$507+ Cheap flights from Milwaukee (MKE) to Barcelona
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 12/12. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — BCN
Nov 29 — Dec 61
Round-trip
1 adult, Economy
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Find cheap flights from Milwaukee to Barcelona with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Milwaukee to Barcelona
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Best
Last-minute
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Cheapest flights from Milwaukee to BarcelonaExplore 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 30, 2026.
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 30, 2026.
This United Airlines deal was found by Cheapflights users on 10/25. 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.
Wed 12/910:55 am -
1 stop14h 25m
Wed 12/161:35 pm -
2 stops35h 19m
Deal found 10/25![United Airlines logo]()
$745
This KLM deal was found by Cheapflights users on 10/25. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/910:18 am -
1 stop15h 22m
Wed 12/1610:35 am -
1 stop17h 17m
Deal found 10/25![KLM logo]()
$755
This United Airlines deal was found by Cheapflights users on 10/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1110:55 am -
1 stop14h 25m
Fri 12/181:35 pm -
2 stops34h 11m
Deal found 10/27![United Airlines logo]()
$795
This Delta deal was found by Cheapflights users on 10/29. 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 12/137:00 am -
2 stops18h 35m
Sun 12/2010:50 am -
1 stop16h 58m
Deal found 10/29![Delta logo]()
$819
This United Airlines deal was found by Cheapflights users on 10/29. 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 12/135:00 am -
2 stops20h 20m
Sun 12/201:15 pm -
2 stops34h 31m
Deal found 10/29![United Airlines logo]()
$833
This Air Canada deal was found by Cheapflights users on 10/25. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/99:15 am -
2 stops17h 20m
Wed 12/169:55 am -
3 stops19h 20m
Deal found 10/25![Multiple Airlines logo]()
$849
This Air Canada deal was found by Cheapflights users on 10/25. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/99:15 am -
3 stops17h 20m
Wed 12/169:55 am -
3 stops19h 20m
Deal found 10/25![Air Canada logo]()
$857
This United Airlines deal was found by Cheapflights users on 10/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/159:15 am -
2 stops16h 45m
Fri 12/2511:00 am -
1 stop13h 54m
Deal found 10/27![United Airlines logo]()
$870
Best flights from Milwaukee to BarcelonaDiscover carefully curated flight deals from Milwaukee to Barcelona that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 30, 2026.
Discover carefully curated flight deals from Milwaukee to Barcelona that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 30, 2026.
This Expedia deal was found by Cheapflights users on 10/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/232:23 pm -
2 stops26h 42m
Tue 3/3010:15 am -
2 stops19h 24m
Deal found 10/27![Lufthansa logo]()
$774
This United Airlines deal was found by Cheapflights users on 10/28. 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 2/16:29 pm -
1 stop30h 51m
Fri 2/51:35 pm -
2 stops52h 23m
Deal found 10/28![United Airlines logo]()
$779
This United deal was found by Cheapflights users on 10/27. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/2310:45 am -
3 stops39h 50m
Tue 3/301:50 pm -
2 stops15h 49m
Deal found 10/27![Multiple Airlines logo]()
$794
This Delta deal was found by Cheapflights users on 10/29. 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 12/137:00 am -
2 stops18h 35m
Sun 12/2010:50 am -
1 stop16h 58m
Deal found 10/29![Delta logo]()
$819
This United Airlines deal was found by Cheapflights users on 10/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1110:55 am -
1 stop14h 25m
Fri 12/181:35 pm -
2 stops34h 11m
Deal found 10/27![United Airlines logo]()
$795
This United deal was found by Cheapflights users on 10/27. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/296:29 pm -
1 stop30h 51m
Mon 2/86:40 pm -
2 stops53h 06m
Deal found 10/27![Multiple Airlines logo]()
$846
This United Airlines deal was found by Cheapflights users on 10/29. 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 12/135:00 am -
2 stops20h 20m
Sun 12/201:15 pm -
2 stops34h 31m
Deal found 10/29![United Airlines logo]()
$833
Last-minute flights from Milwaukee to BarcelonaDiscover last-minute flight deals from Milwaukee to Barcelona. Data last updated October 30, 2026 and is based on user searches.
Discover last-minute flight deals from Milwaukee to Barcelona. Data last updated October 30, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 10/26. 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.
Fri 11/202:23 pm -
2 stops15h 37m
Sun 11/223:10 pm -
1 stop14h 05m
Deal found 10/26![United Airlines logo]()
$1,357
This KAYAK deal was found by Cheapflights users on 10/26. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2011:07 am -
1 stop14h 13m
Sun 11/223:10 pm -
1 stop14h 05m
Deal found 10/26![Lufthansa logo]()
$1,978
One-way flights from Milwaukee to BarcelonaSearch for one-way flight options from Milwaukee to Barcelona. Find affordable one-way fares based on user searches. Data last updated October 30, 2026.
Search for one-way flight options from Milwaukee to Barcelona. Find affordable one-way fares based on user searches. Data last updated October 30, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 10/27. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/1211:23 am -
2 stops16h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Aer Lingus logo]()
$507
This Kiwi.com deal was found by Cheapflights users on 10/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/124:25 pm -
3 stops59h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Multiple Airlines logo]()
$592
This TravelUp deal was found by Cheapflights users on 10/27. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/1210:55 am -
1 stop14h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Lufthansa logo]()
$610
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 October 30, 2026.
Round-trip from | $745 (United Airlines) |
|---|---|
One-way from | $507 (Cheapflightsfares) |
Popular in | May |
Cheapest in | January |
Average price | $885 |
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 7,457,451 searches. Data last updated October 30, 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
Cheapest round-trip
MilwaukeeBarcelona
MKE Milwaukee-Mitchell - BCN Barcelona-El Prat
MKEBCN
Milwaukee-Mitchell
Sat 12/12
11:23 am-10:50 am
2 stops16h 27m
Barcelona-El Prat
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$507
MilwaukeeBarcelona
MKE Milwaukee-Mitchell - BCN Barcelona-El Prat
MKEBCN
Milwaukee-Mitchell
Sat 12/12
4:25 pm-11:20 am
3 stops59h 55m
Barcelona-El Prat
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$592
Quickest round-trip
MilwaukeeBarcelona
MKE Milwaukee-Mitchell - BCN Barcelona-El Prat
MKEBCN
Milwaukee-Mitchell
Sat 12/12
10:55 am-8:20 am
1 stop14h 25m
Barcelona-El Prat
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$610
MilwaukeeBarcelona
MKE Milwaukee-Mitchell - BCN Barcelona-El Prat
MKEBCN
Milwaukee-Mitchell
Tue 3/23
2:23 pm-11:05 pm
2 stops26h 42m
Barcelona-El Prat
Tue 3/30
10:15 am-10:39 pm
2 stops19h 24m
$774
MilwaukeeBarcelona
MKE Milwaukee-Mitchell - BCN Barcelona-El Prat
MKEBCN
Milwaukee-Mitchell
Mon 2/1
6:29 pm-8:20 am
1 stop30h 51m
Barcelona-El Prat
Fri 2/5
1:35 pm-10:58 am
2 stops52h 23m
$779
MilwaukeeBarcelona
MKE Milwaukee-Mitchell - BCN Barcelona-El Prat
MKEBCN
Milwaukee-Mitchell
Tue 3/23
10:45 am-8:35 am
3 stops39h 50m
Barcelona-El Prat
Tue 3/30
1:50 pm-10:39 pm
2 stops15h 49m
$794
MilwaukeeBarcelona
MKE Milwaukee-Mitchell - BCN Barcelona-El Prat
MKEBCN
Milwaukee-Mitchell
Fri 12/11
10:55 am-8:20 am
1 stop14h 25m
Barcelona-El Prat
Fri 12/18
1:35 pm-4:46 pm
2 stops34h 11m
$795
MilwaukeeBarcelona
MKE Milwaukee-Mitchell - BCN Barcelona-El Prat
MKEBCN
Milwaukee-Mitchell
Sun 12/13
7:00 am-8:35 am
2 stops18h 35m
Barcelona-El Prat
Sun 12/20
10:50 am-8:48 pm
1 stop16h 58m
$819
MilwaukeeBarcelona
MKE Milwaukee-Mitchell - BCN Barcelona-El Prat
MKEBCN
Milwaukee-Mitchell
Sun 12/13
5:00 am-8:20 am
2 stops20h 20m
Barcelona-El Prat
Sun 12/20
1:15 pm-4:46 pm
2 stops34h 31m
$833
MilwaukeeBarcelona
MKE Milwaukee-Mitchell - BCN Barcelona-El Prat
MKEBCN
Milwaukee-Mitchell
Fri 1/29
6:29 pm-8:20 am
1 stop30h 51m
Barcelona-El Prat
Mon 2/8
6:40 pm-4:46 pm
2 stops53h 06m
$846
Sorted by cheapest first
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.
MKE-S37
MKE-BCN
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
MKE-S37
MKE-BCN
No data available for this route at this time. Please check back soon.
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 30, 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.
Entertainment
7.1
Overall
7.3
Crew
8.1
Food
6.7
Comfort
7.3
Boarding
7.7
Reviews
1 / 20
8.0
ExcellentAsha,Sep 2026
LGA - IAH
Entertainment
7.1
Overall
7.3
Crew
8.1
Food
6.7
Comfort
7.3
Boarding
7.7
Reviews
1 / 20
8.0
ExcellentAsha,Sep 2026
LGA - IAH
Entertainment
7.1
Overall
7.3
Crew
8.1
Food
6.7
Comfort
7.3
Boarding
7.7
Reviews
1 / 20
8.0
ExcellentAsha,Sep 2026
LGA - IAH
Entertainment
7.1
Overall
7.3
Crew
8.1
Food
6.7
Comfort
7.3
Boarding
7.7
Reviews
1 / 20
8.0
ExcellentAsha,Sep 2026
LGA - IAH
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.
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Alternative routes for Milwaukee to Barcelona
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Complete your trip
Complete your trip to Barcelona by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Milwaukee to Barcelona by cabin class
Find flights from Milwaukee to Barcelona, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Milwaukee and Barcelona flights
Browse other Milwaukee and Barcelona flight options. Last updated on October 30, 2026.
Other flights from Milwaukee
Browse through other flights departing from Milwaukee. Flights are based on user searches made on Cheapflights and were last updated on October 30, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 7,457,451 searches. Data last updated October 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$457 | Average$885 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$676 | Average$1,370 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$693 | Average$845 | FlexibilityNo cancel fee | On-time71% |