Cheap flights from Harlingen to Ontario

One-way fares from $277 · HRL → ONT · prices found by travellers in the last 48 hours

Compare all dates Ontario → Harlingen
Cheapest fare
$277

Southwest Airlines · Fri, Nov 13

Cheapest month
November

from $277

Direct flights
Not recently

Usually 1+ stop

Quickest trip
4h 25m

2,100 km

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Cheapest month to fly from Harlingen to Ontario

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

  1. November 2026 Cheapest $277

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

Where to stay

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Things to do

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Getting around

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About flights from Harlingen to Ontario

Harlingen (HRL) and Ontario (ONT) are about 2,100 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 25m. Over the next few months, one-way fares start from $277, 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 Ontario?

The cheapest one-way fare we've seen recently is $277 with Southwest Airlines, departing Friday, November 13, 2026.

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

November 2026 currently has the lowest fares, from $277 one way.

Are there direct flights from Harlingen to Ontario?

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

How long is the flight from Harlingen to Ontario?

The quickest journey we've seen takes about 4h 25m. Harlingen and Ontario are around 2,100 km apart.

Which airlines fly from Harlingen to Ontario?

Recent fares on this route were with Southwest Airlines.

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