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$242+ Cheap flights from Milwaukee (MKE) to Barcelona

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 5/4. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — BCN
Feb 13 — Feb 201
Fri 2/13
Fri 2/20
1 adult, Economy
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Cheap flight deals from Milwaukee to Barcelona

Discover tips and strategies to find the most affordable flight options for your journey from Milwaukee (MKE) to Barcelona (S37). 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 January 14, 2026.

Round-trip from

$428
(KLM)

One-way from

$242
(oojo)

Popular in

June

Cheapest in

November

Average price

$883
From Milwaukee-Mitchell to Barcelona
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One-way flight from Milwaukee-Mitchell to Barcelona
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Highest demand for flights based on searches. 22% potential increase in price ($288 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($37 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Find flight deals from Milwaukee to Barcelona

Cheapest flights from Milwaukee to Barcelona
Explore the most affordable flight options available from Milwaukee to Barcelona. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 14, 2026.

This KLM deal was found by Cheapflights users on 1/13. 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.
Mon 1/263:42 pm
MKE
-
BCN
1 stop33h 58m
KLM
Tue 2/310:15 am
BCN
-
MKE
1 stop17h 43m
KLM
Deal found 1/13$428
This Delta deal was found by Cheapflights users on 1/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/217:05 am
MKE
-
BCN
1 stop17h 55m
Delta
Tue 1/2710:15 am
BCN
-
MKE
1 stop17h 43m
Delta
Deal found 1/14$435
This Delta deal was found by Cheapflights users on 1/13. 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.
Mon 1/265:30 am
MKE
-
BCN
2 stops19h 30m
Delta
Tue 2/310:15 am
BCN
-
MKE
2 stops20h 31m
Delta
Deal found 1/13$439
This oojo deal was found by Cheapflights users on 1/13. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/2012:26 pm
MKE
-
BCN
2 stops16h 09m
British Airways
Fri 2/276:40 am
BCN
-
MKE
2 stops20h 19m
British Airways
Deal found 1/13$445
This American Airlines deal was found by Cheapflights users on 1/13. 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.
Fri 2/204:47 pm
MKE
-
BCN
2 stops16h 43m
American Airlines
Fri 2/2710:40 am
BCN
-
MKE
1 stop19h 39m
American Airlines
Deal found 1/13$456
This oojo deal was found by Cheapflights users on 1/14. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/164:47 pm
MKE
-
BCN
2 stops22h 43m
British Airways
Sun 3/88:00 pm
BCN
-
MKE
2 stops33h 07m
British Airways
Deal found 1/14$457
This KLM deal was found by Cheapflights users on 1/13. 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.
Fri 2/207:00 am
MKE
-
BCN
1 stop18h 00m
KLM
Fri 2/2710:55 am
BCN
-
MKE
1 stop19h 52m
KLM
Deal found 1/13$460
This United Airlines deal was found by Cheapflights users on 1/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/215:00 am
MKE
-
BCN
2 stops21h 35m
United Airlines
Thu 1/291:35 pm
BCN
-
MKE
2 stops39h 24m
United Airlines
Deal found 1/14$468
This American Airlines deal was found by Cheapflights users on 1/13. 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.
Mon 2/1611:51 am
MKE
-
BCN
1 stop13h 59m
American Airlines
Sun 3/86:40 am
BCN
-
MKE
2 stops17h 14m
American Airlines
Deal found 1/13$475
This Air Canada deal was found by Cheapflights users on 1/14. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/217:00 am
MKE
-
BCN
2 stops19h 35m
Multiple Airlines
Wed 1/281:50 pm
BCN
-
MKE
3 stops29h 19m
Multiple Airlines
Deal found 1/14$477
This American Airlines deal was found by Cheapflights users on 1/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/44:30 pm
MKE
-
BCN
2 stops15h 10m
American Airlines
Sun 2/812:30 pm
BCN
-
MKE
1 stop14h 54m
American Airlines
Deal found 1/14$481
This Delta deal was found by Cheapflights users on 1/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/217:05 am
MKE
-
BCN
1 stop17h 55m
Delta
Mon 1/2610:15 am
BCN
-
MKE
1 stop17h 43m
Delta
Deal found 1/14$485

Cheapflights Fare Finder

 
Customize your flight search to find flights from Milwaukee to Barcelona 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 January 14, 2026.
Use the filters below to find and compare flights from Milwaukee to Barcelona that are best for you.

Fly from

Milwaukee

Fly to

Barcelona

Route

Depart

Return

Price

MilwaukeeBarcelona

MKE - BCN

MKEBCN

Milwaukee-Mitchell

Mon 1/26

3:42 pm-8:40 am

1 stop33h 58m

Barcelona-El Prat

Tue 2/3

10:15 am-8:58 pm

1 stop17h 43m

$428

MilwaukeeBarcelona

MKE - BCN

MKEBCN

Milwaukee-Mitchell

Mon 1/26

5:30 am-8:00 am

2 stops19h 30m

Barcelona-El Prat

Tue 2/3

10:15 am-11:46 pm

2 stops20h 31m

$439

MilwaukeeBarcelona

MKE - BCN

MKEBCN

Milwaukee-Mitchell

Fri 2/20

12:26 pm-11:35 am

2 stops16h 09m

Barcelona-El Prat

Fri 2/27

6:40 am-7:59 pm

2 stops20h 19m

$445

MilwaukeeBarcelona

MKE - BCN

MKEBCN

Milwaukee-Mitchell

Mon 2/16

4:47 pm-10:30 pm

2 stops22h 43m

Barcelona-El Prat

Sun 3/8

8:00 pm-11:07 pm

2 stops33h 07m

$445

MilwaukeeBarcelona

MKE - BCN

MKEBCN

Milwaukee-Mitchell

Fri 2/20

4:47 pm-4:30 pm

2 stops16h 43m

Barcelona-El Prat

Fri 2/27

10:40 am-11:19 pm

1 stop19h 39m

$456

MilwaukeeBarcelona

MKE - BCN

MKEBCN

Milwaukee-Mitchell

Mon 1/26

1:04 pm-12:40 pm

2 stops16h 36m

Barcelona-El Prat

Mon 2/2

6:55 pm-6:25 pm

2 stops30h 30m

$477

MilwaukeeBarcelona

MKE - BCN

MKEBCN

Milwaukee-Mitchell

Mon 1/26

7:05 am-8:00 am

1 stop17h 55m

Barcelona-El Prat

Mon 2/2

10:15 am-8:58 pm

1 stop17h 43m

$485

MilwaukeeBarcelona

MKE - BCN

MKEBCN

Milwaukee-Mitchell

Sat 2/28

6:00 am-2:15 pm

2 stops25h 15m

Barcelona-El Prat

Sat 3/7

10:30 am-8:45 pm

2 stops17h 15m

$498

MilwaukeeBarcelona

MKE - BCN

MKEBCN

Milwaukee-Mitchell

Mon 2/16

7:00 am-8:00 am

1 stop18h 00m

Barcelona-El Prat

Sun 3/8

10:55 am-8:55 pm

1 stop16h 00m

$510

MilwaukeeBarcelona

MKE - BCN

MKEBCN

Milwaukee-Mitchell

Fri 3/20

6:46 pm-7:35 am

1 stop30h 49m

Barcelona-El Prat

Thu 4/30

11:35 am-4:17 pm

1 stop35h 42m

$572

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/13

Showing 1-10 of 19 results
1
2

Best time to book a flight from Milwaukee to Barcelona

Have a flexible travel schedule? Discover the best time to fly to Barcelona from Milwaukee 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 Milwaukee to Barcelona

What is the cheapest month to book a flight from Milwaukee to Barcelona?

Currently, February is the cheapest month in which you can book a flight from Milwaukee to Barcelona (average of $366). Flying from Milwaukee to Barcelona in June is currently the most expensive (average of $866). 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.

How much does it cost to fly round-trip from Milwaukee to Barcelona?

Reviews of airlines servicing Barcelona

Get insights into the airlines that provide service to Barcelona. 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 Barcelona. Reviews last updated January 14, 2026.
Get a feel of what it's like to fly with Delta, United Airlines, and American Airlines from Milwaukee to Barcelona by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,043 reviews

Food

7.2

Overall

7.9

Entertainment

7.8

Boarding

8.1

Crew

8.5

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,043 reviews
Delta
7.9
Good
8,043 reviews

Food

7.2

Overall

7.9

Entertainment

7.8

Boarding

8.1

Crew

8.5

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,157 reviews
Delta
7.9
Good
8,043 reviews

Food

7.2

Overall

7.9

Entertainment

7.8

Boarding

8.1

Crew

8.5

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,125 reviews
Delta
7.9
Good
8,043 reviews

Food

7.2

Overall

7.9

Entertainment

7.8

Boarding

8.1

Crew

8.5

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
British Airways
6.7
Okay
7,672 reviews
Delta
7.9
Good
8,043 reviews

Food

7.2

Overall

7.9

Entertainment

7.8

Boarding

8.1

Crew

8.5

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

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

  • What airport do you fly from for flights from Milwaukee to Barcelona?

    If you book a flight to Barcelona from Milwaukee, you will be flying from Milwaukee-Mitchell, which is the city’s only airport. Milwaukee-Mitchell (MKE) is located 6.4 mi from the center of Milwaukee. There are 0 flights from Milwaukee-Mitchell to Barcelona per day from 4 different airlines.

  • How long is the flight from Milwaukee to Barcelona?

    Airlines like KLM, Delta, and British Airways fly from Milwaukee to Barcelona in about 16h 09m. The time it takes to get you to your destination can typically vary by up to 17h 49m. The distance from Milwaukee to Barcelona is about 4368 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Milwaukee to Barcelona round-trip?

    Currently priced at $508, United Airlines will fly you from Milwaukee to Barcelona and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and Delta - these airlines can fly you to your destination from $609 and $676, respectively. United Airlines is currently priced 47% below the average price you’ll pay for this route.

  • Can I find deals for flights from Milwaukee to Barcelona that include hotel bookings?

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

  • How can I find direct flights from Milwaukee to Barcelona?

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

  • Can I find deals for business class flights from Milwaukee to Barcelona?

    Yes. Cheapflights offers flight deals from Milwaukee to Barcelona 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 Milwaukee to Barcelona?

    Currently, February is the cheapest month in which you can book a flight from Milwaukee to Barcelona (average of $366). Flying from Milwaukee to Barcelona in June is currently the most expensive (average of $866). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 4 airlines flying from Milwaukee to Barcelona

Discover the top 4 airlines that operate flights from Milwaukee to Barcelona. 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 January 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$508Average$790FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$609Average$929FlexibilityNo cancel feeOn-time71%
DeltaCheapest$676Average$866FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$689Average$864FlexibilityNo cancel feeOn-time70%

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