United Flight 3993 Deals & Information (2026/2027)

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United Flight 3993 Route Deals From $62

The cheapest prices found with in the last 7 days for return flights were $163 and $62 for one-way flights to George Bush Intercontinental for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Jan 2 - Sat, Jan 16
AUS
Austin-Bergstrom Intl.
IAH
George Bush Intercontinental
$163 Roundtrip, found 2 days ago
$163
Roundtrip
found 2 days ago
Select United flight, departing Sat, Jan 2 from Austin-Bergstrom Intl. to George Bush Intercontinental, returning Sat, Jan 16, priced at $163 found 2 days ago
Sun, Sep 13 - Mon, Sep 14
AUS
Austin-Bergstrom Intl.
IAH
George Bush Intercontinental
$168 Roundtrip, found 1 day ago
$168
Roundtrip
found 1 day ago
Select United flight, departing Sun, Sep 13 from Austin-Bergstrom Intl. to George Bush Intercontinental, returning Mon, Sep 14, priced at $168 found 1 day ago
Fri, Sep 4 - Sun, Sep 6
AUS
Austin-Bergstrom Intl.
IAH
George Bush Intercontinental
$177 Roundtrip, found 1 day ago
$177
Roundtrip
found 1 day ago
Select United flight, departing Fri, Sep 4 from Austin-Bergstrom Intl. to George Bush Intercontinental, returning Sun, Sep 6, priced at $177 found 1 day ago
Sat, Jan 2 - Sat, Jan 16
AUS
Austin-Bergstrom Intl.
IAH
George Bush Intercontinental
$180 Roundtrip, found 2 days ago
$180
Roundtrip
found 2 days ago
Select United flight, departing Sat, Jan 2 from Austin-Bergstrom Intl. to George Bush Intercontinental, returning Sat, Jan 16, priced at $180 found 2 days ago
Fri, Sep 4 - Sun, Sep 6
AUS
Austin-Bergstrom Intl.
IAH
George Bush Intercontinental
$182 Roundtrip, found 1 day ago
$182
Roundtrip
found 1 day ago
Select United flight, departing Fri, Sep 4 from Austin-Bergstrom Intl. to George Bush Intercontinental, returning Sun, Sep 6, priced at $182 found 1 day ago
Fri, Nov 13 - Sun, Nov 15
AUS
Austin-Bergstrom Intl.
IAH
George Bush Intercontinental
$185 Roundtrip, found 15 hours ago
$185
Roundtrip
found 15 hours ago
Select United flight, departing Fri, Nov 13 from Austin-Bergstrom Intl. to George Bush Intercontinental, returning Sun, Nov 15, priced at $185 found 15 hours ago
Sat, Jan 2 - Sat, Jan 16
AUS
Austin-Bergstrom Intl.
IAH
George Bush Intercontinental
$197 Roundtrip, found 2 days ago
$197
Roundtrip
found 2 days ago
Select United flight, departing Sat, Jan 2 from Austin-Bergstrom Intl. to George Bush Intercontinental, returning Sat, Jan 16, priced at $197 found 2 days ago
Thu, Oct 22 - Tue, Oct 27
AUS
Austin-Bergstrom Intl.
IAH
George Bush Intercontinental
$197 Roundtrip, found 3 days ago
$197
Roundtrip
found 3 days ago
Select United flight, departing Thu, Oct 22 from Austin-Bergstrom Intl. to George Bush Intercontinental, returning Tue, Oct 27, priced at $197 found 3 days ago
Fri, Nov 13 - Sun, Nov 15
AUS
Austin-Bergstrom Intl.
IAH
George Bush Intercontinental
$200 Roundtrip, found 15 hours ago
$200
Roundtrip
found 15 hours ago
Select United flight, departing Fri, Nov 13 from Austin-Bergstrom Intl. to George Bush Intercontinental, returning Sun, Nov 15, priced at $200 found 15 hours ago
Mon, Sep 28 - Wed, Sep 30
AUS
Austin-Bergstrom Intl.
IAH
George Bush Intercontinental
$200 Roundtrip, found 3 days ago
$200
Roundtrip
found 3 days ago
Select United flight, departing Mon, Sep 28 from Austin-Bergstrom Intl. to George Bush Intercontinental, returning Wed, Sep 30, priced at $200 found 3 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.