Cheap flights from Idaho to London Heathrow Airport from £361
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 Heathrow Airport departing on 24/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names, great deals
Big names, great deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customise 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.Find the cheapest flights from Idaho to London
Cheap return flights
Cheap one-way flights
Cheap last-minute flights
Finnair flights from Idaho to London Heathrow Airport
Our best Finnair deals on Idaho to London Heathrow Airport flight tickets
KLM flights from Idaho to London Heathrow Airport
Our best KLM deals on Idaho to London Heathrow Airport flight tickets
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?
In general, October is the cheapest month to fly from Idaho to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £567. The month of September is another great option to travel to London Heathrow Airport, with average flight prices from Idaho averaging around £621.
What is the cheapest day to depart on your flight to London Heathrow Airport?
On average, the least expensive day to fly to London Heathrow Airport from Idaho is on a Monday. momondo users have found tickets for Monday departures for as low as £0. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Thursday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Thursday is £1,132.
What is the cheapest time of day to depart on your flight to London Heathrow Airport?
According to our data, the cheapest time of day to fly to London Heathrow Airport is in the morning. momondo users have found flights departing from Idaho to London Heathrow Airport in the morning for as low as £0. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying at midday when prices are £906 on average. Flights to London Heathrow Airport from Idaho at midday are generally more expensive because this time of day is more convenient for travellers’ schedules.
How far in advance should I book a flight to London Heathrow Airport?
You are more likely to see cheaper flights to London Heathrow Airport from Idaho when booking 4 weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around £703 when searching 4 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Idaho for as low as £620 on momondo.
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
When did momondo last update prices for flights from Idaho to London Heathrow Airport?
Prices for flights from Idaho to London Heathrow Airport are updated daily.
How many operators does momondo search for flights from Idaho to London Heathrow Airport?
As of April 2025, there is 1 operator available to choose from for flights from Idaho to London Heathrow Airport.
How old do you have to be to fly from Idaho to London Heathrow Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, 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 | ||
|---|---|---|---|---|---|
| PriceFrom £459 | Free Cancellation | Rating 7.4 642 reviews |
Travelling to a place near London?
Book flights to London if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Idaho to London?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Idaho to London for you.
Can I find flights from Idaho to London with flexible booking policies on momondo?
momondo does allow users to show only those flights to London from Idaho which offer a flexible booking policy as well as other useful filters and features.
How can momondo help me find flights from Idaho to London?
Once all potential Idaho to London flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.
I’m not ready to book a flight from Idaho to London right now. Can momondo alert me if prices change?
If you are not ready to book a flight from Idaho to London now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to London and let you know when they change.