United Flight 4510 Deals & Information (2026/2027)

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United Flight 4510 Route Deals From $138

The cheapest prices found with in the last 7 days for return flights were $276 and $138 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, May 16 - Wed, May 20
SDF
Louisville Intl.
ORD
O'Hare Intl.
$276 Roundtrip, found 6 hours ago
$276
Roundtrip
found 6 hours ago
Select United flight, departing Sat, May 16 from Louisville Intl. to O'Hare Intl., returning Wed, May 20, priced at $276 found 6 hours ago
Thu, Apr 16 - Sat, Apr 18
SDF
Louisville Intl.
ORD
O'Hare Intl.
$293 Roundtrip, found 1 day ago
$293
Roundtrip
found 1 day ago
Select United flight, departing Thu, Apr 16 from Louisville Intl. to O'Hare Intl., returning Sat, Apr 18, priced at $293 found 1 day ago
Sat, May 16 - Wed, May 20
SDF
Louisville Intl.
ORD
O'Hare Intl.
$296 Roundtrip, found 6 hours ago
$296
Roundtrip
found 6 hours ago
Select United flight, departing Sat, May 16 from Louisville Intl. to O'Hare Intl., returning Wed, May 20, priced at $296 found 6 hours ago
Sat, May 16 - Wed, May 20
SDF
Louisville Intl.
ORD
O'Hare Intl.
$299 Roundtrip, found 6 hours ago
$299
Roundtrip
found 6 hours ago
Select United flight, departing Sat, May 16 from Louisville Intl. to O'Hare Intl., returning Wed, May 20, priced at $299 found 6 hours ago
Wed, Apr 22 - Thu, Apr 23
SDF
Louisville Intl.
ORD
O'Hare Intl.
$301 Roundtrip, found 5 days ago
$301
Roundtrip
found 5 days ago
Select United flight, departing Wed, Apr 22 from Louisville Intl. to O'Hare Intl., returning Thu, Apr 23, priced at $301 found 5 days ago
Thu, Jun 4 - Sat, Jun 20
SDF
Louisville Intl.
ORD
O'Hare Intl.
$303 Roundtrip, found 6 days ago
$303
Roundtrip
found 6 days ago
Select United flight, departing Thu, Jun 4 from Louisville Intl. to O'Hare Intl., returning Sat, Jun 20, priced at $303 found 6 days ago
Wed, Apr 22 - Thu, Apr 23
SDF
Louisville Intl.
ORD
O'Hare Intl.
$314 Roundtrip, found 5 days ago
$314
Roundtrip
found 5 days ago
Select United flight, departing Wed, Apr 22 from Louisville Intl. to O'Hare Intl., returning Thu, Apr 23, priced at $314 found 5 days ago
Wed, May 6 - Thu, May 7
SDF
Louisville Intl.
ORD
O'Hare Intl.
$320 Roundtrip, found 4 days ago
$320
Roundtrip
found 4 days ago
Select United flight, departing Wed, May 6 from Louisville Intl. to O'Hare Intl., returning Thu, May 7, priced at $320 found 4 days ago

Frequently asked questions

What route does flight number UA4510 take?
UA4510 flies direct from Toronto, ON Airport (YYZ-Pearson Intl.) to O'Hare Intl. Airport (ORD) in around 1 hour and 49 minutes. It can take other routes though, some of which may be multi-stop journeys. Keep this in mind when booking your airfare to avoid any confusion.
What terminal does UA4510 fly out of?
Terminal 1 is where you'll likely take off from if you're booked on a flight leaving from YYZ. YYZ to O'Hare Intl. Airport (ORD) is the most popular route for flight number UA4510.
What kind of plane is on flight number UA4510?
UA4510 is a flight number that is used on multiple routes. If you've booked a ticket on its most popular one, Toronton Pearson to O'Hare Airport, you're likely to be hopping on board a Canadair (Bombardier) Regional Jet 550.
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 UA4510 flight with Travelocity, please visit our Customer Service Portal.