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$499+ Cheap flights from Idaho to the United Kingdom

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 6/3. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — LHR
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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Cheap flight deals from Idaho to United Kingdom

Keep the following information in mind while searching for Idaho to United Kingdom flight deals. Data was last updated February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$666
(Gotogate)

One-way from

$499
(Kiwi.com)

Popular in

June

Cheapest in

April

Average price

$787
Provider with most accurate pricing for Boise Air Term. Gowen Fld-London (LON) flight deals.
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Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-London (LON) flights.
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From Idaho to United Kingdom
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One-way flight from Idaho to United Kingdom
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Highest demand for flights based on searches. 28% potential increase in price ($370 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($50 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Find flight deals from Idaho to United Kingdom

Cheapest flights from Idaho to United Kingdom
Explore the most affordable flight options available from Idaho to United Kingdom. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

This Gotogate deal was found by Cheapflights users on 2/20. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/1512:06 pmBOI - LHR
2 stops35h 29mAir Canada
Tue 4/222:05 pmLHR - BOI
2 stops29h 05mAir Canada
Deal found 2/20$666
This Netflights deal was found by Cheapflights users on 2/20. 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 Netflights is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/152:10 pmBOI - LHR
1 stop14h 15mVirgin Atlantic
Tue 4/2212:25 pmLHR - BOI
1 stop18h 34mVirgin Atlantic
Deal found 2/20$674
This United Airlines deal was found by Cheapflights users on 2/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1911:10 amBOI - LHR
1 stop18h 50mUnited Airlines
Wed 3/263:00 pmLHR - BOI
2 stops36h 29mUnited Airlines
Deal found 2/19$677
This United Airlines deal was found by Cheapflights users on 2/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/24:08 pmGEG - LHR
1 stop12h 12mUnited Airlines
Wed 4/97:25 amLHR - GEG
2 stops22h 01mUnited Airlines
Deal found 2/19$688
This StudentUniverse deal was found by Cheapflights users on 2/18. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/157:05 amBOI - LHR
1 stop16h 20mFinnair
Tue 4/2212:00 pmLHR - BOI
1 stop17h 11mFinnair
Deal found 2/18$692
This Delta deal was found by Cheapflights users on 2/18. 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 4/1511:25 amBOI - LHR
2 stops18h 45mDelta
Tue 4/226:30 amLHR - BOI
2 stops17h 33mDelta
Deal found 2/18$693
This Expedia deal was found by Cheapflights users on 2/19. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/197:05 amBOI - LHR
1 stop17h 15mIberia
Wed 3/269:25 amLHR - BOI
1 stop18h 30mIberia
Deal found 2/19$700
This American Airlines deal was found by Cheapflights users on 2/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/153:21 pmGEG - MAN
2 stops19h 44mAmerican Airlines
Tue 4/2912:25 pmMAN - GEG
2 stops18h 34mAmerican Airlines
Deal found 2/20$708
This KLM deal was found by Cheapflights users on 2/20. 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 3/1110:00 amGEG - GLA
2 stops19h 40mKLM
Tue 3/255:15 pmGLA - GEG
2 stops30h 06mKLM
Deal found 2/20$709
This SmartFares deal was found by Cheapflights users on 2/20. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/257:15 amBOI - LHR
2 stops27h 25mScandinavian Airlines
Tue 3/46:40 pmLHR - BOI
2 stops34h 41mScandinavian Airlines
Deal found 2/20$723
This United Airlines deal was found by Cheapflights users on 2/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/155:00 amGEG - MAN
3 stops21h 25mMultiple Airlines
Tue 4/296:50 amMAN - GEG
2 stops22h 36mMultiple Airlines
Deal found 2/19$735
This United Airlines deal was found by Cheapflights users on 2/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/155:00 amGEG - MAN
3 stops21h 25mUnited Airlines
Tue 4/295:55 amMAN - GEG
3 stops22h 55mUnited Airlines
Deal found 2/19$740

Find flights from Idaho to United Kingdom within your budget

Customize your flight search to find flights from Idaho to United Kingdom 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 February 20, 2025.

Fly from

Idaho

Fly to

United Kingdom

Route

Depart

Return

Price

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 4/15

12:06 pm-6:35 am

2 stops35h 29m

London Heathrow

Tue 4/22

2:05 pm-12:10 pm

2 stops29h 05m

$666

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 4/15

2:10 pm-11:25 am

1 stop14h 15m

London Heathrow

Tue 4/22

12:25 pm-11:59 pm

1 stop18h 34m

$674

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Wed 3/19

11:10 am-12:00 pm

1 stop18h 50m

London Heathrow

Wed 3/26

3:00 pm-9:29 pm

2 stops36h 29m

$677

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Wed 4/2

4:08 pm-12:20 pm

1 stop12h 12m

London Heathrow

Wed 4/9

7:25 am-9:26 pm

2 stops22h 01m

$688

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 4/15

7:05 am-6:25 am

1 stop16h 20m

London Heathrow

Tue 4/22

12:00 pm-10:11 pm

1 stop17h 11m

$692

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 4/15

11:25 am-1:10 pm

2 stops18h 45m

London Heathrow

Tue 4/22

6:30 am-5:03 pm

2 stops17h 33m

$693

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Wed 3/19

7:05 am-6:20 am

1 stop17h 15m

London Heathrow

Wed 3/26

9:25 am-9:55 pm

1 stop18h 30m

$700

SpokaneManchester

GEG - MAN

GEGMAN

Spokane

Tue 4/15

3:21 pm-7:05 pm

2 stops19h 44m

Manchester

Tue 4/29

12:25 pm-10:59 pm

2 stops18h 34m

$708

SpokaneGlasgow

GEG - GLA

GEGGLA

Spokane

Tue 3/11

10:00 am-12:40 pm

2 stops19h 40m

Glasgow Intl

Tue 3/25

5:15 pm-4:21 pm

2 stops30h 06m

$709

SpokaneManchester

GEG - MAN

GEGMAN

Spokane

Tue 4/15

5:00 am-10:25 am

3 stops21h 25m

Manchester

Tue 4/29

6:50 am-9:26 pm

2 stops22h 36m

$735

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 45 results
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Best time to book a flight from Idaho to United Kingdom

Have a flexible travel schedule? Discover the best time to fly to United Kingdom 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 United Kingdom

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

What is the cheapest month to book a flight from Idaho to United Kingdom?

Currently, November is the cheapest month in which you can book a flight from Idaho to United Kingdom (average of $661). Flying from Idaho to United Kingdom in June is currently the most expensive (average of $1,136). 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 GB?

Find hourly flight availability from Idaho to United Kingdom. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 20, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Idaho to United Kingdom as you normally would.

Rainfall in United Kingdom by month

Plan your trip to United Kingdom by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in United Kingdom 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 United Kingdom when rainfall is around 1.6 in.

Temperature in United Kingdom by month

Plan your trip to United Kingdom by taking into account the average temperature totals by month.

If weather is an important factor for your trip to United Kingdom, 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 United Kingdom

Get insights into the airlines that provide service to United Kingdom. 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 United Kingdom. Reviews last updated February 20, 2025.
Peruse reviews from past customers who have flown with Delta, KLM and Finnair from Idaho to United Kingdom to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,220 reviews

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

8.0

Boarding

8.2

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

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

Delta
8.0
Very good
8,220 reviews
Delta
8.0
Very good
8,220 reviews

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

8.0

Boarding

8.2

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

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

KLM
7.8
Good
1,333 reviews
Delta
8.0
Very good
8,220 reviews

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

8.0

Boarding

8.2

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

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

Finnair
7.6
Good
1,273 reviews
Delta
8.0
Very good
8,220 reviews

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

8.0

Boarding

8.2

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

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

SWISS
7.5
Good
1,568 reviews
Delta
8.0
Very good
8,220 reviews

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

8.0

Boarding

8.2

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

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

Virgin Atlantic
7.5
Good
654 reviews
Delta
8.0
Very good
8,220 reviews

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

8.0

Boarding

8.2

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

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 United Kingdom. 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 United Kingdom one-way?

    To fly one-way, consider booking your trip with WestJet, which is currently one of the cheapest options available, starting at $547. United Airlines flights start at $564 while deals on Air Canada start at $574 one-way.

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

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

  • How can I find direct flights from Idaho to United Kingdom?

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

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

    Yes. Cheapflights offers flight deals from Idaho to United Kingdom 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 United Kingdom?

    Currently, November is the cheapest month in which you can book a flight from Idaho to United Kingdom (average of $661). Flying from Idaho to United Kingdom in June is currently the most expensive (average of $1,136). 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

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Alternative routes for Idaho to United Kingdom

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Idaho to United Kingdom

Discover the top 6 airlines that operate flights from Idaho to United Kingdom. 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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$583Average$976FlexibilityNo cancel feeOn-time71%
KLMCheapest$656Average$967FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$670Average$1,102FlexibilityNo cancel feeOn-time69%
Virgin AtlanticCheapest$676Average$858FlexibilityNo cancel feeOn-time72%
DeltaCheapest$698Average$1,141FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$1,097Average$1,354FlexibilityNo cancel feeOn-time76%
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