$539+ 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 7/15. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — BCN
Jul 27 — Aug 31
Round-trip
1 adult, Economy
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Find cheap flights from Milwaukee to Barcelona with Cheapflights
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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 June 27, 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 June 27, 2026.
This Virgin Atlantic deal was found by Cheapflights users on 6/23. 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.
Thu 10/82:45 pm
MKE
- BCN
1 stop15h 05m
Virgin Atlantic
Fri 10/1611:00 am
BCN
- MKE
1 stop19h 49m
Virgin Atlantic
Deal found 6/23![Virgin Atlantic logo]()
$548
This United Airlines deal was found by Cheapflights users on 6/26. 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.
Mon 9/2810:42 am
MKE
- BCN
1 stop19h 33m
United Airlines
Tue 10/61:15 pm
BCN
- MKE
2 stops27h 45m
United Airlines
Deal found 6/26![United Airlines logo]()
$757
This FlightHub deal was found by Cheapflights users on 6/24. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/286:32 pm
MKE
- BCN
2 stops16h 23m
Lufthansa
Tue 10/612:40 pm
BCN
- MKE
2 stops17h 19m
Lufthansa
Deal found 6/24![Lufthansa logo]()
$771
This United Airlines deal was found by Cheapflights users on 6/26. 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 11/279:30 am
MKE
- BCN
1 stop20h 45m
United Airlines
Fri 12/111:35 pm
BCN
- MKE
2 stops30h 52m
United Airlines
Deal found 6/26![United Airlines logo]()
$802
This Justfly.com deal was found by Cheapflights users on 6/24. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/276:18 pm
MKE
- BCN
2 stops21h 47m
Multiple Airlines
Fri 12/111:35 pm
BCN
- MKE
2 stops40h 04m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$804
This United Airlines deal was found by Cheapflights users on 6/23. 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 10/83:52 pm
MKE
- BCN
2 stops15h 33m
United Airlines
Fri 10/168:00 am
BCN
- MKE
2 stops22h 37m
United Airlines
Deal found 6/23![United Airlines logo]()
$834
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 June 27, 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 June 27, 2026.
This United Airlines deal was found by Cheapflights users on 6/24. 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 9/286:32 pm
MKE
- BCN
1 stop11h 43m
United Airlines
Tue 10/63:15 pm
BCN
- MKE
1 stop13h 10m
United Airlines
Deal found 6/24![United Airlines logo]()
$773
This Travelocity deal was found by Cheapflights users on 6/22. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/59:36 am
MKE
- BCN
2 stops16h 54m
Multiple Airlines
Mon 9/148:00 am
BCN
- MKE
2 stops33h 35m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$918
This United Airlines deal was found by Cheapflights users on 6/26. 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 11/279:30 am
MKE
- BCN
1 stop20h 45m
United Airlines
Fri 12/111:35 pm
BCN
- MKE
2 stops30h 52m
United Airlines
Deal found 6/26![United Airlines logo]()
$802
This United deal was found by Cheapflights users on 6/25. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/135:00 am
MKE
- BCN
2 stops20h 00m
Multiple Airlines
Thu 8/2712:15 pm
BCN
- MKE
2 stops41h 21m
Multiple Airlines
Deal found 6/25![Multiple Airlines logo]()
$922
This United Airlines deal was found by Cheapflights users on 6/25. 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.
Thu 10/86:15 am
MKE
- BCN
2 stops25h 10m
United Airlines
Sun 10/1810:25 am
BCN
- MKE
2 stops27h 42m
United Airlines
Deal found 6/25![United Airlines logo]()
$883
Last-minute flights from Milwaukee to BarcelonaDiscover last-minute flight deals from Milwaukee to Barcelona. Data last updated June 27, 2026 and is based on user searches.
Discover last-minute flight deals from Milwaukee to Barcelona. Data last updated June 27, 2026 and is based on user searches.
This Ovago deal was found by Cheapflights users on 6/26. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/69:36 am
MKE
- BCN
1 stop17h 09m
JetBlue
Wed 7/2212:50 pm
BCN
- MKE
1 stop26h 55m
JetBlue
Deal found 6/26![JetBlue logo]()
$1,096
This KAYAK deal was found by Cheapflights users on 6/26. 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.
Wed 7/159:35 am
MKE
- BCN
1 stop17h 10m
JetBlue
Wed 8/1912:50 pm
BCN
- MKE
1 stop26h 54m
JetBlue
Deal found 6/26![JetBlue logo]()
$1,020
This KAYAK deal was found by Cheapflights users on 6/24. 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.
Wed 7/159:35 am
MKE
- BCN
1 stop17h 10m
JetBlue
Wed 8/1212:50 pm
BCN
- MKE
1 stop26h 54m
JetBlue
Deal found 6/24![JetBlue logo]()
$1,092
This Delta deal was found by Cheapflights users on 6/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/154:47 pm
MKE
- BCN
2 stops15h 03m
Delta
Wed 8/1911:00 am
BCN
- MKE
1 stop16h 09m
Delta
Deal found 6/26![Delta logo]()
$1,100
This KAYAK deal was found by Cheapflights users on 6/25. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/179:35 am
MKE
- BCN
1 stop17h 10m
JetBlue
Wed 8/1212:50 pm
BCN
- MKE
1 stop26h 54m
JetBlue
Deal found 6/25![JetBlue logo]()
$1,095
This KAYAK deal was found by Cheapflights users on 6/24. 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.
Mon 7/209:35 am
MKE
- BCN
1 stop17h 10m
JetBlue
Wed 8/1212:50 pm
BCN
- MKE
1 stop26h 54m
JetBlue
Deal found 6/24![JetBlue logo]()
$1,015
This American Airlines deal was found by Cheapflights users on 6/24. 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 7/227:25 am
MKE
- BCN
1 stop20h 20m
American Airlines
Wed 8/1212:50 pm
BCN
- MKE
1 stop17h 24m
American Airlines
Deal found 6/24![American Airlines logo]()
$975
This United Airlines deal was found by Cheapflights users on 6/24. 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 7/228:50 am
MKE
- BCN
2 stops16h 30m
United Airlines
Wed 8/1211:15 am
BCN
- MKE
2 stops14h 40m
United Airlines
Deal found 6/24![United Airlines logo]()
$979
This Delta deal was found by Cheapflights users on 6/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/226:40 pm
MKE
- BCN
2 stops14h 45m
Delta
Wed 8/196:20 am
BCN
- MKE
2 stops18h 57m
Delta
Deal found 6/25![Delta logo]()
$1,109
This United Airlines deal was found by Cheapflights users on 6/26. 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.
Mon 7/276:20 am
MKE
- BCN
2 stops19h 00m
United Airlines
Tue 8/113:15 pm
BCN
- MKE
1 stop22h 52m
United Airlines
Deal found 6/26![United Airlines logo]()
$881
This Air France deal was found by Cheapflights users on 6/26. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/2711:35 am
MKE
- BCN
2 stops14h 25m
Multiple Airlines
Tue 8/119:20 am
BCN
- MKE
2 stops15h 57m
Multiple Airlines
Deal found 6/26![Multiple Airlines logo]()
$909
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 June 27, 2026.
Search for one-way flight options from Milwaukee to Barcelona. Find affordable one-way fares based on user searches. Data last updated June 27, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 6/23. 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.
Wed 7/151:15 pm
MKE
- BCN
2 stops26h 15m
Aer Lingus
Deal found 6/23![Aer Lingus logo]()
$539
This Cheapflightsfares deal was found by Cheapflights users on 6/25. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/71:15 pm
MKE
- BCN
2 stops26h 15m
Aer Lingus
Deal found 6/25![Aer Lingus logo]()
$545
This Mytrip deal was found by Cheapflights users on 6/25. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/76:40 pm
MKE
- BCN
3 stops32h 25m
WestJet
Deal found 6/25![WestJet logo]()
$554
This Cheapflightsfares deal was found by Cheapflights users on 6/25. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/159:35 am
MKE
- BCN
1 stop17h 10m
JetBlue
Deal found 6/25![JetBlue logo]()
$585
This Virgin Atlantic deal was found by Cheapflights users on 6/25. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/75:42 pm
MKE
- BCN
1 stop12h 08m
Virgin Atlantic
Deal found 6/25![Virgin Atlantic logo]()
$690
This Delta deal was found by Cheapflights users on 6/23. 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 7/1511:35 am
MKE
- BCN
1 stop14h 00m
Delta
Deal found 6/23![Delta logo]()
$693
This Air Canada deal was found by Cheapflights users on 6/23. 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 7/157:50 am
MKE
- BCN
3 stops17h 10m
Air Canada
Deal found 6/23![Air Canada logo]()
$929
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 June 27, 2026.
Round-trip from | $548 (Virgin Atlantic) |
|---|---|
One-way from | $539 (Cheapflightsfares) |
Popular in | May |
Cheapest in | November |
Average price | $1,391 |
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 June 27, 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
Quickest round-trip
MilwaukeeBarcelona
MKE - BCN
MKEBCN
Milwaukee-Mitchell
Mon 9/28
6:32 pm-1:15 pm
1 stop11h 43m
Barcelona-El Prat
Tue 10/6
3:15 pm-9:25 pm
1 stop13h 10m
$773
MilwaukeeBarcelona
MKE - BCN
MKEBCN
Milwaukee-Mitchell
Fri 11/27
9:30 am-1:15 pm
1 stop20h 45m
Barcelona-El Prat
Fri 12/11
1:35 pm-1:27 pm
2 stops30h 52m
$802
MilwaukeeBarcelona
MKE - BCN
MKEBCN
Milwaukee-Mitchell
Thu 10/8
6:15 am-2:25 pm
2 stops25h 10m
Barcelona-El Prat
Sun 10/18
10:25 am-7:07 am
2 stops27h 42m
$883
MilwaukeeBarcelona
MKE - BCN
MKEBCN
Milwaukee-Mitchell
Sat 9/5
9:36 am-9:30 am
2 stops16h 54m
Barcelona-El Prat
Mon 9/14
8:00 am-10:35 am
2 stops33h 35m
$918
MilwaukeeBarcelona
MKE - BCN
MKEBCN
Milwaukee-Mitchell
Thu 8/13
5:00 am-8:00 am
2 stops20h 00m
Barcelona-El Prat
Thu 8/27
12:15 pm-10:36 pm
2 stops41h 21m
$922
Cheapest one-way
MilwaukeeBarcelona
MKE - BCN
MKEBCN
Milwaukee-Mitchell
Wed 7/15
1:15 pm-10:30 pm
2 stops26h 15m
$539
MilwaukeeBarcelona
MKE - BCN
MKEBCN
Milwaukee-Mitchell
Tue 7/7
6:40 pm-10:05 am
3 stops32h 25m
$554
MilwaukeeBarcelona
MKE - BCN
MKEBCN
Milwaukee-Mitchell
Wed 7/15
9:35 am-9:45 am
1 stop17h 10m
$585
Quickest one-way
MilwaukeeBarcelona
MKE - BCN
MKEBCN
Milwaukee-Mitchell
Tue 7/7
5:42 pm-12:50 pm
1 stop12h 08m
$690
MilwaukeeBarcelona
MKE - BCN
MKEBCN
Milwaukee-Mitchell
Wed 7/15
11:35 am-8:35 am
1 stop14h 00m
$693
Showing 1-10 of 11 resultsSorted 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 June 27, 2026.
Get a feel of what it's like to fly with Delta,United Airlines, andAmerican 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.
Entertainment
7.8
Comfort
7.8
Overall
7.8
Crew
8.5
Boarding
8.1
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Comfort
7.8
Overall
7.8
Crew
8.5
Boarding
8.1
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Comfort
7.8
Overall
7.8
Crew
8.5
Boarding
8.1
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Comfort
7.8
Overall
7.8
Crew
8.5
Boarding
8.1
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Comfort
7.8
Overall
7.8
Crew
8.5
Boarding
8.1
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
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 June 27, 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 June 27, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 June 27, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$457 | Average$698 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$499 | Average$1,355 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$609 | Average$775 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$689 | Average$989 | FlexibilityNo cancel fee | On-timeN/A |