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Cheap flights from Idaho to London from £253

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 22/9. 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
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.
Iberia Logo
12:45 - 12:50
GEG
-
LHR
16h 05m
1 stop
Iberia Logo
06:15 - 20:47
LHR
-
GEG
22h 32m
2 stops
£656Iberia
Wed, 9 Sep - Wed, 7 Oct
Iberia Logo
06:00 - 06:20
GEG
-
LHR
16h 20m
1 stop
Iberia Logo
06:15 - 20:47
LHR
-
GEG
22h 32m
2 stops
£659Iberia
Wed, 12 Aug - Tue, 15 Sep
Delta Logo
15:30 - 17:35
BOI
-
LHR
19h 05m
1 stop
Delta Logo
06:30 - 15:38
LHR
-
BOI
16h 08m
2 stops
£662Delta
Wed, 9 Sep - Wed, 16 Sep
Delta Logo
08:45 - 10:20
BOI
-
LHR
18h 35m
2 stops
Delta Logo
06:30 - 15:38
LHR
-
BOI
16h 08m
2 stops
£666Delta
Wed, 9 Sep - Wed, 16 Sep
Lufthansa Logo
12:25 - 22:40
GEG
-
LHR
26h 15m
2 stops
Lufthansa Logo
09:30 - 21:16
LHR
-
GEG
19h 46m
2 stops
£679Lufthansa
Tue, 5 May - Tue, 19 May
Lufthansa Logo
12:25 - 20:45
GEG
-
LHR
24h 20m
2 stops
Lufthansa Logo
08:30 - 21:16
LHR
-
GEG
20h 46m
2 stops
£680Lufthansa
Tue, 5 May - Tue, 19 May
American Airlines Logo
12:45 - 12:50
GEG
-
LHR
16h 05m
1 stop
American Airlines Logo
08:55 - 20:47
LHR
-
GEG
19h 52m
1 stop
£682American Airlines
Wed, 9 Sep - Wed, 7 Oct
American Airlines Logo
06:00 - 06:20
GEG
-
LHR
16h 20m
1 stop
American Airlines Logo
08:55 - 20:47
LHR
-
GEG
19h 52m
1 stop
£684American Airlines
Wed, 12 Aug - Tue, 15 Sep
Finnair Logo
06:44 - 12:50
BOI
-
LHR
23h 06m
1 stop
Finnair Logo
11:00 - 22:17
LHR
-
BOI
18h 17m
1 stop
£684Finnair
Sun, 13 Sep - Tue, 22 Sep
Finnair Logo
13:18 - 10:50
BOI
-
LHR
14h 32m
1 stop
Finnair Logo
08:55 - 22:17
LHR
-
BOI
20h 22m
1 stop
£684Finnair
Wed, 9 Sep - Wed, 16 Sep

Scandinavian Airlines flights from Idaho to London

Our best Scandinavian Airlines deals on Idaho to London flight tickets
Scandinavian Airlines
15 Sept
GEG10:50Spokane
23h 40m
2 stops
LHR18:30London Heathrow
26 Sept
LHR06:40London Heathrow
20h 07m
2 stops
GEG18:47Spokane
£712
Scandinavian Airlines
15 Sept
GEG10:50Spokane
21h 35m
3 stops
LHR16:25London Heathrow
26 Sept
LHR06:40London Heathrow
18h 28m
3 stops
GEG17:08Spokane
£727
Scandinavian Airlines
16 Aug
BOI10:23Boise Air Term. Gowen Fld
23h 02m
3 stops
LHR16:25London Heathrow
26 Aug
LHR06:40London Heathrow
23h 24m
2 stops
BOI23:04Boise Air Term. Gowen Fld
£759

Virgin Atlantic flights from Idaho to London

Our best Virgin Atlantic deals on Idaho to London flight tickets
Virgin Atlantic
1 Sept
GEG14:45Spokane
16h 15m
1 stop
LHR15:00London Heathrow
11 Sept
LHR11:30London Heathrow
20h 14m
2 stops
GEG23:44Spokane
£713
Virgin Atlantic
11 May
JAC13:15Jackson Hole
23h 55m
2 stops
LHR20:10London Heathrow
18 May
LHR11:45London Heathrow
39h 30m
2 stops
JAC20:15Jackson Hole
£734
Virgin Atlantic
31 Mar
GEG06:25Spokane
19h 50m
1 stop
LHR10:15London Heathrow
2 Apr
LHR12:25London Heathrow
19h 38m
2 stops
GEG00:03Spokane
£1,165

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 30 March 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

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Wed 9/9

12:45-12:50

1 stop16h 05m

London Heathrow

Wed 7/10

06:15-20:47

2 stops22h 32m

£656

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Wed 12/8

06:00-06:20

1 stop16h 20m

London Heathrow

Tue 15/9

06:15-20:47

2 stops22h 32m

£659

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Wed 9/9

15:30-17:35

1 stop19h 05m

London Heathrow

Wed 16/9

06:30-15:38

2 stops16h 08m

£662
Fastest return journey

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Wed 9/9

08:45-10:20

2 stops18h 35m

London Heathrow

Wed 16/9

06:30-15:38

2 stops16h 08m

£666

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Tue 5/5

12:25-22:40

2 stops26h 15m

London Heathrow

Tue 19/5

09:30-21:16

2 stops19h 46m

£679

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Tue 5/5

12:25-20:45

2 stops24h 20m

London Heathrow

Tue 19/5

08:30-21:16

2 stops20h 46m

£680

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Wed 9/9

12:45-12:50

1 stop16h 05m

London Heathrow

Wed 7/10

08:55-20:47

1 stop19h 52m

£682

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Wed 12/8

06:00-06:20

1 stop16h 20m

London Heathrow

Tue 15/9

08:55-20:47

1 stop19h 52m

£684

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Sun 13/9

06:44-12:50

1 stop23h 06m

London Heathrow

Tue 22/9

11:00-22:17

1 stop18h 17m

£684

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Wed 9/9

13:18-10:50

1 stop14h 32m

London Heathrow

Wed 16/9

08:55-22:17

1 stop20h 22m

£684

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 £530, are often lower during this time because this is during the off-season. The month of April is another great option to travel to London, with average flight prices from Idaho averaging around £535.

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

12h 05m

Direct flights

None
The fastest flight from Idaho to London takes 12h 05m
There are no direct flights from Idaho to London. There are no popular flight routes from Idaho to London.
Search flight deals

  • 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
Milton Keynes
Luton
Gatwick
Maidstone
Slough
Southend-on-Sea
Ipswich
Wembley
Canterbury
Ilford
Guildford
Hayes
Chelmsford
Dover
Folkestone
Ramsgate
Chichester
Bedford
Worthing

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