$148+ Cheap flights from San Juan to Dulles Intl (IAD)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — IAD
Sep 18 — Sep 251
Round-trip
1 adult, Economy
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Find cheap flights from San Juan to Dulles Intl with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from San Juan to Washington, D.C. Dulles Intl are usually found in January or February, booked 10 days in advance, depart on a Thursday or Saturday and return on a Sunday
Cheap flight deals from San Juan to Dulles Intl
Cheapest
Best
Last-minute
One-way
Cheapest flights from San Juan to Dulles IntlExplore the most affordable flight options available from San Juan to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 19, 2026.
Explore the most affordable flight options available from San Juan to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 19, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/146:42 pm -
1 stop15h 35m
Mon 9/216:13 pm -
1 stop21h 04m
Deal found 8/15![Frontier logo]()
$268
This Kiwi.com deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/177:50 am -
2 stops16h 20m
Mon 9/216:13 pm -
1 stop21h 04m
Deal found 8/16![Frontier logo]()
$269
This Kiwi.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/228:45 am -
1 stop11h 24m
Sun 9/277:50 am -
1 stop8h 16m
Deal found 8/14![Frontier logo]()
$271
This Kiwi.com deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/163:00 am -
1 stop7h 17m
Wed 10/216:21 pm -
1 stop19h 10m
Deal found 8/16![Frontier logo]()
$273
This Kiwi.com deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/45:50 pm -
2 stops23h 24m
Tue 9/86:09 pm -
1 stop21h 08m
Deal found 8/15![Frontier logo]()
$275
This Faresmojo deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Faresmojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/22:59 pm -
1 stop9h 35m
Tue 9/812:25 pm -
1 stop11h 24m
Deal found 8/16![JetBlue logo]()
$276
This Kiwi.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/113:55 pm -
1 stop18h 22m
Fri 9/186:13 pm -
1 stop22h 50m
Deal found 8/14![Frontier logo]()
$280
This Kiwi.com deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/104:39 pm -
1 stop20h 24m
Mon 9/146:13 pm -
1 stop21h 04m
Deal found 8/16![Frontier logo]()
$281
This Trip.com deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/218:45 am -
1 stop11h 26m
Wed 10/287:00 am -
1 stop8h 25m
Deal found 8/16![Frontier logo]()
$284
This Kiwi.com deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/26:35 am -
1 stop13h 09m
Tue 9/88:39 pm -
2 stops18h 38m
Deal found 8/16![Frontier logo]()
$285
Best flights from San Juan to Dulles IntlDiscover carefully curated flight deals from San Juan to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 19, 2026.
Discover carefully curated flight deals from San Juan to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 19, 2026.
This Delta deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/262:59 pm -
1 stop9h 35m
Sun 8/3012:29 pm -
1 stop11h 23m
Deal found 8/15![Delta logo]()
$326
This United Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/14:55 pm -
Nonstop3h 52m
Mon 9/79:00 am -
Nonstop3h 54m
Deal found 8/18![United Airlines logo]()
$337
This United Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/104:55 pm -
Nonstop3h 52m
Tue 10/138:40 am -
Nonstop3h 54m
Deal found 8/18![United Airlines logo]()
$377
This United Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/34:55 pm -
Nonstop3h 52m
Sun 9/69:00 am -
Nonstop3h 54m
Deal found 8/18![United Airlines logo]()
$427
This United Airlines deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/181:00 am -
2 stops10h 52m
Tue 9/226:15 am -
1 stop7h 38m
Deal found 8/19![United Airlines logo]()
$436
This United Airlines deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/34:55 pm -
Nonstop3h 52m
Mon 9/79:00 am -
Nonstop3h 54m
Deal found 8/14![United Airlines logo]()
$442
This United Airlines deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/313:56 pm -
1 stop8h 48m
Wed 9/29:00 am -
Nonstop3h 54m
Deal found 8/15![United Airlines logo]()
$446
This United Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/174:55 pm -
Nonstop3h 52m
Sun 9/209:00 am -
Nonstop3h 54m
Deal found 8/17![United Airlines logo]()
$467
This United Airlines deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/234:55 pm -
Nonstop3h 52m
Mon 10/268:22 am -
Nonstop3h 53m
Deal found 8/16![United Airlines logo]()
$467
Last-minute flights from San Juan to Dulles IntlDiscover last-minute flight deals from San Juan to Dulles Intl. Data last updated August 19, 2026 and is based on user searches.
Discover last-minute flight deals from San Juan to Dulles Intl. Data last updated August 19, 2026 and is based on user searches.
This Faresmojo deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Faresmojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/277:00 am -
1 stop11h 28m
Mon 8/313:03 pm -
1 stop7h 26m
Deal found 8/14![JetBlue logo]()
$292
This Faresmojo deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Faresmojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/22:59 pm -
1 stop9h 35m
Tue 9/812:25 pm -
1 stop11h 24m
Deal found 8/16![JetBlue logo]()
$276
This Kiwi.com deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/26:35 am -
1 stop13h 09m
Tue 9/88:39 pm -
2 stops18h 38m
Deal found 8/16![Frontier logo]()
$285
This American Airlines deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/37:30 am -
1 stop13h 26m
Sun 9/69:07 am -
1 stop15h 08m
Deal found 8/16![American Airlines logo]()
$286
This Kiwi.com deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/45:50 pm -
2 stops23h 24m
Tue 9/86:09 pm -
1 stop21h 08m
Deal found 8/15![Frontier logo]()
$275
This Kiwi.com deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/104:39 pm -
1 stop20h 24m
Mon 9/146:13 pm -
1 stop21h 04m
Deal found 8/16![Frontier logo]()
$281
This Kiwi.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/113:55 pm -
1 stop18h 22m
Fri 9/186:13 pm -
1 stop22h 50m
Deal found 8/14![Frontier logo]()
$280
This Kiwi.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1210:30 am -
1 stop9h 39m
Sat 9/199:04 pm -
1 stop19h 02m
Deal found 8/18![Frontier logo]()
$290
This Kiwi.com deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/146:42 pm -
1 stop15h 35m
Mon 9/216:13 pm -
1 stop21h 04m
Deal found 8/15![Frontier logo]()
$268
This Kiwi.com deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/177:50 am -
2 stops16h 20m
Mon 9/216:13 pm -
1 stop21h 04m
Deal found 8/16![Frontier logo]()
$269
One-way flights from San Juan to Dulles IntlSearch for one-way flight options from San Juan to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated August 19, 2026.
Search for one-way flight options from San Juan to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated August 19, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/157:00 am -
2 stops17h 21m
Deal found 8/18![Frontier logo]()
$148
This Kiwi.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/24:39 pm -
2 stops24h 39m
Deal found 8/18![Frontier logo]()
$150
This Kiwi.com deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/184:39 pm -
1 stop25h 54m
Deal found 8/17![Frontier logo]()
$151
This American Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/912:41 pm -
1 stop8h 35m
Deal found 8/17![American Airlines logo]()
$152
This American Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/27:30 am -
1 stop13h 26m
Deal found 8/17![American Airlines logo]()
$153
This Trip.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/233:00 am -
1 stop7h 17m
Deal found 8/14![Frontier logo]()
$154
This Kiwi.com deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/163:00 am -
1 stop7h 17m
Deal found 8/17![Frontier logo]()
$155
This Kiwi.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/85:37 pm -
2 stops30h 33m
Deal found 8/18![Frontier logo]()
$156
This Kiwi.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/137:50 am -
2 stops33h 28m
Deal found 8/18![Frontier logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:21 pm -
2 stops22h 57m
Deal found 8/16![Frontier logo]()
$158
This Kiwi.com deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/146:42 pm -
1 stop15h 35m
Deal found 8/15![Frontier logo]()
$159
This FlightHub deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/96:30 am -
1 stop10h 48m
Deal found 8/16![Frontier logo]()
$160
Find flight deals from San Juan to Dulles Intl
Discover tips and strategies to find the most affordable flight options for your journey from San Juan (PR1) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 19, 2026.
Round-trip from | $268 (Kiwi.com) |
|---|---|
One-way from | $148 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $443 |
Cheapflights Fare Finder
Customize your flight search to find flights from San Juan to Dulles Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 19, 2026.
Use the filters below to find and compare flights from San Juan to Washington, D.C. Dulles Intl Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
San JuanWashington, D.C.
SJU San Juan Luis Munoz Marin Intl - IAD Washington, D.C. Dulles Intl
SJUIAD
San Juan Luis Munoz Marin Intl
Wed 8/26
2:59 pm-12:34 am
1 stop9h 35m
Washington, D.C. Dulles Intl
Sun 8/30
12:29 pm-11:52 pm
1 stop11h 23m
$326
San JuanWashington, D.C.
SJU San Juan Luis Munoz Marin Intl - IAD Washington, D.C. Dulles Intl
SJUIAD
San Juan Luis Munoz Marin Intl
Tue 9/1
4:55 pm-8:47 pm
Nonstop3h 52m
Washington, D.C. Dulles Intl
Mon 9/7
9:00 am-12:54 pm
Nonstop3h 54m
$337
San JuanWashington, D.C.
SJU San Juan Luis Munoz Marin Intl - IAD Washington, D.C. Dulles Intl
SJUIAD
San Juan Luis Munoz Marin Intl
Sat 10/10
4:55 pm-8:47 pm
Nonstop3h 52m
Washington, D.C. Dulles Intl
Tue 10/13
8:40 am-12:34 pm
Nonstop3h 54m
$377
San JuanWashington, D.C.
SJU San Juan Luis Munoz Marin Intl - IAD Washington, D.C. Dulles Intl
SJUIAD
San Juan Luis Munoz Marin Intl
Thu 9/3
4:55 pm-8:47 pm
Nonstop3h 52m
Washington, D.C. Dulles Intl
Sun 9/6
9:00 am-12:54 pm
Nonstop3h 54m
$427
San JuanWashington, D.C.
SJU San Juan Luis Munoz Marin Intl - IAD Washington, D.C. Dulles Intl
SJUIAD
San Juan Luis Munoz Marin Intl
Fri 9/18
1:00 am-11:52 am
2 stops10h 52m
Washington, D.C. Dulles Intl
Tue 9/22
6:15 am-1:53 pm
1 stop7h 38m
$436
San JuanWashington, D.C.
SJU San Juan Luis Munoz Marin Intl - IAD Washington, D.C. Dulles Intl
SJUIAD
San Juan Luis Munoz Marin Intl
Thu 9/3
4:55 pm-8:47 pm
Nonstop3h 52m
Washington, D.C. Dulles Intl
Mon 9/7
9:00 am-12:54 pm
Nonstop3h 54m
$442
San JuanWashington, D.C.
SJU San Juan Luis Munoz Marin Intl - IAD Washington, D.C. Dulles Intl
SJUIAD
San Juan Luis Munoz Marin Intl
Mon 8/31
3:56 pm-12:44 am
1 stop8h 48m
Washington, D.C. Dulles Intl
Wed 9/2
9:00 am-12:54 pm
Nonstop3h 54m
$446
San JuanWashington, D.C.
SJU San Juan Luis Munoz Marin Intl - IAD Washington, D.C. Dulles Intl
SJUIAD
San Juan Luis Munoz Marin Intl
Thu 9/17
4:55 pm-8:47 pm
Nonstop3h 52m
Washington, D.C. Dulles Intl
Sun 9/20
9:00 am-12:54 pm
Nonstop3h 54m
$467
Quickest round-trip
San JuanWashington, D.C.
SJU San Juan Luis Munoz Marin Intl - IAD Washington, D.C. Dulles Intl
SJUIAD
San Juan Luis Munoz Marin Intl
Fri 10/23
4:55 pm-8:47 pm
Nonstop3h 52m
Washington, D.C. Dulles Intl
Mon 10/26
8:22 am-12:15 pm
Nonstop3h 53m
$467
Cheapest one-way
Quickest one-way
San JuanWashington, D.C.
SJU San Juan Luis Munoz Marin Intl - IAD Washington, D.C. Dulles Intl
SJUIAD
San Juan Luis Munoz Marin Intl
Sat 10/24
4:55 pm-8:47 pm
Nonstop3h 52m
$189
Showing 1-10 of 18 resultsSorted by cheapest first
Best time to book a flight from San Juan to Dulles Intl
Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from San Juan with our price prediction graph.
PR1-IAD
SJU-IAD
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from San Juan to Washington, D.C. Dulles Intl Airport
PR1-IAD
SJU-IAD
What is the cheapest month to book a flight from San Juan to Washington, D.C. Dulles Intl Airport?
Currently, January is the cheapest month in which you can book a flight from San Juan to Washington, D.C. Dulles Intl Airport (average of $114). Flying from San Juan to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $539). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from SJU to IAD?
Find hourly flight availability from San Juan to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 19, 2026.
When flying from San Juan to Washington, D.C. Dulles Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Weekly flight availability from San Juan to Washington, D.C. Dulles Intl Airport
Explore weekly flight availability from San Juan to Dulles Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated August 19, 2026.
The most flights from PR1 to IAD are scheduled on a Monday (2 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (2 on average).
How much does it cost to fly round-trip from San Juan to Washington, D.C. Dulles Intl Airport?
Airfare is below average for this route at the moment.
San Juan to Washington, D.C. Dulles Intl Airport flights typically cost between $370 and $480 in September.The cheapest round-trip price found within the last 5 days was $268 on Frontier (Sep 14-Sep 21).
How far ahead should I book a flight from San Juan to Washington, D.C. Dulles Intl Airport?
To ensure you get the cheapest price possible for a flight from San Juan to Washington, D.C. Dulles Intl Airport, you should look to book at least 9 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
Reviews of airlines servicing Dulles Intl
Get insights into the airlines that provide service to Dulles Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dulles Intl. Reviews last updated August 19, 2026.
Read through reviews of airlines operating flights from San Juan to Washington, D.C. Dulles Intl Airport, such as United Airlines and Frontier. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.1
Boarding
7.7
Overall
7.4
Food
6.7
Comfort
7.3
Entertainment
7.1
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
Crew
8.1
Boarding
7.7
Overall
7.4
Food
6.7
Comfort
7.3
Entertainment
7.1
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
Crew
8.1
Boarding
7.7
Overall
7.4
Food
6.7
Comfort
7.3
Entertainment
7.1
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
Related info for your journey
Find useful and relevant information for your journey from San Juan to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Washington, D.C. Dulles Intl Airport?
Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locationsAlexandria
Owings Mills
Arlington
Tysons
Lanham
Reston
Herndon
Rockville
Chantilly
Hyattsville
Fredericksburg
Falls Church
Sterling
Hanover
Laurel
Springfield
Oxon Hill
Clinton
Hunt Valley
Woodbridge
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Top 2 airlines flying from San Juan to Dulles Intl
Discover the top 2 airlines that operate flights from San Juan to Dulles Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 19, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$76 | Average$158 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$236 | Average$412 | FlexibilityNo cancel fee | On-time69% |