Frontier AirlinesDepart06:00
Fri, Dec 18DFW → SJU
5h 44m · 1 stop
$178one way, per person
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- Cheapest fare
- $178
- Cheapest month
- December
- Direct flights
- Not recently
- Quickest trip
- 5h 44m
Frontier Airlines · Fri, Dec 18
from $178
Usually 1+ stop
3,450 km
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Cheapest month to fly from Dallas to San Juan
Lowest one-way fare per person in each month. Choose a month to see every date.
Cheapest dates in December 2026
The lowest fares we've seen for each day, cheapest first.
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About flights from Dallas to San Juan
Dallas (DFW) and San Juan (SJU) are about 3,450 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 44m. Over the next few months, one-way fares start from $178, and December 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 Dallas to San Juan?
The cheapest one-way fare we've seen recently is $178 with Frontier Airlines, departing Friday, December 18, 2026.
What is the cheapest month to fly from Dallas to San Juan?
December 2026 currently has the lowest fares, from $178 one way.
Are there direct flights from Dallas to San Juan?
We haven't seen direct fares recently, so most journeys include at least one stop.
How long is the flight from Dallas to San Juan?
The quickest journey we've seen takes about 5h 44m. Dallas and San Juan are around 3,450 km apart.
Which airlines fly from Dallas to San Juan?
Recent fares on this route were with Frontier Airlines.
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