$139+ Cheap flights from San Diego (SAN) to Reagan-National (DCA)
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 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — DCA
Feb 26 — Mar 51
1 adult, Economy
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Find cheap flights from San Diego to Reagan-National 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. Reagan-National are usually found in August or September, booked 48 days in advance, depart on a Friday or Thursday and return on a Friday
Cheap flight deals from San Diego to Reagan-National
Cheapest flights from San Diego to Reagan-NationalExplore the most affordable flight options available from San Diego to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 27, 2026.
Explore the most affordable flight options available from San Diego to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 27, 2026.
This Kiwi.com deal was found by Cheapflights users on 1/26. 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 2/208:35 am
SAN
- DCA
1 stop25h 25m
Frontier
Mon 2/236:00 pm
DCA
- SAN
2 stops29h 24m
Frontier
Deal found 1/26![Frontier logo]()
$231
This Southwest deal was found by Cheapflights users on 1/26. 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 2/248:35 am
SAN
- DCA
2 stops11h 45m
Southwest
Tue 3/39:30 am
DCA
- SAN
2 stops10h 15m
Southwest
Deal found 1/26![Southwest logo]()
$233
This Expedia deal was found by Cheapflights users on 1/25. 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 2/107:11 am
SAN
- DCA
1 stop11h 48m
Multiple Airlines
Wed 2/188:59 am
DCA
- SAN
Nonstop5h 44m
Multiple Airlines
Deal found 1/25![Multiple Airlines logo]()
$234
This Frontier deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/68:16 pm
SAN
- DCA
1 stop13h 46m
Frontier
Tue 2/102:00 pm
DCA
- SAN
1 stop10h 41m
Frontier
Deal found 1/26![Frontier logo]()
$235
This Frontier deal was found by Cheapflights users on 1/25. 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 2/511:49 am
SAN
- DCA
1 stop7h 10m
Frontier
Sun 2/88:00 am
DCA
- SAN
1 stop14h 21m
Frontier
Deal found 1/25![Frontier logo]()
$236
This CheapOair deal was found by Cheapflights users on 1/26. 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 2/2412:45 pm
SAN
- DCA
Nonstop5h 17m
Alaska Airlines
Tue 3/38:59 am
DCA
- SAN
Nonstop5h 44m
Alaska Airlines
Deal found 1/26![Alaska Airlines logo]()
$237
This Frontier deal was found by Cheapflights users on 1/26. 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.
Sat 1/3110:34 am
SAN
- DCA
1 stop8h 25m
Frontier
Sat 2/142:00 pm
DCA
- SAN
1 stop13h 08m
Frontier
Deal found 1/26![Frontier logo]()
$241
This Travelocity deal was found by Cheapflights users on 1/27. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/1911:59 am
SAN
- DCA
1 stop7h 00m
Multiple Airlines
Sun 2/228:59 am
DCA
- SAN
Nonstop5h 44m
Multiple Airlines
Deal found 1/27![Multiple Airlines logo]()
$243
This Trip.com deal was found by Cheapflights users on 1/25. 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.
Sat 2/288:44 pm
SAN
- DCA
1 stop8h 19m
Multiple Airlines
Sat 3/76:00 pm
DCA
- SAN
1 stop9h 08m
Multiple Airlines
Deal found 1/25![Multiple Airlines logo]()
$244
This CheapOair deal was found by Cheapflights users on 1/25. 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.
Fri 2/68:16 pm
SAN
- DCA
1 stop17h 43m
Frontier
Mon 2/96:00 pm
DCA
- SAN
1 stop30h 41m
Frontier
Deal found 1/25![Frontier logo]()
$246
This American Airlines deal was found by Cheapflights users on 1/27. 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.
Fri 3/610:35 pm
SAN
- DCA
1 stop7h 24m
American Airlines
Wed 3/112:16 pm
DCA
- SAN
1 stop8h 07m
American Airlines
Deal found 1/27![American Airlines logo]()
$247
This Expedia deal was found by Cheapflights users on 1/26. 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 2/2012:45 pm
SAN
- DCA
Nonstop5h 17m
Multiple Airlines
Mon 2/236:00 pm
DCA
- SAN
1 stop30h 41m
Multiple Airlines
Deal found 1/26![Multiple Airlines logo]()
$248
Find flight deals from San Diego to Reagan-National
Discover tips and strategies to find the most affordable flight options for your journey from San Diego (SAN) to Reagan-National (DCA). 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 January 27, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $231 (Kiwi.com) |
One-way from | $139 (Expedia) |
Popular in | June |
Cheapest in | August |
Average price | $330 |
Good round-trip deal | $266 or less |
Good one-way deal | $158 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from San Diego to Reagan-National 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 January 27, 2026.
Use the filters below to find and compare flights from San Diego to Washington, D.C. Reagan-National Airport that are best for you.
Fly from
San Diego
Fly to
Reagan-National
Route
Depart
Return
Price
San DiegoWashington, D.C.
SAN - DCA
SANDCA
San Diego
Sat 2/14
12:45 pm-9:02 pm
Nonstop5h 17m
Washington, D.C. Reagan-National
Tue 2/17
8:59 am-11:43 am
Nonstop5h 44m
$237
San DiegoWashington, D.C.
SAN - DCA
SANDCA
San Diego
Wed 2/25
12:45 pm-9:02 pm
Nonstop5h 17m
Washington, D.C. Reagan-National
Tue 3/3
8:59 am-11:43 am
Nonstop5h 44m
$237
San DiegoWashington, D.C.
SAN - DCA
SANDCA
San Diego
Sat 3/7
7:10 am-6:35 pm
1 stop8h 25m
Washington, D.C. Reagan-National
Sun 3/15
3:45 pm-8:10 pm
1 stop7h 25m
$256
San DiegoWashington, D.C.
SAN - DCA
SANDCA
San Diego
Wed 3/11
12:45 pm-9:02 pm
Nonstop5h 17m
Washington, D.C. Reagan-National
Wed 3/25
8:59 am-11:39 am
Nonstop5h 40m
$257
San DiegoWashington, D.C.
SAN - DCA
SANDCA
San Diego
Wed 2/25
12:45 pm-9:02 pm
Nonstop5h 17m
Washington, D.C. Reagan-National
Sat 2/28
8:59 am-11:43 am
Nonstop5h 44m
$257
San DiegoWashington, D.C.
SAN - DCA
SANDCA
San Diego
Sat 2/14
12:45 pm-9:02 pm
Nonstop5h 17m
Washington, D.C. Reagan-National
Sun 2/15
8:59 am-11:43 am
Nonstop5h 44m
$257
San DiegoWashington, D.C.
SAN - DCA
SANDCA
San Diego
Sat 2/28
8:40 am-6:20 pm
1 stop6h 40m
Washington, D.C. Reagan-National
Sat 3/7
3:45 pm-11:25 pm
2 stops10h 40m
$272
San DiegoWashington, D.C.
SAN - DCA
SANDCA
San Diego
Thu 2/19
12:45 pm-9:02 pm
Nonstop5h 17m
Washington, D.C. Reagan-National
Mon 2/23
8:59 am-11:43 am
Nonstop5h 44m
$277
San DiegoWashington, D.C.
SAN - DCA
SANDCA
San Diego
Thu 3/12
12:45 pm-9:02 pm
Nonstop5h 17m
Washington, D.C. Reagan-National
Wed 3/25
8:59 am-11:39 am
Nonstop5h 40m
$277
San DiegoWashington, D.C.
SAN - DCA
SANDCA
San Diego
Sat 2/14
12:45 pm-9:02 pm
Nonstop5h 17m
Washington, D.C. Reagan-National
Mon 2/16
8:59 am-11:43 am
Nonstop5h 44m
$277
Showing 1-10 of 18 results
Compare providers for flights from San Diego to Reagan-National
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 Reagan-National in January.
| 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 Accuracy1 star | Trust Score*2 stars |
- Most accurate provider: When it comes to deals on San Diego-Washington, D.C. Reagan-National 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. Reagan-National Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Diego-Washington, D.C. Reagan-National 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. Reagan-National 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. Reagan-National 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 Reagan-National
Have a flexible travel schedule? Discover the best time to fly to Reagan-National from San Diego with our price prediction graph.
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 San Diego to Washington, D.C. Reagan-National Airport
Prices
Airlines
Delays
How far ahead should I book a flight from San Diego to Washington, D.C. Reagan-National Airport?
Use this chart to determine the optimal time to book a round-trip flight from San Diego to Reagan-National. Price data was last updated on January 23, 2026.
The price you pay for your flight from San Diego to Washington, D.C. Reagan-National Airport may vary depending on when you book. For the best chance of a lower fare, look to book 48 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from San Diego to Washington, D.C. Reagan-National Airport?
Currently, June is the cheapest month in which you can book a flight from San Diego to Washington, D.C. Reagan-National Airport (average of $99). Flying from San Diego to Washington, D.C. Reagan-National Airport in July is currently the most expensive (average of $233). 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 DCA?
Find hourly flight availability from San Diego to Reagan-National. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 27, 2026.
When flying from San Diego to Washington, D.C. Reagan-National Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
How often are flights from San Diego to Washington, D.C. delayed?
About 26% of weekly flights between San Diego and Washington, D.C. have experienced delays in the past year, with the average delay time being 142 minutes.
What is the most punctual flight time for San Diego to Washington, D.C. flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Saturday 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, Alaska Airlines have had the lowest number of delays on this route, with just 26% of flights being delayed.
Reviews of airlines servicing Reagan-National
Get insights into the airlines that provide service to Reagan-National. 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 Reagan-National. Reviews last updated January 27, 2026.
Read reviews from past customers who have flown Alaska Airlines, Southwest, and Hawaiian Airlines from San Diego to Washington, D.C. Reagan-National Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Crew
8.5
Entertainment
7.0
Overall
8.0
Comfort
7.8
Food
7.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Boarding
8.1
Crew
8.5
Entertainment
7.0
Overall
8.0
Comfort
7.8
Food
7.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Boarding
8.1
Crew
8.5
Entertainment
7.0
Overall
8.0
Comfort
7.8
Food
7.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Boarding
8.1
Crew
8.5
Entertainment
7.0
Overall
8.0
Comfort
7.8
Food
7.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Boarding
8.1
Crew
8.5
Entertainment
7.0
Overall
8.0
Comfort
7.8
Food
7.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Boarding
8.1
Crew
8.5
Entertainment
7.0
Overall
8.0
Comfort
7.8
Food
7.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Related info for your journey
Find useful and relevant information for your journey from San Diego to Reagan-National. 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. Reagan-National Airport?
Book flights to Washington, D.C. Reagan-National Airport if you plan to visit one of these locationsAlexandria
Woodbridge
Tysons
Arlington
Owings Mills
Springfield
Silver Spring
Herndon
Fredericksburg
Hanover
Linthicum Heights
Rockville
Laurel
Towson
Manassas
Largo
Bowie
McLean
Clinton
Upper Marlboro
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Alternative routes for San Diego to Reagan-National
See prices for flight routes from nearby airports that may be better suited for you.
Top 7 airlines flying from San Diego to Reagan-National
Discover the top 7 airlines that operate flights from San Diego to Reagan-National. 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 January 27, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$138 | Average$260 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$168 | Average$368 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$169 | Average$340 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$222 | Average$378 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$237 | Average$394 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$256 | Average$376 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$276 | Average$380 | FlexibilityNo cancel fee | On-time69% |