$179+ Cheap flights from Dulles Intl (IAD) to San Diego (SAN)
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 11/21. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SAN
Nov 21 — Nov 281
Round-trip
1 adult, Economy
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Find cheap flights from Dulles Intl to San Diego 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 Diego are usually found in January or April, booked 54 days in advance, depart on a Saturday or Wednesday and return on a Friday
Cheap flight deals from Dulles Intl to San Diego
Cheapest
Best
Last-minute
One-way
Cheapest flights from Dulles Intl to San DiegoExplore the most affordable flight options available from Dulles Intl to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 22, 2026.
Explore the most affordable flight options available from Dulles Intl to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 22, 2026.
This Delta deal was found by Cheapflights users on 10/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/157:00 am -
1 stop10h 58m
Wed 11/251:31 pm -
1 stop7h 16m
Deal found 10/21![Delta logo]()
$339
This Mytrip deal was found by Cheapflights users on 10/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/1312:31 pm -
2 stops24h 40m
Sun 11/159:32 am -
2 stops21h 49m
Deal found 10/20![Frontier logo]()
$340
This Mytrip deal was found by Cheapflights users on 10/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1012:31 pm -
2 stops24h 40m
Sun 11/159:32 am -
2 stops21h 49m
Deal found 10/20![Frontier logo]()
$341
This Booking.com deal was found by Cheapflights users on 10/21. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/197:46 am -
1 stop10h 01m
Fri 11/208:50 am -
1 stop17h 20m
Deal found 10/21![Multiple Airlines logo]()
$344
This WAYA deal was found by Cheapflights users on 10/20. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/69:23 pm -
1 stop15h 55m
Wed 12/99:40 am -
Nonstop4h 59m
Deal found 10/20![Multiple Airlines logo]()
$345
This WAYA deal was found by Cheapflights users on 10/21. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/23:34 pm -
1 stop23h 10m
Sat 12/59:40 am -
Nonstop4h 59m
Deal found 10/21![Multiple Airlines logo]()
$346
This Alaska Airlines deal was found by Cheapflights users on 10/21. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/97:00 am -
1 stop11h 10m
Wed 12/169:40 am -
Nonstop4h 59m
Deal found 10/21![Alaska Airlines logo]()
$347
This WAYA deal was found by Cheapflights users on 10/20. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1111:16 am -
1 stop25h 19m
Tue 11/248:50 am -
1 stop17h 20m
Deal found 10/20![Multiple Airlines logo]()
$348
This American Airlines deal was found by Cheapflights users on 10/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/27:14 am -
1 stop10h 09m
Mon 12/71:11 pm -
1 stop7h 19m
Deal found 10/20![American Airlines logo]()
$349
This Expedia deal was found by Cheapflights users on 10/20. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/110:33 pm -
2 stops14h 48m
Thu 12/109:40 am -
Nonstop4h 59m
Deal found 10/20![Multiple Airlines logo]()
$350
This Mytrip deal was found by Cheapflights users on 10/21. 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.
Thu 11/1212:31 pm -
2 stops14h 26m
Wed 11/256:30 am -
2 stops19h 40m
Deal found 10/21![Frontier logo]()
$351
This Mytrip deal was found by Cheapflights users on 10/19. 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.
Thu 11/262:10 pm -
2 stops12h 47m
Wed 12/96:30 am -
2 stops29h 19m
Deal found 10/19![Frontier logo]()
$352
Best flights from Dulles Intl to San DiegoDiscover carefully curated flight deals from Dulles Intl to San Diego that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 22, 2026.
Discover carefully curated flight deals from Dulles Intl to San Diego that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 22, 2026.
This Delta deal was found by Cheapflights users on 10/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/157:00 am -
1 stop10h 58m
Wed 11/251:31 pm -
1 stop7h 16m
Deal found 10/21![Delta logo]()
$339
This United Airlines deal was found by Cheapflights users on 10/19. 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 12/115:40 pm -
Nonstop5h 43m
Mon 12/149:45 pm -
Nonstop4h 42m
Deal found 10/19![United Airlines logo]()
$357
This Alaska Airlines deal was found by Cheapflights users on 10/16. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/125:17 pm -
1 stop19h 56m
Wed 11/189:41 am -
Nonstop4h 59m
Deal found 10/16![Alaska Airlines logo]()
$427
This United Airlines deal was found by Cheapflights users on 10/20. 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 12/168:37 am -
Nonstop5h 44m
Mon 1/47:10 pm -
1 stop7h 09m
Deal found 10/20![United Airlines logo]()
$407
This Delta deal was found by Cheapflights users on 10/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/147:05 am -
1 stop12h 31m
Mon 1/1810:40 pm -
1 stop8h 21m
Deal found 10/20![Delta logo]()
$408
This Alaska Airlines deal was found by Cheapflights users on 10/21. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/157:05 am -
1 stop10h 42m
Wed 11/259:40 am -
Nonstop4h 56m
Deal found 10/21![Alaska Airlines logo]()
$447
This United Airlines deal was found by Cheapflights users on 10/17. 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.
Wed 11/259:00 am -
Nonstop5h 46m
Mon 11/3010:30 pm -
1 stop7h 19m
Deal found 10/17![United Airlines logo]()
$420
This Delta deal was found by Cheapflights users on 10/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/195:16 pm -
1 stop7h 54m
Fri 11/201:31 pm -
1 stop7h 16m
Deal found 10/18![Delta logo]()
$437
This United Airlines deal was found by Cheapflights users on 10/16. 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.
Sat 11/145:50 pm -
Nonstop5h 43m
Wed 11/189:45 pm -
Nonstop4h 42m
Deal found 10/16![United Airlines logo]()
$438
This Alaska Airlines deal was found by Cheapflights users on 10/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/47:00 am -
2 stops12h 52m
Fri 12/115:38 pm -
1 stop8h 57m
Deal found 10/20![Alaska Airlines logo]()
$483
This Delta deal was found by Cheapflights users on 10/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/176:00 am -
1 stop7h 27m
Fri 12/2511:19 am -
1 stop9h 22m
Deal found 10/16![Delta logo]()
$462
This United Airlines deal was found by Cheapflights users on 10/16. 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 12/48:37 am -
Nonstop5h 44m
Wed 12/912:35 pm -
Nonstop4h 54m
Deal found 10/16![United Airlines logo]()
$445
Last-minute flights from Dulles Intl to San DiegoDiscover last-minute flight deals from Dulles Intl to San Diego. Data last updated October 22, 2026 and is based on user searches.
Discover last-minute flight deals from Dulles Intl to San Diego. Data last updated October 22, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 10/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/89:06 pm -
2 stops22h 02m
Wed 11/114:53 pm -
2 stops15h 43m
Deal found 10/20![Frontier logo]()
$353
This Mytrip deal was found by Cheapflights users on 10/21. 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.
Tue 11/1012:31 pm -
2 stops14h 26m
Sun 11/159:32 am -
2 stops21h 49m
Deal found 10/21![Frontier logo]()
$351
This Mytrip deal was found by Cheapflights users on 10/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/116:07 pm -
2 stops28h 28m
Tue 11/246:30 am -
2 stops19h 40m
Deal found 10/20![Frontier logo]()
$346
This WAYA deal was found by Cheapflights users on 10/20. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1111:16 am -
1 stop25h 19m
Tue 11/248:50 am -
1 stop17h 20m
Deal found 10/20![Multiple Airlines logo]()
$348
This Kiwi.com deal was found by Cheapflights users on 10/20. 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 11/1112:31 pm -
1 stop23h 06m
Tue 11/174:53 pm -
2 stops15h 43m
Deal found 10/20![Frontier logo]()
$349
This Mytrip deal was found by Cheapflights users on 10/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/1312:31 pm -
2 stops24h 40m
Sun 11/159:32 am -
2 stops21h 49m
Deal found 10/20![Frontier logo]()
$340
This Delta deal was found by Cheapflights users on 10/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/157:00 am -
1 stop10h 58m
Wed 11/251:31 pm -
1 stop7h 16m
Deal found 10/21![Delta logo]()
$339
This Kiwi.com deal was found by Cheapflights users on 10/18. 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.
Mon 11/1612:31 pm -
2 stops14h 26m
Sun 11/2211:26 am -
1 stop14h 44m
Deal found 10/18![Frontier logo]()
$350
This Kiwi.com deal was found by Cheapflights users on 10/17. 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.
Mon 11/169:06 pm -
2 stops21h 52m
Tue 11/2411:26 am -
1 stop14h 44m
Deal found 10/17![Frontier logo]()
$354
This Booking.com deal was found by Cheapflights users on 10/21. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/197:46 am -
1 stop10h 01m
Fri 11/208:50 am -
1 stop17h 20m
Deal found 10/21![Multiple Airlines logo]()
$344
This United Airlines deal was found by Cheapflights users on 10/20. 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.
Thu 11/1912:45 pm -
Nonstop5h 43m
Tue 12/12:26 pm -
1 stop6h 58m
Deal found 10/20![United Airlines logo]()
$347
This Mytrip deal was found by Cheapflights users on 10/19. 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.
Thu 11/262:10 pm -
2 stops12h 47m
Wed 12/96:30 am -
2 stops29h 19m
Deal found 10/19![Frontier logo]()
$352
One-way flights from Dulles Intl to San DiegoSearch for one-way flight options from Dulles Intl to San Diego. Find affordable one-way fares based on user searches. Data last updated October 22, 2026.
Search for one-way flight options from Dulles Intl to San Diego. Find affordable one-way fares based on user searches. Data last updated October 22, 2026.
This United Airlines deal was found by Cheapflights users on 10/21. 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 11/215:50 pm -
Nonstop5h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![United Airlines logo]()
$179
This Kiwi.com deal was found by Cheapflights users on 10/19. 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.
Mon 11/239:35 pm -
2 stops20h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![Frontier logo]()
$180
This Kiwi.com deal was found by Cheapflights users on 10/20. 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 11/1912:31 pm -
1 stop23h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Frontier logo]()
$181
This Super.com deal was found by Cheapflights users on 10/18. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/251:09 pm -
1 stop21h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/18![Frontier logo]()
$184
This Kiwi.com deal was found by Cheapflights users on 10/20. 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.
Fri 1/1510:16 pm -
2 stops43h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Frontier logo]()
$188
This Delta deal was found by Cheapflights users on 10/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/135:14 pm -
1 stop8h 01m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Delta logo]()
$189
This Kiwi.com deal was found by Cheapflights users on 10/21. 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.
Fri 11/202:10 pm -
2 stops36h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Frontier logo]()
$190
This Kiwi.com deal was found by Cheapflights users on 10/19. 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.
Sun 12/1310:35 pm -
2 stops41h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![Multiple Airlines logo]()
$191
This Cheapflightsfares deal was found by Cheapflights users on 10/21. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/228:51 pm -
1 stop18h 33m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Frontier logo]()
$194
This Kiwi.com deal was found by Cheapflights users on 10/16. 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.
Mon 11/911:16 am -
2 stops31h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/16![Frontier logo]()
$195
This Kiwi.com deal was found by Cheapflights users on 10/20. 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 12/2110:59 pm -
2 stops27h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Frontier logo]()
$197
Find flight deals from Dulles Intl to San Diego
Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to San Diego (SAN). 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 October 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $339 (Delta) |
One-way from | $179 (United Airlines) |
Popular in | June |
Cheapest in | January |
Average price | $529 |
Good round-trip deal | $454 or less |
Good one-way deal | $243 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Dulles Intl to San Diego 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 October 22, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to San Diego that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Washington, D.C.San Diego
IAD Washington, D.C. Dulles Intl - SAN San Diego
IADSAN
Washington, D.C. Dulles Intl
Wed 12/9
6:42 pm-9:30 pm
Nonstop5h 48m
San Diego
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$179
Washington, D.C.San Diego
IAD Washington, D.C. Dulles Intl - SAN San Diego
IADSAN
Washington, D.C. Dulles Intl
Thu 11/26
5:00 pm-10:24 pm
1 stop8h 24m
San Diego
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$189
Washington, D.C.San Diego
IAD Washington, D.C. Dulles Intl - SAN San Diego
IADSAN
Washington, D.C. Dulles Intl
Sun 12/13
5:14 pm-10:15 pm
1 stop8h 01m
San Diego
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$189
Washington, D.C.San Diego
IAD Washington, D.C. Dulles Intl - SAN San Diego
IADSAN
Washington, D.C. Dulles Intl
Fri 12/4
7:00 am-2:51 pm
1 stop10h 51m
San Diego
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$189
Washington, D.C.San Diego
IAD Washington, D.C. Dulles Intl - SAN San Diego
IADSAN
Washington, D.C. Dulles Intl
Sun 11/15
5:50 pm-8:33 pm
Nonstop5h 43m
San Diego
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$199
Washington, D.C.San Diego
IAD Washington, D.C. Dulles Intl - SAN San Diego
IADSAN
Washington, D.C. Dulles Intl
Thu 12/24
7:13 pm-9:58 pm
Nonstop5h 45m
San Diego
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$199
Washington, D.C.San Diego
IAD Washington, D.C. Dulles Intl - SAN San Diego
IADSAN
Washington, D.C. Dulles Intl
Thu 1/7
6:53 pm-9:47 pm
Nonstop5h 54m
San Diego
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$199
Washington, D.C.San Diego
IAD Washington, D.C. Dulles Intl - SAN San Diego
IADSAN
Washington, D.C. Dulles Intl
Fri 11/20
6:39 am-11:31 am
1 stop7h 52m
San Diego
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$209
Washington, D.C.San Diego
IAD Washington, D.C. Dulles Intl - SAN San Diego
IADSAN
Washington, D.C. Dulles Intl
Fri 11/27
6:00 am-11:38 am
1 stop8h 38m
San Diego
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$220
Washington, D.C.San Diego
IAD Washington, D.C. Dulles Intl - SAN San Diego
IADSAN
Washington, D.C. Dulles Intl
Wed 12/9
8:37 am-11:21 am
Nonstop5h 44m
San Diego
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$244
Showing 1-10 of 24 resultsSorted by cheapest first
Compare providers for flights from Dulles Intl to San Diego
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 San Diego in October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy- | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-San Diego 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 Diego 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 Diego 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 Diego 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 Diego 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 San Diego
Have a flexible travel schedule? Discover the best time to fly to San Diego from Dulles Intl with our price prediction graph.
IAD-SAN
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 Diego
How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to San Diego?
Booking 53 days in advance of your planned departure date is, on average, the best time to get cheap flights from Washington, D.C. Dulles Intl Airport to San Diego. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to San Diego?
Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to San Diego (average of $389). Flying from Washington, D.C. Dulles Intl Airport to San Diego in June is currently the most expensive (average of $556). 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 SAN?
Find hourly flight availability from Dulles Intl to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 22, 2026.
When flying from Washington, D.C. Dulles Intl Airport to San Diego, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 29% versus a flight at noon.
What is the cheapest day to fly from Washington, D.C. Dulles Intl Airport to San Diego?
Use this chart to determine the cheapest time to fly round-trip from Dulles Intl to San Diego. Price data was last updated on October 17, 2026.
Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to San Diego flight should consider departing on Saturday at noon when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
The best insider tips for Washington, D.C. Dulles Intl Airport to San Diego 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 Diego trip
Our travel experts
Reviews of airlines servicing San Diego
Get insights into the airlines that provide service to San Diego. 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 San Diego. Reviews last updated October 22, 2026.
Read reviews from past customers who have flown Alaska Airlines,Delta, andUnited Airlines from Washington, D.C. Dulles Intl Airport to San Diego. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.0
Food
7.0
Overall
7.9
Boarding
8.1
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Entertainment
7.0
Food
7.0
Overall
7.9
Boarding
8.1
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Entertainment
7.0
Food
7.0
Overall
7.9
Boarding
8.1
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Entertainment
7.0
Food
7.0
Overall
7.9
Boarding
8.1
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Entertainment
7.0
Food
7.0
Overall
7.9
Boarding
8.1
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Entertainment
7.0
Food
7.0
Overall
7.9
Boarding
8.1
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Related info for your journey
Find useful and relevant information for your journey from Dulles Intl to San Diego. 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 Diego?
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Dulles Intl and San Diego flights
Browse other Dulles Intl and San Diego flight options. Last updated on October 22, 2026.
Other flights from Dulles Intl
Browse through other flights departing from Dulles Intl. Flights are based on user searches made on Cheapflights and were last updated on October 22, 2026.
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Top 6 airlines flying from Dulles Intl to San Diego
Discover the top 6 airlines that operate flights from Dulles Intl to San Diego. 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 October 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$192 | Average$408 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$237 | Average$395 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$256 | Average$406 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$269 | Average$497 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$276 | Average$375 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$278 | Average$517 | FlexibilityNo cancel fee | On-time71% |