$598+ Cheap flights from London (LON) to Idaho
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/13. Fares are subject to change and may not be available on all flights or dates of travel.
LON — BOI
Dec 3 — Dec 101
Round-trip
1 adult, Economy
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Cheapest flights from London to IdahoExplore the most affordable flight options available from London to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 3, 2026.
Explore the most affordable flight options available from London to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 3, 2026.
This Trip.com deal was found by Cheapflights users on 11/2. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/22:45 pm -
1 stop16h 14m
Wed 12/96:37 am -
1 stop22h 43m
Deal found 11/2![Alaska Airlines logo]()
$808
This Trip.com deal was found by Cheapflights users on 11/2. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/27:40 am -
2 stops17h 43m
Wed 12/94:10 pm -
2 stops36h 40m
Deal found 11/2![Multiple Airlines logo]()
$835
This Justfly.com deal was found by Cheapflights users on 11/2. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/212:45 pm -
1 stop28h 37m
Sat 12/56:00 pm -
1 stop35h 20m
Deal found 11/2![Alaska Airlines logo]()
$982
This Scandinavian Airlines deal was found by Cheapflights users on 11/1. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/216:40 am -
2 stops23h 12m
Sat 12/54:10 pm -
2 stops18h 30m
Deal found 11/1![Scandinavian Airlines logo]()
$983
This Alaska Airlines deal was found by Cheapflights users on 10/30. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/212:45 pm -
1 stop31h 43m
Sat 11/286:33 am -
1 stop22h 47m
Deal found 10/30![Alaska Airlines logo]()
$997
This United Airlines deal was found by Cheapflights users on 10/31. 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 12/151:35 pm -
2 stops28h 33m
Tue 12/225:25 pm -
1 stop33h 15m
Deal found 10/31![United Airlines logo]()
$1,001
This oojo deal was found by Cheapflights users on 10/31. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/912:15 pm -
2 stops18h 31m
Thu 11/1212:49 pm -
2 stops23h 41m
Deal found 10/31![Icelandair logo]()
$1,030
This Icelandair deal was found by Cheapflights users on 10/29. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/218:35 pm -
2 stops33h 25m
Sat 11/286:33 am -
2 stops21h 17m
Deal found 10/29![Multiple Airlines logo]()
$1,062
Best flights from London to IdahoDiscover carefully curated flight deals from London to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 3, 2026.
Discover carefully curated flight deals from London to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 3, 2026.
This Scandinavian Airlines deal was found by Cheapflights users on 11/1. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/216:40 am -
3 stops23h 12m
Sat 12/54:10 pm -
2 stops18h 30m
Deal found 11/1![Scandinavian Airlines logo]()
$987
This Alaska Airlines deal was found by Cheapflights users on 10/29. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/212:45 pm -
1 stop31h 43m
Sat 11/286:33 am -
1 stop22h 47m
Deal found 10/29![Alaska Airlines logo]()
$999
This Icelandair deal was found by Cheapflights users on 11/1. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/218:35 pm -
2 stops33h 25m
Sat 11/286:33 am -
2 stops21h 17m
Deal found 11/1![Multiple Airlines logo]()
$1,106
This United Airlines deal was found by Cheapflights users on 10/31. 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 12/161:35 pm -
1 stop16h 24m
Wed 12/236:20 am -
1 stop20h 20m
Deal found 10/31![United Airlines logo]()
$1,148
This United Airlines deal was found by Cheapflights users on 10/31. 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 12/1511:35 am -
1 stop13h 24m
Tue 12/225:25 pm -
1 stop33h 15m
Deal found 10/31![United Airlines logo]()
$1,148
This Condor deal was found by Cheapflights users on 11/2. 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 Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/306:55 am -
2 stops20h 16m
Thu 4/12:00 pm -
2 stops22h 55m
Deal found 11/2![Multiple Airlines logo]()
$1,152
This United Airlines deal was found by Cheapflights users on 10/31. 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.
Fri 2/511:35 am -
1 stop13h 34m
Fri 2/128:20 am -
1 stop14h 35m
Deal found 10/31![United Airlines logo]()
$1,167
This United Airlines deal was found by Cheapflights users on 10/30. 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.
Mon 12/147:50 am -
2 stops34h 18m
Mon 12/218:05 am -
1 stop14h 50m
Deal found 10/30![United Airlines logo]()
$1,184
Last-minute flights from London to IdahoDiscover last-minute flight deals from London to Idaho. Data last updated November 3, 2026 and is based on user searches.
Discover last-minute flight deals from London to Idaho. Data last updated November 3, 2026 and is based on user searches.
This The Travel House deal was found by Cheapflights users on 10/31. 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 The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/52:45 pm -
1 stop25h 22m
Thu 11/126:21 pm -
1 stop34h 59m
Deal found 10/31![Alaska Airlines logo]()
$1,105
This oojo deal was found by Cheapflights users on 10/31. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/912:15 pm -
2 stops18h 31m
Thu 11/1212:49 pm -
2 stops23h 41m
Deal found 10/31![Icelandair logo]()
$1,030
This Justfly.com deal was found by Cheapflights users on 11/1. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/212:45 pm -
1 stop16h 14m
Sat 12/54:10 pm -
1 stop13h 10m
Deal found 11/1![Alaska Airlines logo]()
$982
This Scandinavian Airlines deal was found by Cheapflights users on 11/1. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/216:40 am -
2 stops23h 12m
Sat 12/54:10 pm -
2 stops18h 30m
Deal found 11/1![Scandinavian Airlines logo]()
$983
This Alaska Airlines deal was found by Cheapflights users on 10/30. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/212:45 pm -
1 stop31h 43m
Sat 11/286:33 am -
1 stop22h 47m
Deal found 10/30![Alaska Airlines logo]()
$997
This Icelandair deal was found by Cheapflights users on 10/29. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/218:35 pm -
2 stops33h 25m
Sat 11/286:33 am -
2 stops21h 17m
Deal found 10/29![Multiple Airlines logo]()
$1,062
This Icelandair deal was found by Cheapflights users on 11/2. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/218:35 pm -
2 stops32h 37m
Sat 12/58:20 am -
2 stops19h 30m
Deal found 11/2![Multiple Airlines logo]()
$1,092
One-way flights from London to IdahoSearch for one-way flight options from London to Idaho. Find affordable one-way fares based on user searches. Data last updated November 3, 2026.
Search for one-way flight options from London to Idaho. Find affordable one-way fares based on user searches. Data last updated November 3, 2026.
This Kiwi.com deal was found by Cheapflights users on 11/2. 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.
Sat 3/1311:05 am -
3 stops37h 14m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Multiple Airlines logo]()
$598
This Kiwi.com deal was found by Cheapflights users on 11/2. 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.
Thu 4/82:10 pm -
2 stops35h 21m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Multiple Airlines logo]()
$604
This Kiwi.com deal was found by Cheapflights users on 11/2. 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.
Tue 12/156:00 am -
3 stops37h 21m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Multiple Airlines logo]()
$617
This Kiwi.com deal was found by Cheapflights users on 11/2. 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.
Wed 12/168:15 am -
3 stops46h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Multiple Airlines logo]()
$623
This Kiwi.com deal was found by Cheapflights users on 11/2. 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.
Tue 3/168:15 am -
3 stops36h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Multiple Airlines logo]()
$638
This Kiwi.com deal was found by Cheapflights users on 11/2. 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 12/146:00 am -
3 stops37h 21m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Multiple Airlines logo]()
$639
This Kiwi.com deal was found by Cheapflights users on 11/2. 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.
Wed 4/215:00 pm -
2 stops30h 54m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Multiple Airlines logo]()
$642
This Kiwi.com deal was found by Cheapflights users on 11/2. 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.
Tue 4/1311:20 am -
3 stops34h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Multiple Airlines logo]()
$643
Find flight deals from London to Idaho
Keep the following information in mind while searching for London to Idaho flight deals. Data was last updated November 3, 2026.
Round-trip from | $808 (Trip.com) |
|---|---|
One-way from | $598 (Kiwi.com) |
Popular in | August |
Cheapest in | April |
Average price | $979 |
Cheapflights Fare Finder
Customize your flight search to find flights from London to Idaho 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 7,457,451 searches. Data last updated November 3, 2026.
Use the filters below to find and compare flights from London to Idaho that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
LondonBoise
LHR London Heathrow - BOI Boise Air Term. Gowen Fld
LHRBOI
London Heathrow
Mon 3/15
11:35 am-10:01 am
1 stop28h 26m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$721
LondonBoise
LHR London Heathrow - BOI Boise Air Term. Gowen Fld
LHRBOI
London Heathrow
Wed 1/6
1:35 pm-11:55 am
1 stop29h 20m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$732
LondonBoise
LHR London Heathrow - BOI Boise Air Term. Gowen Fld
LHRBOI
London Heathrow
Sun 3/21
8:35 pm-10:20 pm
2 stops55h 45m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$744
LondonBoise
LHR London Heathrow - BOI Boise Air Term. Gowen Fld
LHRBOI
London Heathrow
Fri 4/2
9:25 pm-10:20 pm
2 stops31h 55m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$745
LondonBoise
LHR London Heathrow - BOI Boise Air Term. Gowen Fld
LHRBOI
London Heathrow
Sun 3/21
8:35 pm-11:58 pm
2 stops33h 23m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$776
LondonBoise
LHR London Heathrow - BOI Boise Air Term. Gowen Fld
LHRBOI
London Heathrow
Wed 4/7
2:10 pm-11:06 pm
1 stop15h 56m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$833
LondonBoise
LHR London Heathrow - BOI Boise Air Term. Gowen Fld
LHRBOI
London Heathrow
Tue 4/6
10:35 am-7:16 pm
1 stop15h 41m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$839
Quickest round-trip
LondonBoise
LHR London Heathrow - BOI Boise Air Term. Gowen Fld
LHRBOI
London Heathrow
Fri 4/2
5:00 pm-11:56 pm
1 stop13h 56m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$856
LondonBoise
LHR London Heathrow - BOI Boise Air Term. Gowen Fld
LHRBOI
London Heathrow
Sat 11/21
6:40 am-10:52 pm
3 stops23h 12m
Boise Air Term. Gowen Fld
Sat 12/5
4:10 pm-5:40 pm
2 stops18h 30m
$987
LondonBoise
LHR London Heathrow - BOI Boise Air Term. Gowen Fld
LHRBOI
London Heathrow
Sat 11/21
2:45 pm-3:28 pm
1 stop31h 43m
Boise Air Term. Gowen Fld
Sat 11/28
6:33 am-12:20 pm
1 stop22h 47m
$999
Showing 1-10 of 16 resultsSorted by cheapest first
Best time to book a flight from London to Idaho
Have a flexible travel schedule? Discover the best time to fly to Idaho from London with our price prediction graph.
LHR-BOI
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 London to Idaho
LON-USID
LHR-BOI
What is the cheapest month to book a flight from London to Idaho?
Currently, April is the cheapest month in which you can book a flight from London to Idaho (average of $847). Flying from London to Idaho in August is currently the most expensive (average of $1,490). 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.
How much does it cost to fly round-trip from London to Idaho?
Airfare is typical for this route at the moment.
London to Idaho flights typically cost between $797 and $1,006 in December.The cheapest round-trip price found within the last 5 days was $808 on Alaska Airlines (Dec 2-Dec 9).
Related info for your journey
Find useful and relevant information for your journey from London to Idaho. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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