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$330+ Cheap flights from Boise (BOI) to Madrid, Spain (MAD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/4. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — MAD
oct. 17 — oct. 241
vie. 10/17
vie. 10/24
1 adult, Economy
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Cheap flight deals from Boise to Madrid

Discover tips and strategies to find the most affordable flight options for your journey from Boise (BOI) to Madrid (MAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated septiembre 17, 2025.

Round-trip from

$515
(lol.travel)

One-way from

$330
(Kiwi.com)

Popular in

May

Cheapest in

August

Average price

$909
From Boise Air Term. Gowen Fld to Madrid Barajas
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One-way flight from Boise Air Term. Gowen Fld to Madrid Barajas
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Highest demand for flights based on searches. 16% potential increase in price ($172 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($30 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Boise to Madrid

Cheapest flights from Boise to Madrid
Explore the most affordable flight options available from Boise to Madrid. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 17, 2025.

This lol.travel deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/272:31 pmBOI - MAD
2 stops34h 34mUnited Airlines
mié. 11/128:30 amMAD - BOI
2 stops22h 58mUnited Airlines
Deal found 9/15$515
This American Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/277:00 amBOI - MAD
1 stop19h 25mAmerican Airlines
mié. 11/121:00 pmMAD - BOI
2 stops31h 35mAmerican Airlines
Deal found 9/15$550
This United Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/61:50 pmBOI - MAD
2 stops34h 15mUnited Airlines
jue. 12/181:35 pmMAD - BOI
2 stops41h 24mUnited Airlines
Deal found 9/16$554
This United Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/27:11 pmBOI - MAD
2 stops28h 49mUnited Airlines
vie. 12/191:35 pmMAD - BOI
2 stops41h 24mUnited Airlines
Deal found 9/16$555
This Air Canada deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/277:00 pmBOI - MAD
2 stops30h 00mMultiple Airlines
mié. 11/121:35 pmMAD - BOI
3 stops30h 04mMultiple Airlines
Deal found 9/15$556
This Finnair deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/187:00 amBOI - MAD
1 stop18h 25mFinnair
mar. 12/912:40 pmMAD - BOI
1 stop17h 45mFinnair
Deal found 9/15$557
This Iberia deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/277:00 amBOI - MAD
1 stop19h 25mIberia
mié. 11/1212:40 pmMAD - BOI
1 stop17h 52mIberia
Deal found 9/15$559
This FlightHub deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/163:54 pmBOI - MAD
2 stops40h 16mScandinavian Airlines
sáb. 12/66:35 pmMAD - BOI
2 stops36h 01mScandinavian Airlines
Deal found 9/16$560
This Finnair deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/187:00 amBOI - MAD
2 stops17h 50mMultiple Airlines
mar. 12/912:40 pmMAD - BOI
1 stop17h 45mMultiple Airlines
Deal found 9/14$562
This Delta deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/61:56 pmBOI - MAD
1 stop35h 19mDelta
mié. 12/1710:00 amMAD - BOI
2 stops22h 10mDelta
Deal found 9/16$568
This United Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/12:40 pmBOI - MAD
2 stops21h 35mUnited Airlines
vie. 12/191:35 pmMAD - BOI
2 stops41h 24mUnited Airlines
Deal found 9/16$576
This Delta deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/35:17 amBOI - MAD
2 stops18h 43mDelta
jue. 12/1811:15 amMAD - BOI
1 stop19h 09mDelta
Deal found 9/16$577

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boise to Madrid that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated septiembre 17, 2025.
Use the filters below to find and compare flights from Boise to Madrid that are best for you.

Fly from

Boise

Fly to

Madrid

Route

Depart

Return

Price

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

sáb. 12/6

2:20 pm-8:05 am

3 stops33h 45m

Madrid Barajas

vie. 12/19

1:35 pm-10:59 pm

2 stops41h 24m

$554

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

mar. 11/18

7:00 am-9:25 am

1 stop18h 25m

Madrid Barajas

mar. 12/9

12:40 pm-10:25 pm

1 stop17h 45m

$557

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

mar. 11/18

7:00 am-9:25 am

1 stop18h 25m

Madrid Barajas

mar. 12/9

12:40 pm-10:25 pm

1 stop17h 45m

$557

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

lun. 12/1

7:45 pm-8:00 am

2 stops28h 15m

Madrid Barajas

mar. 12/16

11:15 am-3:13 pm

2 stops35h 58m

$562

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

mar. 11/18

7:00 am-10:00 am

2 stops19h 00m

Madrid Barajas

lun. 12/8

12:55 am-12:20 pm

2 stops19h 25m

$562

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

mar. 11/18

7:00 am-8:50 am

2 stops17h 50m

Madrid Barajas

mar. 12/9

12:40 pm-10:25 pm

1 stop17h 45m

$562

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

mar. 11/18

5:17 am-9:15 am

2 stops19h 58m

Madrid Barajas

mar. 12/9

10:00 am-11:04 am

2 stops33h 04m

$562

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

lun. 12/1

2:40 pm-8:15 pm

2 stops21h 35m

Madrid Barajas

vie. 12/19

1:35 pm-10:59 pm

2 stops41h 24m

$576

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

mié. 12/3

12:19 pm-11:35 am

3 stops39h 16m

$363

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

vie. 12/5

8:16 am-10:15 pm

3 stops29h 59m

$373

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 18 results
1
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Best time to book a flight from Boise to Madrid

Have a flexible travel schedule? Discover the best time to fly to Madrid from Boise with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from Boise to Madrid?

Currently, November is the cheapest month in which you can book a flight from Boise to Madrid (average of $543). Flying from Boise to Madrid in June is currently the most expensive (average of $1,054). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BOI to MAD?

Find hourly flight availability from Boise to Madrid. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated septiembre 17, 2025.

It’s optimal to fly from Boise to Madrid in the evening. By choosing this option you can save up to 31% on the cost of your flight, compared to a flight in the afternoon.

How much does it cost to fly round-trip from Boise to Madrid?

Reviews of airlines servicing Madrid

Get insights into the airlines that provide service to Madrid. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Madrid. Reviews last updated septiembre 17, 2025.
Read reviews from past customers who have flown Delta, United Airlines, and American Airlines from Boise to Madrid. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,961 reviews

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,961 reviews
Delta
8.0
Very good
7,961 reviews

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,926 reviews
Delta
8.0
Very good
7,961 reviews

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,961 reviews

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Iberia
7.0
Good
2,925 reviews
Delta
8.0
Very good
7,961 reviews

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Boise to Madrid. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Boise to Madrid?

    Airlines like United Airlines, Iberia, and Finnair fly from Boise to Madrid in about 18h 25m. The time it takes to get you to your destination can typically vary by up to 15h 20m. The distance between Boise and Madrid is about 5275 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Boise to Madrid round-trip?

    Currently priced at $579, United Airlines will fly you from Boise to Madrid and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Iberia and American Airlines - these airlines can fly you to your destination from $586 and $591, respectively. You may be able to fly from Boise to Madrid for 32% less than the average price by searching for these airlines.

  • Can I find deals for flights from Boise to Madrid that include hotel bookings?

    Yes. In addition to deals on Boise to Madrid flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boise to Madrid?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boise to Madrid.

  • Can I find deals for business class flights from Boise to Madrid?

    Yes. Cheapflights offers flight deals from Boise to Madrid by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Boise to Madrid?

    Currently, November is the cheapest month in which you can book a flight from Boise to Madrid (average of $543). Flying from Boise to Madrid in June is currently the most expensive (average of $1,054). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Madrid?

Book flights to Madrid if you plan to visit one of these locations
Fuenlabrada
Getafe

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Boise to Madrid

See prices for flight routes from nearby airports that may be better suited for you.
Spokane to Madrid flights
Jackson to Madrid flights

Top 4 airlines flying from Boise to Madrid

Discover the top 4 airlines that operate flights from Boise to Madrid. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated septiembre 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$579Average$667FlexibilityNo cancel feeOn-time69%
IberiaCheapest$586Average$807FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$591Average$924FlexibilityNo cancel feeOn-time71%
DeltaCheapest$627Average$859FlexibilityNo cancel feeOn-timeN/A

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