Cheap flights from Jacksonville to Denver from $234 JAX → DEN
Jacksonville International Airport (JAX) → Denver International Airport (DEN)
The cheapest one-way found recently is $234 with Allegiant Air, 20 Dec, found yesterday.
- Cheapest one-way found recently
- $234, found yesterday
- Cheapest month to fly
- December 2026, one-way fares from $131 found in the last 7 days
One-way
The cheapest one-way fare on each of 3 departure dates is usually $183 to $265.
Cheapest one-way found recently
$234
20 Dec · Allegiant Air
Jacksonville International Airport (JAX) → Denver International Airport (DEN)
Leaves 9:09 a.m. · 13 h 21 min trip
2 stops
found yesterday
Cheapest nonstop one-way
None seen yet.
Found recently, and the cheapest we hold
$234 20 Decfound yesterdayOpen this trip
$131 21 Decfound 2 days agoOpen this trip
What have prices looked like?
On 12 Nov, the cheapest one-way we saw was $131.
At $234, the cheapest one-way found recently is above that range.
One day is a short history, so treat this as an early guide.
Those were the prices on those days, not today's.
Is this a good one-way price?
Compared with the cheapest one-way fare on each of 3 departure dates from 14 Nov to 21 Dec, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
Yes. Among one-way fares leaving within 3 days of 20 Dec, 21 Dec costs $131: $103 less than the cheapest found recently.
Frontier Airlines · Jacksonville International Airport (JAX) → Denver International Airport (DEN) · 1 stop · found 2 days ago
Every date we hold
4 fares on 3 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 14 Nov | $296 | Breeze Airways | Jacksonville International Airport (JAX) → Denver International Airport (DEN) | 1 stop | found yesterday | Open this trip |
| 20 Dec | $234 | Allegiant Air | Jacksonville International Airport (JAX) → Denver International Airport (DEN) | 2 stops | found yesterday | Open this trip |
| 21 Dec | $131 | Frontier Airlines | Jacksonville International Airport (JAX) → Denver International Airport (DEN) | 1 stop | found 2 days ago | Open this trip |
Which month looks cheapest?
December 2026 is the cheapest month — from $131.
Airlines on the cheapest dates: Breeze Airways, Allegiant Air, Frontier Airlines.
Premium cabin fares from Jacksonville to Denver
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 20 Dec in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Jacksonville to Denver?
One-way
Not enough history yet: we have one day of one-way prices, 12 Nov, and compare booking times once 3 booking ranges have 7 days each.
Live price for these dates
The cheapest one-way found recently is for 20 Dec. A live search on this page shows what those dates cost now, for one adult in economy.
Questions about this trip
How much is a one-way flight from Jacksonville to Denver?
The cheapest one-way found recently is $234 with Allegiant Air, 20 Dec, found yesterday. The cheapest one-way we hold, of any age, is $131 with Frontier Airlines, 21 Dec, found 2 days ago. The cheapest one-way fare on each of 3 departure dates is usually $183 to $265.
What is the cheapest month to fly from Jacksonville to Denver?
December 2026 is the cheapest month for a one-way, from $131, 21 Dec, found 2 days ago.
How long is the flight from Jacksonville to Denver?
The cheapest one-way found recently, with Allegiant Air on 20 Dec, takes 13 h 21 min with 2 stops.
Which airlines have the cheapest flights from Jacksonville to Denver?
Between 14 Nov and 21 Dec, Breeze Airways has the cheapest one-way on 1 of the 3 departure dates we hold, Allegiant Air on 1 and Frontier Airlines on 1.
Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work