Cheap Flights to Thornton , CO from CA $108

View CA $108 flight on Sat, Aug. 30, 2025Opens in a new window

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How much is the cheapest flight to Thornton?

Prices were available within the past 7 days and start at CA $108 for one-way flights and CA $182 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Sep. 30 - Sat, Oct. 11
DTW
Detroit
DEN
Denver
CA $182 Roundtrip, found 4 days ago
CA $182
Roundtrip
found 4 days ago
Select Delta flight, departing Tue, Sep. 30 from Detroit to Denver, returning Sat, Oct. 11, priced at CA $182 found 4 days ago
American Airlines
Sat, Aug. 30 - Sat, Sep. 6
DTW
Detroit
DEN
Denver
CA $217 Roundtrip, found 3 days ago
CA $217
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sat, Aug. 30 from Detroit to Denver, returning Sat, Sep. 6, priced at CA $217 found 3 days ago
Air Canada
Tue, Oct. 14 - Wed, Oct. 22
YYC
Calgary
DEN
Denver
CA $241 Roundtrip, found 3 hours ago
CA $241
Roundtrip
found 3 hours ago
Select Air Canada flight, departing Tue, Oct. 14 from Calgary to Denver, returning Wed, Oct. 22, priced at CA $241 found 3 hours ago
United
Thu, Nov. 27 - Thu, Nov. 27
YYC
Calgary
DEN
Denver
CA $241 Roundtrip, just found
CA $241
Roundtrip
just found
Select United flight, departing Thu, Nov. 27 from Calgary to Denver, returning Thu, Nov. 27, priced at CA $241 just found
WestJet
Mon, Aug. 18 - Thu, Sep. 4
YYC
Calgary
DEN
Denver
CA $260 Roundtrip, found 3 days ago
CA $260
Roundtrip
found 3 days ago
Select WestJet flight, departing Mon, Aug. 18 from Calgary to Denver, returning Thu, Sep. 4, priced at CA $260 found 3 days ago

Find the cheapest month to fly from Columbus (CMH) to Denver (DEN)

August is typically the cheapest month to fly

From CA $129 - CA $406 per traveller.

Graph displaying average flight prices per month

Expedia.ca gives you the best tools to secure great deals on flights to Thornton. 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 Thornton. Whatever your travel needs, you can always rely on Expedia.ca to help you find cheap flights to Thornton.

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 Thornton 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 Thornton.

Looking to save even more? Get additional savings by bundling your Thornton 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 Thornton trip!

Frequently asked questions

What is the name of Thornton's airport?
Book a flight to Thornton with Expedia and you'll be landing at Denver Intl. Airport (DEN).
How far is DIA airport from central Thornton?
The journey from Denver Intl. Airport (DEN) to downtown Thornton is reasonably long. You'll have to travel 26 kilometres before you can check in to your city hotel.
What airport is best to fly into Thornton?
With only one main airport in Thornton, it won't take much time to discover the best flight. You'll be taking off to DIA airport, which is located around 26 kilometres from downtown.
How many airlines fly to Thornton?
Thornton is serviced by 24 airlines from 204 airports around the world.
Which airlines fly to Thornton?
Most often, travellers choose to fly with Southwest Airlines, United Airlines and Frontier Airlines when going to Thornton. The majority of these flights depart from Phoenix, with Southwest Airlines servicing this route the most.
How many nonstop flights are there to Thornton?
Planning an amazing Thornton escape is a cinch when there are 5,892 direct flights each week to get you there.
Where are the most popular flights to Thornton departing from?
Flights to Thornton from Phoenix, Dallas and Salt Lake City airports are always popular.
How long is the flight to Thornton Airport?
Where you depart from determines how long you'll be strapped into your seat. From Phoenix to Thornton, the average flight time is 1 hour and 51 minutes. From Dallas it's more or less 2 hours and 10 minutes, and from Salt Lake City it's 1 hour and 40 minutes.
How to book the cheapest flight to Thornton?
If you want to save some cash on your trip to Thornton, then listen up! As every experienced jet-setter will tell you, avoid booking at the last minute. Fares are generally more expensive close to the departure date. Another excellent way to nab a bargain is to shop around. If where you're headed has several airports, don't forget to look into the cost of flying into a smaller terminal. And finally, don't forget that the early bird catches the worm. Familiarize yourself with airfare costs and be ready to book your ticket as soon as you spot a bargain. The best deals never last long.
Do you have any tips for my flight to Thornton?
We've rounded up all the info you need to make your flight an enjoyable experience. Follow our tips and you'll be hightailing it through airport security and enjoying Thornton in no time. What to pack in your hand luggage:

  • Air travel can be a pleasure if you take the right gear. Firstly, you'll need toiletry items, such as deodorant and a toothbrush, a clean set of clothes and a good book. Secondly, find a spot in your carry-on bag for your electronic devices, chargers, your medications and maybe a blow-up neck pillow as well. Last, but definitely not least, don't forget to take your passport, travel docs and some money.

Do not pack the following items in your hand luggage:

  • Put all your full-sized bottles of shampoo and hairspray in your checked luggage. Any gels or liquids in your carry-on bag larger than 3.4 ounces (100 millilitres) will be confiscated. Sharp objects, like a pocket knife, and dangerous products which are explosive or flammable, such as aerosol cans, flares and gasoline, are also not allowed.

What to wear on a flight:

  • The aisles of an aircraft aren't the place for a fashion parade. Dress in comfortable layers and go for shoes that are flat and easy to take on and off.
  • Deep vein thrombosis (DVT), a blood clot condition caused by prolonged inactivity, can be a risk on long-haul flights. Walk around the cabin and give your legs a stretch or do some simple exercises in your seat to improve your circulation.

How to get through airport security fast when flying to Thornton?
The secret is to be well organized before you get to airport security. That way, you'll be boarding that plane to Thornton in no time at all. Follow these tips and get your vacation off to a fantastic start:

  • Airport security personnel first need to see that you have a valid ID and matching travel documents before anything else. Have them close by, ready for inspection.
  • Next up, both you and your carry-on bag must be X-rayed. To make the process quick and painless, remove anything that is likely to set the alarm off. Items like your belt, jacket and earphones will be required to go through the machine.
  • For just a few minutes, you'll need to unplug from technology. Your tablet, phone and any other electronics also need to be sent through the scanner.
  • Any liquids or gels, such as lip balm or cologne, that you want to bring on board must be no greater than 3.4 ounces (100 millilitres). Also, they all must fit inside a quart-size (one litre), clear zip-lock bag.
  • The right choice of footwear can save you valuable minutes. Boots are often required to be removed and X-rayed separately. Slip-on shoes are usually not.
  • Airlines will not allow any sharp objects in your hand luggage. If you must bring these kinds of items, pack them safely in your checked luggage.

Flights to Thornton information
Destination airport
Denver Intl.
Destination airport IATA code
DEN
Destination city name
Denver
Roundtrip price
CA $181

Trending flights to Thornton

Prices were available within the past 7 days and start at CA $108 for one-way flights and CA $182 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Tue, Oct. 14 - Wed, Oct. 22
YYC
Calgary
DEN
Denver
CA $241 Roundtrip, found 3 hours ago
CA $241
Roundtrip
found 3 hours ago
Select Air Canada flight, departing Tue, Oct. 14 from Calgary to Denver, returning Wed, Oct. 22, priced at CA $241 found 3 hours ago
*Available to Expedia members.