United Flight 4639 Deals & Information (2025/2026)

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United Flight 4639 Route Deals From $214

The cheapest prices found with in the last 7 days for return flights were $189 and $214 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Nov 4 - Wed, Nov 12
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$189 Roundtrip, found 18 hours ago
$189
Roundtrip
found 18 hours ago
Select United flight, departing Tue, Nov 4 from Chattanooga Metropolitan to O'Hare Intl., returning Wed, Nov 12, priced at $189 found 18 hours ago
Fri, Oct 17 - Mon, Oct 20
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$192 Roundtrip, found 4 days ago
$192
Roundtrip
found 4 days ago
Select United flight, departing Fri, Oct 17 from Chattanooga Metropolitan to O'Hare Intl., returning Mon, Oct 20, priced at $192 found 4 days ago
Tue, Nov 4 - Wed, Nov 12
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$194 Roundtrip, found 18 hours ago
$194
Roundtrip
found 18 hours ago
Select United flight, departing Tue, Nov 4 from Chattanooga Metropolitan to O'Hare Intl., returning Wed, Nov 12, priced at $194 found 18 hours ago
Fri, Oct 10 - Fri, Oct 17
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$197 Roundtrip, found 1 day ago
$197
Roundtrip
found 1 day ago
Select United flight, departing Fri, Oct 10 from Chattanooga Metropolitan to O'Hare Intl., returning Fri, Oct 17, priced at $197 found 1 day ago
Wed, Oct 8 - Mon, Oct 13
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$202 Roundtrip, found 4 days ago
$202
Roundtrip
found 4 days ago
Select United flight, departing Wed, Oct 8 from Chattanooga Metropolitan to O'Hare Intl., returning Mon, Oct 13, priced at $202 found 4 days ago
Tue, Nov 4 - Wed, Nov 12
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$210 Roundtrip, found 18 hours ago
$210
Roundtrip
found 18 hours ago
Select United flight, departing Tue, Nov 4 from Chattanooga Metropolitan to O'Hare Intl., returning Wed, Nov 12, priced at $210 found 18 hours ago
Fri, Oct 10 - Fri, Oct 17
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$210 Roundtrip, found 1 day ago
$210
Roundtrip
found 1 day ago
Select United flight, departing Fri, Oct 10 from Chattanooga Metropolitan to O'Hare Intl., returning Fri, Oct 17, priced at $210 found 1 day ago
Fri, Oct 17 - Mon, Oct 20
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$212 Roundtrip, found 4 days ago
$212
Roundtrip
found 4 days ago
Select United flight, departing Fri, Oct 17 from Chattanooga Metropolitan to O'Hare Intl., returning Mon, Oct 20, priced at $212 found 4 days ago
Tue, Nov 4 - Wed, Nov 12
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$215 Roundtrip, found 18 hours ago
$215
Roundtrip
found 18 hours ago
Select United flight, departing Tue, Nov 4 from Chattanooga Metropolitan to O'Hare Intl., returning Wed, Nov 12, priced at $215 found 18 hours ago
Tue, Nov 4 - Wed, Nov 12
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$219 Roundtrip, found 18 hours ago
$219
Roundtrip
found 18 hours ago
Select United flight, departing Tue, Nov 4 from Chattanooga Metropolitan to O'Hare Intl., returning Wed, Nov 12, priced at $219 found 18 hours ago
Sat, Oct 4 - Wed, Oct 15
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$222 Roundtrip, found 5 days ago
$222
Roundtrip
found 5 days ago
Select United flight, departing Sat, Oct 4 from Chattanooga Metropolitan to O'Hare Intl., returning Wed, Oct 15, priced at $222 found 5 days ago
Sun, Oct 19 - Sun, Oct 26
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$222 Roundtrip, found 6 days ago
$222
Roundtrip
found 6 days ago
Select United flight, departing Sun, Oct 19 from Chattanooga Metropolitan to O'Hare Intl., returning Sun, Oct 26, priced at $222 found 6 days ago
Tue, Nov 4 - Wed, Nov 12
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$224 Roundtrip, found 18 hours ago
$224
Roundtrip
found 18 hours ago
Select United flight, departing Tue, Nov 4 from Chattanooga Metropolitan to O'Hare Intl., returning Wed, Nov 12, priced at $224 found 18 hours ago
Thu, Oct 2 - Wed, Oct 8
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$227 Roundtrip, found 4 days ago
$227
Roundtrip
found 4 days ago
Select United flight, departing Thu, Oct 2 from Chattanooga Metropolitan to O'Hare Intl., returning Wed, Oct 8, priced at $227 found 4 days ago
Fri, Oct 10 - Mon, Oct 13
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$228 Roundtrip, found 14 hours ago
$228
Roundtrip
found 14 hours ago
Select United flight, departing Fri, Oct 10 from Chattanooga Metropolitan to O'Hare Intl., returning Mon, Oct 13, priced at $228 found 14 hours ago
Sun, Oct 19 - Sun, Oct 26
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$233 Roundtrip, found 6 days ago
$233
Roundtrip
found 6 days ago
Select United flight, departing Sun, Oct 19 from Chattanooga Metropolitan to O'Hare Intl., returning Sun, Oct 26, priced at $233 found 6 days ago

Frequently asked questions

What route does flight number UA4639 take?
UA4639 is used on a range of routes. Typically, UA4639 flies directly from Rick Husband Amarillo Intl. Airport (AMA) to Houston Airport. If you've booked a seat on this route, you'll be airborne for 1 hour and 46 minutes.
What kind of plane is on flight number UA4639?
There's a strong chance you'll be on a Bombardier CRJ if you're going from Rick Husband Amarillo Intl. Airport (AMA) to IAH, a popular route for flight number UA4639.
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 UA4639 flight with Travelocity, please visit our Customer Service Portal.