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Cheap flights from Idaho to London from £250

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Idaho to London departing on 6/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags
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Find the cheapest flights from Idaho to London

Cheap return flights

Enter your travel dates to find the best prices.
United Airlines Logo
17:40 - 09:40
IDA
-
LHR
33h 00m
1 stop
United Airlines Logo
06:35 - 17:22
LHR
-
IDA
17h 47m
2 stops
£615United Airlines
Mon, 30 Nov - Thu, 3 Dec
United Airlines Logo
17:40 - 09:40
IDA
-
LHR
33h 00m
1 stop
United Airlines Logo
06:35 - 09:28
LHR
-
IDA
33h 53m
2 stops
£619United Airlines
Mon, 30 Nov - Thu, 3 Dec
Multiple Airlines Logo
07:50 - 08:55
JAC
-
LHR
18h 05m
1 stop
Multiple Airlines Logo
20:15 - 21:02
LHR
-
JAC
30h 47m
2 stops
£635Multiple Airlines
Sat, 24 Oct - Sun, 25 Oct
Multiple Airlines Logo
07:50 - 07:40
JAC
-
LHR
16h 50m
2 stops
Multiple Airlines Logo
20:15 - 21:02
LHR
-
JAC
30h 47m
2 stops
£638Multiple Airlines
Sat, 24 Oct - Sun, 25 Oct
Scandinavian Airlines Logo
12:14 - 17:40
BOI
-
LHR
22h 26m
2 stops
Scandinavian Airlines Logo
19:30 - 18:40
LHR
-
BOI
30h 10m
2 stops
£652Scandinavian Airlines
Tue, 15 Sep - Mon, 28 Sep
Iberia Logo
05:25 - 10:00
GEG
-
LHR
20h 35m
1 stop
Iberia Logo
06:15 - 20:55
LHR
-
GEG
22h 40m
2 stops
£652Iberia
Wed, 18 Nov - Wed, 25 Nov
Scandinavian Airlines Logo
12:14 - 16:00
BOI
-
LHR
20h 46m
2 stops
Scandinavian Airlines Logo
06:40 - 18:40
LHR
-
BOI
19h 00m
2 stops
£653Scandinavian Airlines
Tue, 8 Sep - Tue, 22 Sep
Delta Logo
16:00 - 15:00
BOI
-
LHR
16h 00m
1 stop
Delta Logo
06:30 - 18:33
LHR
-
BOI
19h 03m
2 stops
£655Delta
Wed, 7 Oct - Tue, 13 Oct
Delta Logo
07:00 - 07:10
GEG
-
LHR
16h 10m
2 stops
Delta Logo
06:30 - 23:42
LHR
-
GEG
24h 12m
2 stops
£657Delta
Wed, 14 Oct - Wed, 28 Oct
Iberia Logo
05:25 - 14:05
GEG
-
LCY
24h 40m
2 stops
Iberia Logo
07:50 - 20:55
LCY
-
GEG
21h 05m
2 stops
£734Iberia
Wed, 18 Nov - Wed, 25 Nov

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Virgin Atlantic flights from Idaho to London

Our best Virgin Atlantic deals on Idaho to London flight tickets
Virgin Atlantic
8 Dec
IDA06:00Idaho Falls Fanning Field
20h 00m
2 stops
LHR09:00London Heathrow
15 Dec
LHR11:05London Heathrow
18h 14m
2 stops
IDA22:19Idaho Falls Fanning Field
£682
Virgin Atlantic
30 Dec
IDA06:00Idaho Falls Fanning Field
18h 05m
2 stops
LHR07:05London Heathrow
7 Jan
LHR06:20London Heathrow
22h 59m
2 stops
IDA22:19Idaho Falls Fanning Field
£708
Virgin Atlantic
8 Jul
BOI11:53Boise Air Term. Gowen Fld
22h 27m
2 stops
LCY17:20London City
14 Jul
LCY09:20London City
21h 26m
2 stops
BOI23:46Boise Air Term. Gowen Fld
£1,180

Air Canada flights from Idaho to London

Our best Air Canada deals on Idaho to London flight tickets
Air Canada
29 Sept
GEG13:05Spokane
38h 45m
2 stops
LHR11:50London Heathrow
9 Oct
LHR15:05London Heathrow
35h 26m
2 stops
GEG18:31Spokane
£685
Air Canada
27 Sept
GEG13:38Spokane
36h 22m
2 stops
LHR10:00London Heathrow
7 Oct
LHR15:05London Heathrow
39h 11m
2 stops
GEG22:16Spokane
£687
Air Canada
2 Oct
GEG13:38Spokane
56h 57m
2 stops
LHR06:35London Heathrow
23 Oct
LHR12:05London Heathrow
32h 29m
2 stops
GEG12:34Spokane
£697

momondo Fare Finder

 
Customise your flight search to find flights from Idaho to London that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 7 July 2026.
Use the filters below to find and compare flights from Idaho to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Mon 30/11

17:40-09:40

1 stop33h 00m

London Heathrow

Thu 3/12

06:35-17:22

2 stops17h 47m

£615

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Mon 30/11

17:40-09:40

1 stop33h 00m

London Heathrow

Thu 3/12

06:35-09:28

2 stops33h 53m

£619

JacksonLondon

JAC - LHR

JACLHR

Jackson Hole

Sat 24/10

07:50-08:55

1 stop18h 05m

London Heathrow

Sun 25/10

20:15-21:02

2 stops30h 47m

£635

JacksonLondon

JAC - LHR

JACLHR

Jackson Hole

Sat 24/10

07:50-07:40

2 stops16h 50m

London Heathrow

Sun 25/10

20:15-21:02

2 stops30h 47m

£638

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 15/9

12:14-17:40

2 stops22h 26m

London Heathrow

Mon 28/9

19:30-18:40

2 stops30h 10m

£652

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Wed 18/11

05:25-10:00

1 stop20h 35m

London Heathrow

Wed 25/11

06:15-20:55

2 stops22h 40m

£652

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 8/9

12:14-16:00

2 stops20h 46m

London Heathrow

Tue 22/9

06:40-18:40

2 stops19h 00m

£653
Fastest return journey

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Wed 7/10

16:00-15:00

1 stop16h 00m

London Heathrow

Tue 13/10

06:30-18:33

2 stops19h 03m

£655

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Wed 14/10

07:00-07:10

2 stops16h 10m

London Heathrow

Wed 28/10

06:30-23:42

2 stops24h 12m

£657

SpokaneLondon

GEG - LCY

GEGLCY

Spokane

Wed 18/11

05:25-14:05

2 stops24h 40m

London City

Wed 25/11

07:50-20:55

2 stops21h 05m

£734

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to London from

How to get the cheapest flight ticket from Idaho to London

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to London?

The cheapest month to fly to London from Idaho is in October. Flight prices, which tend to average around £299, are often lower during this time because this is during the off-season. The month of November is another great option to travel to London, with average flight prices from Idaho averaging around £409.

Cheap Idaho to London flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Idaho to London

Fastest flight time

11h 43m

Direct flights

None
The fastest flight from Idaho to London takes 11h 43m
There are no direct flights from Idaho to London. There are no popular flight routes from Idaho to London.
Search flight deals

Frequently asked questions about flying from Idaho to London

  • When did momondo last update prices for flights from Idaho to London?

    Prices for flights from Idaho to London are updated daily.

  • How old do you have to be to fly from Idaho to London?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Idaho to London.

  • What documentation or ID do you need to fly to London?

    The travel and health documents required for your trip to London can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Eastbourne
Wembley
Gatwick
Milton Keynes
Luton
Southend-on-Sea
Slough
Maidstone
Ipswich
Ilford
Folkestone
Canterbury
Guildford
Hayes
Hastings
Chichester
Bedford
Colchester
Harlow
Chelmsford

Why use momondo?

Why should I use momondo to find a flight deal from Idaho to London?

It is quick and easy to find Idaho to London flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to London that suits you.

Can I find flights from Idaho to London with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to London from Idaho with this policy.

How can momondo help me find flights from Idaho to London?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Idaho to London.

I’m not ready to book a flight from Idaho to London right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to London from Idaho. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your London trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
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Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London
London City Airport
London Gatwick Airport
London Heathrow Airport
London Luton Airport
London Southend Airport
London Stansted Airport