How does KAYAK find such low prices on flights from Illinois to Madrid?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Madrid.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Madrid?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Madrid from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Illinois to Madrid?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Madrid with an airline and back to Illinois with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Madrid?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Madrid from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

$316 CHEAP FLIGHTS from Illinois to Madrid

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Cheap Flights from Illinois to Madrid

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Illinois to Madrid

Sun, Jan 17 - Wed, Jan 27

6:30 am - 7:20 amSTL Lambert-St Louis-MAD Madrid Barajas

17h 50m2 stops Minneapolis St Paul New York John F Kennedy Intl

9:20 am - 8:49 pmMAD Madrid Barajas-STL Lambert-St Louis

18h 29m2 stops New York John F Kennedy Intl Atlanta Hartsfield-Jackson

$642Virgin Atlantic

Sun, Jan 17 - Wed, Jan 27

9:51 am - 6:10 amSTL Lambert-St Louis-MAD Madrid Barajas

13h 19m1 stop Dallas/Fort Worth

1:00 pm - 8:19 pmMAD Madrid Barajas-STL Lambert-St Louis

14h 19m1 stop Dallas/Fort Worth

$647Iberia

Sun, Oct 4 - Tue, Oct 20

12:10 pm - 6:50 amSTL Lambert-St Louis-MAD Madrid Barajas

11h 40m1 stop Montreal Pierre Elliott Trudeau Intl

1:30 pm - 2:00 pmMAD Madrid Barajas-STL Lambert-St Louis

31h 30m1 stop Toronto Pearson Intl

$689Air Canada

Sun, Dec 6 - Thu, Dec 10

9:34 pm - 8:00 amORD Chicago O'Hare Intl-MAD Madrid Barajas

27h 26m2 stops Newark Montreal Pierre Elliott Trudeau Intl

6:05 am - 1:10 pmMAD Madrid Barajas-ORD Chicago O'Hare Intl

14h 05m1 stop Frankfurt am Main

$693Multiple Airlines

Thu, Oct 1 - Thu, Oct 15

6:00 pm - 12:40 pmORD Chicago O'Hare Intl-MAD Madrid Barajas

11h 40m1 stop Lisbon Humberto Delgado

7:40 am - 12:40 pmMAD Madrid Barajas-ORD Chicago O'Hare Intl

12h 00m1 stop Lisbon Humberto Delgado

$696TAP AIR PORTUGAL

Tue, Oct 6 - Fri, Oct 23

4:55 pm - 8:20 amORD Chicago O'Hare Intl-MAD Madrid Barajas

8h 25mnonstop

11:45 am - 2:25 pmMAD Madrid Barajas-ORD Chicago O'Hare Intl

9h 40mnonstop

$697Finnair

Wed, Nov 11 - Wed, Nov 18

6:05 pm - 9:25 amORD Chicago O'Hare Intl-MAD Madrid Barajas

8h 20mnonstop

12:40 pm - 3:05 pmMAD Madrid Barajas-ORD Chicago O'Hare Intl

9h 25mnonstop

$697Finnair

Mon, Nov 30 - Wed, Dec 9

5:40 pm - 8:50 amORD Chicago O'Hare Intl-MAD Madrid Barajas

8h 10mnonstop

12:00 pm - 2:55 pmMAD Madrid Barajas-ORD Chicago O'Hare Intl

9h 55mnonstop

$697Iberia

Sun, Nov 1 - Tue, Nov 10

1:00 pm - 2:05 pmORD Chicago O'Hare Intl-MAD Madrid Barajas

18h 05m2 stops Boston Logan Intl Lisbon Humberto Delgado

6:00 pm - 3:30 pmMAD Madrid Barajas-ORD Chicago O'Hare Intl

28h 30m1 stop Lisbon Humberto Delgado

$700TAP AIR PORTUGAL

Sun, Feb 14 - Wed, Feb 24

1:00 pm - 9:45 amMDW Chicago Midway-MAD Madrid Barajas

13h 45m2 stops Detroit Metropolitan Wayne County Atlanta Hartsfield-Jackson

12:20 pm - 4:25 pmMAD Madrid Barajas-MDW Chicago Midway

35h 05m1 stop Atlanta Hartsfield-Jackson

$710Virgin Atlantic

Recent last minute flight deals from Illinois to Madrid

Thu, Sep 10 - Thu, Sep 17

6:00 pm - 5:00 pmORD Chicago O'Hare Intl-MAD Madrid Barajas

16h 00m1 stop Lisbon Humberto Delgado

6:00 pm - 4:00 pmMAD Madrid Barajas-ORD Chicago O'Hare Intl

29h 00m1 stop Lisbon Humberto Delgado

$696TAP AIR PORTUGAL

Thu, Sep 10 - Thu, Sep 17

6:00 pm - 5:00 pmORD Chicago O'Hare Intl-MAD Madrid Barajas

16h 00m1 stop Lisbon Humberto Delgado

4:20 pm - 4:00 pmMAD Madrid Barajas-ORD Chicago O'Hare Intl

30h 40m1 stop Lisbon Humberto Delgado

$696TAP AIR PORTUGAL

Thu, Sep 10 - Thu, Sep 17

10:29 am - 9:10 amORD Chicago O'Hare Intl-MAD Madrid Barajas

15h 41m2 stops Boston Logan Intl Paris Charles de Gaulle

6:00 am - 2:15 pmMAD Madrid Barajas-ORD Chicago O'Hare Intl

15h 15m1 stop Amsterdam Schiphol

$798Delta

Thu, Sep 10 - Wed, Sep 16

10:29 am - 6:20 amORD Chicago O'Hare Intl-MAD Madrid Barajas

12h 51m1 stop Boston Logan Intl

10:25 am - 8:30 pmMAD Madrid Barajas-ORD Chicago O'Hare Intl

17h 05m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County

$803Delta

Thu, Sep 10 - Mon, Sep 14

10:29 am - 6:20 amORD Chicago O'Hare Intl-MAD Madrid Barajas

12h 51m1 stop Boston Logan Intl

2:35 pm - 10:32 pmMAD Madrid Barajas-ORD Chicago O'Hare Intl

14h 57m1 stop Boston Logan Intl

$839KLM

Sun, Sep 13 - Wed, Sep 23

3:45 pm - 9:55 amORD Chicago O'Hare Intl-MAD Madrid Barajas

11h 10m1 stop Dublin

11:45 am - 2:25 pmMAD Madrid Barajas-ORD Chicago O'Hare Intl

9h 40mnonstop

$867Aer Lingus

Sun, Sep 13 - Wed, Oct 14

11:05 am - 5:25 pmORD Chicago O'Hare Intl-MAD Madrid Barajas

23h 20m2 stops Montreal Pierre Elliott Trudeau Intl Toulouse Blagnac

8:10 pm - 12:40 pmMAD Madrid Barajas-ORD Chicago O'Hare Intl

23h 30m1 stop Lisbon Humberto Delgado

$871Multiple Airlines

Sun, Sep 13 - Fri, Sep 18

7:05 pm - 11:20 pmORD Chicago O'Hare Intl-MAD Madrid Barajas

21h 15m2 stops Zurich Marseille

7:40 am - 4:00 pmMAD Madrid Barajas-ORD Chicago O'Hare Intl

15h 20m1 stop Lisbon Humberto Delgado

$888Multiple Airlines

Wed, Sep 9 - Thu, Sep 24

4:50 pm - 12:10 pmORD Chicago O'Hare Intl-MAD Madrid Barajas

12h 20m1 stop Amsterdam Schiphol

6:00 am - 2:15 pmMAD Madrid Barajas-ORD Chicago O'Hare Intl

15h 15m1 stop Amsterdam Schiphol

$899KLM

Wed, Sep 9 - Fri, Sep 11

3:45 pm - 9:55 amORD Chicago O'Hare Intl-MAD Madrid Barajas

11h 10m1 stop Dublin

10:40 am - 7:15 pmMAD Madrid Barajas-ORD Chicago O'Hare Intl

15h 35m1 stop Dublin

$947Aer Lingus

Recent direct flight deals from Illinois to Madrid

Tue, Oct 6 - Fri, Oct 23

4:55 pm - 8:20 amORD Chicago O'Hare Intl-MAD Madrid Barajas

8h 25mnonstop

11:45 am - 2:25 pmMAD Madrid Barajas-ORD Chicago O'Hare Intl

9h 40mnonstop

$697Finnair

Wed, Nov 11 - Wed, Nov 18

6:05 pm - 9:25 amORD Chicago O'Hare Intl-MAD Madrid Barajas

8h 20mnonstop

12:40 pm - 3:05 pmMAD Madrid Barajas-ORD Chicago O'Hare Intl

9h 25mnonstop

$697Finnair

Mon, Oct 5 - Wed, Oct 14

10:20 pm - 1:30 pmORD Chicago O'Hare Intl-MAD Madrid Barajas

8h 10mnonstop

1:35 pm - 4:00 pmMAD Madrid Barajas-ORD Chicago O'Hare Intl

9h 25mnonstop

$697American Airlines

Sun, Nov 1 - Thu, Nov 12

5:40 pm - 8:50 amORD Chicago O'Hare Intl-MAD Madrid Barajas

8h 10mnonstop

12:40 pm - 3:05 pmMAD Madrid Barajas-ORD Chicago O'Hare Intl

9h 25mnonstop

$697American Airlines

Mon, Nov 30 - Wed, Dec 9

5:40 pm - 8:50 amORD Chicago O'Hare Intl-MAD Madrid Barajas

8h 10mnonstop

12:00 pm - 2:55 pmMAD Madrid Barajas-ORD Chicago O'Hare Intl

9h 55mnonstop

$697Iberia

Mon, Nov 30 - Tue, Dec 8

6:10 pm - 9:25 amORD Chicago O'Hare Intl-MAD Madrid Barajas

8h 15mnonstop

12:00 pm - 2:55 pmMAD Madrid Barajas-ORD Chicago O'Hare Intl

9h 55mnonstop

$697Iberia

Tue, Sep 22 - Thu, Oct 1

10:15 pm - 1:30 pmORD Chicago O'Hare Intl-MAD Madrid Barajas

8h 15mnonstop

1:35 pm - 4:00 pmMAD Madrid Barajas-ORD Chicago O'Hare Intl

9h 25mnonstop

$714British Airways

Wed, Oct 14 - Fri, Oct 16

10:20 pm - 1:30 pmORD Chicago O'Hare Intl-MAD Madrid Barajas

8h 10mnonstop

1:35 pm - 4:00 pmMAD Madrid Barajas-ORD Chicago O'Hare Intl

9h 25mnonstop

$714Multiple Airlines

Mon, Sep 21 - Fri, Sep 25

10:15 pm - 1:30 pmORD Chicago O'Hare Intl-MAD Madrid Barajas

8h 15mnonstop

1:35 pm - 4:00 pmMAD Madrid Barajas-ORD Chicago O'Hare Intl

9h 25mnonstop

$714Multiple Airlines

Sun, Nov 8 - Fri, Nov 13

6:05 pm - 9:25 amORD Chicago O'Hare Intl-MAD Madrid Barajas

8h 20mnonstop

12:00 pm - 2:55 pmMAD Madrid Barajas-ORD Chicago O'Hare Intl

9h 55mnonstop

$724British Airways

Useful Info

Low season	January
High season	March
Cheapest flight	$316

Best time to beat the crowds with an average 28% drop in price.

Most popular time to fly and prices are also 15% lower on average.

Flight from St. Louis to Madrid

How does KAYAK find such low prices on flights from Illinois to Madrid?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Madrid.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Madrid?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Madrid from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Illinois to Madrid?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Madrid with an airline and back to Illinois with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Madrid?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Madrid from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.