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.

$334 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 2 - Wed, Nov 4

6:15 am - 11:15 am

BOI

LHR

22h 00m

1 stop

6:50 am - 11:06 pm

LHR

BOI

23h 16m

2 stops

$746United Airlines

Mon, Jan 11 - Wed, Jan 13

11:30 am - 12:00 pm

GEG

LHR

16h 30m

1 stop

6:35 am - 9:09 pm

LHR

GEG

22h 34m

2 stops

$758United Airlines

Tue, Oct 27 - Tue, Nov 10

2:40 pm - 3:50 pm

JAC

LHR

19h 10m

2 stops

7:40 am - 9:02 pm

LHR

JAC

20h 22m

2 stops

$869Lufthansa

Wed, Nov 18 - Wed, Dec 9

12:50 pm - 9:00 pm

GEG

LHR

24h 10m

2 stops

7:40 am - 9:09 pm

LHR

GEG

21h 29m

2 stops

$869Lufthansa

Sat, Oct 24 - Fri, Oct 30

1:40 pm - 7:30 am

GEG

LHR

33h 50m

2 stops

7:40 am - 9:05 pm

LHR

GEG

20h 25m

2 stops

$872Multiple Airlines

Wed, Nov 18 - Wed, Dec 9

6:02 am - 12:20 pm

GEG

LHR

22h 18m

1 stop

2:45 pm - 9:11 pm

LHR

GEG

14h 26m

1 stop

$878Alaska Airlines

Sat, Oct 24 - Fri, Oct 30

7:43 pm - 12:20 pm

GEG

LHR

33h 37m

1 stop

2:45 pm - 11:54 pm

LHR

GEG

16h 09m

1 stop

$880Alaska 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

$897Multiple Airlines

Wed, Sep 30 - Wed, Oct 14

7:02 am - 10:40 am

BOI

LGW

20h 38m

2 stops

2:30 pm - 11:25 am

LGW

BOI

27h 55m

2 stops

$900American Airlines

Wed, Sep 2 - Fri, Sep 11

6:44 am - 8:35 am

BOI

LGW

18h 51m

2 stops

2:30 pm - 1:00 pm

LGW

BOI

29h 30m

2 stops

$931American Airlines

Useful Info

Low season	January
High season	March
Cheapest flight	$334

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

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Return flight deals

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

$334 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

Low season

High season

Cheapest flight

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

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Flights to other popular destinations

Flights from domestic origins to London

Choose which airport to fly into in London

Find deals for your return flight