United Flight UA4639 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 $192 and $214 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Oct 17 - Mon, Oct 20
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$192 Roundtrip, found 1 day ago
$192
Roundtrip
found 1 day ago
Select United flight, departing Fri, Oct 17 from Chattanooga Metropolitan to O'Hare Intl., returning Mon, Oct 20, priced at $192 found 1 day ago
Wed, Oct 8 - Mon, Oct 13
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$202 Roundtrip, found 1 day ago
$202
Roundtrip
found 1 day ago
Select United flight, departing Wed, Oct 8 from Chattanooga Metropolitan to O'Hare Intl., returning Mon, Oct 13, priced at $202 found 1 day ago
Fri, Oct 17 - Mon, Oct 20
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$212 Roundtrip, found 1 day ago
$212
Roundtrip
found 1 day ago
Select United flight, departing Fri, Oct 17 from Chattanooga Metropolitan to O'Hare Intl., returning Mon, Oct 20, priced at $212 found 1 day ago
Sat, Oct 4 - Wed, Oct 15
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$222 Roundtrip, found 2 days ago
$222
Roundtrip
found 2 days ago
Select United flight, departing Sat, Oct 4 from Chattanooga Metropolitan to O'Hare Intl., returning Wed, Oct 15, priced at $222 found 2 days ago
Sun, Oct 19 - Sun, Oct 26
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$222 Roundtrip, found 2 days ago
$222
Roundtrip
found 2 days ago
Select United flight, departing Sun, Oct 19 from Chattanooga Metropolitan to O'Hare Intl., returning Sun, Oct 26, priced at $222 found 2 days ago
Thu, Oct 2 - Wed, Oct 8
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$227 Roundtrip, found 1 day ago
$227
Roundtrip
found 1 day ago
Select United flight, departing Thu, Oct 2 from Chattanooga Metropolitan to O'Hare Intl., returning Wed, Oct 8, priced at $227 found 1 day ago
Sun, Oct 19 - Sun, Oct 26
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$233 Roundtrip, found 2 days ago
$233
Roundtrip
found 2 days ago
Select United flight, departing Sun, Oct 19 from Chattanooga Metropolitan to O'Hare Intl., returning Sun, Oct 26, priced at $233 found 2 days ago
Sun, Oct 19 - Sun, Oct 26
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$243 Roundtrip, found 2 days ago
$243
Roundtrip
found 2 days ago
Select United flight, departing Sun, Oct 19 from Chattanooga Metropolitan to O'Hare Intl., returning Sun, Oct 26, priced at $243 found 2 days ago
Sat, Nov 22 - Sat, Nov 29
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$244 Roundtrip, found 2 days ago
$244
Roundtrip
found 2 days ago
Select United flight, departing Sat, Nov 22 from Chattanooga Metropolitan to O'Hare Intl., returning Sat, Nov 29, priced at $244 found 2 days ago
Sat, Oct 18 - Wed, Oct 22
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$245 Roundtrip, found 1 day ago
$245
Roundtrip
found 1 day ago
Select United flight, departing Sat, Oct 18 from Chattanooga Metropolitan to O'Hare Intl., returning Wed, Oct 22, priced at $245 found 1 day ago
Sat, Oct 18 - Wed, Oct 22
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$256 Roundtrip, found 1 day ago
$256
Roundtrip
found 1 day ago
Select United flight, departing Sat, Oct 18 from Chattanooga Metropolitan to O'Hare Intl., returning Wed, Oct 22, priced at $256 found 1 day ago
Fri, Oct 24 - Mon, Oct 27
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$262 Roundtrip, found 4 days ago
$262
Roundtrip
found 4 days ago
Select United flight, departing Fri, Oct 24 from Chattanooga Metropolitan to O'Hare Intl., returning Mon, Oct 27, priced at $262 found 4 days ago
Wed, Oct 8 - Mon, Oct 13
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$262 Roundtrip, found 1 day ago
$262
Roundtrip
found 1 day ago
Select United flight, departing Wed, Oct 8 from Chattanooga Metropolitan to O'Hare Intl., returning Mon, Oct 13, priced at $262 found 1 day ago
Sat, Nov 22 - Sat, Nov 29
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$264 Roundtrip, found 2 days ago
$264
Roundtrip
found 2 days ago
Select United flight, departing Sat, Nov 22 from Chattanooga Metropolitan to O'Hare Intl., returning Sat, Nov 29, priced at $264 found 2 days ago
Sat, Nov 22 - Sat, Nov 29
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$268 Roundtrip, found 2 days ago
$268
Roundtrip
found 2 days ago
Select United flight, departing Sat, Nov 22 from Chattanooga Metropolitan to O'Hare Intl., returning Sat, Nov 29, priced at $268 found 2 days ago
Sun, Oct 19 - Sun, Oct 26
CHA
Chattanooga Metropolitan
ORD
O'Hare Intl.
$270 Roundtrip, found 2 days ago
$270
Roundtrip
found 2 days ago
Select United flight, departing Sun, Oct 19 from Chattanooga Metropolitan to O'Hare Intl., returning Sun, Oct 26, priced at $270 found 2 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.