$185+ Cheap flights from Reagan-National (DCA) to San Diego (SAN)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/4. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — SAN
Oct 2 — Oct 91
Round-trip
1 adult, Economy
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Find cheap flights from Reagan-National 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. Reagan-National to San Diego are usually found in January or March, booked 82 days in advance, depart on a Thursday or Saturday and return on a Saturday
Cheap flight deals from Reagan-National to San Diego
Cheapest
Best
Last-minute
One-way
Cheapest flights from Reagan-National to San DiegoExplore the most affordable flight options available from Reagan-National to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 2, 2026.
Explore the most affordable flight options available from Reagan-National to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 2, 2026.
This Trip.com deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/231:00 pm -
1 stop13h 56m
Sun 10/256:25 am -
1 stop26h 39m
Deal found 9/1![Frontier logo]()
$336
This Delta deal was found by Cheapflights users on 8/28. 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 10/134:40 pm -
1 stop10h 02m
Tue 10/2012:38 pm -
1 stop7h 11m
Deal found 8/28![Delta logo]()
$337
This Frontier deal was found by Cheapflights users on 8/31. 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.
Mon 9/217:00 am -
1 stop11h 58m
Wed 9/306:25 am -
1 stop12h 34m
Deal found 8/31![Frontier logo]()
$338
This Jetabroad deal was found by Cheapflights users on 8/30. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/286:00 pm -
1 stop8h 51m
Thu 10/16:25 am -
1 stop12h 34m
Deal found 8/30![Frontier logo]()
$339
This Kiwi.com deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/266:00 pm -
1 stop8h 51m
Wed 9/307:04 pm -
2 stops38h 07m
Deal found 9/1![Frontier logo]()
$340
This Kiwi.com deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/286:00 pm -
1 stop8h 51m
Fri 10/26:54 pm -
2 stops19h 05m
Deal found 9/1![Frontier logo]()
$341
This Southwest deal was found by Cheapflights users on 8/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/303:50 pm -
1 stop7h 50m
Tue 10/68:20 am -
2 stops11h 35m
Deal found 8/29![Southwest logo]()
$342
This Expedia deal was found by Cheapflights users on 9/1. 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 9/227:00 am -
1 stop19h 51m
Sun 9/276:25 am -
1 stop26h 46m
Deal found 9/1![Frontier logo]()
$343
This Kiwi.com deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/266:00 pm -
1 stop8h 51m
Sat 10/36:54 pm -
2 stops38h 17m
Deal found 9/1![Frontier logo]()
$344
This Kiwi.com deal was found by Cheapflights users on 8/31. 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 11/66:00 pm -
2 stops19h 11m
Tue 11/106:25 am -
1 stop7h 22m
Deal found 8/31![Frontier logo]()
$345
This Kiwi.com deal was found by Cheapflights users on 9/1. 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 11/47:00 am -
1 stop11h 58m
Thu 11/57:33 pm -
2 stops23h 17m
Deal found 9/1![Frontier logo]()
$346
This Southwest deal was found by Cheapflights users on 8/31. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/34:00 pm -
2 stops8h 50m
Sat 11/77:00 am -
2 stops9h 55m
Deal found 8/31![Southwest logo]()
$347
Best flights from Reagan-National to San DiegoDiscover carefully curated flight deals from Reagan-National to San Diego that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 2, 2026.
Discover carefully curated flight deals from Reagan-National to San Diego that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 2, 2026.
This Southwest deal was found by Cheapflights users on 8/31. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/79:25 am -
2 stops11h 20m
Tue 11/109:15 am -
2 stops10h 40m
Deal found 8/31![Southwest logo]()
$347
This Alaska Airlines deal was found by Cheapflights users on 8/29. 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 10/2110:59 am -
Nonstop5h 38m
Fri 10/309:20 am -
1 stop9h 39m
Deal found 8/29![Alaska Airlines logo]()
$387
This United Airlines deal was found by Cheapflights users on 8/29. 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 11/1312:50 pm -
2 stops12h 37m
Sun 11/1510:30 pm -
1 stop8h 25m
Deal found 8/29![United Airlines logo]()
$532
This Southwest deal was found by Cheapflights users on 9/2. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/14:05 pm -
2 stops9h 50m
Tue 11/39:15 am -
2 stops9h 40m
Deal found 9/2![Southwest logo]()
$417
This Alaska Airlines deal was found by Cheapflights users on 8/30. 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 10/2110:59 am -
Nonstop5h 38m
Thu 10/2912:45 pm -
Nonstop5h 15m
Deal found 8/30![Alaska Airlines logo]()
$462
This Southwest deal was found by Cheapflights users on 8/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/312:05 pm -
2 stops9h 50m
Sun 12/68:45 am -
2 stops9h 10m
Deal found 8/28![Southwest logo]()
$427
This Southwest deal was found by Cheapflights users on 9/1. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/64:05 pm -
2 stops9h 50m
Sun 11/1512:10 pm -
2 stops7h 40m
Deal found 9/1![Southwest logo]()
$427
This Alaska Airlines deal was found by Cheapflights users on 8/30. 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 11/66:59 pm -
1 stop19h 44m
Tue 11/1012:58 pm -
Nonstop5h 02m
Deal found 8/30![Alaska Airlines logo]()
$470
This Alaska Airlines deal was found by Cheapflights users on 8/29. 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.
Sat 10/1010:59 am -
Nonstop5h 38m
Sat 10/179:20 am -
1 stop9h 39m
Deal found 8/29![Alaska Airlines logo]()
$472
This Southwest deal was found by Cheapflights users on 9/1. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/194:00 pm -
2 stops8h 50m
Tue 11/2410:40 pm -
1 stop6h 45m
Deal found 9/1![Southwest logo]()
$442
This Alaska Airlines deal was found by Cheapflights users on 8/30. 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.
Tue 9/2910:59 am -
Nonstop5h 38m
Tue 10/69:20 am -
1 stop9h 39m
Deal found 8/30![Alaska Airlines logo]()
$505
This Southwest deal was found by Cheapflights users on 8/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/252:50 pm -
1 stop8h 10m
Mon 9/288:40 am -
2 stops10h 45m
Deal found 8/28![Southwest logo]()
$537
Last-minute flights from Reagan-National to San DiegoDiscover last-minute flight deals from Reagan-National to San Diego. Data last updated September 2, 2026 and is based on user searches.
Discover last-minute flight deals from Reagan-National to San Diego. Data last updated September 2, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 8/28. 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.
Tue 9/157:00 am -
1 stop19h 51m
Thu 9/244:54 pm -
1 stop21h 05m
Deal found 8/28![Frontier logo]()
$348
This Frontier deal was found by Cheapflights users on 8/31. 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.
Mon 9/217:00 am -
1 stop11h 58m
Tue 9/296:25 am -
1 stop12h 34m
Deal found 8/31![Frontier logo]()
$338
This Expedia deal was found by Cheapflights users on 9/1. 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 9/227:00 am -
1 stop19h 51m
Sun 9/276:25 am -
1 stop26h 46m
Deal found 9/1![Frontier logo]()
$343
This Kiwi.com deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/266:00 pm -
1 stop8h 51m
Wed 9/307:04 pm -
2 stops38h 07m
Deal found 9/1![Frontier logo]()
$340
This Kiwi.com deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/266:00 pm -
1 stop8h 51m
Sat 10/36:54 pm -
2 stops38h 17m
Deal found 9/1![Frontier logo]()
$344
This Jetabroad deal was found by Cheapflights users on 8/30. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/286:00 pm -
1 stop8h 51m
Thu 10/16:25 am -
1 stop12h 34m
Deal found 8/30![Frontier logo]()
$339
This Kiwi.com deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/286:00 pm -
1 stop8h 51m
Fri 10/26:54 pm -
2 stops19h 05m
Deal found 9/1![Frontier logo]()
$341
This Kiwi.com deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/286:00 pm -
1 stop8h 51m
Mon 10/56:54 pm -
2 stops19h 05m
Deal found 8/29![Frontier logo]()
$345
This Southwest deal was found by Cheapflights users on 8/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/303:50 pm -
1 stop7h 50m
Tue 10/68:20 am -
2 stops11h 35m
Deal found 8/29![Southwest logo]()
$342
This Delta deal was found by Cheapflights users on 8/28. 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 10/134:40 pm -
1 stop10h 02m
Tue 10/2012:38 pm -
1 stop7h 11m
Deal found 8/28![Delta logo]()
$337
This Kiwi.com deal was found by Cheapflights users on 9/1. 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 10/147:00 am -
1 stop19h 56m
Mon 10/192:01 pm -
2 stops23h 55m
Deal found 9/1![Frontier logo]()
$347
This Trip.com deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/231:00 pm -
1 stop13h 56m
Sun 10/256:25 am -
1 stop26h 39m
Deal found 9/1![Frontier logo]()
$336
One-way flights from Reagan-National to San DiegoSearch for one-way flight options from Reagan-National to San Diego. Find affordable one-way fares based on user searches. Data last updated September 2, 2026.
Search for one-way flight options from Reagan-National to San Diego. Find affordable one-way fares based on user searches. Data last updated September 2, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/29. 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 10/46:00 pm -
2 stops42h 43m
Deal found 8/29![Frontier logo]()
$185
This Kiwi.com deal was found by Cheapflights users on 8/28. 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 9/247:00 am -
1 stop19h 51m
Deal found 8/28![Frontier logo]()
$186
This Kiwi.com deal was found by Cheapflights users on 9/1. 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 9/301:00 pm -
2 stops34h 17m
Deal found 9/1![Frontier logo]()
$194
This Super.com deal was found by Cheapflights users on 8/29. 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 10/87:00 am -
1 stop19h 56m
Deal found 8/29![Frontier logo]()
$195
This Super.com deal was found by Cheapflights users on 8/31. 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 9/196:00 pm -
1 stop8h 51m
Deal found 8/31![Frontier logo]()
$196
This Super.com deal was found by Cheapflights users on 8/30. 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.
Sun 9/207:00 am -
1 stop19h 51m
Deal found 8/30![Frontier logo]()
$197
This Expedia deal was found by Cheapflights users on 8/30. 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.
Sat 11/218:00 am -
1 stop19h 27m
Deal found 8/30![Frontier logo]()
$198
This Expedia deal was found by Cheapflights users on 8/31. 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 9/156:00 pm -
1 stop8h 51m
Deal found 8/31![Frontier logo]()
$199
This CheapOair deal was found by Cheapflights users on 9/1. 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 10/157:00 am -
1 stop19h 56m
Deal found 9/1![Frontier logo]()
$200
This Super.com deal was found by Cheapflights users on 9/1. 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 9/167:00 am -
1 stop19h 51m
Deal found 9/1![Frontier logo]()
$201
Find flight deals from Reagan-National to San Diego
Discover tips and strategies to find the most affordable flight options for your journey from Reagan-National (DCA) 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 September 2, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $336 (Trip.com) |
One-way from | $185 (Kiwi.com) |
Popular in | May |
Cheapest in | January |
Average price | $456 |
Good round-trip deal | $427 or less |
Good one-way deal | $244 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Reagan-National 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 September 2, 2026.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to San Diego that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Washington, D.C.San Diego
DCA Washington, D.C. Reagan-National - SAN San Diego
DCASAN
Washington, D.C. Reagan-National
Sat 11/7
9:25 am-5:45 pm
2 stops11h 20m
San Diego
Tue 11/10
9:15 am-10:55 pm
2 stops10h 40m
$347
Washington, D.C.San Diego
DCA Washington, D.C. Reagan-National - SAN San Diego
DCASAN
Washington, D.C. Reagan-National
Wed 10/21
10:59 am-1:37 pm
Nonstop5h 38m
San Diego
Fri 10/30
9:20 am-9:59 pm
1 stop9h 39m
$387
Washington, D.C.San Diego
DCA Washington, D.C. Reagan-National - SAN San Diego
DCASAN
Washington, D.C. Reagan-National
Sun 11/1
4:05 pm-10:55 pm
2 stops9h 50m
San Diego
Tue 11/3
9:15 am-9:55 pm
2 stops9h 40m
$417
Washington, D.C.San Diego
DCA Washington, D.C. Reagan-National - SAN San Diego
DCASAN
Washington, D.C. Reagan-National
Thu 12/3
12:05 pm-6:55 pm
2 stops9h 50m
San Diego
Sun 12/6
8:45 am-8:55 pm
2 stops9h 10m
$427
Washington, D.C.San Diego
DCA Washington, D.C. Reagan-National - SAN San Diego
DCASAN
Washington, D.C. Reagan-National
Fri 11/6
4:05 pm-10:55 pm
2 stops9h 50m
San Diego
Sun 11/15
12:10 pm-10:50 pm
2 stops7h 40m
$427
Washington, D.C.San Diego
DCA Washington, D.C. Reagan-National - SAN San Diego
DCASAN
Washington, D.C. Reagan-National
Thu 11/19
4:00 pm-9:50 pm
2 stops8h 50m
San Diego
Tue 11/24
10:40 pm-8:25 am
1 stop6h 45m
$442
Quickest round-trip
Washington, D.C.San Diego
DCA Washington, D.C. Reagan-National - SAN San Diego
DCASAN
Washington, D.C. Reagan-National
Wed 10/21
10:59 am-1:37 pm
Nonstop5h 38m
San Diego
Thu 10/29
12:45 pm-9:00 pm
Nonstop5h 15m
$462
Washington, D.C.San Diego
DCA Washington, D.C. Reagan-National - SAN San Diego
DCASAN
Washington, D.C. Reagan-National
Fri 11/6
6:59 pm-11:43 am
1 stop19h 44m
San Diego
Tue 11/10
12:58 pm-9:00 pm
Nonstop5h 02m
$470
Washington, D.C.San Diego
DCA Washington, D.C. Reagan-National - SAN San Diego
DCASAN
Washington, D.C. Reagan-National
Sat 10/10
10:59 am-1:37 pm
Nonstop5h 38m
San Diego
Sat 10/17
9:20 am-9:59 pm
1 stop9h 39m
$472
Washington, D.C.San Diego
DCA Washington, D.C. Reagan-National - SAN San Diego
DCASAN
Washington, D.C. Reagan-National
Tue 9/29
10:59 am-1:37 pm
Nonstop5h 38m
San Diego
Tue 10/6
9:20 am-9:59 pm
1 stop9h 39m
$505
Showing 1-10 of 23 resultsSorted by cheapest first
Compare providers for flights from Reagan-National 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 Reagan-National to San Diego in September.
| 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*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Washington, D.C. Reagan-National 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. Reagan-National Airport-San Diego flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Reagan-National 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. Reagan-National 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. Reagan-National 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 Reagan-National to San Diego
Have a flexible travel schedule? Discover the best time to fly to San Diego from Reagan-National with our price prediction graph.
DCA-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. Reagan-National Airport to San Diego
How far ahead should I book a flight from Washington, D.C. Reagan-National Airport to San Diego?
The best time to book flights from Washington, D.C. Reagan-National Airport to San Diego is 71 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. Reagan-National Airport to San Diego?
Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to San Diego (average of $297). Flying from Washington, D.C. Reagan-National Airport to San Diego in May is currently the most expensive (average of $502). 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 DCA to SAN?
Find hourly flight availability from Reagan-National 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 September 2, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Washington, D.C. Reagan-National Airport to San Diego as you normally would.
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 September 2, 2026.
See what other customers who have flown with Southwest,Alaska Airlines, andUnited Airlines from Washington, D.C. Reagan-National Airport to San Diego have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
8.0
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Food
7.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Overall
8.0
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Food
7.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Overall
8.0
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Food
7.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Overall
8.0
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Food
7.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Overall
8.0
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Food
7.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Overall
8.0
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Food
7.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Related info for your journey
Find useful and relevant information for your journey from Reagan-National 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?
Book flights to San Diego if you plan to visit one of these locationsEl Cajon
National City
Chula Vista
Coronado
Poway
San Ysidro
La Mesa
Santee
Julian
Lemon Grove
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Reagan-National and San Diego flights
Browse other Reagan-National and San Diego flight options. Last updated on September 2, 2026.
Other flights from Reagan-National
Browse through other flights departing from Reagan-National. Flights are based on user searches made on Cheapflights and were last updated on September 2, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to San Diego
Explore flights to San Diego departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 2, 2026.
Top 8 airlines flying from Reagan-National to San Diego
Discover the top 8 airlines that operate flights from Reagan-National 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 September 2, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$130 | Average$291 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$250 | Average$434 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$255 | Average$377 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$256 | Average$437 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$257 | Average$587 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$257 | Average$433 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$276 | Average$415 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$297 | Average$398 | FlexibilityNo cancel fee | On-time85% |