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Cheap flights from Idaho Falls to the United Kingdom from $528

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Idaho Falls to the United Kingdom departing on 3/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Idaho Falls to the United Kingdom

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
5:20 pm - 9:40 am
IDA
-
LHR
33h 20m
1 stop
United Airlines Logo
9:00 am - 9:53 am
LHR
-
IDA
31h 53m
2 stops
$648United Airlines
Tue, Apr 7 - Tue, Apr 14
United Airlines Logo
5:20 pm - 6:30 am
IDA
-
LHR
30h 10m
2 stops
United Airlines Logo
7:25 am - 9:53 am
LHR
-
IDA
33h 28m
2 stops
$652United Airlines
Tue, Apr 7 - Tue, Apr 14
United Airlines Logo
5:20 pm - 8:40 pm
IDA
-
LHR
20h 20m
2 stops
United Airlines Logo
9:00 am - 9:53 am
LHR
-
IDA
31h 53m
2 stops
$653United Airlines
Tue, Apr 7 - Tue, Apr 14
United Airlines Logo
5:20 pm - 12:20 pm
IDA
-
LHR
12h 00m
1 stop
United Airlines Logo
2:05 pm - 1:25 pm
LHR
-
IDA
30h 20m
2 stops
$657United Airlines
Wed, Apr 29 - Tue, May 5
United Airlines Logo
2:30 pm - 12:20 pm
IDA
-
LHR
14h 50m
1 stop
United Airlines Logo
9:30 am - 9:55 am
LHR
-
IDA
31h 25m
2 stops
$659United Airlines
Wed, Apr 29 - Fri, May 8
United Airlines Logo
5:26 pm - 6:30 am
IDA
-
LHR
30h 04m
2 stops
United Airlines Logo
7:30 am - 9:55 am
LHR
-
IDA
33h 25m
2 stops
$663United Airlines
Tue, May 5 - Fri, May 15
United Airlines Logo
6:36 am - 10:25 am
IDA
-
LHR
20h 49m
2 stops
United Airlines Logo
4:20 pm - 1:30 pm
LHR
-
IDA
27h 10m
2 stops
$665United Airlines
Sat, Mar 7 - Tue, Mar 24
Delta Logo
5:47 am - 3:00 pm
IDA
-
LHR
26h 13m
2 stops
Delta Logo
3:20 pm - 6:14 pm
LHR
-
IDA
33h 54m
2 stops
$672Delta
Wed, Apr 29 - Wed, May 6
United Airlines Logo
5:20 pm - 12:20 pm
IDA
-
LHR
12h 00m
1 stop
United Airlines Logo
11:25 am - 3:43 pm
LHR
-
IDA
35h 18m
1 stop
$677United Airlines
Wed, Apr 29 - Wed, May 6
Delta Logo
5:47 am - 5:35 pm
IDA
-
LHR
28h 48m
2 stops
Delta Logo
10:55 am - 6:14 pm
LHR
-
IDA
14h 19m
1 stop
$681Delta
Wed, Apr 29 - Thu, May 7

United Airlines flights from Idaho Falls to United Kingdom

Our best United Airlines deals on Idaho Falls to United Kingdom flight tickets
United Airlines
Apr 7
IDA5:20 pmIdaho Falls Fanning Field
33h 20m
1 stop
LHR9:40 amLondon Heathrow
Apr 14
LHR9:00 amLondon Heathrow
31h 53m
2 stops
IDA9:53 amIdaho Falls Fanning Field
$648
United Airlines
Apr 7
IDA5:20 pmIdaho Falls Fanning Field
30h 10m
2 stops
LHR6:30 amLondon Heathrow
Apr 14
LHR7:25 amLondon Heathrow
33h 28m
2 stops
IDA9:53 amIdaho Falls Fanning Field
$652
United Airlines
Apr 7
IDA5:20 pmIdaho Falls Fanning Field
20h 20m
2 stops
LHR8:40 pmLondon Heathrow
Apr 14
LHR9:00 amLondon Heathrow
31h 53m
2 stops
IDA9:53 amIdaho Falls Fanning Field
$653

Delta flights from Idaho Falls to United Kingdom

Our best Delta deals on Idaho Falls to United Kingdom flight tickets
Delta
Mar 7
IDA5:25 amIdaho Falls Fanning Field
22h 05m
2 stops
LHR10:30 amLondon Heathrow
Mar 24
LHR8:00 pmLondon Heathrow
22h 27m
2 stops
IDA12:27 pmIdaho Falls Fanning Field
$665
Delta
Apr 29
IDA5:47 amIdaho Falls Fanning Field
26h 13m
2 stops
LHR3:00 pmLondon Heathrow
May 6
LHR3:20 pmLondon Heathrow
33h 54m
2 stops
IDA6:14 pmIdaho Falls Fanning Field
$672
Delta
Apr 29
IDA5:47 amIdaho Falls Fanning Field
28h 48m
2 stops
LHR5:35 pmLondon Heathrow
May 7
LHR10:55 amLondon Heathrow
14h 19m
1 stop
IDA6:14 pmIdaho Falls Fanning Field
$681

momondo 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, momondo users made 832,500 searches. Data last updated February 10, 2026.
Use the filters below to find and compare flights from Idaho Falls to the United Kingdom that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Tue 4/7

5:20 pm-9:40 am

1 stop33h 20m

London Heathrow

Tue 4/14

9:00 am-9:53 am

2 stops31h 53m

$648

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Tue 4/7

5:20 pm-6:30 am

2 stops30h 10m

London Heathrow

Tue 4/14

7:25 am-9:53 am

2 stops33h 28m

$652

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Tue 4/7

5:20 pm-8:40 pm

2 stops20h 20m

London Heathrow

Tue 4/14

9:00 am-9:53 am

2 stops31h 53m

$653

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Wed 4/29

5:20 pm-12:20 pm

1 stop12h 00m

London Heathrow

Tue 5/5

2:05 pm-1:25 pm

2 stops30h 20m

$657

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Wed 4/29

2:30 pm-12:20 pm

1 stop14h 50m

London Heathrow

Fri 5/8

9:30 am-9:55 am

2 stops31h 25m

$659

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Tue 5/5

5:26 pm-6:30 am

2 stops30h 04m

London Heathrow

Fri 5/15

7:30 am-9:55 am

2 stops33h 25m

$663

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Sat 3/7

6:36 am-10:25 am

2 stops20h 49m

London Heathrow

Tue 3/24

4:20 pm-1:30 pm

2 stops27h 10m

$665

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Wed 4/29

5:47 am-3:00 pm

2 stops26h 13m

London Heathrow

Wed 5/6

3:20 pm-6:14 pm

2 stops33h 54m

$672

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Wed 4/29

5:20 pm-12:20 pm

1 stop12h 00m

London Heathrow

Wed 5/6

11:25 am-3:43 pm

1 stop35h 18m

$677

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Wed 4/29

5:47 am-5:35 pm

2 stops28h 48m

London Heathrow

Thu 5/7

10:55 am-6:14 pm

1 stop14h 19m

$681

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 resultsSorted by cheapest first
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See travel insights to the United Kingdom from

How to get the cheapest flight ticket from Idaho Falls to United Kingdom

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Idaho Falls Fanning Field to United Kingdom?

United Airlines is the most popular carrier operating from Idaho Falls Fanning Field to United Kingdom

Cheap Idaho Falls to United Kingdom flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Idaho Falls to United Kingdom

Fastest flight time

12h 09m

Direct flights

None
The fastest flight from Idaho Falls to United Kingdom takes 12h 09m
There are no direct flights from Idaho Falls to United Kingdom. There are no popular flight routes from Idaho Falls to United Kingdom.
Search flight deals

  • When did momondo last update prices for flights from Idaho Falls Fanning Field Airport to United Kingdom?

    Prices for flights from Idaho Falls Fanning Field Airport to United Kingdom refresh daily.

  • How many operators does momondo search for flights from Idaho Falls Fanning Field Airport to United Kingdom?

  • How old do you have to be to fly from Idaho Falls Fanning Field Airport to United Kingdom?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Idaho Falls Fanning Field Airport to United Kingdom.

  • What documentation or ID do you need to fly to United Kingdom?

    The travel and health documents required for your trip to United Kingdom can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at United Kingdom. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Idaho Falls to United Kingdom

Compare and see reviews for airlines that fly from Idaho Falls to United Kingdom with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $699Free CancellationRating
7.4
9,262 reviews
Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Idaho Falls to United Kingdom?

Finding the right flight to United Kingdom from Idaho Falls is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to United Kingdom quick and easy, saving you time and money.

Can I find flights from Idaho Falls to United Kingdom with flexible booking policies on momondo?

All flight searches from Idaho Falls to United Kingdom on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Idaho Falls to United Kingdom?

momondo helps you find the best flight between Idaho Falls and United Kingdom by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Idaho Falls to United Kingdom right now. Can momondo alert me if prices change?

Price alerts on flights to United Kingdom from Idaho Falls are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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