WAS - SAN

$177 Find Cheap Flights from Washington, D.C. to San Diego - Compare and Save

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Everything you should know

Cheapest round-trip
$335
Typical prices: $344-$579
Frontier
Sat 12/22Tue 12/25
IAD - SAN • 2 stops
Cheapest non-stop
$337
Typical prices: $357-$585
Alaska Airlines
Mon 1/8Tue 1/16
IAD - SAN • Non-stop
Advice from real travelers
Alaska Premium Class adds extra legroom; United Economy Plus offers up to 6 inches more.
For more rebooking options, choose IAD over DCA on Washington, D.C. to San Diego flights.
Expert advice
+1
Expert advice
+1
Nonstop flights
You can fly direct with United Airlines and Alaska Airlines. Average duration is 5h 49m
Direct flights
+1
Direct flights
+1
Top routes
Cheapest • 6% average savings
Most popular
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 11 weeks in advance save around 44% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 27% price drop
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Cheapest • Avg $216 (round-trip)
Shortest trip • 7h (one-way)
Insights
Insights
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We hope you love your trip to San Diego!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from Washington, D.C. to San Diego (WAS-SAN)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Washington, D.C. to San Diego

Tue, Dec 22 - Fri, Dec 25
Frontier Logo
8:51 pm - 1:50 pmIAD  Washington, D.C. Dulles Intl-SAN San Diego
19h 59m2 stops Las Vegas Harry Reid Intl Phoenix Sky Harbor Intl
Frontier Logo
6:36 am - 6:07 amSAN  San Diego-IAD Washington, D.C. Dulles Intl
20h 31m2 stops Denver Intl Las Vegas Harry Reid Intl
$335Frontier
Sat, Dec 5 - Wed, Dec 9
Frontier Logo
10:35 pm - 10:19 amIAD  Washington, D.C. Dulles Intl-SAN San Diego
14h 44m2 stops Atlanta Hartsfield-Jackson Denver Intl
Frontier Logo
7:51 pm - 2:49 pmSAN  San Diego-IAD Washington, D.C. Dulles Intl
15h 58m2 stops San Francisco Atlanta Hartsfield-Jackson
$336Frontier
Fri, Jan 8 - Sat, Jan 16
Alaska Airlines Logo
6:53 pm - 9:47 pmIAD  Washington, D.C. Dulles Intl-SAN San Diego
5h 54mnonstop
Alaska Airlines Logo
9:56 am - 5:50 pmSAN  San Diego-IAD Washington, D.C. Dulles Intl
4h 54mnonstop
$337Alaska Airlines
Thu, Feb 4 - Tue, Feb 9
Alaska Airlines Logo
6:53 pm - 9:47 pmIAD  Washington, D.C. Dulles Intl-SAN San Diego
5h 54mnonstop
Alaska Airlines Logo
9:56 am - 5:50 pmSAN  San Diego-IAD Washington, D.C. Dulles Intl
4h 54mnonstop
$337Alaska Airlines
Fri, Jan 22 - Wed, Jan 27
United Airlines Logo
5:40 pm - 8:34 pmIAD  Washington, D.C. Dulles Intl-SAN San Diego
5h 54mnonstop
United Airlines Logo
12:40 pm - 8:35 pmSAN  San Diego-IAD Washington, D.C. Dulles Intl
4h 55mnonstop
$337United Airlines
Fri, Feb 5 - Tue, Feb 9
United Airlines Logo
5:40 pm - 8:34 pmIAD  Washington, D.C. Dulles Intl-SAN San Diego
5h 54mnonstop
United Airlines Logo
9:45 pm - 5:32 amSAN  San Diego-IAD Washington, D.C. Dulles Intl
4h 47mnonstop
$337United Airlines
Sat, Jan 23 - Tue, Jan 26
American Airlines Logo
4:13 pm - 8:54 pmIAD  Washington, D.C. Dulles Intl-SAN San Diego
7h 41m1 stop Charlotte Douglas
American Airlines Logo
1:09 pm - 10:55 pmSAN  San Diego-IAD Washington, D.C. Dulles Intl
6h 46m1 stop Dallas/Fort Worth
$337American Airlines
Wed, Feb 3 - Mon, Feb 8
American Airlines Logo
4:13 pm - 8:54 pmIAD  Washington, D.C. Dulles Intl-SAN San Diego
7h 41m1 stop Charlotte Douglas
American Airlines Logo
11:28 am - 9:10 pmSAN  San Diego-IAD Washington, D.C. Dulles Intl
6h 42m1 stop Charlotte Douglas
$337American Airlines
Fri, Feb 26 - Mon, Mar 1
Delta Logo
6:00 am - 1:08 pmIAD  Washington, D.C. Dulles Intl-SAN San Diego
10h 08m1 stop Atlanta Hartsfield-Jackson
Delta Logo
10:40 pm - 10:01 amSAN  San Diego-IAD Washington, D.C. Dulles Intl
8h 21m1 stop Atlanta Hartsfield-Jackson
$337Delta
Fri, Feb 26 - Mon, Mar 1
Delta Logo
7:30 am - 1:00 pmIAD  Washington, D.C. Dulles Intl-SAN San Diego
8h 30m1 stop Minneapolis St Paul
Delta Logo
10:40 pm - 10:01 amSAN  San Diego-IAD Washington, D.C. Dulles Intl
8h 21m1 stop Atlanta Hartsfield-Jackson
$337Delta
Booking Insights

Price, demand and travel trends for Washington, D.C. to San Diego flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

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

Round-trip flights from Washington, D.C. to San Diego typically range from $344 to $579. The lowest price found in the past 5 days was $335, on Frontier.

What is the cheapest Washington, D.C. to San Diego flight route?

Washington, D.C. Reagan-National Airport (DCA) to San Diego (SAN) is the cheapest Washington, D.C. to San Diego route, averaging $407 round-trip. Other Washington, D.C. to San Diego routes average $455, based on KAYAK data over the past 12 months.

What's the cheapest day of the week to fly from Washington, D.C. to San Diego?

Based on deals KAYAK users found in the last 12 months, Saturday is the cheapest day of the week to fly from Washington, D.C. to San Diego. It’s 11% cheaper than the average day, while Sunday is the most expensive, with prices 21% higher.

What’s the cheapest month to fly from Washington, D.C. to San Diego?

•January is the cheapest month to fly from Washington, D.C. to San Diego at $322 round-trip.
•June ($512) and October ($476) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 59% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from Washington, D.C. to San Diego the cheapest?

Flights from Washington, D.C. to San Diego are cheapest 11 weeks before departure. Booking in this window typically costs about 44% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Expert advice

Expert advice for your flight from Washington, D.C. to San Diego

 
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on Alaska Airlines

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Stefanie Waldek

Stefanie Waldek

Expert on United Airlines and IAD

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

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.

Key details for Washington, D.C. to San Diego flights

Low season

October

Cheapest flight

$177
Beat the crowds with an average 20% drop in travelers.
The most popular month to fly with an average 16% increase in travelers.
One-way flight from Washington, D.C. Dulles Intl Airport to San Diego

When to book flights from Washington, D.C. to San Diego

Are your dates flexible? Find out the best times to travel from Washington, D.C. to San Diego based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Flights from Washington, D.C. to San Diego: the best tips from KAYAK users' own experiences

Insights shared by verified travelers who flew the route from Washington, D.C. to San Diego 
Verified travelerFlew with Alaska Airlines-Feb 2026
DCA only has a few flights to other coast. IAD has many. If something goes wrong you’ll have more options flying out of IAD.
RebeccaFlew with Alaska Airlines-Sep 2024
Get something to eat in the airport, just in case there is no food onboard.

Your Washington, D.C. to San Diego flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What are the earliest and latest flights from Washington, D.C. to San Diego?

    These are the earliest and latest flight times available from Washington, D.C. to San Diego:

    • Earliest: departs at 8:25 am and lands at 2:14 pm
    • Latest: departs at 7:24 pm and lands at 1:13 am.

    The flight takes about 5h 49m.

  • What cabin classes can I book on flights from Washington, D.C. to San Diego?

    Four cabin classes are available on flights from Washington, D.C. to San Diego:

    • Economy Class
    • Premium Economy Class
    • Business Class
    • First Class

    Prices vary by airline.

  • How long is a flight from Washington, D.C. to San Diego?

    A nonstop flight from Washington, D.C. to San Diego takes 5h 49m, covering 2,270 miles.

  • Do I need a passport to fly from Washington, D.C. to San Diego?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

  • How much should I expect to pay for a Washington, D.C. to San Diego flight?

    Round-trip flights from Washington, D.C. to San Diego range from $344 to $579, with an average of $442 over the past 12 months. Anything below $344 counts as a good deal.

  • How expensive are last-minute Washington, D.C. to San Diego flights?

    Last-minute fares on this route (booked within two weeks of departure) run 53% above the $442 route average. Book 11 weeks before departure for the lowest fares.

  • How much can I save by taking a layover when flying from Washington, D.C. to San Diego?

    On this route, layover flights are cheaper than nonstop options on average. Layover fares average $216 round-trip via Seattle/Tacoma Intl (SEA), compared to $451 for nonstop.

  • What is the standard checked-bag allowance on flights from Washington, D.C. to San Diego?

    There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $40–$100 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

  • How are flight departures from Washington, D.C. to San Diego spread across the day?

    Morning is the busiest departure period on Washington, D.C. to San Diego flights, with 40% of flights leaving in that window. Evening departures account for 40%, afternoon flights for 20%, and night flights for 0%.

  • Have flight prices from Washington, D.C. to San Diego changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $335 to $2,991. That means the highest observed fare was about 9x higher than the lowest one.

  • Which airlines offer Wi-Fi on Washington, D.C. to San Diego flights?

    Two airlines offer in-flight Wi-Fi on Washington, D.C. to San Diego flights:

    • Alaska Airlines
    • JetBlue

    Pricing varies by airline and fare class. Some plans are included with the ticket or loyalty program; others are paid add-ons priced by flight length.

  • How are flight prices from Washington, D.C. to San Diego looking right now?

    One-way fares from Washington, D.C. to San Diego are currently lower than usual. Average one-way flight prices are about $180, which is 34% below the typical average for this route.

  • What car rental options are available at San Diego Airport (SAN)?

    San Diego Airport (SAN) hosts 5 major car rental companies, with daily rates averaging $53 for economy cars. Top options include:

    • Dollar
    • Payless
    • Europcar
    • Thrifty
    • Fox

  • Which airports can I use when flying from Washington, D.C. to San Diego?

    Flights from Washington, D.C. to San Diego may depart from several airports in Washington, D.C. area, including Washington, D.C. Reagan-National (DCA) and Washington, D.C. Dulles Intl (IAD). Flights usually arrive at San Diego (SAN).

  • Which airports do connecting flights from Washington, D.C. to San Diego pass through?

    One-stop flights from Washington, D.C. to San Diego most commonly connect through:

    • Denver Intl (DEN) - 60% of one-stop connections
    • Charlotte Douglas (CLT) - 5% of one-stop connections
    • Chicago O'Hare Intl (ORD) - 5% of one-stop connections
    • Detroit Metropolitan Wayne County (DTW) - 4% of one-stop connections

  • Can I save money by using flexible dates for flights from Washington, D.C. to San Diego?

    Yes. Flexible dates can save you up to 27% on flights from Washington, D.C. to San Diego. Saturday is the cheapest departure day at $395 round-trip on average, while Sunday is the most expensive at $538, a difference of $143.

    Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

  • What airlines fly from Washington, D.C. to San Diego?

    2 airlines operate flights between Washington, D.C. and San Diego. The airlines offering nonstop flights on this route include:

    • United Airlines
    • Alaska Airlines

  • How much time can I save by choosing a different layover airport from Washington, D.C. to San Diego?

    Flying via Dallas Love Field (DAL) gives the shortest average 1-stop total travel time at 7h, compared with 7h 05m via Nashville Intl (BNA) and 7h 19m via Minneapolis St Paul (MSP).

  • What is the time difference between Washington, D.C. and San Diego?

    San Diego is 3 hours behind Washington, D.C. (Pacific Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in San Diego?

    Some of the most popular sights in San Diego are Gaslamp Quarter, San Diego Convention Center and SeaWorld San Diego. These are among the most viewed places in San Diego on KAYAK.

  • Which airlines offer extra legroom and free seat selection on Washington, D.C. to San Diego flights?

    Among airlines operating Washington, D.C. to San Diego flights:

    • United Airlines: offers extra legroom; offers free seat selection
    • Alaska Airlines: offers extra legroom; offers free seat selection
    • American Airlines: offers free seat selection

    Extra legroom and free seat selection availability depends on fare class and route.

  • Which airlines include bags at no extra cost on Washington, D.C. to San Diego flights?

    Here are some options for this route, based on selected ticket types and cabin classes:

    • United Airlines: a cabin bag and a checked bag in Economy Class
    • Alaska Airlines: a cabin bag and a checked bag in Economy Class
    • American Airlines: a cabin bag and a checked bag in First Class

    Bag allowance can vary by ticket type, cabin class, route and airline, so always check the fare details before booking.

  • How can I get from SAN into San Diego City center?

    MTS Route 992 buses run approximately every 15 minutes. Shuttles and taxis are also available from Terminal 1 to downtown San Diego and a taxi trip takes about 10 minutes.

  • Which of the Washington airports provide animal relief areas?

    All three WAS airports have animal relief areas for service animals and pets. IAD has four pet relief areas, with two outside the terminal and two inside the concourses. Baltimore/Washington International Thurgood Marshall Airport (BWI) has two animal relief areas landside and two airside. DCA has four pet relief stations landside and four airside.

  • Which of the WAS airports have a USO?

    All three airports have a USO lounge. The lounges at IAD, BWI and DCA welcome active-duty US military, US military retirees, National Guard members, Reservists and their family members.

  • Does SAN provide areas for nursing mothers?

    Yes. San Diego International Airport (SAN) has six post-security lactation and nursing locations. Five are in Terminal 1: on Level 1 by baggage claim unit 3 and near baggage claim unit 8 and on Level 2 across from Gate 118, across from the Dining Hall near Gate 114 and near Gate 108. One is in Terminal 2 West on Level 2 near Gates 34–35. The lactation rooms have soft lighting, comfortable seating, a seat for children, electrical outlets, a hand-washing station and soothing artwork on the walls.

Your guide to booking Washington, D.C. to San Diego flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Saturday departure and avoid flying on Sunday. On this route, Saturday flights average $395, about $143 less than Sunday fares (27% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 11 weeks before you fly. On this route, that window historically saves about 44% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Washington, D.C. to San Diego trip for January. Fares historically average $322 round-trip in that month - typically $190 less than the most expensive month, which is June (based on the last 12 months).
  • If you have the time, taking a 1-stop flight through Seattle/Tacoma Intl Airport (SEA) can be cheaper than flying direct. The cheapest layover option averages $216 round-trip on this route - about $235 less than direct flights (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to San Diego Airport.

    • Courtyard by Marriott San Diego Downtown Little Italy
    • Bay Club Hotel & Marina
    • Sheraton San Diego Resort
  • If you need help at SAN, look for Traveler’s Aid near the baggage claim areas in Terminals 1 and 2. Keep in mind that the airport’s official Services and Facilities page does not list Traveler’s Aid or confirm assistance categories such as emergency housing, transportation assistance or lost or stolen money.
  • If you plan to visit a chapel before your flight, both IAD and DCA have an interfaith chapel. At IAD, the chapel welcomes all and has a trauma team ready to act in cases of devastating loss.

Prefer to fly direct from Washington, D.C. to San Diego?

 
Find which airlines fly direct from Washington, D.C. to San Diego Airport, which days they fly and book direct flights.

Direct departures

Washington, D.C. to San Diego

Monday

Alaska Airlines,United Airlines

Alaska Airlines,United Airlines

Tuesday

Alaska Airlines,United Airlines

Alaska Airlines,United Airlines

Wednesday

Alaska Airlines,United Airlines

Alaska Airlines,United Airlines

Thursday

Alaska Airlines,United Airlines

Alaska Airlines,United Airlines

Friday

Alaska Airlines,United Airlines

Alaska Airlines,United Airlines

Saturday

Alaska Airlines,United Airlines

Alaska Airlines,United Airlines

Sunday

Alaska Airlines,United Airlines

Alaska Airlines,United Airlines

See more direct flights

Direct returns

San Diego to Washington, D.C.

Monday

Alaska Airlines,United Airlines

Alaska Airlines,United Airlines

Tuesday

Alaska Airlines,United Airlines

Alaska Airlines,United Airlines

Wednesday

Alaska Airlines,United Airlines

Alaska Airlines,United Airlines

Thursday

Alaska Airlines,United Airlines

Alaska Airlines,United Airlines

Friday

Alaska Airlines,United Airlines

Alaska Airlines,United Airlines

Saturday

Alaska Airlines,United Airlines

Alaska Airlines,United Airlines

Sunday

Alaska Airlines,United Airlines

Alaska Airlines,United Airlines

See more direct flights

More options for your flight from Washington, D.C. to San Diego

Complete your trip to San Diego with a hotel stay or car rental