United Flight 391 Deals & Information (2026/2027)

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United Flight 391 Route Deals From $329

The cheapest prices found with in the last 7 days for return flights were $389 and $329 for one-way flights to Denver Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Nov 9 - Sat, Nov 14
BTV
Burlington Intl.
DEN
Denver Intl.
$389 Roundtrip, found 5 hours ago
$389
Roundtrip
found 5 hours ago
Select United flight, departing Mon, Nov 9 from Burlington Intl. to Denver Intl., returning Sat, Nov 14, priced at $389 found 5 hours ago
Thu, Nov 5 - Mon, Nov 9
BTV
Burlington Intl.
DEN
Denver Intl.
$395 Roundtrip, found 3 days ago
$395
Roundtrip
found 3 days ago
Select United flight, departing Thu, Nov 5 from Burlington Intl. to Denver Intl., returning Mon, Nov 9, priced at $395 found 3 days ago
Mon, Nov 9 - Sat, Nov 14
BTV
Burlington Intl.
DEN
Denver Intl.
$400 Roundtrip, found 5 hours ago
$400
Roundtrip
found 5 hours ago
Select United flight, departing Mon, Nov 9 from Burlington Intl. to Denver Intl., returning Sat, Nov 14, priced at $400 found 5 hours ago
Thu, Nov 5 - Mon, Nov 9
BTV
Burlington Intl.
DEN
Denver Intl.
$404 Roundtrip, found 3 days ago
$404
Roundtrip
found 3 days ago
Select United flight, departing Thu, Nov 5 from Burlington Intl. to Denver Intl., returning Mon, Nov 9, priced at $404 found 3 days ago
Mon, Nov 9 - Sat, Nov 14
BTV
Burlington Intl.
DEN
Denver Intl.
$410 Roundtrip, found 5 hours ago
$410
Roundtrip
found 5 hours ago
Select United flight, departing Mon, Nov 9 from Burlington Intl. to Denver Intl., returning Sat, Nov 14, priced at $410 found 5 hours ago
Mon, Nov 9 - Sat, Nov 14
BTV
Burlington Intl.
DEN
Denver Intl.
$415 Roundtrip, found 5 hours ago
$415
Roundtrip
found 5 hours ago
Select United flight, departing Mon, Nov 9 from Burlington Intl. to Denver Intl., returning Sat, Nov 14, priced at $415 found 5 hours ago
Thu, Nov 5 - Mon, Nov 9
BTV
Burlington Intl.
DEN
Denver Intl.
$415 Roundtrip, found 3 days ago
$415
Roundtrip
found 3 days ago
Select United flight, departing Thu, Nov 5 from Burlington Intl. to Denver Intl., returning Mon, Nov 9, priced at $415 found 3 days ago
Fri, Oct 16 - Sun, Oct 18
BTV
Burlington Intl.
DEN
Denver Intl.
$416 Roundtrip, found 4 days ago
$416
Roundtrip
found 4 days ago
Select United flight, departing Fri, Oct 16 from Burlington Intl. to Denver Intl., returning Sun, Oct 18, priced at $416 found 4 days ago
Sat, May 1 - Sat, May 15
BTV
Burlington Intl.
DEN
Denver Intl.
$418 Roundtrip, found 5 days ago
$418
Roundtrip
found 5 days ago
Select United flight, departing Sat, May 1 from Burlington Intl. to Denver Intl., returning Sat, May 15, priced at $418 found 5 days ago
Mon, Oct 19 - Sat, Oct 31
BTV
Burlington Intl.
DEN
Denver Intl.
$422 Roundtrip, found 2 days ago
$422
Roundtrip
found 2 days ago
Select United flight, departing Mon, Oct 19 from Burlington Intl. to Denver Intl., returning Sat, Oct 31, priced at $422 found 2 days ago
Thu, Dec 3 - Mon, Dec 7
BTV
Burlington Intl.
DEN
Denver Intl.
$424 Roundtrip, found 4 days ago
$424
Roundtrip
found 4 days ago
Select United flight, departing Thu, Dec 3 from Burlington Intl. to Denver Intl., returning Mon, Dec 7, priced at $424 found 4 days ago
Mon, Nov 9 - Sat, Nov 14
BTV
Burlington Intl.
DEN
Denver Intl.
$425 Roundtrip, found 5 hours ago
$425
Roundtrip
found 5 hours ago
Select United flight, departing Mon, Nov 9 from Burlington Intl. to Denver Intl., returning Sat, Nov 14, priced at $425 found 5 hours ago
Thu, Nov 5 - Mon, Nov 9
BTV
Burlington Intl.
DEN
Denver Intl.
$425 Roundtrip, found 3 days ago
$425
Roundtrip
found 3 days ago
Select United flight, departing Thu, Nov 5 from Burlington Intl. to Denver Intl., returning Mon, Nov 9, priced at $425 found 3 days ago
Sat, May 1 - Sat, May 15
BTV
Burlington Intl.
DEN
Denver Intl.
$428 Roundtrip, found 5 days ago
$428
Roundtrip
found 5 days ago
Select United flight, departing Sat, May 1 from Burlington Intl. to Denver Intl., returning Sat, May 15, priced at $428 found 5 days 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.