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Cheap flights from Idaho to London City Airport from £359

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 24/11. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — LCY
12 Oct — 19 Oct1
1 adult
1 adult, Economy

Cheap flight deals from Idaho to London City

Keep the following information in mind while searching for Idaho to London City flight deals. Data was last updated 12 September 2025.

Round-trip from

£509

One-way from

£359

Popular in

June

Cheapest in

October

Average price

£585
Delta
  • Delta
  • 10/3-25/3
  • 4 total stops
  • 83h 40m total
  • Idaho to London
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United Airlines
  • United Airlines
  • 24/11
  • 2 total stops
  • 21h 33m total
  • Idaho to London
Search Deals
Highest demand for flights based on searches. 23% potential increase in price (£154 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£26 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2025
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Find flight deals from Idaho to London City

Cheapest flights from Idaho to London City
Explore the most affordable flight options available from Idaho to London City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 September 2025.

Tue 21/1005:05GEG - LCY
3 stops23h 25mMultiple Airlines
Tue 16/1209:50LCY - GEG
2 stops33h 54mMultiple Airlines
Deal found 10/9£547
Tue 30/908:20BOI - LCY
2 stops21h 10mMultiple Airlines
Fri 31/1009:55LCY - BOI
2 stops19h 33mMultiple Airlines
Deal found 11/9£550
Tue 4/1105:10GEG - LCY
2 stops27h 30mMultiple Airlines
Tue 11/1109:50LCY - GEG
2 stops21h 39mMultiple Airlines
Deal found 12/9£554
Wed 12/1106:00GEG - LCY
2 stops26h 40mLufthansa
Wed 3/1218:10LCY - GEG
2 stops32h 34mLufthansa
Deal found 12/9£587
Thu 13/1114:40BOI - LCY
2 stops20h 00mMultiple Airlines
Mon 17/1118:15LCY - BOI
2 stops30h 54mMultiple Airlines
Deal found 10/9£588
Fri 31/1005:10GEG - LCY
3 stops23h 30mMultiple Airlines
Tue 11/1109:50LCY - GEG
2 stops21h 39mMultiple Airlines
Deal found 9/9£619
Sun 26/1012:45GEG - LCY
2 stops21h 55mMultiple Airlines
Sun 2/1117:15LCY - GEG
2 stops35h 30mMultiple Airlines
Deal found 11/9£636
Fri 26/911:29GEG - LCY
2 stops16h 11mDelta
Mon 6/1007:45LCY - GEG
2 stops18h 58mDelta
Deal found 11/9£636
Sat 25/1012:35BOI - LCY
3 stops18h 05mMultiple Airlines
Sat 1/1112:20LCY - BOI
3 stops40h 01mMultiple Airlines
Deal found 10/9£681
Wed 8/1013:00JAC - LCY
2 stops20h 40mDelta
Wed 15/1007:45LCY - JAC
2 stops20h 44mDelta
Deal found 11/9£772
Fri 10/1005:05GEG - LCY
3 stops22h 35mMultiple Airlines
Fri 17/1008:55LCY - GEG
2 stops33h 44mMultiple Airlines
Deal found 10/9£1,015
Sun 26/1008:17BOI - LCY
2 stops22h 33mMultiple Airlines
Sun 2/1117:15LCY - BOI
2 stops35h 06mMultiple Airlines
Deal found 11/9£1,026

Cheapflights Fare Finder

 
Customise your flight search to find flights from Idaho to London City 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, Cheapflights users made 858,174 searches. Data last updated 12 September 2025.
Use the filters below to find and compare flights from Idaho to London City Airport that are best for you.

Fly from

Idaho

Fly to

London City

Route

Depart

Return

Price

SpokaneLondon

GEG - LCY

GEGLCY

Spokane

Tue 10/3

11:15-07:15

2 stops37h 00m

London City

Wed 25/3

08:40-00:20

2 stops46h 40m

£509

SpokaneLondon

GEG - LCY

GEGLCY

Spokane

Wed 25/2

11:40-12:50

2 stops17h 10m

London City

Wed 4/3

09:50-21:24

2 stops19h 34m

£543

SpokaneLondon

GEG - LCY

GEGLCY

Spokane

Thu 5/3

11:15-16:35

2 stops21h 20m

London City

Mon 9/3

09:20-18:46

2 stops40h 26m

£546

BoiseLondon

BOI - LCY

BOILCY

Boise Air Term. Gowen Fld

Tue 30/9

08:20-12:30

2 stops21h 10m

London City

Fri 31/10

09:55-23:28

2 stops19h 33m

£550

SpokaneLondon

GEG - LCY

GEGLCY

Spokane

Wed 11/3

19:21-16:35

2 stops38h 14m

London City

Tue 24/3

10:00-18:46

2 stops39h 46m

£550

SpokaneLondon

GEG - LCY

GEGLCY

Spokane

Wed 11/3

19:21-16:35

2 stops38h 14m

London City

Wed 25/3

08:40-00:20

2 stops46h 40m

£550

SpokaneLondon

GEG - LCY

GEGLCY

Spokane

Wed 11/2

11:25-16:40

2 stops21h 15m

London City

Thu 19/2

09:40-10:55

3 stops33h 15m

£552

SpokaneLondon

GEG - LCY

GEGLCY

Spokane

Tue 21/10

11:20-18:35

2 stops23h 15m

London City

Tue 16/12

09:50-11:44

2 stops33h 54m

£552

SpokaneLondon

GEG - LCY

GEGLCY

Spokane

Tue 4/11

05:10-16:40

2 stops27h 30m

London City

Tue 11/11

09:50-23:29

2 stops21h 39m

£554

BoiseLondon

BOI - LCY

BOILCY

Boise Air Term. Gowen Fld

Thu 13/11

14:40-17:40

2 stops20h 00m

London City

Mon 17/11

18:15-18:09

2 stops30h 54m

£588

Flights are sorted by cheapest return flights first.

Deals found on 10/9

Showing 1-10 of 27 results
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Best time to book a flight from Idaho to London City

Have a flexible travel schedule? Discover the best time to fly to London City from Idaho with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Idaho to London City Airport
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Idaho to London City. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Idaho to London City Airport?

    Departing from Idaho to London City Airport will take you 37h. The distance from Idaho to London City Airport is about 4655 mi.

  • What are the most popular routes from Idaho to London City Airport?

    Most travelers choose Spokane - London City, Boise Air Term. Gowen Fld - London City or Jackson Hole - London City when deciding on the best route from Idaho to London City Airport.

  • Can I find deals for flights from Idaho to London City that include hotel bookings?

    Yes. In addition to deals on Idaho to London City flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Idaho to London City?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Idaho to London City.

  • Can I find deals for business class flights from Idaho to London City?

    Yes. Cheapflights offers flight deals from Idaho to London City by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Idaho to London City Airport?

    Currently, February is the cheapest month in which you can book a flight from Idaho to London City Airport (average of £161). Flying from Idaho to London City Airport in August is currently the most expensive (average of £214). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near London City Airport?

Book flights to London City Airport if you plan to visit one of these locations
Milton Keynes
Croydon
Hounslow
Gatwick
Slough
Luton
Deal
Wembley
Ilford
Crawley
Hayes
Watford
Folkestone
Winchester
Chichester
Ipswich
Dartford
Eastbourne
Guildford
Bishop's Stortford

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Alternative routes for Idaho to London City

See prices for flight routes from nearby airports that may be better suited for you.
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