BOI - LON

$309 Find Cheap Flights from Boise to London - 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 London 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

Save 20% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Everything you should know

Cheapest round-trip
$871
Typical prices: $836-$1,196
Scandinavian Airlines
Tue 9/15Mon 9/28
BOI - LHR • 2 stops
Cheapest one-way
$309
Multiple Airlines
Tue 10/6
BOI - LHR • 3 stops
Top airlines
Cheapest • from $871 (round-trip)
Best reviews • 7.8 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Boise and London. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $564 (round-trip)
Shortest trip • 12h 02m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 32% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to London!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Boise to London (BOI-LON)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boise to London 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 London

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, Aug 25 - Sat, Sep 12
Multiple Airlines Logo
8:03 am - 4:00 pm
BOI
-
LHR
24h 57m
2 stops
Multiple Airlines Logo
6:40 am - 8:24 pm
LHR
-
BOI
20h 44m
2 stops
$873Multiple 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
Sat, Oct 3 - Fri, Oct 16
United Airlines Logo
6:50 pm - 9:00 am
BOI
-
LHR
31h 10m
2 stops
United Airlines Logo
6:50 am - 10:58 pm
LHR
-
BOI
23h 08m
2 stops
$879United Airlines
Sat, Oct 3 - Fri, Oct 16
United Airlines Logo
2:35 pm - 7:25 am
BOI
-
LHR
33h 50m
1 stop
United Airlines Logo
6:50 am - 10:58 pm
LHR
-
BOI
23h 08m
2 stops
$880United Airlines
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
Tue, Oct 20 - Mon, Nov 2
United Airlines Logo
10:30 am - 12:25 pm
BOI
-
LHR
18h 55m
1 stop
United Airlines Logo
11:05 am - 11:06 pm
LHR
-
BOI
43h 01m
2 stops
$888United Airlines
Mon, Aug 17 - Mon, Aug 31
Multiple Airlines Logo
10:52 am - 6:50 pm
BOI
-
LGW
24h 58m
2 stops
Multiple Airlines Logo
10:20 am - 8:33 pm
LGW
-
BOI
17h 13m
2 stops
$932Multiple Airlines
Tue, Oct 20 - Mon, Nov 2
Delta Logo
3:36 pm - 4:00 pm
BOI
-
LGW
17h 24m
2 stops
Delta Logo
10:00 am - 11:49 pm
LGW
-
BOI
20h 49m
2 stops
$964Delta
Booking Insights

KAYAK's insights & trends for Boise to London flights

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

How much is a round-trip flight from Boise to London?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Boise to London departing in September.

What is the cheapest month to fly from Boise to London?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boise to London, 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 London is October, where tickets cost $399 (return) on average. On the other hand, the most expensive months are May and February, where the average cost of round-trip tickets is $687 and $631 respectively.

Good to know

Low seasonJanuary
Cheapest flight$309
Best time to beat the crowds but there is an average 179% increase in price.
Most popular time to fly and prices are also 21% lower on average.
Flight from Boise to London Heathrow Airport

When to book flights from Boise to London

Are your dates flexible? Find out the best times to travel from Boise to London based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Boise to London

  • What is the cheapest flight from Boise to London?

    In the last 5 days, the lowest price for a flight from Boise to London was $309 for a one-way ticket and $871 for a round-trip.

  • Do I need a passport to fly between Boise and London?

    Yes

  • Which airports will I be using when flying from Boise to London?

    On your way to London, you’ll fly out from Boise Air Term. Gowen Fld. You’ll be landing in one of London’s 2 airports: London Gatwick or London Heathrow.

  • Which aircraft models fly most regularly from Boise to London?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Boise to London?

    Star Alliance, and SkyTeam are the airline alliances operating flights between Boise and London, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Boise to London, Delta or Virgin Atlantic?

    The two airlines most popular with KAYAK users for flights from Boise to London are Delta and Virgin Atlantic. With an average price for the route of $898 and an overall rating of 7.8, Delta is the most popular choice. Virgin Atlantic is also a great choice for the route, with an average price of $970 and an overall rating of 7.5.

  • How does KAYAK find such low prices on flights from Boise to London?

    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 London.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from Boise 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 London?

    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 to London with an airline and back to Boise with another airline.

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

    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 to London from Boise 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 London

 
See real verified KAYAK customer reviews for airlines flying from Boise to London. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Boise to London? 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
7.2Food
7.8Comfort
7.8Entertainment
8.5Crew
8.1Boarding
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. 😀

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.

Great. Very smooth. Plenty of information. However, wish they would give out a menu in advance of making a dinner choice like other international airlines. The flight attendant says chicken or pasta and there are details about ingredients or spices requiring the passenger to ask which requires the flight attendant to answer many times. So easy to solve this problem. P

All fine save for the abominable catering. Really gone downhill. We found it all inedible.

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.

Late flight caused a missed connection, had to be put on a later international flight without my requested vegan meal.

Half the bathrooms assigned to economy were out of action

The crew members were great. The food was good. Entertainment was average - Could use a wider and better selections of movies and series.

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.

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.

Flight delayed yet again. Crew apathetic and unhelpful re affect on connecting flight.

I think Virgin is one of the best flying experiences, especially from/to the UK. The staff are so helpful and fun, the food is good, seats comfortable, goof entertainment and great value. Check in and boarding is pretty pain free. I also find that the other passengers are generally so kind and considerate than when I've flown other airlines.

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.

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.

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.

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.

Although the flight was delayed the crew and the flight itself were very good. Couldn't fault anything and after the disappointment of being abandoned in the US by BA it was a welcome relief to travel with United

Liked fold flat bed. Didn’t like having no window. Didn’t like poor choice of food and being served dinner very late, hours after take off of a 7:40pm flight. Servers not friendly. Food horrible in business class.

The flight was heavily booked so boarding was a lengthy process. The FA’s were rather abrupt during this process but became more gracious as the flight went on. Breakfast (puffed pastry and chewy sausage) was pretty horrible but there was fruit and yogurt which they didn’t mess up. Overall it was fine.

Fight was delayed an hour due to operational issues ,then further delayed due to ground control for a total of about 1.30 hours. Salad was completely frozen and flatware was so cold you could barely handle it. Crew was friendly and professional and the flight was smooth. The aircraft was clean and well-serviced.

Waited for our plane from HNL so we didn't miss connection. AMAZING Service for that, then really clean plane. Nice airline attendants.

Everything you need to know for your flight from Boise to London

Information on your arrival and departure airports