£138+ 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 20/11. 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
18 Oct — 25 Oct1
1 adult
1 adult, Economy

Find flights from Idaho Falls

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 September 2025.

Fri 31/1005:00IDA - LHR
2 stops20h 30mUnited Airlines
Fri 7/1113:00LHR - IDA
2 stops35h 46mUnited Airlines
Deal found 16/9£536
Thu 4/1214:45IDA - LHR
1 stop11h 55mUnited Airlines
Thu 18/1211:35LHR - IDA
1 stop16h 39mUnited Airlines
Deal found 18/9£545
Fri 31/1015:50IDA - LHR
1 stop14h 30mMultiple Airlines
Fri 7/1114:25LHR - IDA
1 stop15h 09mMultiple Airlines
Deal found 16/9£558
Sun 2/1116:15IDA - LHR
2 stops19h 20mUnited Airlines
Sat 8/1115:30LHR - IDA
2 stops36h 33mUnited Airlines
Deal found 18/9£624
Sun 2/1105:05IDA - LHR
1 stop23h 15mMultiple Airlines
Sat 8/1110:45LHR - IDA
1 stop14h 28mMultiple Airlines
Deal found 18/9£923

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 September 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

Fri 31/10

05:00-07:30

2 stops20h 30m

London Heathrow

Fri 7/11

13:00-17:46

2 stops35h 46m

£536

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Thu 4/12

07:00-06:40

2 stops16h 40m

London Heathrow

Thu 18/12

11:35-21:14

1 stop16h 39m

£545

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Fri 31/10

15:50-12:20

1 stop14h 30m

London Heathrow

Fri 7/11

14:25-22:34

1 stop15h 09m

£558

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Sun 2/11

16:15-18:35

2 stops19h 20m

London Heathrow

Sat 8/11

15:30-21:03

2 stops36h 33m

£624

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Sun 2/11

05:05-11:20

1 stop23h 15m

London Heathrow

Sat 8/11

10:45-18:13

1 stop14h 28m

£923

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Mon 27/10

15:50-17:30

3 stops43h 40m

£245

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Mon 27/10

13:11-11:35

1 stop16h 24m

£329

Flights are sorted by cheapest return flights first.

Deals found on 16/9

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 £508). Flying from Idaho Falls in June will prove the most costly (average of £826). 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 September 2025.

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

    This month, the top selected destinations from Idaho Falls are Seattle, Las Vegas, Santa Ana. 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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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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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