United Flight 5478 Deals & Information (2025/2026)

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United Flight 5478 Route Deals From $224

The cheapest prices found with in the last 7 days for return flights were $209 and $224 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Oct 29 - Sun, Nov 2
MDT
Harrisburg Intl.
ORD
O'Hare Intl.
$209 Roundtrip, found 9 hours ago
$209
Roundtrip
found 9 hours ago
Select United flight, departing Wed, Oct 29 from Harrisburg Intl. to O'Hare Intl., returning Sun, Nov 2, priced at $209 found 9 hours ago
Sat, Jul 26 - Wed, Jul 30
MDT
Harrisburg Intl.
ORD
O'Hare Intl.
$213 Roundtrip, found 2 days ago
$213
Roundtrip
found 2 days ago
Select United flight, departing Sat, Jul 26 from Harrisburg Intl. to O'Hare Intl., returning Wed, Jul 30, priced at $213 found 2 days ago
Wed, Oct 15 - Sun, Oct 19
MDT
Harrisburg Intl.
ORD
O'Hare Intl.
$233 Roundtrip, found 2 days ago
$233
Roundtrip
found 2 days ago
Select United flight, departing Wed, Oct 15 from Harrisburg Intl. to O'Hare Intl., returning Sun, Oct 19, priced at $233 found 2 days ago
Fri, Jul 18 - Sat, Jul 19
MDT
Harrisburg Intl.
ORD
O'Hare Intl.
$238 Roundtrip, found 5 days ago
$238
Roundtrip
found 5 days ago
Select United flight, departing Fri, Jul 18 from Harrisburg Intl. to O'Hare Intl., returning Sat, Jul 19, priced at $238 found 5 days ago
Wed, Apr 1 - Fri, May 1
MDT
Harrisburg Intl.
ORD
O'Hare Intl.
$249 Roundtrip, found 21 hours ago
$249
Roundtrip
found 21 hours ago
Select United flight, departing Wed, Apr 1 from Harrisburg Intl. to O'Hare Intl., returning Fri, May 1, priced at $249 found 21 hours ago
Fri, Aug 1 - Sun, Aug 3
MDT
Harrisburg Intl.
ORD
O'Hare Intl.
$254 Roundtrip, found 2 days ago
$254
Roundtrip
found 2 days ago
Select United flight, departing Fri, Aug 1 from Harrisburg Intl. to O'Hare Intl., returning Sun, Aug 3, priced at $254 found 2 days ago
Wed, Oct 29 - Sun, Nov 2
MDT
Harrisburg Intl.
ORD
O'Hare Intl.
$255 Roundtrip, found 9 hours ago
$255
Roundtrip
found 9 hours ago
Select United flight, departing Wed, Oct 29 from Harrisburg Intl. to O'Hare Intl., returning Sun, Nov 2, priced at $255 found 9 hours ago
Wed, Oct 15 - Sat, Oct 18
MDT
Harrisburg Intl.
ORD
O'Hare Intl.
$263 Roundtrip, found 2 days ago
$263
Roundtrip
found 2 days ago
Select United flight, departing Wed, Oct 15 from Harrisburg Intl. to O'Hare Intl., returning Sat, Oct 18, priced at $263 found 2 days ago
Wed, Oct 15 - Sun, Oct 19
MDT
Harrisburg Intl.
ORD
O'Hare Intl.
$268 Roundtrip, found 2 days ago
$268
Roundtrip
found 2 days ago
Select United flight, departing Wed, Oct 15 from Harrisburg Intl. to O'Hare Intl., returning Sun, Oct 19, priced at $268 found 2 days ago
Thu, Jul 17 - Sat, Jul 19
MDT
Harrisburg Intl.
ORD
O'Hare Intl.
$271 Roundtrip, found 2 days ago
$271
Roundtrip
found 2 days ago
Select United flight, departing Thu, Jul 17 from Harrisburg Intl. to O'Hare Intl., returning Sat, Jul 19, priced at $271 found 2 days ago

Frequently asked questions

What route does flight number UA5478 take?
UA5478 flies direct from Lambert-St. Louis Intl. Airport (STL) to DEN in around 2 hours and 17 minutes. It can sometimes take other routes though, some of which could be multi-stop trips. Keep this in mind when locking in your airfare to avoid any confusion.
What terminal does UA5478 fly out of?
If you're leaving from St. Louis, MO Airport (STL-Lambert-St. Louis Intl.), there's a fair chance you'll board from Terminal 1. The most traveled route for flight number UA5478 is STL to DEN, which is a direct flight.
What kind of plane is on flight number UA5478?
It's highly likely you'll be traveling aboard an Embraer 175 if you've booked a fare on flight number UA5478 from St. Louis, MO Airport (STL-Lambert-St. Louis Intl.) to Denver, CO Airport (DEN-Denver Intl.). This is the most commonly used type of plane 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 UA5478 flight with Travelocity, please visit our Customer Service Portal.