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$223+ 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 1/20. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BCN
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap 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 December 12, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/304:10 pmORD - BCN
1 stop23h 50mSWISS
Mon 1/127:50 pmBCN - ORD
1 stop23h 55mSWISS
Deal found 12/11$478
This Delta deal was found by Cheapflights users on 12/11. 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.
Tue 12/306:08 pmMDW - BCN
2 stops31h 32mDelta
Mon 1/1211:10 amBCN - MDW
2 stops38h 22mDelta
Deal found 12/11$503
This United Airlines deal was found by Cheapflights users on 12/10. 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.
Tue 12/309:15 pmORD - BCN
2 stops29h 20mUnited Airlines
Mon 1/129:55 amBCN - ORD
1 stop32h 15mUnited Airlines
Deal found 12/10$509
This KAYAK deal was found by Cheapflights users on 12/11. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/304:10 pmORD - BCN
1 stop33h 55mSWISS
Wed 1/77:50 pmBCN - ORD
2 stops49h 20mSWISS
Deal found 12/11$512
This Expedia deal was found by Cheapflights users on 12/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/309:20 pmORD - BCN
2 stops29h 15mMultiple Airlines
Thu 1/87:50 pmBCN - ORD
2 stops25h 20mMultiple Airlines
Deal found 12/11$513
This KAYAK deal was found by Cheapflights users on 12/11. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/303:45 pmORD - BCN
2 stops34h 20mSWISS
Thu 1/87:50 pmBCN - ORD
2 stops25h 20mSWISS
Deal found 12/11$519
This Kiwi.com deal was found by Cheapflights users on 12/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/304:10 pmORD - BCN
1 stop23h 50mSWISS
Sun 1/117:50 pmBCN - ORD
1 stop23h 55mSWISS
Deal found 12/11$521
This KAYAK deal was found by Cheapflights users on 12/10. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/313:45 pmORD - BCN
2 stops24h 15mSWISS
Wed 1/77:50 pmBCN - ORD
2 stops52h 10mSWISS
Deal found 12/10$529
This United Airlines deal was found by Cheapflights users on 12/11. 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.
Tue 12/307:00 amORD - BCN
1 stop18h 20mUnited Airlines
Fri 1/96:50 amBCN - ORD
2 stops17h 10mUnited Airlines
Deal found 12/11$530
This KAYAK deal was found by Cheapflights users on 12/11. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/296:10 pmORD - BCN
2 stops55h 55mSWISS
Thu 1/82:55 pmBCN - ORD
2 stops30h 15mSWISS
Deal found 12/11$532
This FlightHub deal was found by Cheapflights users on 12/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/306:00 pmORD - BCN
2 stops32h 35mMultiple Airlines
Sun 1/117:50 pmBCN - ORD
1 stop23h 55mMultiple Airlines
Deal found 12/11$536
This KAYAK deal was found by Cheapflights users on 12/11. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/296:10 pmORD - BCN
2 stops45h 50mSWISS
Wed 1/77:50 pmBCN - ORD
2 stops52h 10mSWISS
Deal found 12/11$541

Find flight deals from Illinois to Barcelona

Keep the following information in mind while searching for Illinois to Barcelona flight deals. Data was last updated December 12, 2025.

Round-trip from

$437
(Kiwi.com)

One-way from

$223
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$722
From Illinois to Barcelona
Search Deals
One-way flight from Illinois to Barcelona
Search Deals
Highest demand for flights based on searches. 30% potential increase in price ($305 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($40 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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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 December 12, 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

PeoriaBarcelona

PIA - BCN

PIABCN

Greater Peoria

Fri 2/6

6:30 am-9:00 am

2 stops19h 30m

Barcelona-El Prat

Tue 2/10

1:35 pm-9:39 pm

2 stops39h 04m

$469

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Sat 1/24

3:11 pm-5:35 pm

2 stops19h 24m

Barcelona-El Prat

Sat 1/31

1:35 pm-2:30 pm

2 stops31h 55m

$472

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Thu 3/19

2:00 pm-11:25 am

2 stops15h 25m

Barcelona-El Prat

Thu 3/26

6:40 am-6:07 pm

2 stops17h 27m

$481

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Sat 3/7

1:33 pm-1:45 pm

2 stops17h 12m

Barcelona-El Prat

Sat 3/14

8:40 pm-5:13 pm

2 stops26h 33m

$481

ChicagoBarcelona

ORD - BCN

ORDBCN

Chicago O'Hare Intl

Sun 3/1

6:04 pm-9:35 am

2 stops32h 31m

Barcelona-El Prat

Wed 3/25

9:55 am-9:05 pm

1 stop17h 10m

$484

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Thu 3/19

11:59 am-11:55 am

1 stop17h 56m

Barcelona-El Prat

Thu 3/26

11:15 am-11:04 pm

1 stop17h 49m

$484

ChicagoBarcelona

ORD - BCN

ORDBCN

Chicago O'Hare Intl

Mon 2/16

12:50 pm-9:35 am

1 stop13h 45m

Barcelona-El Prat

Fri 2/27

6:50 am-1:25 pm

1 stop13h 35m

$484

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Sat 3/7

6:00 am-8:00 am

1 stop19h 00m

Barcelona-El Prat

Sat 3/14

11:00 am-9:51 pm

1 stop16h 51m

$484

MolineBarcelona

MLI - BCN

MLIBCN

Moline Quad-City

Fri 1/16

10:47 am-5:45 pm

2 stops23h 58m

Barcelona-El Prat

Fri 1/23

7:40 am-4:54 pm

2 stops16h 14m

$488

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Thu 1/15

12:11 pm-11:55 am

1 stop16h 44m

Barcelona-El Prat

Sun 2/1

3:05 pm-8:49 am

2 stops24h 44m

$488

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Showing 1-10 of 58 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, August is the cheapest month in which you can book a flight from Illinois to Barcelona (average of $369). Flying from Illinois to Barcelona in June is currently the most expensive (average of $889). 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 December 12, 2025.

A simple way to save on the total cost of your ticket is to fly from Illinois to Barcelona in the evening. If you’re flexible enough to do this you can expect to save up to 45% on your trip compared to booking a flight in the morning.

What is the cheapest day to fly from Illinois to Barcelona?

Use this chart to determine the cheapest time to fly round-trip from Illinois to Barcelona. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Illinois to Barcelona flight should consider departing on Monday at noon when fares are most often at their lowest. Friday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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.

  • How long is the flight from Illinois to Barcelona?

    For as low as $481, United Airlines can have you in Barcelona from Illinois in 15h 25m. There are 4638 mi between Illinois and Barcelona. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Illinois to Barcelona one-way?

    The cheapest airline one-way is TAP AIR PORTUGAL, with whom users have recently found tickets for as low as $186. However, be on the lookout for offers from Scandinavian Airlines and Icelandair, as they are both options that can get you from Illinois to Barcelona for a low price.

  • 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 (70%), Alaska Airlines (70%), Finnair( 70%).

  • What are the cheapest flights from Illinois to Barcelona?

    On average you can expect to pay $3,302 for a flight from Illinois to Barcelona. The cheapest flight overall is $421 while the most popular route, (Chicago O'Hare Intl - Barcelona-El Prat) is currently priced at $357.

  • 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, August is the cheapest month in which you can book a flight from Illinois to Barcelona (average of $369). Flying from Illinois to Barcelona in June is currently the most expensive (average of $889). 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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$366Average$485FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$372Average$543FlexibilityNo cancel feeOn-timeN/A
Air FranceCheapest$401Average$629FlexibilityNo cancel feeOn-time77%
Scandinavian AirlinesCheapest$406Average$593FlexibilityNo cancel feeOn-time77%
Aer LingusCheapest$478Average$707FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$479Average$992FlexibilityNo cancel feeOn-time75%
IberiaCheapest$482Average$830FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$482Average$609FlexibilityNo cancel feeOn-time67%
British AirwaysCheapest$483Average$677FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$496Average$814FlexibilityNo cancel feeOn-time69%

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