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

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

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

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Idaho 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 up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

$309 CHEAP FLIGHTS from Idaho to London

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Flight Deals

Cheap Flights from Idaho to London

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Recent round-trip flight deals from Idaho to London

Mon, Nov 30 - Thu, Dec 3

5:40 pm - 9:40 am

IDA

LHR

33h 00m

1 stop

6:35 am - 9:28 am

LHR

IDA

33h 53m

2 stops

$827United Airlines

Mon, Nov 30 - Thu, Dec 3

5:40 pm - 9:40 am

IDA

LHR

33h 00m

1 stop

9:30 am - 9:08 pm

LHR

IDA

42h 38m

2 stops

$832United Airlines

Wed, Oct 7 - Tue, Oct 13

1:46 pm - 1:45 pm

IDA

LHR

16h 59m

1 stop

8:15 am - 9:42 pm

LHR

IDA

20h 27m

2 stops

$868Multiple Airlines

Tue, Sep 8 - Thu, Sep 17

10:34 am - 4:00 pm

BOI

LHR

22h 26m

2 stops

6:40 pm - 6:39 pm

LHR

BOI

30h 59m

2 stops

$872Scandinavian Airlines

Wed, Nov 18 - Wed, Nov 25

5:25 am - 10:00 am

GEG

LHR

20h 35m

1 stop

7:35 am - 8:55 pm

LHR

GEG

21h 20m

2 stops

$872Iberia

Tue, Aug 25 - Sat, Sep 12

8:03 am - 4:00 pm

BOI

LHR

24h 57m

2 stops

6:40 am - 8:24 pm

LHR

BOI

20h 44m

2 stops

$873Multiple Airlines

Wed, Oct 14 - Wed, Oct 28

4:24 pm - 5:35 pm

GEG

LHR

17h 11m

1 stop

6:30 am - 11:42 pm

LHR

GEG

24h 12m

2 stops

$875Delta

Tue, Oct 13 - Tue, Oct 27

5:38 pm - 3:35 pm

GEG

LHR

13h 57m

1 stop

6:20 am - 4:58 pm

LHR

GEG

17h 38m

2 stops

$883Delta

Sat, Sep 26 - Sat, Oct 3

12:14 pm - 4:00 pm

BOI

LHR

20h 46m

2 stops

2:20 pm - 6:39 pm

LHR

BOI

35h 19m

2 stops

$896Scandinavian Airlines

Wed, Nov 18 - Wed, Nov 25

5:25 am - 2:05 pm

GEG

LCY

24h 40m

2 stops

7:50 am - 8:55 pm

LCY

GEG

21h 05m

2 stops

$982Iberia

Useful Info

Low season	January
High season	March
Cheapest flight	$309

Best time to beat the crowds but there is an average 99% increase in price.

Most popular time to fly and prices are also 29% lower on average.

Flight from Boise to London Heathrow Airport

How does KAYAK find such low prices on flights from Idaho 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 to London.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Idaho to London?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from 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 Idaho 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 with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Idaho 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 up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight to London

Cabin class

Complete your trip

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Cabin class types available on flights to Idaho

First Class flights to London

Business Class flights to London

Premium Economy Class flights to London

Economy Class flights to London

$309 Find Cheap Flights from Idaho to London - Compare and Save

Cheap Flights from Idaho to London

Recent round-trip flight deals from Idaho to London

Recent one-way flight deals from Idaho to London

Recent last minute flight deals from Idaho to London

Good to know

FAQs for booking flights from Idaho to London

Everything you need to know for your flight to London

Cabin class types available on flights to Idaho

Complete your trip to London with a hotel stay or car rental

Find direct flights for London

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Flights from domestic origins to London

Choose which airport to fly into in London

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