$309 Find Cheap Flights from Boise to the United Kingdom - Compare and Save

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 10/6. 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
London2 stops$871
Edinburgh
Edinburgh2 stops$862
Manchester
Manchester2 stops$920
London
London2 stops$871
Edinburgh
Edinburgh2 stops$862
Manchester
Manchester2 stops$920

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

Sun, Nov 1 - Wed, Nov 11
American Airlines Logo
1:29 pm - 2:25 pm
BOI
-
EDI
17h 56m
2 stops
American Airlines Logo
11:25 am - 10:03 pm
EDI
-
BOI
17h 38m
2 stops
$862American Airlines
Sun, Nov 1 - Wed, Nov 11
Multiple Airlines Logo
1:51 pm - 3:15 pm
BOI
-
EDI
18h 24m
2 stops
Multiple Airlines Logo
11:05 am - 11:37 pm
EDI
-
BOI
19h 32m
2 stops
$864Multiple Airlines
Tue, Sep 15 - Mon, Sep 28
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
$871Scandinavian Airlines
Tue, Sep 8 - Tue, Sep 22
Scandinavian Airlines Logo
12:14 pm - 4:00 pm
BOI
-
LHR
20h 46m
2 stops
Scandinavian Airlines Logo
6:40 am - 6:40 pm
LHR
-
BOI
19h 00m
2 stops
$872Scandinavian Airlines
Tue, Sep 8 - Tue, Sep 22
Scandinavian Airlines Logo
12:14 pm - 4:00 pm
BOI
-
LHR
20h 46m
2 stops
Scandinavian Airlines Logo
6:40 am - 6:40 pm
LHR
-
BOI
19h 00m
2 stops
$873Scandinavian Airlines
Sun, Nov 1 - Wed, Nov 11
United Airlines Logo
5:44 pm - 7:55 am
BOI
-
EDI
31h 11m
2 stops
United Airlines Logo
9:25 am - 4:59 pm
EDI
-
BOI
38h 34m
3 stops
$874United Airlines
Sun, Nov 1 - Wed, Nov 11
United Airlines Logo
5:44 pm - 7:55 am
BOI
-
EDI
31h 11m
2 stops
United Airlines Logo
9:25 am - 4:59 pm
EDI
-
BOI
38h 34m
3 stops
$875United Airlines
Wed, Oct 7 - Tue, Oct 13
Delta Logo
4:00 pm - 3:00 pm
BOI
-
LHR
16h 00m
1 stop
Delta Logo
6:30 am - 6:33 pm
LHR
-
BOI
19h 03m
2 stops
$875Delta
Mon, Aug 3 - Wed, Aug 19
Finnair Logo
3:10 pm - 10:30 am
BOI
-
LHR
12h 20m
1 stop
Finnair Logo
8:55 am - 10:11 pm
LHR
-
BOI
20h 16m
1 stop
$886Finnair
Wed, Sep 16 - Tue, Sep 22
Delta Logo
2:11 pm - 11:50 am
BOI
-
EDI
14h 39m
1 stop
Delta Logo
9:00 am - 11:59 pm
EDI
-
BOI
21h 59m
2 stops
$934Delta
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 $399 (return) on average. On the other hand, the most expensive months are May and February, when the average cost of round-trip tickets is $687 and $627 respectively.

Good to know

Low seasonJanuary
Cheapest flight$309
Best time to beat the crowds but there is an average 51% increase in price.
Most popular time to fly and prices are also 14% 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 3 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.
7.8
DeltaOverall score based on 8452 reviews
8.5Crew
8.1Boarding
7.8Entertainment
7.8Comfort
7.2Food
Airline reviews

The crew were efficient. The pilots seemed professional. It was a bit chilly in our seats. The sheet provided weren’t very helpful.

8.0 ExcellentAnonymous, May 2026
ATL - LHR
Read more Delta reviews

The crew were efficient. The pilots seemed professional. It was a bit chilly in our seats. The sheet provided weren’t very helpful.

The Boarding process was great. Particularly since my wife and I require assistance. The flight attendants were amazing. We travel frequently; they honestly were a cut above. 😀

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.

Plenty of leg room, temperature was great and staff was excellent. Would do it more often.

Passengers need to check in big baggage instead of bringing on the plane. That cause inconvenience for everyone. Otherwise flight was good.

My husband is very tall and we generally fly Delta Comfort. We used our companion benefit, and our seats were coach and extremely uncomfortable........ horrid even

I specifically picked out right side aisle seats because my left knee sometimes needs to be stretched. But my experience this trip was that the seats were shuffled and I lost those assigned seats, resulting in me having to sit in a much less desirable position for my comfort.

Other airlines were canceling flights but Delta got us home. Crew was friendly and professional. It would have been nice to have had a little more notice about the delays because we had already arrived at the airport when the first of several delays were communicated but I understand that storm forecasting isn’t simple and we were grateful that Delta didn’t just cancel the flight.

On time departure, smooth trip, flight attendant told through passengers the gate we would arrive at and the gate our outbound flight was departing from. Early arrival

On time departure and early arrival. Kind and professional service from flight crew

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

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

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 crew was excellent as ever on Virgin. The special meal was poor unfortunately. More significantly when we arrived at Manchester Airport there was no air bridge provided and we had to exit the plane down a rickety stair case. This is unacceptable for a transatlantic flight. Whilst I understand that this is the airport’s fault at the end of the day the airline is responsible for our transportation and needs to do something.

Super friendly and helpful staff, from check-in desk to cabin crew.

Good overall. Cannot fault the airlines. I have had better entertainment systems before ie ice in Emirates but it was not too bad. Food was decent and staff were friendly.

Miami airport needs more thorough signage. It was a long walk from my transport point to the check in desk,

Flight took off an hour late. Had to stay on the tarmac for half an hour after landing. Both annoying.

The crew was very good. However, the equipment was a bit dated. Some of the electronics were not working. To top it, three bags didn’t arrive with me. Two of them were delivered a day later. I’m still waiting for the third bag, I was so looking forward to this virgin Atlantic flight, but, I am disappointed.

My only complaint is that the pocket in front of me was ripped and my things, like iPad and airline magazines, kept slipping to the floor.

I was very disappointed with my experience at the United Airlines baggage check. The representative was rude and unhelpful. I was required to remove approximately 1.5 pounds from my two checked bags, even though it was a very small amount over the limit. The interaction was unnecessarily unpleasant, and I expected much better customer service. I hope United will review this incident and provide additional customer service training to its staff.

Read the fine print. This was my flight home. I booked my flight for the quickest way home. Had a carry-on and a personal item. Same as my outbound flight. Apparently I needed to pre-pay extra for my carry-on. When I checked in, I was told that I had to check it. I said I’ll pay for it, and was told that this wasn’t an option anymore. They said I still had to pay $50 to check my carry-on. I told them I’ll pay whatever to just carry it in as intended. I was not allowed, so eventually I paid $50 to check my carry-on under a plane that was half full, with overhead compartments that were even less full. My white carry-on suitcase was practically destroyed getting from Idaho falls to Denver to Orange County. The low price air fair was a bait and switch. Got me to the gate, made me pay extra, then didn’t even allow me to pay for a carry on. Not to mention that I paid the $8 for WiFi that didn’t work. All to get my suitcase destroyed. I don’t think I’m going to even keep my Untied mileage plus membership and card. Apparently, membership does not have its privileges for this one.

Cree was organized and pleasant. Plane had good seating but as it’s a shuttle toilets hadn’t been thoroughly cleaned (eg. bins too full)

Delayed - weather wasn't bad at either end. Also sat on tarmac in ORD.

All good flight was 35 minutes early when arriving in Edinburgh

During landing. 2 crew members passed 3 times by my lane and didn't notice that people in front of us had their site to the furthermore reclined... That was uncomfortable and could have been dangerous.

Once boarding started it was pretty quick. Food was inedible; cold and salty..

Some flight attendants were great others were cranky. Seats were very tight and sitting on an aisle was very hard as the carts and people walking constantly bumped shoulder and arm.

Very small cramped plane for an international flight. Everything else was good, but it was maybe the smallest comfort-wise I've ever been on for longer than 3-4 hours and the trip was 7.5

United Airlines was fantastic, however, UnderPricer was a nightmare. I got to the airport 4 hours before my flight. We are moving to New Zealand so had quite a bit of baggage (16 checked items) and so wanted to have plenty of time to get everything taken care of properly. When I went to check in they (United) could only find a ticket for me. The 5 tickets for my children were never officially ticketed. I called Underpricer and they told me it was United's fault and United told me that Underpricer just needs to reissue the tickets, but they refused to. I asked the Underpricer agent to transfer me to his supervisor as I was not getting the help I needed. He told me the supervisor was busy but that he would call me back in 30 minutes. 30 minutes came and went with no phone call. After an hour I called Underpricer back but they would not let me talk to the person I had talked to before, just told me that he was talking with the supervisor and technical support. I called again an hour later, was told the same thing. I tried again later, with only about 30 minutes until my flight was scheduled to leave (meaning I had been at the airport for more than 3 hours with my 5 children trying to get ticketed and board the flight). Also, my husband had moved to New Zealand 3 months prior, I haven't seen him in 3 months, my children hadn't seen their dad in 3 months, we were all extremely eager to get on that flight and get to New Zealand. The situation with the tickets did not get resolved until after it was too late to check our luggage and board our flight. We were devastated. My 11 year old son was in tears at not being able to be on his way to see his dad. Thankfully we were rebooked for the next evening, but that night it felt devastating. We'd been at the airport for 4 hours waiting. My in-laws waited with me and then helped me reload all our baggage and took us home to stay with them for the night. On the newly booked flights we could not sit together - my children were spread throughout the plane. So, even though I had paid extra to select our seats after buying my seats from Underpricer only two of us were able to sit together (thankful that my 11 year old wasn't all by himself, but not happy that my 14 & 16 year old daughters were seated by strangers). I really feel that Underpricer should refund me what I paid for the seating ($120 USD). It was a very frustrating situation and I plan on never using Kayak or Underpricer ever again.

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

Information on your arrival and departure airports