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

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      Travellers and cabin class, 1 Adult, Economy
      Southwest Airlines
      United

      Compare Jacksonville International to Denver International flight deals

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

      Book the best Denver International fare with no extra fees

      Flight deals from Jacksonville International to Denver International

      Looking for a cheap last-minute deal or the best return flight from Jacksonville International Airport to Denver International Airport? If you want to travel next month, return fares start from $236. Find the lowest prices on one-way and return tickets right here.
      Denver.$236 per passenger.Departing Mon, 26 Oct, returning Wed, 28 Oct.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Jacksonville International on Mon, 26 Oct, arriving in Denver International.Inbound indirect flight with Frontier Airlines, departs from Denver International on Wed, 28 Oct, arriving in Jacksonville International.Price includes taxes and charges.From $236, select.
      Denver.$294 per passenger.Departing Fri, 13 Nov, returning Sun, 15 Nov.Return flight with Frontier Airlines and Allegiant Air.Outbound indirect flight with Frontier Airlines, departs from Jacksonville International on Fri, 13 Nov, arriving in Denver International.Inbound indirect flight with Allegiant Air, departs from Denver International on Sun, 15 Nov, arriving in Jacksonville International.Price includes taxes and charges.From $294, select.
      Denver.$341 per passenger.Departing Fri, 4 Dec, returning Tue, 8 Dec.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Jacksonville International on Fri, 4 Dec, arriving in Denver International.Inbound indirect flight with Frontier Airlines, departs from Denver International on Tue, 8 Dec, arriving in Jacksonville International.Price includes taxes and charges.From $341, select.
      Denver.$357 per passenger.Departing Wed, 3 Feb, returning Tue, 9 Feb.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Jacksonville International on Wed, 3 Feb, arriving in Denver International.Inbound direct flight with Southwest Airlines departs from Denver International on Tue, 9 Feb, arriving in Jacksonville International.Price includes taxes and charges.From $357, select.
      Denver.$358 per passenger.Departing Thu, 21 Jan, returning Mon, 25 Jan.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Jacksonville International on Thu, 21 Jan, arriving in Denver International.Inbound direct flight with Southwest Airlines departs from Denver International on Mon, 25 Jan, arriving in Jacksonville International.Price includes taxes and charges.From $358, select.
      Denver.$358 per passenger.Departing Tue, 3 Nov, returning Tue, 10 Nov.Return flight with United.Outbound direct flight with United departs from Jacksonville International on Tue, 3 Nov, arriving in Denver International.Inbound direct flight with United departs from Denver International on Tue, 10 Nov, arriving in Jacksonville International.Price includes taxes and charges.From $358, select.
      Denver.$358 per passenger.Departing Sat, 30 Jan, returning Sat, 6 Feb.Return flight with United.Outbound direct flight with United departs from Jacksonville International on Sat, 30 Jan, arriving in Denver International.Inbound direct flight with United departs from Denver International on Sat, 6 Feb, arriving in Jacksonville International.Price includes taxes and charges.From $358, select.
      Denver.$371 per passenger.Departing Wed, 30 Sep, returning Fri, 2 Oct.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Jacksonville International on Wed, 30 Sep, arriving in Denver International.Inbound indirect flight with Frontier Airlines, departs from Denver International on Fri, 2 Oct, arriving in Jacksonville International.Price includes taxes and charges.From $371, select.
      Denver.$371 per passenger.Departing Mon, 19 Oct, returning Tue, 10 Nov.Return flight with United.Outbound indirect flight with United, departs from Jacksonville International on Mon, 19 Oct, arriving in Denver International.Inbound indirect flight with United, departs from Denver International on Tue, 10 Nov, arriving in Jacksonville International.Price includes taxes and charges.From $371, select.
      Denver.$389 per passenger.Departing Wed, 30 Sep, returning Wed, 7 Oct.Return flight with United.Outbound direct flight with United departs from Jacksonville International on Wed, 30 Sep, arriving in Denver International.Inbound direct flight with United departs from Denver International on Wed, 7 Oct, arriving in Jacksonville International.Price includes taxes and charges.From $389, select.
      Denver.$404 per passenger.Departing Fri, 2 Oct, returning Tue, 6 Oct.Return flight with United.Outbound direct flight with United departs from Jacksonville International on Fri, 2 Oct, arriving in Denver International.Inbound direct flight with United departs from Denver International on Tue, 6 Oct, arriving in Jacksonville International.Price includes taxes and charges.From $404, select.
      Denver.$405 per passenger.Departing Thu, 24 Sep, returning Mon, 28 Sep.Return flight with United.Outbound indirect flight with United, departs from Jacksonville International on Thu, 24 Sep, arriving in Denver International.Inbound indirect flight with United, departs from Denver International on Mon, 28 Sep, arriving in Jacksonville International.Price includes taxes and charges.From $405, select.
      Denver.$419 per passenger.Departing Wed, 30 Dec, returning Wed, 6 Jan.Return flight with United.Outbound indirect flight with United, departs from Jacksonville International on Wed, 30 Dec, arriving in Denver International.Inbound indirect flight with United, departs from Denver International on Wed, 6 Jan, arriving in Jacksonville International.Price includes taxes and charges.From $419, select.
      Denver.$461 per passenger.Departing Tue, 2 Mar, returning Tue, 9 Mar.Return flight with Delta.Outbound indirect flight with Delta, departs from Jacksonville International on Tue, 2 Mar, arriving in Denver International.Inbound indirect flight with Delta, departs from Denver International on Tue, 9 Mar, arriving in Jacksonville International.Price includes taxes and charges.From $461, select.
      Denver.$511 per passenger.Departing Sat, 5 Dec, returning Wed, 9 Dec.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Jacksonville International on Sat, 5 Dec, arriving in Denver International.Inbound direct flight with Southwest Airlines departs from Denver International on Wed, 9 Dec, arriving in Jacksonville International.Price includes taxes and charges.From $511, select.
      Denver.$511 per passenger.Departing Fri, 9 Apr, returning Fri, 23 Apr.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Jacksonville International on Fri, 9 Apr, arriving in Denver International.Inbound direct flight with Southwest Airlines departs from Denver International on Fri, 23 Apr, arriving in Jacksonville International.Price includes taxes and charges.From $511, select.
      How did we find these deals? The deals you see here are the lowest prices for flight tickets from Jacksonville International to Denver International found in the last 4 days, and are subject to change and availability.

      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 October.
      Sep
      from $405
      Oct
      from $236
      Nov
      from $294
      Dec
      from $341
      Jan
      from $358
      Feb
      from $357
      Mar
      from $461
      Apr
      from $511
      May
      from $524
      Jun
      from $538
      Jul
      Find prices
      Aug
      Find prices

      Direct flights from Jacksonville International to Denver International

      Southwest Airlines
      United

      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.

      Denver International

      30km from central Denver
      ClosestCheapest
      from $236
      Search flights

      Jacksonville to Denver: Flight information

      The things to know before you go.
      Cheapest flight found$236
      Cheapest month to flyOctober
      Average flight time3 hrs, 52 mins
      Most popular airlineSouthwest Airlines
      Average flights per week22

      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 $236. 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 52 minutes is the average flight time from Jacksonville International to Denver International.
      Southwest Airlines and United fly direct from Jacksonville International to Denver International.
      As of September 2026, there are 22 flights per week flying from Jacksonville International to Denver International.
      The cheapest month to fly from Jacksonville International to Denver International is usually October.
      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 Monday, 26 October 2026.
      Yes – the average flight time is 3 hours and 52 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, Frontier Airlines and Southwest Airlines offer the cheapest flight tickets to Denver International.

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

      • Around 3 hours 50 minutes is how long you'll be travelling on a direct flight from Jacksonville International Airport to Denver International Airport.

      • The timezone in Denver is UTC-7, which is two hours behind Jacksonville.

      • Every week, there are 18 Jacksonville International Airport to Denver International Airport flights. If you want to jet off as soon as possible, select the 05:00 Southwest Airlines flight. If you'd rather make the most of your day before flying, the last flight is at 17:55 with Southwest Airlines.

      • Arriving two hours before an international flight and one hour ahead of a domestic departure are travel rules to live by. Be at the airport on time to catch your JAX to DEN flight.

      • During popular months such as July, you'll want to get to the airport earlier. Plan to arrive two hours before domestic departures and four hours ahead for international flights whenever you're travelling during a high season in general.

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

      • United tops the list for bookings on this route.

      • United is the most punctual carrier offering JAX to DEN flights. A dependable 87.5% of its departures on this route land as scheduled.

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

        • Atlanta Hartsfield-Jackson Airport

        • Nashville Airport

        • Houston Hobby Airport

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

      • The lowest price we've found for a one-way Jacksonville International Airport to Denver International Airport flight is $111. A round-trip plane ticket right now is $236. Depending on the availability and when you book, these fares may change.

      • Book one month before you want to fly. After crunching the numbers on our calendar, this is how far you'll want to book ahead to find cheap tickets from JAX to DEN.

      • 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 prices across every month.

      • Cut down on the time spent looking for cheap flights from JAX to DEN by setting up a Price Alert. We'll send you an email or notification on the app when a special offer becomes available.

      • Choose your ideal departure and arrival times, airlines and number of stops with the filters. Or sort your results by 'Cheapest' to get the best deals on flights from Jacksonville International Airport to Denver International Airport.

      Handy information about Jacksonville International Airport (JAX)

      • JAX is located at 2400 Yankee Clipper Drive.

      • 81% of flights leaving Jacksonville International Airport touch down at their destination as planned. With its dependable on-time performance, delays are unlikely when taking off from JAX.

      • Central Jacksonville to Jacksonville International Airport is around 29 kilometres. Depending on traffic, it'll take you about 25 minutes to get there if you're catching a taxi, ride-sharing or driving.

      • The journey when using public transport takes roughly 1 hour 15 minutes.

      • Searching for a convenient hotel near JAX? If you're boarding an early flight from Jacksonville International Airport to Denver International Airport, these stays will have you moments from your departure gate:

      Arriving at Denver International Airport (DEN)

      • After your Jacksonville International Airport to Denver International Airport flight has arrived, kick back and relax at a nearby hotel. Baymont by Wyndham Denver International Airport is a great option that's not too far from DEN.

      • Go wherever you want, whenever you want with a Denver International Airport rental car. Pick up your wheels from Routes Car Rentals, Dollar or Budget and experience more of Denver and beyond.

      • Reserving your vehicle from Denver International Airport around one week ahead increases your chances of getting a good deal.

      Getting from Denver International Airport (DEN) to central Denver

      • The street address for DEN is 8500 Pena Boulevard.

      • Denver International Airport is approximately 40 kilometres from the centre of Denver. The drive time takes around 35 minutes.

      • It takes around 35 minutes if you're travelling on public transport.

      When to fly to Denver International Airport (DEN)

      • The quietest month for a flight from Jacksonville International Airport to Denver International Airport is January, while July is the most popular. Choose the ideal time to go to Denver based on whether you prefer a more relaxed vibe or a faster pace.

      • Book your flight from Jacksonville International Airport to Denver International Airport for July if you want to visit Denver during its warmest month. You can expect temperatures of between 14ºC (57ºF) and 32ºC (90ºF).

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

      Explore more of the United States

      • You've seen Denver, now it's time to explore other corners of the United States. Travel around 105 kilometres south to Colorado Springs to check off its top sights. From Garden of the Gods to Pikes Peak Region Attractions and Red Rock Canyon, there's plenty to keep you on the go.

      • Aurora is another favourite destination in the United States and is around 13 kilometres east of Denver. No trip is complete without experiencing Plains Conservation Centre, DeLaney Homestead Historic District and Aircraft viewing.

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      Plan the rest of your trip from Jacksonville to Denver

      Prices shown on this page are estimated lowest prices only. Found in the last 12 days.