£102+ Cheap flights from Idaho Falls

This is the cheapest return flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 31/1. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
IDA — LHR
17 Jan — 24 Jan1
1 adult
1 adult, Economy, 0 bags

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Cheapest flights from Idaho Falls
Explore the most affordable flight options available from Idaho Falls. Find the lowest fares based on data from user searches, with prices last updated on 18 December 2025.

Thu 15/116:19IDA - LHR
2 stops32h 11mUnited Airlines
Wed 28/106:35LHR - IDA
2 stops34h 21mUnited Airlines
Deal found 16/12£464
Fri 30/113:15IDA - LHR
1 stop13h 45mMultiple Airlines
Fri 6/206:20LHR - IDA
2 stops18h 31mMultiple Airlines
Deal found 16/12£469
Thu 15/110:51IDA - LHR
2 stops17h 24mUnited Airlines
Thu 22/106:35LHR - IDA
2 stops21h 39mUnited Airlines
Deal found 17/12£473
Thu 15/114:40IDA - LHR
1 stop12h 00mUnited Airlines
Mon 19/113:50LHR - IDA
2 stops51h 06mUnited Airlines
Deal found 16/12£478
Thu 15/114:07IDA - LHR
1 stop12h 53mMultiple Airlines
Wed 28/116:30LHR - IDA
1 stop28h 07mMultiple Airlines
Deal found 16/12£485
Tue 7/413:45IDA - LHR
1 stop17h 40mMultiple Airlines
Tue 14/410:05LHR - IDA
1 stop18h 51mMultiple Airlines
Deal found 17/12£503
Tue 7/405:40IDA - LHR
1 stop21h 10mDelta
Tue 14/411:45LHR - IDA
2 stops17h 29mDelta
Deal found 17/12£506
Mon 4/508:24IDA - LHR
1 stop19h 26mMultiple Airlines
Mon 11/510:05LHR - IDA
1 stop18h 51mMultiple Airlines
Deal found 16/12£541

Find flights from Idaho Falls within your budget

 
Find flights departing from Idaho Falls that match your specified budget. Filter results by price range, allowing you to narrow down options and find flights that fit within your financial constraints. Please note that the search results are based on data from user searches, with fares last updated on 18 December 2025. In the last 7 days, Cheapflights users made a total of 858,174 searches

Fly to

Heathrow

Route

Depart

Return

Price

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Thu 15/1

16:19-07:30

2 stops32h 11m

London Heathrow

Wed 28/1

06:35-09:56

2 stops34h 21m

£464

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Fri 30/1

13:15-11:40

2 stops15h 25m

London Heathrow

Fri 6/2

06:20-17:51

2 stops18h 31m

£469

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Sat 31/1

14:40-09:40

1 stop12h 00m

London Heathrow

Sat 7/2

06:35-09:56

2 stops34h 21m

£470

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Thu 15/1

10:51-09:40

1 stop15h 49m

London Heathrow

Thu 22/1

06:35-21:14

2 stops21h 39m

£470

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Thu 15/1

06:30-09:40

1 stop20h 10m

London Heathrow

Mon 19/1

16:40-09:56

2 stops48h 16m

£478

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Thu 15/1

14:07-10:00

1 stop12h 53m

London Heathrow

Wed 28/1

16:30-13:37

1 stop28h 07m

£485

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Sat 31/1

14:07-12:15

1 stop15h 08m

London Heathrow

Sat 7/2

14:25-22:36

1 stop15h 11m

£491

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Thu 5/2

18:58-12:50

3 stops34h 52m

£256

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Fri 6/2

21:20-12:50

2 stops56h 30m

£269

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Thu 5/2

10:51-10:25

2 stops16h 34m

£298

Flights are sorted by cheapest return flights first.

Deals found on 17/12

Showing 1-10 of 12 results
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Best time to book a flight from Idaho Falls

Have a flexible travel schedule? Discover the best time to fly from Idaho Falls with our price prediction graph.
Estimated return 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 Falls

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

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

Currently, March is the cheapest month in which you can book a flight from Idaho Falls (average of £518). Flying from Idaho Falls in June will prove the most costly (average of £843). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

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Direct flights from Idaho

Book a direct flight from one of these other cities located in Idaho.
Direct flights from Boise

Related info for your journey

Access useful and relevant information related to your journey from Idaho Falls. This can include details such as airport transportation, visa requirements, travel insurance, luggage regulations, and any other information that can ensure a smooth and hassle-free travel experience. Please note that the information is based on general guidance and may need to be verified with official sources. Data last updated 18 December 2025.

  • What are the most popular destinations to fly to from Idaho Falls?

    This month, the top selected destinations from Idaho Falls are Las Vegas, Seattle, Portland. Throughout the year, Las Vegas, Seattle, Denver are some of the top choices made by users flying from Idaho Falls.

  • What is the cheapest month to fly from Idaho Falls?

    At the present moment the cheapest month to fly from Idaho Falls is currently March; with June being the most expensive. Prices will vary depending on multiple factors such as booking in advance, airline and departure airports and times.

  • How does Cheapflights help users find flights from Idaho Falls?

    Cheapflights makes it easy to find flights from Idaho Falls by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

  • Why should you use Cheapflights to find cheap flight tickets from Idaho Falls?

    Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Idaho Falls for you. Better yet — we are completely free to use.

  • Can Cheapflights find flights from Idaho Falls with no change fees?

    Need flexible booking options for your flight from Idaho Falls ? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

  • Can Cheapflights notify me if prices for flights from Idaho Falls become cheaper?

    Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and use a valid email address to enable the Price Alerts feature. That’s it!

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How does Cheapflights help users find flights from Idaho Falls?

Cheapflights makes it easy to find flights from Idaho Falls by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Idaho Falls?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Idaho Falls for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Idaho Falls with no change fees?

Need flexible booking options for your flight from Idaho Falls ? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Idaho Falls become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and use a valid email address to enable the Price Alerts feature. That’s it!

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