$199+ 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 9/8. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — SAN
Sep 3 — Sep 101
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 Friday
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 August 4, 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 August 4, 2026.
This Alaska Airlines deal was found by Cheapflights users on 8/3. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/510:59 am -
Nonstop5h 38m
Wed 9/912:46 pm -
Nonstop5h 14m
Deal found 8/3![Alaska Airlines logo]()
$337
This Orbitz deal was found by Cheapflights users on 7/31. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1210:59 am -
Nonstop5h 38m
Sat 9/196:25 am -
1 stop7h 34m
Deal found 7/31![Multiple Airlines logo]()
$338
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/246:00 pm -
1 stop8h 51m
Sat 8/2912:46 pm -
Nonstop5h 14m
Deal found 7/30![Multiple Airlines logo]()
$339
This Kiwi.com deal was found by Cheapflights users on 8/4. 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.
Sun 8/231:59 pm -
2 stops36h 45m
Fri 8/286:25 am -
1 stop7h 34m
Deal found 8/4![Frontier logo]()
$340
This CheapOair deal was found by Cheapflights users on 8/1. 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 9/31:59 pm -
1 stop22h 06m
Tue 9/86:25 am -
1 stop26h 46m
Deal found 8/1![Frontier logo]()
$341
This Southwest deal was found by Cheapflights users on 8/4. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/144:00 pm -
1 stop10h 05m
Tue 10/208:20 am -
2 stops11h 35m
Deal found 8/4![Southwest logo]()
$342
This Kiwi.com deal was found by Cheapflights users on 7/31. 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.
Sat 10/176:00 pm -
1 stop8h 59m
Wed 10/2812:45 pm -
Nonstop5h 15m
Deal found 7/31![Multiple Airlines logo]()
$343
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/276:00 pm -
1 stop8h 51m
Sat 8/2912:46 pm -
Nonstop5h 14m
Deal found 7/30![Multiple Airlines logo]()
$344
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/261:59 pm -
1 stop12h 52m
Wed 9/212:46 pm -
Nonstop5h 14m
Deal found 7/30![Multiple Airlines logo]()
$345
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 8/206:00 pm -
1 stop8h 51m
Wed 8/266:25 am -
2 stops12h 34m
Deal found 8/3![Frontier logo]()
$346
This Southwest deal was found by Cheapflights users on 8/4. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/239:35 am -
2 stops11h 45m
Sat 9/266:20 am -
1 stop11h 30m
Deal found 8/4![Southwest logo]()
$348
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 August 4, 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 August 4, 2026.
This Alaska Airlines deal was found by Cheapflights users on 8/2. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/210:59 am -
Nonstop5h 38m
Wed 9/97:00 am -
1 stop7h 59m
Deal found 8/2![Alaska Airlines logo]()
$347
This Southwest deal was found by Cheapflights users on 7/31. 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 9/1910:40 am -
2 stops9h 30m
Sun 9/2710:40 pm -
1 stop6h 50m
Deal found 7/31![Southwest logo]()
$372
This Southwest deal was found by Cheapflights users on 8/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/254:35 pm -
2 stops8h 25m
Tue 9/299:05 am -
2 stops10h 15m
Deal found 8/3![Southwest logo]()
$377
This Alaska Airlines deal was found by Cheapflights users on 7/30. 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.
Sat 10/310:59 am -
Nonstop5h 38m
Mon 10/57:55 pm -
1 stop19h 02m
Deal found 7/30![Alaska Airlines logo]()
$400
This Southwest deal was found by Cheapflights users on 7/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/254:35 pm -
2 stops8h 25m
Mon 9/286:40 am -
1 stop8h 10m
Deal found 7/30![Southwest logo]()
$382
This Alaska Airlines deal was found by Cheapflights users on 8/2. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/410:59 am -
Nonstop5h 38m
Wed 9/912:46 pm -
Nonstop5h 14m
Deal found 8/2![Alaska Airlines logo]()
$422
This Southwest deal was found by Cheapflights users on 8/4. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/911:40 am -
2 stops9h 40m
Mon 9/1410:10 am -
2 stops9h 45m
Deal found 8/4![Southwest logo]()
$417
This Alaska Airlines deal was found by Cheapflights users on 7/31. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/910:59 am -
Nonstop5h 38m
Wed 10/1412:45 pm -
Nonstop5h 15m
Deal found 7/31![Alaska Airlines logo]()
$422
This Southwest deal was found by Cheapflights users on 8/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/194:20 pm -
2 stops9h 55m
Fri 10/238:40 am -
2 stops9h 50m
Deal found 8/3![Southwest logo]()
$417
This Southwest deal was found by Cheapflights users on 7/31. 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.
Thu 10/224:55 pm -
2 stops8h 45m
Sun 10/258:35 pm -
2 stops16h 05m
Deal found 7/31![Southwest logo]()
$438
This Southwest deal was found by Cheapflights users on 7/31. 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.
Mon 8/312:15 pm -
2 stops8h 40m
Thu 9/310:10 am -
2 stops9h 45m
Deal found 7/31![Southwest logo]()
$452
Last-minute flights from Reagan-National to San DiegoDiscover last-minute flight deals from Reagan-National to San Diego. Data last updated August 4, 2026 and is based on user searches.
Discover last-minute flight deals from Reagan-National to San Diego. Data last updated August 4, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 8/206:00 pm -
1 stop8h 51m
Wed 8/266:25 am -
2 stops12h 34m
Deal found 8/3![Frontier logo]()
$346
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/231:59 pm -
1 stop12h 52m
Fri 8/288:59 pm -
2 stops12h 52m
Deal found 7/30![Frontier logo]()
$340
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/246:00 pm -
1 stop8h 51m
Sat 8/2912:46 pm -
Nonstop5h 14m
Deal found 7/30![Multiple Airlines logo]()
$339
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/261:59 pm -
1 stop12h 52m
Wed 9/212:46 pm -
Nonstop5h 14m
Deal found 7/30![Multiple Airlines logo]()
$345
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/276:00 pm -
1 stop8h 51m
Sat 8/2912:46 pm -
Nonstop5h 14m
Deal found 7/30![Multiple Airlines logo]()
$344
This Jetabroad deal was found by Cheapflights users on 7/30. 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.
Fri 8/286:00 pm -
1 stop8h 51m
Sun 8/306:25 am -
1 stop7h 34m
Deal found 7/30![Frontier logo]()
$342
This Booking.com deal was found by Cheapflights users on 7/30. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/296:59 pm -
1 stop16h 49m
Sat 9/512:46 pm -
Nonstop5h 14m
Deal found 7/30![Alaska Airlines logo]()
$348
This CheapOair deal was found by Cheapflights users on 8/1. 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 9/31:59 pm -
1 stop22h 06m
Tue 9/86:25 am -
1 stop26h 46m
Deal found 8/1![Frontier logo]()
$341
This Alaska Airlines deal was found by Cheapflights users on 8/3. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/510:59 am -
Nonstop5h 38m
Wed 9/912:46 pm -
Nonstop5h 14m
Deal found 8/3![Alaska Airlines logo]()
$337
This Gotogate deal was found by Cheapflights users on 7/31. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/910:59 am -
Nonstop5h 38m
Mon 9/144:54 pm -
1 stop26h 05m
Deal found 7/31![Multiple Airlines logo]()
$343
This Priceline deal was found by Cheapflights users on 7/31. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/126:00 pm -
1 stop8h 51m
Tue 9/1512:46 pm -
Nonstop5h 14m
Deal found 7/31![Multiple Airlines logo]()
$338
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 August 4, 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 August 4, 2026.
This Mytrip deal was found by Cheapflights users on 7/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/810:59 am -
Nonstop5h 38m
Deal found 7/30![Alaska Airlines logo]()
$199
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 9/57:00 am -
2 stops11h 41m
Deal found 8/3![Frontier logo]()
$200
This Kiwi.com deal was found by Cheapflights users on 8/3. 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.
Sun 9/137:00 am -
2 stops38h 19m
Deal found 8/3![Frontier logo]()
$202
This Jetabroad deal was found by Cheapflights users on 8/3. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/177:00 am -
1 stop11h 59m
Deal found 8/3![Frontier logo]()
$203
This Southwest deal was found by Cheapflights users on 8/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/42:50 pm -
1 stop8h 10m
Deal found 8/3![Southwest logo]()
$204
This Southwest deal was found by Cheapflights users on 7/31. 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.
Thu 9/104:35 pm -
2 stops8h 25m
Deal found 7/31![Southwest logo]()
$209
This Super.com deal was found by Cheapflights users on 8/3. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/156:00 pm -
1 stop8h 51m
Deal found 8/3![Frontier logo]()
$211
This Super.com deal was found by Cheapflights users on 8/3. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/131:59 pm -
1 stop22h 11m
Deal found 8/3![Frontier logo]()
$216
This Delta deal was found by Cheapflights users on 8/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/156:10 am -
1 stop7h 10m
Deal found 8/2![Delta logo]()
$219
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/46:00 pm -
2 stops24h 41m
Deal found 8/2![Frontier logo]()
$223
This Southwest deal was found by Cheapflights users on 8/4. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/283:15 pm -
2 stops9h 05m
Deal found 8/4![Southwest logo]()
$224
This Super.com deal was found by Cheapflights users on 8/1. 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.
Fri 8/146:00 pm -
1 stop8h 51m
Deal found 8/1![Frontier logo]()
$226
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 August 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $337 (Alaska Airlines) |
One-way from | $199 (Mytrip) |
Popular in | May |
Cheapest in | January |
Average price | $447 |
Good round-trip deal | $371 or less |
Good one-way deal | $230 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 2,558,603 searches. Data last updated August 4, 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 - SAN
DCASAN
Washington, D.C. Reagan-National
Wed 9/2
10:59 am-1:37 pm
Nonstop5h 38m
San Diego
Wed 9/9
7:00 am-5:59 pm
1 stop7h 59m
$347
Washington, D.C.San Diego
DCA - SAN
DCASAN
Washington, D.C. Reagan-National
Sat 9/19
10:40 am-5:10 pm
2 stops9h 30m
San Diego
Sun 9/27
10:40 pm-8:30 am
1 stop6h 50m
$372
Washington, D.C.San Diego
DCA - SAN
DCASAN
Washington, D.C. Reagan-National
Fri 9/25
4:35 pm-10:00 pm
2 stops8h 25m
San Diego
Tue 9/29
9:05 am-10:20 pm
2 stops10h 15m
$377
Washington, D.C.San Diego
DCA - SAN
DCASAN
Washington, D.C. Reagan-National
Fri 9/25
4:35 pm-10:00 pm
2 stops8h 25m
San Diego
Mon 9/28
6:40 am-5:50 pm
1 stop8h 10m
$382
Washington, D.C.San Diego
DCA - SAN
DCASAN
Washington, D.C. Reagan-National
Sat 10/3
10:59 am-1:37 pm
Nonstop5h 38m
San Diego
Mon 10/5
7:55 pm-5:57 pm
1 stop19h 02m
$400
Washington, D.C.San Diego
DCA - SAN
DCASAN
Washington, D.C. Reagan-National
Wed 9/9
11:40 am-6:20 pm
2 stops9h 40m
San Diego
Mon 9/14
10:10 am-10:55 pm
2 stops9h 45m
$417
Washington, D.C.San Diego
DCA - SAN
DCASAN
Washington, D.C. Reagan-National
Mon 10/19
4:20 pm-11:15 pm
2 stops9h 55m
San Diego
Fri 10/23
8:40 am-9:30 pm
2 stops9h 50m
$417
Quickest round-trip
Washington, D.C.San Diego
DCA - SAN
DCASAN
Washington, D.C. Reagan-National
Fri 9/4
10:59 am-1:37 pm
Nonstop5h 38m
San Diego
Wed 9/9
12:46 pm-9:00 pm
Nonstop5h 14m
$422
Washington, D.C.San Diego
DCA - SAN
DCASAN
Washington, D.C. Reagan-National
Fri 10/9
10:59 am-1:37 pm
Nonstop5h 38m
San Diego
Wed 10/14
12:45 pm-9:00 pm
Nonstop5h 15m
$422
Washington, D.C.San Diego
DCA - SAN
DCASAN
Washington, D.C. Reagan-National
Thu 10/22
4:55 pm-10:40 pm
2 stops8h 45m
San Diego
Sun 10/25
8:35 pm-3:40 pm
2 stops16h 05m
$438
Showing 1-10 of 19 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 August.
| 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 August 4, 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 August 4, 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.
Comfort
8.0
Crew
8.6
Boarding
8.1
Food
7.0
Overall
8.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Crew
8.6
Boarding
8.1
Food
7.0
Overall
8.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Crew
8.6
Boarding
8.1
Food
7.0
Overall
8.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Crew
8.6
Boarding
8.1
Food
7.0
Overall
8.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Crew
8.6
Boarding
8.1
Food
7.0
Overall
8.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Crew
8.6
Boarding
8.1
Food
7.0
Overall
8.0
Entertainment
7.5
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
Poway
La Mesa
Coronado
Santee
San Ysidro
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 August 4, 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 August 4, 2026.
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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 August 4, 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 2,558,603 searches. Data last updated August 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$130 | Average$286 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$216 | Average$430 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$237 | Average$418 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$246 | Average$428 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$255 | Average$377 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$256 | Average$415 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$256 | Average$434 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$257 | Average$556 | FlexibilityNo cancel fee | On-timeN/A |