Cheap flights from Denver to Harlingen

One-way fares from $242 · DEN → HRL · prices found by travellers in the last 48 hours

Compare all dates Harlingen → Denver
Cheapest fare
$242

American Airlines · Fri, Nov 13

Cheapest month
November

from $242

Direct flights
Not recently

Usually 1+ stop

Quickest trip
3h 53m

1,650 km

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Cheapest month to fly from Denver to Harlingen

Lowest one-way fare per person in each month. Choose a month to see every date.

  1. November 2026 Cheapest $242

Cheapest dates in November 2026

The lowest fares we've seen for each day, cheapest first.

American Airlines
Depart05:30 Fri, Nov 13DEN → HRL 3h 54m · 1 stop
$242one way, per person
View deal
See every date in November 2026 →

Plan the rest of your trip to Harlingen

Where to stay, what to do and getting around, from our travel partners.

Where to stay

Hotels in HarlingenCompare places to stay on Booking.com Find hotels →

Things to do

Things to do in HarlingenTours, attractions and day trips on Klook Explore →

Getting around

Airport transfer in HarlingenPre-book a driver to meet you at arrivals, with Kiwitaxi Book a transfer → Car hire in HarlingenCompare rental cars from major brands on EconomyBookings Compare cars →

About flights from Denver to Harlingen

Denver (DEN) and Harlingen (HRL) are about 1,650 km apart. We haven't seen direct fares on this route recently, so expect at least one stop; the quickest journey we've seen takes about 3h 53m. Over the next few months, one-way fares start from $242, and November 2026 is currently the cheapest month to fly.

These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.

Frequently asked questions

How much is a flight from Denver to Harlingen?

The cheapest one-way fare we've seen recently is $242 with American Airlines, departing Friday, November 13, 2026.

What is the cheapest month to fly from Denver to Harlingen?

November 2026 currently has the lowest fares, from $242 one way.

Are there direct flights from Denver to Harlingen?

We haven't seen direct fares recently, so most journeys include at least one stop.

How long is the flight from Denver to Harlingen?

The quickest journey we've seen takes about 3h 53m. Denver and Harlingen are around 1,650 km apart.

Which airlines fly from Denver to Harlingen?

Recent fares on this route were with American Airlines.

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