Cheap Flights from Jacksonville (JAX) to Denver (DEN)

Compare Jacksonville International to Denver International flight deals

Find the cheapest month or even day of the year to fly to Denver International

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Flight deals from Jacksonville International to Denver International

Looking for a cheap last-minute deal or the best return flight from Jacksonville International to Denver International? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Jacksonville International to Denver International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Jacksonville International to Denver International flights are currently cheapest in November.

Direct flights from Jacksonville International to Denver International

Jacksonville International to Denver International: Alternative routes

Compare routes from Jacksonville International to Denver below. You may find an airport to fly into that's cheaper, faster, or easier than Denver International.

Jacksonville to Denver: Flight information

The things to know before you go.
Cheapest flight found$226
Cheapest month to flyNovember
Average flight time3 hrs, 48 mins
Most popular airlineUnited
Average flights per week16

Finding cheap flights from Jacksonville International to Denver International: Frequently asked questions

The best price we found for a return flight from Jacksonville International to Denver International is $226. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
3 hours and 48 minutes is the average flight time from Jacksonville International to Denver International.
United and Southwest Airlines fly direct from Jacksonville International to Denver International.
As of July 2025, there are 16 flights per week flying from Jacksonville International to Denver International.
The cheapest month to fly from Jacksonville International to Denver International is usually November.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Jacksonville International Airport to Denver International Airport on Saturday, 8 November 2025.
Yes – the average flight time is 3 hours and 48 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Denver International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Denver is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, United offers the cheapest flight tickets to Denver International.

Flying from Jacksonville International Airport (JAX) to Denver International Airport (DEN): what you need to know

  • Around 3 hours 50 minutes is how long you can expect to be in the air on a direct flight from Jacksonville International Airport to Denver International Airport.

  • Denver's timezone is UTC-6, making Denver two hours behind Jacksonville.

  • Flights from JAX to DEN start from 06:00 — the earliest with Southwest Airlines. The last service of the day is at 18:15 with Southwest Airlines. Overall, you can choose from 16 weekly Jacksonville International Airport to Denver International Airport flights.

  • Arriving two hours before an international flight and one hour ahead of a domestic departure are golden rules for stress-free travel. Make sure you're at the airport on time to catch your JAX to DEN flight.

  • Travelling during a peak time like July? Public holidays and other popular periods can mean longer queues at airport checkpoints. Be extra cautious and get there up to four hours ahead of international flights and two hours before domestic departures.

  • United Airlines offers direct flights from Jacksonville International Airport to Denver International Airport. Book with this popular airline, then get ready to check out the sights in Denver — and maybe even more of United States if your schedule allows.

  • United Airlines is the airline most travellers choose to fly with on this route.

  • Southwest Airlines leads the way as the most punctual carrier for JAX to DEN flights, with 86.89% of its services landing on schedule.

  • We make it easy to book a flight with a stopover. To see your options for tickets from Jacksonville International Airport to Denver International Airport, deselect 'Direct flights only.' Then, choose a flight with a stop long enough to explore the city of your choice. Top stopovers between JAX and DEN include:

    • Hartsfield-Jackson Atlanta International Airport

    • Nashville International Airport

    • William P. Hobby Airport

How to find the cheapest flights from Jacksonville International Airport (JAX) to Denver International Airport (DEN)

  • Right now, $128 is the cheapest price we've seen for a one-way Jacksonville International Airport to Denver International Airport flight. The best price for a return plane ticket is $226. Keep in mind that fares can change due to availability at the time of booking.

  • Score cheap tickets from JAX to DEN by booking seven months ahead. According to our research, that's the sweet spot for finding the biggest deals.

  • June is the cheapest month for flights from Jacksonville International Airport to Denver International Airport. If you need to travel during a different time of year, the 'Whole month' tool will show you the lowest airfares for each month.

  • Spend less time searching for cheap flights from JAX to DEN by setting up a Price Alert. You'll get an email or push notification on the app when a special offer becomes available.

  • Tailor your flights with filters. Pick your ideal departure and arrival times, airlines and total journey duration. You can also sort results by 'Cheapest,' 'Best' or 'Fastest' flights from Jacksonville International Airport to Denver International Airport.

Handy information about Jacksonville International Airport (JAX)

  • JAX is located at 2400 Yankee Clipper Drive.

  • Jacksonville International Airport gets top marks for its on-time performance. 80.42% of flights that take off from JAX reach their destination on time.

  • To reach Jacksonville International Airport from central Jacksonville, it'll take about 15 minutes if you're planning to drive. Of course, this depends on traffic conditions. It's approximately 23 kilometres from the airport to the city centre.

  • Taking public transport? Expect a trip time of around 1 hour 20 minutes.

  • Searching for a convenient hotel near JAX? If you've booked an early flight from Jacksonville International Airport to Denver International Airport, these stays will put you moments from your check-in counter:

Arriving at Denver International Airport (DEN)

  • Get off your Jacksonville International Airport to Denver International Airport flight and be relaxing in your hotel bed shortly after. If you need a convenient option that's not too far from DEN, make your way to Baymont by Wyndham Denver International Airport.

  • Grab a Denver International Airport rental car and explore Denver and beyond with your own wheels. Routes Car Rentals, Dollar and Budget are top providers you can book with here.

  • To get the best deal, book your ride from Denver International Airport about one week in advance.

Getting from Denver International Airport (DEN) to central Denver

  • You'll find DEN at 8500 Pena Boulevard.

  • Denver International Airport to the centre of Denver has a drive time of around 35 minutes. It's approximately 40 kilometres away.

  • It typically takes 1 hour 30 minutes to get there using public transport.

When to fly to Denver International Airport (DEN)

  • It's time to choose your trip dates for your flight from Jacksonville International Airport to Denver International Airport. July is the busiest month to head to Denver. If you'd like a more laid-back vibe, go in April.

  • When booking your flight from Jacksonville International Airport to Denver International Airport, consider the type of weather you enjoy. July is the warmest month in Denver, with temperatures ranging from 14ºC (57ºF) to 32ºC (90ºF).

  • January has average temperatures of between -9ºC (16ºF) and 7ºC (45ºF). Look for cheap tickets from JAX to DEN around that time if you'd rather travel in cooler conditions.

Explore more of United States

  • Colorado Springs is just one of the many places in United States waiting to be discovered after you've experienced Denver. Around 105 kilometres away to the south, its top attractions include US Northern Command (USNORTHCOM) / North American Aerospace Defence Command (NORAD) Headquarters, Cheyenne Mountain Air Force Station and National Strength and Conditioning Association (NSCA).

  • Around 13 kilometres east of Denver, Aurora is another favourite stop in United States. Experience major highlights starting with Magellan's Travel Solutions and Gear, The Fairways at Lowry and Retired Enlisted Association Inc.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.