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$355+ 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 10/18. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — BCN
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
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 September 11, 2025.

Round-trip from

$557
(American Airlines)

One-way from

$355
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$790
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. 23% potential increase in price ($305 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 September 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 September 11, 2025.

This American Airlines deal was found by Cheapflights users on 9/10. 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 10/296:00 amMKE - BCN
1 stop21h 00mAmerican Airlines
Thu 11/612:50 pmBCN - MKE
2 stops17h 52mAmerican Airlines
Deal found 9/10$557
This United Airlines deal was found by Cheapflights users on 9/10. 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 10/2912:04 pmMKE - BCN
2 stops14h 31mUnited Airlines
Thu 11/61:35 pmBCN - MKE
2 stops31h 23mUnited Airlines
Deal found 9/10$560
This Delta deal was found by Cheapflights users on 9/11. 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 11/1911:37 amMKE - BCN
2 stops16h 33mDelta
Tue 11/2510:55 amBCN - MKE
1 stop20h 01mDelta
Deal found 9/11$572
This Air Canada deal was found by Cheapflights users on 9/10. 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 10/298:44 amMKE - BCN
3 stops17h 51mMultiple Airlines
Thu 11/61:35 pmBCN - MKE
2 stops15h 24mMultiple Airlines
Deal found 9/10$589
This Air Canada deal was found by Cheapflights users on 9/11. 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 11/197:00 amMKE - BCN
2 stops19h 35mMultiple Airlines
Tue 11/259:55 amBCN - MKE
3 stops19h 48mMultiple Airlines
Deal found 9/11$599
This Booking.com deal was found by Cheapflights users on 9/11. 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.
Tue 10/286:39 pmMKE - BCN
2 stops31h 56mMultiple Airlines
Mon 11/106:30 pmBCN - MKE
2 stops34h 29mMultiple Airlines
Deal found 9/11$603
This Booking.com deal was found by Cheapflights users on 9/10. 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.
Sat 10/186:40 pmMKE - BCN
2 stops30h 10mMultiple Airlines
Tue 10/286:20 pmBCN - MKE
2 stops52h 12mMultiple Airlines
Deal found 9/10$604
This United Airlines deal was found by Cheapflights users on 9/11. 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 10/285:13 pmMKE - BCN
1 stop13h 52mUnited Airlines
Mon 11/101:35 pmBCN - MKE
2 stops31h 23mUnited Airlines
Deal found 9/11$610
This Delta deal was found by Cheapflights users on 9/10. 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.
Sat 10/187:00 amMKE - BCN
1 stop16h 00mDelta
Tue 10/286:00 amBCN - MKE
2 stops23h 55mDelta
Deal found 9/10$645
This British Airways deal was found by Cheapflights users on 9/10. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/242:23 pmMKE - BCN
1 stop13h 07mBritish Airways
Wed 10/110:45 amBCN - MKE
1 stop16h 15mBritish Airways
Deal found 9/10$683

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 September 11, 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 10/29

12:04 pm-8:35 am

2 stops14h 31m

Barcelona-El Prat

Thu 11/6

1:35 pm-1:58 pm

2 stops31h 23m

$560

MilwaukeeBarcelona

MKE - BCN

MKEBCN

Milwaukee-Mitchell

Sun 3/1

7:00 am-8:20 am

2 stops18h 20m

Barcelona-El Prat

Tue 3/10

12:35 pm-6:08 pm

2 stops35h 33m

$564

MilwaukeeBarcelona

MKE - BCN

MKEBCN

Milwaukee-Mitchell

Mon 3/2

10:45 am-9:00 am

2 stops15h 15m

Barcelona-El Prat

Wed 3/11

11:00 am-6:08 pm

1 stop13h 08m

$575

MilwaukeeBarcelona

MKE - BCN

MKEBCN

Milwaukee-Mitchell

Mon 3/2

10:45 am-9:00 am

2 stops15h 15m

Barcelona-El Prat

Tue 3/10

10:30 am-8:45 pm

2 stops16h 15m

$575

MilwaukeeBarcelona

MKE - BCN

MKEBCN

Milwaukee-Mitchell

Tue 3/3

10:45 am-9:00 am

2 stops15h 15m

Barcelona-El Prat

Wed 3/11

11:00 am-6:08 pm

1 stop13h 08m

$575

MilwaukeeBarcelona

MKE - BCN

MKEBCN

Milwaukee-Mitchell

Sun 3/1

12:14 pm-8:20 am

2 stops13h 06m

Barcelona-El Prat

Thu 3/12

11:00 am-6:08 pm

1 stop13h 08m

$575

MilwaukeeBarcelona

MKE - BCN

MKEBCN

Milwaukee-Mitchell

Wed 3/4

10:45 am-8:20 am

2 stops14h 35m

Barcelona-El Prat

Tue 3/10

11:00 am-6:08 pm

1 stop13h 08m

$575

MilwaukeeBarcelona

MKE - BCN

MKEBCN

Milwaukee-Mitchell

Sun 3/1

8:29 am-8:20 am

2 stops16h 51m

Barcelona-El Prat

Fri 3/13

6:50 am-10:09 pm

2 stops21h 19m

$585

MilwaukeeBarcelona

MKE - BCN

MKEBCN

Milwaukee-Mitchell

Sun 3/1

8:29 am-8:20 am

2 stops16h 51m

Barcelona-El Prat

Wed 3/11

11:00 am-6:08 pm

1 stop13h 08m

$587

MilwaukeeBarcelona

MKE - BCN

MKEBCN

Milwaukee-Mitchell

Mon 2/16

11:20 am-8:50 am

1 stop14h 30m

Barcelona-El Prat

Sun 3/8

10:40 am-8:46 pm

1 stop16h 06m

$609

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 16 results
1
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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, January is the cheapest month in which you can book a flight from Milwaukee to Barcelona (average of $523). Flying from Milwaukee to Barcelona in June is currently the most expensive (average of $1,059). 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 September 11, 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 50% 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 September 11, 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
7,960 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

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
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

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
8,937 reviews
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

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
7,960 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

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!
British Airways
6.7
Okay
7,361 reviews
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

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 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 United Airlines fly from Milwaukee to Barcelona in about 14h 31m. The time it takes to get you to your destination can typically vary by up to . The distance from Milwaukee to Barcelona is about 4368 mi.

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

    Currently priced at $580, 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 $637 and $676, respectively. United Airlines is currently priced 40% 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, January is the cheapest month in which you can book a flight from Milwaukee to Barcelona (average of $523). Flying from Milwaukee to Barcelona in June is currently the most expensive (average of $1,059). 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$580Average$791FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$637Average$1,198FlexibilityNo cancel feeOn-time71%
DeltaCheapest$676Average$866FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$689Average$871FlexibilityNo cancel feeOn-time70%

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