$278+ Cheap flights from Idaho to London (LON)
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 7/14. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — LON
Jun 17 — Jun 241
1 adult, Economy
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Find cheap flights from Idaho to London with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Idaho to London
Keep the following information in mind while searching for Idaho to London flight deals. Data was last updated June 12, 2025.
Round-trip from | $605 (Kiwi.com) |
|---|---|
One-way from | $278 (Norse) |
Popular in | June |
Cheapest in | October |
Average price | $1,417 |
Find flight deals from Idaho to London
Cheapest flights from Idaho to LondonExplore the most affordable flight options available from Idaho to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.
Explore the most affordable flight options available from Idaho to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.
This Kiwi.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/296:25 amGEG - LGW
1 stop19h 05mMultiple Airlines
Wed 10/810:55 amLGW - GEG
1 stop19h 32mMultiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$605
This Kiwi.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/158:18 amBOI - LGW
1 stop19h 37mMultiple Airlines
Mon 8/252:00 pmLGW - BOI
2 stops40h 59mMultiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$614
This FlightHub deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/83:05 pmBOI - LHR
2 stops20h 25mScandinavian Airlines
Fri 10/1710:20 amLHR - BOI
2 stops19h 44mScandinavian Airlines
Deal found 6/10![Scandinavian Airlines logo]()
$702
This CheapOair deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/121:00 pmGEG - LHR
2 stops36h 20mScandinavian Airlines
Fri 9/266:40 amLHR - GEG
2 stops18h 17mScandinavian Airlines
Deal found 6/10![Scandinavian Airlines logo]()
$719
This Air Canada deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/96:20 amBOI - LHR
2 stops22h 30mAir Canada
Fri 11/212:30 pmLHR - BOI
2 stops30h 14mAir Canada
Deal found 6/11![Air Canada logo]()
$728
This United Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/195:15 amGEG - LHR
1 stop23h 05mUnited Airlines
Fri 8/299:30 amLHR - GEG
2 stops33h 57mUnited Airlines
Deal found 6/11![United Airlines logo]()
$728
This Iberia deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/97:21 amBOI - LHR
1 stop17h 54mIberia
Wed 11/197:25 amLHR - BOI
2 stops20h 53mIberia
Deal found 6/11![Iberia logo]()
$733
This Booking.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/711:25 amGEG - LHR
2 stops59h 05mMultiple Airlines
Tue 11/187:40 amLHR - GEG
2 stops21h 05mMultiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$733
This United Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/2610:45 amJAC - LHR
1 stop16h 55mUnited Airlines
Thu 11/66:00 pmLHR - JAC
2 stops33h 37mUnited Airlines
Deal found 6/11![United Airlines logo]()
$735
This United Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/310:40 amBOI - LHR
1 stop16h 00mUnited Airlines
Tue 9/167:25 amLHR - BOI
2 stops19h 08mUnited Airlines
Deal found 6/12![United Airlines logo]()
$735
This Air Canada deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/15:15 amGEG - LHR
2 stops44h 45mAir Canada
Tue 9/169:30 amLHR - GEG
2 stops45h 35mAir Canada
Deal found 6/10![Air Canada logo]()
$740
This Air France deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1211:30 amJAC - LHR
1 stop15h 30mAir France
Thu 11/206:20 amLHR - JAC
2 stops17h 02mAir France
Deal found 6/12![Air France logo]()
$742
Cheapflights Fare Finder
Customize 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, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
Use the filters below to find and compare flights from Idaho to London that are best for you.
Fly from
Idaho
Fly to
London
Route
Depart
Return
Price
SpokaneLondon
GEG - LGW
GEGLGW
Spokane
Mon 9/29
6:25 am-9:30 am
1 stop19h 05m
London Gatwick
Wed 10/8
10:55 am-10:27 pm
1 stop19h 32m
$605
BoiseLondon
BOI - LGW
BOILGW
Boise Air Term. Gowen Fld
Fri 8/15
8:18 am-10:55 am
1 stop19h 37m
London Gatwick
Mon 8/25
2:00 pm-11:59 pm
2 stops40h 59m
$614
BoiseLondon
BOI - LHR
BOILHR
Boise Air Term. Gowen Fld
Wed 10/8
3:05 pm-6:30 pm
2 stops20h 25m
London Heathrow
Fri 10/17
10:20 am-11:04 pm
2 stops19h 44m
$702
SpokaneLondon
GEG - LHR
GEGLHR
Spokane
Fri 9/12
1:00 pm-9:20 am
2 stops36h 20m
London Heathrow
Fri 9/26
6:40 am-4:57 pm
2 stops18h 17m
$719
BoiseLondon
BOI - LHR
BOILHR
Boise Air Term. Gowen Fld
Sun 11/9
6:20 am-11:50 am
2 stops22h 30m
London Heathrow
Fri 11/21
2:30 pm-1:44 pm
2 stops30h 14m
$728
SpokaneLondon
GEG - LHR
GEGLHR
Spokane
Tue 8/19
5:15 am-12:20 pm
1 stop23h 05m
London Heathrow
Fri 8/29
9:30 am-11:27 am
2 stops33h 57m
$728
BoiseLondon
BOI - LHR
BOILHR
Boise Air Term. Gowen Fld
Sun 11/9
7:21 am-8:15 am
1 stop17h 54m
London Heathrow
Wed 11/19
7:25 am-9:18 pm
2 stops20h 53m
$733
SpokaneLondon
GEG - LHR
GEGLHR
Spokane
Fri 11/7
11:25 am-6:30 am
2 stops59h 05m
London Heathrow
Tue 11/18
7:40 am-8:45 pm
2 stops21h 05m
$733
JacksonLondon
JAC - LHR
JACLHR
Jackson Hole
Sun 10/26
10:45 am-9:40 am
1 stop16h 55m
London Heathrow
Thu 11/6
6:00 pm-8:37 pm
2 stops33h 37m
$735
BoiseLondon
BOI - LHR
BOILHR
Boise Air Term. Gowen Fld
Wed 9/3
10:40 am-9:40 am
1 stop16h 00m
London Heathrow
Tue 9/16
7:25 am-7:33 pm
2 stops19h 08m
$735
Showing 1-10 of 60 results
Best time to book a flight from Idaho to London
Have a flexible travel schedule? Discover the best time to fly to London from Idaho with our price prediction graph.
Estimated round-trip 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
What is the cheapest month to book a flight from Idaho to London?
Currently, November is the cheapest month in which you can book a flight from Idaho to London (average of $661). Flying from Idaho to London in June is currently the most expensive (average of $1,108). 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.
What is the cheapest time of day to fly from ID to LON?
Find hourly flight availability from Idaho to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Idaho to London as you normally would.
Rainfall in London by month
Plan your trip to London by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in London ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London when rainfall is around 1.6 in.
Temperature in London by month
Plan your trip to London by taking into account the average temperature totals by month.
If weather is an important factor for your trip to London, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).
Reviews of airlines servicing London
Get insights into the airlines that provide service to London. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to London. Reviews last updated June 12, 2025.
Peruse reviews from past customers who have flown with Delta, Alaska Airlines and KLM from Idaho to London to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.2
Food
7.3
Crew
8.5
Comfort
7.9
Overall
8.0
Entertainment
7.9
Reviews
1 / 20
10.0
ExcellentKim,May 2025
PIH - SLC
Boarding
8.2
Food
7.3
Crew
8.5
Comfort
7.9
Overall
8.0
Entertainment
7.9
Reviews
1 / 20
10.0
ExcellentKim,May 2025
PIH - SLC
Boarding
8.2
Food
7.3
Crew
8.5
Comfort
7.9
Overall
8.0
Entertainment
7.9
Reviews
1 / 20
10.0
ExcellentKim,May 2025
PIH - SLC
Boarding
8.2
Food
7.3
Crew
8.5
Comfort
7.9
Overall
8.0
Entertainment
7.9
Reviews
1 / 20
10.0
ExcellentKim,May 2025
PIH - SLC
Boarding
8.2
Food
7.3
Crew
8.5
Comfort
7.9
Overall
8.0
Entertainment
7.9
Reviews
1 / 20
10.0
ExcellentKim,May 2025
PIH - SLC
Boarding
8.2
Food
7.3
Crew
8.5
Comfort
7.9
Overall
8.0
Entertainment
7.9
Reviews
1 / 20
10.0
ExcellentKim,May 2025
PIH - SLC
Related info for your journey
Find useful and relevant information for your journey from Idaho to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Idaho?
Book flights to Idaho if you plan to visit one of these locationsHayes
Hounslow
Thornton Heath
Luton
Canterbury
Harrow
Dover
Gatwick
Orpington
Watford
Croydon
Folkestone
Borehamwood
Sutton
Aylesbury
Chelmsford
Brentwood
Chichester
Wembley
Arundel
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Idaho to London
See prices for flight routes from nearby airports that may be better suited for you.
Top 5 airlines flying from Idaho to London
Discover the top 5 airlines that operate flights from Idaho to London. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$555 | Average$774 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$685 | Average$1,004 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$695 | Average$996 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$703 | Average$865 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$727 | Average$1,083 | FlexibilityNo cancel fee | On-timeN/A |