$325 Find Cheap Flights from Boise to the United Kingdom

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boise to the United Kingdom departing on 2/1. 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.
1 adult
1 adult, Economy, 0 bags

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Cheap Flights from Boise to the United Kingdom

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
London
London1 stop$601
Edinburgh
Edinburgh2 stops$622
Manchester
Manchester2 stops$672
Birmingham
Birmingham2 stops$662
London
London1 stop$601
Edinburgh
Edinburgh2 stops$622
Manchester
Manchester2 stops$672
Birmingham
Birmingham2 stops$662

Book Cheap Boise to the United Kingdom Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boise to the United Kingdom that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Boise to the United Kingdom

Sat, Jan 31 - Sat, Feb 7
Lufthansa Logo
8:15 am - 7:55 am
BOI
-
LHR
16h 40m1 stop
Lufthansa Logo
6:35 am - 7:13 pm
LHR
-
BOI
19h 38m2 stops
$601Lufthansa
Sat, Jan 31 - Sat, Feb 7
Lufthansa Logo
12:19 pm - 3:50 pm
BOI
-
LHR
20h 31m2 stops
Lufthansa Logo
6:35 am - 7:13 pm
LHR
-
BOI
19h 38m2 stops
$609Lufthansa
Fri, Jan 30 - Fri, Feb 6
Lufthansa Logo
8:15 am - 5:55 am
BOI
-
LHR
14h 40m1 stop
Lufthansa Logo
8:15 pm - 7:13 pm
LHR
-
BOI
29h 58m2 stops
$610Lufthansa
Tue, Feb 17 - Tue, Feb 24
Lufthansa Logo
2:40 pm - 9:40 am
BOI
-
LHR
12h 00m1 stop
Lufthansa Logo
8:30 am - 9:32 pm
LHR
-
BOI
20h 02m2 stops
$611Lufthansa
Tue, Feb 17 - Thu, Feb 26
Virgin Atlantic Logo
1:51 pm - 11:55 am
BOI
-
LHR
15h 04m1 stop
Virgin Atlantic Logo
10:45 am - 11:05 pm
LHR
-
BOI
19h 20m1 stop
$621Virgin Atlantic
Tue, Feb 17 - Thu, Feb 26
United Airlines Logo
5:24 pm - 9:20 pm
BOI
-
LHR
20h 56m2 stops
United Airlines Logo
11:10 am - 11:48 pm
LHR
-
BOI
19h 38m2 stops
$622United Airlines
Thu, Feb 5 - Tue, Feb 10
United Airlines Logo
6:10 am - 7:55 am
BOI
-
EDI
18h 45m2 stops
United Airlines Logo
9:25 am - 9:52 pm
EDI
-
BOI
19h 27m2 stops
$622United Airlines
Thu, Apr 9 - Sun, Apr 19
Delta Logo
5:50 am - 7:05 am
BOI
-
EDI
18h 15m2 stops
Delta Logo
9:00 am - 10:28 pm
EDI
-
BOI
20h 28m1 stop
$743Delta
Wed, Mar 4 - Wed, Mar 11
Icelandair Logo
11:54 am - 10:55 am
BOI
-
LGW
16h 01m2 stops
Icelandair Logo
11:55 am - 10:40 pm
LGW
-
BOI
16h 45m2 stops
$878Icelandair
Mon, Jan 26 - Wed, Feb 4
Icelandair Logo
11:35 am - 10:55 am
BOI
-
LGW
16h 20m2 stops
Icelandair Logo
11:55 am - 9:05 pm
LGW
-
BOI
16h 10m2 stops
$890Icelandair
Booking Insights

KAYAK's insights & trends for Boise to the United Kingdom flights

Get data-powered insights and trends into flights from Boise to the United Kingdom to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Boise to the United Kingdom?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boise to the United Kingdom, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Boise to the United Kingdom is October, when tickets cost $662 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of round-trip tickets is $1,458 and $1,253 respectively.

Good to know

Low seasonJanuary
Cheapest flight$325
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly and prices are also 17% lower on average.
Flight from Boise to London Heathrow Airport

FAQs - booking United Kingdom flights

  • How does KAYAK find such low prices on flights from Boise to the United Kingdom?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Boise to the United Kingdom.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Boise to the United Kingdom?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Boise to the United Kingdom is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Boise to the United Kingdom?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Boise to the United Kingdom with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boise to the United Kingdom?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Boise to the United Kingdom up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines serving from Boise to the United Kingdom

 
Need help choosing which airline to fly with from Boise to the United Kingdom? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8017 reviews
7.9Comfort
8.5Crew
8.1Boarding
7.8Entertainment
7.2Food
Airline reviews

DTW line is too long. The flights from DTW to BWI are always delayed for unknown reasons.

2.0 MediocreZhenyu, Jan 2026
DTW - BWI
Read more Delta reviews

DTW line is too long. The flights from DTW to BWI are always delayed for unknown reasons.

Delta canceled our flight and we had to scramble to find another airline to get home. Phoenix is not a delta hub so they didn’t have another plane. It would have been a red eye though Salt Lake City. Getting in at 5am. No bueno.

This flight was no comparison to our prior flight. I'm thinking it all has to do with the age of the aircraft.

This flight was a first class choice and left much to be desired. Seat backs on seats were falling apart and torn. Seats actually didn't come to a "full & upright position". Pull out table was sprung. Not any significant leg room. All in all we were on an obviously older plane and felt overcharged for what we received as first class.

A 12 hour flight during the day with one real meal service - are you kidding? Also the breakfast was one of the worst and not what was listed

Flight was delayed several times. At one point, they "pulled back" 15 minutes from the delayed boarding and sent a text saying we would board sooner than previously advised. The flight then was delayed again. And when we boarded, there was an unspecified technical issue which had us waiting in the plane for about an hour.

Delta is a good airline. I've never had an issue with Delta. I'll continue to fly with them until they show me that I shouldn't.

The only thing nice I can say is the flight crew was really nice and apologetic about the situation. They shared as much information as they had and advised us on what we could do about missing connecting flights. The boarding process was so slow. The gate agent was working by herself and should have had someone working with her. It took almost an hour to board because she was trying to board a full flight of people and provide customer service to everyone who was flying standby and/or had questions. It was really chaotic. This didn't help the fact that we were delayed and folks were missing connections the longer it took.

The gate attendants and the crew were terrible. Because of high winds, they needed to carry more fuel, so they had to get volunteers to take the next flight at 6 am the next day. They did a terrible job of it - our flight ended up taking off just under 3 hours of the scheduled time. I hope to never fly Delta again.

Did not realize internet screen was hidden between seats and no info printed!!!!

Food has been disappointing in both legs of flight to india

Great staff great experience, made a 2 hour delay very bearable

Great staff, great experience, made a 2 hour delay very bearable

Food was the worst I’ve had on a VA flight. Normally it’s a lot better

I was my pleasure to fly virgin on my birthday for my first solo trip ever 🫶🏼

These are one of the older seat arrangements facing away from the windows! Not particularly convenient sets. No storage spaces. NO COAT HANGING HOOKS. Inconvenient business class seat compared to any other airlines of similar class. Staff are excellent! Extremely professional, friendly. Food is good too.

Overall, flight was excellent but check in was very slow for Premium Economy. Economy queue was shorter but we weren't allowed to use it.

The staff was not very polite but the flight was very very nice and comfortable and the entertainment was great

Great crew - old style upper class seats on the older fleet now feels dated

Premium economy more comfortable than economy, but not by much. Did was awful, do not try the omelette. Flight crew were helpful. Flight was delayed by over an hour. Overall but bad, arrived safely and thank God.

Perfect flight. Smooth flight. Arrived 20 minutes early at destination. Excellent service.

The flights were on time which was great give. It was holiday travel season and there’d been some weather issues. The only complaint and this is every time with United is the terrible seat design. The head rest is not built for comfort and having my neck bent forward for a cross country trip reminded me while I try not to take United flights as a rule.

I’m so sorry, I can’t remember her name, I believe it was Dimpti. She was stellar, also a mature Asian flight attendant, lots of flowers in her hair, just as amazing! But literally the crew was AWESOME . Only downside is there weren’t any charging outlets. Maybe I needed to ask a flight attendant , but it would’ve been nice to have one easily accessible.

The flight was delayed by two de-icings. The seatbelt did not work correctly. It did not stay tight.

Everything was absolutely wonderful from check in to baggage claim. Staff was very professional and sweet. Will definitely recommend United to family and friends.

Aircraft was noisy, old and never dimmed the lights on a night flight even on business class! I flew 17 times on United and probably another 40 on other airlines United USA /Europe flights were the worst to include luggage delayed once going to europe and once coming back

Check how old the airframe is, some older ones have inoperable seat back entertainment or power.

Sitting on the runway after we land for almost two hours! Not sure if we should blame United or Just Dumpy Vance.

Hotter than Hades in August. Why, why do crews think that in the winter when we are already dressed for cold weather we need a cabin that is 82 degrees. Even the vents were blowing hot air.

Unbelievably poor service from flight attendants. They didn’t even do water service on a four hour flight. Just disrespectful.

Disliked having to wait a little longer to disembark from the plan when we landed in London

Food should be better quality. Video screens have poor resolution and the library of movies is poor. The other airlines are much better.

The trip was smooth but the crew were very abrupt, snatching things before finished and being quite snappy when asked questions.

My wife and I love to travel, so we fly a lot. We've already logged 381,075 miles and with practically every major airline. But this flight was very disappointing. It started off well, with no delays and a new plane. But when lunchtime approached, all that good impression was ruined. Instead of white tablecloths, we were offered small, dark placemats, which, as it turned out, were perfectly adequate for the food. All the food offered—and my wife and I only took fish, and the meat—was not just bad, it was downright disgusting and not heated enough. The same applies to the appetizers. This was the first time in many years of traveling that we've been offered such disgusting food.

Lost luggage stuck no clothes and no word after 2 days leaving on cruise no stuff or clothes

Don’t know they cancelled the flight day before I was to leave. They sent a email at 9:00 pm at night saying they cancelled. That is the smooth way to say we don’t want your business! I think they didn’t have enough people booking so they cancelled the flight! It’s all about the money anymore there is no honesty in business.

The flight was canceled 3 hours after original take off time

Pathetic check in experience at JFK. Everything is self check in. Not enough staff present to help with when the check in process or the kiosk gets stuck. Staff present not welcoming or pleasant at all. On the other hand the NY based flight crew was great. Courteous and friendly throughout the flight. Special meals leave a lot to be desired. Kids meals should be made available when kids are flying and same goes for special kids meals too.

Flight was full, and would have preferred an aisle seat, but due to getting a late ticket ,the seat I had was adequate. The flight crew were very help full and hard working. Food and drink were excellent for the 11hr flight. Overall I was pleased with flight, and would recommend British Airways again.

The chicken adobo was a little too spicy but good otherwise. My personal opinion. Movie selection could be improved, too many horror movies. Could add a few more chick flicks! The flight was bumpy at times. We arrived a little early too! Flight attendants friendly.

Problems checking in both on the laptop and on the app. No free seating available at check-in as advertised - must pay for EVERY seat between $23 and $75. No way to cancel seat choice. App menus and site menus are not responsive, and some items are impossible to find. Crew and mobile assistance are friendly and helpful.

Food - Non-Existent. You pay for everything. It is strictly Pay-to-Play!

If there was a disclaimer regarding food service or lack thereof, l missed it. If l had known l would have prepared better. Same with transferring at Reykjavik. No information about disembarking via stairs into rain, slush and puddles deep enough to swallow a foot. After being treated to haute cuisine restaurants and warm inviting environment during the flight, the airport is, let’s be kind, disappointing. Plane was comfortable, Airbus, staff were welcoming enough. I would likely try the route again. Maybe have a night and day in Iceland. Maybe not.

Iceland air transfer was bad. They lost my luggage and I just received it 11/1

The boarding process seem to take longer than necessary, resulting in a 20+ minute delay

It was too cold in the plane my feet froze

Service was excellent. Food and drinks were very good except for a greasy lump of a donut at the end of the flight that left us both feeling internally disgusted.

Handling our luggage was the biggest issue - they lost it and we got it almost 3 days later. Really threw off the beginning of our trip and we really had to change our itinerary accordingly.

Seat was hard and uncomfortable and the temperature too warm and uncomfortable.

Best smelling onboard bathrooms ever. Even after use the whole flight. Biggest overhead bins. Most legroom in economy class. Great Icelandiic music. Really nice staff. Icelandair is awesome! (Don’t fly Air Canada! During the strike they lied about no flights available (I booked this flight myself) and hid the process to get money back on their website by obscuring menu titles, then made it difficult and time consuming to fill out. I’m Canadian. Don’t trust Air Canada!

Everything you need to know for your flight from Boise to the United Kingdom

Information on your arrival and departure airports