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$545+ 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 9/28. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — BCN
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Oshkosh to Barcelona

Keep the following information in mind while searching for Oshkosh to Barcelona flight deals. Data was last updated September 15, 2025.

Round-trip from

$545
(KLM)

Popular in

June

Cheapest in

December

Average price

$866
From Oshkosh to Barcelona
Search Deals
Highest demand for flights based on searches. 33% potential increase in price ($470 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($60 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
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Find 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 September 15, 2025.

This KLM deal was found by Cheapflights users on 9/15. 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.
Sun 9/285:35 amATW - BCN
1 stop20h 45mKLM
Tue 10/711:35 amBCN - ATW
1 stop17h 07mKLM
Deal found 9/15$545
This Virgin Atlantic deal was found by Cheapflights users on 9/15. 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.
Sun 9/285:35 amATW - BCN
1 stop20h 45mVirgin Atlantic
Tue 10/711:35 amBCN - ATW
1 stop17h 07mVirgin Atlantic
Deal found 9/15$553
This Delta deal was found by Cheapflights users on 9/15. 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 9/287:00 amATW - BCN
2 stops17h 15mDelta
Tue 10/711:35 amBCN - ATW
1 stop17h 07mDelta
Deal found 9/15$557
This United Airlines deal was found by Cheapflights users on 9/13. 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 10/162:45 pmATW - BCN
2 stops23h 55mUnited Airlines
Mon 10/276:50 amBCN - ATW
2 stops37h 07mUnited Airlines
Deal found 9/13$720
This United Airlines deal was found by Cheapflights users on 9/15. 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 12/138:15 amATW - BCN
2 stops17h 05mUnited Airlines
Wed 12/311:35 pmBCN - ATW
2 stops36h 44mUnited Airlines
Deal found 9/15$779
This Gurufare deal was found by Cheapflights users on 9/14. 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.
Thu 10/166:45 pmATW - BCN
1 stop11h 30mLufthansa
Mon 10/2711:55 amBCN - ATW
2 stops34h 47mLufthansa
Deal found 9/14$1,017
This Delta deal was found by Cheapflights users on 9/15. 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.
Sat 12/135:23 amATW - BCN
1 stop20h 17mDelta
Wed 12/316:00 amBCN - ATW
2 stops22h 25mDelta
Deal found 9/15$1,144
This KLM deal was found by Cheapflights users on 9/13. 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.
Thu 10/165:41 amATW - BCN
1 stop20h 39mKLM
Mon 10/279:45 amBCN - ATW
1 stop17h 57mKLM
Deal found 9/13$1,408
This KLM deal was found by Cheapflights users on 9/15. 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.
Sat 12/135:23 amATW - BCN
1 stop20h 17mKLM
Wed 12/3110:55 amBCN - ATW
1 stop17h 30mKLM
Deal found 9/15$1,703

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 September 15, 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

Sun 9/28

5:35 am-9:20 am

1 stop20h 45m

Barcelona-El Prat

Tue 10/7

11:35 am-9:42 pm

1 stop17h 07m

$545

AppletonBarcelona

ATW - BCN

ATWBCN

Appleton Intl

Sun 9/28

7:00 am-7:15 am

2 stops17h 15m

Barcelona-El Prat

Tue 10/7

9:00 am-9:42 pm

2 stops19h 42m

$557

AppletonBarcelona

ATW - BCN

ATWBCN

Appleton Intl

Thu 10/16

2:45 pm-9:40 pm

2 stops23h 55m

Barcelona-El Prat

Mon 10/27

6:50 am-1:57 pm

2 stops37h 07m

$720

AppletonBarcelona

ATW - BCN

ATWBCN

Appleton Intl

Sat 12/13

12:30 pm-8:20 am

2 stops12h 50m

Barcelona-El Prat

Wed 12/31

1:35 pm-9:36 pm

2 stops39h 01m

$779

AppletonBarcelona

ATW - BCN

ATWBCN

Appleton Intl

Thu 10/16

6:45 pm-1:15 pm

1 stop11h 30m

Barcelona-El Prat

Mon 10/27

11:55 am-4:42 pm

2 stops34h 47m

$1,017

AppletonBarcelona

ATW - BCN

ATWBCN

Appleton Intl

Sat 12/13

5:23 am-8:40 am

1 stop20h 17m

Barcelona-El Prat

Wed 12/31

6:00 am-9:25 pm

2 stops22h 25m

$1,144

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

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, January is the cheapest month in which you can book a flight from Oshkosh to Barcelona (average of $523). Flying from Oshkosh to Barcelona in June is currently the most expensive (average of $1,059). 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 September 15, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Oshkosh to Barcelona as you normally would.

How much does it cost to fly round-trip from Oshkosh 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 September 15, 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
8,929 reviews

Entertainment

7.1

Crew

8.1

Comfort

7.3

Overall

7.4

Food

6.6

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,929 reviews
United Airlines
7.4
Good
8,929 reviews

Entertainment

7.1

Crew

8.1

Comfort

7.3

Overall

7.4

Food

6.6

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,929 reviews

Entertainment

7.1

Crew

8.1

Comfort

7.3

Overall

7.4

Food

6.6

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

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 15m. Fly via KLM, Delta, 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, January is the cheapest month in which you can book a flight from Oshkosh to Barcelona (average of $523). Flying from Oshkosh to Barcelona in June is currently the most expensive (average of $1,059). 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

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.

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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$544Average$902FlexibilityNo cancel feeOn-time69%
DeltaCheapest$580Average$879FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$619Average$881FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$637Average$988FlexibilityNo cancel feeOn-time71%

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