$142+ Cheap flights from Dulles Intl (IAD) to Luis Munoz Marin Intl (SJU)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/30. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SJU
Oct 22 — Oct 291
Round-trip
1 adult, Economy
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Find cheap flights from Dulles Intl to Luis Munoz Marin 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 Washington, D.C. Dulles Intl to San Juan Luis Munoz Marin Intl are usually found in February or October, booked 57 days in advance, depart on a Monday or Sunday and return on a Thursday
Cheap flight deals from Dulles Intl to Luis Munoz Marin Intl
Cheapest
Best
Last-minute
One-way
Cheapest flights from Dulles Intl to Luis Munoz Marin IntlExplore the most affordable flight options available from Dulles Intl to Luis Munoz Marin Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 22, 2026.
Explore the most affordable flight options available from Dulles Intl to Luis Munoz Marin Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 22, 2026.
This Mytrip deal was found by Cheapflights users on 9/21. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/48:05 am -
2 stops27h 31m
Fri 11/63:55 am -
2 stops14h 17m
Deal found 9/21![Frontier logo]()
$290
This Mytrip deal was found by Cheapflights users on 9/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/309:06 pm -
2 stops25h 11m
Mon 11/24:52 pm -
2 stops25h 20m
Deal found 9/19![Frontier logo]()
$291
This Cheapflightsfares deal was found by Cheapflights users on 9/17. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1911:12 am -
1 stop9h 36m
Mon 9/217:00 am -
1 stop27h 17m
Deal found 9/17![Frontier logo]()
$292
This Kiwi.com deal was found by Cheapflights users on 9/20. 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 11/57:40 am -
2 stops15h 24m
Sun 11/83:55 am -
1 stop7h 26m
Deal found 9/20![Frontier logo]()
$293
This Kiwi.com deal was found by Cheapflights users on 9/18. 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 11/271:05 pm -
Nonstop3h 47m
Tue 12/15:01 am -
1 stop7h 10m
Deal found 9/18![Frontier logo]()
$294
This Kiwi.com deal was found by Cheapflights users on 9/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1911:16 am -
1 stop11h 33m
Mon 11/238:53 am -
Nonstop4h 17m
Deal found 9/19![Frontier logo]()
$295
This Frontier deal was found by Cheapflights users on 9/18. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/207:50 am -
1 stop8h 16m
Thu 9/245:11 pm -
1 stop6h 59m
Deal found 9/18![Frontier logo]()
$296
This Cheapflightsfares deal was found by Cheapflights users on 9/18. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/211:12 am -
1 stop27h 06m
Sun 10/117:00 am -
1 stop13h 11m
Deal found 9/18![Frontier logo]()
$297
This Mytrip deal was found by Cheapflights users on 9/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/137:50 am -
2 stops18h 19m
Sat 10/177:15 am -
2 stops17h 06m
Deal found 9/18![Frontier logo]()
$298
This Kiwi.com deal was found by Cheapflights users on 9/20. 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 10/219:06 pm -
1 stop19h 00m
Wed 10/288:45 am -
1 stop11h 26m
Deal found 9/20![Frontier logo]()
$299
This Cheapflightsfares deal was found by Cheapflights users on 9/18. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/126:07 pm -
1 stop18h 18m
Sun 11/157:23 am -
1 stop27h 58m
Deal found 9/18![Frontier logo]()
$300
This Priceline deal was found by Cheapflights users on 9/19. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/77:50 am -
1 stop7h 29m
Sun 10/117:00 am -
1 stop13h 11m
Deal found 9/19![Frontier logo]()
$301
Best flights from Dulles Intl to Luis Munoz Marin IntlDiscover carefully curated flight deals from Dulles Intl to Luis Munoz Marin Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 22, 2026.
Discover carefully curated flight deals from Dulles Intl to Luis Munoz Marin Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 22, 2026.
This United Airlines deal was found by Cheapflights users on 9/17. 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.
Sat 10/175:30 pm -
1 stop6h 20m
Sat 10/244:55 pm -
Nonstop3h 52m
Deal found 9/17![United Airlines logo]()
$342
This United Airlines deal was found by Cheapflights users on 9/18. 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 9/298:40 am -
Nonstop3h 54m
Sun 10/41:00 am -
1 stop6h 19m
Deal found 9/18![United Airlines logo]()
$362
This United Airlines deal was found by Cheapflights users on 9/21. 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 10/305:29 pm -
Nonstop3h 53m
Mon 11/28:05 am -
Nonstop4h 04m
Deal found 9/21![United Airlines logo]()
$363
This United Airlines deal was found by Cheapflights users on 9/20. 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.
Wed 11/185:29 pm -
Nonstop3h 53m
Sun 11/228:05 am -
Nonstop4h 04m
Deal found 9/20![United Airlines logo]()
$376
This United Airlines deal was found by Cheapflights users on 9/21. 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 10/86:45 am -
1 stop7h 00m
Thu 10/154:55 pm -
Nonstop3h 52m
Deal found 9/21![United Airlines logo]()
$414
This United Airlines deal was found by Cheapflights users on 9/21. 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 12/108:22 am -
Nonstop3h 53m
Wed 12/168:05 am -
Nonstop4h 04m
Deal found 9/21![United Airlines logo]()
$423
This United Airlines deal was found by Cheapflights users on 9/21. 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 9/265:30 pm -
1 stop6h 20m
Tue 9/294:55 pm -
Nonstop3h 52m
Deal found 9/21![United Airlines logo]()
$427
This United Airlines deal was found by Cheapflights users on 9/21. 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 10/238:40 am -
Nonstop3h 54m
Mon 10/263:55 pm -
1 stop8h 35m
Deal found 9/21![United Airlines logo]()
$428
This United Airlines deal was found by Cheapflights users on 9/18. 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.
Sun 10/48:40 am -
Nonstop3h 54m
Sat 10/104:55 pm -
Nonstop3h 52m
Deal found 9/18![United Airlines logo]()
$437
This United Airlines deal was found by Cheapflights users on 9/19. 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.
Sat 11/76:10 am -
1 stop7h 30m
Wed 11/118:05 am -
Nonstop4h 04m
Deal found 9/19![United Airlines logo]()
$442
This United Airlines deal was found by Cheapflights users on 9/19. 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.
Sat 10/178:40 am -
Nonstop3h 54m
Tue 10/201:25 pm -
1 stop9h 34m
Deal found 9/19![United Airlines logo]()
$442
Last-minute flights from Dulles Intl to Luis Munoz Marin IntlDiscover last-minute flight deals from Dulles Intl to Luis Munoz Marin Intl. Data last updated September 22, 2026 and is based on user searches.
Discover last-minute flight deals from Dulles Intl to Luis Munoz Marin Intl. Data last updated September 22, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 9/22. 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 9/226:13 pm -
1 stop21h 04m
Sun 9/272:57 am -
1 stop7h 20m
Deal found 9/22![Frontier logo]()
$292
This FlightHub deal was found by Cheapflights users on 9/20. 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.
Sat 9/2611:12 am -
1 stop6h 31m
Sun 9/277:00 am -
1 stop27h 17m
Deal found 9/20![Frontier logo]()
$300
This Cheapflightsfares deal was found by Cheapflights users on 9/18. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/211:12 am -
1 stop27h 06m
Sun 10/117:00 am -
1 stop13h 11m
Deal found 9/18![Frontier logo]()
$297
This Priceline deal was found by Cheapflights users on 9/19. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/77:50 am -
1 stop7h 29m
Sun 10/117:00 am -
1 stop13h 11m
Deal found 9/19![Frontier logo]()
$301
This CheapOair deal was found by Cheapflights users on 9/21. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1111:12 am -
1 stop14h 41m
Fri 10/167:00 am -
1 stop13h 11m
Deal found 9/21![Frontier logo]()
$293
This Kiwi.com deal was found by Cheapflights users on 9/20. 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 10/117:50 am -
1 stop8h 16m
Wed 10/145:11 pm -
1 stop7h 10m
Deal found 9/20![Frontier logo]()
$294
This Mytrip deal was found by Cheapflights users on 9/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/137:50 am -
2 stops18h 19m
Sat 10/177:15 am -
2 stops17h 06m
Deal found 9/18![Frontier logo]()
$298
This Kiwi.com deal was found by Cheapflights users on 9/21. 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 10/149:06 pm -
2 stops16h 25m
Sat 10/175:11 pm -
1 stop7h 10m
Deal found 9/21![Frontier logo]()
$295
This Kiwi.com deal was found by Cheapflights users on 9/20. 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 10/1711:12 am -
1 stop6h 25m
Sun 10/253:00 am -
1 stop7h 17m
Deal found 9/20![Frontier logo]()
$296
This Kiwi.com deal was found by Cheapflights users on 9/20. 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 10/219:06 pm -
1 stop19h 00m
Wed 10/288:45 am -
1 stop11h 26m
Deal found 9/20![Frontier logo]()
$299
This Frontier deal was found by Cheapflights users on 9/18. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2211:12 am -
1 stop6h 25m
Thu 10/223:00 am -
1 stop7h 17m
Deal found 9/18![Frontier logo]()
$302
This Mytrip deal was found by Cheapflights users on 9/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/309:06 pm -
2 stops25h 11m
Mon 11/24:52 pm -
2 stops25h 20m
Deal found 9/19![Frontier logo]()
$291
One-way flights from Dulles Intl to Luis Munoz Marin IntlSearch for one-way flight options from Dulles Intl to Luis Munoz Marin Intl. Find affordable one-way fares based on user searches. Data last updated September 22, 2026.
Search for one-way flight options from Dulles Intl to Luis Munoz Marin Intl. Find affordable one-way fares based on user searches. Data last updated September 22, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 9/19. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/301:05 pm -
Nonstop3h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![Frontier logo]()
$142
This Frontier deal was found by Cheapflights users on 9/18. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/167:50 am -
1 stop8h 16m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Frontier logo]()
$144
This FlightHub deal was found by Cheapflights users on 9/21. 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.
Sun 10/187:50 am -
1 stop8h 16m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Frontier logo]()
$146
This CheapOair deal was found by Cheapflights users on 9/21. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/56:07 pm -
1 stop18h 18m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Frontier logo]()
$147
This Cheapflightsfares deal was found by Cheapflights users on 9/18. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/36:13 pm -
1 stop19h 21m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Frontier logo]()
$148
This Kiwi.com deal was found by Cheapflights users on 9/20. 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 11/29:06 pm -
2 stops41h 13m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Frontier logo]()
$149
This Kiwi.com deal was found by Cheapflights users on 9/18. 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 10/159:06 pm -
2 stops29h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Frontier logo]()
$150
This Kiwi.com deal was found by Cheapflights users on 9/18. 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.
Wed 10/147:50 am -
2 stops18h 19m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Frontier logo]()
$151
This Kiwi.com deal was found by Cheapflights users on 9/17. 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.
Sun 11/156:07 pm -
1 stop18h 18m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Frontier logo]()
$154
This Kiwi.com deal was found by Cheapflights users on 9/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:36 pm -
3 stops21h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![Multiple Airlines logo]()
$155
This Mytrip deal was found by Cheapflights users on 9/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/129:06 pm -
2 stops18h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Frontier logo]()
$156
Find flight deals from Dulles Intl to Luis Munoz Marin Intl
Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Luis Munoz Marin Intl (SJU). 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 September 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $290 (Mytrip) |
One-way from | $142 (Cheapflightsfares) |
Popular in | July |
Cheapest in | February |
Average price | $381 |
Good round-trip deal | $407 or less |
Good one-way deal | $224 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Dulles Intl to Luis Munoz Marin 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 7,457,451 searches. Data last updated September 22, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to San Juan Luis Munoz Marin Intl Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Washington, D.C.San Juan
IAD Washington, D.C. Dulles Intl - SJU San Juan Luis Munoz Marin Intl
IADSJU
Washington, D.C. Dulles Intl
Tue 10/20
8:40 am-12:34 pm
Nonstop3h 54m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$169
Quickest round-trip
Washington, D.C.San Juan
IAD Washington, D.C. Dulles Intl - SJU San Juan Luis Munoz Marin Intl
IADSJU
Washington, D.C. Dulles Intl
Wed 11/18
5:29 pm-10:22 pm
Nonstop3h 53m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$169
Washington, D.C.San Juan
IAD Washington, D.C. Dulles Intl - SJU San Juan Luis Munoz Marin Intl
IADSJU
Washington, D.C. Dulles Intl
Mon 10/5
8:40 am-12:34 pm
Nonstop3h 54m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$169
Washington, D.C.San Juan
IAD Washington, D.C. Dulles Intl - SJU San Juan Luis Munoz Marin Intl
IADSJU
Washington, D.C. Dulles Intl
Wed 10/7
8:40 am-12:34 pm
Nonstop3h 54m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$196
Washington, D.C.San Juan
IAD Washington, D.C. Dulles Intl - SJU San Juan Luis Munoz Marin Intl
IADSJU
Washington, D.C. Dulles Intl
Fri 11/13
5:29 pm-10:22 pm
Nonstop3h 53m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$196
Washington, D.C.San Juan
IAD Washington, D.C. Dulles Intl - SJU San Juan Luis Munoz Marin Intl
IADSJU
Washington, D.C. Dulles Intl
Tue 12/1
12:35 pm-11:59 pm
1 stop10h 24m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$198
Washington, D.C.San Juan
IAD Washington, D.C. Dulles Intl - SJU San Juan Luis Munoz Marin Intl
IADSJU
Washington, D.C. Dulles Intl
Mon 10/12
8:40 am-12:34 pm
Nonstop3h 54m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$208
Washington, D.C.San Juan
IAD Washington, D.C. Dulles Intl - SJU San Juan Luis Munoz Marin Intl
IADSJU
Washington, D.C. Dulles Intl
Sun 10/4
8:40 am-12:34 pm
Nonstop3h 54m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$219
Washington, D.C.San Juan
IAD Washington, D.C. Dulles Intl - SJU San Juan Luis Munoz Marin Intl
IADSJU
Washington, D.C. Dulles Intl
Sun 10/18
8:40 am-12:34 pm
Nonstop3h 54m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$219
Washington, D.C.San Juan
IAD Washington, D.C. Dulles Intl - SJU San Juan Luis Munoz Marin Intl
IADSJU
Washington, D.C. Dulles Intl
Thu 11/19
8:22 am-1:15 pm
Nonstop3h 53m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$219
Showing 1-10 of 21 resultsSorted by cheapest first
Compare providers for flights from Dulles Intl to Luis Munoz Marin Intl
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dulles Intl to Luis Munoz Marin Intl in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-San Juan Luis Munoz Marin Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Dulles Intl Airport-San Juan Luis Munoz Marin Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-San Juan Luis Munoz Marin Intl Airport flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-San Juan Luis Munoz Marin Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Dulles Intl Airport-San Juan Luis Munoz Marin Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Dulles Intl to Luis Munoz Marin Intl
Have a flexible travel schedule? Discover the best time to fly to Luis Munoz Marin Intl from Dulles Intl with our price prediction graph.
IAD-SJU
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 Washington, D.C. Dulles Intl Airport to San Juan Luis Munoz Marin Intl Airport
Prices
Delays
How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to San Juan Luis Munoz Marin Intl Airport?
The best time to book flights from Washington, D.C. Dulles Intl Airport to San Juan Luis Munoz Marin Intl Airport is 56 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to San Juan Luis Munoz Marin Intl Airport?
Currently, February is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to San Juan Luis Munoz Marin Intl Airport (average of $315). Flying from Washington, D.C. Dulles Intl Airport to San Juan Luis Munoz Marin Intl Airport in July is currently the most expensive (average of $538). 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 IAD to SJU?
Find hourly flight availability from Dulles Intl to Luis Munoz Marin Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 22, 2026.
It’s typically best to fly out from Washington, D.C. Dulles Intl Airport to San Juan Luis Munoz Marin Intl Airport in the evening. Doing so could potentially save you 32% on the flight price compared to flying in the morning, which is usually more expensive.
How often are flights from Washington, D.C. to San Juan delayed?
About 21% of weekly flights between Washington, D.C. and San Juan have experienced delays in the past year, with the average delay time being 127 minutes.
What is the most punctual flight time for Washington, D.C. to San Juan flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Wednesday tends to have the lowest number of delays on this route, whereas Tuesday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Washington, D.C. to San Juan flights?
Over the last year, United Airlines have had the lowest number of delays on this route, with just 19% of flights being delayed.
The best insider tips for Washington, D.C. Dulles Intl Airport to San Juan Luis Munoz Marin Intl Airport flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Washington, D.C. Dulles Intl Airport to San Juan Luis Munoz Marin Intl Airport trip
Our travel experts
Reviews of airlines servicing Luis Munoz Marin Intl
Get insights into the airlines that provide service to Luis Munoz Marin 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 Luis Munoz Marin Intl. Reviews last updated September 22, 2026.
See what other customers who have flown with Delta,United Airlines, andJetBlue from Washington, D.C. Dulles Intl Airport to San Juan Luis Munoz Marin Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.8
Boarding
8.1
Overall
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Entertainment
7.8
Boarding
8.1
Overall
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Entertainment
7.8
Boarding
8.1
Overall
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Entertainment
7.8
Boarding
8.1
Overall
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Entertainment
7.8
Boarding
8.1
Overall
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Entertainment
7.8
Boarding
8.1
Overall
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Related info for your journey
Find useful and relevant information for your journey from Dulles Intl to Luis Munoz Marin 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 San Juan Luis Munoz Marin Intl Airport?
Book flights to San Juan Luis Munoz Marin Intl Airport if you plan to visit one of these locationsFajardo
Luquillo
Rio Grande
Dorado
Humacao
Bayamón
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Search flights from Dulles Intl to Luis Munoz Marin Intl by cabin class
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Other flights to Luis Munoz Marin Intl
Explore flights to Luis Munoz Marin Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 22, 2026.
Dulles Intl and Luis Munoz Marin Intl flights
Browse other Dulles Intl and Luis Munoz Marin Intl flight options. Last updated on September 22, 2026.
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Browse through other flights departing from Dulles Intl. Flights are based on user searches made on Cheapflights and were last updated on September 22, 2026.
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Top 5 airlines flying from Dulles Intl to Luis Munoz Marin Intl
Discover the top 5 airlines that operate flights from Dulles Intl to Luis Munoz Marin 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 7,457,451 searches. Data last updated September 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$88 | Average$323 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$136 | Average$342 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$240 | Average$465 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$266 | Average$487 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$278 | Average$438 | FlexibilityNo cancel fee | On-time71% |