Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Idaho to London from $330

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 to London departing on 9/30. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Idaho to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Lufthansa Logo
2:40 pm - 7:35 pm
JAC
-
LHR
45h 55m
2 stops
Lufthansa Logo
9:30 am - 9:02 pm
LHR
-
JAC
18h 32m
2 stops
$782Lufthansa
Sat, Nov 14 - Tue, Nov 17
United Airlines Logo
10:51 am - 9:40 am
JAC
-
LHR
15h 49m
1 stop
United Airlines Logo
6:35 am - 9:02 pm
LHR
-
JAC
21h 27m
2 stops
$816United Airlines
Sun, Nov 15 - Tue, Nov 17
United Airlines Logo
7:00 am - 7:10 am
JAC
-
LHR
17h 10m
2 stops
United Airlines Logo
6:35 am - 9:02 pm
LHR
-
JAC
21h 27m
2 stops
$819United Airlines
Sun, Nov 15 - Tue, Nov 17
Multiple Airlines Logo
1:46 pm - 1:45 pm
IDA
-
LHR
16h 59m
1 stop
Multiple Airlines Logo
8:15 am - 9:42 pm
LHR
-
IDA
20h 27m
2 stops
$866Multiple Airlines
Wed, Oct 7 - Tue, Oct 13
Scandinavian Airlines Logo
12:14 pm - 5:40 pm
BOI
-
LHR
22h 26m
2 stops
Scandinavian Airlines Logo
7:30 pm - 6:40 pm
LHR
-
BOI
30h 10m
2 stops
$872Scandinavian Airlines
Tue, Sep 15 - Mon, Sep 28
Iberia Logo
5:25 am - 12:00 pm
GEG
-
LHR
22h 35m
1 stop
Iberia Logo
7:40 pm - 8:55 pm
LHR
-
GEG
33h 15m
2 stops
$875Iberia
Wed, Nov 18 - Wed, Nov 25
Alaska Airlines Logo
12:44 pm - 3:05 pm
GEG
-
LHR
18h 21m
1 stop
Alaska Airlines Logo
2:45 pm - 11:39 am
LHR
-
GEG
27h 54m
1 stop
$876Alaska Airlines
Mon, Oct 12 - Wed, Oct 28
Alaska Airlines Logo
2:16 pm - 3:05 pm
BOI
-
LHR
17h 49m
1 stop
Alaska Airlines Logo
5:00 pm - 11:58 pm
LHR
-
BOI
13h 58m
1 stop
$884Alaska Airlines
Tue, Sep 29 - Wed, Oct 7
Scandinavian Airlines Logo
12:14 pm - 4:00 pm
BOI
-
LHR
20h 46m
2 stops
Scandinavian Airlines Logo
2:20 pm - 6:39 pm
LHR
-
BOI
35h 19m
2 stops
$896Scandinavian Airlines
Sat, Sep 26 - Sat, Oct 3
Multiple Airlines Logo
3:24 pm - 11:15 am
BOI
-
LHR
12h 51m
1 stop
Multiple Airlines Logo
10:30 am - 10:57 pm
LHR
-
BOI
19h 27m
1 stop
$902Multiple Airlines
Wed, Oct 7 - Tue, Oct 13

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Scandinavian Airlines flights from Idaho to London Heathrow Airport

Our best Scandinavian Airlines deals on Idaho to London Heathrow Airport flight tickets
Scandinavian Airlines
Sep 15
BOI12:14 pmBoise Air Term. Gowen Fld
22h 26m
2 stops
LHR5:40 pmLondon Heathrow
Sep 28
LHR7:30 pmLondon Heathrow
30h 10m
2 stops
BOI6:40 pmBoise Air Term. Gowen Fld
$872
Scandinavian Airlines
Sep 26
GEG1:00 pmSpokane
19h 00m
2 stops
LHR4:00 pmLondon Heathrow
Oct 9
LHR10:20 amLondon Heathrow
38h 38m
2 stops
GEG4:58 pmSpokane
$897
Scandinavian Airlines
Sep 15
BOI10:34 amBoise Air Term. Gowen Fld
28h 06m
2 stops
LHR9:40 pmLondon Heathrow
Sep 28
LHR7:50 pmLondon Heathrow
29h 50m
3 stops
BOI6:40 pmBoise Air Term. Gowen Fld
$980

American Airlines flights from Idaho to London Heathrow Airport

Our best American Airlines deals on Idaho to London Heathrow Airport flight tickets
American Airlines
Aug 12
IDA12:06 pmIdaho Falls Fanning Field
13h 54m
1 stop
LHR9:00 amLondon Heathrow
Aug 19
LHR8:15 amLondon Heathrow
20h 05m
2 stops
IDA9:20 pmIdaho Falls Fanning Field
$919
American Airlines
Aug 3
BOI3:54 pmBoise Air Term. Gowen Fld
13h 56m
1 stop
LHR12:50 pmLondon Heathrow
Aug 19
LHR8:15 amLondon Heathrow
20h 56m
2 stops
BOI10:11 pmBoise Air Term. Gowen Fld
$920
American Airlines
Sep 23
GEG6:00 amSpokane
16h 20m
1 stop
LHR6:20 amLondon Heathrow
Oct 14
LHR8:55 amLondon Heathrow
19h 48m
1 stop
GEG8:43 pmSpokane
$931

momondo Fare Finder

 
Customize your flight search to find flights from Idaho to London Heathrow Airport 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 July 2, 2026.
Use the filters below to find and compare flights from Idaho to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

JacksonLondon

JAC - LHR

JACLHR

Jackson Hole

Sat 11/14

2:40 pm-7:35 pm

2 stops45h 55m

London Heathrow

Tue 11/17

9:30 am-9:02 pm

2 stops18h 32m

$782

JacksonLondon

JAC - LHR

JACLHR

Jackson Hole

Sun 11/15

10:51 am-9:40 am

1 stop15h 49m

London Heathrow

Tue 11/17

6:35 am-9:02 pm

2 stops21h 27m

$816

JacksonLondon

JAC - LHR

JACLHR

Jackson Hole

Sun 11/15

7:00 am-7:10 am

2 stops17h 10m

London Heathrow

Tue 11/17

6:35 am-9:02 pm

2 stops21h 27m

$819

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Wed 10/7

1:46 pm-1:45 pm

1 stop16h 59m

London Heathrow

Tue 10/13

8:15 am-9:42 pm

2 stops20h 27m

$866

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 9/15

12:14 pm-5:40 pm

2 stops22h 26m

London Heathrow

Mon 9/28

7:30 pm-6:40 pm

2 stops30h 10m

$872

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Wed 11/18

5:25 am-12:00 pm

1 stop22h 35m

London Heathrow

Wed 11/25

7:40 pm-8:55 pm

2 stops33h 15m

$875

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Mon 10/12

12:44 pm-3:05 pm

1 stop18h 21m

London Heathrow

Wed 10/28

2:45 pm-11:39 am

1 stop27h 54m

$876
Quickest round-trip

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 9/29

2:16 pm-3:05 pm

1 stop17h 49m

London Heathrow

Wed 10/7

5:00 pm-11:58 pm

1 stop13h 58m

$884

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Sat 9/26

12:14 pm-4:00 pm

2 stops20h 46m

London Heathrow

Sat 10/3

2:20 pm-6:39 pm

2 stops35h 19m

$896

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Wed 10/7

3:24 pm-11:15 am

1 stop12h 51m

London Heathrow

Tue 10/13

10:30 am-10:57 pm

1 stop19h 27m

$902

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to London from

How to get the cheapest flight ticket from Idaho to London Heathrow Airport

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 month to fly to London Heathrow Airport?

The month of July is, on average, the cheapest month to fly to London Heathrow Airport from Idaho, with most prices found around $577. If you’re not able to fly to London Heathrow Airport in July, then December is your next best option. Flight prices from Idaho to London Heathrow Airport during December average around $596.

Can stopping save me money on Idaho to London Heathrow Airport flights?

You could potentially save up to 20% on your flight if you consider stops on a Idaho to London Heathrow Airport flight.

Cheap Idaho to London Heathrow Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Idaho to London Heathrow Airport

Fastest flight time

12h 15m

Direct flights

None
The fastest flight from Idaho to London Heathrow Airport takes 12h 15m
There are no direct flights from Idaho to London Heathrow Airport. There are no popular flight routes from Idaho to London Heathrow Airport.
Search flight deals

Frequently asked questions about flying from Idaho to London Heathrow Airport

  • When did momondo last update prices for flights from Idaho to London Heathrow Airport?

    Prices for flights from Idaho to London Heathrow Airport refresh daily.

  • How many operators does momondo search for flights from Idaho to London Heathrow Airport?

  • How old do you have to be to fly from Idaho to London Heathrow Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Idaho to London Heathrow Airport.

  • What documentation or ID do you need to fly to London Heathrow Airport?

    The travel and health documents required for your trip to London Heathrow Airport 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 London Heathrow Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Idaho to London Heathrow Airport

Compare and see reviews for airlines that fly from Idaho to London Heathrow Airport with momondo
Airline
Rating
Free Cancellation
Price
Virgin AtlanticPriceFrom $600Free CancellationRating
7.5
690 reviews
Search Virgin Atlantic flights
United AirlinesPriceFrom $631Free CancellationRating
7.4
9,928 reviews
Search United Airlines flights
DeltaPriceFrom $648Free CancellationRating
7.8
8,453 reviews
Search Delta flights

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Hounslow
Gatwick
Milton Keynes
Luton
Hayes
Dover
Crawley
Croydon
Wembley
Stansted
Stratford-upon-Avon
Harrow
Slough
Watford
Ilford
Cobham
Brentwood
Folkestone
Guildford
Romford

Why use momondo?

Why should I use momondo to find a flight deal from Idaho to London?

It is quick and easy to find Idaho to London flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to London that suits you.

Can I find flights from Idaho to London with flexible booking policies on momondo?

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

How can momondo help me find flights from Idaho to London?

Once you have performed a search for Idaho to London flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Of course. momondo tracks the price of Idaho to London flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your London Heathrow Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 8/1
Sat 8/8
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to London

Popular cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo
Flights to London Gatwick Airportfrom $367
Flights to London Stansted Airportfrom $480
Flights to London City Airportfrom $594
Flights to London Luton Airportfrom $485
Flights to Glasgow Intl Airportfrom $496
Flights to Belfast Intl Airportfrom $575
Flights to London Southend Airportfrom $643
Flights to Belfast City Airportfrom $705