SJU

$114 Find Cheap Flights from Illinois to San Juan - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to San Juan departing on 10/7. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Flight Deals

Cheap Flights from Illinois to San Juan

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Illinois to San Juan that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Illinois to San Juan

Mon, Aug 17 - Sat, Aug 29
Frontier Logo
12:44 am - 6:44 am
ORD
-
SJU
5h 00mnonstop
Frontier Logo
7:14 pm - 11:27 pm
SJU
-
ORD
5h 13mnonstop
$226Frontier
Tue, Aug 18 - Wed, Aug 26
Frontier Logo
12:44 am - 6:44 am
ORD
-
SJU
5h 00mnonstop
Frontier Logo
7:14 pm - 11:27 pm
SJU
-
ORD
5h 13mnonstop
$228Frontier
Tue, Aug 25 - Sun, Aug 30
Frontier Logo
8:05 am - 4:11 pm
ORD
-
SJU
31h 06m
1 stop
Frontier Logo
7:14 pm - 11:27 pm
SJU
-
ORD
5h 13mnonstop
$229Frontier
Mon, Aug 31 - Mon, Aug 31
Southwest Logo
9:10 am - 4:55 pm
MDW
-
SJU
6h 45m
1 stop
Southwest Logo
8:55 pm - 9:25 am
SJU
-
MDW
13h 30m
1 stop
$251Southwest
Fri, Aug 21 - Thu, Aug 27
Southwest Logo
3:10 pm - 11:50 pm
MDW
-
SJU
7h 40m
2 stops
Southwest Logo
8:55 pm - 8:45 am
SJU
-
MDW
12h 50m
1 stop
$256Southwest
Mon, Oct 26 - Wed, Oct 28
United Airlines Logo
6:30 am - 2:40 pm
MLI
-
SJU
7h 10m
1 stop
United Airlines Logo
1:05 am - 1:58 pm
SJU
-
MLI
13h 53m
2 stops
$316United Airlines
Fri, Oct 9 - Thu, Oct 15
Delta Logo
11:04 am - 9:59 pm
MLI
-
SJU
9h 55m
1 stop
Delta Logo
2:31 pm - 10:34 pm
SJU
-
MLI
9h 03m
1 stop
$331Delta
Sat, Aug 22 - Sat, Aug 29
Multiple Airlines Logo
8:21 pm - 8:11 am
SPI
-
SJU
10h 50m
1 stop
Multiple Airlines Logo
12:11 pm - 7:41 pm
SJU
-
SPI
8h 30m
1 stop
$332Multiple Airlines
Mon, Oct 26 - Thu, Oct 29
United Airlines Logo
10:35 am - 8:00 pm
MLI
-
SJU
8h 25m
1 stop
United Airlines Logo
3:55 pm - 11:01 pm
SJU
-
MLI
8h 06m
1 stop
$389United Airlines
Sun, Jan 17 - Wed, Jan 27
Delta Logo
11:00 am - 11:50 pm
MLI
-
SJU
10h 50m
1 stop
Delta Logo
7:30 am - 4:22 pm
SJU
-
MLI
10h 52m
1 stop
$395Delta
Useful Info

Good to know

Low season

September

Cheapest flight

$114
Best time to beat the crowds with an average 10% drop in price.
Most popular time to fly with an average 17% increase in price.
Flight from St. Louis to San Juan

FAQs for booking Illinois to San Juan flights

  • How does KAYAK find such low prices on flights from Illinois to San Juan?

    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 San Juan.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Juan 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 San Juan?

    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 San Juan 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 San Juan?

    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 San Juan from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Traveling to a place near San Juan?

Book flights to San Juan if you plan to visit one of these locations
Rio Grande
Caguas

Everything you need to know for your flight to San Juan

Information on your arrival and departure airports

San Juan (SJU)