United Flight 3993 Deals & Information (2026/2027)

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United Flight 3993 Route Deals From $80

The cheapest prices found with in the last 7 days for return flights were $197 and $80 for one-way flights to George Bush Intercontinental for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Dec 12 - Sun, Dec 13
AUS
Austin-Bergstrom Intl.
IAH
George Bush Intercontinental
$197 Roundtrip, found 4 days ago
$197
Roundtrip
found 4 days ago
Select United flight, departing Sat, Dec 12 from Austin-Bergstrom Intl. to George Bush Intercontinental, returning Sun, Dec 13, priced at $197 found 4 days ago
Fri, Oct 30 - Sun, Nov 1
AUS
Austin-Bergstrom Intl.
IAH
George Bush Intercontinental
$224 Roundtrip, found 3 days ago
$224
Roundtrip
found 3 days ago
Select United flight, departing Fri, Oct 30 from Austin-Bergstrom Intl. to George Bush Intercontinental, returning Sun, Nov 1, priced at $224 found 3 days ago
Tue, Nov 3 - Wed, Nov 11
AUS
Austin-Bergstrom Intl.
IAH
George Bush Intercontinental
$237 Roundtrip, found 21 hours ago
$237
Roundtrip
found 21 hours ago
Select United flight, departing Tue, Nov 3 from Austin-Bergstrom Intl. to George Bush Intercontinental, returning Wed, Nov 11, priced at $237 found 21 hours ago
Fri, Oct 16 - Mon, Oct 19
AUS
Austin-Bergstrom Intl.
IAH
George Bush Intercontinental
$241 Roundtrip, found 8 hours ago
$241
Roundtrip
found 8 hours ago
Select United flight, departing Fri, Oct 16 from Austin-Bergstrom Intl. to George Bush Intercontinental, returning Mon, Oct 19, priced at $241 found 8 hours ago
Sat, Dec 12 - Sun, Dec 13
AUS
Austin-Bergstrom Intl.
IAH
George Bush Intercontinental
$250 Roundtrip, found 4 days ago
$250
Roundtrip
found 4 days ago
Select United flight, departing Sat, Dec 12 from Austin-Bergstrom Intl. to George Bush Intercontinental, returning Sun, Dec 13, priced at $250 found 4 days ago
Wed, Nov 4 - Sun, Nov 8
AUS
Austin-Bergstrom Intl.
IAH
George Bush Intercontinental
$251 Roundtrip, found 15 hours ago
$251
Roundtrip
found 15 hours ago
Select United flight, departing Wed, Nov 4 from Austin-Bergstrom Intl. to George Bush Intercontinental, returning Sun, Nov 8, priced at $251 found 15 hours ago
Sat, Dec 12 - Sun, Dec 13
AUS
Austin-Bergstrom Intl.
IAH
George Bush Intercontinental
$267 Roundtrip, found 4 days ago
$267
Roundtrip
found 4 days ago
Select United flight, departing Sat, Dec 12 from Austin-Bergstrom Intl. to George Bush Intercontinental, returning Sun, Dec 13, priced at $267 found 4 days ago
Wed, Nov 4 - Sun, Nov 8
AUS
Austin-Bergstrom Intl.
IAH
George Bush Intercontinental
$278 Roundtrip, found 15 hours ago
$278
Roundtrip
found 15 hours ago
Select United flight, departing Wed, Nov 4 from Austin-Bergstrom Intl. to George Bush Intercontinental, returning Sun, Nov 8, priced at $278 found 15 hours ago
Fri, Oct 9 - Sun, Oct 11
AUS
Austin-Bergstrom Intl.
IAH
George Bush Intercontinental
$281 Roundtrip, found 17 hours ago
$281
Roundtrip
found 17 hours ago
Select United flight, departing Fri, Oct 9 from Austin-Bergstrom Intl. to George Bush Intercontinental, returning Sun, Oct 11, priced at $281 found 17 hours ago
Sat, Dec 12 - Sun, Dec 13
AUS
Austin-Bergstrom Intl.
IAH
George Bush Intercontinental
$282 Roundtrip, found 4 days ago
$282
Roundtrip
found 4 days ago
Select United flight, departing Sat, Dec 12 from Austin-Bergstrom Intl. to George Bush Intercontinental, returning Sun, Dec 13, priced at $282 found 4 days ago

Frequently asked questions

What route does flight number UA3993 take?
UA3993 jets between Dulles Intl. Airport and Roanoke, VA Airport (ROA-Roanoke Regional) and flies direct. This service usually takes 1 hour and 10 minutes.
How often is UA3993 on time?
Around 97% of UA3993 flights arrive according to scheduled times — so if you'll be up in the air between IAD and Roanoke, VA Airport (ROA-Roanoke Regional), you can kick back knowing that you will land at your destination as quickly as possible. If your United Airlines trip is late, the average wait time is roughly 11 minutes. Thanks to the carrier's quality service, this route has a 4.4-star rating.
What kind of plane is on flight number UA3993?
The Bombardier CRJ is the type of aircraft that's mostly used for flight UA3993. Typically, this flight leaves from IAD and arrives at Roanoke, VA Airport (ROA-Roanoke Regional).
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 UA3993 flight with Travelocity, please visit our Customer Service Portal.