United Flight 1812 Deals & Information (2026/2027)

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United Flight 1812 Route Deals From $133

The cheapest prices found with in the last 7 days for return flights were $263 and $133 for one-way flights to Denver Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Jun 13 - Tue, Jun 16
LGA
LaGuardia
DEN
Denver Intl.
$263 Roundtrip, just found
$263
Roundtrip
just found
Select United flight, departing Sat, Jun 13 from LaGuardia to Denver Intl., returning Tue, Jun 16, priced at $263 just found
Wed, Aug 19 - Wed, Aug 26
LGA
LaGuardia
DEN
Denver Intl.
$267 Roundtrip, found 4 days ago
$267
Roundtrip
found 4 days ago
Select United flight, departing Wed, Aug 19 from LaGuardia to Denver Intl., returning Wed, Aug 26, priced at $267 found 4 days ago
Sat, Jun 13 - Tue, Jun 16
LGA
LaGuardia
DEN
Denver Intl.
$273 Roundtrip, just found
$273
Roundtrip
just found
Select United flight, departing Sat, Jun 13 from LaGuardia to Denver Intl., returning Tue, Jun 16, priced at $273 just found
Wed, Aug 19 - Wed, Aug 26
LGA
LaGuardia
DEN
Denver Intl.
$283 Roundtrip, found 4 days ago
$283
Roundtrip
found 4 days ago
Select United flight, departing Wed, Aug 19 from LaGuardia to Denver Intl., returning Wed, Aug 26, priced at $283 found 4 days ago
Tue, Jul 7 - Tue, Jul 14
LGA
LaGuardia
DEN
Denver Intl.
$284 Roundtrip, found 4 days ago
$284
Roundtrip
found 4 days ago
Select United flight, departing Tue, Jul 7 from LaGuardia to Denver Intl., returning Tue, Jul 14, priced at $284 found 4 days ago
Sat, Jun 13 - Tue, Jun 16
LGA
LaGuardia
DEN
Denver Intl.
$292 Roundtrip, just found
$292
Roundtrip
just found
Select United flight, departing Sat, Jun 13 from LaGuardia to Denver Intl., returning Tue, Jun 16, priced at $292 just found
Fri, Jul 3 - Wed, Jul 8
LGA
LaGuardia
DEN
Denver Intl.
$292 Roundtrip, found 2 days ago
$292
Roundtrip
found 2 days ago
Select United flight, departing Fri, Jul 3 from LaGuardia to Denver Intl., returning Wed, Jul 8, priced at $292 found 2 days ago
Sat, Jun 20 - Tue, Jun 23
LGA
LaGuardia
DEN
Denver Intl.
$294 Roundtrip, found 2 days ago
$294
Roundtrip
found 2 days ago
Select United flight, departing Sat, Jun 20 from LaGuardia to Denver Intl., returning Tue, Jun 23, priced at $294 found 2 days ago
Sat, Jun 13 - Tue, Jun 16
LGA
LaGuardia
DEN
Denver Intl.
$299 Roundtrip, just found
$299
Roundtrip
just found
Select United flight, departing Sat, Jun 13 from LaGuardia to Denver Intl., returning Tue, Jun 16, priced at $299 just found

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.