$349+ 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 10/7. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — BCN
Jun 28 — Jul 51
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
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
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 May 29, 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 May 29, 2026.
This American Airlines deal was found by Cheapflights users on 5/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/281:18 pm
MKE
- BCN
1 stop14h 17m
American Airlines
Tue 10/612:50 pm
BCN
- MKE
1 stop17h 57m
American Airlines
Deal found 5/28![American Airlines logo]()
$773
This Expedia deal was found by Cheapflights users on 5/24. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/78:16 pm
MKE
- BCN
2 stops19h 24m
Iberia
Tue 10/209:15 am
BCN
- MKE
2 stops15h 25m
Iberia
Deal found 5/24![Iberia logo]()
$780
This United Airlines deal was found by Cheapflights users on 5/27. 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.
Mon 9/286:32 pm
MKE
- BCN
1 stop11h 43m
United Airlines
Tue 10/612:15 pm
BCN
- MKE
2 stops32h 28m
United Airlines
Deal found 5/27![United Airlines logo]()
$783
This British Airways deal was found by Cheapflights users on 5/27. 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 British Airways 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
British Airways
Tue 10/610:15 am
BCN
- MKE
2 stops16h 25m
British Airways
Deal found 5/27![British Airways logo]()
$787
This FlightHub deal was found by Cheapflights users on 5/24. 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.
Wed 10/74:49 pm
MKE
- BCN
2 stops14h 26m
British Airways
Tue 10/2012:20 pm
BCN
- MKE
1 stop14h 20m
British Airways
Deal found 5/24![British Airways logo]()
$798
This United Airlines deal was found by Cheapflights users on 5/24. 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 11/97:00 pm
MKE
- BCN
1 stop11h 10m
United Airlines
Thu 11/123:05 pm
BCN
- MKE
1 stop12h 49m
United Airlines
Deal found 5/24![United Airlines logo]()
$803
This American Airlines deal was found by Cheapflights users on 5/29. 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 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 12/1111:50 am
BCN
- MKE
2 stops18h 40m
American Airlines
Deal found 5/29![American Airlines logo]()
$824
This Travelocity deal was found by Cheapflights users on 5/24. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/88:16 pm
MKE
- BCN
2 stops19h 34m
Iberia
Tue 10/209:15 am
BCN
- MKE
2 stops15h 25m
Iberia
Deal found 5/24![Iberia logo]()
$830
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 May 29, 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 May 29, 2026.
This British Airways deal was found by Cheapflights users on 5/27. 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 British Airways 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
British Airways
Tue 10/610:15 am
BCN
- MKE
2 stops16h 25m
British Airways
Deal found 5/27![British Airways logo]()
$787
This United Airlines deal was found by Cheapflights users on 5/24. 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 11/95:21 pm
MKE
- BCN
1 stop12h 49m
United Airlines
Thu 11/126:50 am
BCN
- MKE
2 stops18h 49m
United Airlines
Deal found 5/24![United Airlines logo]()
$807
This Mytrip deal was found by Cheapflights users on 5/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/15:00 am
MKE
- BCN
2 stops20h 00m
Air Canada
Tue 9/1512:15 pm
BCN
- MKE
2 stops39h 55m
Air Canada
Deal found 5/29![Air Canada logo]()
$872
This Air Canada deal was found by Cheapflights users on 5/29. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/110:19 am
MKE
- BCN
2 stops14h 41m
Multiple Airlines
Tue 9/156:40 am
BCN
- MKE
3 stops19h 15m
Multiple Airlines
Deal found 5/29![Multiple Airlines logo]()
$1,031
This British Airways deal was found by Cheapflights users on 5/29. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/88:16 pm
MKE
- BCN
2 stops15h 04m
British Airways
Sun 10/187:50 am
BCN
- MKE
2 stops18h 50m
British Airways
Deal found 5/29![British Airways logo]()
$887
This United Airlines deal was found by Cheapflights users on 5/24. 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 10/76:32 pm
MKE
- BCN
1 stop11h 43m
United Airlines
Tue 10/203:15 pm
BCN
- MKE
1 stop14h 44m
United Airlines
Deal found 5/24![United Airlines logo]()
$889
This United Airlines deal was found by Cheapflights users on 5/29. 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.
Tue 9/16:15 am
MKE
- BCN
2 stops18h 45m
United Airlines
Tue 9/1512:00 pm
BCN
- MKE
1 stop18h 37m
United Airlines
Deal found 5/29![United Airlines logo]()
$893
This United Airlines deal was found by Cheapflights users on 5/27. 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.
Thu 10/86:15 am
MKE
- BCN
1 stop24h 00m
United Airlines
Sun 10/187:55 am
BCN
- MKE
2 stops30h 12m
United Airlines
Deal found 5/27![United Airlines logo]()
$991
Last-minute flights from Milwaukee to BarcelonaDiscover last-minute flight deals from Milwaukee to Barcelona. Data last updated May 29, 2026 and is based on user searches.
Discover last-minute flight deals from Milwaukee to Barcelona. Data last updated May 29, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 5/27. 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 6/56:09 am
MKE
- BCN
2 stops18h 51m
United Airlines
Wed 6/1012:15 pm
BCN
- MKE
2 stops31h 40m
United Airlines
Deal found 5/27![United Airlines logo]()
$1,380
This American Airlines deal was found by Cheapflights users on 5/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/512:34 pm
MKE
- BCN
1 stop11h 11m
American Airlines
Wed 6/1010:30 am
BCN
- MKE
1 stop16h 28m
American Airlines
Deal found 5/27![American Airlines logo]()
$1,397
This KAYAK deal was found by Cheapflights users on 5/27. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/219:36 am
MKE
- BCN
1 stop17h 09m
JetBlue
Tue 6/3012:50 pm
BCN
- MKE
1 stop26h 56m
JetBlue
Deal found 5/27![JetBlue logo]()
$1,299
This KAYAK deal was found by Cheapflights users on 5/26. 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.
Sun 6/217:00 am
MKE
- BCN
2 stops28h 10m
Scandinavian Airlines
Mon 7/61:00 pm
BCN
- MKE
2 stops37h 24m
Scandinavian Airlines
Deal found 5/26![Scandinavian Airlines logo]()
$1,396
This Ovago deal was found by Cheapflights users on 5/26. 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.
Tue 6/239:36 am
MKE
- BCN
1 stop17h 09m
JetBlue
Tue 7/712:50 pm
BCN
- MKE
1 stop26h 55m
JetBlue
Deal found 5/26![JetBlue logo]()
$1,280
This Air Canada deal was found by Cheapflights users on 5/26. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/2310:38 am
MKE
- BCN
2 stops15h 42m
Air Canada
Fri 7/31:15 pm
BCN
- MKE
2 stops30h 33m
Air Canada
Deal found 5/26![Air Canada logo]()
$1,376
This Ovago deal was found by Cheapflights users on 5/26. 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.
Wed 6/249:36 am
MKE
- BCN
1 stop17h 09m
JetBlue
Tue 7/712:50 pm
BCN
- MKE
1 stop26h 55m
JetBlue
Deal found 5/26![JetBlue logo]()
$1,350
This United Airlines deal was found by Cheapflights users on 5/26. 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.
Wed 6/247:25 am
MKE
- BCN
2 stops17h 55m
United Airlines
Thu 7/93:15 pm
BCN
- MKE
1 stop12h 41m
United Airlines
Deal found 5/26![United Airlines logo]()
$1,388
This oojo deal was found by Cheapflights users on 5/26. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/241:30 pm
MKE
- BCN
2 stops14h 35m
Lufthansa
Mon 7/63:40 pm
BCN
- MKE
2 stops32h 02m
Lufthansa
Deal found 5/26![Lufthansa logo]()
$1,411
This Air Canada deal was found by Cheapflights users on 5/26. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/275:29 pm
MKE
- BCN
2 stops31h 31m
Air Canada
Wed 7/81:15 pm
BCN
- MKE
2 stops16h 14m
Air Canada
Deal found 5/26![Air Canada logo]()
$1,400
This United Airlines deal was found by Cheapflights users on 5/24. 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 6/2910:52 am
MKE
- BCN
1 stop15h 08m
United Airlines
Tue 7/1412:00 pm
BCN
- MKE
1 stop13h 26m
United Airlines
Deal found 5/24![United Airlines logo]()
$1,383
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 May 29, 2026.
Search for one-way flight options from Milwaukee to Barcelona. Find affordable one-way fares based on user searches. Data last updated May 29, 2026.
This oojo deal was found by Cheapflights users on 5/24. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/74:49 pm
MKE
- BCN
2 stops14h 26m
British Airways
Deal found 5/24![British Airways logo]()
$349
This United Airlines deal was found by Cheapflights users on 5/29. 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.
Thu 9/176:00 am
MKE
- BCN
2 stops19h 00m
United Airlines
Deal found 5/29![United Airlines logo]()
$431
This Air Canada deal was found by Cheapflights users on 5/29. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/185:00 am
MKE
- BCN
2 stops45h 20m
Air Canada
Deal found 5/29![Air Canada logo]()
$436
This Delta deal was found by Cheapflights users on 5/29. 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.
Fri 9/186:35 pm
MKE
- BCN
1 stop31h 00m
Delta
Deal found 5/29![Delta logo]()
$454
This Booking.com deal was found by Cheapflights users on 5/26. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/1510:44 am
MKE
- BCN
2 stops38h 16m
Air Canada
Deal found 5/26![Air Canada logo]()
$467
This Expedia deal was found by Cheapflights users on 5/26. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/145:17 pm
MKE
- BCN
2 stops55h 43m
Air Canada
Deal found 5/26![Air Canada logo]()
$478
This Cheapflightsfares deal was found by Cheapflights users on 5/26. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/159:36 am
MKE
- BCN
1 stop17h 09m
JetBlue
Deal found 5/26![JetBlue logo]()
$508
This TravelUp deal was found by Cheapflights users on 5/26. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/141:19 pm
MKE
- BCN
1 stop16h 56m
Lufthansa
Deal found 5/26![Lufthansa logo]()
$511
This Kiwi.com deal was found by Cheapflights users on 5/27. 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.
Sun 6/288:43 am
MKE
- BCN
2 stops32h 22m
Multiple Airlines
Deal found 5/27![Multiple Airlines logo]()
$556
This Kiwi.com deal was found by Cheapflights users on 5/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/711:35 am
MKE
- BCN
3 stops21h 20m
Multiple Airlines
Deal found 5/24![Multiple Airlines logo]()
$590
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 May 29, 2026.
Round-trip from | $773 (American Airlines) |
|---|---|
One-way from | $349 (oojo) |
Popular in | May |
Cheapest in | November |
Average price | $1,483 |
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 May 29, 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 - BCN
MKEBCN
Milwaukee-Mitchell
Mon 9/28
8:14 pm-5:35 pm
2 stops14h 21m
Barcelona-El Prat
Tue 10/6
10:15 am-7:40 pm
2 stops16h 25m
$787
MilwaukeeBarcelona
MKE - BCN
MKEBCN
Milwaukee-Mitchell
Mon 11/9
5:21 pm-1:10 pm
1 stop12h 49m
Barcelona-El Prat
Thu 11/12
6:50 am-6:39 pm
2 stops18h 49m
$807
MilwaukeeBarcelona
MKE - BCN
MKEBCN
Milwaukee-Mitchell
Tue 9/1
5:00 am-8:00 am
2 stops20h 00m
Barcelona-El Prat
Tue 9/15
12:15 pm-9:10 pm
2 stops39h 55m
$872
MilwaukeeBarcelona
MKE - BCN
MKEBCN
Milwaukee-Mitchell
Thu 10/8
8:16 pm-6:20 pm
2 stops15h 04m
Barcelona-El Prat
Sun 10/18
7:50 am-7:40 pm
2 stops18h 50m
$887
Quickest round-trip
MilwaukeeBarcelona
MKE - BCN
MKEBCN
Milwaukee-Mitchell
Wed 10/7
6:32 pm-1:15 pm
1 stop11h 43m
Barcelona-El Prat
Tue 10/20
3:15 pm-10:59 pm
1 stop14h 44m
$889
MilwaukeeBarcelona
MKE - BCN
MKEBCN
Milwaukee-Mitchell
Tue 9/1
6:15 am-8:00 am
2 stops18h 45m
Barcelona-El Prat
Tue 9/15
12:00 pm-11:37 pm
1 stop18h 37m
$893
MilwaukeeBarcelona
MKE - BCN
MKEBCN
Milwaukee-Mitchell
Thu 10/8
6:15 am-1:15 pm
1 stop24h 00m
Barcelona-El Prat
Sun 10/18
7:55 am-7:07 am
2 stops30h 12m
$991
MilwaukeeBarcelona
MKE - BCN
MKEBCN
Milwaukee-Mitchell
Tue 9/1
10:19 am-8:00 am
2 stops14h 41m
Barcelona-El Prat
Tue 9/15
6:40 am-6:55 pm
3 stops19h 15m
$1,031
Cheapest one-way
MilwaukeeBarcelona
MKE - BCN
MKEBCN
Milwaukee-Mitchell
Wed 10/7
4:49 pm-2:15 pm
2 stops14h 26m
$349
MilwaukeeBarcelona
MKE - BCN
MKEBCN
Milwaukee-Mitchell
Thu 9/17
6:00 am-8:00 am
2 stops19h 00m
$431
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?
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 May 29, 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
7.9
Crew
8.5
Comfort
7.8
Entertainment
7.8
Boarding
8.1
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.9
Crew
8.5
Comfort
7.8
Entertainment
7.8
Boarding
8.1
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.9
Crew
8.5
Comfort
7.8
Entertainment
7.8
Boarding
8.1
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.9
Crew
8.5
Comfort
7.8
Entertainment
7.8
Boarding
8.1
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.9
Crew
8.5
Comfort
7.8
Entertainment
7.8
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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Other flights from Milwaukee
Popular flights
Alternative routes for Milwaukee to Barcelona
See prices for flight routes from nearby airports that may be better suited for you.
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 May 29, 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 May 29, 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 May 29, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$457 | Average$698 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$499 | Average$808 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$609 | Average$775 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$689 | Average$989 | FlexibilityNo cancel fee | On-timeN/A |