$377+ 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
Aug 8 — Aug 151
Round-trip
1 adult, Economy
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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 July 9, 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 July 9, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 7/6. 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 11/182:23 pm
MKE
- BCN
2 stops20h 12m
Lufthansa
Wed 11/256:50 am
BCN
- MKE
2 stops23h 37m
Lufthansa
Deal found 7/6![Lufthansa logo]()
$773
This United Airlines deal was found by Cheapflights users on 7/6. 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 7/6![United Airlines logo]()
$787
This FlightHub deal was found by Cheapflights users on 7/6. 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 9/285:00 am
MKE
- BCN
2 stops20h 00m
Air Canada
Tue 10/61:15 pm
BCN
- MKE
2 stops27h 45m
Air Canada
Deal found 7/6![Air Canada logo]()
$791
This Cheapflightsfares deal was found by Cheapflights users on 7/9. 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.
Mon 9/286:32 pm
MKE
- BCN
2 stops20h 53m
Lufthansa
Tue 10/66:40 am
BCN
- MKE
2 stops21h 45m
Lufthansa
Deal found 7/9![Lufthansa logo]()
$801
This Justfly.com deal was found by Cheapflights users on 7/7. 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 7/7![Multiple Airlines logo]()
$804
This FlightHub deal was found by Cheapflights users on 7/9. 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.
Fri 11/278:30 am
MKE
- BCN
2 stops18h 05m
Air Canada
Fri 12/111:35 pm
BCN
- MKE
2 stops40h 04m
Air Canada
Deal found 7/9![Air Canada logo]()
$806
This Air Canada deal was found by Cheapflights users on 7/7. 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.
Mon 9/288:30 am
MKE
- BCN
3 stops16h 30m
Multiple Airlines
Tue 10/61:15 pm
BCN
- MKE
2 stops16h 44m
Multiple Airlines
Deal found 7/7![Multiple Airlines logo]()
$822
This United Airlines deal was found by Cheapflights users on 7/9. 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 11/273:48 pm
MKE
- BCN
1 stop14h 27m
United Airlines
Fri 12/1111:00 am
BCN
- MKE
1 stop19h 27m
United Airlines
Deal found 7/9![United Airlines logo]()
$823
This United Airlines deal was found by Cheapflights users on 7/7. 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 10/66:00 am
MKE
- BCN
1 stop20h 00m
United Airlines
Sat 10/176:00 am
BCN
- MKE
2 stops23h 59m
United Airlines
Deal found 7/7![United Airlines logo]()
$828
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 July 9, 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 July 9, 2026.
This United Airlines deal was found by Cheapflights users on 7/6. 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 7/6![United Airlines logo]()
$787
This United Airlines deal was found by Cheapflights users on 7/5. 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 7/5![United Airlines logo]()
$803
Last-minute flights from Milwaukee to BarcelonaDiscover last-minute flight deals from Milwaukee to Barcelona. Data last updated July 9, 2026 and is based on user searches.
Discover last-minute flight deals from Milwaukee to Barcelona. Data last updated July 9, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 7/5. 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 8/28:50 am
MKE
- BCN
1 stop21h 25m
United Airlines
Tue 8/183:15 pm
BCN
- MKE
1 stop22h 52m
United Airlines
Deal found 7/5![United Airlines logo]()
$889
This American Airlines deal was found by Cheapflights users on 7/5. 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.
Sun 8/27:03 pm
MKE
- BCN
2 stops15h 02m
American Airlines
Tue 8/187:40 am
BCN
- MKE
2 stops17h 38m
American Airlines
Deal found 7/5![American Airlines logo]()
$900
This Expedia deal was found by Cheapflights users on 7/6. 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.
Mon 8/34:17 pm
MKE
- BCN
1 stop13h 33m
Multiple Airlines
Mon 8/107:45 pm
BCN
- MKE
2 stops27h 17m
Multiple Airlines
Deal found 7/6![Multiple Airlines logo]()
$935
This Flighttix deal was found by Cheapflights users on 7/6. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/312:51 pm
MKE
- BCN
1 stop16h 59m
Virgin Atlantic
Mon 8/1011:00 am
BCN
- MKE
1 stop19h 53m
Virgin Atlantic
Deal found 7/6![Virgin Atlantic logo]()
$958
This Air France deal was found by Cheapflights users on 7/6. 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 8/311:31 am
MKE
- BCN
1 stop14h 04m
Air France
Mon 8/1011:00 am
BCN
- MKE
1 stop13h 38m
Air France
Deal found 7/6![Air France logo]()
$972
This Delta deal was found by Cheapflights users on 7/4. 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.
Mon 8/312:51 pm
MKE
- BCN
1 stop16h 59m
Delta
Mon 8/1011:00 am
BCN
- MKE
1 stop16h 53m
Delta
Deal found 7/4![Delta logo]()
$979
This British Airways deal was found by Cheapflights users on 7/8. 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.
Tue 8/183:39 pm
MKE
- BCN
2 stops17h 01m
British Airways
Sun 8/3010:30 am
BCN
- MKE
1 stop16h 29m
British Airways
Deal found 7/8![British Airways logo]()
$946
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 July 9, 2026.
Search for one-way flight options from Milwaukee to Barcelona. Find affordable one-way fares based on user searches. Data last updated July 9, 2026.
This FlightHub deal was found by Cheapflights users on 7/5. 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.
Sat 10/2412:05 pm
MKE
- BCN
2 stops38h 30m
Air Canada
Deal found 7/5![Air Canada logo]()
$377
This FlightHub deal was found by Cheapflights users on 7/5. 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.
Sat 10/247:19 pm
MKE
- BCN
1 stop32h 16m
British Airways
Deal found 7/5![British Airways logo]()
$387
This Justfly.com deal was found by Cheapflights users on 7/9. 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.
Wed 9/2311:25 am
MKE
- BCN
1 stop15h 20m
JetBlue
Deal found 7/9![JetBlue logo]()
$427
This Kiwi.com deal was found by Cheapflights users on 7/7. 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.
Sun 9/278:10 pm
MKE
- BCN
2 stops39h 15m
Multiple Airlines
Deal found 7/7![Multiple Airlines logo]()
$438
This Cheapflightsfares deal was found by Cheapflights users on 7/6. 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 7/6![JetBlue logo]()
$451
This Kiwi.com deal was found by Cheapflights users on 7/7. 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.
Fri 10/28:10 pm
MKE
- BCN
3 stops53h 05m
Multiple Airlines
Deal found 7/7![Multiple Airlines logo]()
$460
This TravelUp deal was found by Cheapflights users on 7/9. 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.
Sun 9/611:18 am
MKE
- BCN
1 stop18h 57m
Lufthansa
Deal found 7/9![Lufthansa logo]()
$461
This Virgin Atlantic deal was found by Cheapflights users on 7/9. 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.
Sun 9/69:40 am
MKE
- BCN
2 stops15h 55m
Virgin Atlantic
Deal found 7/9![Virgin Atlantic logo]()
$463
This Justfly.com deal was found by Cheapflights users on 7/9. 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.
Thu 9/2411:25 am
MKE
- BCN
1 stop15h 20m
JetBlue
Deal found 7/9![JetBlue logo]()
$468
This Air Canada deal was found by Cheapflights users on 7/9. 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.
Sun 9/68:30 am
MKE
- BCN
3 stops16h 30m
Air Canada
Deal found 7/9![Air Canada logo]()
$475
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 July 9, 2026.
Round-trip from | $773 (Cheapflightsfares) |
|---|---|
One-way from | $377 (FlightHub) |
Popular in | May |
Cheapest in | November |
Average price | $1,326 |
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 July 9, 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
10:42 am-1:15 pm
1 stop19h 33m
Barcelona-El Prat
Tue 10/6
1:15 pm-10:00 am
2 stops27h 45m
$787
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
$803
Cheapest one-way
MilwaukeeBarcelona
MKE - BCN
MKEBCN
Milwaukee-Mitchell
Sat 10/24
12:05 pm-9:35 am
2 stops38h 30m
$377
MilwaukeeBarcelona
MKE - BCN
MKEBCN
Milwaukee-Mitchell
Sun 9/27
8:10 pm-6:25 pm
2 stops39h 15m
$438
MilwaukeeBarcelona
MKE - BCN
MKEBCN
Milwaukee-Mitchell
Wed 7/15
9:35 am-9:45 am
1 stop17h 10m
$451
MilwaukeeBarcelona
MKE - BCN
MKEBCN
Milwaukee-Mitchell
Fri 10/2
8:10 pm-8:15 am
3 stops53h 05m
$460
MilwaukeeBarcelona
MKE - BCN
MKEBCN
Milwaukee-Mitchell
Sun 9/27
3:52 pm-1:15 pm
1 stop14h 23m
$461
MilwaukeeBarcelona
MKE - BCN
MKEBCN
Milwaukee-Mitchell
Sun 9/6
9:40 am-8:35 am
2 stops15h 55m
$463
MilwaukeeBarcelona
MKE - BCN
MKEBCN
Milwaukee-Mitchell
Fri 9/25
1:28 pm-12:50 pm
2 stops16h 22m
$513
Quickest one-way
MilwaukeeBarcelona
MKE - BCN
MKEBCN
Milwaukee-Mitchell
Fri 10/2
11:35 am-8:35 am
1 stop14h 00m
$513
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 July 9, 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
Boarding
8.1
Comfort
7.8
Crew
8.5
Food
7.2
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Crew
8.5
Food
7.2
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Crew
8.5
Food
7.2
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Crew
8.5
Food
7.2
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Crew
8.5
Food
7.2
Overall
7.8
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 July 9, 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 July 9, 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 July 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$457 | Average$698 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$508 | Average$1,370 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$609 | Average$807 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$689 | Average$989 | FlexibilityNo cancel fee | On-timeN/A |