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$401+ 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 10/21. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BCN
May 6 — May 131
Tue 5/6
Tue 5/13
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 May 1, 2025.

Round-trip from

$542
(Delta)

One-way from

$401
(Gurufare)

Popular in

June

Cheapest in

November

Average price

$996
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. 31% potential increase in price ($334 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($42 potential savings vs. average RT price).
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Average for round-trip flights in May 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 May 1, 2025.

This Delta deal was found by Cheapflights users on 4/30. 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.
Mon 10/279:00 amSTL - BCN
1 stop16h 00mDelta
Wed 11/1210:15 amBCN - STL
1 stop17h 35mDelta
Deal found 4/30$542
This Finnair deal was found by Cheapflights users on 4/30. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/41:06 pmSTL - BCN
1 stop17h 14mMultiple Airlines
Tue 11/1111:00 amBCN - STL
2 stops18h 29mMultiple Airlines
Deal found 4/30$550
This Expedia deal was found by Cheapflights users on 4/30. 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 9/168:01 pmSTL - BCN
1 stop31h 29mBritish Airways
Mon 9/229:10 pmBCN - STL
2 stops28h 58mBritish Airways
Deal found 4/30$572
This United Airlines deal was found by Cheapflights users on 4/30. 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 10/2610:30 amSTL - BCN
1 stop20h 35mUnited Airlines
Thu 11/133:05 pmBCN - STL
1 stop12h 59mUnited Airlines
Deal found 4/30$582
This Scandinavian Airlines deal was found by Cheapflights users on 4/29. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/27:15 pmORD - BCN
2 stops31h 25mScandinavian Airlines
Sun 9/711:25 amBCN - ORD
2 stops35h 45mScandinavian Airlines
Deal found 4/29$585
This United Airlines deal was found by Cheapflights users on 4/28. 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 8/109:35 pmORD - BCN
Nonstop8h 40mUnited Airlines
Tue 8/1912:10 pmBCN - ORD
1 stop28h 42mUnited Airlines
Deal found 4/28$586
This Virgin Atlantic deal was found by Cheapflights users on 4/28. 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.
Fri 9/191:05 pmMDW - BCN
2 stops15h 50mVirgin Atlantic
Wed 9/249:30 amBCN - MDW
2 stops19h 14mVirgin Atlantic
Deal found 4/28$586
This Delta deal was found by Cheapflights users on 4/30. 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 9/79:30 amORD - BCN
1 stop16h 50mDelta
Sat 9/206:20 amBCN - ORD
2 stops17h 14mDelta
Deal found 4/30$587
This Delta deal was found by Cheapflights users on 4/29. 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 8/2410:35 amMDW - BCN
1 stop15h 45mDelta
Sun 8/316:10 amBCN - MDW
2 stops19h 18mDelta
Deal found 4/29$588
This ITA Airways deal was found by Cheapflights users on 4/29. 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 ITA Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/143:00 pmORD - BCN
1 stop12h 50mITA Airways
Fri 9/196:20 amBCN - ORD
1 stop13h 50mITA Airways
Deal found 4/29$589
This TAP AIR PORTUGAL deal was found by Cheapflights users on 4/29. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/256:00 pmORD - BCN
1 stop13h 10mTAP AIR PORTUGAL
Wed 10/16:00 amBCN - ORD
1 stop17h 10mTAP AIR PORTUGAL
Deal found 4/29$590
This Air Canada deal was found by Cheapflights users on 4/28. 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 8/1010:40 amORD - BCN
1 stop14h 10mAir Canada
Tue 8/1912:10 pmBCN - ORD
2 stops16h 57mAir Canada
Deal found 4/28$593

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 May 1, 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

Mon 10/27

9:00 am-7:00 am

1 stop16h 00m

Barcelona-El Prat

Wed 11/12

10:15 am-8:50 pm

1 stop17h 35m

$542

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Tue 9/16

8:01 pm-10:30 am

1 stop31h 29m

Barcelona-El Prat

Mon 9/22

9:10 pm-7:08 pm

2 stops28h 58m

$572

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Sun 10/26

10:30 am-1:05 pm

1 stop20h 35m

Barcelona-El Prat

Thu 11/13

3:05 pm-9:04 pm

1 stop12h 59m

$582

ChicagoBarcelona

ORD - BCN

ORDBCN

Chicago O'Hare Intl

Tue 9/2

7:15 pm-9:40 am

2 stops31h 25m

Barcelona-El Prat

Sun 9/7

11:25 am-4:10 pm

2 stops35h 45m

$585

ChicagoBarcelona

ORD - BCN

ORDBCN

Chicago O'Hare Intl

Sun 8/10

9:35 pm-1:15 pm

Nonstop8h 40m

Barcelona-El Prat

Tue 8/19

12:10 pm-9:52 am

1 stop28h 42m

$586

ChicagoBarcelona

ORD - BCN

ORDBCN

Chicago O'Hare Intl

Sun 9/7

9:30 am-9:20 am

1 stop16h 50m

Barcelona-El Prat

Sat 9/20

6:20 am-4:34 pm

2 stops17h 14m

$587

ChicagoBarcelona

MDW - BCN

MDWBCN

Chicago Midway

Thu 7/24

12:38 pm-9:20 am

1 stop13h 42m

Barcelona-El Prat

Wed 8/20

6:10 am-6:28 pm

2 stops19h 18m

$588

ChicagoBarcelona

ORD - BCN

ORDBCN

Chicago O'Hare Intl

Sun 9/14

3:00 pm-10:50 am

1 stop12h 50m

Barcelona-El Prat

Fri 9/19

6:20 am-1:10 pm

1 stop13h 50m

$589

ChicagoBarcelona

ORD - BCN

ORDBCN

Chicago O'Hare Intl

Thu 9/25

6:00 pm-2:10 pm

1 stop13h 10m

Barcelona-El Prat

Wed 10/1

6:00 am-4:10 pm

1 stop17h 10m

$590

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Thu 10/9

11:46 am-12:15 pm

1 stop17h 29m

Barcelona-El Prat

Thu 10/30

6:10 pm-8:26 am

1 stop20h 16m

$592

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 60 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 $1,064). 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 May 1, 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 May 1, 2025.

The most flights from USIL to S37 are scheduled on a Wednesday (7 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (2 on average).

Rainfall in Barcelona by month

Plan your trip to Barcelona by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Barcelona ranges from 0.8 - 3.6 inches per month. October is typically the wettest month, when rainfall can reach 3.6 in. July is typically the driest time to visit Barcelona when rainfall is around 0.8 in.

Temperature in Barcelona by month

Plan your trip to Barcelona by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Barcelona, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

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 May 1, 2025.
See what other customers who have flown with Delta, KLM and Air Transat from Illinois to Barcelona have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,934 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,334 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air Transat
7.8
Good
385 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Finnair
7.6
Good
1,275 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
SWISS
7.5
Good
1,588 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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 cheapest airlines to fly from Illinois to Barcelona one-way?

    The cheapest airline one-way is Aer Lingus, with whom users have recently found tickets for as low as $401. However, be on the lookout for offers from British Airways and WestJet, 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 (81%), Alaska Airlines (81%), Finnair( 81%).

  • What are the cheapest flights from Illinois to Barcelona?

    On average you can expect to pay $2,068 for a flight from Illinois to Barcelona. The cheapest flight overall is $464 while the most popular route, (Chicago O'Hare Intl - Barcelona-El Prat) is currently priced at $381.

  • 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 $1,064). 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.
John F Kennedy Intl to Barcelona-El Prat flights
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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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$226Average$622FlexibilityNo cancel feeOn-time70%
TAP AIR PORTUGALCheapest$342Average$468FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$349Average$413FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$424Average$596FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$477Average$832FlexibilityNo cancel feeOn-time67%
KLMCheapest$478Average$630FlexibilityNo cancel feeOn-time75%
Aer LingusCheapest$478Average$699FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$493Average$841FlexibilityNo cancel feeOn-time69%
IberiaCheapest$508Average$822FlexibilityNo cancel feeOn-time77%
DeltaCheapest$516Average$708FlexibilityNo cancel feeOn-timeN/A

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