SJU

$69 Find Cheap Flights from Illinois to San Juan

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 1/8. 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

KAYAK searches hundreds of travel sites at once for deals on flights to San Juan Luis Munoz Marin Intl Airport

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Everything you should know

Cheapest round-trip
$138
Typical prices: $304-$614
Frontier
Fri 2/20Thu 2/26
STL - SJU • 1 stop
Cheapest non-stop
$215
Typical prices: $309-$664
Spirit Airlines
Fri 11/28Sat 12/6
ORD - SJU • Non-stop
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We hope you love your trip to San Juan!
Flight Deals
Useful Info
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

Fri, Feb 20 - Thu, Feb 26
Frontier Logo
5:11 pm - 2:50 amSTL-SJU
7h 39m1 stop
Frontier Logo
9:37 pm - 7:50 amSJU-STL
12h 13m1 stop
$138Frontier
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Mon, Jan 26 - Sat, Jan 31
Frontier Logo
10:16 am - 3:26 pmSTL-SJU
27h 10m1 stop
Frontier Logo
4:36 pm - 11:33 pmSJU-STL
8h 57m1 stop
$153Frontier
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Fri, Feb 6 - Sat, Feb 14
Frontier Logo
11:18 am - 3:26 pmSTL-SJU
26h 08m1 stop
Frontier Logo
7:00 am - 7:50 amSJU-STL
26h 50m1 stop
$168Frontier
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Fri, Feb 20 - Fri, Feb 27
Multiple Airlines Logo
12:22 pm - 6:54 pmORD-SJU
4h 32mnonstop
Multiple Airlines Logo
4:11 pm - 11:35 pmSJU-ORD
9h 24m1 stop
$211Multiple Airlines
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Fri, Dec 5 - Sun, Dec 14
Multiple Airlines Logo
2:00 pm - 12:49 amORD-SJU
8h 49m1 stop
Multiple Airlines Logo
8:45 pm - 11:59 pmSJU-ORD
5h 14mnonstop
$212Multiple Airlines
Find Deal
Sat, Jan 24 - Mon, Feb 9
Spirit Airlines Logo
12:22 pm - 6:54 pmORD-SJU
4h 32mnonstop
Spirit Airlines Logo
1:22 pm - 4:37 pmSJU-ORD
5h 15mnonstop
$217Spirit Airlines
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Mon, Jan 12 - Fri, Jan 16
Spirit Airlines Logo
12:22 pm - 6:54 pmORD-SJU
4h 32mnonstop
Spirit Airlines Logo
1:22 pm - 4:37 pmSJU-ORD
5h 15mnonstop
$218Spirit Airlines
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Sun, Jan 18 - Fri, Jan 23
Southwest Logo
8:25 am - 5:05 pmMDW-SJU
6h 40m1 stop
Southwest Logo
9:05 am - 6:35 pmSJU-MDW
11h 30m1 stop
$225Southwest
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Tue, Jan 20 - Tue, Jan 27
United Airlines Logo
9:57 am - 12:36 amSTL-SJU
12h 39m2 stops
United Airlines Logo
3:46 pm - 10:00 pmSJU-STL
8h 14m1 stop
$225United Airlines
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Sun, Feb 1 - Wed, Feb 4
United Airlines Logo
5:29 pm - 6:11 amMLI-SJU
10h 42m2 stops
United Airlines Logo
7:45 am - 4:54 pmSJU-MLI
11h 09m2 stops
$325United Airlines
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Useful Info

Good to know

Low seasonSeptember
Cheapest flight$69
Best time to beat the crowds with an average 2% drop in price.
Most popular time to fly with an average 27% 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)