Washington to San Juan (IAD-SJU): nonstop flights and who flies them

United Airlines and Frontier Airlines fly nonstop between Washington (IAD) and San Juan (SJU), roughly 14 times a week. The timetable below shows the nonstop scheduled at 3h 50m to 3h 54m for the 1,575 miles.

Schedule last confirmed . Departure times come from 2LNR's schedule data; confirm with the airline before you book.

Updated .

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14
Flights a week, 4-week average
3h 50m to 3h 54m
Scheduled flight time
1,575 mi
Nonstop distance
Free
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Washington to San Juan flight schedule

Scheduled nonstop departures for IAD to SJU starting October 23, 2026, last checked against our schedule feed on October 18, 2026. Airlines retime and cancel flights, so confirm with the airline before you book.

Schedule data dated .

Scheduled nonstop departures from Washington (IAD) to San Juan (SJU)
Date Flight Airline Departs IAD Arrives SJU Duration Aircraft
UA 2021United Airlines08:4012:343h 54mBoeing 737 MAX 8
UA 2021United Airlines08:4012:343h 54mBoeing 737 MAX 8
UA 2021United Airlines09:0012:543h 54mBoeing 737 MAX 9
UA 2025United Airlines17:3221:223h 50mBoeing 737 MAX 8
UA 2021United Airlines08:4012:343h 54mBoeing 737 MAX 8
UA 2025United Airlines17:3221:223h 50mBoeing 737 MAX 8
UA 2021United Airlines08:4012:343h 54mBoeing 737 MAX 8
UA 2025United Airlines17:2921:223h 53mBoeing 737 MAX 9
UA 2021United Airlines08:4012:343h 54mBoeing 737 MAX 8
UA 2025United Airlines17:2921:223h 53mBoeing 737 MAX 9
UA 2021United Airlines08:4012:343h 54mBoeing 737 MAX 8
UA 2025United Airlines17:2921:223h 53mBoeing 737 MAX 9

Showing all 12 scheduled IAD to SJU departures across 7 days with service, starting October 23, 2026. Later dates are on the interactive map.

Departure and arrival times are local at their own airport, so an arrival can fall on a different local date than the departure; the duration column is the true elapsed flying time. A dash means the airline hasn't filed that value in the schedule data we hold. Aircraft are the equipment the airline filed, named where the code pins down one type and shown as the family or the bare code where it doesn't. Swaps can happen up to departure.

See every IAD to SJU date on the interactive map

Aircraft on the Washington to San Juan nonstop

United Airlines flies the departures in the schedule table on this page with the Boeing 737 MAX 8 and the Boeing 737 MAX 9. Each linked aircraft page shows where that airline schedules it. Airlines can swap aircraft up to departure.

The full IAD to SJU nonstop schedule

This page carries the full IAD to SJU nonstop schedule, who operates each departure and how often it runs; the reverse direction is linked below.

See the schedule

Who operates each IAD to SJU nonstop and how often it runs, from 2LNR's schedule data.

Plan on the map

See IAD to SJU on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Washington to San Juan nonstop

Carriers operating IAD to SJU nonstop in the current schedule.

See IAD to SJU on the interactive map →

Frequently asked questions about IAD to SJU

How long is the flight from Washington (IAD) to San Juan (SJU)?
Scheduled flight times from Washington (IAD) to San Juan (SJU) run from 3h 50m to 3h 54m across the departures in the schedule table on this page. The nonstop covers about 1,575 miles, and airlines adjust scheduled times by season, so confirm with the airline before you book.
Which airlines fly nonstop from IAD to SJU?
United Airlines and Frontier Airlines fly IAD to SJU nonstop. 2LNR doesn't show award or upgrade space for any of them on IAD to SJU, so this page carries the schedule rather than a space claim.
How many flights a week are there from IAD to SJU?
About 14 nonstop flights a week run between Washington (IAD) and San Juan (SJU) in the current schedule, operated by United Airlines and Frontier Airlines. Frequency shifts by season, and the schedule table on this page shows what is scheduled next.
What time do flights from IAD to SJU depart?
Scheduled IAD to SJU nonstops in the next 7 days with service leave between 08:40 and 17:32, local time at Washington. The schedule table on this page lists every departure by date, with its arrival time and aircraft.
Which flights operate IAD to SJU nonstop?
In the schedule table on this page, IAD to SJU nonstops fly as UA 2021 and UA 2025 on United Airlines. The table lists each departure by date with its times and aircraft.
Does 2LNR show upgrade or award space on IAD to SJU?
Not on this route: 2LNR doesn't show award or upgrade space for any airline flying IAD to SJU. The page carries the full IAD to SJU nonstop schedule and who flies each departure, and the reverse direction is linked below.

See the full IAD to SJU nonstop schedule

Every scheduled departure on this route, with who flies it. 2LNR shows upgrade and award space by date on the carriers it tracks, the next 14 days free on every product and the full horizon on Pro.

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