MKE - BCN

$360 Find Cheap Flights from Milwaukee to Barcelona

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Milwaukee to Barcelona-El Prat departing on 5/2. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Barcelona-El Prat Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Milwaukee to Barcelona, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Milwaukee to Barcelona, as well as popular online travel agencies
Travelers love KAYAK
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Everything you should know

Cheapest round-trip
$480
Overall average: $1,073
American Airlines
Wed 1/14Sun 1/18
MKE - BCN • 2 stops
Cheapest one-way
$360
British Airways
Sat 5/2
MKE - BCN • 1 stop
Top airlines
KLM
Cheapest • from $484 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
November
Cheapest • 48% price drop
October
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Barcelona-El Prat!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Milwaukee to Barcelona-El Prat (MKE-BCN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Milwaukee to Barcelona-El Prat that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Milwaukee to Barcelona-El Prat

Wed, Jan 14 - Sun, Jan 18
American Airlines Logo
4:05 pm - 2:40 pm
MKE
-
BCN
15h 35m2 stops
American Airlines Logo
10:40 am - 9:59 pm
BCN
-
MKE
18h 19m1 stop
$480American Airlines
Sat, Jan 24 - Sat, Jan 31
British Airways Logo
6:58 pm - 4:05 pm
MKE
-
BCN
14h 07m2 stops
British Airways Logo
8:40 pm - 10:02 pm
BCN
-
MKE
32h 22m2 stops
$481British Airways
Fri, Feb 6 - Mon, Feb 16
British Airways Logo
1:04 pm - 10:35 pm
MKE
-
BCN
26h 31m2 stops
British Airways Logo
6:40 am - 5:47 pm
BCN
-
MKE
18h 07m2 stops
$482British Airways
Sat, Jan 24 - Sat, Jan 31
KLM Logo
11:07 am - 8:40 am
MKE
-
BCN
14h 33m1 stop
KLM Logo
10:15 am - 8:58 pm
BCN
-
MKE
17h 43m1 stop
$484KLM
Wed, Jan 14 - Sun, Jan 18
American Airlines Logo
4:05 pm - 2:40 pm
MKE
-
BCN
15h 35m2 stops
American Airlines Logo
12:30 pm - 11:35 pm
BCN
-
MKE
18h 05m2 stops
$485American Airlines
Fri, Feb 6 - Mon, Feb 16
KLM Logo
7:05 am - 8:00 am
MKE
-
BCN
17h 55m1 stop
KLM Logo
6:00 am - 5:34 pm
BCN
-
MKE
18h 34m2 stops
$490KLM
Wed, Jan 14 - Sun, Jan 18
United Airlines Logo
5:00 am - 9:35 am
MKE
-
BCN
21h 35m2 stops
United Airlines Logo
6:50 am - 1:53 pm
BCN
-
MKE
38h 03m2 stops
$491United Airlines
Wed, Mar 11 - Mon, Mar 16
United Airlines Logo
6:00 am - 8:20 am
MKE
-
BCN
20h 20m2 stops
United Airlines Logo
1:45 pm - 10:30 am
BCN
-
MKE
26h 45m2 stops
$492United Airlines
Wed, Jan 14 - Sun, Jan 18
United Airlines Logo
11:30 am - 5:35 pm
MKE
-
BCN
23h 05m2 stops
United Airlines Logo
6:50 am - 8:48 pm
BCN
-
MKE
20h 58m2 stops
$495United Airlines
Mon, Feb 16 - Sun, Mar 8
American Airlines Logo
11:52 am - 8:50 am
MKE
-
BCN
13h 58m1 stop
American Airlines Logo
10:10 am - 11:05 pm
BCN
-
MKE
18h 55m2 stops
$499American Airlines
Booking Insights

KAYAK's insights & trends for Milwaukee to Barcelona-El Prat flights

Get data-powered insights and trends into flights from Milwaukee to Barcelona-El Prat to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Milwaukee to Barcelona-El Prat Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Milwaukee to Barcelona-El Prat Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Milwaukee to Barcelona-El Prat Airport is November, where tickets cost $521 (return) on average. On the other hand, the most expensive months are June and December, where the average cost of round-trip tickets is $1,392 and $1,292 respectively.

Good to know

Low seasonFebruary
Cheapest flight$360
Best time to beat the crowds with an average 21% drop in price.
Most popular time to fly and prices are also 30% lower on average.
Flight from Milwaukee to Barcelona

When to book flights from Milwaukee to Barcelona-El Prat

Are your dates flexible? Find out the best times to travel from Milwaukee to Barcelona-El Prat based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Milwaukee to Barcelona flights

  • What is the cheapest flight from Milwaukee to Barcelona-El Prat Airport?

    In the last 3 days, the lowest price for a flight from Milwaukee to Barcelona-El Prat Airport was $360 for a one-way ticket and $480 for a round-trip.

  • Do I need a passport to fly between Milwaukee and Barcelona?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Milwaukee and on arrival in Barcelona.

  • Which aircraft models fly most regularly from Milwaukee to Barcelona?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Milwaukee to Barcelona?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between Milwaukee and Barcelona, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Milwaukee to Barcelona, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Milwaukee to Barcelona are Delta and United Airlines. With an average price for the route of $857 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $790 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Milwaukee to Barcelona?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Milwaukee to Barcelona.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Milwaukee to Barcelona?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Barcelona from Milwaukee is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Milwaukee to Barcelona?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Barcelona with an airline and back to Milwaukee with another airline. Booking your flights between Milwaukee and BCN can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Milwaukee to Barcelona?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Barcelona from Milwaukee up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 4 airlines serving from Milwaukee to Barcelona-El Prat

 
See real verified KAYAK customer reviews for airlines flying from Milwaukee to Barcelona. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Milwaukee to Barcelona-El Prat? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8009 reviews
7.9Comfort
8.5Crew
7.3Food
8.1Boarding
7.9Entertainment
Airline reviews

Lady Pilot was perfect in every way wheels up to wheels down communication, professionalism, excellent on time departure and on time arrival, excellent communication! Fantastic job with Superb attitude!!

10.0 ExcellentVenkata Krishna, Dec 2025
ATL - SDF
Read more Delta reviews

Lady Pilot was perfect in every way wheels up to wheels down communication, professionalism, excellent on time departure and on time arrival, excellent communication! Fantastic job with Superb attitude!!

The food is terrible. The staff is wonderful. Comfort is good.

Left on time, a bit delayed due to headwinds most of the trip.

I fly Delta all the time, have Platinum Medallion status. But this route seems to have major problems with delays and seems to never leave on time! Have only taken it twice in the last two weeks, and each time it had delays of more than 1 hour... very disappointed!!!!

Getting to the flight was arduous and lengthy. The flight itself was good but the food option wasn’t a good selection. I need to do a Kosher option on my return. Flight crew were nice

Good seats in Main cabin, excellent service and excellent landing

My flight was cancelled with no explanation after I had already cleared security. I was given 4 options to rebook, only one being non-stop like I had paid for. I grabbed it. It was 4 plus hours later and then took off even later. Biggest complaint is that I booked early and had an aisle seat. They gave me a "window" seat in front of the exit row, so the seat did not decline. I weigh all of 103 #s and it was tight for me! For what I paid, I feel I was kind of ripped off. I think they should have given me the empty comfort seat for the inconvenience. There was no apology nor any explanation as to why the flight was cancelled. My guess is it benefitted Delta in some way.

Very smooth, on-time, and pleasantly uneventful flight. The team at the gate and on board were professional and genuinely courteous. The pilot kept us well updated throughout, and both takeoff and landing were steady and enjoyable without any drama. Just a good, solid flight. Thank you! 💗

Staff was exceptional! Everyone was kind, professional and friendly making the trip very pleasant. Thank you!

No lunch on a x-country flight scheduled for 10:50 am departure, arrived 5+ hrs later. That requires a black box label before you pay for the tickets. Worst, when I checked in online, it's specifically said that lunch was served on his flight for economy Plus passengers.

It was nice to have gotten up upgraded to first class with a meal on a three hour flight

Not great experience - we were super late boarding due to issues with aircraft. Then when we finally all got onboard and seated and they started taxiing out to the runway they just stopped then turned around and went back to the airport. Apparently the crew “ran out of time” to legally fly us. They mentioned that they were about 2 minutes away from taking off. I understand the rules and safety but kinda wonder why they would have bothered boarding us in the first place? Had to go all the way back and de plane and then wait in a HUGE line to get a hotel (this is somewhere around 2:30am) finally got to hotel by Uber (no shuttle after 20min so gave up) and they ended up putting us all back on the same aircraft at 10am next morning so got about 2.5 hours sleep. They did give us. $250 credit, but it was a São Paulo Brazil flight out of Dulles. The flight and everything was fine.

United overall experience is great these days. Airport experience was very organized. Staff on flight were great. App and information as good as it gets.

United have really come back. Airport and boarding process is clear and good, app and information also very good

They charged a fee for 1st bag checked. Others in same party were free.

Flight was delayed 8 times. We were sitting at the airport for 14 hours. We got 2 hours of sleep (if that) on what was not meant to be a red-eye.

The movies offered were great. Staff were very pleasant and very efficient.

After a delay at the gate, C3, at Ohare on Sunday, I left my Blk ski coat on the bench at the gate, lost! Please review my lob claim, thx.

Very bad! They kept delaying my flight and wouldn’t do anything about it

They brought an empty plane to the gate. Then a flight delay was announced for maintenance and waiting on a part. I was then put on a flight to San Francisco instead with a connecting flight to my final destination. Arrived at my final destination 2 hours late.

it was fine, decent flight... dont get food besides cookies or pretzels so not sure why you ask about food. same for entertainment..

I got sick nothing contagious but distressing and the care I received by Kayla? Keighly the flight attendant will be memorable for ever. Thank You

I got sick nothing contagious but distressing enough and the care I received on the flight was astounding.

Waaay too small plane. They also need to up the size of the overhead bins. I would love to keep me 3k with of camera equipment in my hard case baggahe instead of it being thrown into the belly of the plane

Attendants were pleasant and the flight was smooth and relaxed.

A little late at the start but all worked out well.

It was fine. No drinks nor snacks offered though. I thought that was unusual.

I liked the humor of the captain and crew on the flight from Flagstaff to Dallas. They were humorous.

AA delayed the flight for 3 hours and 50 minutes, but delayed the last 2 hours, 30 minutes at a time, so if we knew before, could have stayed at home and worked instead of being at the airport wasting time... The plane's crew was excellent, not their fault.

After arriving in Dallas, the aircraft taxied for an unusually long time and was unable to park at the gate, which caused a significant delay and made me miss my connecting flight. I then had to wait in a very long line to be rebooked, and I was told that no hotel or meal accommodations would be provided. What is even more unacceptable is that my luggage was mishandled and has still not been located. My suitcase contains important medications that I urgently need, and I have been unable to access them due to the airline’s mishandling. This situation has caused me considerable stress and inconvenience, and I need this issue to be resolved immediately.

Check in was was and the agent was very friendly and helpful The lounge was nice...boarding was straight from the lounge Everything worked at our seats, and video entertainment was good ..food was mediocre

The flight was excellent in World Travellor plus. Well worth the extra money. Boarding at Phoenix was the usual poorly organized event. Very stressful.

Although business class, the seating was really cramped. The food was so so.

Smooth trip no turbulence which is always a bonus for me lol! In cattle class so an element of being a bit squished (but not as bad as other shorter haul airlines) smaller plane than the one we flew out on and entertainment system wasn’t as modern but still definitely passed the time. Lovely crew x

I was attacked in the Miami airport and the staff did nothing. On my flight from London to Miami one of the flight attendants screamed at me and demanded I keep my seat in the upright position at all times during the fight so the man behind me was comfortable for the flight. I will never in my life use British airways again

Airlines have to stop assuming passengers bring entertainment. Provide it like you used to in business class and above!! N

I don't know about the others but the flight attendant that took care of us had the absolute wrong approach "how do we dare asking for water or anything else for that matter"

Flying on the Boeing 787 from Seattle to London was everything that I expected. Every thing was great.

Not my definition of first class. No leg room and barely any recline. The food was good. The crew was great. The comfort for the price I paid for London to Cairo was highway robbery. The Wi-Fi didn't work for me either.

Seat pitch is not enough to eat comfortably. When seat in front is reclined, your screen comes closer to your face. Ryanair seats are actually more comfortable.

Everything you need to know for your flight from Milwaukee to Barcelona-El Prat

Information on your arrival and departure airports