United Flight 1812 Deals & Information (2026/2027)

Wander Wisely with exceptional service, 24/7 supportOpens in a new window

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

United Flight 1812 Route Deals From $135

The cheapest prices found with in the last 7 days for return flights were $263 and $135 for one-way flights to Denver Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Jun 13 - Wed, Jun 17
LGA
LaGuardia
DEN
Denver Intl.
$263 Roundtrip, found 1 hour ago
$263
Roundtrip
found 1 hour ago
Select United flight, departing Sat, Jun 13 from LaGuardia to Denver Intl., returning Wed, Jun 17, priced at $263 found 1 hour ago
Tue, Jun 2 - Sat, Jun 6
LGA
LaGuardia
DEN
Denver Intl.
$266 Roundtrip, found 5 days ago
$266
Roundtrip
found 5 days ago
Select United flight, departing Tue, Jun 2 from LaGuardia to Denver Intl., returning Sat, Jun 6, priced at $266 found 5 days ago
Wed, Aug 19 - Wed, Aug 26
LGA
LaGuardia
DEN
Denver Intl.
$267 Roundtrip, found 2 days ago
$267
Roundtrip
found 2 days ago
Select United flight, departing Wed, Aug 19 from LaGuardia to Denver Intl., returning Wed, Aug 26, priced at $267 found 2 days ago
Sat, Jun 13 - Wed, Jun 17
LGA
LaGuardia
DEN
Denver Intl.
$273 Roundtrip, found 1 hour ago
$273
Roundtrip
found 1 hour ago
Select United flight, departing Sat, Jun 13 from LaGuardia to Denver Intl., returning Wed, Jun 17, priced at $273 found 1 hour ago
Tue, Jun 2 - Sat, Jun 6
LGA
LaGuardia
DEN
Denver Intl.
$280 Roundtrip, found 5 days ago
$280
Roundtrip
found 5 days ago
Select United flight, departing Tue, Jun 2 from LaGuardia to Denver Intl., returning Sat, Jun 6, priced at $280 found 5 days ago
Fri, Jun 5 - Sat, Jun 6
LGA
LaGuardia
DEN
Denver Intl.
$282 Roundtrip, found 1 day ago
$282
Roundtrip
found 1 day ago
Select United flight, departing Fri, Jun 5 from LaGuardia to Denver Intl., returning Sat, Jun 6, priced at $282 found 1 day ago
Wed, Aug 19 - Wed, Aug 26
LGA
LaGuardia
DEN
Denver Intl.
$283 Roundtrip, found 2 days ago
$283
Roundtrip
found 2 days ago
Select United flight, departing Wed, Aug 19 from LaGuardia to Denver Intl., returning Wed, Aug 26, priced at $283 found 2 days ago
Tue, Jul 7 - Tue, Jul 14
LGA
LaGuardia
DEN
Denver Intl.
$284 Roundtrip, found 3 days ago
$284
Roundtrip
found 3 days ago
Select United flight, departing Tue, Jul 7 from LaGuardia to Denver Intl., returning Tue, Jul 14, priced at $284 found 3 days ago
Tue, Jul 7 - Tue, Jul 14
LGA
LaGuardia
DEN
Denver Intl.
$292 Roundtrip, found 3 days ago
$292
Roundtrip
found 3 days ago
Select United flight, departing Tue, Jul 7 from LaGuardia to Denver Intl., returning Tue, Jul 14, priced at $292 found 3 days ago
Fri, Jul 3 - Wed, Jul 8
LGA
LaGuardia
DEN
Denver Intl.
$292 Roundtrip, found 21 hours ago
$292
Roundtrip
found 21 hours ago
Select United flight, departing Fri, Jul 3 from LaGuardia to Denver Intl., returning Wed, Jul 8, priced at $292 found 21 hours ago
Sat, Jun 20 - Tue, Jun 23
LGA
LaGuardia
DEN
Denver Intl.
$294 Roundtrip, found 14 hours ago
$294
Roundtrip
found 14 hours ago
Select United flight, departing Sat, Jun 20 from LaGuardia to Denver Intl., returning Tue, Jun 23, priced at $294 found 14 hours ago

Frequently asked questions

What route does flight number UA1812 take?
UA1812 takes 2 hours and 3 minutes to fly straight from MSO to Denver Intl. Airport (DEN). We all know there's magic in the destination, but half the fun is in the journey!
What kind of plane is on flight number UA1812?
The Airbus A320 is the type of aircraft most commonly used for flight number UA1812. This flight nearly always departs from Missoula Intl. Airport and arrives at Denver, CO Airport (DEN-Denver Intl.).
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 UA1812 flight with Travelocity, please visit our Customer Service Portal.