Cheap flights from Harlingen to Denver

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

Compare all dates Denver → Harlingen
Cheapest fare
$242

United Airlines · Fri, Nov 13

Cheapest month
November

from $242

Direct flights
Not recently

Usually 1+ stop

Quickest trip
4h 03m

1,650 km

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Cheapest month to fly from Harlingen to Denver

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.

United Airlines
Depart13:59 Fri, Nov 13HRL → DEN 4h 11m · 1 stop
$242one way, per person
View deal
United Airlines
Depart17:25 Thu, Nov 12HRL → DEN 4h 03m · 1 stop
$243one way, per person
View deal
See every date in November 2026 →

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Getting around

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About flights from Harlingen to Denver

Harlingen (HRL) and Denver (DEN) 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 4h 03m. 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 Harlingen to Denver?

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

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

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

Are there direct flights from Harlingen to Denver?

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

How long is the flight from Harlingen to Denver?

The quickest journey we've seen takes about 4h 03m. Harlingen and Denver are around 1,650 km apart.

Which airlines fly from Harlingen to Denver?

Recent fares on this route were with United Airlines.

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