$374+ 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 24 — Aug 311
Round-trip
1 adult, Economy
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Find cheap flights from Milwaukee to Barcelona with Cheapflights
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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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Cheapest
Best
Last-minute
One-way
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 25, 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 25, 2026.
This United Airlines deal was found by Cheapflights users on 7/24. 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.
Sat 10/246:38 pm
MKE
- BCN
1 stop31h 42m
United Airlines
Wed 11/113:10 pm
BCN
- MKE
1 stop12h 40m
United Airlines
Deal found 7/24![United Airlines logo]()
$784
This Cheapflightsfares deal was found by Cheapflights users on 7/21. 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 7/21![Lufthansa logo]()
$801
This United Airlines deal was found by Cheapflights users on 7/21. 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 7/21![United Airlines logo]()
$803
This American Airlines deal was found by Cheapflights users on 7/25. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/288:14 pm
MKE
- BCN
2 stops14h 21m
American Airlines
Tue 10/612:50 pm
BCN
- MKE
1 stop17h 24m
American Airlines
Deal found 7/25![American Airlines logo]()
$804
This United Airlines deal was found by Cheapflights users on 7/24. 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.
Sun 9/278:30 am
MKE
- BCN
2 stops16h 50m
United Airlines
Thu 10/811:15 am
BCN
- MKE
2 stops14h 55m
United Airlines
Deal found 7/24![United Airlines logo]()
$812
This British Airways deal was found by Cheapflights users on 7/24. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/212:58 pm
MKE
- BCN
2 stops14h 07m
British Airways
Wed 11/119:15 am
BCN
- MKE
2 stops20h 22m
British Airways
Deal found 7/24![British Airways logo]()
$815
This United Airlines deal was found by Cheapflights users on 7/24. 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 9/3010:42 am
MKE
- BCN
2 stops15h 38m
United Airlines
Fri 10/93:15 pm
BCN
- MKE
1 stop14h 44m
United Airlines
Deal found 7/24![United Airlines logo]()
$816
This FlightHub deal was found by Cheapflights users on 7/23. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/296:32 pm
MKE
- BCN
2 stops21h 33m
Lufthansa
Wed 10/71:50 pm
BCN
- MKE
2 stops16h 09m
Lufthansa
Deal found 7/23![Lufthansa logo]()
$817
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 25, 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 25, 2026.
This United Airlines deal was found by Cheapflights users on 7/21. 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 7/21![United Airlines logo]()
$803
This Cheapflightsfares deal was found by Cheapflights users on 7/25. 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.
Mon 9/286:32 pm
MKE
- BCN
2 stops20h 53m
Lufthansa
Tue 10/68:00 am
BCN
- MKE
2 stops21h 59m
Lufthansa
Deal found 7/25![Lufthansa logo]()
$806
This United Airlines deal was found by Cheapflights users on 7/24. 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.
Tue 10/2011:35 am
MKE
- BCN
1 stop14h 25m
United Airlines
Fri 11/1311:00 am
BCN
- MKE
1 stop14h 06m
United Airlines
Deal found 7/24![United Airlines logo]()
$808
This United Airlines deal was found by Cheapflights users on 7/24. 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.
Sun 10/183:52 pm
MKE
- BCN
1 stop14h 23m
United Airlines
Tue 11/1011:00 am
BCN
- MKE
1 stop18h 47m
United Airlines
Deal found 7/24![United Airlines logo]()
$808
This United Airlines deal was found by Cheapflights users on 7/24. 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.
Sun 9/277:18 am
MKE
- BCN
2 stops17h 42m
United Airlines
Tue 10/63:15 pm
BCN
- MKE
1 stop22h 52m
United Airlines
Deal found 7/24![United Airlines logo]()
$811
This United Airlines deal was found by Cheapflights users on 7/24. 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.
Fri 10/238:30 am
MKE
- BCN
2 stops16h 30m
United Airlines
Wed 10/283:10 pm
BCN
- MKE
1 stop13h 05m
United Airlines
Deal found 7/24![United Airlines logo]()
$831
This United Airlines deal was found by Cheapflights users on 7/24. 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.
Thu 10/12:20 pm
MKE
- BCN
1 stop15h 55m
United Airlines
Fri 10/93:15 pm
BCN
- MKE
1 stop14h 44m
United Airlines
Deal found 7/24![United Airlines logo]()
$858
This United Airlines deal was found by Cheapflights users on 7/25. 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 10/82:20 pm
MKE
- BCN
2 stops17h 05m
United Airlines
Sun 10/1810:25 am
BCN
- MKE
2 stops27h 42m
United Airlines
Deal found 7/25![United Airlines logo]()
$918
Last-minute flights from Milwaukee to BarcelonaDiscover last-minute flight deals from Milwaukee to Barcelona. Data last updated July 25, 2026 and is based on user searches.
Discover last-minute flight deals from Milwaukee to Barcelona. Data last updated July 25, 2026 and is based on user searches.
This Ovago deal was found by Cheapflights users on 7/22. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/99:36 am
MKE
- BCN
1 stop17h 09m
JetBlue
Fri 8/2112:50 pm
BCN
- MKE
1 stop26h 54m
JetBlue
Deal found 7/22![JetBlue logo]()
$946
This Ovago deal was found by Cheapflights users on 7/22. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/99:36 am
MKE
- BCN
1 stop17h 09m
JetBlue
Thu 8/2012:50 pm
BCN
- MKE
1 stop26h 54m
JetBlue
Deal found 7/22![JetBlue logo]()
$982
This Ovago deal was found by Cheapflights users on 7/22. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/99:36 am
MKE
- BCN
1 stop17h 09m
JetBlue
Wed 8/1912:50 pm
BCN
- MKE
1 stop26h 54m
JetBlue
Deal found 7/22![JetBlue logo]()
$1,028
This Delta deal was found by Cheapflights users on 7/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/94:47 pm
MKE
- BCN
2 stops15h 48m
Delta
Thu 8/2011:00 am
BCN
- MKE
1 stop13h 38m
Delta
Deal found 7/22![Delta logo]()
$1,037
This KAYAK deal was found by Cheapflights users on 7/22. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/109:36 am
MKE
- BCN
1 stop17h 09m
JetBlue
Thu 8/2012:50 pm
BCN
- MKE
1 stop26h 54m
JetBlue
Deal found 7/22![JetBlue logo]()
$981
This Virgin Atlantic deal was found by Cheapflights users on 7/22. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/109:40 am
MKE
- BCN
2 stops15h 55m
Virgin Atlantic
Thu 8/2011:00 am
BCN
- MKE
1 stop13h 38m
Virgin Atlantic
Deal found 7/22![Virgin Atlantic logo]()
$1,035
This Gurufare deal was found by Cheapflights users on 7/22. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/119:36 am
MKE
- BCN
1 stop17h 09m
JetBlue
Wed 8/1912:50 pm
BCN
- MKE
1 stop26h 54m
JetBlue
Deal found 7/22![JetBlue logo]()
$1,020
This Delta deal was found by Cheapflights users on 7/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1211:31 am
MKE
- BCN
1 stop14h 04m
Delta
Thu 8/2011:00 am
BCN
- MKE
1 stop13h 38m
Delta
Deal found 7/22![Delta logo]()
$1,033
This Delta deal was found by Cheapflights users on 7/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/126:48 pm
MKE
- BCN
2 stops14h 37m
Delta
Fri 8/2110:55 am
BCN
- MKE
1 stop15h 29m
Delta
Deal found 7/22![Delta logo]()
$1,041
This Ovago deal was found by Cheapflights users on 7/20. 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.
Fri 8/149:36 am
MKE
- BCN
1 stop17h 09m
JetBlue
Tue 8/2512:50 pm
BCN
- MKE
1 stop26h 54m
JetBlue
Deal found 7/20![JetBlue logo]()
$947
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 25, 2026.
Search for one-way flight options from Milwaukee to Barcelona. Find affordable one-way fares based on user searches. Data last updated July 25, 2026.
This United Airlines deal was found by Cheapflights users on 7/24. 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.
Sat 10/246:38 pm
MKE
- BCN
1 stop31h 42m
United Airlines
Deal found 7/24![United Airlines logo]()
$374
This KAYAK deal was found by Cheapflights users on 7/24. 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.
Sat 10/246:47 pm
MKE
- BCN
2 stops43h 08m
Lufthansa
Deal found 7/24![Lufthansa logo]()
$397
This FlightHub deal was found by Cheapflights users on 7/24. 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.
Thu 10/222:58 pm
MKE
- BCN
1 stop12h 37m
British Airways
Deal found 7/24![British Airways logo]()
$411
This United Airlines deal was found by Cheapflights users on 7/24. 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.
Fri 10/236:15 am
MKE
- BCN
2 stops19h 05m
United Airlines
Deal found 7/24![United Airlines logo]()
$412
This Virgin Atlantic deal was found by Cheapflights users on 7/20. 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.
Wed 9/232:55 pm
MKE
- BCN
1 stop14h 55m
Virgin Atlantic
Deal found 7/20![Virgin Atlantic logo]()
$462
This Delta deal was found by Cheapflights users on 7/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/188:00 am
MKE
- BCN
1 stop17h 45m
Delta
Deal found 7/24![Delta logo]()
$463
This Air Canada deal was found by Cheapflights users on 7/20. 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 9/238:30 am
MKE
- BCN
3 stops17h 50m
Air Canada
Deal found 7/20![Air Canada logo]()
$471
This Air Canada deal was found by Cheapflights users on 7/24. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/218:30 am
MKE
- BCN
3 stops17h 50m
Air Canada
Deal found 7/24![Air Canada logo]()
$913
This Kiwi.com deal was found by Cheapflights users on 7/20. 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.
Mon 10/265:17 pm
MKE
- BCN
3 stops43h 13m
Multiple Airlines
Deal found 7/20![Multiple Airlines logo]()
$1,631
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/295:17 pm
MKE
- BCN
3 stops44h 43m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$1,715
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 25, 2026.
Round-trip from | $784 (United Airlines) |
|---|---|
One-way from | $374 (United Airlines) |
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 25, 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
$803
MilwaukeeBarcelona
MKE - BCN
MKEBCN
Milwaukee-Mitchell
Mon 9/28
6:32 pm-10:25 pm
2 stops20h 53m
Barcelona-El Prat
Tue 10/6
8:00 am-10:59 pm
2 stops21h 59m
$806
MilwaukeeBarcelona
MKE - BCN
MKEBCN
Milwaukee-Mitchell
Tue 10/20
11:35 am-9:00 am
1 stop14h 25m
Barcelona-El Prat
Fri 11/13
11:00 am-6:06 pm
1 stop14h 06m
$808
MilwaukeeBarcelona
MKE - BCN
MKEBCN
Milwaukee-Mitchell
Sun 10/18
3:52 pm-1:15 pm
1 stop14h 23m
Barcelona-El Prat
Tue 11/10
11:00 am-10:47 pm
1 stop18h 47m
$808
MilwaukeeBarcelona
MKE - BCN
MKEBCN
Milwaukee-Mitchell
Sun 9/27
7:18 am-8:00 am
2 stops17h 42m
Barcelona-El Prat
Tue 10/6
3:15 pm-7:07 am
1 stop22h 52m
$811
MilwaukeeBarcelona
MKE - BCN
MKEBCN
Milwaukee-Mitchell
Fri 10/23
8:30 am-8:00 am
2 stops16h 30m
Barcelona-El Prat
Wed 10/28
3:10 pm-10:15 pm
1 stop13h 05m
$831
MilwaukeeBarcelona
MKE - BCN
MKEBCN
Milwaukee-Mitchell
Thu 10/1
2:20 pm-1:15 pm
1 stop15h 55m
Barcelona-El Prat
Fri 10/9
3:15 pm-10:59 pm
1 stop14h 44m
$858
MilwaukeeBarcelona
MKE - BCN
MKEBCN
Milwaukee-Mitchell
Thu 10/8
2:20 pm-2:25 pm
2 stops17h 05m
Barcelona-El Prat
Sun 10/18
10:25 am-7:07 am
2 stops27h 42m
$918
Cheapest one-way
MilwaukeeBarcelona
MKE - BCN
MKEBCN
Milwaukee-Mitchell
Thu 10/22
6:15 am-8:20 am
2 stops19h 05m
$412
MilwaukeeBarcelona
MKE - BCN
MKEBCN
Milwaukee-Mitchell
Fri 10/23
6:15 am-8:20 am
2 stops19h 05m
$412
Showing 1-10 of 19 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
How much does it cost to fly round-trip from Milwaukee to Barcelona?
Airfare is below average for this route at the moment.
Milwaukee to Barcelona flights typically cost between $1,050 and $1,262 in October.The cheapest round-trip price found within the last 5 days was $784 on United Airlines (Oct 24-Nov 11).
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 25, 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.
Overall
7.8
Comfort
7.8
Entertainment
7.8
Food
7.2
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.8
Comfort
7.8
Entertainment
7.8
Food
7.2
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.8
Comfort
7.8
Entertainment
7.8
Food
7.2
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.8
Comfort
7.8
Entertainment
7.8
Food
7.2
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.8
Comfort
7.8
Entertainment
7.8
Food
7.2
Boarding
8.1
Crew
8.5
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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Complete your trip
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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 25, 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 25, 2026.
Popular flight searches
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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 July 25, 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$644 | Average$845 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$689 | Average$989 | FlexibilityNo cancel fee | On-timeN/A |