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$334+ 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 8/18. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — MAD
Jul 7 — Jul 141
Mon 7/7
Mon 7/14
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 July 2, 2025.

Round-trip from

$470
(United Airlines)

One-way from

$334
(Kiwi.com)

Popular in

May

Cheapest in

January

Average price

$1,169
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. 13% potential increase in price ($139 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($26 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 2, 2025.

This United Airlines deal was found by Cheapflights users on 6/29. 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.
Tue 9/169:52 amBOI - MAD
2 stops38h 13mUnited Airlines
Tue 9/2312:45 pmMAD - BOI
2 stops30h 46mUnited Airlines
Deal found 6/29$470
This Booking.com deal was found by Cheapflights users on 6/30. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/105:00 amBOI - MAD
2 stops41h 40mAir Canada
Tue 8/2612:45 pmMAD - BOI
2 stops41h 36mAir Canada
Deal found 6/30$495
This lol.travel deal was found by Cheapflights users on 6/30. 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.
Sun 8/107:00 amBOI - MAD
1 stop18h 05mFinnair
Tue 8/2612:40 pmMAD - BOI
1 stop17h 03mFinnair
Deal found 6/30$529
This Cheapflightsfares deal was found by Cheapflights users on 7/1. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/117:00 amBOI - MAD
1 stop18h 05mIberia
Wed 8/2712:40 pmMAD - BOI
1 stop17h 03mIberia
Deal found 7/1$538
This American Airlines deal was found by Cheapflights users on 6/29. 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.
Tue 8/191:10 pmBOI - MAD
1 stop16h 15mAmerican Airlines
Wed 11/191:15 pmMAD - BOI
2 stops18h 21mAmerican Airlines
Deal found 6/29$543
This Finnair deal was found by Cheapflights users on 6/29. 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.
Tue 9/161:38 pmBOI - MAD
1 stop16h 42mMultiple Airlines
Tue 9/234:00 pmMAD - BOI
1 stop28h 48mMultiple Airlines
Deal found 6/29$548
This Delta deal was found by Cheapflights users on 6/30. 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.
Sun 11/166:00 amBOI - MAD
2 stops19h 00mDelta
Tue 11/2511:00 amMAD - BOI
2 stops21h 17mDelta
Deal found 6/30$592
This KLM deal was found by Cheapflights users on 6/30. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/1611:30 pmBOI - MAD
1 stop25h 30mKLM
Mon 11/248:35 pmMAD - BOI
2 stops29h 56mKLM
Deal found 6/30$633
This Flighttix deal was found by Cheapflights users on 7/2. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/181:30 pmBOI - MAD
1 stop36h 05mVirgin Atlantic
Wed 9/312:40 pmMAD - BOI
2 stops36h 17mVirgin Atlantic
Deal found 7/2$646

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 July 2, 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

Tue 9/16

9:52 am-8:05 am

2 stops38h 13m

Madrid Barajas

Tue 9/23

12:45 pm-11:31 am

2 stops30h 46m

$470

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

Sun 8/10

5:00 am-6:40 am

2 stops41h 40m

Madrid Barajas

Tue 8/26

12:45 pm-10:21 pm

2 stops41h 36m

$495

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

Sun 8/10

7:00 am-9:05 am

1 stop18h 05m

Madrid Barajas

Tue 8/26

12:40 pm-9:43 pm

1 stop17h 03m

$529

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

Mon 8/11

7:00 am-9:05 am

1 stop18h 05m

Madrid Barajas

Wed 8/27

12:40 pm-9:43 pm

1 stop17h 03m

$538

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

Tue 8/19

1:10 pm-1:25 pm

1 stop16h 15m

Madrid Barajas

Wed 11/19

1:15 pm-11:36 pm

2 stops18h 21m

$543

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

Tue 9/16

1:38 pm-2:20 pm

1 stop16h 42m

Madrid Barajas

Tue 9/23

4:00 pm-12:48 pm

1 stop28h 48m

$548

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

Sun 11/16

6:00 am-9:00 am

2 stops19h 00m

Madrid Barajas

Tue 11/25

11:00 am-12:17 am

2 stops21h 17m

$592

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

Sun 11/16

11:30 pm-9:00 am

1 stop25h 30m

Madrid Barajas

Mon 11/24

8:35 pm-6:31 pm

2 stops29h 56m

$633

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

Mon 8/18

1:30 pm-9:35 am

1 stop36h 05m

Madrid Barajas

Wed 9/3

12:40 pm-4:57 pm

2 stops36h 17m

$646

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

Mon 8/18

10:00 am-4:15 pm

3 stops46h 15m

$334

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

Showing 1-10 of 16 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 July 2, 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 July 2, 2025.
Read reviews from past customers who have flown Delta, KLM, and Finnair 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
7,975 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Entertainment

7.9

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
7,975 reviews
Delta
8.0
Very good
7,975 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Entertainment

7.9

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!
KLM
7.8
Good
1,366 reviews
Delta
8.0
Very good
7,975 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Entertainment

7.9

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!
Finnair
7.6
Good
1,303 reviews
Delta
8.0
Very good
7,975 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Entertainment

7.9

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
8,861 reviews
Delta
8.0
Very good
7,975 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Entertainment

7.9

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!
Virgin Atlantic
7.4
Good
654 reviews
Delta
8.0
Very good
7,975 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Entertainment

7.9

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.

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

    Currently priced at $470, 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 Air Canada and Finnair - these airlines can fly you to your destination from $495 and $529, respectively. You may be able to fly from Boise to Madrid for 47% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Boise to Madrid one-way?

    To fly one-way, consider booking your trip with Air Canada, which is currently one of the cheapest options available, starting at $399. United Airlines flights start at $405 while deals on Iberia start at $419 one-way.

  • 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 Boise?

Book flights to Boise if you plan to visit one of these locations
Segovia
Fuenlabrada

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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 July 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$556Average$927FlexibilityNo cancel feeOn-time71%
IberiaCheapest$564Average$883FlexibilityNo cancel feeOn-time77%
DeltaCheapest$568Average$1,005FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$569Average$667FlexibilityNo cancel feeOn-time69%

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