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$402+ Cheap flights from Idaho Falls (IDA) 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 9/16. Fares are subject to change and may not be available on all flights or dates of travel.
IDA — LHR
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
1 adult, Economy
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Cheap flight deals from Idaho Falls to United Kingdom

Keep the following information in mind while searching for Idaho Falls to United Kingdom flight deals. Data was last updated July 31, 2025.

Round-trip from

$622
(KLM)

One-way from

$402
(Kiwi.com)

Popular in

December

Cheapest in

November

Average price

$1,248
From Idaho Falls Fanning Field to United Kingdom
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One-way flight from Idaho Falls Fanning Field to United Kingdom
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Highest demand for flights based on searches. 6% potential increase in price ($73 potential increase over avg. RT price).
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Cheapest flight prices on average. 9% potential price decrease ($90 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Idaho Falls to United Kingdom

Cheapest flights from Idaho Falls to United Kingdom
Explore the most affordable flight options available from Idaho Falls to United Kingdom. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.

This Delta deal was found by Cheapflights users on 7/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/231:06 pmIDA - LHR
2 stops17h 04mDelta
Tue 9/309:35 amLHR - IDA
2 stops19h 50mDelta
Deal found 7/30$633
This United Airlines deal was found by Cheapflights users on 7/30. 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.
Tue 9/237:00 amIDA - LHR
2 stops19h 35mUnited Airlines
Tue 9/3011:25 amLHR - IDA
1 stop16h 27mUnited Airlines
Deal found 7/30$650
This Netflights deal was found by Cheapflights users on 7/30. 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 Netflights is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/131:06 pmIDA - LHR
2 stops18h 09mVirgin Atlantic
Sat 9/2012:45 pmLHR - IDA
2 stops16h 40mVirgin Atlantic
Deal found 7/30$691
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/236:13 amIDA - LHR
1 stop17h 37mMultiple Airlines
Sat 9/279:25 pmLHR - IDA
2 stops48h 55mMultiple Airlines
Deal found 7/30$1,383

Cheapflights Fare Finder

 
Customize your flight search to find flights from Idaho Falls 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 July 31, 2025.
Use the filters below to find and compare flights from Idaho Falls to the United Kingdom that are best for you.

Fly from

Idaho Falls

Fly to

United Kingdom

Route

Depart

Return

Price

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Tue 1/20

1:05 pm-10:00 am

1 stop13h 55m

London Heathrow

Fri 1/30

6:20 am-6:15 pm

2 stops18h 55m

$622

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Tue 1/20

6:45 pm-6:20 am

2 stops28h 35m

London Heathrow

Fri 1/30

6:20 am-10:21 pm

2 stops23h 01m

$626

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Tue 9/23

7:00 am-9:35 am

2 stops19h 35m

London Heathrow

Tue 9/30

11:25 am-8:52 pm

1 stop16h 27m

$650

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Sat 9/13

1:06 pm-2:15 pm

2 stops18h 09m

London Heathrow

Sat 9/20

12:45 pm-10:25 pm

2 stops16h 40m

$691

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Tue 9/16

3:57 pm-10:00 pm

3 stops47h 03m

$402

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Thu 9/18

6:51 pm-6:25 am

2 stops28h 34m

$513

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Wed 9/17

7:00 am-12:20 pm

1 stop22h 20m

$581

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Best time to book a flight from Idaho Falls to United Kingdom

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

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

Currently, November is the cheapest month in which you can book a flight from Idaho Falls to United Kingdom (average of $661). Flying from Idaho Falls to United Kingdom in June is currently the most expensive (average of $1,097). 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 IDA to GB?

Find hourly flight availability from Idaho Falls 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 July 31, 2025.

When flying from Idaho Falls to United Kingdom, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 July 31, 2025.
Get a feel of what it's like to fly with Delta, United Airlines, and Virgin Atlantic from Idaho Falls to the United Kingdom by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,981 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,900 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Virgin Atlantic
7.4
Good
655 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Idaho Falls 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 airport do you fly from for flights from Idaho Falls to United Kingdom?

    Located just 3.8 mi from the city center, Idaho Falls Fanning Field (IDA) is the airport most travelers will use when flying to United Kingdom from Idaho Falls.

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Idaho Falls to United Kingdom (average of $661). Flying from Idaho Falls to United Kingdom in June is currently the most expensive (average of $1,097). 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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Top airline flying from Idaho Falls to United Kingdom

Discover the top airline that operate flights from Idaho Falls 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 July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$699Average$1,013FlexibilityNo cancel feeOn-time69%

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