A snow-capped mountain range with a visible moon in the sky.

Cheap Flights to Longmont , CO from CA $212

View CA $212 flight on Fri, Aug 14, 2026Opens in a new window

Popular airlines to Longmont

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 30% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

How much is the cheapest flight to Longmont?

Prices were available within the past 7 days and start at CA $212 for one-way flights and CA $268 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Thu, Aug 20 - Thu, Sep 10
YYC
Calgary
DEN
Denver
CA $344 Roundtrip, found 6 days ago
CA $344
Roundtrip
found 6 days ago
Select Air Canada flight, departing Thu, Aug 20 from Calgary to Denver, returning Thu, Sep 10, priced at CA $344 found 6 days ago
WestJet
Sat, Aug 22 - Sat, Aug 29
YYC
Calgary
DEN
Denver
CA $355 Roundtrip, found 4 days ago
CA $355
Roundtrip
found 4 days ago
Select WestJet flight, departing Sat, Aug 22 from Calgary to Denver, returning Sat, Aug 29, priced at CA $355 found 4 days ago
Delta
Sat, Nov 21 - Sat, Nov 28
YYC
Calgary
DEN
Denver
CA $370 Roundtrip, found 8 hours ago
CA $370
Roundtrip
found 8 hours ago
Select Delta flight, departing Sat, Nov 21 from Calgary to Denver, returning Sat, Nov 28, priced at CA $370 found 8 hours ago
United
Wed, Sep 2 - Sun, Sep 6
YYC
Calgary
DEN
Denver
CA $392 Roundtrip, found 13 hours ago
CA $392
Roundtrip
found 13 hours ago
Select United flight, departing Wed, Sep 2 from Calgary to Denver, returning Sun, Sep 6, priced at CA $392 found 13 hours ago
American Airlines
Fri, Sep 25 - Wed, Sep 30
YYZ
Toronto
DEN
Denver
CA $594 Roundtrip, found 14 hours ago
CA $594
Roundtrip
found 14 hours ago
Select American Airlines flight, departing Fri, Sep 25 from Toronto to Denver, returning Wed, Sep 30, priced at CA $594 found 14 hours ago

Frequently asked questions

What is the name of Longmont's airport?
Denver Intl. Airport (DEN) is the main airport in Longmont.
What airport is best to fly into Longmont?
Head through the exit of Denver Airport and your Longmont getaway will have begun! The city's main airport, it's located 48 kilometres from the downtown area.
How many airlines fly to Longmont?
Longmont is serviced by 24 airlines from at least 204 airports around the world.
Which airlines fly to Longmont?
Southwest Airlines, United Airlines and Frontier Airlines fly the most frequently to Longmont. The highest number of flights begin in Phoenix, with Southwest Airlines offering the most services on this route.
How many nonstop flights are there to Longmont?
Organizing an exciting Longmont adventure is a walk in the park when there are 5,892 direct flights each week to pick from.
Where are the most popular flights to Longmont departing from?
Flights to Longmont from Phoenix, Dallas and Salt Lake City airports are the most in demand.
How long is the flight to Longmont Airport?
If it's Phoenix you're departing, you'll be airborne for around 1 hour and 51 minutes before you touchdown in Longmont. Terminal to terminal from Dallas generally takes 2 hours and 10 minutes and from Salt Lake City, the average flight time is 1 hour and 40 minutes.
How to book the cheapest flight to Longmont?
We all know those fortunate jet-setters who manage to grab extremely cheap fares wherever they go. Would you like to know how to do it for your Longmont vacation? Don't wait until the last minute to lock in your flight. Another good way to nab a bargain is to compare all options. If your destination has more than one airport, don't forget to research the cost of flying into a smaller terminal. Last of all, be prepared to book quickly if you find an irresistible price. It might not be available for too long. With a bit of knowledge and some good fortune, the ideal airfare can be yours.
Do you have any tips for my flight to Longmont?
We've rounded up all the info you need to make your journey as stress-free as possible. Follow our tips and you'll be zooming through airport security and having a blast in Longmont in no time at all. What to pack in your hand luggage:

  • First things first, pack in your passport, important documents, bank cards and medications. Next, you'll want some extra in-flight entertainment to while away the hours. A juicy book and a laptop filled with your favourite movies are some fantastic options. If you plan to take a quick snooze, a neck pillow and a pair of earplugs will also be useful. Finally, make room for a toothbrush and some facial wipes so you'll touchdown looking fresh and ready to go.

Do not pack the following items in your hand luggage:

  • Make sure you don't have a Swiss Army knife hiding in one of the zippers of your carry-on luggage. Other prohibited items include flammable or explosive goods, such as aerosol cans and fuel, and liquids and gels in containers with a volume of more than 3.4 ounces (100 millilitres).

What to wear on a flight:

  • Go for comfort over style. Prepare for changes in cabin temperature by wearing layers, and wear closed-toe, flat footwear like sneakers.
  • Deep vein thrombosis (DVT) is a potential risk on long-haul flights. It's the result of blood clotting due to poor circulation, so do some gentle leg and foot exercises in your seat and consider wearing compression socks or tights.

How to get through airport security fast when flying to Longmont?
The simple answer is — be prepared. We've put together some helpful hints for a hassle-free trip through airport security. Watch out Longmont, here you come:

  • Be sure to keep your passport and travel documents handy. They're the first items you'll be asked for by security.
  • After that, both you and your carry-on bag will be X-rayed. To speed things up, take off anything that is likely to set the alarm off. Items like your belt, coat and headphones need to go through the machine.
  • All electronic devices, including your phone and tablet, are also required to be separately scanned.
  • Any gels or liquids, such as perfume or toothpaste, that you want to bring on board need to be in containers no larger than 3.4 ounces (100 millilitres). They must also all fit inside a quart-size (one litre), clear zip-close bag.
  • The right choice of footwear can save you several valuable minutes. Boots and heavy shoes are often required to be removed and separately scanned. Lightweight sneakers are usually not.
  • Sharp or pointed objects (like knives and scissors) are not allowed in the cabin. They'll be seized at security, so pack them in your checked baggage.

Book with confidence

Expedia.ca gives you the best tools to secure great deals on flights to Longmont. Use our easy and convenient booking engine to browse nonstop flights and convenient departure points every day of the year. Search airfares from the top airlines to book your perfect flight to Longmont. Whatever your travel needs, you can always rely on Expedia.ca to help you find cheap flights to Longmont.

Using our booking engine is simple - just type in your points of travel and preferred dates and Expedia.ca does the rest! If your travel times are flexible, you can find even better bargains by adjusting your flight dates. Browse connecting flights to increase your chances of finding even lower fares. Thanks to Expedia's Best Price Guarantee, you can book your Longmont flights with full confidence knowing that you've found the best deal online.

Expedia.ca makes the booking process easy and stress-free by offering support along the entire way. Our friendly staff is available 24 hours a day to provide assistance and help you book your ticket. Call us toll-free at 1-888-397-3342 to answer any questions that you may have about your trip to Longmont.

Looking to save even more? Get additional savings by bundling your Longmont flight with a hotel and/or car rental to create a bargain travel package. Early birds can discover terrific savings by booking in advance while last minute travelers can enjoy great last minute deals. With Expedia.ca, there's no shortage of options to save even more on your Longmont trip!

Travel information

Destination airport
Denver Intl.
Destination airport IATA code
DEN
Destination city name
Denver
Roundtrip price
CA $268

Trending flights to Longmont

Prices were available within the past 7 days and start at CA $212 for one-way flights and CA $268 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Sep 15 - Tue, Sep 15
YVR
Vancouver
DEN
Denver
CA $268 Roundtrip, found 1 day ago
CA $268
Roundtrip
found 1 day ago
Select United flight, departing Tue, Sep 15 from Vancouver to Denver, returning Tue, Sep 15, priced at CA $268 found 1 day ago

Explore a world of travel with Expedia

*Available to Expedia members.