Cheap flights from Idaho to London from $329
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 4/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Route
Depart
Return
BoiseLondon
BOI Boise Air Term. Gowen Fld - LHR London Heathrow
BOILHR
Boise Air Term. Gowen Fld
Wed 10/21
3:36 pm-3:35 pm
1 stop16h 59m
London Heathrow
Tue 10/27
6:30 am-5:14 pm
2 stops16h 44m
BoiseLondon
BOI Boise Air Term. Gowen Fld - LHR London Heathrow
BOILHR
Boise Air Term. Gowen Fld
Wed 10/21
3:36 pm-3:35 pm
1 stop16h 59m
London Heathrow
Tue 10/27
10:55 am-11:04 pm
1 stop18h 09m
BoiseLondon
BOI Boise Air Term. Gowen Fld - LHR London Heathrow
BOILHR
Boise Air Term. Gowen Fld
Tue 2/23
2:43 pm-7:10 am
2 stops33h 27m
London Heathrow
Fri 2/26
6:35 am-9:15 pm
2 stops21h 40m
BoiseLondon
BOI Boise Air Term. Gowen Fld - LHR London Heathrow
BOILHR
Boise Air Term. Gowen Fld
Tue 3/2
2:43 pm-7:10 am
2 stops33h 27m
London Heathrow
Fri 3/5
6:35 am-7:16 pm
2 stops19h 41m
BoiseLondon
BOI Boise Air Term. Gowen Fld - LHR London Heathrow
BOILHR
Boise Air Term. Gowen Fld
Tue 3/2
5:22 pm-8:30 am
2 stops32h 08m
London Heathrow
Fri 3/5
6:35 am-9:15 pm
2 stops21h 40m
BoiseLondon
BOI Boise Air Term. Gowen Fld - LHR London Heathrow
BOILHR
Boise Air Term. Gowen Fld
Tue 2/9
7:00 am-12:00 pm
1 stop22h 00m
London Heathrow
Wed 2/17
6:45 pm-11:28 am
2 stops23h 43m
BoiseLondon
BOI Boise Air Term. Gowen Fld - LHR London Heathrow
BOILHR
Boise Air Term. Gowen Fld
Sun 3/14
5:40 am-7:05 am
1 stop19h 25m
London Heathrow
Fri 3/19
6:30 am-11:52 pm
2 stops23h 22m
BoiseLondon
BOI Boise Air Term. Gowen Fld - LHR London Heathrow
BOILHR
Boise Air Term. Gowen Fld
Sun 3/14
5:40 am-7:05 am
1 stop19h 25m
London Heathrow
Fri 3/19
6:30 am-11:52 pm
2 stops23h 22m
BoiseLondon
BOI Boise Air Term. Gowen Fld - LHR London Heathrow
BOILHR
Boise Air Term. Gowen Fld
Fri 12/18
11:34 am-10:00 am
1 stop15h 26m
London Heathrow
Tue 12/29
12:20 pm-11:57 pm
1 stop18h 37m
BoiseLondon
BOI Boise Air Term. Gowen Fld - LHR London Heathrow
BOILHR
Boise Air Term. Gowen Fld
Sat 12/19
5:36 am-7:05 am
1 stop18h 29m
London Heathrow
Tue 12/29
12:20 pm-8:17 pm
1 stop14h 57m
See travel insights to London from
How to get the cheapest flight ticket from Idaho to London
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?
The cheapest month to fly to London from Idaho is in November. Flight prices, which tend to average around $699, are often lower during this time because this is during the off-season. The month of March is another great option to travel to London, with average flight prices from Idaho averaging around $818.
Can stopping save me money on Idaho to London flights?
You could potentially save up to 21% on your flight if you consider stops on a Idaho to London flight.
What is the cheapest airline that flies from Idaho to London?
United Airlines, Delta, and KLM are the most popular carriers operating from Idaho to London
What airlines fly to London?
Delta, United Airlines and Virgin Atlantic are the top three most popular airlines that fly to London from Idaho according to our data. Delta is the first choice among our users, with 38% of people opting to fly with this airline when traveling to London. Keep in mind that there are 3 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.
Cheap Idaho to London flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Idaho to London
Frequently asked questions about flying from Idaho to London
When did momondo last update prices for flights from Idaho to London?
Prices for flights from Idaho to London refresh daily.
How many operators does momondo search for flights from Idaho to London?
The number of operators available for flights from Idaho to London is 3 as of October 2026.
How old do you have to be to fly from Idaho to London?
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.
What documentation or ID do you need to fly to London?
The travel and health documents required for your trip to London 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. 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
Compare and see reviews for airlines that fly from Idaho to London with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $600 | Free Cancellation | Rating 7.5 694 reviews | |||
| PriceFrom $639 | Free Cancellation | Rating 7.4 10,328 reviews | |||
| PriceFrom $773 | Free Cancellation | Rating 7.8 8,649 reviews |
Traveling 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?
Yes. All flights to London from Idaho on momondo can be compared and filtered by various policies on offer, including flexible booking.
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?
Yes momondo offers price alerts on flights to London from Idaho. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.