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$233+ Cheap flights from Illinois 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 11/12. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BCN
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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Cheap flight deals from Illinois to Barcelona

Keep the following information in mind while searching for Illinois to Barcelona flight deals. Data was last updated August 14, 2025.

Round-trip from

$411
(United Airlines)

One-way from

$233
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$639
From Illinois to Barcelona
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One-way flight from Illinois to Barcelona
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Highest demand for flights based on searches. 30% potential increase in price ($315 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($41 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Illinois to Barcelona

Cheapest flights from Illinois to Barcelona
Explore the most affordable flight options available from Illinois to Barcelona. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

This United Airlines deal was found by Cheapflights users on 8/13. 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.
Wed 11/1210:00 amSTL - BCN
1 stop20h 05mUnited Airlines
Wed 11/191:35 pmBCN - STL
2 stops31h 50mUnited Airlines
Deal found 8/13$411
This Priceline deal was found by Cheapflights users on 8/13. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/126:30 amSTL - BCN
2 stops20h 05mAir Canada
Wed 11/191:35 pmBCN - STL
2 stops31h 50mAir Canada
Deal found 8/13$436
This Gurufare deal was found by Cheapflights users on 8/13. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1211:49 amSTL - BCN
1 stop14h 11mLufthansa
Wed 11/196:50 amBCN - STL
1 stop14h 05mLufthansa
Deal found 8/13$464
This United deal was found by Cheapflights users on 8/14. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/126:30 amSTL - BCN
1 stop23h 35mMultiple Airlines
Sun 11/161:35 pmBCN - STL
2 stops32h 54mMultiple Airlines
Deal found 8/14$468
This American Airlines deal was found by Cheapflights users on 8/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/85:40 pmORD - BCN
1 stop11h 25mAmerican Airlines
Wed 10/1510:45 amBCN - ORD
Nonstop9h 45mAmerican Airlines
Deal found 8/14$481
This United Airlines deal was found by Cheapflights users on 8/13. 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.
Mon 9/298:50 amORD - BCN
2 stops16h 00mUnited Airlines
Wed 10/812:10 pmBCN - ORD
1 stop15h 12mUnited Airlines
Deal found 8/13$482
This United Airlines deal was found by Cheapflights users on 8/13. 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.
Sun 10/122:08 pmORD - BCN
1 stop10h 42mUnited Airlines
Wed 10/221:15 pmBCN - ORD
2 stops29h 46mUnited Airlines
Deal found 8/13$484
This United Airlines deal was found by Cheapflights users on 8/12. 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 11/39:35 pmORD - BCN
Nonstop8h 30mUnited Airlines
Thu 11/131:45 pmBCN - ORD
1 stop13h 20mUnited Airlines
Deal found 8/12$486
This United Airlines deal was found by Cheapflights users on 8/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/218:25 pmORD - BCN
1 stop29h 55mUnited Airlines
Tue 10/73:15 pmBCN - ORD
Nonstop9h 50mUnited Airlines
Deal found 8/14$487
This United deal was found by Cheapflights users on 8/14. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/126:30 amSTL - BCN
1 stop23h 35mMultiple Airlines
Sat 11/151:35 pmBCN - STL
2 stops32h 54mMultiple Airlines
Deal found 8/14$488
This CheapOair deal was found by Cheapflights users on 8/14. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/69:15 pmORD - BCN
1 stop18h 10mAer Lingus
Mon 10/2011:05 pmBCN - ORD
1 stop21h 55mAer Lingus
Deal found 8/14$489
This Air Canada deal was found by Cheapflights users on 8/12. 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.
Sun 9/212:00 pmORD - BCN
1 stop12h 20mAir Canada
Wed 10/11:15 pmBCN - ORD
1 stop13h 14mAir Canada
Deal found 8/12$490

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois 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 August 14, 2025.
Use the filters below to find and compare flights from Illinois to Barcelona that are best for you.

Fly from

Illinois

Fly to

Barcelona

Route

Depart

Return

Price

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 11/12

10:00 am-1:05 pm

1 stop20h 05m

Barcelona-El Prat

Wed 11/19

1:35 pm-3:46 pm

2 stops33h 11m

$411

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 11/12

6:30 am-9:35 am

2 stops20h 05m

Barcelona-El Prat

Wed 11/19

1:35 pm-2:25 pm

2 stops31h 50m

$436

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 11/12

11:49 am-9:00 am

1 stop14h 11m

Barcelona-El Prat

Wed 11/19

6:50 am-1:55 pm

1 stop14h 05m

$464

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 11/12

6:30 am-1:05 pm

1 stop23h 35m

Barcelona-El Prat

Sun 11/16

1:35 pm-3:29 pm

2 stops32h 54m

$468

ChicagoBarcelona

ORD - BCN

ORDBCN

Chicago O'Hare Intl

Tue 9/30

9:00 am-7:50 am

2 stops15h 50m

Barcelona-El Prat

Thu 10/9

3:15 pm-6:05 pm

Nonstop9h 50m

$482

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 11/12

11:49 am-9:00 am

1 stop14h 11m

Barcelona-El Prat

Wed 11/19

6:50 am-1:55 pm

1 stop14h 05m

$483

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 11/12

10:00 am-1:05 pm

1 stop20h 05m

Barcelona-El Prat

Sun 11/16

6:50 am-1:55 pm

1 stop14h 05m

$483

ChicagoBarcelona

ORD - BCN

ORDBCN

Chicago O'Hare Intl

Wed 11/5

6:50 pm-2:05 pm

1 stop12h 15m

Barcelona-El Prat

Wed 11/12

1:35 pm-3:24 pm

2 stops32h 49m

$484

ChicagoBarcelona

ORD - BCN

ORDBCN

Chicago O'Hare Intl

Wed 11/5

6:50 pm-2:05 pm

1 stop12h 15m

Barcelona-El Prat

Tue 2/10

1:35 pm-12:15 pm

2 stops29h 40m

$484

ChicagoBarcelona

ORD - BCN

ORDBCN

Chicago O'Hare Intl

Sun 9/28

9:45 pm-1:15 pm

Nonstop8h 30m

Barcelona-El Prat

Tue 10/14

1:15 pm-1:14 pm

1 stop30h 59m

$484

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/14

Showing 1-10 of 52 results
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Best time to book a flight from Illinois to Barcelona

Have a flexible travel schedule? Discover the best time to fly to Barcelona from Illinois 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 Illinois to Barcelona

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

Currently, January is the cheapest month in which you can book a flight from Illinois to Barcelona (average of $523). Flying from Illinois to Barcelona in June is currently the most expensive (average of $1,057). 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 IL to BCN?

Find hourly flight availability from Illinois 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 August 14, 2025.

When flying from Illinois to Barcelona, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Illinois to Barcelona

Explore weekly flight availability from Illinois to Barcelona. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated August 14, 2025.

The most flights from USIL to S37 are scheduled on a Monday (7 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (7 on average).

How much does it cost to fly round-trip from Illinois to Barcelona?

Related info for your journey

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

  • What are the most popular routes from Illinois to Barcelona?

    The most popular flight routes from Illinois to Barcelona are Chicago O'Hare Intl - Barcelona-El Prat, Chicago Midway - Barcelona-El Prat and Lambert-St Louis - Barcelona-El Prat.

  • What are the most reliable airlines from Illinois to Barcelona?

    Before booking your flight to Barcelona from Illinois, check out the most reliable airlines to get you to your destination on time: American Airlines (78%), Alaska Airlines (78%), Finnair( 78%).

  • What are the cheapest flights from Illinois to Barcelona?

    On average you can expect to pay $2,751 for a flight from Illinois to Barcelona. The cheapest flight overall is $369 while the most popular route, (Chicago O'Hare Intl - Barcelona-El Prat) is currently priced at $355.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Illinois 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 Illinois to Barcelona?

    Currently, January is the cheapest month in which you can book a flight from Illinois to Barcelona (average of $523). Flying from Illinois to Barcelona in June is currently the most expensive (average of $1,057). 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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Alternative routes for Illinois to Barcelona

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Illinois to Barcelona

Discover the top 10 airlines that operate flights from Illinois 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 August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest$341Average$472FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$348Average$468FlexibilityNo cancel feeOn-time76%
Air FranceCheapest$401Average$775FlexibilityNo cancel feeOn-time77%
Scandinavian AirlinesCheapest$406Average$567FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$477Average$716FlexibilityNo cancel feeOn-time67%
KLMCheapest$478Average$687FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$481Average$648FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$484Average$813FlexibilityNo cancel feeOn-time69%
IberiaCheapest$489Average$816FlexibilityNo cancel feeOn-time77%
Aer LingusCheapest$490Average$710FlexibilityNo cancel feeOn-timeN/A

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