Cheap flights from Longmont

View AU$75 flight on Mon, 9 Feb 2026Opens in a new window

Popular airlines from Longmont

  • Alaska Airlines

    Alaska Airlines

  • American Airlines

    American Airlines

  • Delta

    Delta

  • United

    United

  • Frontier Airlines

    Frontier Airlines

  • Southwest Airlines

    Southwest Airlines

  • Air Canada

    Air Canada

  • notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
  • deals illustration

    Book smarter

    Save up to 35% on select hotels after you book a flight*
  • trophy illustration

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheapest flights from Longmont

These prices were available within the past 7 days. Prices quoted are per person, return, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Wed, 14 Jan - Wed, 21 Jan
DEN
Denver
LAX
Los Angeles
AU$180 Return, found 1 day ago
AU$180
Return
found 1 day ago
Select American Airlines flight, departing Wed, 14 Jan from Denver to Los Angeles, returning Wed, 21 Jan, priced at AU$180 found 1 day ago
Delta
Mon, 12 Jan - Tue, 27 Jan
DEN
Denver
LAX
Los Angeles
AU$181 Return, found 3 days ago
AU$181
Return
found 3 days ago
Select Delta flight, departing Mon, 12 Jan from Denver to Los Angeles, returning Tue, 27 Jan, priced at AU$181 found 3 days ago
American Airlines
Sat, 10 Jan - Sun, 11 Jan
DEN
Denver
PHX
Phoenix
AU$191 Return, found 3 days ago
AU$191
Return
found 3 days ago
Select American Airlines flight, departing Sat, 10 Jan from Denver to Phoenix, returning Sun, 11 Jan, priced at AU$191 found 3 days ago
Alaska Airlines
Wed, 14 Jan - Wed, 21 Jan
DEN
Denver
LAS
Las Vegas
AU$210 Return, found 1 day ago
AU$210
Return
found 1 day ago
Select Alaska Airlines flight, departing Wed, 14 Jan from Denver to Las Vegas, returning Wed, 21 Jan, priced at AU$210 found 1 day ago
American Airlines
Sat, 24 Jan - Sat, 31 Jan
DEN
Denver
DFW
Dallas
AU$211 Return, found 11 hours ago
AU$211
Return
found 11 hours ago
Select American Airlines flight, departing Sat, 24 Jan from Denver to Dallas, returning Sat, 31 Jan, priced at AU$211 found 11 hours ago
American Airlines
Sat, 31 Jan - Wed, 4 Feb
DEN
Denver
MIA
Miami
AU$245 Return, found 6 days ago
AU$245
Return
found 6 days ago
Select American Airlines flight, departing Sat, 31 Jan from Denver to Miami, returning Wed, 4 Feb, priced at AU$245 found 6 days ago
Alaska Airlines
Fri, 2 Jan - Mon, 5 Jan
DEN
Denver
SAN
San Diego
AU$256 Return, found 2 days ago
AU$256
Return
found 2 days ago
Select Alaska Airlines flight, departing Fri, 2 Jan from Denver to San Diego, returning Mon, 5 Jan, priced at AU$256 found 2 days ago
Hawaiian Airlines
Thu, 8 Jan - Thu, 22 Jan
DEN
Denver
LAX
Los Angeles
AU$263 Return, found 3 days ago
AU$263
Return
found 3 days ago
Select Hawaiian Airlines flight, departing Thu, 8 Jan from Denver to Los Angeles, returning Thu, 22 Jan, priced at AU$263 found 3 days ago
Delta
Sat, 24 Jan - Sat, 31 Jan
DEN
Denver
DAL
Dallas
AU$271 Return, found 11 hours ago
AU$271
Return
found 11 hours ago
Select Delta flight, departing Sat, 24 Jan from Denver to Dallas, returning Sat, 31 Jan, priced at AU$271 found 11 hours ago
United
Mon, 26 Jan - Fri, 13 Feb
DEN
Denver
LAX
Los Angeles
AU$289 Return, found 3 days ago
AU$289
Return
found 3 days ago
Select United flight, departing Mon, 26 Jan from Denver to Los Angeles, returning Fri, 13 Feb, priced at AU$289 found 3 days ago

Black Friday Sale

Save up to 40% on select hotels
Book now

Flights from Longmont: Essential Travel Information

Cheapest flight from Longmont
AU$180 (roundtrip)
Best airlines to fly from Longmont
Alaska Airlines, American Airlines, Delta, United, Hawaiian Airlines
Cheapest month to fly from Longmont
January
Longmont IATA code
DEN
Longmont Country/State
Colorado
Airline ticket deals from Longmont
AU$180 - AU$289

Explore a world of travel with Expedia

*Available to Expedia members.