--- title: "Sint Maarten to Washington flights: who flies SXM-IAD" description: "United Airlines flies nonstop from SXM to IAD, about 1 flight a week as UA 1223, scheduled at 4h 35m to 4h 40m. See the full timetable and who flies it on 2LNR." canonical: "https://2lnr.com/routes/sxm-iad" url: "https://2lnr.com/routes/sxm-iad.md" date_modified: "2026-10-18T05:10:47Z" --- # Sint Maarten to Washington (SXM-IAD): nonstop flights and who flies them United Airlines flies nonstop from Sint Maarten (SXM) to Washington (IAD) just once a week. In the timetable below it flies as UA 1223, scheduled at 4h 35m to 4h 40m for the 1,682 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 SXM to IAD on the interactive map [Get started free](https://2lnr.com/login) 1 Flights a week, 4-week average 4h 35m to 4h 40m Scheduled flight time 1,682 mi Nonstop distance Free To get started ## Sint Maarten to Washington flight schedule Scheduled nonstop departures for SXM to IAD 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 Sint Maarten (SXM) to Washington (IAD) | Date | Flight | Airline | Departs SXM | Arrives IAD | Duration | Aircraft | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | Sat, Oct 31 | UA 1223 | United Airlines | 16:00 | 20:40 | 4h 40m | [Boeing 737 MAX 8](https://2lnr.com/seatmaps/ua/737-max-8.md) | | Sat, Nov 7 | UA 1223 | United Airlines | 17:00 | 20:40 | 4h 40m | Boeing 737 MAX 8 | | Sat, Nov 14 | UA 1223 | United Airlines | 17:00 | 20:35 | 4h 35m | Boeing 737 MAX 8 | | Sat, Nov 21 | UA 1223 | United Airlines | 17:00 | 20:35 | 4h 35m | Boeing 737 MAX 8 | | Sat, Nov 28 | UA 1223 | United Airlines | 17:00 | 20:35 | 4h 35m | Boeing 737 MAX 8 | | Sat, Dec 5 | UA 1223 | United Airlines | 17:00 | 20:35 | 4h 35m | Boeing 737 MAX 8 | | Sat, Dec 12 | UA 1223 | United Airlines | 17:00 | 20:35 | 4h 35m | Boeing 737 MAX 8 | Showing all 7 scheduled SXM to IAD 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 SXM to IAD date on the interactive map ## Aircraft on the Sint Maarten to Washington nonstop United Airlines flies the [Boeing 737 MAX 8](https://2lnr.com/seatmaps/ua/737-max-8.md) on every departure in the schedule table on this page. Each linked aircraft page shows where that airline schedules it. Airlines can swap aircraft up to departure. ## The full SXM to IAD nonstop schedule This page carries the full SXM to IAD nonstop schedule, who operates each departure and how often it runs; the reverse direction is linked below. ### See the schedule Who operates each SXM to IAD nonstop and how often it runs, from 2LNR's schedule data. ### Plan on the map See SXM to IAD on the interactive route map, with schedules, connections, and route statistics. ## Airlines flying Sint Maarten to Washington nonstop Carriers operating SXM to IAD 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) See SXM to IAD on the interactive map → ## Frequently asked questions about SXM to IAD **How long is the flight from Sint Maarten (SXM) to Washington (IAD)?** Scheduled flight times from Sint Maarten (SXM) to Washington (IAD) run from 4h 35m to 4h 40m across the departures in the schedule table on this page. The nonstop covers about 1,682 miles, and airlines adjust scheduled times by season, so confirm with the airline before you book. **Which airlines fly nonstop from SXM to IAD?** United Airlines is currently the only airline flying SXM to IAD nonstop. 2LNR doesn't show award or upgrade space for it on SXM to IAD, so this page carries the schedule rather than a space claim. **How often does SXM to IAD operate?** The SXM to IAD nonstop currently runs once a week, on United Airlines. Thin schedules like this change by season, and on Pro an alert will catch anything added. **What time do flights from SXM to IAD depart?** Scheduled SXM to IAD nonstops in the next 7 days with service leave between 16:00 and 17:00, local time at Sint Maarten. The schedule table on this page lists every departure by date, with its arrival time and aircraft. **Which flights operate SXM to IAD nonstop?** United Airlines flies UA 1223 nonstop from Sint Maarten (SXM) to Washington (IAD), the only flight number in the schedule table on this page. The table lists each date with its departure and arrival times and aircraft. **Does 2LNR show upgrade or award space on SXM to IAD?** Not on this route: 2LNR doesn't show award or upgrade space for United Airlines on SXM to IAD. The page carries the full SXM to IAD nonstop schedule and who flies each departure, and the reverse direction is linked below. Flying the other way? See [IAD to SXM nonstop flights](https://2lnr.com/routes/iad-sxm.md). Award seats rather than schedules? See [award availability by airline](https://2lnr.com/awards.md). Looking beyond this route? See [every route from Sint Maarten (SXM)](https://2lnr.com/routes/sxm.md), or [every route from Washington (IAD)](https://2lnr.com/routes/iad.md). Nonstops to Washington (IAD) from other airports within 150 miles of Sint Maarten (SXM): - [Charlotte Amalie (STT) to Washington (IAD)](https://2lnr.com/routes/stt-iad.md), 124 miles from SXM Nonstops from Sint Maarten (SXM) to other airports within 150 miles of Washington (IAD): - [Sint Maarten (SXM) to Philadelphia (PHL)](https://2lnr.com/routes/sxm-phl.md), 134 miles from IAD 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 SXM to IAD 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. [Get started free](https://2lnr.com/login)