Your next trip, last seen at €66
Lowest observedAllegiant Air · Non-stop · One wayWhen to fly
Explore datesMore dates worth a look
Find the dates that work for you
The lowest fare we observed for each month. Open a month to see its days, then pick your outbound and return. A day with no price is one we will search for you.
One-way fare
- Lowest observed
- €66, departing 2 Nov 2026 (Last checked: 21 Oct 2026)One-way fareCheck live prices for this route
- Airlines seen
- United Airlines, Allegiant Air, American Airlines, Delta Air Lines, Frontier Airlines, JetBlue
- Typical journey time
- 19h 12m
About this route
Explore the fares we observed from Appleton to Denver. Prices move often, so pick your dates to see the latest options.
- Route distance
- 1,455 km
- Typical journey time
- 19h 12m
- Alternative airports
- APA
Route-level information; individual journeys vary.
We have not observed non-stop service on this route; the fares shown include at least one stop.
A clearer picture of your fare
Non-stop airlines seen on this route
| Airline | Non-stop days / priced days | Fastest non-stop |
|---|---|---|
| United Airlines | 7 / 85 |
Departure days with a non-stop fare checked in the last 14 days. A carrier listed here had a non-stop fare on at least 3 days; schedules may differ.
Airport to city: straight-line distance
- Appleton International Airport (ATW) → Appleton, city gazetteer reference point (44.2619, -88.4154): ≈ 8 km.
- Denver International Airport (DEN) → Denver, city gazetteer reference point (39.7392, -104.9847): ≈ 30 km.
Approximate distances calculated from coordinates, not road distances or travel times. These airports serve the city; they are not confirmed endpoints of an offer.
Lowest one-way fare we saw per airline
Cheapest airline from Appleton to Denver: Allegiant Air, from €66 (checked 21 Oct 2026).
| Airline | Lowest fare | Priced days |
|---|---|---|
| Allegiant Air | €66Nov 2, 2026 | 58 |
| Frontier Airlines | €142Dec 13, 2026 | 12 |
| United Airlines | €233Dec 16, 2026 | 15 |
One-way fares checked in the last 14 days. An airline listed here had a fare on at least 3 departure days. Each figure is the lowest we saw, not a guaranteed fare. Connecting itineraries are included; the date is the departure day of that fare.
Frequently asked
How much is a flight from Appleton to Denver?
The lowest fare Routavio has observed is €66, found on 21 Oct 2026. Prices move, so read it as a floor rather than a quote.
When is the cheapest month to fly from Appleton to Denver?
In our observations November 2026 is the cheapest month so far, at €66.
Are there direct flights from Appleton to Denver?
Our data holds no non-stop flight from Appleton to Denver. The fares on this page include at least one stop.
Which airlines fly from Appleton to Denver?
Routavio has seen these carriers on the route: United Airlines, Allegiant Air, American Airlines, Delta Air Lines, Frontier Airlines, JetBlue.
How long does the flight from Appleton to Denver take?
Across the 91 fares Routavio observed, the average journey time is 21h 59m, including any stops. Individual departures vary; the fastest observed flight is listed in the route facts above.
Which airlines had non-stop offers on at least 3 departure dates from Appleton to Denver?
For Appleton to Denver, examples of observed one-way non-stop offers checked within the last 14 days: United Airlines (7). Each number counts distinct departure dates, not weekly flights; check current availability in search.
Which airline has the lowest fare from Appleton to Denver?
Cheapest airline from Appleton to Denver: Allegiant Air, from €66 (checked 21 Oct 2026).
How observed prices work, what "No data" means and what a fare includes: Read the flight price guide
Keep exploring
Similar routes
More routes from Appleton
Show all 17 routes →Show fewer ↑
More routes to Denver
Show all 30 routes →Show fewer ↑
Recently observed fares. Prices may change.
Last checked: 29 Oct 2026