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$309+ 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 8/3. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — BCN
Apr 16 — Apr 231
Thu 4/16
Thu 4/23
1 adult, Economy
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Cheap 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 March 17, 2026.

This United Airlines deal was found by Cheapflights users on 3/15. 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 11/92:50 pm
MKE
-
BCN
1 stop15h 20m
United Airlines
Fri 11/203:05 pm
BCN
-
MKE
1 stop16h 04m
United Airlines
Deal found 3/15$673
This American Airlines deal was found by Cheapflights users on 3/15. 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 11/97:03 pm
MKE
-
BCN
2 stops14h 02m
American Airlines
Fri 11/201:30 pm
BCN
-
MKE
2 stops17h 29m
American Airlines
Deal found 3/15$674
This United Airlines deal was found by Cheapflights users on 3/12. 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 12/76:00 am
MKE
-
BCN
2 stops19h 20m
United Airlines
Fri 12/1110:30 am
BCN
-
MKE
2 stops19h 09m
United Airlines
Deal found 3/12$678
This American Airlines deal was found by Cheapflights users on 3/12. 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 9/306:41 pm
MKE
-
BCN
2 stops14h 14m
American Airlines
Wed 10/148:50 am
BCN
-
MKE
2 stops15h 50m
American Airlines
Deal found 3/12$680
This KLM deal was found by Cheapflights users on 3/12. 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.
Wed 9/306:25 pm
MKE
-
BCN
2 stops13h 25m
Multiple Airlines
Wed 10/1410:55 am
BCN
-
MKE
1 stop16h 13m
Multiple Airlines
Deal found 3/12$703
This United Airlines deal was found by Cheapflights users on 3/15. 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.
Sat 12/127:00 pm
MKE
-
BCN
2 stops15h 35m
United Airlines
Tue 1/121:35 pm
BCN
-
MKE
2 stops30h 52m
United Airlines
Deal found 3/15$710
This American Airlines deal was found by Cheapflights users on 3/13. 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 11/276:48 pm
MKE
-
BCN
2 stops14h 42m
American Airlines
Fri 12/111:30 pm
BCN
-
MKE
2 stops17h 31m
American Airlines
Deal found 3/13$724
This United Airlines deal was found by Cheapflights users on 3/16. 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 11/275:21 pm
MKE
-
BCN
1 stop12h 49m
United Airlines
Fri 12/116:50 am
BCN
-
MKE
2 stops18h 18m
United Airlines
Deal found 3/16$726
This American Airlines deal was found by Cheapflights users on 3/15. 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.
Sat 12/1210:11 am
MKE
-
BCN
1 stop15h 49m
American Airlines
Tue 1/1211:05 am
BCN
-
MKE
2 stops19h 07m
American Airlines
Deal found 3/15$728
This United Airlines deal was found by Cheapflights users on 3/13. 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.
Mon 4/272:32 pm
MKE
-
BCN
1 stop15h 43m
United Airlines
Mon 5/412:15 pm
BCN
-
MKE
2 stops33h 12m
United Airlines
Deal found 3/13$733

Find 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 March 17, 2026.

Round-trip from

$733
(United Airlines)

One-way from

$309
(American Airlines)

Popular in

June

Cheapest in

October

Average price

$888
From Milwaukee-Mitchell to Barcelona
Search Deals
One-way flight from Milwaukee-Mitchell to Barcelona
Search Deals
Highest demand for flights based on searches. 24% potential increase in price ($308 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($39 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
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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 March 17, 2026.
Use the filters below to find and compare flights from Milwaukee to Barcelona that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MilwaukeeBarcelona

MKE - BCN

MKEBCN

Milwaukee-Mitchell

Mon 4/27

2:32 pm-1:15 pm

1 stop15h 43m

Barcelona-El Prat

Mon 5/4

12:15 pm-2:27 pm

2 stops33h 12m

$733

MilwaukeeBarcelona

MKE - BCN

MKEBCN

Milwaukee-Mitchell

Wed 4/29

12:13 pm-1:15 pm

1 stop18h 02m

Barcelona-El Prat

Wed 5/6

12:15 pm-1:11 pm

2 stops31h 56m

$796

MilwaukeeBarcelona

MKE - BCN

MKEBCN

Milwaukee-Mitchell

Tue 4/28

12:13 pm-9:00 am

2 stops13h 47m

Barcelona-El Prat

Tue 5/5

12:15 pm-8:48 pm

2 stops15h 33m

$819

MilwaukeeBarcelona

MKE - BCN

MKEBCN

Milwaukee-Mitchell

Wed 9/2

7:30 am-2:25 pm

2 stops23h 55m

Barcelona-El Prat

Sat 9/12

1:50 pm-10:36 pm

2 stops15h 46m

$832

MilwaukeeBarcelona

MKE - BCN

MKEBCN

Milwaukee-Mitchell

Tue 5/12

4:34 pm-11:15 pm

2 stops23h 41m

Barcelona-El Prat

Tue 5/26

7:40 am-7:36 am

2 stops30h 56m

$842
Quickest round-trip

MilwaukeeBarcelona

MKE - BCN

MKEBCN

Milwaukee-Mitchell

Thu 4/30

4:26 pm-10:35 am

1 stop11h 09m

Barcelona-El Prat

Thu 5/7

10:30 am-8:06 pm

1 stop16h 36m

$845

MilwaukeeBarcelona

MKE - BCN

MKEBCN

Milwaukee-Mitchell

Sun 5/10

6:49 am-1:15 pm

1 stop23h 26m

Barcelona-El Prat

Sun 5/24

6:40 am-5:53 pm

2 stops18h 13m

$870

MilwaukeeBarcelona

MKE - BCN

MKEBCN

Milwaukee-Mitchell

Mon 8/3

1:14 pm-12:05 pm

2 stops15h 51m

Barcelona-El Prat

Tue 8/18

10:30 am-4:26 pm

1 stop12h 56m

$960

MilwaukeeBarcelona

MKE - BCN

MKEBCN

Milwaukee-Mitchell

Tue 5/12

11:33 am-8:35 am

1 stop14h 02m

Barcelona-El Prat

Sun 5/24

12:20 pm-8:28 pm

2 stops15h 08m

$964
Cheapest one-way

MilwaukeeBarcelona

MKE - BCN

MKEBCN

Milwaukee-Mitchell

Mon 5/4

1:53 pm-10:30 pm

2 stops25h 37m

$401

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/12

Showing 1-10 of 16 resultsSorted by cheapest first
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, February is the cheapest month in which you can book a flight from Milwaukee to Barcelona (average of $363). Flying from Milwaukee to Barcelona in June is currently the most expensive (average of $854). 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.

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 March 17, 2026.
Get a feel of what it's like to fly with United Airlines,American Airlines, andBritish Airways 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.
United Airlines
7.4
Good
9,431 reviews

Comfort

7.3

Crew

8.1

Overall

7.4

Boarding

7.7

Food

6.6

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,431 reviews
United Airlines
7.4
Good
9,431 reviews

Comfort

7.3

Crew

8.1

Overall

7.4

Boarding

7.7

Food

6.6

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
American Airlines
7.1
Good
11,466 reviews
United Airlines
7.4
Good
9,431 reviews

Comfort

7.3

Crew

8.1

Overall

7.4

Boarding

7.7

Food

6.6

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
British Airways
6.7
Okay
7,797 reviews
United Airlines
7.4
Good
9,431 reviews

Comfort

7.3

Crew

8.1

Overall

7.4

Boarding

7.7

Food

6.6

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

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 3 different airlines.

  • How long is the flight from Milwaukee to Barcelona?

    Airlines like United Airlines fly from Milwaukee to Barcelona in about 15h 43m. 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 $457, British Airways will fly you from Milwaukee to Barcelona and back. In addition to British Airways, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and American Airlines - these airlines can fly you to your destination from $499 and $609, respectively. British Airways is currently priced 52% 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 $363). Flying from Milwaukee to Barcelona in June is currently the most expensive (average of $854). 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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Alternative routes for Milwaukee to Barcelona

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to Barcelona-El Prat flights
Minneapolis to Barcelona-El Prat flights
Milwaukee to Barcelona-El Prat flights

Top 3 airlines flying from Milwaukee to Barcelona

Discover the top 3 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 March 17, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$457Average$813FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$499Average$754FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$609Average$775FlexibilityNo cancel feeOn-time71%

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