We got 2 hours of sleep (if that) on what was not meant to be a red-eye.

It was probably one of the worst flights I’ve been on. The restrooms were never cleaned or stocked. The food was very subpar, and i usually enjoy airline food, so I was disappointed. It was just all around a bad experience. The only saving grace was the flight attendants.

Booked seats (paid extra) online and found they didn’t exist on the flight. We were then separated from the rest of our party. Given seats in the very back of the plane. We will not fly Discover or Lufthansa again. We will not book flights or travel through Kayak again!

Had a few open seats and could use it for a great rest ful journey

It was very good. Service was friendly and efficient, and food was good.

Airline food is airline food, but the plane was wonderful and the seating comfort outstanding. One of my best flights in quite a while.

Crew was outstanding, helpful and friendly. Food is deteriorating. The snack at the end of the flight was not good, a greasy moosh of toast cheese snd other unidentifiable ingredients. Coming from Germany a pretzl with butter would have been better. Entertainment had a great selection.

Smooth flight with enough time for connection. Ran out of meal options. In-flight and gate staff were friendly and helpful. Good service overall.

Paid for exit row at the back of the plane. Window seat with lots of leg space. Food was inedible (as usual). Brought my own.

The seat space seemed small especially when the person ahead reclined but other than that, very good.

Luggage transfer in Chicago was not performed in time. I received my luggage at my destination two days later.

Give yourself over 2+ hours layover because if flight is slighlty delayed and you miss your connection, Lufthansa will do nothing for you

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

Information on your arrival and departure airports