United Flight AA4645 Deals & Information (2025/2026)

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United Flight 4645 Route Deals From $204

The cheapest prices found with in the last 7 days for return flights were $182 and $204 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Nov 8 - Sat, Nov 15
ATW
Appleton Intl.
ORD
O'Hare Intl.
$182 Roundtrip, found 1 day ago
$182
Roundtrip
found 1 day ago
Select United flight, departing Sat, Nov 8 from Appleton Intl. to O'Hare Intl., returning Sat, Nov 15, priced at $182 found 1 day ago
Fri, Oct 10 - Mon, Oct 13
ATW
Appleton Intl.
ORD
O'Hare Intl.
$192 Roundtrip, found 5 days ago
$192
Roundtrip
found 5 days ago
Select United flight, departing Fri, Oct 10 from Appleton Intl. to O'Hare Intl., returning Mon, Oct 13, priced at $192 found 5 days ago
Fri, Oct 10 - Mon, Oct 13
ATW
Appleton Intl.
ORD
O'Hare Intl.
$232 Roundtrip, found 5 days ago
$232
Roundtrip
found 5 days ago
Select United flight, departing Fri, Oct 10 from Appleton Intl. to O'Hare Intl., returning Mon, Oct 13, priced at $232 found 5 days ago
Sat, Nov 8 - Sat, Nov 15
ATW
Appleton Intl.
ORD
O'Hare Intl.
$248 Roundtrip, found 1 day ago
$248
Roundtrip
found 1 day ago
Select United flight, departing Sat, Nov 8 from Appleton Intl. to O'Hare Intl., returning Sat, Nov 15, priced at $248 found 1 day ago
Thu, Oct 9 - Thu, Oct 23
ATW
Appleton Intl.
ORD
O'Hare Intl.
$251 Roundtrip, found 6 days ago
$251
Roundtrip
found 6 days ago
Select United flight, departing Thu, Oct 9 from Appleton Intl. to O'Hare Intl., returning Thu, Oct 23, priced at $251 found 6 days ago
Fri, Oct 10 - Mon, Oct 13
ATW
Appleton Intl.
ORD
O'Hare Intl.
$262 Roundtrip, found 5 days ago
$262
Roundtrip
found 5 days ago
Select United flight, departing Fri, Oct 10 from Appleton Intl. to O'Hare Intl., returning Mon, Oct 13, priced at $262 found 5 days ago
Fri, Dec 12 - Mon, Dec 15
ATW
Appleton Intl.
ORD
O'Hare Intl.
$265 Roundtrip, found 20 hours ago
$265
Roundtrip
found 20 hours ago
Select United flight, departing Fri, Dec 12 from Appleton Intl. to O'Hare Intl., returning Mon, Dec 15, priced at $265 found 20 hours ago
Fri, Dec 12 - Mon, Dec 15
ATW
Appleton Intl.
ORD
O'Hare Intl.
$267 Roundtrip, found 20 hours ago
$267
Roundtrip
found 20 hours ago
Select United flight, departing Fri, Dec 12 from Appleton Intl. to O'Hare Intl., returning Mon, Dec 15, priced at $267 found 20 hours ago
Sat, Nov 8 - Sat, Nov 15
ATW
Appleton Intl.
ORD
O'Hare Intl.
$269 Roundtrip, found 1 day ago
$269
Roundtrip
found 1 day ago
Select United flight, departing Sat, Nov 8 from Appleton Intl. to O'Hare Intl., returning Sat, Nov 15, priced at $269 found 1 day ago

Frequently asked questions

What route does flight number UA4645 take?
UA4645 takes several routes. The most frequently flown is Chicago, IL Airport (ORD-O'Hare Intl.) to South Bend Airport, which is a direct flight. This flight takes roughly 44 minutes. However, there are likely to be other flights with this number that are multi-stop.
What terminal does UA4645 fly out of?
If you're departing from ORD, you'll probably board the aircraft from Terminal 2. The most popular route for UA4645 is O'Hare Intl. Airport (ORD) to South Bend Airport, which is a nonstop flight.
What kind of plane is on flight number UA4645?
You'll probably be climbing aboard the Bombardier CRJ if you've booked a ticket on flight UA4645 from Chicago, IL Airport (ORD-O'Hare Intl.) to South Bend, IN Airport (SBN-South Bend Intl.). This is the most commonly used aircraft on this popular route.
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 UA4645 flight with Travelocity, please visit our Customer Service Portal.