Cheap Flights to Thornton: Thornton Flight Deals

View €81 flight on Thu, 12 Mar 2026Opens in a new window

Popular airlines to Thornton

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Cheap round-trip flights to Thornton

Prices were available within the past 7 days and start at €81 for one-way flights and €161 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Thu, 12 Mar - Mon, 16 Mar
ORD
Chicago
DEN
Denver
€161 Return, found 1 hour ago
€161
Return
found 1 hour ago
Select American Airlines flight, departing Thu, 12 Mar from Chicago to Denver, returning Mon, 16 Mar, priced at €161 found 1 hour ago
Delta
Fri, 3 Jul - Fri, 10 Jul
ORD
Chicago
DEN
Denver
€206 Return, found 18 hours ago
€206
Return
found 18 hours ago
Select Delta flight, departing Fri, 3 Jul from Chicago to Denver, returning Fri, 10 Jul, priced at €206 found 18 hours ago
United
Thu, 12 Mar - Mon, 16 Mar
ORD
Chicago
DEN
Denver
€222 Return, found 1 hour ago
€222
Return
found 1 hour ago
Select United flight, departing Thu, 12 Mar from Chicago to Denver, returning Mon, 16 Mar, priced at €222 found 1 hour ago
British Airways
Tue, 3 Mar - Tue, 10 Mar
DUB
Dublin
DEN
Denver
€377 Return, found 19 hours ago
€377
Return
found 19 hours ago
Select British Airways flight, departing Tue, 3 Mar from Dublin to Denver, returning Tue, 10 Mar, priced at €377 found 19 hours ago
Iberia
Tue, 3 Nov - Tue, 10 Nov
DUB
Dublin
DEN
Denver
€382 Return, found 2 days ago
€382
Return
found 2 days ago
Select Iberia flight, departing Tue, 3 Nov from Dublin to Denver, returning Tue, 10 Nov, priced at €382 found 2 days ago

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

October is typically the cheapest month to fly

From €99 - €186 per traveller.

Expedia.ie is an online travel company that specialises in securing the best prices for flights to Thornton. With Expedia you get highly specialised services, combining the best of technology, in-depth knowledge and the best connections in order to offer great deals to Thornton. Expedia shares your passion for travel and has built the best online travel service that promotes and encourages travel. Whether you are looking for cheap flights to Thornton, or are just on the lookout for the best flights to Thornton, you are sure to find the best deals with Expedia.ie.

"One of the many benefits of booking your flights through Expedia is that we are one of the world’s largest online travel agency, which means we use our collective experience and work tirelessly to bring you the best prices. With Expedia you get a user-friendly internet experience and a dedicated customer support service that ensures that everything goes smoothly. The goal of Expedia is to offer premium services at the lowest price, all at one single place. If you wish to save even more try combing a hotel in Thornton to your flight and create a personalised low cost city break or holiday to your favourite destination. Book early and you could save even more!

If you have an Expedia.ie itinerary number and have a question or concern about your travel plans you can call us on (01) 524 5005 from 8am - 10pm Monday to Friday, and 9am - 10pm at weekends and an Expedia agent will help you.

Frequently asked questions

What is the name of Thornton's airport?
Thornton has one main airport, Denver Intl. Airport (DEN).
How far is Denver Airport from central Thornton?
The journey between Denver Airport and downtown Thornton is reasonably long. You'll need to travel 26 kilometres before you can check in to your hotel in the city.
What airport is best to fly into Thornton?
Denver Intl. Airport (DEN) is the main airport in Thornton. Before you jet off, it's a wise idea to find out a thing or two about it. The terminal sits 26 kilometres from the centre of town.
How many airlines fly to Thornton?
Thornton is serviced by 24 air carriers from 204 worldwide airports.
Which airlines fly to Thornton?
Southwest Airlines, United Airlines and Frontier Airlines are the most frequent fliers to Thornton. The majority of flights come in from Phoenix, with Southwest Airlines offering the most services on this route.
How many nonstop flights are there to Thornton?
With approximately 5,892 nonstop flights every week, you'll be hitting the runway in Thornton before you can ask, "Are we there yet?"
Where are the most popular flights to Thornton departing from?
The most popular flights to Thornton set off from Phoenix, Dallas and Salt Lake City airports.
How long is the flight to Thornton Airport?
If you're going to Thornton from Phoenix, you'll have a flight duration of 1 hour and 51 minutes. Those setting off from Dallas can expect to be airborne for 2 hours and 10 minutes. From Salt Lake City it's about 1 hour and 40 minutes away.
How to book the cheapest flight to Thornton?
We all know those lucky jet-setters who somehow grab impossibly cheap plane tickets whenever they fly. Would you like to know how to do it for your Thornton holiday? Don't leave it until the last possible moment to secure your flight. Don't stop there, though. Do some research and find out if there are a couple of airports at your destination. Prices often differ depending on which airport you go for. Be sure to compare prices across air carriers too. And finally, remember that it's first in, best dressed. Familiarise yourself with airfare costs and have your credit card ready to grab your ticket as soon as you see an unbeatable bargain. The sweetest deals never last long.
Do you have any tips for my flight to Thornton?
Depending on where you're coming from, your flight to Thornton could be as easy as pie or it could drag on forever. Here are some tips that will help you start your next big adventure on the right foot. What to pack in your hand luggage:

  • First and foremost, put in your passport, important documents, cash and medications. Next, you'll want some entertainment to while away the time. A juicy novel and a phone crammed with your favourite movies are good options. If you hope to take a short nap, a comfy neck pillow and some noise-cancelling headphones will also be useful. Finally, squeeze in a few toiletry items to ensure you touchdown looking fresh and raring to go.

Do not pack the following items in your hand luggage:

  • While the list of banned items can differ between air carriers, the general guide to follow is avoid carrying anything sharp, flammable or explosive. This includes things like screwdrivers, pocket knives, spray paint and fireworks. Sports equipment like ski poles, and items that could harm other people, such as guns and swords, aren't allowed in the cabin either.

What to wear on a flight:

  • Choose comfort over style. Prepare for changes in temperature by layering up, and wear flat, enclosed footwear like sneakers.
  • Caused by lengthy periods of inactivity, deep vein thrombosis (DVT) is a blood clotting condition that can affect some passengers during long-distance flights. Reduce the risks by staying hydrated, keeping your lower limbs moving and wearing compression socks to help improve your circulation.

How to get through airport security fast when flying to Thornton?
Being prepared before your flight can make your getaway to Thornton quick and painless. We've compiled some handy hints for a swift journey past security:

  • Be sure to have your travel documents and ID handy. They'll be the first things you'll be asked to show at security.
  • Next up is the X-ray machine. Remove anything metal on you that is likely to set off the scanner's alarm. This includes items like headphones or earphones, as well as heavy coats or jackets. They'll need to be placed on the conveyor belt for screening.
  • All electronic gadgets, including your tablet and phone, are also required to be scanned.
  • Can't travel without your favourite perfume? No problem. As long as the volume is no greater than 3.4 ounces (100 millilitres) and it's stored in a clear zip-close bag, you can keep it with you in your carry-on bag.
  • Slip-on shoes are a sensible footwear choice as you're less likely to have to remove them when going through security. Boots and other heavy shoes are usually subjected to extra screening.
  • Airlines will not allow any sharp objects in your carry-on luggage. If you must bring these kinds of items, check them in.

Flights to Thornton information
Destination airport
Denver Intl.
Destination airport IATA code
DEN
Destination city name
Denver
Return price
€160

Trending flights to Thornton

Prices were available within the past 7 days and start at €81 for one-way flights and €161 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

British Airways
Tue, 3 Mar - Tue, 10 Mar
DUB
Dublin
DEN
Denver
€377 Return, found 19 hours ago
€377
Return
found 19 hours ago
Select British Airways flight, departing Tue, 3 Mar from Dublin to Denver, returning Tue, 10 Mar, priced at €377 found 19 hours ago

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