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$386+ 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 1/24. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — LON
Jan 26 — Feb 21
Sun 1/26
Sun 2/2
1 adult, Economy
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Cheap flight deals from Idaho to London

Discover tips and strategies to find the most affordable flight options for your journey from Idaho (USID) to London (LON). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 21, 2025.

Round-trip from

$678
(Ovago)

One-way from

$386
(Kiwi.com)
From Idaho to London (LON)
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One-way flight from Idaho to London (LON)
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Find flight deals from Idaho to London

Cheapest flights from Idaho to London
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 January 21, 2025.

This Ovago deal was found by Cheapflights users on 1/21. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/47:15 amBOI - LHR
2 stops27h 25mScandinavian Airlines
Tue 3/115:00 pmLHR - BOI
2 stops35h 50mScandinavian Airlines
Deal found 1/21$678
This United deal was found by Cheapflights users on 1/21. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/32:36 pmBOI - LHR
1 stop12h 04mUnited Airlines
Tue 3/113:00 pmLHR - BOI
2 stops32h 50mUnited Airlines
Deal found 1/21$716
This United Airlines deal was found by Cheapflights users on 1/21. 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 3/35:00 amGEG - LHR
2 stops18h 10mUnited Airlines
Thu 3/273:00 pmLHR - GEG
2 stops36h 53mUnited Airlines
Deal found 1/21$716
This Justfly.com deal was found by Cheapflights users on 1/19. 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.
Mon 9/225:43 amGEG - LHR
2 stops40h 47mAir Canada
Fri 10/32:05 pmLHR - GEG
2 stops30h 35mAir Canada
Deal found 1/19$719
This KLM deal was found by Cheapflights users on 1/20. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/271:10 pmIDA - LHR
1 stop13h 50mKLM
Mon 2/35:50 pmLHR - IDA
2 stops31h 28mKLM
Deal found 1/20$727
This KLM deal was found by Cheapflights users on 1/20. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/251:10 pmGEG - LHR
1 stop13h 25mKLM
Wed 3/266:30 amLHR - GEG
2 stops19h 14mKLM
Deal found 1/20$727
This United Airlines deal was found by Cheapflights users on 1/21. 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 4/2310:40 amJAC - LHR
1 stop16h 00mUnited Airlines
Wed 4/308:30 amLHR - JAC
2 stops19h 22mUnited Airlines
Deal found 1/21$728
This Finnair deal was found by Cheapflights users on 1/21. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/47:05 amBOI - LHR
1 stop17h 15mFinnair
Tue 3/1110:40 amLHR - BOI
1 stop17h 15mFinnair
Deal found 1/21$729
This Air Canada deal was found by Cheapflights users on 1/20. 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.
Tue 10/712:29 pmBOI - LHR
2 stops37h 06mAir Canada
Fri 10/1712:05 pmLHR - BOI
2 stops30h 50mAir Canada
Deal found 1/20$731
This Delta deal was found by Cheapflights users on 1/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/259:15 amGEG - LHR
2 stops17h 55mDelta
Wed 3/266:30 amLHR - GEG
2 stops21h 35mDelta
Deal found 1/20$731
This Flighttix deal was found by Cheapflights users on 1/21. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/76:00 amGEG - LHR
2 stops20h 10mMultiple Airlines
Fri 3/1411:35 amLHR - GEG
1 stop16h 18mMultiple Airlines
Deal found 1/21$764
This Cheapflightsfares deal was found by Cheapflights users on 1/21. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/32:36 pmBOI - LCY
2 stops19h 04mLufthansa
Tue 3/1110:00 amLCY - BOI
2 stops17h 29mLufthansa
Deal found 1/21$766

Find flights from Idaho to London within your budget

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 January 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 3/4

7:15 am-5:40 pm

2 stops27h 25m

London Heathrow

Tue 3/11

5:00 pm-10:50 pm

2 stops35h 50m

$678

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Mon 3/3

2:36 pm-9:40 am

1 stop12h 04m

London Heathrow

Tue 3/11

3:00 pm-5:50 pm

2 stops32h 50m

$716

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Mon 3/3

5:00 am-7:10 am

2 stops18h 10m

London Heathrow

Thu 3/27

3:00 pm-8:53 pm

2 stops36h 53m

$716

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Tue 2/25

1:10 pm-10:35 am

1 stop13h 25m

London Heathrow

Wed 3/26

6:30 am-6:44 pm

2 stops19h 14m

$727

JacksonLondon

JAC - LHR

JACLHR

Jackson Hole

Wed 4/23

7:00 am-6:30 am

2 stops16h 30m

London Heathrow

Wed 4/30

8:30 am-8:52 pm

2 stops19h 22m

$728

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 3/4

7:05 am-7:20 am

1 stop17h 15m

London Heathrow

Tue 3/11

10:40 am-9:55 pm

1 stop17h 15m

$729

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Tue 2/25

9:15 am-11:10 am

2 stops17h 55m

London Heathrow

Wed 3/26

6:30 am-9:05 pm

2 stops21h 35m

$731

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Wed 3/12

7:00 am-4:00 pm

2 stops26h 00m

London Heathrow

Sun 3/16

7:30 pm-11:31 pm

2 stops35h 01m

$756

BoiseLondon

BOI - LCY

BOILCY

Boise Air Term. Gowen Fld

Mon 3/3

2:36 pm-4:40 pm

2 stops19h 04m

London City

Tue 3/11

10:00 am-9:29 pm

2 stops17h 29m

$766

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Mon 2/3

8:25 am-7:10 am

2 stops15h 45m

London Heathrow

Sat 2/15

6:00 pm-10:45 pm

2 stops35h 45m

$773

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

Showing 1-10 of 48 results
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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.

Travel insights for flights from Idaho to London

Get recent, data-driven insights about flights from Idaho to London including ideal travel times, pricing trends, and more.

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 $1,137). 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 January 21, 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 January 21, 2025.
Peruse reviews from past customers who have flown with American Airlines, Iberia and United Airlines 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.
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.6

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
8,521 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.6

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Alaska Airlines
8.0
Very good
9,706 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.6

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM
7.8
Good
1,341 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.6

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Finnair
7.6
Good
1,286 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.6

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Virgin Atlantic
7.5
Good
665 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.6

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

  • What are the cheapest airlines to fly from Idaho to London one-way?

    The cheapest airlines for a one-way flight from Idaho to London are Scandinavian Airlines ($437), United Airlines ($473), and Virgin Atlantic ($473).

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

    The most popular flight routes from Idaho to London are Boise Air Term. Gowen Fld - London Heathrow, Boise Air Term. Gowen Fld - London Gatwick and Spokane - London Heathrow.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Idaho to London 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?

    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 $1,137). 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

Traveling to a place near Idaho?

Book flights to Idaho if you plan to visit one of these locations
Hayes
Hounslow
Thornton Heath
Harrow
Luton
Wembley
Canterbury
Gatwick
Horley
Milton Keynes
Dover
Watford
Orpington
Croydon
Borehamwood
Bromley
Folkestone
Ilford
Aylesbury
Chelmsford

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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.
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Top 4 airlines flying from Idaho to London

Discover the top 4 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 January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$670Average$958FlexibilityNo cancel feeOn-time69%
Virgin AtlanticCheapest$670Average$939FlexibilityNo cancel feeOn-time72%
American AirlinesCheapest$689Average$878FlexibilityNo cancel feeOn-time71%
DeltaCheapest$698Average$1,091FlexibilityNo cancel feeOn-timeN/A
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