United Flight 4390 Deals & Information (2025/2026)

Wander Wisely with exceptional service, 24/7 supportOpens in a new window

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

United Flight 4390 Route Deals From $214

The cheapest prices found with in the last 7 days for return flights were $193 and $214 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Feb 18 - Tue, Feb 24
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$193 Roundtrip, found 5 days ago
$193
Roundtrip
found 5 days ago
Select United flight, departing Wed, Feb 18 from Chattanooga Metropolitan to O'Hare Intl., returning Tue, Feb 24, priced at $193 found 5 days ago
Thu, Oct 23 - Tue, Oct 28
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$194 Roundtrip, found 2 days ago
$194
Roundtrip
found 2 days ago
Select United flight, departing Thu, Oct 23 from Chattanooga Metropolitan to O'Hare Intl., returning Tue, Oct 28, priced at $194 found 2 days ago
Tue, Aug 5 - Sat, Aug 9
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$196 Roundtrip, found 16 hours ago
$196
Roundtrip
found 16 hours ago
Select United flight, departing Tue, Aug 5 from Chattanooga Metropolitan to O'Hare Intl., returning Sat, Aug 9, priced at $196 found 16 hours ago
Thu, Oct 23 - Tue, Oct 28
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$199 Roundtrip, found 2 days ago
$199
Roundtrip
found 2 days ago
Select United flight, departing Thu, Oct 23 from Chattanooga Metropolitan to O'Hare Intl., returning Tue, Oct 28, priced at $199 found 2 days ago
Fri, Aug 22 - Sun, Aug 24
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$201 Roundtrip, found 2 days ago
$201
Roundtrip
found 2 days ago
Select United flight, departing Fri, Aug 22 from Chattanooga Metropolitan to O'Hare Intl., returning Sun, Aug 24, priced at $201 found 2 days ago
Sat, Aug 16 - Sun, Aug 24
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$202 Roundtrip, found 3 days ago
$202
Roundtrip
found 3 days ago
Select United flight, departing Sat, Aug 16 from Chattanooga Metropolitan to O'Hare Intl., returning Sun, Aug 24, priced at $202 found 3 days ago
Sat, Oct 11 - Tue, Oct 14
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$212 Roundtrip, found 23 hours ago
$212
Roundtrip
found 23 hours ago
Select United flight, departing Sat, Oct 11 from Chattanooga Metropolitan to O'Hare Intl., returning Tue, Oct 14, priced at $212 found 23 hours ago
Wed, Feb 18 - Tue, Feb 24
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$214 Roundtrip, found 5 days ago
$214
Roundtrip
found 5 days ago
Select United flight, departing Wed, Feb 18 from Chattanooga Metropolitan to O'Hare Intl., returning Tue, Feb 24, priced at $214 found 5 days ago
Wed, Feb 18 - Tue, Feb 24
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$217 Roundtrip, found 5 days ago
$217
Roundtrip
found 5 days ago
Select United flight, departing Wed, Feb 18 from Chattanooga Metropolitan to O'Hare Intl., returning Tue, Feb 24, priced at $217 found 5 days ago
Sat, Jul 26 - Tue, Jul 29
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$223 Roundtrip, found 5 days ago
$223
Roundtrip
found 5 days ago
Select United flight, departing Sat, Jul 26 from Chattanooga Metropolitan to O'Hare Intl., returning Tue, Jul 29, priced at $223 found 5 days ago
Thu, Dec 11 - Sun, Dec 14
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$226 Roundtrip, found 4 days ago
$226
Roundtrip
found 4 days ago
Select United flight, departing Thu, Dec 11 from Chattanooga Metropolitan to O'Hare Intl., returning Sun, Dec 14, priced at $226 found 4 days ago
Fri, Aug 22 - Sun, Aug 24
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$227 Roundtrip, found 2 days ago
$227
Roundtrip
found 2 days ago
Select United flight, departing Fri, Aug 22 from Chattanooga Metropolitan to O'Hare Intl., returning Sun, Aug 24, priced at $227 found 2 days ago
Thu, Dec 11 - Sun, Dec 14
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$231 Roundtrip, found 4 days ago
$231
Roundtrip
found 4 days ago
Select United flight, departing Thu, Dec 11 from Chattanooga Metropolitan to O'Hare Intl., returning Sun, Dec 14, priced at $231 found 4 days ago
Sat, Oct 11 - Tue, Oct 14
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$234 Roundtrip, found 23 hours ago
$234
Roundtrip
found 23 hours ago
Select United flight, departing Sat, Oct 11 from Chattanooga Metropolitan to O'Hare Intl., returning Tue, Oct 14, priced at $234 found 23 hours ago
Sat, Aug 16 - Sun, Aug 24
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$234 Roundtrip, found 3 days ago
$234
Roundtrip
found 3 days ago
Select United flight, departing Sat, Aug 16 from Chattanooga Metropolitan to O'Hare Intl., returning Sun, Aug 24, priced at $234 found 3 days ago
Sat, Jul 26 - Wed, Jul 30
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$237 Roundtrip, found 2 days ago
$237
Roundtrip
found 2 days ago
Select United flight, departing Sat, Jul 26 from Chattanooga Metropolitan to O'Hare Intl., returning Wed, Jul 30, priced at $237 found 2 days ago
Fri, Aug 22 - Sun, Aug 24
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$251 Roundtrip, found 2 days ago
$251
Roundtrip
found 2 days ago
Select United flight, departing Fri, Aug 22 from Chattanooga Metropolitan to O'Hare Intl., returning Sun, Aug 24, priced at $251 found 2 days ago

Frequently asked questions

What route does flight number UA4390 take?
UA4390 is used on a number of routes. Typically, UA4390 flies directly from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to O'Hare Intl. Airport (ORD). If this is your route, you'll be up above the clouds for about 2 hours and 2 minutes.
What kind of plane is on flight number UA4390?
It's likely you'll be setting off on a Canadair (Bombardier) Regional Jet 550 if you've booked a fare from BWI to Chicago, IL Airport (ORD-O'Hare Intl.), a common route for flight UA4390.
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 UA4390 flight with Travelocity, please visit our Customer Service Portal.