Orlando to San Juan

Between Orlando and San Juan, 2.0 million passengers flew nonstop in 2025, on 12 thousand flights of about 1,189 miles and 2.5 hours in the air. The average passenger accounted for about 138 kg of CO2 from the fuel burned, from 118 kg on Frontier Airlines to 164 kg on JetBlue.

138 kgCO2 per passenger, average
1,189 milesabout 2.5 hours in the air
2.0 millionpassengers in 2025
89%of seats filled

CO2 per passenger, airline by airline

Kilograms of CO2 per passenger, one way, 2025. Fuel burned only. Less is better.

Orlando to San Juan by airline, 2025

Airline	Share of passengers	Flights (thousands)	Main aircraft	Seats per flight	Seats filled	kg CO2 per passenger
Southwest Airlines	33%	4.2	Boeing 737 MAX 8, Boeing 737-800	172	91%	133
JetBlue	31%	4.2	Airbus A320-200, Airbus A321	168	86%	164
Frontier Airlines	23%	2.4	Airbus A320neo, Airbus A321neo	213	88%	118
Spirit Airlines	13%	1.5	Airbus A320-200, Airbus A320neo	190	92%	125

What explains the differences

It's number 71 of the 100 busiest city pairs by passengers, and number 1 for the lowest CO2 per mile flown (0.12 kg per passenger-mile, number 1 being the lowest). A typical route of 1,189 miles in this set comes out at about 175 kg, so this one is 21% below it.

The airlines on this route differ by 39% per passenger. Frontier Airlines burned 2,257 gallons per flight and 186 passengers on each, and JetBlue 2,430 gallons and 145 passengers. Fuel burned per flight explains about 23% of the gap and the number of passengers on each flight the other 77%. Frontier Airlines flew 88% full here against 86% for JetBlue, flying mostly Airbus A320neo against Airbus A320-200.

For comparison, the EPA default factor for a flight of this length (0.129 kg per passenger-mile) would give 153 kg. The EPA figure is a national average for flights of that length. The measured figure for this route is 10.0% lower.

2019 compared with 2025

In 2019 the route carried 1.5 million passengers on 10 thousand flights. In 2025 it carried 2.0 million, up 32%, on 12 thousand flights, up 18%. The average flight had 165 seats then and 181 now, and 87% of them were filled against 89%.

CO2 per passenger was 157 kg in 2019 and 138 kg in 2025, down 12.2%. Fuel burned per flight was down 2.2% (2,328 gallons to 2,275) and passengers per flight were up 11.3% (144 to 161). The distance flown was about the same (1,189 miles then, 1,189 now).

JetBlue had the most passengers in 2019 (34%) and Southwest Airlines in 2025 (33%). Frontier Airlines gained the most share, 14% to 23%. Spirit Airlines lost the most, 22% to 13%.

Airline by airline, JetBlue went from 191 kg to 164 kg per passenger (138 seats per flight to 168, main aircraft Airbus A320-200 in both years); Frontier Airlines went from 126 kg to 118 kg per passenger (225 seats per flight to 213, main aircraft Airbus A321 then and Airbus A320neo now).

Orlando to San Juan, 2019 and 2025

Measure	2019	2025
Passengers (thousands)	1,503	1,982
Flights (thousands)	10.4	12.3
Seats filled	87%	89%
Gallons of fuel per flight	2,328	2,275
kg CO2 per passenger	157	138

Kilograms of CO2 per passenger on the airlines that flew the route in both years. 2019 figures use that year's filings and estimated aircraft fuel rates, with type-average replacements for missing or outlying filings as described in the methodology. Less is better.

Orlando to San Juan and back: time in the air

Flights from San Juan to Orlando spent 160 minutes in the air on average in 2025, against 146 minutes from Orlando to San Juan: 14 minutes longer, 10% more. That's the westbound direction, into the prevailing west-to-east winds, which at flight levels often blow at well over 50 miles an hour.

At this route's average burn of about 894 gallons per flight hour, those extra minutes cost about 213 gallons per flight, which is about 1.3 gallons or 13 kg of CO2 for each passenger on the slower direction. The route figure above averages both directions.

Time in the air by direction, 2025

Direction	Average minutes in the air	Flights
San Juan to Orlando	160.0	6,171
Orlando to San Juan	145.7	6,160

Fly or drive

There's no road between Orlando and San Juan, so the choice is a flight or a boat, and a flight is the only practical option for most trips.

Flights are listed under the airline that operates them, so regional flying appears under the regional. How the CO2 and drive figures are worked out is in the methodology.

Routes with shared cities or nearby CO2 per mile

New York to Orlando141 kg CO2 per passenger over 947 miles Washington, DC to Orlando124 kg CO2 per passenger over 770 miles Atlanta to Orlando71 kg CO2 per passenger over 404 miles Chicago to Orlando137 kg CO2 per passenger over 1,000 miles San Francisco to Honolulu300 kg CO2 per passenger over 2,404 miles Los Angeles to Miami292 kg CO2 per passenger over 2,342 miles

Airports on this route: Orlando International Airport.

Airport and airline references

Source: US Bureau of Transportation Statistics (BTS), T-100 traffic and Schedule T-2 fuel filings; US EPA transport emission factors. See the methodology.

See all routes, or how the airlines compare overall on the airline pages.