San Diego

$69+ Cheap flights from Baltimore to San Diego (BWI - SAN)

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 1/18. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — SAN
Dec 31 — Jan 71
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Find cheap flights from Baltimore to San Diego 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

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Cheapflights Tip: The best prices from Baltimore/Washington to San Diego are usually found in July or May, booked 79 days in advance, depart on a Tuesday or Thursday and return on a Wednesday

Cheap flight deals from Baltimore to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from Baltimore (BWI) to San Diego (SAN). 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 December 1, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$159
(Southwest)

One-way from

$69
(Trip.com)

Popular in

June

Cheapest in

July

Average price

$438
Provider with most accurate pricing for Baltimore/Washington-San Diego flight deals.
Provider most trusted by Cheapflights users for Baltimore/Washington-San Diego flights.
From Baltimore/Washington to San Diego
One-way flight from Baltimore/Washington to San Diego
High demand for flights, 1% potential price rise
Cheapest flight prices on average. 1% potential price decrease ($9 potential savings vs. average RT price).
Average for round-trip flights in December 2025

Find flight deals from Baltimore to San Diego

Cheapest flights from Baltimore to San Diego
Explore the most affordable flight options available from Baltimore to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 1, 2025.

This Southwest deal was found by Cheapflights users on 11/30. 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.
Wed 12/319:25 amBWI - SAN
1 stop8h 55mSouthwest
Tue 1/69:45 pmSAN - BWI
Nonstop4h 45mSouthwest
Deal found 11/30$256
This Kiwi.com deal was found by Cheapflights users on 11/29. 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.
Mon 12/1510:27 amBWI - SAN
1 stop16h 29mMultiple Airlines
Thu 12/181:06 pmSAN - BWI
2 stops18h 40mMultiple Airlines
Deal found 11/29$281
This Kiwi.com deal was found by Cheapflights users on 11/30. 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.
Mon 12/810:27 amBWI - SAN
1 stop16h 29mMultiple Airlines
Sat 12/136:25 amSAN - BWI
2 stops23h 52mMultiple Airlines
Deal found 11/30$283
This Kiwi.com deal was found by Cheapflights users on 11/30. 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.
Wed 12/319:34 amBWI - SAN
1 stop15h 31mMultiple Airlines
Fri 1/96:36 amSAN - BWI
2 stops11h 28mMultiple Airlines
Deal found 11/30$287
This Kiwi.com deal was found by Cheapflights users on 11/30. 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.
Mon 12/1510:27 amBWI - SAN
1 stop16h 29mMultiple Airlines
Thu 12/254:47 pmSAN - BWI
2 stops14h 59mMultiple Airlines
Deal found 11/30$301
This Southwest deal was found by Cheapflights users on 12/1. 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 12/306:20 amBWI - SAN
Nonstop5h 45mSouthwest
Tue 1/69:45 pmSAN - BWI
Nonstop4h 45mSouthwest
Deal found 12/1$306
This Kiwi.com deal was found by Cheapflights users on 11/28. 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 12/129:20 amBWI - SAN
2 stops17h 39mFrontier
Mon 12/156:25 amSAN - BWI
1 stop10h 18mFrontier
Deal found 11/28$309
This Kiwi.com deal was found by Cheapflights users on 11/30. 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.
Wed 12/319:34 amBWI - SAN
1 stop15h 31mMultiple Airlines
Mon 2/29:46 amSAN - BWI
2 stops28h 24mMultiple Airlines
Deal found 11/30$310

Cheapflights Fare Finder

 
Customize your flight search to find flights from Baltimore to San Diego 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 December 1, 2025.
Use the filters below to find and compare flights from Baltimore to San Diego that are best for you.

Fly from

Baltimore

Fly to

San Diego

Route

Depart

Return

Price

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

Wed 2/4

5:50 pm-10:20 pm

1 stop7h 30m

San Diego

Sat 2/7

9:45 pm-5:30 am

Nonstop4h 45m

$277

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

Thu 1/1

7:00 am-12:40 pm

1 stop8h 40m

San Diego

Mon 2/2

7:55 pm-5:45 am

1 stop6h 50m

$277

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

Sat 1/10

6:15 am-11:10 am

1 stop7h 55m

San Diego

Sat 1/17

9:45 pm-5:30 am

Nonstop4h 45m

$277

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

Thu 1/15

6:20 am-1:10 pm

2 stops9h 50m

San Diego

Mon 1/19

10:35 am-8:20 pm

1 stop6h 45m

$291

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

Wed 1/28

7:14 pm-10:07 am

1 stop17h 53m

San Diego

Mon 2/2

6:15 am-6:14 pm

1 stop8h 59m

$296

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

Thu 1/1

6:00 am-10:42 am

1 stop7h 42m

San Diego

Sat 1/10

10:00 pm-10:27 am

1 stop9h 27m

$297

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

Wed 1/7

2:30 pm-7:40 pm

1 stop8h 10m

San Diego

Sun 1/11

2:45 pm-10:30 pm

Nonstop4h 45m

$297

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

Wed 1/14

6:20 am-9:25 am

Nonstop6h 05m

San Diego

Mon 1/19

9:45 pm-5:30 am

Nonstop4h 45m

$297

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

Mon 1/26

6:05 am-2:29 pm

2 stops11h 24m

San Diego

Sun 2/1

6:55 pm-10:27 am

2 stops12h 32m

$317

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

Thu 2/12

6:20 am-9:25 am

Nonstop6h 05m

San Diego

Sun 2/15

6:50 am-2:40 pm

Nonstop4h 50m

$317

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/1

Showing 1-10 of 21 results
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2
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Compare providers for flights from Baltimore to San Diego

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 Baltimore to San Diego in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
Trip.comPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Baltimore-San Diego flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Baltimore-San Diego flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Baltimore-San Diego flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Baltimore-San Diego flights, Cheapflights users trust eDreams the most. eDreams 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 Baltimore-San Diego 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 Baltimore to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from Baltimore 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 Baltimore to San Diego

How far ahead should I book a flight from Baltimore to San Diego?

Use this chart to determine the optimal time to book a round-trip flight from Baltimore to San Diego. Price data was last updated on November 28, 2025.

Booking 79 days in advance of your planned departure date is, on average, the best time to get cheap flights from Baltimore to San Diego. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Baltimore to San Diego?

Currently, November is the cheapest month in which you can book a flight from Baltimore to San Diego (average of $105). Flying from Baltimore to San Diego in July is currently the most expensive (average of $188). 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 BWI to SAN?

Find hourly flight availability from Baltimore to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 1, 2025.

It’s typically best to fly out from Baltimore to San Diego in the evening. Doing so could potentially save you 35% on the flight price compared to flying at noon, which is usually more expensive.

What is the cheapest day to fly from Baltimore to San Diego?

Use this chart to determine the cheapest time to fly round-trip from Baltimore to San Diego. Price data was last updated on November 29, 2025.

Travelers seeking maximum savings on their Baltimore to San Diego flight should consider departing on Saturday at noon when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

The best insider tips for Baltimore to San Diego flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Baltimore to San Diego trip
Airports
BWI

For early morning flights, arrive 20-30 minutes early to navigate busy security lines efficiently.

SAN

Use the free San Diego Flyer shuttle for convenient transport between SAN and Old Town Transit Center.

Our travel experts
Blane Bachelor

Blane Bachelor

Expert on SAN

Blane Bachelor

Blane Bachelor

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Read more
Emily Zemler

Emily Zemler

Expert on BWI

Emily Zemler

Emily Zemler

Emily is a freelance writer and book author based in London covering entertainment and travel. Her work has appeared in Los Angeles Times, Observer, and Conde Nast Traveler She has ventured to more than 40 countries and all seven continents, always in search of a great art museum. She has written extensively about hotels, luxury travel, and aviation.

Read more

Reviews of airlines servicing San Diego

Get insights into the airlines that provide service to San Diego. 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 San Diego. Reviews last updated December 1, 2025.
See what other customers who have flown with Southwest, Delta, and United Airlines from Baltimore to San Diego have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Entertainment

7.5

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Entertainment

7.5

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Entertainment

7.5

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Entertainment

7.5

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Entertainment

7.5

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Entertainment

7.5

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

Find useful and relevant information for your journey from Baltimore to San Diego. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • How popular is this Baltimore to San Diego flight route?

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

    Departing from Baltimore to San Diego will take you 7h 30m. The distance from Baltimore to San Diego is about 2289 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Baltimore to San Diego round-trip?

    Our cheapest airline available from Baltimore to San Diego is Spirit Airlines. Our recent data shows that you can find tickets from as low as $129 on this airline. Additional options worth looking into are Frontier and Alaska Airlines, starting at $130 and $211 round-trip. You may be able to fly from Baltimore to San Diego for 69% less than the average price by searching for these airlines.

  • What are the cheapest flights from Baltimore to San Diego?

    Looking at all options, your cheapest flight can be booked for $158. While the most popular route (Baltimore/Washington - San Diego) can be booked for $159 on average, our data indicates $365 when flying from Baltimore to San Diego.

  • Can I find deals for flights from Baltimore to San Diego that include hotel bookings?

    Yes. In addition to deals on Baltimore to San Diego flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Baltimore to San Diego?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Baltimore to San Diego.

  • Can I find deals for business class flights from Baltimore to San Diego?

    Yes. Cheapflights offers flight deals from Baltimore to San Diego by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Baltimore to San Diego?

    Currently, November is the cheapest month in which you can book a flight from Baltimore to San Diego (average of $105). Flying from Baltimore to San Diego in July is currently the most expensive (average of $188). 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.

See more FAQs

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
Chula Vista
Coronado
La Mesa
Poway
Lemon Grove
Julian
National City

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Baltimore to San Diego

See prices for flight routes from nearby airports that may be better suited for you.

Top 7 airlines flying from Baltimore to San Diego

Discover the top 7 airlines that operate flights from Baltimore to San Diego. 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 December 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$129Average$290FlexibilityNo cancel feeOn-time65%
FrontierCheapest$130Average$260FlexibilityNo cancel feeOn-time62%
Alaska AirlinesCheapest$211Average$348FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$260Average$470FlexibilityNo cancel feeOn-time71%
DeltaCheapest$260Average$417FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$276Average$437FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$277Average$452FlexibilityNo cancel feeOn-time63%

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