BWI - SAN

$123 Find Cheap Flights from Baltimore to San Diego - Compare and Save

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Everything you should know

Cheapest round-trip
$330
Typical prices: $355-$566
Frontier
Tue 12/11Fri 12/14
BWI - SAN • 2 stops
Cheapest non-stop
$332
Typical prices: $360-$582
Southwest
Sat 3/3Sat 3/10
BWI - SAN • Non-stop
Nonstop flights
You can fly direct with Southwest. Average duration is 5h 43m
Direct flights
+1
Direct flights
+1
When to book
in advance
Our data shows that travelers who book at least 7 weeks in advance save around 30% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 20% price drop
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Cheapest • Avg $186 (round-trip)
Shortest trip • 6h 55m (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 Baltimore to San Diego (BWI-SAN)

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

Recent round-trip flight deals from Baltimore to San Diego

Sat, Dec 5 - Tue, Dec 8
Frontier Logo
2:00 pm - 8:02 amBWI  Baltimore/Washington-SAN San Diego
21h 02m2 stops Atlanta Hartsfield-Jackson Las Vegas Harry Reid Intl
Frontier Logo
8:57 am - 12:10 pmSAN  San Diego-BWI Baltimore/Washington
24h 13m2 stops Las Vegas Harry Reid Intl Dallas/Fort Worth
$330Frontier
Fri, Dec 11 - Mon, Dec 14
Frontier Logo
6:41 pm - 10:19 amBWI  Baltimore/Washington-SAN San Diego
18h 38m2 stops Atlanta Hartsfield-Jackson Denver Intl
Frontier Logo
6:30 am - 12:10 pmSAN  San Diego-BWI Baltimore/Washington
26h 40m2 stops Denver Intl Dallas/Fort Worth
$330Frontier
Tue, Feb 16 - Sat, Feb 20
Southwest Logo
6:10 pm - 9:05 pmBWI  Baltimore/Washington-SAN San Diego
5h 55mnonstop
Southwest Logo
6:45 am - 5:50 pmSAN  San Diego-BWI Baltimore/Washington
8h 05m2 stops Dallas Love Field Raleigh-Durham
$332Southwest
Wed, Mar 3 - Wed, Mar 10
Southwest Logo
6:10 pm - 9:05 pmBWI  Baltimore/Washington-SAN San Diego
5h 55mnonstop
Southwest Logo
7:20 pm - 5:50 amSAN  San Diego-BWI Baltimore/Washington
7h 30m1 stop Las Vegas Harry Reid Intl
$332Southwest
Thu, Jan 28 - Tue, Feb 2
United Airlines Logo
4:10 pm - 10:31 pmBWI  Baltimore/Washington-SAN San Diego
9h 21m1 stop Denver Intl
United Airlines Logo
8:40 am - 9:32 pmSAN  San Diego-BWI Baltimore/Washington
9h 52m2 stops Denver Intl Chicago O'Hare Intl
$332United Airlines
Fri, Jan 29 - Fri, Feb 5
United Airlines Logo
4:10 pm - 12:19 amBWI  Baltimore/Washington-SAN San Diego
11h 09m2 stops Denver Intl San Francisco
United Airlines Logo
6:20 am - 4:40 pmSAN  San Diego-BWI Baltimore/Washington
7h 20m1 stop Los Angeles
$332United Airlines
Tue, Dec 8 - Tue, Dec 15
Multiple Airlines Logo
7:00 am - 3:10 pmBWI  Baltimore/Washington-SAN San Diego
11h 10m1 stop Seattle/Tacoma Intl
Multiple Airlines Logo
8:57 am - 10:41 pmSAN  San Diego-BWI Baltimore/Washington
10h 44m2 stops Las Vegas Harry Reid Intl Atlanta Hartsfield-Jackson
$334Multiple Airlines
Wed, Mar 3 - Wed, Mar 10
Delta Logo
1:16 pm - 8:41 pmBWI  Baltimore/Washington-SAN San Diego
10h 25m1 stop Atlanta Hartsfield-Jackson
Delta Logo
10:30 pm - 10:00 amSAN  San Diego-BWI Baltimore/Washington
8h 30m1 stop Detroit Metropolitan Wayne County
$337Delta
Tue, Dec 8 - Sat, Dec 12
Delta Logo
7:00 am - 1:02 pmBWI  Baltimore/Washington-SAN San Diego
9h 02m1 stop Minneapolis St Paul
Delta Logo
10:30 pm - 10:55 amSAN  San Diego-BWI Baltimore/Washington
9h 25m1 stop Atlanta Hartsfield-Jackson
$347Delta
Fri, Dec 4 - Thu, Dec 17
Multiple Airlines Logo
6:03 pm - 10:00 amBWI  Baltimore/Washington-SAN San Diego
18h 57m1 stop Seattle/Tacoma Intl
Multiple Airlines Logo
7:53 pm - 3:17 pmSAN  San Diego-BWI Baltimore/Washington
16h 24m2 stops Las Vegas Harry Reid Intl Houston George Bush Intcntl
$382Multiple Airlines
Booking Insights

Price, demand and travel trends for Baltimore 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 Baltimore to San Diego?

Round-trip flights from Baltimore to San Diego typically range from $355 to $566. The lowest price found in the past 5 days was $330, on Frontier.

What's the cheapest day of the week to fly from Baltimore to San Diego?

Based on deals KAYAK users found in the last 12 months, Wednesday is the cheapest day of the week to fly from Baltimore to San Diego. It’s 8% cheaper than the average day, while Sunday is the most expensive, with prices 19% higher.

What’s the cheapest month to fly from Baltimore to San Diego?

•February is the cheapest month to fly from Baltimore to San Diego at $357 round-trip.
•June ($531) and November ($520) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 48% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from Baltimore to San Diego the cheapest?

Flights from Baltimore to San Diego are cheapest 7 weeks before departure. Booking in this window typically costs about 30% 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 Baltimore to San Diego

 
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.

Harriet Baskas

Harriet Baskas

Expert on BWI

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.

Key details for Baltimore to San Diego flights

Low season

September

Cheapest flight

$123
Beat the crowds with an average 17% drop in travelers.
The most popular month to fly with an average 29% increase in travelers.
One-way flight from Baltimore to San Diego

When to book flights from Baltimore to San Diego

Are your dates flexible? Find out the best times to travel from Baltimore 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

Your Baltimore 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 Baltimore to San Diego?

    These are the earliest and latest flight times available from Baltimore to San Diego:

    • Earliest: departs at 6:15 am and lands at 11:58 am
    • Latest: departs at 8:50 pm and lands at 2:33 am.

    The flight takes about 5h 43m.

  • What cabin classes can I book on flights from Baltimore to San Diego?

    Two cabin classes are available on flights from Baltimore to San Diego:

    • Economy Class
    • First Class

  • How long is a flight from Baltimore to San Diego?

    A nonstop flight from Baltimore to San Diego takes 5h 43m, covering 2,289 miles.

  • Do I need a passport to fly from Baltimore 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 Baltimore to San Diego flight?

    Round-trip flights from Baltimore to San Diego range from $355 to $566, with an average of $444 over the past 12 months. Anything below $355 counts as a good deal.

  • How expensive are last-minute Baltimore to San Diego flights?

    Last-minute fares on this route (booked within two weeks of departure) run 23% above the $444 route average. Book 7 weeks before departure for the lowest fares.

  • How much can I save by taking a layover when flying from Baltimore to San Diego?

    On this route, layover flights are cheaper than nonstop options on average. Layover fares average $186 round-trip via Portland (PDX), compared to $457 for nonstop.

  • What is the standard checked-bag allowance on flights from Baltimore to San Diego?

    There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $45–$90 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

  • Which aircraft model is used most often on flights from Baltimore to San Diego?

    The Boeing 737 MAX 8 family is used most often on this route, operated mainly by Southwest. Other aircraft seen on the route include Boeing 737-800 Passenger/BBJ2 (winglets) variants.

  • How are flight departures from Baltimore to San Diego spread across the day?

    Morning is the busiest departure period on Baltimore to San Diego flights, with 67% of flights leaving in that window. Evening departures account for 33%, afternoon flights for 0%, and night flights for 0%.

  • Have flight prices from Baltimore 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 $330 to $2,614. That means the highest observed fare was about 8x higher than the lowest one.

  • Which airlines offer Wi-Fi on Baltimore to San Diego flights?

    JetBlue is the only airline on the Baltimore to San Diego route offering in-flight Wi-Fi. Pricing depends on fare class.

  • How are flight prices from Baltimore to San Diego looking right now?

    One-way fares from Baltimore to San Diego are currently lower than usual. Average one-way flight prices are about $155, which is 35% 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
    • Europcar
    • Payless
    • Hertz
    • Thrifty

  • Which airports can I use when flying from Baltimore to San Diego?

    Flights from Baltimore to San Diego usually depart from Baltimore/Washington (BWI) and arrive at San Diego (SAN).

  • Which airports do connecting flights from Baltimore to San Diego pass through?

    One-stop flights from Baltimore to San Diego most commonly connect through:

    • Charlotte Douglas (CLT) - 27% of one-stop connections
    • Denver Intl (DEN) - 15% of one-stop connections
    • Los Angeles (LAX) - 15% of one-stop connections
    • Chicago O'Hare Intl (ORD) - 11% of one-stop connections

  • Can I save money by using flexible dates for flights from Baltimore to San Diego?

    Yes. Flexible dates can save you up to 23% on flights from Baltimore to San Diego. Wednesday is the cheapest departure day at $409 round-trip on average, while Sunday is the most expensive at $530, a difference of $121.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What airlines fly from Baltimore to San Diego?

    Only Southwest operates flights between Baltimore and San Diego.

  • How much time can I save by choosing a different layover airport from Baltimore to San Diego?

    Flying via Kansas City (MCI) gives the shortest average 1-stop total travel time at 6h 55m, compared with 7h 12m via Phoenix Sky Harbor Intl (PHX) and 7h 37m via Charlotte Douglas (CLT).

  • What is the time difference between Baltimore and San Diego?

    San Diego is 3 hours behind Baltimore (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 Baltimore to San Diego flights?

    Among airlines operating Baltimore to San Diego flights:

    • Southwest: 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 Baltimore to San Diego flights?

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

    • Southwest: a cabin bag and a checked bag in Economy Class
    • JetBlue: a cabin bag in Economy Class class

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

  • Are there lounges at Baltimore/ Washington International Airport?

    Baltimore/ Washington International Airport has The Club BWI lounge, which features amenities that enrich passengers’ experience. You’ll explore the comfortable seats, power outlets, free internet, and complimentary beverage and food options when you visit the lounge. This lounge is situated at Concourse D close to Gate 10.

  • Does San Diego International Airport have nursing stations for mothers?

    San Diego International Airport minds mothers as it has three lactation rooms. If you are a mother traveling with an infant, you can get to feed and change your baby’s clothes in any of the lactation rooms found post-security. Two are located on Terminal 1 West Rotunda and East Rotunda, respectively, and one on Terminal 2 at the second level close to Gates 34 to 35. The nursing stations also have a hand washing station, soft lighting, artwork, and electrical outlets.

  • Is there an art center at Baltimore/ Washington International Airport?

    Baltimore/ Washington International Airport has art exhibits that are a site to marvel at for passengers who are art lovers. The art galleries are located in various sections of the airport. For example, the D Concourse Art gallery is close to Gates D1 to D5, and the International Art Gallery can be found close to the Security Checkpoint D/E. You may also access the Arts Council of Anne Arundel County Exhibit near Door 10 at the Departures Level.

  • Where can I sleep or rest while waiting for my Baltimore/ Washington International Airport flight?

    If your flight is delayed at BWI, visit Concourse D and E to enjoy a comfortable rest or sleep on the cozy padded benches and narrow couches. In addition, concourse C has armrest-free seats that are ideal for resting.

Your guide to booking Baltimore 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 Wednesday departure and avoid flying on Sunday. On this route, Wednesday flights average $409, about $121 less than Sunday fares (23% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 7 weeks before you fly. On this route, that window historically saves about 30% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Baltimore to San Diego trip for February. Fares historically average $357 round-trip in that month - typically $174 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 Portland Airport (PDX) can be cheaper than flying direct. The cheapest layover option averages $186 round-trip on this route - about $271 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
    • Wyndham San Diego Bayside
  • Suppose you are scheduled to arrive late at the San Diego International Airport (SAN); there are several excellent hotels to stay the night in that are close to the airport. Consider staying at Hilton San Diego Airport/ Harbor Island, about 1 mile away, or Holiday Inn Express San Diego Airport- Old Town, an IHG hotel about 0.8 miles away.
  • Those with flights from Baltimore/ Washington International Airport (BWI) to San Diego International Airport can consider getting to the airport early to beat the city’s morning rush hour. Rush hour starts from about 6 am to 10 am. Put this in mind as you plan to arrive at least 2h before departure to avoid the morning hassle of commuting.
  • Baltimore/ Washington International Airport has a children’s play area, which is essential for families traveling with children. The children’s play area is located in the D/E Connector, and children can enjoy comfortable seats, toys, and great views of airplanes.
  • If you are arriving at the San Diego International Airport, there are plenty of restaurants from which you may enjoy a meal. A wide array of dining options can be found in Terminal 1, Terminal 2 West, and Terminal 2 East. The restaurants range from coffee shops to international restaurants such as Saffron Thai.
  • Those driving into Baltimore/ Washington International Airport for their flights can park their vehicles at the airport’s parking. For long-term parking, you can park at the parking located between Andover Road and S. Camp Meade Road.

Prefer to fly direct from Baltimore to San Diego?

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

Direct departures

Baltimore/Washington to San Diego

Monday

Southwest

Southwest

Tuesday

Southwest

Southwest

Wednesday

Southwest

Southwest

Thursday

Southwest

Southwest

Friday

Southwest

Southwest

Saturday

Southwest

Southwest

Sunday

Southwest

Southwest

See more direct flights

Direct returns

San Diego to Baltimore/Washington

Monday

Southwest

Southwest

Tuesday

Southwest

Southwest

Wednesday

Southwest

Southwest

Thursday

Southwest

Southwest

Friday

Southwest

Southwest

Saturday

Southwest

Southwest

Sunday

Southwest

Southwest

See more direct flights

More options for your flight from Baltimore to San Diego

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