$458 Cheap Flights from Milwaukee (MKE) to Bilbao (BIO)

View $458 flight on Mon, Nov 24, 2025Opens in a new window

Popular airlines from General Mitchell Intl. Airport (MKE) to Bilbao Airport (BIO)

Cheap Flights from Milwaukee to Bilbao (MKE-BIO)

Prices were available within the past 7 days and start at $458 for one-way flights and $582 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Mon, Nov 24 - Fri, Dec 12
MKE
Milwaukee
BIO
Bilbao
$582 Roundtrip, found 23 hours ago
$582
Roundtrip
found 23 hours ago
Select American Airlines flight, departing Mon, Nov 24 from Milwaukee to Bilbao, returning Fri, Dec 12, priced at $582 found 23 hours ago
Delta
Mon, Oct 20 - Thu, Nov 6
MKE
Milwaukee
BIO
Bilbao
$589 Roundtrip, found 20 hours ago
$589
Roundtrip
found 20 hours ago
Select Delta flight, departing Mon, Oct 20 from Milwaukee to Bilbao, returning Thu, Nov 6, priced at $589 found 20 hours ago
American Airlines
Mon, Nov 24 - Mon, Dec 8
MKE
Milwaukee
BIO
Bilbao
$593 Roundtrip, found 23 hours ago
$593
Roundtrip
found 23 hours ago
Select American Airlines flight, departing Mon, Nov 24 from Milwaukee to Bilbao, returning Mon, Dec 8, priced at $593 found 23 hours ago
Delta
Mon, Oct 20 - Fri, Nov 7
MKE
Milwaukee
BIO
Bilbao
$604 Roundtrip, found 20 hours ago
$604
Roundtrip
found 20 hours ago
Select Delta flight, departing Mon, Oct 20 from Milwaukee to Bilbao, returning Fri, Nov 7, priced at $604 found 20 hours ago
Delta
Mon, Dec 1 - Thu, Dec 18
MKE
Milwaukee
BIO
Bilbao
$604 Roundtrip, found 23 hours ago
$604
Roundtrip
found 23 hours ago
Select Delta flight, departing Mon, Dec 1 from Milwaukee to Bilbao, returning Thu, Dec 18, priced at $604 found 23 hours ago
United
Mon, Oct 6 - Tue, Oct 21
MKE
Milwaukee
BIO
Bilbao
$605 Roundtrip, found 20 hours ago
$605
Roundtrip
found 20 hours ago
Select United flight, departing Mon, Oct 6 from Milwaukee to Bilbao, returning Tue, Oct 21, priced at $605 found 20 hours ago
United
Wed, Dec 24 - Fri, Jan 9
MKE
Milwaukee
BIO
Bilbao
$606 Roundtrip, found 1 day ago
$606
Roundtrip
found 1 day ago
Select United flight, departing Wed, Dec 24 from Milwaukee to Bilbao, returning Fri, Jan 9, priced at $606 found 1 day ago
United
Sun, Oct 19 - Thu, Nov 6
MKE
Milwaukee
BIO
Bilbao
$609 Roundtrip, found 20 hours ago
$609
Roundtrip
found 20 hours ago
Select United flight, departing Sun, Oct 19 from Milwaukee to Bilbao, returning Thu, Nov 6, priced at $609 found 20 hours ago
KLM
Tue, Oct 28 - Wed, Nov 12
MKE
Milwaukee
BIO
Bilbao
$612 Roundtrip, found 20 hours ago
$612
Roundtrip
found 20 hours ago
Select KLM flight, departing Tue, Oct 28 from Milwaukee to Bilbao, returning Wed, Nov 12, priced at $612 found 20 hours ago
Air France
Mon, Sep 22 - Tue, Oct 7
MKE
Milwaukee
BIO
Bilbao
$615 Roundtrip, found 20 hours ago
$615
Roundtrip
found 20 hours ago
Select Air France flight, departing Mon, Sep 22 from Milwaukee to Bilbao, returning Tue, Oct 7, priced at $615 found 20 hours ago

Alternative airports near Bilbao

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Bilbao Airport BIO. Cheapest and Closest option available. Average driving time to city center is 13 minutes. Flights from $589
BIO
Bilbao Airport
CheapestClosest
Average driving time to city center13 min
Flights from $589
Flights from Milwaukee (MKE) to Bilbao (BIO)
Origin airport
General Mitchell Intl.
Destination airport
Bilbao
Airlines serving
Air France, American Airlines, British Airways, Delta, KLM, Lufthansa, United
Roundtrip price
$582
Distance
4082 mi

Milwaukee to Bilbao Flights

The cheapest times to fly from Milwaukee to Bilbao

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Milwaukee to Bilbao are during the month of November. You can find some of the cheapest flights from Milwaukee to Bilbao with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Milwaukee to Bilbao

Sunday is one of the best days to book for cheap flights from Milwaukee to Bilbao: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Milwaukee to Bilbao

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Milwaukee to Bilbao in 2025. You can also book with separate airlines for your outbound and return journeys, from $458 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Milwaukee to Bilbao flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Milwaukee to Bilbao airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from General Mitchell Intl. Airport (MKE) to Bilbao Airport (BIO) cost?
Grab a cheap one-way flight from $458 or cheap return flight from $582 from General Mitchell Intl. Airport (MKE) to Bilbao Airport (BIO) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from General Mitchell Intl. Airport (MKE) to Bilbao Airport (BIO)?
November is the cheapest month to fly from MKE to BIO. Timing your trip outside of the busy season is often the key to finding a great deal.
What is the cheapest airline that flies from General Mitchell Intl. Airport (MKE) to Bilbao Airport (BIO)?
Expedia's filter tool lets you easily compare airlines, flight times and baggage options all in one place. Select your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest MKE to BIO flight.
How many flights per day from General Mitchell Intl. Airport (MKE) to Bilbao Airport (BIO)?
There aren't any daily direct flights available from General Mitchell Intl. Airport (MKE) to Bilbao Airport (BIO). But you can opt for flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be on your way in no time.
What day of the week has the most flights from MKE to BIO?
You'll usually find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from General Mitchell Intl. Airport (MKE) to Bilbao Airport (BIO)?
Choose a flight from General Mitchell Intl. Airport (MKE) to Bilbao Airport (BIO) that takes off before 3 PM to reduce the likelihood of delays and cancellations. Departures later than this have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from General Mitchell Intl. Airport (MKE) to Bilbao Airport (BIO) last-minute?
Last-minute fares from MKE to BIO are generally more expensive. For the cheapest rates, start searching for flights ahead of time. That said, if you're flexible with your travel dates, it's possible to find a cheap ticket right before your trip.
Is it cheaper to book a MKE to BIO flight and hotel package?
Compared with arranging hotels and flights separately, booking a MKE to BIO flight and hotel package with Expedia could result in significant savings. What's more, having everything in one easy place will take the hassle out of planning your trip. Just secure your flights and choose from our extensive range of hotels, then customize your trip with extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from General Mitchell Intl. Airport (MKE) to Bilbao Airport (BIO)?
You can usually reschedule or cancel your MKE to BIO flight. However, if it's been more than 24 hours since booking, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find further details on our Customer Service portal.

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*Available to One Key members.