--- title: "Washington to San Juan flights: who flies IAD-SJU" description: "United Airlines and Frontier Airlines fly nonstop from IAD to SJU, about 14 flights a week, covering 1,575 miles. See the full timetable and who flies it on 2LNR." canonical: "https://2lnr.com/routes/iad-sju" url: "https://2lnr.com/routes/iad-sju.md" date_modified: "2026-10-18T05:10:47Z" --- # 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 October 18, 2026. Departure times come from 2LNR's schedule data; confirm with the airline before you book. Updated October 23, 2026. See IAD to SJU on the interactive map [Get started free](https://2lnr.com/login) 14 Flights a week, 4-week average 3h 50m to 3h 54m Scheduled flight time 1,575 mi Nonstop distance Free To get started ## 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. Scheduled nonstop departures from Washington (IAD) to San Juan (SJU) | Date | Flight | Airline | Departs IAD | Arrives SJU | Duration | Aircraft | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | Fri, Oct 23 | UA 2021 | United Airlines | 08:40 | 12:34 | 3h 54m | [Boeing 737 MAX 8](https://2lnr.com/seatmaps/ua/737-max-8.md) | | Sat, Oct 24 | UA 2021 | United Airlines | 08:40 | 12:34 | 3h 54m | Boeing 737 MAX 8 | | Sun, Oct 25 | UA 2021 | United Airlines | 09:00 | 12:54 | 3h 54m | [Boeing 737 MAX 9](https://2lnr.com/seatmaps/ua/737-max-9.md) | | Sun, Oct 25 | UA 2025 | United Airlines | 17:32 | 21:22 | 3h 50m | Boeing 737 MAX 8 | | Mon, Oct 26 | UA 2021 | United Airlines | 08:40 | 12:34 | 3h 54m | Boeing 737 MAX 8 | | Mon, Oct 26 | UA 2025 | United Airlines | 17:32 | 21:22 | 3h 50m | Boeing 737 MAX 8 | | Tue, Oct 27 | UA 2021 | United Airlines | 08:40 | 12:34 | 3h 54m | Boeing 737 MAX 8 | | Tue, Oct 27 | UA 2025 | United Airlines | 17:29 | 21:22 | 3h 53m | Boeing 737 MAX 9 | | Wed, Oct 28 | UA 2021 | United Airlines | 08:40 | 12:34 | 3h 54m | Boeing 737 MAX 8 | | Wed, Oct 28 | UA 2025 | United Airlines | 17:29 | 21:22 | 3h 53m | Boeing 737 MAX 9 | | Thu, Oct 29 | UA 2021 | United Airlines | 08:40 | 12:34 | 3h 54m | Boeing 737 MAX 8 | | Thu, Oct 29 | UA 2025 | United Airlines | 17:29 | 21:22 | 3h 53m | Boeing 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](https://2lnr.com/seatmaps/ua/737-max-8.md) and the [Boeing 737 MAX 9](https://2lnr.com/seatmaps/ua/737-max-9.md). 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. - [United Airlines (UA) route map](https://2lnr.com/routes/airlines/ua.md)\ [The aircraft UA flies](https://2lnr.com/seatmaps/ua.md) - [Frontier Airlines (F9) route map](https://2lnr.com/routes/airlines/f9.md)\ [The aircraft F9 flies](https://2lnr.com/seatmaps/f9.md) 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. Flying the other way? See [SJU to IAD nonstop flights](https://2lnr.com/routes/sju-iad.md). Award seats rather than schedules? See [award availability by airline](https://2lnr.com/awards.md). Looking beyond this route? See [every route from Washington (IAD)](https://2lnr.com/routes/iad.md), or [every route from San Juan (SJU)](https://2lnr.com/routes/sju.md). Nonstops to San Juan (SJU) from other airports within 150 miles of Washington (IAD): - [Washington (DCA) to San Juan (SJU)](https://2lnr.com/routes/dca-sju.md), 23 miles from IAD - [Baltimore (BWI) to San Juan (SJU)](https://2lnr.com/routes/bwi-sju.md), 45 miles from IAD - [Richmond (RIC) to San Juan (SJU)](https://2lnr.com/routes/ric-sju.md), 100 miles from IAD - [Philadelphia (PHL) to San Juan (SJU)](https://2lnr.com/routes/phl-sju.md), 134 miles from IAD Nonstops from Washington (IAD) to other airports within 150 miles of San Juan (SJU): - [Washington (IAD) to Charlotte Amalie (STT)](https://2lnr.com/routes/iad-stt.md), 68 miles from SJU Distances are great-circle between the airports, not driving distance. - [How to plan an upgrade by route](https://2lnr.com/guides/upgrade-strategy.md) ## 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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