BOI - MAD

$321 Find Cheap Flights from Boise to Madrid

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 Madrid departing on 11/5. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Madrid

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boise to Madrid, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boise to Madrid, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$443
Typical prices: $675-$1,290
Delta
Tue 11/18Tue 12/9
BOI - MAD • 2 stops
Cheapest one-way
$321
Multiple Airlines
Wed 11/5
BOI - MAD • 3 stops
Top airlines
Delta
Cheapest • from $443 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
November
Cheapest • 30% price drop
May
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to Madrid!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Boise to Madrid (BOI-MAD)

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

Tue, Nov 18 - Tue, Dec 9
Delta Logo
5:20 am - 8:00 amBOI-MAD
18h 40m2 stops
Delta Logo
10:00 am - 10:15 amMAD-BOI
32h 15m2 stops
$443Delta
Find Deal
Tue, Nov 18 - Tue, Dec 9
Delta Logo
5:35 am - 8:00 amBOI-MAD
18h 25m2 stops
Delta Logo
11:15 am - 12:54 pmMAD-BOI
33h 39m1 stop
$448Delta
Find Deal
Sun, Oct 26 - Tue, Nov 11
Multiple Airlines Logo
11:39 pm - 8:05 amBOI-MAD
25h 26m1 stop
Multiple Airlines Logo
6:00 am - 10:39 pmMAD-BOI
24h 39m2 stops
$453Multiple Airlines
Find Deal
Sun, Oct 26 - Mon, Nov 10
Multiple Airlines Logo
7:00 am - 9:25 amBOI-MAD
19h 25m1 stop
Multiple Airlines Logo
12:55 am - 10:32 pmMAD-BOI
29h 37m1 stop
$478Multiple Airlines
Find Deal
Tue, Nov 18 - Mon, Dec 8
Iberia Logo
7:00 am - 6:15 amBOI-MAD
15h 15m1 stop
Iberia Logo
12:55 am - 12:27 pmMAD-BOI
19h 32m1 stop
$483Iberia
Find Deal
Tue, Nov 18 - Tue, Dec 9
Iberia Logo
7:00 am - 6:15 amBOI-MAD
15h 15m1 stop
Iberia Logo
12:40 pm - 10:25 pmMAD-BOI
17h 45m1 stop
$488Iberia
Find Deal
Thu, Nov 6 - Tue, Nov 11
United Airlines Logo
12:45 pm - 4:40 pmBOI-MAD
19h 55m2 stops
United Airlines Logo
6:00 am - 11:28 pmMAD-BOI
25h 28m2 stops
$545United Airlines
Find Deal
Thu, Nov 6 - Tue, Nov 11
United Airlines Logo
12:45 pm - 4:40 pmBOI-MAD
19h 55m2 stops
United Airlines Logo
6:25 am - 1:44 pmMAD-BOI
39h 19m3 stops
$559United Airlines
Find Deal
Sun, Nov 16 - Fri, Dec 5
American Airlines Logo
7:00 am - 10:00 amBOI-MAD
19h 00m2 stops
American Airlines Logo
12:55 am - 12:32 pmMAD-BOI
19h 37m2 stops
$605American Airlines
Find Deal
Sun, Oct 26 - Tue, Nov 11
American Airlines Logo
7:00 am - 9:25 amBOI-MAD
19h 25m1 stop
American Airlines Logo
12:40 pm - 12:35 pmMAD-BOI
31h 55m1 stop
$616American Airlines
Find Deal
Booking Insights

KAYAK's insights & trends for Boise to Madrid flights

Get data-powered insights and trends into flights from Boise to Madrid 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 Madrid?

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 Madrid departing in November.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boise to Madrid, 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 Madrid is November, where tickets cost $604 (return) on average. On the other hand, the most expensive months are May and April, where the average cost of round-trip tickets is $1,187 and $1,080 respectively.

Good to know

Low seasonJanuary
Cheapest flight$321
Best time to beat the crowds with an average 10% drop in price.
Most popular time to fly with an average 38% increase in price.
Flight from Boise to Madrid

When to book flights from Boise to Madrid

Are your dates flexible? Find out the best times to travel from Boise to Madrid 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 Madrid

  • What is the cheapest flight from Boise to Madrid?

    In the last 3 days, the lowest price for a flight from Boise to Madrid was $321 for a one-way ticket and $443 for a round-trip.

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

    Yes

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

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

  • Which airline alliances offer flights from Boise to Madrid?

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

  • Which is the best airline for flights from Boise to Madrid, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Boise to Madrid are Delta and United Airlines. With an average price for the route of $855 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $673 and an overall rating of 7.4.

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

    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 Madrid.

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

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

    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 Madrid with an airline and back to Boise with another airline. Booking your flights between Boise and MAD can sometimes prove cheaper using this method.

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

    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 Madrid 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 4 airlines serving from Boise to Madrid

 
See real verified KAYAK customer reviews for airlines flying from Boise to Madrid. 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 Madrid? 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 7980 reviews
7.9Entertainment
7.3Food
8.2Boarding
7.9Comfort
8.5Crew
Airline reviews

Old plane and old configuration/seats but still comfortable for a morning flight

10.0 ExcellentBraulio, Oct 2025ATL - SDQ
Read more Delta reviews

Old plane and old configuration/seats but still comfortable for a morning flight

They changed planes and the new plane couldn’t carry enough fuel to fly across the country so we had to stop in Kansas City to refuel. Flight was delayed .

Flight was too crowded and seats are too small, especially since passengrs are getting larger. Having a middle seat is ALWAYS tough! Woman on my left was large & kept creeping in to my space. Flight personnel were great! Have more savory rather than sweet snacks please.

Flight was crowded and the woman sitting on my left was large & kept crouching in to my space. You need bigger seats or smaller passengers to fit into the seats you DO have! Snack were OK. Would appreciate if airlines had more savory rather than sweet snacks, thank you!

Delayed flight (1hour) plus a long layover after an overnight flight with no backup plane available.

We were delayed, which I think had to do with air traffic control. Otherwise, everything was great.

The boarding process needs to be refined. Sometimes the gate crew calls out the zones and then flip to showing the.zones boarding on the gate monitor display. So, unless you are huddled around the gate lanes watching the monitor, you could miss your boarding zone. Suggest the zones be announced each time a new zone is allowed to board.

The boarding process needs to be refined. Sometimes the gate crew call out the boarding zone, and then flip to the monitor to show which zones are boarding. So unless everyone is gathered around to see the monitor there is usually confusion as wi which zones are boarding.

On time flight. Seat comfort could be better in the Comfort section.

My issue was with TSA agents for delta airlines. My luggage got flagged. The agent was going thru another persons first. He took 20 min to go thru hers. I asked them to bring mine closer so I could sit down . They said you can go sit it will be fine. I said I am supposed to keep my eyes on my bags at all times. The agent was meticulously unwrapping 2 gifts that the lady had and then tried to re warp it. He was trying to be kind i get it but 20 min for me to stand watching him do that was ridiculous. It was 6 am and there were a ton of travelers. Mine was flagged for some air packed tea that I bought in Turkey. My previous delta flight and 2 others before didn’t flag it. Consistency would be nice. Also on the flight the window shades were down for take off and landing - I thought that was very odd I thought they had to remain open for take off and landing.

My husband and I recently had an unfortunate experience with Lufthansa. At the Philadelphia International airport, the ground staff refused to board us because we didn’t have a current visa stamped on our passports for Frankfurt. We completely understand that this was our mistake. we should have double-checked the visa requirements before our trip. However, the issue that upset us most was how the situation was handled by the staff. They told us they would mark it as “boarding denied due to visa issue”, but instead they recorded it as “no show”. Because of that incorrect entry, our return flight was automatically cancelled as well, which caused additional stress and expense. Mistakes can happen, but we expected more transparency and accuracy from a reputed airline like Lufthansa. It would have made a big difference if the staff had been more careful and considerate in documenting the situation correctly.

Flight was good but there are way to many announcements for credit cards etc.

During booking, I kept trying submitting my payment from the Mexican website and it didn't work. After I had the idea to change it to the Canadian website, it worked but I had to be charged the equivalent of 50 CAD more. I received the clear instruction that I would only be able to check-in at the airport and that it was impossible to select a seat 24 hours before departure, that I had to pay 144 CAD to do so, although not only was I able to check-in 24 hours before departure, but I could have selected my seats for free then. All in all, I almost threw $200 out the window due to misleading information. Besides, the app kept crashing, the information to get to the gate on the app was inaccurate, my gate was switched and I was only informed once in the air (luckily I had noticed the departure pannel), I was not addressed in my language beforehand and even if I tried I was immediately answered in English (which meant the crew understood but didn't want to answer accordingly), there was only one snack & beverage service on my medium haul flight and no beverage service on my short haul flight. To be fair, the planes were comfortable, the crew apart from the language issue was helpful, dynamic and engaging, the plane was clean and the directions were clear and direct. United has a lot of potential to be one of my favourite airlines, but the devil is in the details and a lot of them missed the target.

Flight was timely, relatively comfortable, with decent entertainment and food served. Only problem encountered was with the free messaging which I highly appreciate, but it did not work from iphone to non-iphones.

Better WiFi. I cannot understand that in 2025, United is so behind on a technology that is now a necessity and still painfully unreliable, slow and keeps disconnecting.

The entertainment available didn’t work for anyone on the flight. Long 6 hr flight with no entertainment option and the staff didn’t know until an hour into the flight when we made sure they knew about it. They had no way to fix it.

Crew seemed a bit cranky. No seatback screens. But boarding was efficient and on time and we arrived early.

The worst landing I have ever had on a domestic flight. Thought we would lose the landing gear on landing in Newark. Then we spent 40 minutes trying to position the plane in the right place to be able to get the jet way to the plane. The plane arrived stopped. The announcer was that we were there. Everybody got up, then we were told to sit back down because they had to have us towed to a different position. We got towed and then everyone stood up and they told us we were in the wrong position to sit back down again, and then we got towed to a different position This did not happen immediately. It was 30 minutes while we wandered around a small section of the tarmac in Newark close to the gate, but apparently not close enough. Horrifying experience The CAB should be investigating that flight

Food was poorly timed and not good.. Hand held snacks, really. I kept asking for water and never got any. Service was rushed for a 7-hour flight.

Boarding was organized. Old plane. Seat fairly comfortable. Business Class much too large so you don’t receive as much attention as you should considering what you pay for the seat.

A couple ladies from the crew were so rude and nasty. Thought they were mad at having to be there especially if you asked a question. This will make me think twice next time if I book a flight with you.

Delays to take off and to leave the plane after landing added a lot of time to this flight.

Poor seat in rear of aircraft Food at Admiral’s Club Terminal D at DFW inedible

Always seated jammed in rear of aircraft Admirals Club food at DFW terminal D was absolute worst food experience and I pay $600/year to eat this dried out junk

in chicago, you have to go out to drop off your luggage for a connecting flight and come back into a security check. which was horrible with a government shut down. some airports you down off luggage and go to your gate. things were not cleanly marked.

Flight was delayed because of a bird strike. They had another plane available within 45 minutes.

Mostly good. Flight was crowded but Airline personnel were very friendly & accommodating. It would be good to have savory snacks rather than just sweet Biscoff cookies.

It was a typical flight. We had a delay which seems to be the normality now. And we had no in flight service due to conditions.

Flight attendants on this flight were very attentive and friendly

After we landed we sat on the tarmac for 1.5 hours waiting to get to our gate. Ridiculous.

Excellent. Thanks to United Star Alliance, since economy was overbooked, I’m grateful to have been upgraded to Business Class.

Good plane, excellent food, crew and entertainment. Seats in business could use an upgrade

Disaster. Downgraded. Zero apology. No effort or coordination between gate and crew. Awful seat blocked by door emergency slide box. Iberia is a mess. App never works. Avoid this airline.

We departed late but made up most of the time in flight. Our ticket was pure economy, so it wasn’t anything fancy; however, I heard that we arrived in Madrid at the exact same time that First Class passengers arrived! Overall, our experience was similar to what we had on other American Airlines transatlantic flights - good value at a reasonable price. We were even able to get our carry-on baggage onto the plane without needing to gate check it.

Flight was OK. Waiting for luggage in Madrid for 55 minutes, unacceptable

Transportation from gate to airplane was poor we stayed in hot bus for 20 minute no vantilation

The crew were friendly and helpful. Iberia lost our luggage on arrival, Friday and we didn't get it until Sunday at 10:00 p.m. local Malaga time. I also paid $382.80 for seat assignments but two out out of the four were not together. Iberia mentioned that it was because the plane was delayed in Madrid before our flight began in LAX. They should compensate us half of my payment.

We liked the flight but while we purchased an aisle seat, our seats had a different configuration on this flight. A fellow passenger suggested that the airplane had been changed. Too bad we were not informed and had no chance to modify our seat preferences. We were stuck in the window and middle seats with no chance to walk around and go to the bathroom without disturbing our sleeping fellow passenger.

Boarding an international flight via several sets of stairs and shuttle busses to the tarmac even when multiple jet-bridges were empty at Madrid airport (the hub for Iberia) was not pleasant. I was fine, but a lot of elderly folks and families with kids were struggling. A bad way to start a flight. Business class seats were nice, although not cleaned well from the prior flight.

The flight was great; I don't see any area of improvement.

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

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