United Flight WN391 Deals & Information (2025/2026)

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United Flight 391 Route Deals From

The cheapest prices found with in the last 7 days for return flights were $177 and for one-way flights to Austin-Bergstrom Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Dec 3 - Tue, Dec 9
SFO
San Francisco Intl.
AUS
Austin-Bergstrom Intl.
$177 Roundtrip, found 20 hours ago
$177
Roundtrip
found 20 hours ago
Select United flight, departing Wed, Dec 3 from San Francisco Intl. to Austin-Bergstrom Intl., returning Tue, Dec 9, priced at $177 found 20 hours ago
Wed, Dec 3 - Tue, Dec 9
SFO
San Francisco Intl.
AUS
Austin-Bergstrom Intl.
$180 Roundtrip, found 20 hours ago
$180
Roundtrip
found 20 hours ago
Select United flight, departing Wed, Dec 3 from San Francisco Intl. to Austin-Bergstrom Intl., returning Tue, Dec 9, priced at $180 found 20 hours ago

Frequently asked questions

What route does flight number UA391 take?
Flight number UA391 takes about 1 hour and 18 minutes to fly straight from Houston, TX Airport (IAH-George Bush Intercontinental) to Miller Intl. Airport (MFE). We all know there's magic in the destination, but the journey is always half the fun!
What terminal does UA391 fly out of?
Passengers with seats on flight number UA391 from George Bush Intercontinental Airport (IAH) to McAllen, TX Airport (MFE-Miller Intl.) generally jet off from Terminal C.
What kind of plane is on flight number UA391?
There's a strong chance you'll find yourself boarding the Boeing 737-700 if you have a seat on flight UA391. Typically, this flight leaves from Houston Airport and lands at McAllen Miller Intl. Airport.
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 UA391 flight with Travelocity, please visit our Customer Service Portal.