$181+ Cheap flights from San Diego (SAN) to Dulles Intl (IAD)
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 9/25. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — IAD
Oct 8 — Oct 151
Round-trip
1 adult, Economy
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Find cheap flights from San Diego 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 Diego to Washington, D.C. Dulles Intl are usually found in October or May, booked 71 days in advance, depart on a Friday or Thursday and return on a Saturday
Cheap flight deals from San Diego to Dulles Intl
Cheapest
Best
Last-minute
One-way
Cheapest flights from San Diego to Dulles IntlExplore the most affordable flight options available from San Diego to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 8, 2026.
Explore the most affordable flight options available from San Diego to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 8, 2026.
This Delta deal was found by Cheapflights users on 9/7. 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.
Tue 10/66:57 pm -
2 stops13h 24m
Sat 10/177:05 am -
1 stop10h 59m
Deal found 9/7![Delta logo]()
$328
This Frontier deal was found by Cheapflights users on 9/3. 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 9/246:45 pm -
1 stop13h 48m
Mon 9/2812:30 pm -
1 stop8h 30m
Deal found 9/3![Frontier logo]()
$331
This Kiwi.com deal was found by Cheapflights users on 9/3. 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 10/128:34 pm -
1 stop30h 46m
Wed 10/217:50 am -
2 stops19h 06m
Deal found 9/3![Frontier logo]()
$332
This Kiwi.com deal was found by Cheapflights users on 9/3. 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 10/175:44 pm -
1 stop9h 36m
Wed 10/217:24 pm -
Nonstop5h 29m
Deal found 9/3![Multiple Airlines logo]()
$333
This Delta deal was found by Cheapflights users on 9/7. 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.
Mon 10/266:57 pm -
2 stops12h 15m
Sat 10/316:05 am -
2 stops11h 59m
Deal found 9/7![Delta logo]()
$334
This Expedia deal was found by Cheapflights users on 9/4. 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.
Wed 10/219:20 am -
1 stop11h 39m
Sat 10/246:00 am -
1 stop13h 49m
Deal found 9/4![Multiple Airlines logo]()
$336
This Delta deal was found by Cheapflights users on 9/3. 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.
Sat 10/106:15 am -
1 stop7h 01m
Tue 10/137:05 am -
1 stop10h 59m
Deal found 9/3![Delta logo]()
$337
This American Airlines deal was found by Cheapflights users on 9/5. 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.
Sat 10/1010:27 pm -
1 stop7h 17m
Sat 10/177:13 pm -
1 stop7h 25m
Deal found 9/5![American Airlines logo]()
$338
This Kiwi.com deal was found by Cheapflights users on 9/3. 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 10/128:34 pm -
1 stop30h 46m
Mon 10/199:06 pm -
2 stops21h 52m
Deal found 9/3![Frontier logo]()
$339
This Alaska Airlines deal was found by Cheapflights users on 9/7. 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 10/297:27 pm -
1 stop25h 32m
Sun 11/16:46 pm -
Nonstop5h 41m
Deal found 9/7![Alaska Airlines logo]()
$340
This Alaska Airlines deal was found by Cheapflights users on 9/7. 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 10/219:46 am -
Nonstop5h 04m
Mon 10/267:24 pm -
Nonstop5h 29m
Deal found 9/7![Alaska Airlines logo]()
$341
This Kiwi.com deal was found by Cheapflights users on 9/3. 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 9/305:54 pm -
1 stop9h 26m
Tue 10/66:00 am -
2 stops12h 59m
Deal found 9/3![Frontier logo]()
$342
Best flights from San Diego to Dulles IntlDiscover carefully curated flight deals from San Diego to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 8, 2026.
Discover carefully curated flight deals from San Diego to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 8, 2026.
This Alaska Airlines deal was found by Cheapflights users on 9/5. 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 10/305:20 pm -
1 stop9h 20m
Mon 11/26:46 pm -
Nonstop5h 41m
Deal found 9/5![Alaska Airlines logo]()
$340
This United Airlines deal was found by Cheapflights users on 9/3. 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 11/42:08 pm -
1 stop7h 22m
Mon 11/94:10 pm -
1 stop7h 26m
Deal found 9/3![United Airlines logo]()
$352
This Delta deal was found by Cheapflights users on 9/4. 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.
Tue 11/31:36 pm -
1 stop6h 59m
Fri 11/62:28 pm -
1 stop8h 44m
Deal found 9/4![Delta logo]()
$377
This Alaska Airlines deal was found by Cheapflights users on 9/7. 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 10/98:28 pm -
1 stop24h 31m
Tue 10/137:24 pm -
Nonstop5h 29m
Deal found 9/7![Alaska Airlines logo]()
$350
This United Airlines deal was found by Cheapflights users on 9/4. 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 10/291:10 pm -
Nonstop4h 56m
Sun 11/15:50 pm -
Nonstop5h 43m
Deal found 9/4![United Airlines logo]()
$357
This Delta deal was found by Cheapflights users on 9/5. 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.
Fri 10/306:57 pm -
2 stops12h 13m
Mon 11/27:05 am -
1 stop10h 59m
Deal found 9/5![Delta logo]()
$393
This Alaska Airlines deal was found by Cheapflights users on 9/5. 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 10/19:31 am -
1 stop11h 28m
Sun 10/47:24 pm -
Nonstop5h 29m
Deal found 9/5![Alaska Airlines logo]()
$380
This Alaska Airlines deal was found by Cheapflights users on 9/4. 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.
Mon 10/269:51 am -
2 stops16h 49m
Thu 10/297:24 pm -
Nonstop5h 29m
Deal found 9/4![Alaska Airlines logo]()
$414
This United Airlines deal was found by Cheapflights users on 9/6. 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 11/229:45 pm -
Nonstop4h 42m
Fri 11/271:15 pm -
1 stop8h 19m
Deal found 9/6![United Airlines logo]()
$459
This Alaska Airlines deal was found by Cheapflights users on 9/6. 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 9/2310:04 am -
Nonstop5h 10m
Wed 10/147:24 pm -
Nonstop5h 29m
Deal found 9/6![Alaska Airlines logo]()
$487
This Alaska Airlines deal was found by Cheapflights users on 9/4. 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.
Mon 12/219:50 am -
Nonstop5h 01m
Mon 12/287:04 pm -
Nonstop5h 45m
Deal found 9/4![Alaska Airlines logo]()
$508
Last-minute flights from San Diego to Dulles IntlDiscover last-minute flight deals from San Diego to Dulles Intl. Data last updated September 8, 2026 and is based on user searches.
Discover last-minute flight deals from San Diego to Dulles Intl. Data last updated September 8, 2026 and is based on user searches.
This Priceline deal was found by Cheapflights users on 9/3. 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.
Tue 9/155:54 pm -
1 stop9h 26m
Fri 10/97:24 pm -
Nonstop5h 29m
Deal found 9/3![Multiple Airlines logo]()
$409
This Frontier deal was found by Cheapflights users on 9/3. 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 9/176:45 pm -
1 stop13h 48m
Tue 10/66:00 am -
1 stop13h 59m
Deal found 9/3![Frontier logo]()
$344
This Frontier deal was found by Cheapflights users on 9/3. 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 9/176:45 pm -
1 stop13h 48m
Wed 10/76:00 am -
1 stop13h 59m
Deal found 9/3![Frontier logo]()
$368
This Kiwi.com deal was found by Cheapflights users on 9/3. 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 9/176:45 pm -
1 stop13h 48m
Mon 10/59:04 pm -
2 stops22h 55m
Deal found 9/3![Frontier logo]()
$377
This Kiwi.com deal was found by Cheapflights users on 9/3. 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 9/176:45 pm -
1 stop13h 48m
Sun 10/49:04 pm -
2 stops26h 13m
Deal found 9/3![Frontier logo]()
$393
This Kiwi.com deal was found by Cheapflights users on 9/3. 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 9/176:45 pm -
1 stop13h 48m
Thu 10/17:50 am -
2 stops19h 01m
Deal found 9/3![Frontier logo]()
$406
This Kiwi.com deal was found by Cheapflights users on 9/3. 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 9/176:45 pm -
1 stop13h 48m
Tue 10/67:24 pm -
Nonstop5h 29m
Deal found 9/3![Multiple Airlines logo]()
$407
This Expedia deal was found by Cheapflights users on 9/4. 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.
Fri 9/186:45 pm -
1 stop13h 48m
Mon 9/2812:30 pm -
1 stop8h 30m
Deal found 9/4![Frontier logo]()
$399
This Expedia deal was found by Cheapflights users on 9/6. 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.
Fri 9/186:45 pm -
1 stop13h 48m
Sun 9/2012:30 pm -
1 stop8h 30m
Deal found 9/6![Frontier logo]()
$415
One-way flights from San Diego to Dulles IntlSearch for one-way flight options from San Diego to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated September 8, 2026.
Search for one-way flight options from San Diego to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated September 8, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/3. 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 9/257:04 pm -
2 stops32h 16m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Frontier logo]()
$181
This Kiwi.com deal was found by Cheapflights users on 9/3. 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 10/59:03 pm -
1 stop30h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Frontier logo]()
$183
This Super.com deal was found by Cheapflights users on 9/4. 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.
Sat 9/265:54 pm -
1 stop9h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Frontier logo]()
$184
This Super.com deal was found by Cheapflights users on 9/7. 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.
Sat 10/35:54 pm -
1 stop9h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Frontier logo]()
$185
This Kiwi.com deal was found by Cheapflights users on 9/4. 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 9/249:03 pm -
2 stops41h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Frontier logo]()
$186
This Booking.com deal was found by Cheapflights users on 9/5. 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.
Wed 9/305:54 pm -
1 stop9h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Frontier logo]()
$187
This KAYAK deal was found by Cheapflights users on 9/7. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/71:18 pm -
1 stop6h 58m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Delta logo]()
$188
This Delta deal was found by Cheapflights users on 9/3. 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.
Fri 10/1610:05 pm -
1 stop10h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Delta logo]()
$189
This Super.com deal was found by Cheapflights users on 9/7. 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.
Thu 10/16:45 pm -
1 stop13h 48m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Frontier logo]()
$190
This Kiwi.com deal was found by Cheapflights users on 9/4. 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 10/238:34 pm -
1 stop30h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Frontier logo]()
$194
Find flight deals from San Diego to Dulles Intl
Discover tips and strategies to find the most affordable flight options for your journey from San Diego (SAN) 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 September 8, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $328 (Delta) |
One-way from | $181 (Kiwi.com) |
Popular in | March |
Cheapest in | October |
Average price | $424 |
Good round-trip deal | $412 or less |
Good one-way deal | $247 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from San Diego 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 7,457,451 searches. Data last updated September 8, 2026.
Use the filters below to find and compare flights from San Diego to Washington, D.C. Dulles Intl Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
San DiegoWashington, D.C.
SAN San Diego - IAD Washington, D.C. Dulles Intl
SANIAD
San Diego
Sun 11/1
10:25 pm-10:10 am
1 stop8h 45m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$189
San DiegoWashington, D.C.
SAN San Diego - IAD Washington, D.C. Dulles Intl
SANIAD
San Diego
Sun 11/8
9:45 pm-9:09 am
1 stop8h 24m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$199
San DiegoWashington, D.C.
SAN San Diego - IAD Washington, D.C. Dulles Intl
SANIAD
San Diego
Mon 11/23
2:08 pm-12:30 am
1 stop7h 22m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$204
San DiegoWashington, D.C.
SAN San Diego - IAD Washington, D.C. Dulles Intl
SANIAD
San Diego
Tue 11/10
7:20 am-11:47 pm
2 stops13h 27m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$227
Quickest round-trip
San DiegoWashington, D.C.
SAN San Diego - IAD Washington, D.C. Dulles Intl
SANIAD
San Diego
Wed 11/25
9:45 pm-5:27 am
Nonstop4h 42m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$239
San DiegoWashington, D.C.
SAN San Diego - IAD Washington, D.C. Dulles Intl
SANIAD
San Diego
Wed 10/7
9:45 pm-5:41 am
Nonstop4h 56m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$239
San DiegoWashington, D.C.
SAN San Diego - IAD Washington, D.C. Dulles Intl
SANIAD
San Diego
Tue 10/6
8:45 am-9:27 pm
2 stops9h 42m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$249
San DiegoWashington, D.C.
SAN San Diego - IAD Washington, D.C. Dulles Intl
SANIAD
San Diego
Wed 9/30
9:45 pm-5:41 am
Nonstop4h 56m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$249
San DiegoWashington, D.C.
SAN San Diego - IAD Washington, D.C. Dulles Intl
SANIAD
San Diego
Sat 10/31
12:37 pm-5:19 am
2 stops13h 42m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$259
San DiegoWashington, D.C.
SAN San Diego - IAD Washington, D.C. Dulles Intl
SANIAD
San Diego
Mon 10/12
9:45 pm-5:41 am
Nonstop4h 56m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$260
Showing 1-10 of 22 resultsSorted by cheapest first
Compare providers for flights from San Diego to Dulles 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 San Diego to Dulles Intl in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on San Diego-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Diego-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Diego-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on San Diego-Washington, D.C. Dulles 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 San Diego-Washington, D.C. Dulles 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 San Diego to Dulles Intl
Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from San Diego with our price prediction graph.
SAN-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.
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Everything you need to know about your flight from San Diego to Washington, D.C. Dulles Intl Airport
Prices
Airlines
Delays
How far ahead should I book a flight from San Diego to Washington, D.C. Dulles Intl Airport?
To ensure you get the cheapest price possible for a flight from San Diego to Washington, D.C. Dulles Intl Airport, you should look to book at least 70 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.
What is the cheapest month to book a flight from San Diego to Washington, D.C. Dulles Intl Airport?
Currently, October is the cheapest month in which you can book a flight from San Diego to Washington, D.C. Dulles Intl Airport (average of $351). Flying from San Diego to Washington, D.C. Dulles Intl Airport in March is currently the most expensive (average of $467). 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 SAN to IAD?
Find hourly flight availability from San Diego 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 September 8, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from San Diego to Washington, D.C. Dulles Intl Airport as you normally would.
How often are flights from San Diego to Washington, D.C. delayed?
About 9% of weekly flights between San Diego and Washington, D.C. have experienced delays in the past year, with the average delay time being 134 minutes.
What is the most punctual flight time for San Diego to Washington, D.C. flights?
Historically, flights departing at night 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?
Tuesday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on San Diego to Washington, D.C. flights?
Over the last year, United Airlines have had the lowest number of delays on this route, with just 9% of flights being delayed.
The best insider tips for San Diego to Washington, D.C. Dulles 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 San Diego to Washington, D.C. Dulles Intl Airport trip
Our travel experts
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 September 8, 2026.
See what other customers who have flown with Alaska Airlines,Delta, andUnited Airlines from San Diego to Washington, D.C. Dulles 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.
Comfort
7.8
Overall
7.9
Boarding
8.1
Crew
8.5
Food
7.0
Entertainment
7.0
Reviews
1 / 20
2.0
MediocreArt,Dec 2025
SAN - OGG
Comfort
7.8
Overall
7.9
Boarding
8.1
Crew
8.5
Food
7.0
Entertainment
7.0
Reviews
1 / 20
2.0
MediocreArt,Dec 2025
SAN - OGG
Comfort
7.8
Overall
7.9
Boarding
8.1
Crew
8.5
Food
7.0
Entertainment
7.0
Reviews
1 / 20
2.0
MediocreArt,Dec 2025
SAN - OGG
Comfort
7.8
Overall
7.9
Boarding
8.1
Crew
8.5
Food
7.0
Entertainment
7.0
Reviews
1 / 20
2.0
MediocreArt,Dec 2025
SAN - OGG
Comfort
7.8
Overall
7.9
Boarding
8.1
Crew
8.5
Food
7.0
Entertainment
7.0
Reviews
1 / 20
2.0
MediocreArt,Dec 2025
SAN - OGG
Comfort
7.8
Overall
7.9
Boarding
8.1
Crew
8.5
Food
7.0
Entertainment
7.0
Reviews
1 / 20
2.0
MediocreArt,Dec 2025
SAN - OGG
Related info for your journey
Find useful and relevant information for your journey from San Diego 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
Arlington
Owings Mills
Tysons
Lanham
Reston
Chantilly
Herndon
Rockville
Hyattsville
Fredericksburg
Woodbridge
Falls Church
Sterling
Hanover
Laurel
Oxon Hill
Clinton
Hunt Valley
Silver Spring
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Other flights to Dulles Intl
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San Diego and Dulles Intl flights
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Top 5 airlines flying from San Diego to Dulles Intl
Discover the top 5 airlines that operate flights from San Diego 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 7,457,451 searches. Data last updated September 8, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$153 | Average$215 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$237 | Average$386 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$249 | Average$474 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$256 | Average$397 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$326 | Average$517 | FlexibilityNo cancel fee | On-time71% |