$490 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 5/30. 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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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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Best Idaho Flight Deals from Heathrow

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Boise
Boise2 stops$788
Idaho Falls
Idaho Falls2 stops$952
Spokane
Spokane2 stops$875
Boise
Boise2 stops$788
Idaho Falls
Idaho Falls2 stops$952
Spokane
Spokane2 stops$875

Cheap Flights from Heathrow to Idaho

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip 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.

Recent round-trip flight deals from Heathrow to Idaho

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Heathrow to Idaho.
Discover the best prices for you by selecting your travel dates on KAYAK.
Lufthansa Logo
5:40 pm - 1:35 pmLHR-BOI
26h 55m2 stops
Lufthansa Logo
10:45 am - 6:20 amBOI-LHR
36h 35m2 stops
$788Lufthansa
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Fri, Sep 26 - Mon, Oct 6
Lufthansa Logo
5:40 pm - 1:35 pmLHR-BOI
26h 55m2 stops
Lufthansa Logo
7:09 pm - 8:40 pmBOI-LHR
18h 31m2 stops
$790Lufthansa
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Fri, Sep 26 - Mon, Oct 6
Lufthansa Logo
4:15 pm - 11:44 pmLHR-BOI
14h 29m1 stop
Lufthansa Logo
2:13 pm - 11:10 amBOI-LHR
13h 57m1 stop
$791Lufthansa
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Fri, Sep 26 - Mon, Oct 6
British Airways Logo
4:30 pm - 10:20 pmLHR-BOI
12h 50m1 stop
British Airways Logo
7:30 am - 12:20 pmBOI-LHR
21h 50m1 stop
$824British Airways
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Fri, Oct 24 - Mon, Nov 3
United Airlines Logo
9:00 am - 5:59 pmLHR-BOI
39h 59m2 stops
United Airlines Logo
10:40 am - 7:25 amBOI-LHR
13h 45m1 stop
$857United Airlines
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Fri, Oct 24 - Mon, Nov 3
United Airlines Logo
9:00 am - 10:21 pmLHR-BOI
20h 21m2 stops
United Airlines Logo
7:00 am - 9:40 amBOI-LHR
19h 40m1 stop
$860United Airlines
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Fri, Oct 24 - Mon, Nov 3
Virgin Atlantic Logo
9:55 am - 9:07 pmLHR-GEG
19h 12m2 stops
Virgin Atlantic Logo
2:22 pm - 1:10 pmGEG-LHR
14h 48m1 stop
$875Virgin Atlantic
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Fri, Jun 13 - Fri, Jun 20
Virgin Atlantic Logo
6:00 pm - 10:55 pmLHR-GEG
12h 55m1 stop
Virgin Atlantic Logo
2:22 pm - 1:10 pmGEG-LHR
14h 48m1 stop
$894Virgin Atlantic
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Fri, Jun 13 - Fri, Jun 20
Logo
9:55 am - 10:52 pmLHR-BOI
19h 57m1 stop
Logo
5:51 pm - 5:15 pmBOI-LHR
16h 24m1 stop
$918
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Thu, May 22 - Mon, Jun 2
Logo
10:20 am - 10:42 pmLHR-BOI
19h 22m2 stops
Logo
5:39 pm - 1:40 pmBOI-LHR
13h 01m1 stop
$920
Find Deal
Thu, May 22 - Mon, Jun 2
Useful Info

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 $749 (return) on average. On the other hand, the most expensive months are August and July, when the average cost of round-trip tickets is $1,373 and $1,151 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 Thursday 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 Tuesdays and the most expensive ones on Fridays.

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 the flight from London Heathrow Airport to Idaho, you should book around 5 weeks before departure. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

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Good to know

Low seasonJanuary
High seasonSeptember
Cheapest flight$490
Best time to beat the crowds with an average 17% drop in price.
Most popular time to fly and prices are also 12% lower on average.
Flight from London to Boise

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 travelers 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 round-trip 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 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.

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

Information on your arrival and departure airports

London Heathrow Airport (LHR)

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