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$186+ 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 3/2. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BCN
ene. 2 — ene. 91
vie. 1/2
vie. 1/9
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 diciembre 3, 2025.

This Justfly.com deal was found by Cheapflights users on 12/2. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/911:50 amSTL - BCN
1 stop14h 10mMultiple Airlines
jue. 12/251:35 pmBCN - STL
2 stops31h 51mMultiple Airlines
Deal found 12/2$411
This United Airlines deal was found by Cheapflights users on 12/2. 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. 12/98:30 amSTL - BCN
1 stop16h 50mUnited Airlines
jue. 12/251:35 pmBCN - STL
2 stops36h 43mUnited Airlines
Deal found 12/2$414
This Flighttix deal was found by Cheapflights users on 12/1. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/87:02 pmSTL - BCN
1 stop30h 38mVirgin Atlantic
mié. 12/249:30 amBCN - STL
1 stop13h 58mVirgin Atlantic
Deal found 12/1$422
This United Airlines deal was found by Cheapflights users on 12/1. 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.
lun. 12/811:25 amSTL - BCN
2 stops14h 35mUnited Airlines
mié. 12/2410:30 amBCN - STL
2 stops19h 13mUnited Airlines
Deal found 12/1$426
This FlightHub deal was found by Cheapflights users on 12/2. 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.
mar. 12/911:50 amSTL - BCN
1 stop14h 10mLufthansa
jue. 12/2511:00 amBCN - STL
1 stop19h 43mLufthansa
Deal found 12/2$430
This Delta deal was found by Cheapflights users on 12/2. 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.
mar. 12/96:00 amSTL - BCN
1 stop19h 40mDelta
jue. 12/2510:55 amBCN - STL
1 stop19h 43mDelta
Deal found 12/2$434
This Delta deal was found by Cheapflights users on 12/2. 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. 12/1011:40 amSTL - BCN
1 stop14h 00mDelta
jue. 12/256:00 amBCN - STL
2 stops18h 00mDelta
Deal found 12/2$461
This United Airlines deal was found by Cheapflights users on 12/2. 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.
jue. 12/1112:55 pmSTL - BCN
1 stop12h 25mUnited Airlines
jue. 12/251:35 pmBCN - STL
2 stops36h 43mUnited Airlines
Deal found 12/2$464
This Cheapflightsfares deal was found by Cheapflights users on 12/3. 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.
mié. 12/106:35 pmORD - BCN
2 stops31h 30mSWISS
dom. 1/117:50 pmBCN - ORD
1 stop23h 55mSWISS
Deal found 12/3$482
This Delta deal was found by Cheapflights users on 12/1. 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.
dom. 12/77:00 amORD - BCN
1 stop18h 00mDelta
lun. 12/1510:15 amBCN - ORD
1 stop14h 31mDelta
Deal found 12/1$484
This United Airlines deal was found by Cheapflights users on 12/3. 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.
jue. 12/111:05 pmORD - BCN
1 stop12h 15mUnited Airlines
mar. 12/161:35 pmBCN - ORD
2 stops15h 22mUnited Airlines
Deal found 12/3$487
This KAYAK deal was found by Cheapflights users on 12/2. 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.
jue. 12/1112:55 pmSTL - BCN
1 stop12h 25mLufthansa
jue. 12/2511:00 amBCN - STL
1 stop19h 43mLufthansa
Deal found 12/2$494

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 diciembre 3, 2025.

Round-trip from

$411
(Justfly.com)

One-way from

$186
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$768
From Illinois to Barcelona
Search Deals
One-way flight from Illinois to Barcelona
Search Deals
Highest demand for flights based on searches. 28% 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 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 diciembre 3, 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

mié. 1/7

6:40 pm-1:05 pm

2 stops35h 25m

Barcelona-El Prat

mié. 1/14

11:00 am-11:59 pm

1 stop19h 59m

$411

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

dom. 2/1

11:55 am-8:50 am

1 stop13h 55m

Barcelona-El Prat

mar. 2/17

11:00 am-10:05 pm

1 stop18h 05m

$434

MolineBarcelona

MLI - BCN

MLIBCN

Moline Quad-City

mié. 1/21

5:51 am-8:00 am

2 stops19h 09m

Barcelona-El Prat

vie. 2/6

10:55 am-10:33 pm

1 stop18h 38m

$438

MolineBarcelona

MLI - BCN

MLIBCN

Moline Quad-City

lun. 2/16

5:00 pm-7:20 pm

2 stops19h 20m

Barcelona-El Prat

mar. 3/3

10:55 am-10:30 pm

1 stop18h 35m

$453

PeoriaBarcelona

PIA - BCN

PIABCN

Greater Peoria

vie. 1/16

5:16 pm-10:35 pm

2 stops22h 19m

Barcelona-El Prat

vie. 1/23

10:10 am-10:21 pm

2 stops19h 11m

$458

MolineBarcelona

MLI - BCN

MLIBCN

Moline Quad-City

mié. 1/21

5:11 pm-8:40 am

1 stop32h 29m

Barcelona-El Prat

vie. 2/6

10:55 am-10:33 pm

1 stop18h 38m

$464

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

vie. 2/6

10:19 am-5:05 pm

2 stops23h 46m

Barcelona-El Prat

mar. 2/10

10:15 am-11:37 pm

2 stops20h 22m

$467

PeoriaBarcelona

PIA - BCN

PIABCN

Greater Peoria

vie. 2/6

3:00 pm-5:35 pm

2 stops19h 35m

Barcelona-El Prat

mar. 2/10

1:35 pm-10:10 am

2 stops27h 35m

$468

PeoriaBarcelona

PIA - BCN

PIABCN

Greater Peoria

vie. 1/16

11:15 am-11:35 am

2 stops17h 20m

Barcelona-El Prat

vie. 1/23

10:40 am-9:43 pm

1 stop18h 03m

$480

ChicagoBarcelona

ORD - BCN

ORDBCN

Chicago O'Hare Intl

mié. 2/25

9:45 pm-4:30 pm

1 stop11h 45m

Barcelona-El Prat

lun. 3/2

12:40 pm-6:45 pm

1 stop13h 05m

$482

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/1

Showing 1-10 of 56 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 diciembre 3, 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.

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.

  • How long is the flight from Illinois to Barcelona?

    For as low as $438, Lufthansa can have you in Barcelona from Illinois in 19h 09m. There are 4537 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 $2,869 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 $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 $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 diciembre 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$366Average$499FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$373Average$533FlexibilityNo cancel feeOn-timeN/A
Air FranceCheapest$401Average$629FlexibilityNo cancel feeOn-time77%
Scandinavian AirlinesCheapest$406Average$592FlexibilityNo cancel feeOn-time77%
Aer LingusCheapest$478Average$684FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$479Average$992FlexibilityNo cancel feeOn-time75%
Air CanadaCheapest$483Average$625FlexibilityNo cancel feeOn-time67%
British AirwaysCheapest$483Average$677FlexibilityNo cancel feeOn-time70%
IberiaCheapest$485Average$830FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$500Average$813FlexibilityNo cancel feeOn-time69%

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