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$476+ Cheap flights from Oshkosh, WI to Barcelona

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/30. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — BCN
Jan 22 — Jan 291
Thu 1/22
Thu 1/29
1 adult, Economy
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Cheap flight deals from Oshkosh to Barcelona

Cheapest flights from Oshkosh to Barcelona
Explore the most affordable flight options available from Oshkosh to Barcelona. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 23, 2025.

This American Airlines deal was found by Cheapflights users on 12/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/299:51 amATW - BCN
2 stops18h 29mAmerican Airlines
Sat 1/312:30 pmBCN - ATW
2 stops17h 27mAmerican Airlines
Deal found 12/21$2,645
This KLM deal was found by Cheapflights users on 12/21. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/295:25 amATW - BCN
1 stop20h 15mMultiple Airlines
Sat 1/312:15 pmBCN - ATW
2 stops15h 48mMultiple Airlines
Deal found 12/21$2,782
This KLM deal was found by Cheapflights users on 12/21. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/295:25 amATW - BCN
1 stop20h 15mKLM
Sat 1/310:55 amBCN - ATW
1 stop17h 46mKLM
Deal found 12/21$3,275

Find flight deals from Oshkosh to Barcelona

Keep the following information in mind while searching for Oshkosh to Barcelona flight deals. Data was last updated December 23, 2025.

Round-trip from

$476
(Cheapflightsfares)

Popular in

July

Cheapest in

December

Average price

$548
From Oshkosh to Barcelona
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($184 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($46 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Oshkosh 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 December 23, 2025.
Use the filters below to find and compare flights from Oshkosh to Barcelona that are best for you.

Fly from

Oshkosh

Fly to

Barcelona

Route

Depart

Return

Price

AppletonBarcelona

ATW - BCN

ATWBCN

Appleton Intl

Fri 1/30

11:25 am-1:40 pm

2 stops19h 15m

Barcelona-El Prat

Tue 2/3

10:40 am-9:57 pm

1 stop18h 17m

$481

AppletonBarcelona

ATW - BCN

ATWBCN

Appleton Intl

Fri 1/30

5:23 pm-5:35 pm

2 stops17h 12m

Barcelona-El Prat

Tue 2/3

1:35 pm-7:15 pm

2 stops36h 40m

$495

AppletonBarcelona

ATW - BCN

ATWBCN

Appleton Intl

Sun 5/17

5:35 pm-1:15 pm

1 stop12h 40m

Barcelona-El Prat

Wed 6/3

3:15 pm-8:58 pm

1 stop12h 43m

$745

AppletonBarcelona

ATW - BCN

ATWBCN

Appleton Intl

Mon 5/18

11:27 am-12:10 pm

2 stops17h 43m

Barcelona-El Prat

Fri 5/29

10:45 am-5:39 pm

1 stop13h 54m

$752

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/21

Best time to book a flight from Oshkosh to Barcelona

Have a flexible travel schedule? Discover the best time to fly to Barcelona from Oshkosh with our price prediction graph.
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 Oshkosh to Barcelona

What is the cheapest month to book a flight from Oshkosh to Barcelona?

Currently, December is the cheapest month in which you can book a flight from Oshkosh to Barcelona (average of $497). Flying from Oshkosh to Barcelona in June is currently the most expensive (average of $1,361). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from OS9 to BCN?

Find hourly flight availability from Oshkosh to Barcelona. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 23, 2025.

When flying from Oshkosh to Barcelona, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 53% versus a flight in the afternoon.

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 December 23, 2025.
See what other customers who have flown with United Airlines and American Airlines from Oshkosh to Barcelona have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,105 reviews

Comfort

7.3

Overall

7.4

Entertainment

7.1

Boarding

7.7

Crew

8.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
United Airlines
7.4
Good
9,105 reviews
United Airlines
7.4
Good
9,105 reviews

Comfort

7.3

Overall

7.4

Entertainment

7.1

Boarding

7.7

Crew

8.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
American Airlines
7.2
Good
11,054 reviews
United Airlines
7.4
Good
9,105 reviews

Comfort

7.3

Overall

7.4

Entertainment

7.1

Boarding

7.7

Crew

8.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.

Related info for your journey

Find useful and relevant information for your journey from Oshkosh to Barcelona. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Oshkosh to Barcelona?

    There are many flights that can get you from Oshkosh to Barcelona in 17h 12m. Fly via American Airlines or United Airlines to get the fastest option. The distance between Oshkosh and Barcelona is about 4346 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • Can I find deals for flights from Oshkosh to Barcelona that include hotel bookings?

    Yes. In addition to deals on Oshkosh to Barcelona flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Oshkosh to Barcelona?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Oshkosh to Barcelona.

  • Can I find deals for business class flights from Oshkosh to Barcelona?

    Yes. Cheapflights offers flight deals from Oshkosh to Barcelona by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Oshkosh to Barcelona?

    Currently, December is the cheapest month in which you can book a flight from Oshkosh to Barcelona (average of $497). Flying from Oshkosh to Barcelona in June is currently the most expensive (average of $1,361). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 4 airlines flying from Oshkosh to Barcelona

Discover the top 4 airlines that operate flights from Oshkosh 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 December 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$508Average$842FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$577Average$910FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$619Average$881FlexibilityNo cancel feeOn-time70%
DeltaCheapest$632Average$879FlexibilityNo cancel feeOn-timeN/A

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