United Flight 3539 Deals & Information (2025/2026)

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United Flight 3539 Route Deals From $213

The cheapest prices found with in the last 7 days for return flights were $551 and $213 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Jun 30 - Tue, Jul 1
YQB
Jean Lesage Intl.
ORD
O'Hare Intl.
$551 Roundtrip, found 5 days ago
$551
Roundtrip
found 5 days ago
Select United flight, departing Mon, Jun 30 from Jean Lesage Intl. to O'Hare Intl., returning Tue, Jul 1, priced at $551 found 5 days ago
Mon, Jun 30 - Tue, Jul 1
YQB
Jean Lesage Intl.
ORD
O'Hare Intl.
$557 Roundtrip, found 5 days ago
$557
Roundtrip
found 5 days ago
Select United flight, departing Mon, Jun 30 from Jean Lesage Intl. to O'Hare Intl., returning Tue, Jul 1, priced at $557 found 5 days ago

Frequently asked questions

What route does flight number UA3539 take?
UA3539 is used on a number of routes. Typically, UA3539 flies directly from San Antonio Airport to O'Hare Airport. If you've booked a seat on this route, you'll be flying for 2 hours and 56 minutes.
What terminal does UA3539 fly out of?
If you're flying out of SAT, you'll most likely board from Terminal B. The most popular route for UA3539 is San Antonio Airport to ORD, which is a nonstop flight.
What kind of plane is on flight number UA3539?
There's a good chance you'll be on the Embraer 170 if you've booked a fare from San Antonio Intl. Airport (SAT) to O'Hare Airport, a popular route for flight number UA3539.
If I am not able to travel due to COVID-19, can I change my flight to a later date?
For more info about changing your UA3539 flight with Travelocity, please visit our Customer Service Portal.