Southwest AirlinesDepart06:40
Sat, Nov 14HRL → TYS
5h 30m · 2 stops
$271one way, per person
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- Cheapest fare
- $271
- Cheapest month
- November
- Direct flights
- Not recently
- Quickest trip
- 5h 30m
Southwest Airlines · Sat, Nov 14
from $271
Usually 1+ stop
1,700 km
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Cheapest month to fly from Harlingen to Knoxville
Lowest one-way fare per person in each month. Choose a month to see every date.
Cheapest dates in November 2026
The lowest fares we've seen for each day, cheapest first.
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About flights from Harlingen to Knoxville
Harlingen (HRL) and Knoxville (TYS) are about 1,700 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 5h 30m. Over the next few months, one-way fares start from $271, 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 Knoxville?
The cheapest one-way fare we've seen recently is $271 with Southwest Airlines, departing Saturday, November 14, 2026.
What is the cheapest month to fly from Harlingen to Knoxville?
November 2026 currently has the lowest fares, from $271 one way.
Are there direct flights from Harlingen to Knoxville?
We haven't seen direct fares recently, so most journeys include at least one stop.
How long is the flight from Harlingen to Knoxville?
The quickest journey we've seen takes about 5h 30m. Harlingen and Knoxville are around 1,700 km apart.
Which airlines fly from Harlingen to Knoxville?
Recent fares on this route were with Southwest Airlines.
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