Find flights
When to book
FAQs & Tips
Direct Flights
Deals

$363 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 9/30. 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.
1 adult
0 bags
Wed 6/19
Wed 6/26

Search hundreds of travel sites at once for deals on flights to London

In the last 7 days travelers have searched 41,611,298 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Good to know

Low season

February

High season

May

Cheapest flight

$363
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

9/23Mon
2 stopsDelta
16h 49mGEG-LGW
10/1Tue
2 stopsDelta
20h 01mLGW-GEG
$719
10/1Tue
1 stopAmerican Airlines
17h 02mBOI-LHR
10/22Tue
2 stopsAmerican Airlines
19h 26mLHR-BOI
$720
10/1Tue
1 stopUnited Airlines
19h 40mIDA-LHR
10/31Thu
2 stopsUnited Airlines
33h 57mLHR-IDA
$729
10/1Tue
2 stopsUnited Airlines
16h 45mIDA-LHR
10/31Thu
2 stopsUnited Airlines
37h 28mLHR-IDA
$733
10/9Wed
1 stopAir France
15h 30mGEG-LHR
11/1Fri
2 stopsAir France
17h 39mLHR-GEG
$744
8/17Sat
1 stopFinnair
16h 15mBOI-LHR
8/30Fri
1 stopFinnair
15h 26mLHR-BOI
$748
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
15h 00mLHR-BOI
$773
8/11Sun
1 stopFinnair
16h 15mBOI-LHR
9/2Mon
1 stopFinnair
15h 26mLHR-BOI
$823
7/31Wed
1 stopAir France
14h 09mBOI-LHR
8/10Sat
1 stopAir France
19h 03mLHR-BOI
$941

Search by stops

Search by airline

Search by price

Recent one-way flight deals

9/30Mon
3 stops
44h 45mIDA-LHR
$363
9/22Sun
1 stop
15h 06mGEG-LGW
$365
9/23Mon
3 stops
45h 50mIDA-LHR
$367
8/26Mon
3 stops
39h 35mBOI-LGW
$403
7/22Mon
3 stops
32h 56mBOI-LGW
$430
10/12Sat
2 stopsWestJet
18h 00mBOI-LHR
$501
9/22Sun
2 stopsIcelandair
14h 15mGEG-LGW
$556
8/26Mon
1 stopIberia
16h 14mBOI-LHR
$572
9/24Tue
1 stopKLM
13h 55mIDA-LHR
$577
9/26Thu
2 stopsKLM
18h 45mIDA-LHR
$627

Search by stops

Search by airline

Search by price

Last minute flights from Idaho to London

Last minute flight, train and bus deals

5/21Tue
multi-stopAir France
15h 10mGEG-LHR
5/28Tue
multi-stopAir France
16h 44mLHR-GEG
$787
5/21Tue
multi-stopDelta
18h 05mGEG-LHR
5/28Tue
multi-stopDelta
20h 02mLHR-GEG
$791
5/21Tue
multi-stopKLM
17h 05mGEG-LHR
5/28Tue
multi-stopKLM
13h 43mLHR-GEG
$794
5/21Tue
multi-stopAmerican Airlines
18h 05mGEG-LGW
5/28Tue
multi-stopAmerican Airlines
20h 58mLGW-GEG
$1,277
5/24Fri
multi-stopUnited Airlines
21h 56mGEG-LHR
6/5Wed
multi-stopUnited Airlines
33h 32mLHR-GEG
$1,281
5/24Fri
multi-stopUnited Airlines
21h 00mGEG-LHR
6/5Wed
multi-stopUnited Airlines
33h 32mLHR-GEG
$1,285
5/24Fri
multi-stopAmerican Airlines
15h 35mGEG-LHR
6/5Wed
multi-stopAmerican Airlines
17h 01mLHR-GEG
$1,301
5/24Fri
multi-stopAmerican Airlines
16h 00mIDA-LHR
5/31Fri
multi-stopAmerican Airlines
15h 29mLHR-IDA
$1,303
5/21Tue
multi-stop
22h 40mGEG-LCY
5/28Tue
multi-stop
19h 42mLCY-GEG
$1,440
5/24Fri
multi-stop
19h 25mGEG-LHR
6/5Wed
multi-stop
21h 00mLHR-GEG
$1,918

Search by stops

Search by airline

Search by price

Flights to London

Return flight deals:

London - Idaho

Cabin classes: