United Flight 3542 Deals & Information (2025/2026)

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United Flight 3542 Route Deals From $172

The cheapest prices found with in the last 7 days for return flights were $289 and $172 for one-way flights to Pierre Elliott Trudeau Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Jan 6 - Tue, Jan 20
ORD
O'Hare Intl.
YUL
Pierre Elliott Trudeau Intl.
$289 Roundtrip, just found
$289
Roundtrip
just found
Select United flight, departing Tue, Jan 6 from O'Hare Intl. to Pierre Elliott Trudeau Intl., returning Tue, Jan 20, priced at $289 just found
Tue, Jan 6 - Tue, Jan 20
ORD
O'Hare Intl.
YUL
Pierre Elliott Trudeau Intl.
$307 Roundtrip, just found
$307
Roundtrip
just found
Select United flight, departing Tue, Jan 6 from O'Hare Intl. to Pierre Elliott Trudeau Intl., returning Tue, Jan 20, priced at $307 just found
Tue, Jan 6 - Tue, Jan 20
ORD
O'Hare Intl.
YUL
Pierre Elliott Trudeau Intl.
$396 Roundtrip, just found
$396
Roundtrip
just found
Select United flight, departing Tue, Jan 6 from O'Hare Intl. to Pierre Elliott Trudeau Intl., returning Tue, Jan 20, priced at $396 just found

Frequently asked questions

What route does flight number UA3542 take?
UA3542 is used on a number of routes. Mostly, UA3542 flies directly from O'Hare Airport to Hilton Head Island Airport (HHH). If you've booked a seat on this route, you'll be traveling for roughly 2 hours and 29 minutes.
What terminal does UA3542 fly out of?
You'll likely board from Terminal 2 if you're booked on a flight out of O'Hare Airport. UA3542 serves a number of different routes, but the direct flight between ORD and Hilton Head Island Airport (HHH) is the most frequently traveled.
What kind of plane is on flight number UA3542?
If you have a seat on flight UA3542 from ORD to HHH, there's an excellent chance you'll be traveling aboard the Embraer 175. Flight UA3542 serves several routes, but this is the busiest.
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 UA3542 flight with Travelocity, please visit our Customer Service Portal.