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$798+ Cheap flights from Boise (BOI) to Madrid, Spain (MAD)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/15. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — MAD
Jun 26 — Jul 31
Fri 6/26
Fri 7/3
1 adult, Economy
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Cheap 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 May 27, 2026.

This United Airlines deal was found by Cheapflights users on 5/26. 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.
Sun 11/157:00 am
BOI
-
MAD
2 stops16h 45m
United Airlines
Thu 11/196:00 am
MAD
-
BOI
2 stops25h 05m
United Airlines
Deal found 5/26$798
This Expedia deal was found by Cheapflights users on 5/25. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/16:44 am
BOI
-
MAD
1 stop18h 21m
Finnair
Wed 9/3012:40 pm
MAD
-
BOI
1 stop17h 47m
Finnair
Deal found 5/25$878
This American Airlines deal was found by Cheapflights users on 5/25. 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 9/13:16 pm
BOI
-
MAD
1 stop14h 14m
American Airlines
Wed 9/3011:30 am
MAD
-
BOI
2 stops18h 57m
American Airlines
Deal found 5/25$882
This United Airlines deal was found by Cheapflights users on 5/25. 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 9/17:05 pm
BOI
-
MAD
2 stops27h 45m
United Airlines
Wed 9/301:30 pm
MAD
-
BOI
2 stops34h 01m
United Airlines
Deal found 5/25$891
This United Airlines deal was found by Cheapflights users on 5/26. 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 8/117:05 pm
BOI
-
MAD
2 stops27h 45m
United Airlines
Tue 8/2512:45 pm
MAD
-
BOI
2 stops30h 43m
United Airlines
Deal found 5/26$897
This United Airlines deal was found by Cheapflights users on 5/25. 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.
Mon 7/276:30 am
BOI
-
MAD
2 stops42h 20m
United Airlines
Tue 8/1112:45 pm
MAD
-
BOI
2 stops40h 52m
United Airlines
Deal found 5/25$902
This United Airlines deal was found by Cheapflights users on 5/26. 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.
Mon 7/277:05 pm
BOI
-
MAD
2 stops51h 45m
United Airlines
Thu 8/131:30 pm
MAD
-
BOI
2 stops40h 07m
United Airlines
Deal found 5/26$907
This American Airlines deal was found by Cheapflights users on 5/23. 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 8/113:04 pm
BOI
-
MAD
2 stops16h 46m
American Airlines
Tue 8/2512:40 pm
MAD
-
BOI
1 stop17h 40m
American Airlines
Deal found 5/23$910
This FlightHub deal was found by Cheapflights users on 5/27. 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.
Mon 7/277:05 pm
BOI
-
MAD
2 stops29h 45m
Air Canada
Thu 8/131:30 pm
MAD
-
BOI
2 stops40h 07m
Air Canada
Deal found 5/27$912

Find 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 May 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$798
(United Airlines)

Popular in

May

Cheapest in

February

Average price

$1,155
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Madrid Barajas flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Madrid Barajas flights.
Search Deals
From Boise Air Term. Gowen Fld to Madrid Barajas
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($130 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($38 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

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 May 27, 2026.
Use the filters below to find and compare flights from Boise to Madrid that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

Sun 11/15

7:00 am-7:45 am

2 stops16h 45m

Madrid Barajas

Thu 11/19

6:00 am-11:05 pm

2 stops25h 05m

$798

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

Tue 8/11

7:05 pm-6:50 am

2 stops27h 45m

Madrid Barajas

Tue 8/25

12:45 pm-11:28 am

2 stops30h 43m

$897

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

Mon 7/27

6:30 am-8:50 am

2 stops42h 20m

Madrid Barajas

Tue 8/11

12:45 pm-9:37 pm

2 stops40h 52m

$902

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

Mon 7/27

6:30 am-8:50 am

2 stops42h 20m

Madrid Barajas

Thu 8/13

1:30 pm-9:37 pm

2 stops40h 07m

$907
Quickest round-trip

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

Tue 8/11

6:44 am-9:05 am

1 stop18h 21m

Madrid Barajas

Tue 8/25

12:40 pm-10:20 pm

1 stop17h 40m

$914

BoiseMadrid

BOI - MAD

BOIMAD

Boise Air Term. Gowen Fld

Mon 7/27

3:54 pm-2:25 pm

1 stop14h 31m

Madrid Barajas

Thu 8/13

3:55 pm-11:22 am

1 stop27h 27m

$920

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/26

Sorted by cheapest first

Compare providers for flights from Boise to Madrid

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boise to Madrid in May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Boise-Madrid flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boise-Madrid flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boise-Madrid flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boise-Madrid flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boise-Madrid flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

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 May 27, 2026.
Read reviews from past customers who have flown Delta,United Airlines, andAmerican 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
7.9
Good
8,425 reviews

Food

7.2

Entertainment

7.8

Overall

7.9

Comfort

7.8

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Delta
7.9
Good
8,425 reviews
Delta
7.9
Good
8,425 reviews

Food

7.2

Entertainment

7.8

Overall

7.9

Comfort

7.8

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
United Airlines
7.4
Good
9,751 reviews
Delta
7.9
Good
8,425 reviews

Food

7.2

Entertainment

7.8

Overall

7.9

Comfort

7.8

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
American Airlines
7.1
Good
11,639 reviews
Delta
7.9
Good
8,425 reviews

Food

7.2

Entertainment

7.8

Overall

7.9

Comfort

7.8

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Iberia
7.0
Good
3,220 reviews
Delta
7.9
Good
8,425 reviews

Food

7.2

Entertainment

7.8

Overall

7.9

Comfort

7.8

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

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 fly from Boise to Madrid in about 16h 45m. The time it takes to get you to your destination can typically vary by up to . The distance between Boise and Madrid is about 5275 mi.

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

    Currently priced at $493, 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 $494 and $541, respectively. You may be able to fly from Boise to Madrid for 36% 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.

See more FAQs

Traveling to a place near Madrid?

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

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Alternative routes for Boise to Madrid

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Spokane 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 May 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$493Average$901FlexibilityNo cancel feeOn-time69%
IberiaCheapest$494Average$602FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$541Average$998FlexibilityNo cancel feeOn-time71%
DeltaCheapest$674Average$802FlexibilityNo cancel feeOn-timeN/A

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