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$406+ 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 10/24. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — BCN
Nov 13 — Nov 201
Thu 11/13
Thu 11/20
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 October 14, 2025.

Round-trip from

$426
(Expedia)

One-way from

$406
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$704
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. 24% potential increase in price ($311 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($39 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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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 October 14, 2025.

This Expedia deal was found by Cheapflights users on 10/13. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/910:16 amMKE - BCN
1 stop15h 24mVirgin Atlantic
Tue 11/2510:55 amBCN - MKE
1 stop16h 23mVirgin Atlantic
Deal found 10/13$426
This Air France deal was found by Cheapflights users on 10/13. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/25:15 pmMKE - BCN
1 stop32h 25mMultiple Airlines
Tue 11/1810:15 amBCN - MKE
1 stop16h 52mMultiple Airlines
Deal found 10/13$439
This Delta deal was found by Cheapflights users on 10/14. 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.
Tue 11/117:00 amMKE - BCN
1 stop18h 00mDelta
Tue 11/186:00 amBCN - MKE
2 stops19h 01mDelta
Deal found 10/14$461
This Delta deal was found by Cheapflights users on 10/13. 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.
Sun 11/95:45 amMKE - BCN
2 stops19h 15mDelta
Tue 11/256:00 amBCN - MKE
2 stops24h 55mDelta
Deal found 10/13$465
This Virgin Atlantic deal was found by Cheapflights users on 10/13. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/287:00 amMKE - BCN
1 stop18h 40mVirgin Atlantic
Fri 12/510:55 amBCN - MKE
1 stop20h 00mVirgin Atlantic
Deal found 10/13$484
This KLM deal was found by Cheapflights users on 10/13. 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 11/283:09 pmMKE - BCN
2 stops15h 51mMultiple Airlines
Fri 12/510:55 amBCN - MKE
1 stop16h 24mMultiple Airlines
Deal found 10/13$488
This United Airlines deal was found by Cheapflights users on 10/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2712:04 pmMKE - BCN
1 stop18h 06mUnited Airlines
Thu 12/41:35 pmBCN - MKE
2 stops34h 22mUnited Airlines
Deal found 10/13$510
This Delta deal was found by Cheapflights users on 10/13. 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.
Fri 11/74:49 pmMKE - BCN
2 stops19h 16mDelta
Fri 11/1410:15 amBCN - MKE
1 stop16h 52mDelta
Deal found 10/13$515
This United Airlines deal was found by Cheapflights users on 10/14. 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.
Fri 11/288:44 amMKE - BCN
2 stops17h 51mUnited Airlines
Fri 12/59:55 amBCN - MKE
2 stops19h 35mUnited Airlines
Deal found 10/14$535

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 October 14, 2025.
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

Wed 1/28

7:00 am-8:00 am

1 stop18h 00m

Barcelona-El Prat

Tue 2/3

10:15 am-8:12 pm

1 stop16h 57m

$434

MilwaukeeBarcelona

MKE - BCN

MKEBCN

Milwaukee-Mitchell

Sun 11/9

9:36 am-8:40 am

2 stops16h 04m

Barcelona-El Prat

Tue 11/25

10:55 am-11:55 pm

1 stop20h 00m

$438

MilwaukeeBarcelona

MKE - BCN

MKEBCN

Milwaukee-Mitchell

Wed 1/28

7:00 am-8:00 am

1 stop18h 00m

Barcelona-El Prat

Tue 2/3

10:15 am-8:49 am

2 stops29h 34m

$438

MilwaukeeBarcelona

MKE - BCN

MKEBCN

Milwaukee-Mitchell

Wed 1/28

10:15 am-8:00 am

2 stops14h 45m

Barcelona-El Prat

Tue 2/3

10:15 am-9:12 pm

2 stops17h 57m

$438

MilwaukeeBarcelona

MKE - BCN

MKEBCN

Milwaukee-Mitchell

Sun 11/2

5:15 pm-8:40 am

1 stop32h 25m

Barcelona-El Prat

Tue 11/18

10:15 am-8:07 pm

1 stop16h 52m

$439

MilwaukeeBarcelona

MKE - BCN

MKEBCN

Milwaukee-Mitchell

Tue 11/11

7:00 am-8:00 am

1 stop18h 00m

Barcelona-El Prat

Tue 11/18

6:00 am-6:01 pm

2 stops19h 01m

$461

MilwaukeeBarcelona

MKE - BCN

MKEBCN

Milwaukee-Mitchell

Thu 1/29

12:20 pm-8:40 am

1 stop13h 20m

Barcelona-El Prat

Tue 2/3

10:15 am-8:12 pm

1 stop16h 57m

$484

MilwaukeeBarcelona

MKE - BCN

MKEBCN

Milwaukee-Mitchell

Fri 11/28

7:00 am-8:40 am

1 stop18h 40m

Barcelona-El Prat

Fri 12/5

10:55 am-11:55 pm

1 stop20h 00m

$484

MilwaukeeBarcelona

MKE - BCN

MKEBCN

Milwaukee-Mitchell

Fri 11/28

3:09 pm-2:00 pm

2 stops15h 51m

Barcelona-El Prat

Fri 12/5

10:55 am-8:19 pm

1 stop16h 24m

$488

MilwaukeeBarcelona

MKE - BCN

MKEBCN

Milwaukee-Mitchell

Thu 1/29

10:15 am-8:40 am

2 stops15h 25m

Barcelona-El Prat

Tue 2/3

10:15 am-9:12 pm

2 stops17h 57m

$488

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/12

Showing 1-10 of 16 results
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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, November is the cheapest month in which you can book a flight from Milwaukee to Barcelona (average of $357). Flying from Milwaukee to Barcelona in June is currently the most expensive (average of $888). 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 MKE to BCN?

Find hourly flight availability from Milwaukee to Barcelona. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 14, 2025.

When flying from Milwaukee to Barcelona, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 49% versus a flight in the afternoon.

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 October 14, 2025.
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
8.0
Very good
7,975 reviews

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Delta
8.0
Very good
7,975 reviews
Delta
8.0
Very good
7,975 reviews

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
United Airlines
7.4
Good
8,976 reviews
Delta
8.0
Very good
7,975 reviews

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
American Airlines
7.2
Good
11,042 reviews
Delta
8.0
Very good
7,975 reviews

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
British Airways
6.7
Okay
7,456 reviews
Delta
8.0
Very good
7,975 reviews

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.

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, Virgin Atlantic, and Delta fly from Milwaukee to Barcelona in about 16h 04m. The time it takes to get you to your destination can typically vary by up to 1h 56m. 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 $582, 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 39% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Milwaukee to Barcelona one-way?

    To fly one-way, consider booking your trip with British Airways, which is currently one of the cheapest options available, starting at $416. American Airlines flights start at $419 while deals on United Airlines start at $593 one-way.

  • 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, November is the cheapest month in which you can book a flight from Milwaukee to Barcelona (average of $357). Flying from Milwaukee to Barcelona in June is currently the most expensive (average of $888). 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

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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 October 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$582Average$803FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$609Average$1,198FlexibilityNo cancel feeOn-time71%
DeltaCheapest$676Average$855FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$689Average$925FlexibilityNo cancel feeOn-time70%

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