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$357 Find cheap flights from Idaho to London

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to London departing on 10/21. 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
0 bags
Fri 6/21
Fri 6/28

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In the last 7 days travelers have searched 43,423,329 times on KAYAK, and here is why:

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Good to know

Low season

February

High season

May

Cheapest flight

$357
Best time to beat the crowds with an average 25% drop in price.
Most popular time to fly with an average 36% increase in price.
Flight from Idaho Falls to London

FAQs for booking flights from Idaho to London

  • 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.

See more FAQs

Prefer to fly non-stop from Idaho to London?

Find which airlines fly direct from Idaho to London, which days they fly and book direct flights.

Nonstop departures

Idaho to London

Monday

ANA, AccesRail, Aegean Airlines, +121 more

ANA, AccesRail, +122 more

Tuesday

ANA, AccesRail, Aegean Airlines, +122 more

ANA, AccesRail, +123 more

Wednesday

ANA, AccesRail, Aegean Airlines, +122 more

ANA, AccesRail, +123 more

Thursday

ANA, AccesRail, Aegean Airlines, +119 more

ANA, AccesRail, +120 more

Friday

ANA, AccesRail, Aegean Airlines, +125 more

ANA, AccesRail, +126 more

Saturday

ANA, AccesRail, Aegean Airlines, +119 more

ANA, AccesRail, +120 more

Sunday

ANA, AccesRail, Aegean Airlines, +125 more

ANA, AccesRail, +126 more

See more direct flights

Nonstop returns

London to Idaho

Monday

ANA, AccesRail, Aegean Airlines, +121 more

ANA, AccesRail, +122 more

Tuesday

ANA, AccesRail, Aegean Airlines, +122 more

ANA, AccesRail, +123 more

Wednesday

ANA, AccesRail, Aegean Airlines, +122 more

ANA, AccesRail, +123 more

Thursday

ANA, AccesRail, Aegean Airlines, +119 more

ANA, AccesRail, +120 more

Friday

ANA, AccesRail, Aegean Airlines, +125 more

ANA, AccesRail, +126 more

Saturday

ANA, AccesRail, Aegean Airlines, +119 more

ANA, AccesRail, +120 more

Sunday

ANA, AccesRail, Aegean Airlines, +125 more

ANA, AccesRail, +126 more

See more direct flights
See more direct flights

Book cheap flights from Idaho to London

Recent round-trip flight deals

9/24Tue
1 stopAmerican Airlines
17h 02mBOI-LHR
10/1Tue
2 stopsAmerican Airlines
19h 56mLHR-BOI
$720
9/24Tue
2 stopsAmerican Airlines
15h 31mBOI-LHR
10/1Tue
2 stopsAmerican Airlines
19h 56mLHR-BOI
$723
10/8Tue
1 stopUnited Airlines
14h 50mJAC-LHR
10/17Thu
2 stopsUnited Airlines
32h 28mLHR-JAC
$734
10/1Tue
1 stopUnited Airlines
18h 25mIDA-LHR
10/31Thu
2 stopsUnited Airlines
28h 18mLHR-IDA
$737
9/25Wed
1 stopDelta
19h 20mBOI-LHR
10/10Thu
2 stopsDelta
17h 01mLHR-BOI
$744
8/17Sat
1 stopFinnair
16h 15mBOI-LHR
8/30Fri
1 stopFinnair
15h 26mLHR-BOI
$748
9/25Wed
2 stopsDelta
17h 00mBOI-LHR
10/10Thu
2 stopsDelta
17h 01mLHR-BOI
$749
10/1Tue
1 stopKLM
13h 55mIDA-LHR
10/31Thu
1 stopKLM
17h 16mLHR-IDA
$751
9/2Mon
1 stopKLM
14h 46mBOI-LHR
10/1Tue
1 stopKLM
12h 48mLHR-BOI
$773
6/7Fri
1 stopFinnair
13h 14mBOI-LHR
6/20Thu
1 stopFinnair
17h 11mLHR-BOI
$1,033

Search by stops

Search by airline

Search by price

Recent one-way flight deals

10/21Mon
3 stops
42h 55mIDA-LHR
$357
8/19Mon
3 stops
31h 10mBOI-LGW
$412
7/31Wed
2 stops
37h 55mBOI-LGW
$432
8/18Sun
3 stops
29h 46mBOI-LGW
$434
10/12Sat
2 stopsWestJet
23h 20mBOI-LHR
$501
10/12Sat
2 stopsWestJet
23h 20mBOI-LHR
$505
7/31Wed
1 stopVirgin Atlantic
12h 05mBOI-LHR
$568
8/26Mon
1 stopIberia
16h 15mBOI-LHR
$572
10/21Mon
1 stopKLM
13h 55mIDA-LHR
$577
8/16Fri
1 stopVirgin Atlantic
12h 15mBOI-LHR
$618

Search by stops

Search by airline

Search by price

Last minute flights from Idaho to London

Last minute flight, train and bus deals

5/27Mon
multi-stopUnited Airlines
18h 35mIDA-LHR
6/5Wed
multi-stopUnited Airlines
20h 43mLHR-IDA
$836
5/27Mon
multi-stopUnited Airlines
17h 05mIDA-LHR
6/5Wed
multi-stopUnited Airlines
20h 43mLHR-IDA
$841
5/27Mon
multi-stopDelta
21h 15mIDA-LHR
6/5Wed
multi-stopDelta
19h 02mLHR-IDA
$843
5/27Mon
multi-stopDelta
19h 05mIDA-LHR
6/5Wed
multi-stopDelta
14h 17mLHR-IDA
$850
5/24Fri
multi-stopDelta
20h 47mGEG-LHR
6/5Wed
multi-stopDelta
18h 45mLHR-GEG
$888
5/24Fri
multi-stopDelta
17h 02mGEG-LHR
6/5Wed
multi-stopDelta
19h 21mLHR-GEG
$895
5/24Fri
multi-stopAir France
34h 35mGEG-LHR
6/5Wed
multi-stopAir France
16h 43mLHR-GEG
$952
5/24Fri
multi-stop
17h 25mGEG-LHR
6/5Wed
multi-stop
21h 00mLHR-GEG
$1,775

Search by stops

Search by airline

Search by price

Flights to London

Return flight deals:

London - Idaho

Cabin classes: