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Cheap Flights from Washington D.C. (DCA) to San Diego (SAN)

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      Travellers and cabin class, 1 Adult, Economy
      Alaska Airlines

      Compare Washington Ronald Reagan to San Diego International flight deals

      Find the cheapest month or even day of the year to fly to San Diego International

      Book the best San Diego International fare with no extra fees

      Flight deals from Washington Ronald Reagan to San Diego International

      Looking for a cheap last-minute deal or the best return flight from Washington Ronald Reagan Airport to San Diego International Airport? If you want to travel next month, return fares start from $412. Find the lowest prices on one-way and return tickets right here.
      San Diego.$386 per passenger.Departing Wed, 4 Nov, returning Mon, 9 Nov.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Washington Ronald Reagan on Wed, 4 Nov, arriving in San Diego International.Inbound indirect flight with Frontier Airlines, departs from San Diego International on Mon, 9 Nov, arriving in Washington Ronald Reagan.Price includes taxes and charges.From $386, select.
      San Diego.$412 per passenger.Departing Wed, 28 Oct, returning Fri, 30 Oct.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Washington Ronald Reagan on Wed, 28 Oct, arriving in San Diego International.Inbound indirect flight with Frontier Airlines, departs from San Diego International on Fri, 30 Oct, arriving in Washington Ronald Reagan.Price includes taxes and charges.From $412, select.
      San Diego.$413 per passenger.Departing Fri, 23 Oct, returning Mon, 2 Nov.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Washington Ronald Reagan on Fri, 23 Oct, arriving in San Diego International.Inbound indirect flight with Frontier Airlines, departs from San Diego International on Mon, 2 Nov, arriving in Washington Ronald Reagan.Price includes taxes and charges.From $413, select.
      San Diego.$442 per passenger.Departing Tue, 10 Nov, returning Tue, 1 Dec.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Washington Ronald Reagan on Tue, 10 Nov, arriving in San Diego International.Inbound indirect flight with Frontier Airlines, departs from San Diego International on Tue, 1 Dec, arriving in Washington Ronald Reagan.Price includes taxes and charges.From $442, select.
      San Diego.$442 per passenger.Departing Wed, 30 Sep, returning Thu, 1 Oct.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Washington Ronald Reagan on Wed, 30 Sep, arriving in San Diego International.Inbound indirect flight with Frontier Airlines, departs from San Diego International on Thu, 1 Oct, arriving in Washington Ronald Reagan.Price includes taxes and charges.From $442, select.
      San Diego.$457 per passenger.Departing Wed, 9 Dec, returning Fri, 11 Dec.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Washington Ronald Reagan on Wed, 9 Dec, arriving in San Diego International.Inbound indirect flight with Frontier Airlines, departs from San Diego International on Fri, 11 Dec, arriving in Washington Ronald Reagan.Price includes taxes and charges.From $457, select.
      San Diego.$468 per passenger.Departing Tue, 5 Jan, returning Sat, 9 Jan.Return flight with Delta.Outbound indirect flight with Delta, departs from Washington Ronald Reagan on Tue, 5 Jan, arriving in San Diego International.Inbound indirect flight with Delta, departs from San Diego International on Sat, 9 Jan, arriving in Washington Ronald Reagan.Price includes taxes and charges.From $468, select.
      San Diego.$469 per passenger.Departing Sat, 30 Jan, returning Sat, 6 Feb.Return flight with United.Outbound indirect flight with United, departs from Washington Ronald Reagan on Sat, 30 Jan, arriving in San Diego International.Inbound indirect flight with United, departs from San Diego International on Sat, 6 Feb, arriving in Washington Ronald Reagan.Price includes taxes and charges.From $469, select.
      San Diego.$470 per passenger.Departing Sat, 26 Sep, returning Tue, 29 Sep.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Washington Ronald Reagan on Sat, 26 Sep, arriving in San Diego International.Inbound indirect flight with Frontier Airlines, departs from San Diego International on Tue, 29 Sep, arriving in Washington Ronald Reagan.Price includes taxes and charges.From $470, select.
      San Diego.$524 per passenger.Departing Thu, 4 Feb, returning Mon, 8 Feb.Return flight with Delta.Outbound indirect flight with Delta, departs from Washington Ronald Reagan on Thu, 4 Feb, arriving in San Diego International.Inbound indirect flight with Delta, departs from San Diego International on Mon, 8 Feb, arriving in Washington Ronald Reagan.Price includes taxes and charges.From $524, select.
      San Diego.$546 per passenger.Departing Fri, 26 Feb, returning Mon, 1 Mar.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Washington Ronald Reagan on Fri, 26 Feb, arriving in San Diego International.Inbound indirect flight with Southwest Airlines, departs from San Diego International on Mon, 1 Mar, arriving in Washington Ronald Reagan.Price includes taxes and charges.From $546, select.
      San Diego.$551 per passenger.Departing Wed, 30 Dec, returning Tue, 5 Jan.Return flight with Delta.Outbound indirect flight with Delta, departs from Washington Ronald Reagan on Wed, 30 Dec, arriving in San Diego International.Inbound indirect flight with Delta, departs from San Diego International on Tue, 5 Jan, arriving in Washington Ronald Reagan.Price includes taxes and charges.From $551, select.
      San Diego.$551 per passenger.Departing Wed, 10 Mar, returning Wed, 17 Mar.Return flight with Delta.Outbound indirect flight with Delta, departs from Washington Ronald Reagan on Wed, 10 Mar, arriving in San Diego International.Inbound indirect flight with Delta, departs from San Diego International on Wed, 17 Mar, arriving in Washington Ronald Reagan.Price includes taxes and charges.From $551, select.
      San Diego.$556 per passenger.Departing Fri, 11 Dec, returning Tue, 15 Dec.Return flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departs from Washington Ronald Reagan on Fri, 11 Dec, arriving in San Diego International.Inbound direct flight with Alaska Airlines departs from San Diego International on Tue, 15 Dec, arriving in Washington Ronald Reagan.Price includes taxes and charges.From $556, select.
      San Diego.$623 per passenger.Departing Mon, 10 May, returning Fri, 21 May.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Washington Ronald Reagan on Mon, 10 May, arriving in San Diego International.Inbound indirect flight with Southwest Airlines, departs from San Diego International on Fri, 21 May, arriving in Washington Ronald Reagan.Price includes taxes and charges.From $623, select.
      San Diego.$623 per passenger.Departing Mon, 12 Apr, returning Fri, 23 Apr.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Washington Ronald Reagan on Mon, 12 Apr, arriving in San Diego International.Inbound indirect flight with Southwest Airlines, departs from San Diego International on Fri, 23 Apr, arriving in Washington Ronald Reagan.Price includes taxes and charges.From $623, select.
      How did we find these deals? The deals you see here are the lowest prices for flight tickets from Washington Ronald Reagan to San Diego International found in the last 4 days, and are subject to change and availability.

      Find the cheapest month to fly from Washington Ronald Reagan to San Diego International

      We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Washington Ronald Reagan to San Diego International flights are currently cheapest in November.
      Sep
      from $470
      Oct
      from $412
      Nov
      from $386
      Dec
      from $457
      Jan
      from $468
      Feb
      from $524
      Mar
      from $551
      Apr
      from $623
      May
      from $623
      Jun
      from $662
      Jul
      from $804
      Aug
      Find prices

      Direct flights from Washington Ronald Reagan to San Diego International

      Alaska Airlines

      Washington Ronald Reagan to San Diego International: Alternative routes

      Compare routes from Washington Ronald Reagan to San Diego below. You may find an airport to fly into that's cheaper, faster, or easier than San Diego International.

      San Diego International

      4km from central San Diego
      ClosestCheapest
      from $386
      Search flights

      McClellan-Palomar

      48km from central San Diego
      from $1,301
      Search flights

      Washington D.C. to San Diego: Flight information

      The things to know before you go.
      Cheapest flight found$386
      Cheapest month to flyNovember
      Average flight time5 hrs, 50 mins
      Most popular airlineAlaska Airlines
      Average flights per week8

      Finding cheap flights from Washington Ronald Reagan to San Diego International: Frequently asked questions

      The best price we found for a return flight from Washington Ronald Reagan to San Diego International is $386. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
      5 hours and 50 minutes is the average flight time from Washington Ronald Reagan to San Diego International.
      Alaska Airlines flies direct from Washington Ronald Reagan to San Diego International.
      As of September 2026, there are 8 flights per week flying from Washington Ronald Reagan to San Diego International.
      The cheapest month to fly from Washington Ronald Reagan to San Diego International is usually November.
      After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Washington Ronald Reagan Airport to San Diego International Airport on Wednesday, 4 November 2026.
      Yes – the average flight time is 5 hours and 50 minutes.
      We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to San Diego International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

      We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to San Diego is around 40 days in advance, so don’t leave your flight to the last minute.

      Currently, Frontier Airlines and Alaska Airlines offer the cheapest flight tickets to San Diego International.

      Travelling from Washington Ronald Reagan Airport (DCA) to San Diego International Airport (SAN): what you need to know

      • Around 5 hours 30 minutes is how long you can expect to be in the air on a direct flight from Washington Ronald Reagan Airport to San Diego International Airport.

      • San Diego is three hours behind Washington DC and observes the UTC-8 timezone.

      • Take your pick of six weekly Washington Ronald Reagan Airport to San Diego International Airport flights. The 08:30 departure with Alaska Airlines is the earliest flight you can take. Alaska Airlines operates the last service of the day at 09:59.

      • Give yourself plenty of time to catch your DCA to SAN flight. As a general rule, arrive two hours before international departures and an hour ahead for domestic flights.

      • During popular months like August, you'll want to get to the airport earlier. Plan to arrive two hours before a domestic departure and four hours ahead for international flights when you travel during a peak period in general.

      • Jetting into San Diego (and then seeing more of the United States!) is a cinch with Alaska Airlines. This popular airline has direct flights from Washington Ronald Reagan Airport to San Diego International Airport.

      • Alaska Airlines is the airline with the highest passenger demand for this route.

      • Alaska Airlines is the most punctual carrier operating DCA to SAN flights.

      • Consider adding a stopover when booking your ticket from Washington Ronald Reagan Airport to San Diego International Airport. Just deselect 'Direct flights only' to break up your trip, or visit a new city along the way. Here are some options between DCA and SAN:

        • Phoenix Sky Harbour Airport

        • Chicago Midway Airport

        • Dallas Love Field Airport

      How to find the cheapest flights from Washington Ronald Reagan Airport (DCA) to San Diego International Airport (SAN)

      • The lowest price we've seen for a one-way Washington Ronald Reagan Airport to San Diego International Airport flight is $193. A round-trip ticket is currently $386. Depending on the availability when you book, these fares may change.

      • To pick up cheap tickets from DCA to SAN, book as early as you can. Airlines generally offer their best fares when flights are first made available.

      • May is the cheapest month for flights from Washington Ronald Reagan Airport to San Diego International Airport. If you prefer to travel during a different time of year, the 'Whole month' tool will show you the lowest prices for each month.

      • You won't have to check back in every day to find out if fares have gone down when you create a Price Alert. We'll notify you the moment there's a change in price on cheap flights from DCA to SAN.

      • Lock in the right flight for you by using the filters. To see the 'Best,' 'Fastest' or 'Cheapest' flights from Washington Ronald Reagan Airport to San Diego International Airport, use the 'Sort by' tool. You can also filter results by airline, departure and arrival times, and number of stops.

      Handy information about Washington Ronald Reagan Airport (DCA)

      • DCA's address is 1 Aviation Circle.

      • 71% of flights taking off from Washington Ronald Reagan Airport touch down at their destination on time.

      • Washington Ronald Reagan Airport is around 6 kilometres from central Washington DC. If you're catching a taxi, ride-sharing or driving from the centre, it'll take you 10 minutes or so to get there, depending on the traffic.

      • Taking public transport? Expect a journey time of around 25 minutes.

      • Searching for a handy hotel close to DCA? If you're catching an early flight from Washington Ronald Reagan Airport to San Diego International Airport, these accommodation options will have you moments from your departure lounge:

      Arriving at San Diego International Airport (SAN)

      When to fly to San Diego International Airport (SAN)

      • It's time to pick your travel dates for your flight from Washington Ronald Reagan Airport to San Diego International Airport. August is the most popular month to head to San Diego. If you want a more laid-back vibe, go in March.

      • The warmest month in San Diego is August, with temperatures ranging between 16ºC (61ºF) and 27ºC (81ºF). Lock in your flights from Washington Ronald Reagan Airport to San Diego International Airport in this month if this is the type of weather you like.

      • If you want cooler conditions, search for a cheap ticket from DCA to SAN in February. Average temperatures are between 8ºC (46ºF) and 22ºC (72ºF) then.

      Explore more of the United States

      • Los Angeles is just one of the many places in the United States waiting to be explored once you've seen the sights of San Diego. Around 177 kilometres away to the north-west, well-known attractions include Hollywood Sign, Universal Studios Hollywood and Hollywood Bowl.

      • Around 483 kilometres east of San Diego, Phoenix is another essential stop in the United States. Get a taste of what this destination has to offer at Camelback Mountain, Yayoi Kusama Fireflies Infinity Mirror Room and Heard Museum.

      Plan smart, explore more

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      Prices shown on this page are estimated lowest prices only. Found in the last 12 days.