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Cheap flights from Illinois to Barcelona from $307

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Barcelona departing on 12/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Illinois to Barcelona

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
5:17 pm - 8:40 amSTL-BCN
32h 23m1 stop
Delta Logo
10:15 am - 8:17 pmBCN-STL
17h 02m1 stop
$434Delta
Find Deal
Sun, Nov 30 - Tue, Dec 9
Delta Logo
6:39 am - 8:00 amSTL-BCN
18h 21m2 stops
Delta Logo
10:15 am - 8:47 pmBCN-STL
17h 32m2 stops
$438Delta
Find Deal
Tue, Dec 2 - Tue, Dec 9
Lufthansa Logo
6:43 pm - 5:45 pmSTL-BCN
16h 02m2 stops
Lufthansa Logo
1:50 pm - 1:55 pmBCN-STL
31h 05m1 stop
$450Lufthansa
Find Deal
Mon, Nov 24 - Tue, Dec 2
Scandinavian Airlines Logo
7:01 am - 6:20 pmORD-BCN
28h 19m2 stops
Scandinavian Airlines Logo
7:10 pm - 5:45 pmBCN-ORD
28h 35m1 stop
$453Scandinavian Airlines
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Wed, Mar 4 - Sat, Mar 14
TAP AIR PORTUGAL Logo
8:10 pm - 1:45 pmORD-BCN
11h 35m1 stop
TAP AIR PORTUGAL Logo
10:40 pm - 4:00 pmBCN-ORD
24h 20m1 stop
$454TAP AIR PORTUGAL
Find Deal
Wed, Mar 11 - Tue, Jun 16
United Airlines Logo
11:59 pm - 8:20 amORD-BCN
25h 21m1 stop
United Airlines Logo
1:35 pm - 11:18 amBCN-ORD
28h 43m1 stop
$456United Airlines
Find Deal
Sat, Nov 29 - Thu, Dec 11
TAP AIR PORTUGAL Logo
6:15 pm - 1:30 amORD-BCN
24h 15m1 stop
TAP AIR PORTUGAL Logo
3:00 pm - 4:00 pmBCN-ORD
32h 00m1 stop
$458TAP AIR PORTUGAL
Find Deal
Sat, May 2 - Sat, May 9
Scandinavian Airlines Logo
7:20 pm - 6:20 pmORD-BCN
16h 00m1 stop
Scandinavian Airlines Logo
7:10 pm - 5:45 pmBCN-ORD
28h 35m1 stop
$464Scandinavian Airlines
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Thu, Mar 5 - Tue, Mar 10
United Airlines Logo
5:52 pm - 9:35 amORD-BCN
32h 43m1 stop
United Airlines Logo
5:50 am - 3:20 pmBCN-ORD
16h 30m1 stop
$471United Airlines
Find Deal
Sat, Feb 7 - Fri, Feb 20
Lufthansa Logo
6:43 pm - 11:05 pmSTL-BCN
21h 22m2 stops
Lufthansa Logo
6:50 am - 5:03 pmBCN-STL
41h 13m2 stops
$497Lufthansa
Find Deal
Mon, Dec 1 - Fri, Dec 12

Delta flights from Illinois to Barcelona-El Prat Airport

Our best Delta deals on Illinois to Barcelona-El Prat Airport flight tickets
Delta
Nov 30
STL5:17 pmLambert-St Louis
32h 23m
1 stop
BCN8:40 amBarcelona-El Prat
Dec 9
BCN10:15 amBarcelona-El Prat
17h 02m
1 stop
STL8:17 pmLambert-St Louis
$434
Find similar
Delta
Dec 2
STL6:39 amLambert-St Louis
18h 21m
2 stops
BCN8:00 amBarcelona-El Prat
Dec 9
BCN10:15 amBarcelona-El Prat
17h 32m
2 stops
STL8:47 pmLambert-St Louis
$438
Find similar
Delta
Feb 10
ORD7:01 amChicago O'Hare Intl
18h 49m
2 stops
BCN8:50 amBarcelona-El Prat
Feb 20
BCN10:15 amBarcelona-El Prat
14h 30m
1 stop
ORD5:45 pmChicago O'Hare Intl
$452
Find similar

Lufthansa flights from Illinois to Barcelona-El Prat Airport

Our best Lufthansa deals on Illinois to Barcelona-El Prat Airport flight tickets
Lufthansa
Nov 24
STL6:43 pmLambert-St Louis
16h 02m
2 stops
BCN5:45 pmBarcelona-El Prat
Dec 2
BCN1:50 pmBarcelona-El Prat
31h 05m
1 stop
STL1:55 pmLambert-St Louis
$450
Find similar
Lufthansa
Dec 1
STL6:43 pmLambert-St Louis
21h 22m
2 stops
BCN11:05 pmBarcelona-El Prat
Dec 12
BCN6:50 amBarcelona-El Prat
41h 13m
2 stops
STL5:03 pmLambert-St Louis
$497
Find similar
Lufthansa
Dec 1
STL6:43 pmLambert-St Louis
15h 52m
2 stops
BCN5:35 pmBarcelona-El Prat
Dec 11
BCN12:45 pmBarcelona-El Prat
32h 10m
1 stop
STL1:55 pmLambert-St Louis
$506
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Illinois to Barcelona-El Prat Airport 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, momondo users made 832,500 searches. Data last updated November 10, 2025.
Use the filters below to find and compare flights from Illinois to Barcelona-El Prat Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Sun 11/30

5:17 pm-8:40 am

1 stop32h 23m

Barcelona-El Prat

Tue 12/9

10:15 am-8:17 pm

1 stop17h 02m

$434

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Tue 12/2

6:39 am-8:00 am

2 stops18h 21m

Barcelona-El Prat

Tue 12/9

10:15 am-8:47 pm

2 stops17h 32m

$438

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Mon 11/24

6:43 pm-5:45 pm

2 stops16h 02m

Barcelona-El Prat

Tue 12/2

1:50 pm-1:55 pm

1 stop31h 05m

$450

ChicagoBarcelona

ORD - BCN

ORDBCN

Chicago O'Hare Intl

Wed 3/4

7:01 am-6:20 pm

2 stops28h 19m

Barcelona-El Prat

Sat 3/14

7:10 pm-5:45 pm

1 stop28h 35m

$453

ChicagoBarcelona

ORD - BCN

ORDBCN

Chicago O'Hare Intl

Wed 3/11

8:10 pm-1:45 pm

1 stop11h 35m

Barcelona-El Prat

Tue 6/16

10:40 pm-4:00 pm

1 stop24h 20m

$454

ChicagoBarcelona

ORD - BCN

ORDBCN

Chicago O'Hare Intl

Sat 11/29

11:59 pm-8:20 am

1 stop25h 21m

Barcelona-El Prat

Thu 12/11

1:35 pm-11:18 am

1 stop28h 43m

$456

ChicagoBarcelona

ORD - BCN

ORDBCN

Chicago O'Hare Intl

Sat 5/2

6:15 pm-1:30 am

1 stop24h 15m

Barcelona-El Prat

Sat 5/9

3:00 pm-4:00 pm

1 stop32h 00m

$458

ChicagoBarcelona

ORD - BCN

ORDBCN

Chicago O'Hare Intl

Thu 3/5

7:20 pm-6:20 pm

1 stop16h 00m

Barcelona-El Prat

Tue 3/10

7:10 pm-5:45 pm

1 stop28h 35m

$464

ChicagoBarcelona

ORD - BCN

ORDBCN

Chicago O'Hare Intl

Sat 2/7

5:52 pm-9:35 am

1 stop32h 43m

Barcelona-El Prat

Fri 2/20

5:50 am-3:20 pm

1 stop16h 30m

$471

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Mon 12/1

6:43 pm-11:05 pm

2 stops21h 22m

Barcelona-El Prat

Fri 12/12

6:50 am-5:03 pm

2 stops41h 13m

$497

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Illinois to Barcelona-El Prat Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Barcelona-El Prat Airport?

The cheapest month to fly to Barcelona-El Prat Airport from Illinois is in February. Flight prices, which tend to average around $555, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of February, then book flights to Barcelona-El Prat Airport from Illinois during January instead. Flights to Barcelona-El Prat Airport in January, while not as cheap as those in February, still average around $556.

What is the cheapest day to depart on your flight to Barcelona-El Prat Airport?

The cheapest day to depart on your flight to Barcelona-El Prat Airport is on a Sunday when prices can be found for as low as $771. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Thursday because tickets tend to average around $990. These prices are subject to change though, so be sure to set up a Price Alert for flights to Barcelona-El Prat Airport.

What is the cheapest time of day to depart on your flight to Barcelona-El Prat Airport?

Flying to Barcelona-El Prat Airport from Illinois in the morning is the least expensive time of day to depart. momondo users have found prices as low as $683 when looking at flights departing in the morning. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $912 on average. Flights to Barcelona-El Prat Airport from Illinois in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Illinois to Barcelona-El Prat flight route?

Fly from Chicago O'Hare Intl to Barcelona-El Prat for the best Illinois - Barcelona-El Prat flight prices

How far in advance should I book a flight to Barcelona-El Prat Airport?

You are more likely to see cheaper flights to Barcelona-El Prat Airport from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Barcelona-El Prat Airport for around $761 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Barcelona-El Prat Airport from Illinois for as low as $650 on momondo.

What cabin class options are available on Illinois to Barcelona-El Prat flights?

There are 3 cabin classes available to choose from on Illinois to Barcelona-El Prat flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Cheap Illinois to Barcelona-El Prat Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Barcelona-El Prat Airport

Best Price Found

$394

Fastest flight time

8h 30m

Direct flights

Every day
The best one-way flight to Barcelona-El Prat Airport from Illinois in the past 72 hours is $394. The best round-trip flight deal from Illinois to Barcelona-El Prat Airport found on momondo in the last 72 hours is $557.
The fastest flight from Illinois to Barcelona-El Prat Airport takes 8h 30m
Direct flights go from Illinois to Barcelona-El Prat Airport every day.
Search flight deals

  • When did momondo last update prices for flights from Illinois to Barcelona-El Prat Airport?

    Prices for flights from Illinois to Barcelona-El Prat Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Illinois to Barcelona-El Prat Airport?

  • How old do you have to be to fly from Illinois to Barcelona-El Prat Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Illinois to Barcelona-El Prat Airport.

  • What documentation or ID do you need to fly to Barcelona-El Prat Airport?

    The travel and health documents you'll need for your trip to Barcelona-El Prat Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Barcelona-El Prat Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Illinois to Barcelona-El Prat Airport?

Best airlines flying from Illinois to Barcelona-El Prat Airport

Compare and see reviews for airlines that fly from Illinois to Barcelona-El Prat Airport with momondo
Airline
Rating
Free Cancellation
Price
IcelandairPriceFrom $366Free CancellationRating
7.0
576 reviews
Search Icelandair flights
TAP AIR PORTUGALPriceFrom $369Free CancellationRating
7.1
2,057 reviews
Search TAP AIR PORTUGAL flights
Air FrancePriceFrom $401Free CancellationRating
7.4
1,486 reviews
Search Air France flights
Scandinavian AirlinesPriceFrom $406Free CancellationRating
7.4
1,570 reviews
Search Scandinavian Airlines flights
KLMPriceFrom $479Free CancellationRating
7.7
1,410 reviews
Search KLM flights
Air CanadaPriceFrom $483Free CancellationRating
7.1
10,431 reviews
Search Air Canada flights
British AirwaysPriceFrom $485Free CancellationRating
6.7
7,510 reviews
Search British Airways flights
IberiaPriceFrom $486Free CancellationRating
7.0
3,008 reviews
Search Iberia flights
Aer LingusPriceFrom $490Free CancellationRating
7.2
1,366 reviews
Search Aer Lingus flights
United AirlinesPriceFrom $500Free CancellationRating
7.4
9,012 reviews
Search United Airlines flights

Traveling to a place near Barcelona?

Book flights to Barcelona if you plan to visit one of these locations
Lloret de Mar
Sitges
Salou
Tossa de Mar
Castelldefels
El Prat de Llobregat
L'Hospitalet de Llobregat
Tarragona
Santa Susanna
Cambrils
Cadaques
Empuriabrava
Pineda de Mar
Roses
Badalona
Calella
Pals
Palafrugell
Tortosa
La Pineda

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Barcelona?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Barcelona from Illinois.

Can I find flights from Illinois to Barcelona with flexible booking policies on momondo?

momondo does allow users to show only those flights to Barcelona from Illinois which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Illinois to Barcelona?

momondo helps you find the best flight between Illinois and Barcelona by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Illinois to Barcelona right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Barcelona from Illinois. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Barcelona-El Prat Airport trip

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