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$191+ 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 2/22. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BCN
dic. 26 — ene. 21
vie. 12/26
vie. 1/2
1 adult, Economy
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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 noviembre 26, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 11/25. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/210:49 amSTL - BCN
1 stop15h 11mIberia
mar. 12/912:30 pmBCN - STL
1 stop15h 08mIberia
Deal found 11/25$424
This Delta deal was found by Cheapflights users on 11/26. 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.
mié. 12/37:05 amSTL - BCN
1 stop18h 35mDelta
vie. 12/1210:55 amBCN - STL
1 stop14h 01mDelta
Deal found 11/26$426
This Delta deal was found by Cheapflights users on 11/26. 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.
mié. 12/39:30 amSTL - BCN
1 stop16h 10mDelta
jue. 12/1110:55 amBCN - STL
1 stop19h 47mDelta
Deal found 11/26$427
This American Airlines deal was found by Cheapflights users on 11/26. 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.
mié. 12/32:48 pmSTL - BCN
2 stops15h 52mAmerican Airlines
mié. 12/1012:30 pmBCN - STL
1 stop15h 08mAmerican Airlines
Deal found 11/26$431
This Delta deal was found by Cheapflights users on 11/25. 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.
mié. 12/36:05 amSTL - BCN
1 stop18h 55mDelta
mié. 12/1010:55 amBCN - STL
1 stop33h 21mDelta
Deal found 11/25$434
This Delta deal was found by Cheapflights users on 11/26. 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.
mié. 12/36:39 amSTL - BCN
2 stops18h 21mDelta
mar. 12/96:00 amBCN - STL
2 stops22h 57mDelta
Deal found 11/26$453
This Air France deal was found by Cheapflights users on 11/26. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/311:40 amSTL - BCN
1 stop14h 00mAir France
mar. 12/96:00 amBCN - STL
2 stops19h 33mAir France
Deal found 11/26$454
This Gurufare deal was found by Cheapflights users on 11/25. 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.
mié. 12/311:04 amSTL - BCN
1 stop14h 56mBritish Airways
mar. 12/912:30 pmBCN - STL
1 stop15h 08mBritish Airways
Deal found 11/25$464
This KAYAK deal was found by Cheapflights users on 11/24. 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.
dom. 11/306:30 pmORD - BCN
1 stop11h 45mIcelandair
dom. 1/2511:50 amBCN - ORD
1 stop12h 30mIcelandair
Deal found 11/24$465
This United Airlines deal was found by Cheapflights users on 11/23. 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.
mié. 12/108:45 amORD - BCN
1 stop16h 35mUnited Airlines
mar. 12/161:35 pmBCN - ORD
2 stops31h 50mUnited Airlines
Deal found 11/23$469
This United Airlines deal was found by Cheapflights users on 11/24. 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.
mar. 12/96:15 pmORD - BCN
1 stop31h 05mUnited Airlines
mar. 12/161:35 pmBCN - ORD
1 stop28h 43mUnited Airlines
Deal found 11/24$470
This Cheapflightsfares deal was found by Cheapflights users on 11/26. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/52:42 pmORD - BCN
1 stop11h 18mIberia
vie. 12/1212:30 pmBCN - ORD
1 stop15h 04mIberia
Deal found 11/26$473

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 noviembre 26, 2025.

Round-trip from

$429
(oojo)

One-way from

$191
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$567
From Illinois to Barcelona
Search Deals
One-way flight from Illinois to Barcelona
Search Deals
Highest demand for flights based on searches. 29% potential increase in price ($294 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($39 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

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 noviembre 26, 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

ChicagoBarcelona

ORD - BCN

ORDBCN

Chicago O'Hare Intl

lun. 1/12

3:35 pm-9:35 am

1 stop11h 00m

Barcelona-El Prat

mar. 1/20

1:35 pm-2:25 pm

2 stops31h 50m

$464

PeoriaBarcelona

PIA - BCN

PIABCN

Greater Peoria

vie. 2/6

6:30 am-5:35 pm

2 stops28h 05m

Barcelona-El Prat

mar. 2/10

1:35 pm-12:38 pm

2 stops30h 03m

$468

ChicagoBarcelona

ORD - BCN

ORDBCN

Chicago O'Hare Intl

mié. 12/10

8:45 am-8:20 am

1 stop16h 35m

Barcelona-El Prat

mar. 12/16

1:35 pm-2:25 pm

2 stops31h 50m

$469

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

dom. 1/11

3:50 pm-1:00 pm

1 stop14h 10m

Barcelona-El Prat

mar. 1/27

1:35 pm-12:29 pm

2 stops29h 54m

$475

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

vie. 2/6

9:57 am-4:20 pm

2 stops23h 23m

Barcelona-El Prat

mar. 2/10

1:35 pm-2:30 pm

2 stops31h 55m

$479

ChicagoBarcelona

MDW - BCN

MDWBCN

Chicago Midway

mar. 2/24

12:46 pm-8:40 am

1 stop12h 54m

Barcelona-El Prat

lun. 3/2

10:55 am-10:44 pm

1 stop18h 49m

$484

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

mar. 1/13

9:59 am-8:40 am

1 stop15h 41m

Barcelona-El Prat

mar. 1/27

10:15 am-8:06 pm

1 stop16h 51m

$484

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

mar. 1/13

12:44 pm-11:05 am

2 stops15h 21m

Barcelona-El Prat

dom. 1/25

6:50 am-1:55 pm

1 stop14h 05m

$484

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

mar. 1/13

12:00 pm-8:40 am

1 stop13h 40m

Barcelona-El Prat

dom. 1/25

10:55 am-8:37 pm

1 stop16h 42m

$484

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

vie. 1/30

9:45 am-8:00 am

1 stop15h 15m

Barcelona-El Prat

dom. 2/8

10:55 am-8:53 am

1 stop28h 58m

$484

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/25

Showing 1-10 of 54 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 $887). 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 noviembre 26, 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.

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 noviembre 26, 2025.

The most flights from USIL to S37 are scheduled on a Monday (2 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (2 on average).

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 $464, United Airlines can have you in Barcelona from Illinois in 11h. There are 4405 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 British Airways, with whom users have recently found tickets for as low as $249. However, be on the lookout for offers from American Airlines and Delta, 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 (77%), Alaska Airlines (77%), Finnair( 77%).

  • What are the cheapest flights from Illinois to Barcelona?

    On average you can expect to pay $3,011 for a flight from Illinois to Barcelona. The cheapest flight overall is $394 while the most popular route, (Chicago O'Hare Intl - Barcelona-El Prat) is currently priced at $351.

  • 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 $887). 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 noviembre 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$366Average$504FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$370Average$534FlexibilityNo cancel feeOn-timeN/A
Air FranceCheapest$401Average$629FlexibilityNo cancel feeOn-time77%
Scandinavian AirlinesCheapest$406Average$588FlexibilityNo cancel feeOn-time77%
Aer LingusCheapest$479Average$718FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$479Average$782FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$482Average$680FlexibilityNo cancel feeOn-time70%
Air CanadaCheapest$483Average$642FlexibilityNo cancel feeOn-time67%
IberiaCheapest$484Average$829FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$501Average$815FlexibilityNo cancel feeOn-time69%

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