SAN - DCA

$179 Find Cheap Flights from San Diego to Reagan Washington National Airport - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Diego to Reagan-National departing on 8/14. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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Everything you should know

Cheapest round-trip
$331
Typical prices: $277-$477
Frontier
Tue 11/3Fri 11/13
SAN - DCA • 1 stop
Cheapest non-stop
$336
Typical prices: $337-$558
Alaska Airlines
Tue 9/15Tue 9/22
SAN - DCA • Non-stop
Top airlines
Cheapest • from $331 (round-trip)
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with Alaska Airlines. Average duration is 5h 18m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Avoid delays
Most punctual • 73% on-time
Best time • Fewest delays
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $309 (round-trip)
Shortest trip • 6h 10m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 41% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 22% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from San Diego to Reagan-National (SAN-DCA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Diego to Reagan-National that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from San Diego to Reagan-National

Tue, Nov 3 - Fri, Nov 13
Frontier Logo
6:25 am - 9:58 pm
SAN
-
DCA
12h 33m
1 stop
Frontier Logo
1:59 pm - 11:59 pm
DCA
-
SAN
13h 00m
1 stop
$331Frontier
Wed, Nov 4 - Fri, Nov 13
Frontier Logo
6:25 am - 9:58 pm
SAN
-
DCA
12h 33m
1 stop
Frontier Logo
6:00 pm - 11:59 pm
DCA
-
SAN
8h 59m
1 stop
$331Frontier
Sat, Sep 5 - Sat, Sep 12
Southwest Logo
10:40 pm - 8:40 am
SAN
-
DCA
7h 00m
1 stop
Southwest Logo
10:40 am - 5:10 pm
DCA
-
SAN
9h 30m
2 stops
$332Southwest
Sat, Sep 5 - Sat, Sep 12
Southwest Logo
9:05 am - 9:55 pm
SAN
-
DCA
9h 50m
1 stop
Southwest Logo
6:05 am - 2:35 pm
DCA
-
SAN
11h 30m
2 stops
$332Southwest
Wed, Aug 26 - Thu, Sep 3
American Airlines Logo
6:15 am - 4:29 pm
SAN
-
DCA
7h 14m
1 stop
American Airlines Logo
1:55 pm - 7:15 pm
DCA
-
SAN
8h 20m
1 stop
$332American Airlines
Wed, Oct 14 - Mon, Oct 19
Multiple Airlines Logo
12:45 pm - 9:00 pm
SAN
-
DCA
5h 15mnonstop
Multiple Airlines Logo
7:00 am - 11:59 pm
DCA
-
SAN
19h 59m
1 stop
$333Multiple Airlines
Wed, Sep 2 - Wed, Sep 9
Multiple Airlines Logo
12:46 pm - 9:00 pm
SAN
-
DCA
5h 14mnonstop
Multiple Airlines Logo
1:00 pm - 11:51 pm
DCA
-
SAN
13h 51m
1 stop
$333Multiple Airlines
Tue, Sep 15 - Tue, Sep 22
Alaska Airlines Logo
12:46 pm - 9:00 pm
SAN
-
DCA
5h 14mnonstop
Alaska Airlines Logo
10:59 am - 1:37 pm
DCA
-
SAN
5h 38mnonstop
$336Alaska Airlines
Tue, Nov 3 - Tue, Nov 10
Alaska Airlines Logo
12:55 pm - 9:00 pm
SAN
-
DCA
5h 05mnonstop
Alaska Airlines Logo
10:59 am - 1:47 pm
DCA
-
SAN
5h 48mnonstop
$337Alaska Airlines
Sun, Sep 13 - Sat, Sep 19
American Airlines Logo
10:46 pm - 9:59 am
SAN
-
DCA
8h 13m
1 stop
American Airlines Logo
2:54 pm - 9:30 pm
DCA
-
SAN
9h 36m
1 stop
$347American Airlines
Booking Insights

KAYAK's insights & trends for San Diego to Reagan-National flights

Get data-powered insights and trends into flights from San Diego to Reagan-National to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from San Diego to Washington, D.C. Reagan-National Airport?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from San Diego to Washington, D.C. Reagan-National Airport departing in November.

Flight prices are typical for this route right now.

Flights to Washington, D.C. Reagan-National Airport from San Diego usually cost between $276 and $477 in November.
The lowest price found in the past 5 days was $331 on Frontier (Nov 1-Nov 13).

What’s the cheapest day of the week to fly from San Diego to Reagan Washington National Airport?

The average price of all round-trip flights from San Diego to Washington, D.C. Reagan-National Airport clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Reagan Washington National Airport on a Friday, as we generally find the cheapest rates on that day for this route. On the other hand, Sunday is the most expensive day to fly from San Diego to Reagan Washington National Airport. For your return ticket, we recommend flying on a Thursday and avoiding Sundays for the best deals.

What is the cheapest month to fly from San Diego to Washington, D.C. Reagan-National Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Diego to Washington, D.C. Reagan-National Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from San Diego to Washington, D.C. Reagan-National Airport is January, where tickets cost $296 (return) on average. On the other hand, the most expensive months are July and June, where the average cost of round-trip tickets is $502 and $477 respectively.

Can I save money by flying with a layover from San Diego to Washington, D.C. Reagan-National Airport?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $407 on average.

How far in advance should I book a flight from San Diego to Washington, D.C. Reagan-National Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from San Diego to Washington, D.C. Reagan-National Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from San Diego to Washington, D.C. Reagan-National Airport, you should book around 4 weeks before departure, which saves you about 41% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 4 weeks before departure.

Expert advice

Expert advice for your flight from San Diego to Reagan-National

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Brandon Schultz

Brandon Schultz

Expert on SAN

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Ramsey Qubein

Ramsey Qubein

Expert on DCA

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Good to know

Low season

January

Cheapest flight

$179
Best time to beat the crowds with an average 23% drop in price.
Most popular time to fly with an average 1% increase in price.
Flight from San Diego to Reagan Washington National Airport

When to book flights from San Diego to Reagan-National

Are your dates flexible? Find out the best times to travel from San Diego to Reagan-National based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking San Diego to Reagan Washington National Airport flights

  • What is the cheapest flight from San Diego to Washington, D.C. Reagan-National Airport?

    In the last 5 days, the lowest price for a flight from San Diego to Washington, D.C. Reagan-National Airport was $179 for a one-way ticket and $331 for a round-trip.

  • Do I need a passport to fly between San Diego and Reagan Washington National Airport?

    No

  • Which airlines offer Wi-Fi service onboard planes from San Diego to Reagan Washington National Airport?

    Alaska Airlines, JetBlue, and Hawaiian Airlines offer inflight Wi-Fi service on the San Diego to Reagan Washington National Airport flight route.

  • Which aircraft models fly most regularly from San Diego to Reagan Washington National Airport?

    The Boeing 737-800 Passenger/BBJ2 (winglets) is the aircraft model that flies most regularly on the San Diego to Reagan Washington National Airport flight route.

  • Which airline alliances offer flights from San Diego to Reagan Washington National Airport?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between San Diego and Reagan Washington National Airport, with Star Alliance being the most commonly used for this route.

  • On which days can I fly direct from San Diego to Reagan Washington National Airport?

    There are nonstop flights from San Diego to Reagan Washington National Airport on a daily basis.

  • Which is the best airline for flights from San Diego to Washington, D.C., Southwest or Alaska Airlines?

    The two airlines most popular with KAYAK users for flights from San Diego to Washington, D.C. are Southwest and Alaska Airlines. With an average price for the route of $375 and an overall rating of 8.0, Southwest is the most popular choice. Alaska Airlines is also a great choice for the route, with an average price of $416 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from San Diego to Reagan Washington National Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from San Diego to Reagan Washington National Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San Diego to Reagan Washington National Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Reagan Washington National Airport from San Diego is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from San Diego to Reagan Washington National Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Reagan Washington National Airport with an airline and back to San Diego with another airline. Booking your flights between San Diego and DCA can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San Diego to Reagan Washington National Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Reagan Washington National Airport from San Diego up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from San Diego to Washington, D.C. Reagan-National Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for $228 or less one-way and $407 or less round-trip.

Prefer to fly direct from San Diego to Reagan Washington National Airport?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from San Diego to Washington, D.C. Reagan-National.
Find which airlines fly direct from San Diego Airport to Washington, D.C. Reagan-National Airport, which days they fly and book direct flights.

Direct departures

San Diego to Washington, D.C. Reagan-National

Monday

Alaska Airlines

Alaska Airlines

Tuesday

Alaska Airlines

Alaska Airlines

Wednesday

Alaska Airlines

Alaska Airlines

Thursday

Alaska Airlines

Alaska Airlines

Friday

Alaska Airlines

Alaska Airlines

Saturday

Alaska Airlines

Alaska Airlines

Sunday

Alaska Airlines

Alaska Airlines

See more direct flights

Direct returns

Washington, D.C. Reagan-National to San Diego

Monday

Alaska Airlines

Alaska Airlines

Tuesday

Alaska Airlines

Alaska Airlines

Wednesday

Alaska Airlines

Alaska Airlines

Thursday

Alaska Airlines

Alaska Airlines

Friday

Alaska Airlines

Alaska Airlines

Saturday

Alaska Airlines

Alaska Airlines

Sunday

Alaska Airlines

Alaska Airlines

See more direct flights

Reviews of the top 5 airlines serving from San Diego to Reagan-National

 
See real verified KAYAK customer reviews for airlines flying from San Diego to Washington, D.C.. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from San Diego to Reagan-National? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4229 reviews
8.1Boarding
8.0Comfort
7.5Entertainment
8.6Crew
7.0Food
Airline reviews

Red eye from San Diego. Temperature of the cabin was way too warm and the air duct flowed very little air.

6.0 GoodGordon, Jul 2026
SAN - MCO
Read more Southwest reviews

Red eye from San Diego. Temperature of the cabin was way too warm and the air duct flowed very little air.

Great job Southwest! My family doesn't fly often but we felt safe the whole time.

Comfortable. Easy. No problems. Just wish they had gf options for snacks.

The charges were ridiculous for an hour flight and the turbulence was very scary.

The seats are now more narrow. I paid for front row the seats in the front are even more narrow than before.

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

San Diego airport is brand new, spacious, airy and very smooth checkin at SW baggage drop.

The flight was delayed about 20 minutes, but this was an evening flight, so it comes as no surprise. This flight came a good 1.5 days ahead of hurricane Helene which was still far out in the gulf. However, the flight never removed the seated buckle light. The staff announced from the beginning that due to the bad weather (I suppose the hurricane a day and a half away) they would have to do an abbreviated service with water and a snack. I am fine with their water and snack offering, but this was one of the smoothest flights I've had in years. If Southwest believes a flight like this requires everyone to remain seated, then all of their flights should remain buckled for the entire flight. I cannot help but wonder if things like this are a sneaky way to cut back on expenses since the airline is currently under a lot of pressure to reduce costs.

Although the flight was delayed, but the crew was amazing. They did the best they could to make the time enjoyable.

My experience was find with Southwest. The only issue I have is...at the exact time for me to check in...I don't understand how I always end up in C.

Agent could not provide me a boarding pass for the second leg of my flights - yet with a partner airline. Not understood.

This was my first trip with Alaska Airlines (round trip DCA to San Diego). Despite a slight delay on the return flight, I feel compelled to post a RAVE review! I cannot praise the airline and the crew enough! Everyone was kind, professional, and courteous, every step of the way- excellent service, snacks, and entertainment! On both legs of the trip I inquired whether there were any free seating upgrades and my request were granted BOTH times! I’ve flown on other airlines where they won’t do that, even when those premium seats are empty. As a customer service professional myself, I can say I left my experience feeling like a valued customer and not just a number. I NEVER expected to praise an airline lol I’ll definitely go out of my way to fly with Alaska on future trips. Thank you for such an awesome experience!

The flights were all late and they would not refund my money

Comfort level was below par. Food selection was non-existent. Paying $35 for 1st bag is never appreciated. I will not fly them again. I am actually trying to change my return flight.

I recently traveled with my service animal, and before boarding, a gate agent kindly arranged for me to have an empty seat next to me to give my dog more space. However, once on board, a male crew member spoke to me in a rude and loud tone, insisting my dog stay on the floor or my lap—even after I explained what the gate agent had approved. His tone and behavior were unprofessional and made me feel uncomfortable in front of other passengers. I understand and respect airline policies, but I would appreciate if this could be reviewed to ensure better awareness and sensitivity toward passengers traveling with service animals. Thank you for your understanding.

A cheerful and effective crew. Tasty pre-order food options.

The flight was delayed by 3 hours and 30 minutes without any explanation.

I had a good experience and the crew was very nice and helpful.

don't like having to use my phone for entertainment

Cancelled. New itinerary for my original direct flight stopped in 2 cities and would have taken 19 hours. I would have left 36 hours after my initial flight had left. A mess. There was no way to cancel. No one to talk to.

Chaotic boarding at these gates, multiple gates squeezed in at the very end of a concourse, behind a restaurant. Agents gave up on boarding by individual zones. Flight itself was uneventful, which is all we hope for any more.

Flight delayed due to ground hold. Republic airways did a great job.

Very good flight. Crew was great. No issues and we even arrived early.

The flight was smooth, the crew was great but the plane was quite old

Loved the crew! Sucks that we went from 1 hour and 8 minute layover to a 3 hour layover. But weather sucks like that.

Flight was warm for first few hours and quite rough

Flight was delayed several times. At one point, they "pulled back" 15 minutes from the delayed boarding and sent a text saying we would board sooner than previously advised. The flight then was delayed again. And when we boarded, there was an unspecified technical issue which had us waiting in the plane for about an hour.

Delayed flight (1hour) plus a long layover after an overnight flight with no backup plane available.

Crew was excellent. Comfort seats not as nice as other kinds of planes.

The Dekta Rep that checked us in was great. She's very personable, pleasant, and can tell she enjoys her job.

Our flight gor canceled and there was no one to help us but told us to scan the qr code and fill the forms on-line. Very poor service especially we are tourists traveling to Washington DC for the 1st time.

Service was professional and quick. Premium economy seat was comfortable given the class

We were delayed for about an hour from taking off due to traffic control procedures at the destination airport. But once in the air, the flight went well. The crew members were great and provided cabin service despite moderate turbulence during much of the flight.

The flight crew where really good. Better then the crew from BNE to SFO

Very thoughtful flight attendant offered me water immediately since I had run to make my connection.

Not pleasant trip cross country when the entertainment and WiFi system not working. No entertainment for entirety of route. Staff was rather nonchalant in that they dismissed the problem due to age of plane. It would have been nice to know this up front so I could have come prepared to read or download movies before boarding Coincidentally or not, there was a similar issue with the entertainment system on my previous flight I took on my fist leg of the trip. There are no seat TVs, so you must rely on the app when it works. United can do better. Also, what use it it to pay for boarding group 2 when half of the passengers are in the same line as you?

Plane left & arrived early- 5 Crew great. Wi fi - paid for 2, only 1 worked - so so. Waste of $. Coolie was good

Luggage management is poor, my missing luggage is still lingering.

The entertainment wasn’t playing in the app or online.

Lost luggage again. Our second trip to Mykonos, and 2nd time no luggage.

Crew was kind of grumpy and there was no beverage service at all. Sodas were $4. Disappointing.

There's no seats that lean back with little leg space i wad uncomfortable the entire flight. Your charges for extra baggage is despicable and costly!!

There was no food and no entertainment, so I'm not sure why these are even in the survey, as my understanding is frontier does not ever offer food without a few, not even a snack, and there are no screens so unless the flight safety talk is our entertainment why ask how we liked it?. One of the flight attendants say in the back of the plane as people filed in to their seats, yelling orders about where to put baggage and telling people to hurry up. It was the least professional experience I've ever had on a flight.

The worst. We never made our connection and they did absolutely nothing to help us at the airport.

We had an awful experience getting our bags checked in. Frontier’s check in on the app manipulated us into buying the business package because that was the only option available for a checked bag which included two checked bags per person which we did not need. Upon arriving to the airport, we stood in line for what seemed like forever at the baggage check in and there was no one available at the counter. We were first in line and we were afraid we were going to miss our flight due to the baggage attendant being late. After realizing there were a lot of other people waiting at the baggage check in and no one available. I reached out to Frontier and could not get any customer service so I had to call the airport to page the baggage attendant to send someone to the counter to check in our bags before we were able to go through security , I finally spoke to the attendant at the counter and explained to her that we had to pay for two checked bags person a total of six bags when we only had a total of three bags between three people she said to reach out to Frontier and they would issue a refund for the three bags that we paid for and did not need. I reached out to Frontier which I was not able to reach anybody by phone so I had to go through their automated chat feature, which sent me around in circles until I finally reached a representative to assist me. I explained to them what happened and they explained that they were not able to assist me. I continued to push the issue with them as this was very frustrating and they finally put in a customer service ticket where we were issued a flight credit and we were so disappointed because after this experience, we NEVER want to fly Frontier again, and we do not want a credit that we will not use. Frontier charged us almost $500 for us to check three bags which is absolutely absurd! The customer service agents were not able to offer anything else other than a flight credit and I do not feel like my frustrations were truly heard , we will never use Frontier Airlines again ! Truly Theft by Manipulation! They should be ashamed!

Every day about it was very different all the boarding pass where all wrong l miss flight no refund all crazy

The trip was good but the last minute changes I didn’t like because I had already talked to the attendee and they didn’t help me with my ticket I was having trouble checking in and when the time was up they help me but charge me for that and last minute luggage it was a small bag. After I was in the airplane I realized you were charging because the flight was almost empty and you have to get the money some how. Thanks for everything.

Our flight was delayed by four hours without notice, the app for getting my boarding pass is super confusing, and I wasn’t able to check a suitcase without paying for a higher cost package

First the gate was a total nightmare-no chairs anywhere! So over crowded and only one bathroom and nightmare of food service - took forever and NOT one place to sit. No inflight entertainment and had to pay 60.00 for a small carry on. I will never fly Frontier again!

I didn't like anything about the flight It was my first time and definitely my last time boarding a frontier flight. Their counter agents need training and they need to learn to communicate regularly and respectfully

Everything you need to know for your flight from San Diego to Reagan-National

Information on your arrival and departure airports